fuse_getattr.cpp

Add NFS options to remote filesystems section of readme

.cirrus.yml

@@ -5,7 +5,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 freebsd_task:
@@ -15,7 +15,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 freebsd_task:
@@ -25,7 +25,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 freebsd_task:
@@ -35,7 +35,7 @@ freebsd_task:
   env:
     ASSUME_ALWAYS_YES: yes
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - gmake -j4
 
 
@@ -43,7 +43,7 @@ freebsd_task:
 #  osx_instance:
 #    image: catalina-base
 #  script:
-#    - tools/install-build-pkgs
+#    - buildtools/install-build-pkgs
 #    - gmake -j4
 
 linux_task:
@@ -54,7 +54,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -65,7 +65,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -76,7 +76,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -87,7 +87,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -98,7 +98,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -109,7 +109,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -120,7 +120,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -131,7 +131,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -142,7 +142,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make STATIC=1 LTO=1
 
 linux_task:
@@ -153,7 +153,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -165,7 +165,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -177,7 +177,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -189,7 +189,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -201,7 +201,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -213,7 +213,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -225,7 +225,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -237,7 +237,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -249,7 +249,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -261,7 +261,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -273,7 +273,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -285,7 +285,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -297,7 +297,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - make
     - make rpm
 
@@ -309,7 +309,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -324,7 +324,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -339,7 +339,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -354,7 +354,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -369,7 +369,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -384,7 +384,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -399,7 +399,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -414,7 +414,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -429,7 +429,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -444,7 +444,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -459,7 +459,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -474,7 +474,22 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
+    - git fetch
+    - make deb
+    - apt-get -y install fuse
+    - dpkg -i ../*.deb
+    - mergerfs -v || true
+
+linux_task:
+  name: "debian:12"
+  container:
+    image: debian:12
+    cpu: 4
+    memory: 4G
+  timeout_in: 15m
+  script:
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -489,7 +504,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse
@@ -504,7 +519,7 @@ linux_task:
     memory: 4G
   timeout_in: 15m
   script:
-    - tools/install-build-pkgs
+    - buildtools/install-build-pkgs
     - git fetch
     - make deb
     - apt-get -y install fuse

DEPENDENCIES

@@ -0,0 +1,11 @@
+## Libraries
+
+### included in repo
+
+* libfuse: https://github.com/libfuse/libfuse (heavily modified fork of v2.x)
+* wyhash: https://github.com/wangyi-fudan/wyhash
+* ghc::filesystem: https://github.com/gulrak/filesystem
+* nonstd::optional: https://github.com/martinmoene/optional-lite
+* fmt: https://github.com/fmtlib/fmt
+* concurrentqueue: https://github.com/cameron314/concurrentqueue
+* scope_guard: https://github.com/Neargye/scope_guard

LICENSE

@@ -1,7 +1,7 @@
 /*
   ISC License
 
-  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+  Copyright (c) 2024, Antonio SJ Musumeci <trapexit@spawn.link>
 
   Permission to use, copy, modify, and/or distribute this software for any
   purpose with or without fee is hereby granted, provided that the above

Makefile

@@ -1,4 +1,4 @@
-#  Copyright (c) 2016, Antonio SJ Musumeci <trapexit@spawn.link>
+#  Copyright (c) 2024, Antonio SJ Musumeci <trapexit@spawn.link>
 #
 #  Permission to use, copy, modify, and/or distribute this software for any
 #  purpose with or without fee is hereby granted, provided that the above
@@ -26,7 +26,7 @@ STRIP     = strip
 PANDOC    = pandoc
 SED       = sed
 RPMBUILD  = rpmbuild
-GIT2DEBCL = ./tools/git2debcl
+GIT2DEBCL = ./buildtools/git2debcl
 PKGCONFIG = pkg-config
 
 GIT_REPO = 0
@@ -42,7 +42,7 @@ UGID_USE_RWLOCK = 0
 ifeq ($(DEBUG),1)
 OPT_FLAGS := -O0 -g -fsanitize=undefined
 else
-OPT_FLAGS := -O2
+OPT_FLAGS := -O2 -DNDEBUG
 endif
 
 ifeq ($(STATIC),1)
@@ -68,12 +68,17 @@ TESTS_DEPS  = $(TESTS:tests/%.cpp=build/.tests/%.d)
 TESTS_DEPS += $(DEPS)
 
 MANPAGE     = mergerfs.1
+CFLAGS      ?= ${OPT_FLAGS}
+CFLAGS      := ${CFLAGS} \
+               -Wall \
+               -Wno-unused-result
 CXXFLAGS    ?= ${OPT_FLAGS}
 CXXFLAGS    := \
               ${CXXFLAGS} \
               -std=c++11 \
               $(STATIC_FLAGS) \
               $(LTO_FLAGS) \
+              -Isrc \
               -Wall \
               -Wno-unused-result \
               -MMD
@@ -92,6 +97,7 @@ LDFLAGS := \
     -pthread \
     -lrt
 
+# https://www.gnu.org/prep/standards/html_node/Directory-Variables.html
 DESTDIR       =
 PREFIX        = /usr/local
 EXEC_PREFIX   = $(PREFIX)
@@ -99,11 +105,13 @@ DATAROOTDIR   = $(PREFIX)/share
 DATADIR       = $(DATAROOTDIR)
 BINDIR        = $(EXEC_PREFIX)/bin
 SBINDIR       = $(EXEC_PREFIX)/sbin
+LIBDIR        = $(EXEC_PREFIX)/lib
 MANDIR        = $(DATAROOTDIR)/man
 MAN1DIR       = $(MANDIR)/man1
 
 INSTALLBINDIR  = $(DESTDIR)$(BINDIR)
 INSTALLSBINDIR = $(DESTDIR)$(SBINDIR)
+INSTALLLIBDIR  = $(DESTDIR)$(LIBDIR)/mergerfs
 INSTALLMAN1DIR = $(DESTDIR)$(MAN1DIR)
 
 .PHONY: all
@@ -141,7 +149,7 @@ endif
 
 .PHONY: version
 version:
-	tools/update-version
+	./buildtools/update-version
 
 build/stamp:
 	$(MKDIR) -p build/.src build/.tests
@@ -153,6 +161,10 @@ build/.src/%.o: src/%.cpp
 build/.tests/%.o: tests/%.cpp
 	$(CXX) $(CXXFLAGS) $(TESTS_FLAGS) $(FUSE_FLAGS) $(MFS_FLAGS) $(CPPFLAGS) -c $< -o $@
 
+build/preload.so: build/stamp tools/preload.c
+	$(CC) -shared -fPIC $(CFLAGS) $(CPPFLAGS) -o $@ tools/preload.c
+
+preload: build/preload.so
 
 .PHONY: clean
 clean: rpm-clean
@@ -166,7 +178,7 @@ ifeq ($(GIT_REPO),1)
 endif
 
 .PHONY: install
-install: install-base install-mount-tools install-man
+install: install-base install-mount-tools install-preload install-man
 
 install-base: build/mergerfs
 	$(MKDIR) -p "$(INSTALLBINDIR)"
@@ -180,6 +192,10 @@ install-man: $(MANPAGE)
 	$(MKDIR) -p "$(INSTALLMAN1DIR)"
 	$(INSTALL) -v -m 0644 "man/$(MANPAGE)" "$(INSTALLMAN1DIR)/$(MANPAGE)"
 
+install-preload: preload
+	$(MKDIR) -p "$(INSTALLLIBDIR)"
+	$(INSTALL) -v -m 444 "build/preload.so" "$(INSTALLLIBDIR)/preload.so"
+
 install-strip: install-base
 	$(STRIP) "$(INSTALLBINDIR)/mergerfs"
 
@@ -225,13 +241,13 @@ endif
 signed-deb:
 	$(MAKE) distclean
 	$(MAKE) debian-changelog
-	dpkg-source -b .
+#	dpkg-source -b .
 	dpkg-buildpackage -nc
 
 deb:
 	$(MAKE) distclean
 	$(MAKE) debian-changelog
-	dpkg-source -b .
+#	dpkg-source -b .
 	dpkg-buildpackage -nc -uc -us
 
 .PHONY: rpm-clean
@@ -250,7 +266,7 @@ rpm: tarball
 
 .PHONY: install-build-pkgs
 install-build-pkgs:
-	tools/install-build-pkgs
+	./buildtools/install-build-pkgs
 
 .PHONY: libfuse
 libfuse:

README.md

@@ -180,6 +180,9 @@ These options are the same regardless of whether you use them with the
   link to always use the non-path preserving behavior. This means
   files, when renamed or linked, will stay on the same
   filesystem. (default: false)
+* **export-support=BOOL**: Sets a low-level FUSE feature intended to
+  indicate the filesystem can support being exported via
+  NFS. (default: true)
 * **security_capability=BOOL**: If false return ENOATTR when xattr
   security.capability is queried. (default: true)
 * **xattr=passthrough|noattr|nosys**: Runtime control of
@@ -241,8 +244,16 @@ These options are the same regardless of whether you use them with the
   `read-thread-count` refers to the number of threads reading FUSE
   messages which are dispatched to process threads. -1 means disabled
   otherwise acts like `read-thread-count`. (default: -1)
+* **process-thread-queue-depth=UINT**: Sets the number of requests any
+  single process thread can have queued up at one time. Meaning the
+  total memory usage of the queues is queue depth multiplied by the
+  number of process threads plus read thread count. 0 sets the depth
+  to the same as the process thread count. (default: 0)
 * **pin-threads=STR**: Selects a strategy to pin threads to CPUs
   (default: unset)
+* **flush-on-close=never|always|opened-for-write**: Flush data cache
+  on file close. Mostly for when writeback is enabled or merging
+  network filesystems. (default: opened-for-write)
 * **scheduling-priority=INT**: Set mergerfs' scheduling
   priority. Valid values range from -20 to 19. See `setpriority` man
   page for more details. (default: -10)
@@ -251,6 +262,9 @@ These options are the same regardless of whether you use them with the
   concatenated together with the longest common prefix removed.
 * **func.FUNC=POLICY**: Sets the specific FUSE function's policy. See
   below for the list of value types. Example: **func.getattr=newest**
+* **func.readdir=seq|cosr|cor|cosr:INT|cor:INT**: Sets `readdir`
+  policy. INT value sets the number of threads to use for
+  concurrency. (default: seq)
 * **category.action=POLICY**: Sets policy of all FUSE functions in the
   action category. (default: epall)
 * **category.create=POLICY**: Sets policy of all FUSE functions in the
@@ -279,6 +293,10 @@ These options are the same regardless of whether you use them with the
   (default: false)
 * **cache.readdir=BOOL**: Cache readdir (if supported by kernel)
   (default: false)
+* **parallel-direct-writes=BOOL**: Allow the kernel to dispatch
+  multiple, parallel (non-extending) write requests for files opened
+  with `cache.files=per-process` (if the process is not in `process-names`)
+  or `cache.files=off`. (This requires kernel support, and was added in v6.2)
 * **direct_io**: deprecated - Bypass page cache. Use `cache.files=off`
   instead. (default: false)
 * **kernel_cache**: deprecated - Do not invalidate data cache on file
@@ -292,8 +310,8 @@ These options are the same regardless of whether you use them with the
 * **splice_read**: deprecated - Does nothing.
 * **splice_write**: deprecated - Does nothing.
 * **splice_move**: deprecated - Does nothing.
-* **allow_other**: deprecated - mergerfs always sets this FUSE option
-  as normal permissions can be used to limit access.
+* **allow_other**: deprecated - mergerfs v2.35.0 and newer sets this FUSE option
+  automatically if running as root.
 * **use_ino**: deprecated - mergerfs should always control inode
   calculation so this is enabled all the time.
 
@@ -400,7 +418,7 @@ or file is to be selected or something changes out of band it becomes
 unclear what value should be used. Most software does not to care what
 the values are but those that do often break if a value changes
 unexpectedly. The tool `find` will abort a directory walk if it sees a
-directory inode change. NFS will return stale handle errors if the
+directory inode change. NFS can return stale handle errors if the
 inode changes out of band. File dedup tools will usually leverage
 device ids and inodes as a shortcut in searching for duplicate files
 and would resort to full file comparisons should it find different
@@ -655,10 +673,31 @@ writable.
 Even though it's a more niche situation this hack breaks normal
 security and behavior and as such is `off` by default. If set to `git`
 it will only perform the hack when the path in question includes
-`/.git/`. `all` will result it applying anytime a readonly file which
+`/.git/`. `all` will result it applying anytime a read-only file which
 is empty is opened for writing.
 
 
+### export-support
+
+In theory this flag should not be exposed to the end user. It is a
+low-level FUSE flag which indicates whether or not the kernel can send
+certain kinds of messages to it for the purposes of using with
+NFS. mergerfs does support these messages but due to a possible bug in
+the Linux kernel this option needs to be configurable. As it turns out
+at least certain versions of NFS can still work when disabled and no
+longer triggers the bug.
+
+While it may be safe to default this setting to `false` in an
+abundance of caution it is being left enabled by default.
+
+Given that this flag is set when the FUSE connection is first
+initiated it is not possible to change during run time.
+
+See [Kernel Issues &
+Bugs](https://github.com/trapexit/mergerfs/wiki/Kernel-Issues-&-Bugs)
+for more details.
+
+
 # FUNCTIONS, CATEGORIES and POLICIES
 
 The POSIX filesystem API is made up of a number of
@@ -674,9 +713,8 @@ rather than file paths, which were created by `open` or `create`. That
 said many times the current FUSE kernel driver will not always provide
 the file handle when a client calls `fgetattr`, `fchown`, `fchmod`,
 `futimens`, `ftruncate`, etc. This means it will call the regular,
-path based, versions. `readdir` has no real need for a policy given
-the purpose is merely to return a list of entries in a
-directory. `statfs`'s behavior can be modified via other options.
+path based, versions. `statfs`'s behavior can be modified via other
+options.
 
 When using policies which are based on a branch's available space the
 base path provided is used. Not the full path to the file in
@@ -684,8 +722,8 @@ question. Meaning that mounts in the branch won't be considered in the
 space calculations. The reason is that it doesn't really work for
 non-path preserving policies and can lead to non-obvious behaviors.
 
-NOTE: While any policy can be assigned to a function or category
-though some may not be very useful in practice. For instance: **rand**
+NOTE: While any policy can be assigned to a function or category,
+some may not be very useful in practice. For instance: **rand**
 (random) may be useful for file creation (create) but could lead to
 very odd behavior if used for `chmod` if there were more than one copy
 of the file.
@@ -707,8 +745,7 @@ In cases where something may be searched for (such as a path to clone)
 ### Policies
 
 A policy is the algorithm used to choose a branch or branches for a
-function to work on. Think of them as ways to filter and sort
-branches.
+function to work on or generally how the function behaves.
 
 Any function in the `create` category will clone the relative path if
 needed. Some other functions (`rename`,`link`,`ioctl`) have special
@@ -717,12 +754,11 @@ requirements or behaviors which you can read more about below.
 
 #### Filtering
 
-Policies basically search branches and create a list of files / paths
+Most policies basically search branches and create a list of files / paths
 for functions to work on. The policy is responsible for filtering and
 sorting the branches. Filters include **minfreespace**, whether or not
 a branch is mounted read-only, and the branch tagging
-(RO,NC,RW). These filters are applied across all policies unless
-otherwise noted.
+(RO,NC,RW). These filters are applied across most policies.
 
 * No **search** function policies filter.
 * All **action** function policies filter out branches which are
@@ -739,6 +775,12 @@ If all branches are filtered an error will be returned. Typically
 device) depending on the most recent reason for filtering a
 branch. **ENOENT** will be returned if no eligible branch is found.
 
+If **create**, **mkdir**, **mknod**, or **symlink** fail with `EROFS`
+or other fundimental errors then mergerfs will mark any branch found
+to be read-only as such (IE will set the mode `RO`) and will rerun the
+policy and try again. This is mostly for `ext4` filesystems that can
+suddenly become read-only when it encounters an error.
+
 
 #### Path Preservation
 
@@ -809,6 +851,26 @@ policies is not appropriate.
 | search   | ff     |
 
 
+#### func.readdir
+
+examples: `func.readdir=seq`, `func.readdir=cor:4`
+
+`readdir` has policies to control how it manages reading directory
+content.
+
+| Policy | Description |
+|--------|-------------|
+| seq    | "sequential" : Iterate over branches in the order defined. This is the default and traditional behavior found prior to the readdir policy introduction. |
+| cosr   | "concurrent open, sequential read" : Concurrently open branch directories using a thread pool and process them in order of definition. This keeps memory and CPU usage low while also reducing the time spent waiting on branches to respond. Number of threads defaults to the number of logical cores. Can be overwritten via the syntax `func.readdir=cosr:N` where `N` is the number of threads. |
+| cor    | "concurrent open and read" : Concurrently open branch directories and immediately start reading their contents using a thread pool. This will result in slightly higher memory and CPU usage but reduced latency. Particularly when using higher latency / slower speed network filesystem branches. Unlike `seq` and `cosr` the order of files could change due the async nature of the thread pool. Number of threads defaults to the number of logical cores. Can be overwritten via the syntax `func.readdir=cor:N` where `N` is the number of threads.
+
+Keep in mind that `readdir` mostly just provides a list of file names
+in a directory and possibly some basic metadata about said files. To
+know details about the files, as one would see from commands like
+`find` or `ls`, it is required to call `stat` on the file which is
+controlled by `fuse.getattr`.
+
+
 #### ioctl
 
 When `ioctl` is used with an open file then it will use the file
@@ -877,19 +939,6 @@ returned but it will still be possible.
 **link** uses the same strategy but without the removals.
 
 
-#### readdir ####
-
-[readdir](http://linux.die.net/man/3/readdir) is different from all
-other filesystem functions. While it could have its own set of
-policies to tweak its behavior at this time it provides a simple union
-of files and directories found. Remember that any action or
-information queried about these files and directories come from the
-respective function. For instance: an **ls** is a **readdir** and for
-each file/directory returned **getattr** is called. Meaning the policy
-of **getattr** is responsible for choosing the file/directory which is
-the source of the metadata you see in an **ls**.
-
-
 #### statfs / statvfs ####
 
 [statvfs](http://linux.die.net/man/2/statvfs) normalizes the source
@@ -904,6 +953,27 @@ The options `statfs` and `statfs_ignore` can be used to modify
 `statfs` behavior.
 
 
+#### flush-on-close
+
+https://lkml.kernel.org/linux-fsdevel/20211024132607.1636952-1-amir73il@gmail.com/T/
+
+By default FUSE would issue a flush before the release of a file
+descriptor. This was considered a bit aggressive and a feature added
+to give the FUSE server the ability to choose when that happens.
+
+Options:
+* always
+* never
+* opened-for-write
+
+For now it defaults to "opened-for-write" which is less aggressive
+than the behavior before this feature was added. It should not be a
+problem because the flush is really only relevant when a file is
+written to. Given flush is irrelevant for many filesystems in the
+future a branch specific flag may be added so only files opened on a
+specific branch would be flushed on close.
+
+
 # ERROR HANDLING
 
 POSIX filesystem functions offer a single return code meaning that
@@ -1120,7 +1190,9 @@ issue: `umount -l <mergerfs_mountpoint>`. Or you can let mergerfs do
 it by setting the option `lazy-umount-mountpoint=true`.
 
 
-# RUNTIME CONFIG
+# RUNTIME INTERFACES
+
+## RUNTIME CONFIG
 
 #### .mergerfs pseudo file ####
 
@@ -1203,8 +1275,139 @@ following:
 * **user.mergerfs.allpaths**: a NUL ('\0') separated list of full paths to all files found
 
 
+## SIGNALS
+
+* USR1: This will cause mergerfs to send invalidation notifications to
+  the kernel for all files. This will cause all unused files to be
+  released from memory.
+* USR2: Trigger a general cleanup of currently unused memory. A more
+  thorough version of what happens every ~15 minutes.
+
+
+## IOCTLS
+
+Found in `fuse_ioctl.cpp`:
+
+```C++
+typedef char IOCTL_BUF[4096];
+#define IOCTL_APP_TYPE  0xDF
+#define IOCTL_FILE_INFO            _IOWR(IOCTL_APP_TYPE,0,IOCTL_BUF)
+#define IOCTL_GC                   _IO(IOCTL_APP_TYPE,1)
+#define IOCTL_GC1                  _IO(IOCTL_APP_TYPE,2)
+#define IOCTL_INVALIDATE_ALL_NODES _IO(IOCTL_APP_TYPE,3)
+```
+
+* IOCTL\_FILE\_INFO: Same as the "file / directory xattrs" mentioned
+  above. Use a buffer size of 4096 bytes. Pass in a string of
+  "basepath", "relpath", "fullpath", or "allpaths". Receive details in
+  same buffer.
+* IOCTL\_GC: Triggers a thorough garbage collection of excess
+  memory. Same as SIGUSR2.
+* IOCTL\_GC1: Triggers a simple garbage collection of excess
+  memory. Same as what happens every 15 minutes normally.
+* IOCTL\_INVALIDATE\_ALL\_NODES: Same as SIGUSR1. Send invalidation
+  notifications to the kernel for all files causing unused files to be
+  released from memory.
+
+
 # TOOLING
 
+## preload.so
+
+EXPERIMENTAL
+
+For some time there has been work to enable passthrough IO in
+FUSE. Passthrough IO would allow for near native performance with
+regards to reads and writes (at the expense of certain mergerfs
+features.) However, there have been several complications which have
+kept the feature from making it into the mainline Linux kernel. Until
+that feature is available there are two methods to provide similar
+functionality. One method is using the LD_PRELOAD feature of the
+dynamic linker. The other leveraging ptrace to intercept
+syscalls. Each has their disadvantages. At the moment only a preload
+based tool is available. A ptrace based tool may be developed later if
+there is a need.
+
+`/usr/lib/mergerfs/preload.so`
+
+This [preloadable
+library](https://man7.org/linux/man-pages/man8/ld.so.8.html#ENVIRONMENT)
+overrides the creation and opening of files in order to simulate
+passthrough file IO. It catches the open/creat/fopen calls, has
+mergerfs do the call, queries mergerfs for the branch the file exists
+on, reopens the file on the underlying filesystem and returns that
+instead. Meaning that you will get native read/write performance
+because mergerfs is no longer part of the workflow. Keep in mind that
+this also means certain mergerfs features that work by interrupting
+the read/write workflow, such as `moveonenospc`, will no longer work.
+
+Also understand that this will only work on dynamically linked
+software. Anything statically compiled will not work. Many GoLang and
+Rust apps are statically compiled.
+
+The library will not interfere with non-mergerfs filesystems. The
+library is written to always fallback to returning the mergerfs opened
+file on error.
+
+While the library was written to account for a number of edgecases
+there could be some yet accounted for so please report any oddities.
+
+Thank you to
+[nohajc](https://github.com/nohajc/mergerfs-io-passthrough) for
+prototyping the idea.
+
+
+### general usage
+
+```sh
+LD_PRELOAD=/usr/lib/mergerfs/preload.so touch /mnt/mergerfs/filename
+```
+
+### Docker usage
+
+Assume `/mnt/fs0` and `/mnt/fs1` are pooled with mergerfs at `/media`.
+
+All mergerfs branch paths *must* be bind mounted into the container at
+the same path as found on the host so the preload library can see them.
+
+```sh
+docker run \
+  -e LD_PRELOAD=/usr/lib/mergerfs/preload.so \
+  -v /usr/lib/mergerfs/preload.so:/usr/lib/mergerfs/preload.so:ro \
+  -v /media:/data \
+  -v /mnt:/mnt \
+  ubuntu:latest \
+  bash
+```
+
+or more explicitly
+
+```sh
+docker run \
+  -e LD_PRELOAD=/usr/lib/mergerfs/preload.so \
+  -v /usr/lib/mergerfs/preload.so:/usr/lib/mergerfs/preload.so:ro \
+  -v /media:/data \
+  -v /mnt/fs0:/mnt/fs0 \
+  -v /mnt/fs1:/mnt/fs1 \
+  ubuntu:latest \
+  bash
+```
+
+### systemd unit
+
+Use the `Environment` option to set the LD_PRELOAD variable.
+
+* https://www.freedesktop.org/software/systemd/man/latest/systemd.service.html#Command%20lines
+* https://serverfault.com/questions/413397/how-to-set-environment-variable-in-systemd-service
+
+```
+[Service]
+Environment=LD_PRELOAD=/usr/lib/mergerfs/preload.so
+```
+
+
+## Misc
+
 * https://github.com/trapexit/mergerfs-tools
   * mergerfs.ctl: A tool to make it easier to query and configure mergerfs at runtime
   * mergerfs.fsck: Provides permissions and ownership auditing and the ability to fix them
@@ -1235,12 +1438,13 @@ https://en.wikipedia.org/wiki/Page_cache
   unchanged since previous open.
 * cache.files=libfuse: follow traditional libfuse `direct_io`,
   `kernel_cache`, and `auto_cache` arguments.
-* cache.files=per-process: Enable page caching only for processes
-  which 'comm' name matches one of the values defined in
-  `cache.files.process-names`.
+* cache.files=per-process: Enable page caching (equivalent to
+  `cache.files=partial`) only for processes whose 'comm' name matches
+  one of the values defined in `cache.files.process-names`. If the
+  name does not match the file open is equivalent to
+  `cache.files=off`.
 
-FUSE, which mergerfs uses, offers a number of page caching
-modes. mergerfs tries to simplify their use via the `cache.files`
+FUSE, which mergerfs uses, offers a number of page caching modes. mergerfs tries to simplify their use via the `cache.files`
 option. It can and should replace usage of `direct_io`,
 `kernel_cache`, and `auto_cache`.
 
@@ -1369,7 +1573,7 @@ placing of usually smaller, faster storage as a transparent cache to
 larger, slower storage. NVMe, SSD, Optane in front of traditional HDDs
 for instance.
 
-MergerFS does not natively support any sort of tiered caching. Most
+mergerfs does not natively support any sort of tiered caching. Most
 users have no use for such a feature and its inclusion would
 complicate the code. However, there are a few situations where a cache
 filesystem could help with a typical mergerfs setup.
@@ -1461,6 +1665,7 @@ understand what behaviors it may impact
 * disable `security_capability` and/or `xattr`
 * increase cache timeouts `cache.attr`, `cache.entry`, `cache.negative_entry`
 * enable (or disable) page caching (`cache.files`)
+* enable `parallel-direct-writes`
 * enable `cache.writeback`
 * enable `cache.statfs`
 * enable `cache.symlinks`
@@ -1664,13 +1869,9 @@ on page caching.
 
 #### NFS clients returning ESTALE / Stale file handle
 
-NFS does not like out of band changes. That is especially true of
-inode values.
-
-Be sure to use the following options:
-
-* noforget
-* inodecalc=path-hash
+NFS generally does not like out of band changes. Take a look at the
+section on NFS in the [#remote-filesystems](#remote-filesystems) for
+more details.
 
 
 #### rtorrent fails with ENODEV (No such device)
@@ -1820,6 +2021,137 @@ containers or use a standard shared user & groups technology like NIS
 or LDAP.
 
 
+# Remote Filesystems
+
+Many users ask about compatibility with remote filesystems. This
+section is to describe any known issues or quirks when using mergerfs
+with common remote filesystems.
+
+Keep in mind that, like with caching, it is not a good idea to change
+the contents of the remote filesystem
+[out-of-band](https://en.wikipedia.org/wiki/Out-of-band). Meaning that
+you really shouldn't change the contents of the underlying
+filesystems or mergerfs on the server hosting the remote
+filesystem. Doing so can lead to weird behavior, inconsistency,
+errors, and even data corruption should multiple programs try to write
+or read the same data at the same time. This isn't to say you can't do
+it or that data corruption is likely but it *could* happen. It is
+better to always use the remote filesystem. Even on the machine
+serving it.
+
+
+## NFS
+
+[NFS](https://en.wikipedia.org/wiki/Network_File_System) is a common
+remote filesystem on Unix/POSIX systems. Due to how NFS works there
+are some settings which need to be set in order for mergerfs to work
+with it.
+
+It should be noted that NFS and FUSE (the technology mergerfs uses)
+do not work perfectly with one another due to certain design
+choices in FUSE (and mergerfs.) Due to these issues it is
+generally recommended to use SMB when possible till situations
+change. That said issues should still be reported. NFS is not really
+recommended but it isn't unsupported.
+
+mergerfs settings:
+* noforget
+* inodecalc=path-hash
+* export-support=false (only available in v2.40.0 and above)
+
+NFS export settings:
+* fsid=UUID
+* no\_root\_squash
+
+`noforget` is needed because NFS uses the `name_to_handle_at` and
+`open_by_handle_at` functions which allow a program to keep a
+reference to a file without technically having it open in the typical
+sense. The problem is that FUSE has no way to know that NFS has a
+handle that it will later use to open the file again. As a result it
+is possible for the kernel to tell mergerfs to forget about the node
+and should NFS ever ask for that node's details in the future it would
+have nothing to respond with. Keeping nodes around forever is not
+ideal but at the moment the only way to manage the situation.
+
+`inodecalc=path-hash` is needed because NFS is sensitive to
+out-of-band changes. FUSE doesn't care if a file's inode value changes
+but NFS, being stateful, does. So if you used the default inode
+calculation algorithm then it is possible that if you changed a file
+or updated a directory the file mergerfs will use will be on a
+different branch and therefore the inode would change. This isn't an
+ideal solution and others are being considered but it works for most
+situations. It might be possible to leave the default value of
+`hybrid-hash` if `export-support=false` but it hasn't been fully
+tested yet.
+
+`export-support=false` is a low-level FUSE option that is needed as a
+workaround to a Linux kernel bug. Technically this option should be
+set to `true` when expecting to use mergerfs with NFS but it turns out
+that at least some versions of NFS work when not enabled. At the
+moment it is unclear if this has any negative side effects but when
+disabled NFS appears to work alright and the kernel no longer sends
+invalid requests. When the issue is resolved in the kernel these docs
+will be updated with appropriate details.
+
+Also see [Kernel Issues &
+Bugs](https://github.com/trapexit/mergerfs/wiki/Kernel-Issues-&-Bugs)
+for more details.
+
+`fsid=UUID` is needed because FUSE filesystems don't have different
+`st_dev` values which can cause issues when exporting. The easiest
+thing to do is set each mergerfs export `fsid` to some random
+value. An easy way to generate a random value is to use the command
+line tool `uuidgen` or through a website such as
+[uuidgenerator.net](https://www.uuidgenerator.net/).
+
+`no_root_squash` is not strictly necessary but can lead to confusing
+permission and ownership issues.
+
+
+## SMB / CIFS
+
+[SMB](https://en.wikipedia.org/wiki/Server_Message_Block) is a
+protocol most used by Microsoft Windows systems to share file shares,
+printers, etc. However, due to the popularity for Windows, it is also
+supported on many other platforms including Linux. The most popular
+way of supporting SMB on Linux is via the software Samba.
+
+[Samba](https://en.wikipedia.org/wiki/Samba_(software)), and other
+ways of serving Linux filesystems, via SMB should work fine with
+mergerfs. The services do not tend to use the same technologies which
+NFS uses and therefore don't have the same issues. There should not be
+an special settings required to use mergerfs with Samba. However,
+[CIFSD](https://en.wikipedia.org/wiki/CIFSD) and other programs have
+not been extensively tested. If you use mergerfs with CIFSD or other
+SMB servers please submit your experiences so these docs can be
+updated.
+
+
+## SSHFS
+
+[SSHFS](https://en.wikipedia.org/wiki/SSHFS) is a FUSE filesystem
+leveraging SSH as the connection and transport layer. While often
+simpler to setup when compared to NFS or Samba the performance can be
+lacking and the project is very much in maintenance mode.
+
+There are no known issues using sshfs with mergerfs. You may want to
+use the following arguments to improve performance but your millage
+may vary.
+
+* `-o Ciphers=arcfour`
+* `-o Compression=no`
+
+More info can be found
+[here](https://ideatrash.net/2016/08/odds-and-ends-optimizing-sshfs-moving.html).
+
+
+## Other
+
+There are other remote filesystems but none popularly used to serve
+mergerfs. If you use something not listed above feel free to reach out
+and I will add it to the list.
+
+
 # FAQ
 
 #### How well does mergerfs scale? Is it "production ready?"
@@ -1841,18 +2173,51 @@ of which are fixed in stable releases.
 
 #### Can mergerfs be used with filesystems which already have data / are in use?
 
-Yes. MergerFS is a proxy and does **NOT** interfere with the normal
-form or function of the filesystems / mounts / paths it manages.
+Yes. mergerfs is really just a proxy and does **NOT** interfere with
+the normal form or function of the filesystems / mounts / paths it
+manages. It is just another userland application that is acting as a
+man-in-the-middle. It can't do anything that any other random piece of
+software can't do.
 
-MergerFS is **not** a traditional filesystem. MergerFS is **not**
-RAID. It does **not** manipulate the data that passes through it. It
-does **not** shard data across filesystems. It merely shards some
-**behavior** and aggregates others.
+mergerfs is **not** a traditional filesystem that takes control over
+the underlying block device. mergerfs is **not** RAID. It does **not**
+manipulate the data that passes through it. It does **not** shard data
+across filesystems. It merely shards some **behavior** and aggregates
+others.
+
+
+#### Can drives/filesystems be removed from the pool at will?
+
+Yes. See previous question's answer.
 
 
 #### Can mergerfs be removed without affecting the data?
 
-See the previous question's answer.
+Yes. See the previous question's answer.
+
+
+#### Can drives/filesystems be moved to another pool?
+
+Yes. See the previous question's answer.
+
+
+#### How do I migrate data into or out of the pool when adding/removing drives/filesystems?
+
+You don't need to. See the previous question's answer.
+
+
+#### How do I remove a drive/filesystem but keep the data in the pool?
+
+Nothing special needs to be done. Remove the branch from mergerfs'
+config and copy (rsync) the data from the removed filesystem into the
+pool. Effectively the same as if it were you transfering data from one
+filesystem to another.
+
+If you wish to continue using the pool while performing the transfer
+simply create another, temporary pool without the filesystem in
+question and then copy the data. It would probably be a good idea to
+set the branch to `RO` prior to doing this to ensure no new content is
+written to the filesystem while performing the copy.
 
 
 #### What policies should I use?
@@ -1921,15 +2286,16 @@ first directory will be placed on the same branch because it is
 preserving paths.
 
 This catches a lot of new users off guard but changing the default
-would break the setup for many existing users. If you do not care
-about path preservation and wish your files to be spread across all
-your filesystems change to `mfs` or similar policy as described
-above. If you do want path preservation you'll need to perform the
-manual act of creating paths on the filesystems you want the data to
-land on before transferring your data. Setting `func.mkdir=epall` can
-simplify managing path preservation for `create`. Or use
-`func.mkdir=rand` if you're interested in just grouping together
-directory content by filesystem.
+would break the setup for many existing users and this policy is the
+safest policy as it will not change the general layout of the existing
+filesystems. If you do not care about path preservation and wish your
+files to be spread across all your filesystems change to `mfs` or
+similar policy as described above. If you do want path preservation
+you'll need to perform the manual act of creating paths on the
+filesystems you want the data to land on before transferring your
+data. Setting `func.mkdir=epall` can simplify managing path
+preservation for `create`. Or use `func.mkdir=rand` if you're
+interested in just grouping together directory content by filesystem.
 
 
 #### Do hardlinks work?
@@ -1951,6 +2317,16 @@ mergerfs pool that includes all the paths you need if you want links
 to work.
 
 
+#### Does FICLONE or FICLONERANGE work?
+
+Unfortunately not. FUSE, the technology mergerfs is based on, does not
+support the `clone_file_range` feature needed for it to work. mergerfs
+won't even know such a request is made. The kernel will simply return
+an error back to the application making the request.
+
+Should FUSE gain the ability mergerfs will be updated to support it.
+
+
 #### Can I use mergerfs without SnapRAID? SnapRAID without mergerfs?
 
 Yes. They are completely unrelated pieces of software.
@@ -2012,8 +2388,8 @@ values are correct and that directories have their executable bit
 set. A common mistake by users new to Linux is to `chmod -R 644` when
 they should have `chmod -R u=rwX,go=rX`.
 
-If using a network filesystem such as NFS, SMB, CIFS (Samba) be sure
-to pay close attention to anything regarding permissioning and
+If using a network filesystem such as NFS or SMB (Samba) be sure to
+pay close attention to anything regarding permissioning and
 users. Root squashing and user translation for instance has bitten a
 few mergerfs users. Some of these also affect the use of mergerfs from
 container platforms such as Docker.
@@ -2069,103 +2445,6 @@ traditional read/write fallback to be provided. The splice code was
 removed to simplify the codebase.
 
 
-#### Why use mergerfs over mhddfs?
-
-mhddfs is no longer maintained and has some known stability and
-security issues (see below). MergerFS provides a superset of mhddfs'
-features and should offer the same or maybe better performance.
-
-Below is an example of mhddfs and mergerfs setup to work similarly.
-
-`mhddfs -o mlimit=4G,allow_other /mnt/drive1,/mnt/drive2 /mnt/pool`
-
-`mergerfs -o minfreespace=4G,category.create=ff /mnt/drive1:/mnt/drive2 /mnt/pool`
-
-
-#### Why use mergerfs over aufs?
-
-aufs is mostly abandoned and no longer available in many distros.
-
-While aufs can offer better peak performance mergerfs provides more
-configurability and is generally easier to use. mergerfs however does
-not offer the overlay / copy-on-write (CoW) features which aufs and
-overlayfs have.
-
-
-#### Why use mergerfs over unionfs?
-
-UnionFS is more like aufs than mergerfs in that it offers overlay /
-CoW features. If you're just looking to create a union of filesystems
-and want flexibility in file/directory placement then mergerfs offers
-that whereas unionfs is more for overlaying RW filesystems over RO
-ones.
-
-
-#### Why use mergerfs over overlayfs?
-
-Same reasons as with unionfs.
-
-
-#### Why use mergerfs over LVM/ZFS/BTRFS/RAID0 drive concatenation / striping?
-
-With simple JBOD / drive concatenation / stripping / RAID0 a single
-drive failure will result in full pool failure. mergerfs performs a
-similar function without the possibility of catastrophic failure and
-the difficulties in recovery. Drives may fail, however, all other data
-will continue to be accessible.
-
-When combined with something like [SnapRaid](http://www.snapraid.it)
-and/or an offsite backup solution you can have the flexibility of JBOD
-without the single point of failure.
-
-
-#### Why use mergerfs over ZFS?
-
-MergerFS is not intended to be a replacement for ZFS. MergerFS is
-intended to provide flexible pooling of arbitrary filesystems (local
-or remote), of arbitrary sizes, and arbitrary filesystems. For `write
-once, read many` usecases such as bulk media storage. Where data
-integrity and backup is managed in other ways. In that situation ZFS
-can introduce a number of costs and limitations as described
-[here](http://louwrentius.com/the-hidden-cost-of-using-zfs-for-your-home-nas.html),
-[here](https://markmcb.com/2020/01/07/five-years-of-btrfs/), and
-[here](https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSWhyNoRealReshaping).
-
-
-#### Why use mergerfs over UnRAID?
-
-UnRAID is a full OS and its storage layer, as I understand, is
-proprietary and closed source. Users who have experience with both
-have said they prefer the flexibility offered by mergerfs and for some
-the fact it is free and open source is important.
-
-There are a number of UnRAID users who use mergerfs as well though I'm
-not entirely familiar with the use case.
-
-
-#### Why use mergerfs over StableBit's DrivePool?
-
-DrivePool works only on Windows so not as common an alternative as
-other Linux solutions. If you want to use Windows then DrivePool is a
-good option. Functionally the two projects work a bit
-differently. DrivePool always writes to the filesystem with the most
-free space and later rebalances. mergerfs does not offer rebalance but
-chooses a branch at file/directory create time. DrivePool's
-rebalancing can be done differently in any directory and has file
-pattern matching to further customize the behavior. mergerfs, not
-having rebalancing does not have these features, but similar features
-are planned for mergerfs v3. DrivePool has builtin file duplication
-which mergerfs does not natively support (but can be done via an
-external script.)
-
-There are a lot of misc differences between the two projects but most
-features in DrivePool can be replicated with external tools in
-combination with mergerfs.
-
-Additionally DrivePool is a closed source commercial product vs
-mergerfs a ISC licensed OSS project.
-
-
 #### What should mergerfs NOT be used for?
 
 * databases: Even if the database stored data in separate files
@@ -2232,37 +2511,13 @@ it won't show up.
 You can remove the reserve by running: `tune2fs -m 0 <device>`
 
 
-#### Can mergerfs mounts be exported over NFS?
-
-Yes, however if you do anything which may changes files out of band
-(including for example using the `newest` policy) it will result in
-"stale file handle" errors unless properly setup.
-
-Be sure to use the following options:
-
-* noforget
-* inodecalc=path-hash
-
-
-#### Can mergerfs mounts be exported over Samba / SMB?
-
-Yes. While some users have reported problems it appears to always be
-related to how Samba is setup in relation to permissions.
-
-
-#### Can mergerfs mounts be used over SSHFS?
-
-Yes.
-
-
 #### I notice massive slowdowns of writes when enabling cache.files.
 
-When file caching is enabled in any form (`cache.files!=off` or
-`direct_io=false`) it will issue `getxattr` requests for
-`security.capability` prior to *every single write*. This will usually
-result in a performance degradation, especially when using a network
-filesystem (such as NFS or CIFS/SMB/Samba.) Unfortunately at this
-moment the kernel is not caching the response.
+When file caching is enabled in any form (`cache.files!=off`) it will
+issue `getxattr` requests for `security.capability` prior to *every
+single write*. This will usually result in a performance degradation,
+especially when using a network filesystem (such as NFS or SMB.)
+Unfortunately at this moment the kernel is not caching the response.
 
 To work around this situation mergerfs offers a few solutions.
 
@@ -2317,6 +2572,114 @@ used so threads trying to change credentials don't starve. This isn't
 the best solution but should work reasonably well assuming there are
 few users.
 
+# mergerfs versus X
+
+#### mhddfs
+
+mhddfs had not been maintained for some time and has some known
+stability and security issues. mergerfs provides a superset of mhddfs'
+features and should offer the same or better performance.
+
+Below is an example of mhddfs and mergerfs setup to work similarly.
+
+`mhddfs -o mlimit=4G,allow_other /mnt/drive1,/mnt/drive2 /mnt/pool`
+
+`mergerfs -o minfreespace=4G,category.create=ff /mnt/drive1:/mnt/drive2 /mnt/pool`
+
+
+#### aufs
+
+aufs is mostly abandoned and no longer available in most Linux distros.
+
+While aufs can offer better peak performance mergerfs provides more
+configurability and is generally easier to use. mergerfs however does
+not offer the overlay / copy-on-write (CoW) features which aufs has.
+
+
+#### unionfs-fuse
+
+unionfs-fuse is more like aufs than mergerfs in that it offers overlay /
+copy-on-write (CoW) features. If you're just looking to create a union
+of filesystems and want flexibility in file/directory placement then
+mergerfs offers that whereas unionfs is more for overlaying read/write
+filesystems over read-only ones.
+
+
+#### overlayfs
+
+overlayfs is similar to aufs and unionfs-fuse in that it also is
+primarily used to layer a read/write filesystem over one or more
+read-only filesystems. It does not have the ability to spread
+files/directories across numerous filesystems.
+
+
+#### RAID0, JBOD, drive concatenation, striping
+
+With simple JBOD / drive concatenation / stripping / RAID0 a single
+drive failure will result in full pool failure. mergerfs performs a
+similar function without the possibility of catastrophic failure and
+the difficulties in recovery. Drives may fail but all other
+filesystems and their data will continue to be accessible.
+
+The main practical difference with mergerfs is the fact you don't
+actually have contiguous space as large as if you used those other
+technologies. Meaning you can't create a 2TB file on a pool of 2 1TB
+filesystems.
+
+When combined with something like [SnapRaid](http://www.snapraid.it)
+and/or an offsite backup solution you can have the flexibility of JBOD
+without the single point of failure.
+
+
+#### UnRAID
+
+UnRAID is a full OS and its storage layer, as I understand, is
+proprietary and closed source. Users who have experience with both
+have often said they prefer the flexibility offered by mergerfs and
+for some the fact it is open source is important.
+
+There are a number of UnRAID users who use mergerfs as well though I'm
+not entirely familiar with the use case.
+
+For semi-static data mergerfs + [SnapRaid](http://www.snapraid.it)
+provides a similar solution.
+
+
+#### ZFS
+
+mergerfs is very different from ZFS. mergerfs is intended to provide
+flexible pooling of arbitrary filesystems (local or remote), of
+arbitrary sizes, and arbitrary filesystems. For `write once, read
+many` usecases such as bulk media storage. Where data integrity and
+backup is managed in other ways. In those usecases ZFS can introduce a
+number of costs and limitations as described
+[here](http://louwrentius.com/the-hidden-cost-of-using-zfs-for-your-home-nas.html),
+[here](https://markmcb.com/2020/01/07/five-years-of-btrfs/), and
+[here](https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSWhyNoRealReshaping).
+
+
+#### StableBit's DrivePool
+
+DrivePool works only on Windows so not as common an alternative as
+other Linux solutions. If you want to use Windows then DrivePool is a
+good option. Functionally the two projects work a bit
+differently. DrivePool always writes to the filesystem with the most
+free space and later rebalances. mergerfs does not offer rebalance but
+chooses a branch at file/directory create time. DrivePool's
+rebalancing can be done differently in any directory and has file
+pattern matching to further customize the behavior. mergerfs, not
+having rebalancing does not have these features, but similar features
+are planned for mergerfs v3. DrivePool has builtin file duplication
+which mergerfs does not natively support (but can be done via an
+external script.)
+
+There are a lot of misc differences between the two projects but most
+features in DrivePool can be replicated with external tools in
+combination with mergerfs.
+
+Additionally DrivePool is a closed source commercial product vs
+mergerfs a ISC licensed OSS project.
+
 
 # SUPPORT
 

libfuse/Makefile

@@ -15,6 +15,12 @@ else
 OPT_FLAGS := -O2
 endif
 
+ifeq ($(LTO),1)
+LTO_FLAGS := -flto
+else
+LTO_FLAGS :=
+endif
+
 DESTDIR       =
 PREFIX        = /usr/local
 EXEC_PREFIX   = $(PREFIX)
@@ -38,7 +44,7 @@ SRC_C = \
 	lib/fuse.c \
 	lib/fuse_dirents.c \
 	lib/fuse_lowlevel.c \
-	lib/fuse_mt.c \
+	lib/node.c \
 	lib/fuse_node.c \
 	lib/fuse_opt.c \
 	lib/fuse_session.c \
@@ -49,7 +55,8 @@ SRC_CPP = \
 	lib/format.cpp \
 	lib/os.cpp \
 	lib/cpu.cpp \
-	lib/fuse_loop_mt.cpp \
+	lib/fuse_config.cpp \
+	lib/fuse_loop.cpp \
 	lib/fuse_msgbuf.cpp
 OBJS_C   = $(SRC_C:lib/%.c=build/%.o)
 OBJS_CPP = $(SRC_CPP:lib/%.cpp=build/%.o)
@@ -59,12 +66,14 @@ CFLAGS ?= \
 	$(OPT_FLAGS)
 CFLAGS := \
 	${CFLAGS} \
+	$(LTO_FLAGS) \
 	-std=gnu99 \
 	-Wall \
 	-pipe \
 	-MMD
 CXXFLAGS := \
 	${CXXFLAGS} \
+	$(LTO_FLAGS) \
 	-std=c++11 \
 	-Wall \
 	-pipe \

libfuse/include/fuse.h

@@ -539,6 +539,16 @@ struct fuse_operations
                              off_t                   offset_out,
                              size_t                  size,
                              int                     flags);
+
+  ssize_t (*setupmapping)(uint64_t *fh_,
+                          uint64_t  foffset_,
+                          uint64_t  len_,
+                          uint64_t  flags_,
+                          uint64_t  moffset_);
+
+  int (*removemapping)();
+  int (*syncfs)();
+  int (*tmpfile)(const char *, mode_t, fuse_file_info_t *);
 };
 
 /** Extra context that may be needed by some filesystems
@@ -629,6 +639,7 @@ void fuse_exit(struct fuse *f);
 
 int fuse_config_read_thread_count(const struct fuse *f);
 int fuse_config_process_thread_count(const struct fuse *f);
+int fuse_config_process_thread_queue_depth(const struct fuse *f);
 const char* fuse_config_pin_threads(const struct fuse *f);
 
 /**
@@ -764,6 +775,10 @@ void fuse_set_getcontext_func(struct fuse_context *(*func)(void));
 /** Get session from fuse object */
 struct fuse_session *fuse_get_session(struct fuse *f);
 
+void fuse_gc1();
+void fuse_gc();
+void fuse_invalidate_all_nodes();
+
 EXTERN_C_END
 
 #endif /* _FUSE_H_ */

libfuse/include/fuse_common.h

@@ -84,6 +84,10 @@ struct fuse_file_info_t
 
   uint32_t auto_cache : 1;
 
+  uint32_t parallel_direct_writes:1;
+
+  uint32_t noflush:1;
+
   /** File handle.  May be filled in by filesystem in open().
       Available in all other file operations */
   uint64_t fh;

libfuse/include/fuse_config.hpp

@@ -0,0 +1,31 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#pragma once
+
+#include <string>
+
+int         fuse_config_get_read_thread_count();
+int         fuse_config_get_process_thread_count();
+int         fuse_config_get_process_thread_queue_depth();
+std::string fuse_config_get_pin_threads();
+
+void        fuse_config_set_read_thread_count(int const);
+void        fuse_config_set_process_thread_count(int const);
+void        fuse_config_set_process_thread_queue_depth(int const);
+void        fuse_config_set_pin_threads(std::string const);

libfuse/include/fuse_dirents.h

@@ -63,14 +63,14 @@ int  fuse_dirents_add_plus(fuse_dirents_t      *d,
                            const uint64_t       namelen,
                            const fuse_entry_t  *entry,
                            const struct stat   *st);
-int  fuse_dirents_add_linux(fuse_dirents_t              *d,
-                            const struct linux_dirent64 *de,
-                            const uint64_t               namelen);
-int  fuse_dirents_add_linux_plus(fuse_dirents_t              *d,
-                                 const struct linux_dirent64 *de,
-                                 const uint64_t               namelen,
-                                 const fuse_entry_t          *entry,
-                                 const struct stat           *st);
+int  fuse_dirents_add_linux(fuse_dirents_t         *d,
+                            const linux_dirent64_t *de,
+                            const uint64_t          namelen);
+int  fuse_dirents_add_linux_plus(fuse_dirents_t         *d,
+                                 const linux_dirent64_t *de,
+                                 const uint64_t          namelen,
+                                 const fuse_entry_t     *entry,
+                                 const struct stat      *st);
 
 void *fuse_dirents_find(fuse_dirents_t *d,
                         const uint64_t  ino);

libfuse/include/fuse_kernel.h

@@ -197,6 +197,20 @@
  *
  *  7.37
  *  - add FUSE_TMPFILE
+ *
+ *  7.38
+ *  - add FUSE_EXPIRE_ONLY flag to fuse_notify_inval_entry
+ *  - add FOPEN_PARALLEL_DIRECT_WRITES
+ *  - add total_extlen to fuse_in_header
+ *  - add FUSE_MAX_NR_SECCTX
+ *  - add extension header
+ *  - add FUSE_EXT_GROUPS
+ *  - add FUSE_CREATE_SUPP_GROUP
+ *  - add FUSE_HAS_EXPIRE_ONLY
+ *
+ *  7.39
+ *  - add FUSE_DIRECT_IO_ALLOW_MMAP
+ *  - add FUSE_STATX and related structures
  */
 
 #ifndef _LINUX_FUSE_H
@@ -232,7 +246,7 @@
 #define FUSE_KERNEL_VERSION 7
 
 /** Minor version number of this interface */
-#define FUSE_KERNEL_MINOR_VERSION 37
+#define FUSE_KERNEL_MINOR_VERSION 39
 
 /** The node ID of the root inode */
 #define FUSE_ROOT_ID 1
@@ -259,6 +273,40 @@ struct fuse_attr {
 	uint32_t	flags;
 };
 
+/*
+ * The following structures are bit-for-bit compatible with the statx(2) ABI in
+ * Linux.
+ */
+struct fuse_sx_time {
+	int64_t		tv_sec;
+	uint32_t	tv_nsec;
+	int32_t		__reserved;
+};
+
+struct fuse_statx {
+	uint32_t	mask;
+	uint32_t	blksize;
+	uint64_t	attributes;
+	uint32_t	nlink;
+	uint32_t	uid;
+	uint32_t	gid;
+	uint16_t	mode;
+	uint16_t	__spare0[1];
+	uint64_t	ino;
+	uint64_t	size;
+	uint64_t	blocks;
+	uint64_t	attributes_mask;
+	struct fuse_sx_time	atime;
+	struct fuse_sx_time	btime;
+	struct fuse_sx_time	ctime;
+	struct fuse_sx_time	mtime;
+	uint32_t	rdev_major;
+	uint32_t	rdev_minor;
+	uint32_t	dev_major;
+	uint32_t	dev_minor;
+	uint64_t	__spare2[14];
+};
+
 struct fuse_kstatfs {
 	uint64_t	blocks;
 	uint64_t	bfree;
@@ -282,18 +330,18 @@ struct fuse_file_lock {
 /**
  * Bitmasks for fuse_setattr_in.valid
  */
-#define FATTR_MODE         (1 << 0)
-#define FATTR_UID          (1 << 1)
-#define FATTR_GID          (1 << 2)
-#define FATTR_SIZE         (1 << 3)
-#define FATTR_ATIME        (1 << 4)
-#define FATTR_MTIME        (1 << 5)
-#define FATTR_FH           (1 << 6)
-#define FATTR_ATIME_NOW    (1 << 7)
-#define FATTR_MTIME_NOW    (1 << 8)
-#define FATTR_LOCKOWNER    (1 << 9)
-#define FATTR_CTIME        (1 << 10)
-#define FATTR_KILL_SUIDGID (1 << 11)
+#define FATTR_MODE	(1 << 0)
+#define FATTR_UID	(1 << 1)
+#define FATTR_GID	(1 << 2)
+#define FATTR_SIZE	(1 << 3)
+#define FATTR_ATIME	(1 << 4)
+#define FATTR_MTIME	(1 << 5)
+#define FATTR_FH	(1 << 6)
+#define FATTR_ATIME_NOW	(1 << 7)
+#define FATTR_MTIME_NOW	(1 << 8)
+#define FATTR_LOCKOWNER	(1 << 9)
+#define FATTR_CTIME	(1 << 10)
+#define FATTR_KILL_SUIDGID	(1 << 11)
 
 /**
  * Flags returned by the OPEN request
@@ -304,6 +352,7 @@ struct fuse_file_lock {
  * FOPEN_CACHE_DIR: allow caching this directory
  * FOPEN_STREAM: the file is stream-like (no file position at all)
  * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE)
+ * FOPEN_PARALLEL_DIRECT_WRITES: Allow concurrent direct writes on the same inode
  */
 #define FOPEN_DIRECT_IO		(1 << 0)
 #define FOPEN_KEEP_CACHE	(1 << 1)
@@ -311,6 +360,7 @@ struct fuse_file_lock {
 #define FOPEN_CACHE_DIR		(1 << 3)
 #define FOPEN_STREAM		(1 << 4)
 #define FOPEN_NOFLUSH		(1 << 5)
+#define FOPEN_PARALLEL_DIRECT_WRITES	(1 << 6)
 
 /**
  * INIT request/reply flags
@@ -356,6 +406,10 @@ struct fuse_file_lock {
  * FUSE_SECURITY_CTX:	add security context to create, mkdir, symlink, and
  *			mknod
  * FUSE_HAS_INODE_DAX:  use per inode DAX
+ * FUSE_CREATE_SUPP_GROUP: add supplementary group info to create, mkdir,
+ *			symlink and mknod (single group that matches parent)
+ * FUSE_HAS_EXPIRE_ONLY: kernel supports expiry-only entry invalidation
+ * FUSE_DIRECT_IO_ALLOW_MMAP: allow shared mmap in FOPEN_DIRECT_IO mode.
  */
 #define FUSE_ASYNC_READ		(1 << 0)
 #define FUSE_POSIX_LOCKS	(1 << 1)
@@ -392,6 +446,12 @@ struct fuse_file_lock {
 /* bits 32..63 get shifted down 32 bits into the flags2 field */
 #define FUSE_SECURITY_CTX	(1ULL << 32)
 #define FUSE_HAS_INODE_DAX	(1ULL << 33)
+#define FUSE_CREATE_SUPP_GROUP	(1ULL << 34)
+#define FUSE_HAS_EXPIRE_ONLY	(1ULL << 35)
+#define FUSE_DIRECT_IO_ALLOW_MMAP (1ULL << 36)
+
+/* Obsolete alias for FUSE_DIRECT_IO_ALLOW_MMAP */
+#define FUSE_DIRECT_IO_RELAX	FUSE_DIRECT_IO_ALLOW_MMAP
 
 /**
  * CUSE INIT request/reply flags
@@ -491,6 +551,23 @@ struct fuse_file_lock {
  */
 #define FUSE_SETXATTR_ACL_KILL_SGID	(1 << 0)
 
+/**
+ * notify_inval_entry flags
+ * FUSE_EXPIRE_ONLY
+ */
+#define FUSE_EXPIRE_ONLY		(1 << 0)
+
+/**
+ * extension type
+ * FUSE_MAX_NR_SECCTX: maximum value of &fuse_secctx_header.nr_secctx
+ * FUSE_EXT_GROUPS: &fuse_supp_groups extension
+ */
+enum fuse_ext_type {
+	/* Types 0..31 are reserved for fuse_secctx_header */
+	FUSE_MAX_NR_SECCTX	= 31,
+	FUSE_EXT_GROUPS		= 32,
+};
+
 enum fuse_opcode {
 	FUSE_LOOKUP		= 1,
 	FUSE_FORGET		= 2,  /* no reply */
@@ -541,6 +618,7 @@ enum fuse_opcode {
 	FUSE_REMOVEMAPPING	= 49,
 	FUSE_SYNCFS		= 50,
 	FUSE_TMPFILE		= 51,
+	FUSE_STATX		= 52,
 
 	/* CUSE specific operations */
 	CUSE_INIT		= 4096,
@@ -605,6 +683,22 @@ struct fuse_attr_out {
 	struct fuse_attr attr;
 };
 
+struct fuse_statx_in {
+	uint32_t	getattr_flags;
+	uint32_t	reserved;
+	uint64_t	fh;
+	uint32_t	sx_flags;
+	uint32_t	sx_mask;
+};
+
+struct fuse_statx_out {
+	uint64_t	attr_valid;	/* Cache timeout for the attributes */
+	uint32_t	attr_valid_nsec;
+	uint32_t	flags;
+	uint64_t	spare[2];
+	struct fuse_statx stat;
+};
+
 #define FUSE_COMPAT_MKNOD_IN_SIZE 8
 
 struct fuse_mknod_in {
@@ -874,7 +968,8 @@ struct fuse_in_header {
 	uint32_t	uid;
 	uint32_t	gid;
 	uint32_t	pid;
-	uint32_t	padding;
+	uint16_t	total_extlen; /* length of extensions in 8byte units */
+	uint16_t	padding;
 };
 
 struct fuse_out_header {
@@ -919,7 +1014,7 @@ struct fuse_notify_inval_inode_out {
 struct fuse_notify_inval_entry_out {
 	uint64_t	parent;
 	uint32_t	namelen;
-	uint32_t	padding;
+	uint32_t	flags;
 };
 
 struct fuse_notify_delete_out {
@@ -1035,4 +1130,27 @@ struct fuse_secctx_header {
 	uint32_t	nr_secctx;
 };
 
+/**
+ * struct fuse_ext_header - extension header
+ * @size: total size of this extension including this header
+ * @type: type of extension
+ *
+ * This is made compatible with fuse_secctx_header by using type values >
+ * FUSE_MAX_NR_SECCTX
+ */
+struct fuse_ext_header {
+	uint32_t	size;
+	uint32_t	type;
+};
+
+/**
+ * struct fuse_supp_groups - Supplementary group extension
+ * @nr_groups: number of supplementary groups
+ * @groups: flexible array of group IDs
+ */
+struct fuse_supp_groups {
+	uint32_t	nr_groups;
+	uint32_t	groups[];
+};
+
 #endif /* _LINUX_FUSE_H */

libfuse/include/fuse_lowlevel.h

@@ -1007,6 +1007,15 @@ struct fuse_lowlevel_ops
    */
   void (*copy_file_range)(fuse_req_t                   req,
                           const struct fuse_in_header *hdr);
+
+  void (*setupmapping)(fuse_req_t                   req,
+                       const struct fuse_in_header *hdr);
+  void (*removemapping)(fuse_req_t                   req,
+                        const struct fuse_in_header *hdr);
+  void (*syncfs)(fuse_req_t                   req,
+                 const struct fuse_in_header *hdr);
+  void (*tmpfile)(fuse_req_t                   req,
+                  const struct fuse_in_header *hdr);
 };
 
 /**
@@ -1460,6 +1469,7 @@ void fuse_session_process(struct fuse_session *se,
 int fuse_session_loop_mt(struct fuse_session *se,
                          const int            read_thread_count,
                          const int            process_thread_count,
+                         const int            process_thread_queue_depth,
                          const char          *pin_threads_type);
 
 /* ----------------------------------------------------------- *

libfuse/include/fuse_msgbuf.h

@@ -5,7 +5,6 @@
 typedef struct fuse_msgbuf_t fuse_msgbuf_t;
 struct fuse_msgbuf_t
 {
-  char     *mem;
   uint32_t  size;
-  uint32_t  used;
+  char     *mem;
 };

libfuse/include/linux_dirent64.h

@@ -1,8 +1,12 @@
 #pragma once
 
 #include <stdint.h>
+#include <string.h>
 
-struct linux_dirent64
+#define DIRENT_NAMELEN(X) (strlen((X)->name))
+
+typedef struct linux_dirent64_t linux_dirent64_t;
+struct linux_dirent64_t
 {
   uint64_t ino;
   int64_t  off;

libfuse/include/moodycamel/blockingconcurrentqueue.h

@@ -0,0 +1,582 @@
+// Provides an efficient blocking version of moodycamel::ConcurrentQueue.
+// ©2015-2020 Cameron Desrochers. Distributed under the terms of the simplified
+// BSD license, available at the top of concurrentqueue.h.
+// Also dual-licensed under the Boost Software License (see LICENSE.md)
+// Uses Jeff Preshing's semaphore implementation (under the terms of its
+// separate zlib license, see lightweightsemaphore.h).
+
+#pragma once
+
+#include "concurrentqueue.h"
+#include "lightweightsemaphore.h"
+
+#include <type_traits>
+#include <cerrno>
+#include <memory>
+#include <chrono>
+#include <ctime>
+
+namespace moodycamel
+{
+// This is a blocking version of the queue. It has an almost identical interface to
+// the normal non-blocking version, with the addition of various wait_dequeue() methods
+// and the removal of producer-specific dequeue methods.
+template<typename T, typename Traits = ConcurrentQueueDefaultTraits>
+class BlockingConcurrentQueue
+{
+private:
+	typedef ::moodycamel::ConcurrentQueue<T, Traits> ConcurrentQueue;
+	typedef ::moodycamel::LightweightSemaphore LightweightSemaphore;
+
+public:
+	typedef typename ConcurrentQueue::producer_token_t producer_token_t;
+	typedef typename ConcurrentQueue::consumer_token_t consumer_token_t;
+	
+	typedef typename ConcurrentQueue::index_t index_t;
+	typedef typename ConcurrentQueue::size_t size_t;
+	typedef typename std::make_signed<size_t>::type ssize_t;
+	
+	static const size_t BLOCK_SIZE = ConcurrentQueue::BLOCK_SIZE;
+	static const size_t EXPLICIT_BLOCK_EMPTY_COUNTER_THRESHOLD = ConcurrentQueue::EXPLICIT_BLOCK_EMPTY_COUNTER_THRESHOLD;
+	static const size_t EXPLICIT_INITIAL_INDEX_SIZE = ConcurrentQueue::EXPLICIT_INITIAL_INDEX_SIZE;
+	static const size_t IMPLICIT_INITIAL_INDEX_SIZE = ConcurrentQueue::IMPLICIT_INITIAL_INDEX_SIZE;
+	static const size_t INITIAL_IMPLICIT_PRODUCER_HASH_SIZE = ConcurrentQueue::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE;
+	static const std::uint32_t EXPLICIT_CONSUMER_CONSUMPTION_QUOTA_BEFORE_ROTATE = ConcurrentQueue::EXPLICIT_CONSUMER_CONSUMPTION_QUOTA_BEFORE_ROTATE;
+	static const size_t MAX_SUBQUEUE_SIZE = ConcurrentQueue::MAX_SUBQUEUE_SIZE;
+	
+public:
+	// Creates a queue with at least `capacity` element slots; note that the
+	// actual number of elements that can be inserted without additional memory
+	// allocation depends on the number of producers and the block size (e.g. if
+	// the block size is equal to `capacity`, only a single block will be allocated
+	// up-front, which means only a single producer will be able to enqueue elements
+	// without an extra allocation -- blocks aren't shared between producers).
+	// This method is not thread safe -- it is up to the user to ensure that the
+	// queue is fully constructed before it starts being used by other threads (this
+	// includes making the memory effects of construction visible, possibly with a
+	// memory barrier).
+	explicit BlockingConcurrentQueue(size_t capacity = 6 * BLOCK_SIZE)
+		: inner(capacity), sema(create<LightweightSemaphore, ssize_t, int>(0, (int)Traits::MAX_SEMA_SPINS), &BlockingConcurrentQueue::template destroy<LightweightSemaphore>)
+	{
+		assert(reinterpret_cast<ConcurrentQueue*>((BlockingConcurrentQueue*)1) == &((BlockingConcurrentQueue*)1)->inner && "BlockingConcurrentQueue must have ConcurrentQueue as its first member");
+		if (!sema) {
+			MOODYCAMEL_THROW(std::bad_alloc());
+		}
+	}
+	
+	BlockingConcurrentQueue(size_t minCapacity, size_t maxExplicitProducers, size_t maxImplicitProducers)
+		: inner(minCapacity, maxExplicitProducers, maxImplicitProducers), sema(create<LightweightSemaphore, ssize_t, int>(0, (int)Traits::MAX_SEMA_SPINS), &BlockingConcurrentQueue::template destroy<LightweightSemaphore>)
+	{
+		assert(reinterpret_cast<ConcurrentQueue*>((BlockingConcurrentQueue*)1) == &((BlockingConcurrentQueue*)1)->inner && "BlockingConcurrentQueue must have ConcurrentQueue as its first member");
+		if (!sema) {
+			MOODYCAMEL_THROW(std::bad_alloc());
+		}
+	}
+	
+	// Disable copying and copy assignment
+	BlockingConcurrentQueue(BlockingConcurrentQueue const&) MOODYCAMEL_DELETE_FUNCTION;
+	BlockingConcurrentQueue& operator=(BlockingConcurrentQueue const&) MOODYCAMEL_DELETE_FUNCTION;
+	
+	// Moving is supported, but note that it is *not* a thread-safe operation.
+	// Nobody can use the queue while it's being moved, and the memory effects
+	// of that move must be propagated to other threads before they can use it.
+	// Note: When a queue is moved, its tokens are still valid but can only be
+	// used with the destination queue (i.e. semantically they are moved along
+	// with the queue itself).
+	BlockingConcurrentQueue(BlockingConcurrentQueue&& other) MOODYCAMEL_NOEXCEPT
+		: inner(std::move(other.inner)), sema(std::move(other.sema))
+	{ }
+	
+	inline BlockingConcurrentQueue& operator=(BlockingConcurrentQueue&& other) MOODYCAMEL_NOEXCEPT
+	{
+		return swap_internal(other);
+	}
+	
+	// Swaps this queue's state with the other's. Not thread-safe.
+	// Swapping two queues does not invalidate their tokens, however
+	// the tokens that were created for one queue must be used with
+	// only the swapped queue (i.e. the tokens are tied to the
+	// queue's movable state, not the object itself).
+	inline void swap(BlockingConcurrentQueue& other) MOODYCAMEL_NOEXCEPT
+	{
+		swap_internal(other);
+	}
+	
+private:
+	BlockingConcurrentQueue& swap_internal(BlockingConcurrentQueue& other)
+	{
+		if (this == &other) {
+			return *this;
+		}
+		
+		inner.swap(other.inner);
+		sema.swap(other.sema);
+		return *this;
+	}
+	
+public:
+	// Enqueues a single item (by copying it).
+	// Allocates memory if required. Only fails if memory allocation fails (or implicit
+	// production is disabled because Traits::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE is 0,
+	// or Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
+	// Thread-safe.
+	inline bool enqueue(T const& item)
+	{
+		if ((details::likely)(inner.enqueue(item))) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by moving it, if possible).
+	// Allocates memory if required. Only fails if memory allocation fails (or implicit
+	// production is disabled because Traits::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE is 0,
+	// or Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
+	// Thread-safe.
+	inline bool enqueue(T&& item)
+	{
+		if ((details::likely)(inner.enqueue(std::move(item)))) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by copying it) using an explicit producer token.
+	// Allocates memory if required. Only fails if memory allocation fails (or
+	// Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
+	// Thread-safe.
+	inline bool enqueue(producer_token_t const& token, T const& item)
+	{
+		if ((details::likely)(inner.enqueue(token, item))) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by moving it, if possible) using an explicit producer token.
+	// Allocates memory if required. Only fails if memory allocation fails (or
+	// Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
+	// Thread-safe.
+	inline bool enqueue(producer_token_t const& token, T&& item)
+	{
+		if ((details::likely)(inner.enqueue(token, std::move(item)))) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues several items.
+	// Allocates memory if required. Only fails if memory allocation fails (or
+	// implicit production is disabled because Traits::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE
+	// is 0, or Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
+	// Note: Use std::make_move_iterator if the elements should be moved instead of copied.
+	// Thread-safe.
+	template<typename It>
+	inline bool enqueue_bulk(It itemFirst, size_t count)
+	{
+		if ((details::likely)(inner.enqueue_bulk(std::forward<It>(itemFirst), count))) {
+			sema->signal((LightweightSemaphore::ssize_t)(ssize_t)count);
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues several items using an explicit producer token.
+	// Allocates memory if required. Only fails if memory allocation fails
+	// (or Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
+	// Note: Use std::make_move_iterator if the elements should be moved
+	// instead of copied.
+	// Thread-safe.
+	template<typename It>
+	inline bool enqueue_bulk(producer_token_t const& token, It itemFirst, size_t count)
+	{
+		if ((details::likely)(inner.enqueue_bulk(token, std::forward<It>(itemFirst), count))) {
+			sema->signal((LightweightSemaphore::ssize_t)(ssize_t)count);
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by copying it).
+	// Does not allocate memory. Fails if not enough room to enqueue (or implicit
+	// production is disabled because Traits::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE
+	// is 0).
+	// Thread-safe.
+	inline bool try_enqueue(T const& item)
+	{
+		if (inner.try_enqueue(item)) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by moving it, if possible).
+	// Does not allocate memory (except for one-time implicit producer).
+	// Fails if not enough room to enqueue (or implicit production is
+	// disabled because Traits::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE is 0).
+	// Thread-safe.
+	inline bool try_enqueue(T&& item)
+	{
+		if (inner.try_enqueue(std::move(item))) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by copying it) using an explicit producer token.
+	// Does not allocate memory. Fails if not enough room to enqueue.
+	// Thread-safe.
+	inline bool try_enqueue(producer_token_t const& token, T const& item)
+	{
+		if (inner.try_enqueue(token, item)) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues a single item (by moving it, if possible) using an explicit producer token.
+	// Does not allocate memory. Fails if not enough room to enqueue.
+	// Thread-safe.
+	inline bool try_enqueue(producer_token_t const& token, T&& item)
+	{
+		if (inner.try_enqueue(token, std::move(item))) {
+			sema->signal();
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues several items.
+	// Does not allocate memory (except for one-time implicit producer).
+	// Fails if not enough room to enqueue (or implicit production is
+	// disabled because Traits::INITIAL_IMPLICIT_PRODUCER_HASH_SIZE is 0).
+	// Note: Use std::make_move_iterator if the elements should be moved
+	// instead of copied.
+	// Thread-safe.
+	template<typename It>
+	inline bool try_enqueue_bulk(It itemFirst, size_t count)
+	{
+		if (inner.try_enqueue_bulk(std::forward<It>(itemFirst), count)) {
+			sema->signal((LightweightSemaphore::ssize_t)(ssize_t)count);
+			return true;
+		}
+		return false;
+	}
+	
+	// Enqueues several items using an explicit producer token.
+	// Does not allocate memory. Fails if not enough room to enqueue.
+	// Note: Use std::make_move_iterator if the elements should be moved
+	// instead of copied.
+	// Thread-safe.
+	template<typename It>
+	inline bool try_enqueue_bulk(producer_token_t const& token, It itemFirst, size_t count)
+	{
+		if (inner.try_enqueue_bulk(token, std::forward<It>(itemFirst), count)) {
+			sema->signal((LightweightSemaphore::ssize_t)(ssize_t)count);
+			return true;
+		}
+		return false;
+	}
+	
+	
+	// Attempts to dequeue from the queue.
+	// Returns false if all producer streams appeared empty at the time they
+	// were checked (so, the queue is likely but not guaranteed to be empty).
+	// Never allocates. Thread-safe.
+	template<typename U>
+	inline bool try_dequeue(U& item)
+	{
+		if (sema->tryWait()) {
+			while (!inner.try_dequeue(item)) {
+				continue;
+			}
+			return true;
+		}
+		return false;
+	}
+	
+	// Attempts to dequeue from the queue using an explicit consumer token.
+	// Returns false if all producer streams appeared empty at the time they
+	// were checked (so, the queue is likely but not guaranteed to be empty).
+	// Never allocates. Thread-safe.
+	template<typename U>
+	inline bool try_dequeue(consumer_token_t& token, U& item)
+	{
+		if (sema->tryWait()) {
+			while (!inner.try_dequeue(token, item)) {
+				continue;
+			}
+			return true;
+		}
+		return false;
+	}
+	
+	// Attempts to dequeue several elements from the queue.
+	// Returns the number of items actually dequeued.
+	// Returns 0 if all producer streams appeared empty at the time they
+	// were checked (so, the queue is likely but not guaranteed to be empty).
+	// Never allocates. Thread-safe.
+	template<typename It>
+	inline size_t try_dequeue_bulk(It itemFirst, size_t max)
+	{
+		size_t count = 0;
+		max = (size_t)sema->tryWaitMany((LightweightSemaphore::ssize_t)(ssize_t)max);
+		while (count != max) {
+			count += inner.template try_dequeue_bulk<It&>(itemFirst, max - count);
+		}
+		return count;
+	}
+	
+	// Attempts to dequeue several elements from the queue using an explicit consumer token.
+	// Returns the number of items actually dequeued.
+	// Returns 0 if all producer streams appeared empty at the time they
+	// were checked (so, the queue is likely but not guaranteed to be empty).
+	// Never allocates. Thread-safe.
+	template<typename It>
+	inline size_t try_dequeue_bulk(consumer_token_t& token, It itemFirst, size_t max)
+	{
+		size_t count = 0;
+		max = (size_t)sema->tryWaitMany((LightweightSemaphore::ssize_t)(ssize_t)max);
+		while (count != max) {
+			count += inner.template try_dequeue_bulk<It&>(token, itemFirst, max - count);
+		}
+		return count;
+	}
+	
+	
+	
+	// Blocks the current thread until there's something to dequeue, then
+	// dequeues it.
+	// Never allocates. Thread-safe.
+	template<typename U>
+	inline void wait_dequeue(U& item)
+	{
+		while (!sema->wait()) {
+			continue;
+		}
+		while (!inner.try_dequeue(item)) {
+			continue;
+		}
+	}
+
+	// Blocks the current thread until either there's something to dequeue
+	// or the timeout (specified in microseconds) expires. Returns false
+	// without setting `item` if the timeout expires, otherwise assigns
+	// to `item` and returns true.
+	// Using a negative timeout indicates an indefinite timeout,
+	// and is thus functionally equivalent to calling wait_dequeue.
+	// Never allocates. Thread-safe.
+	template<typename U>
+	inline bool wait_dequeue_timed(U& item, std::int64_t timeout_usecs)
+	{
+		if (!sema->wait(timeout_usecs)) {
+			return false;
+		}
+		while (!inner.try_dequeue(item)) {
+			continue;
+		}
+		return true;
+	}
+    
+    // Blocks the current thread until either there's something to dequeue
+	// or the timeout expires. Returns false without setting `item` if the
+    // timeout expires, otherwise assigns to `item` and returns true.
+	// Never allocates. Thread-safe.
+	template<typename U, typename Rep, typename Period>
+	inline bool wait_dequeue_timed(U& item, std::chrono::duration<Rep, Period> const& timeout)
+    {
+        return wait_dequeue_timed(item, std::chrono::duration_cast<std::chrono::microseconds>(timeout).count());
+    }
+	
+	// Blocks the current thread until there's something to dequeue, then
+	// dequeues it using an explicit consumer token.
+	// Never allocates. Thread-safe.
+	template<typename U>
+	inline void wait_dequeue(consumer_token_t& token, U& item)
+	{
+		while (!sema->wait()) {
+			continue;
+		}
+		while (!inner.try_dequeue(token, item)) {
+			continue;
+		}
+	}
+	
+	// Blocks the current thread until either there's something to dequeue
+	// or the timeout (specified in microseconds) expires. Returns false
+	// without setting `item` if the timeout expires, otherwise assigns
+	// to `item` and returns true.
+	// Using a negative timeout indicates an indefinite timeout,
+	// and is thus functionally equivalent to calling wait_dequeue.
+	// Never allocates. Thread-safe.
+	template<typename U>
+	inline bool wait_dequeue_timed(consumer_token_t& token, U& item, std::int64_t timeout_usecs)
+	{
+		if (!sema->wait(timeout_usecs)) {
+			return false;
+		}
+		while (!inner.try_dequeue(token, item)) {
+			continue;
+		}
+		return true;
+	}
+    
+    // Blocks the current thread until either there's something to dequeue
+	// or the timeout expires. Returns false without setting `item` if the
+    // timeout expires, otherwise assigns to `item` and returns true.
+	// Never allocates. Thread-safe.
+	template<typename U, typename Rep, typename Period>
+	inline bool wait_dequeue_timed(consumer_token_t& token, U& item, std::chrono::duration<Rep, Period> const& timeout)
+    {
+        return wait_dequeue_timed(token, item, std::chrono::duration_cast<std::chrono::microseconds>(timeout).count());
+    }
+	
+	// Attempts to dequeue several elements from the queue.
+	// Returns the number of items actually dequeued, which will
+	// always be at least one (this method blocks until the queue
+	// is non-empty) and at most max.
+	// Never allocates. Thread-safe.
+	template<typename It>
+	inline size_t wait_dequeue_bulk(It itemFirst, size_t max)
+	{
+		size_t count = 0;
+		max = (size_t)sema->waitMany((LightweightSemaphore::ssize_t)(ssize_t)max);
+		while (count != max) {
+			count += inner.template try_dequeue_bulk<It&>(itemFirst, max - count);
+		}
+		return count;
+	}
+	
+	// Attempts to dequeue several elements from the queue.
+	// Returns the number of items actually dequeued, which can
+	// be 0 if the timeout expires while waiting for elements,
+	// and at most max.
+	// Using a negative timeout indicates an indefinite timeout,
+	// and is thus functionally equivalent to calling wait_dequeue_bulk.
+	// Never allocates. Thread-safe.
+	template<typename It>
+	inline size_t wait_dequeue_bulk_timed(It itemFirst, size_t max, std::int64_t timeout_usecs)
+	{
+		size_t count = 0;
+		max = (size_t)sema->waitMany((LightweightSemaphore::ssize_t)(ssize_t)max, timeout_usecs);
+		while (count != max) {
+			count += inner.template try_dequeue_bulk<It&>(itemFirst, max - count);
+		}
+		return count;
+	}
+    
+    // Attempts to dequeue several elements from the queue.
+	// Returns the number of items actually dequeued, which can
+	// be 0 if the timeout expires while waiting for elements,
+	// and at most max.
+	// Never allocates. Thread-safe.
+	template<typename It, typename Rep, typename Period>
+	inline size_t wait_dequeue_bulk_timed(It itemFirst, size_t max, std::chrono::duration<Rep, Period> const& timeout)
+    {
+        return wait_dequeue_bulk_timed<It&>(itemFirst, max, std::chrono::duration_cast<std::chrono::microseconds>(timeout).count());
+    }
+	
+	// Attempts to dequeue several elements from the queue using an explicit consumer token.
+	// Returns the number of items actually dequeued, which will
+	// always be at least one (this method blocks until the queue
+	// is non-empty) and at most max.
+	// Never allocates. Thread-safe.
+	template<typename It>
+	inline size_t wait_dequeue_bulk(consumer_token_t& token, It itemFirst, size_t max)
+	{
+		size_t count = 0;
+		max = (size_t)sema->waitMany((LightweightSemaphore::ssize_t)(ssize_t)max);
+		while (count != max) {
+			count += inner.template try_dequeue_bulk<It&>(token, itemFirst, max - count);
+		}
+		return count;
+	}
+	
+	// Attempts to dequeue several elements from the queue using an explicit consumer token.
+	// Returns the number of items actually dequeued, which can
+	// be 0 if the timeout expires while waiting for elements,
+	// and at most max.
+	// Using a negative timeout indicates an indefinite timeout,
+	// and is thus functionally equivalent to calling wait_dequeue_bulk.
+	// Never allocates. Thread-safe.
+	template<typename It>
+	inline size_t wait_dequeue_bulk_timed(consumer_token_t& token, It itemFirst, size_t max, std::int64_t timeout_usecs)
+	{
+		size_t count = 0;
+		max = (size_t)sema->waitMany((LightweightSemaphore::ssize_t)(ssize_t)max, timeout_usecs);
+		while (count != max) {
+			count += inner.template try_dequeue_bulk<It&>(token, itemFirst, max - count);
+		}
+		return count;
+	}
+	
+	// Attempts to dequeue several elements from the queue using an explicit consumer token.
+	// Returns the number of items actually dequeued, which can
+	// be 0 if the timeout expires while waiting for elements,
+	// and at most max.
+	// Never allocates. Thread-safe.
+	template<typename It, typename Rep, typename Period>
+	inline size_t wait_dequeue_bulk_timed(consumer_token_t& token, It itemFirst, size_t max, std::chrono::duration<Rep, Period> const& timeout)
+    {
+        return wait_dequeue_bulk_timed<It&>(token, itemFirst, max, std::chrono::duration_cast<std::chrono::microseconds>(timeout).count());
+    }
+	
+	
+	// Returns an estimate of the total number of elements currently in the queue. This
+	// estimate is only accurate if the queue has completely stabilized before it is called
+	// (i.e. all enqueue and dequeue operations have completed and their memory effects are
+	// visible on the calling thread, and no further operations start while this method is
+	// being called).
+	// Thread-safe.
+	inline size_t size_approx() const
+	{
+		return (size_t)sema->availableApprox();
+	}
+	
+	
+	// Returns true if the underlying atomic variables used by
+	// the queue are lock-free (they should be on most platforms).
+	// Thread-safe.
+	static constexpr bool is_lock_free()
+	{
+		return ConcurrentQueue::is_lock_free();
+	}
+	
+
+private:
+	template<typename U, typename A1, typename A2>
+	static inline U* create(A1&& a1, A2&& a2)
+	{
+		void* p = (Traits::malloc)(sizeof(U));
+		return p != nullptr ? new (p) U(std::forward<A1>(a1), std::forward<A2>(a2)) : nullptr;
+	}
+	
+	template<typename U>
+	static inline void destroy(U* p)
+	{
+		if (p != nullptr) {
+			p->~U();
+		}
+		(Traits::free)(p);
+	}
+	
+private:
+	ConcurrentQueue inner;
+	std::unique_ptr<LightweightSemaphore, void (*)(LightweightSemaphore*)> sema;
+};
+
+
+template<typename T, typename Traits>
+inline void swap(BlockingConcurrentQueue<T, Traits>& a, BlockingConcurrentQueue<T, Traits>& b) MOODYCAMEL_NOEXCEPT
+{
+	a.swap(b);
+}
+
+}	// end namespace moodycamel

libfuse/include/moodycamel/lightweightsemaphore.h

@@ -0,0 +1,427 @@
+// Provides an efficient implementation of a semaphore (LightweightSemaphore).
+// This is an extension of Jeff Preshing's sempahore implementation (licensed 
+// under the terms of its separate zlib license) that has been adapted and
+// extended by Cameron Desrochers.
+
+#pragma once
+
+#include <cstddef> // For std::size_t
+#include <atomic>
+#include <type_traits> // For std::make_signed<T>
+
+#if defined(_WIN32)
+// Avoid including windows.h in a header; we only need a handful of
+// items, so we'll redeclare them here (this is relatively safe since
+// the API generally has to remain stable between Windows versions).
+// I know this is an ugly hack but it still beats polluting the global
+// namespace with thousands of generic names or adding a .cpp for nothing.
+extern "C" {
+	struct _SECURITY_ATTRIBUTES;
+	__declspec(dllimport) void* __stdcall CreateSemaphoreW(_SECURITY_ATTRIBUTES* lpSemaphoreAttributes, long lInitialCount, long lMaximumCount, const wchar_t* lpName);
+	__declspec(dllimport) int __stdcall CloseHandle(void* hObject);
+	__declspec(dllimport) unsigned long __stdcall WaitForSingleObject(void* hHandle, unsigned long dwMilliseconds);
+	__declspec(dllimport) int __stdcall ReleaseSemaphore(void* hSemaphore, long lReleaseCount, long* lpPreviousCount);
+}
+#elif defined(__MACH__)
+#include <mach/mach.h>
+#elif defined(__MVS__)
+#include <zos-semaphore.h>
+#elif defined(__unix__)
+#include <semaphore.h>
+
+#if defined(__GLIBC_PREREQ) && defined(_GNU_SOURCE)
+#if __GLIBC_PREREQ(2,30)
+#define MOODYCAMEL_LIGHTWEIGHTSEMAPHORE_MONOTONIC
+#endif
+#endif
+#endif
+
+namespace moodycamel
+{
+namespace details
+{
+
+// Code in the mpmc_sema namespace below is an adaptation of Jeff Preshing's
+// portable + lightweight semaphore implementations, originally from
+// https://github.com/preshing/cpp11-on-multicore/blob/master/common/sema.h
+// LICENSE:
+// Copyright (c) 2015 Jeff Preshing
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//	claim that you wrote the original software. If you use this software
+//	in a product, an acknowledgement in the product documentation would be
+//	appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//	misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+#if defined(_WIN32)
+class Semaphore
+{
+private:
+	void* m_hSema;
+	
+	Semaphore(const Semaphore& other) MOODYCAMEL_DELETE_FUNCTION;
+	Semaphore& operator=(const Semaphore& other) MOODYCAMEL_DELETE_FUNCTION;
+
+public:
+	Semaphore(int initialCount = 0)
+	{
+		assert(initialCount >= 0);
+		const long maxLong = 0x7fffffff;
+		m_hSema = CreateSemaphoreW(nullptr, initialCount, maxLong, nullptr);
+		assert(m_hSema);
+	}
+
+	~Semaphore()
+	{
+		CloseHandle(m_hSema);
+	}
+
+	bool wait()
+	{
+		const unsigned long infinite = 0xffffffff;
+		return WaitForSingleObject(m_hSema, infinite) == 0;
+	}
+	
+	bool try_wait()
+	{
+		return WaitForSingleObject(m_hSema, 0) == 0;
+	}
+	
+	bool timed_wait(std::uint64_t usecs)
+	{
+		return WaitForSingleObject(m_hSema, (unsigned long)(usecs / 1000)) == 0;
+	}
+
+	void signal(int count = 1)
+	{
+		while (!ReleaseSemaphore(m_hSema, count, nullptr));
+	}
+};
+#elif defined(__MACH__)
+//---------------------------------------------------------
+// Semaphore (Apple iOS and OSX)
+// Can't use POSIX semaphores due to http://lists.apple.com/archives/darwin-kernel/2009/Apr/msg00010.html
+//---------------------------------------------------------
+class Semaphore
+{
+private:
+	semaphore_t m_sema;
+
+	Semaphore(const Semaphore& other) MOODYCAMEL_DELETE_FUNCTION;
+	Semaphore& operator=(const Semaphore& other) MOODYCAMEL_DELETE_FUNCTION;
+
+public:
+	Semaphore(int initialCount = 0)
+	{
+		assert(initialCount >= 0);
+		kern_return_t rc = semaphore_create(mach_task_self(), &m_sema, SYNC_POLICY_FIFO, initialCount);
+		assert(rc == KERN_SUCCESS);
+		(void)rc;
+	}
+
+	~Semaphore()
+	{
+		semaphore_destroy(mach_task_self(), m_sema);
+	}
+
+	bool wait()
+	{
+		return semaphore_wait(m_sema) == KERN_SUCCESS;
+	}
+	
+	bool try_wait()
+	{
+		return timed_wait(0);
+	}
+	
+	bool timed_wait(std::uint64_t timeout_usecs)
+	{
+		mach_timespec_t ts;
+		ts.tv_sec = static_cast<unsigned int>(timeout_usecs / 1000000);
+		ts.tv_nsec = static_cast<int>((timeout_usecs % 1000000) * 1000);
+
+		// added in OSX 10.10: https://developer.apple.com/library/prerelease/mac/documentation/General/Reference/APIDiffsMacOSX10_10SeedDiff/modules/Darwin.html
+		kern_return_t rc = semaphore_timedwait(m_sema, ts);
+		return rc == KERN_SUCCESS;
+	}
+
+	void signal()
+	{
+		while (semaphore_signal(m_sema) != KERN_SUCCESS);
+	}
+
+	void signal(int count)
+	{
+		while (count-- > 0)
+		{
+			while (semaphore_signal(m_sema) != KERN_SUCCESS);
+		}
+	}
+};
+#elif defined(__unix__) || defined(__MVS__)
+//---------------------------------------------------------
+// Semaphore (POSIX, Linux, zOS)
+//---------------------------------------------------------
+class Semaphore
+{
+private:
+	sem_t m_sema;
+
+	Semaphore(const Semaphore& other) MOODYCAMEL_DELETE_FUNCTION;
+	Semaphore& operator=(const Semaphore& other) MOODYCAMEL_DELETE_FUNCTION;
+
+public:
+	Semaphore(int initialCount = 0)
+	{
+		assert(initialCount >= 0);
+		int rc = sem_init(&m_sema, 0, static_cast<unsigned int>(initialCount));
+		assert(rc == 0);
+		(void)rc;
+	}
+
+	~Semaphore()
+	{
+		sem_destroy(&m_sema);
+	}
+
+	bool wait()
+	{
+		// http://stackoverflow.com/questions/2013181/gdb-causes-sem-wait-to-fail-with-eintr-error
+		int rc;
+		do {
+			rc = sem_wait(&m_sema);
+		} while (rc == -1 && errno == EINTR);
+		return rc == 0;
+	}
+
+	bool try_wait()
+	{
+		int rc;
+		do {
+			rc = sem_trywait(&m_sema);
+		} while (rc == -1 && errno == EINTR);
+		return rc == 0;
+	}
+
+	bool timed_wait(std::uint64_t usecs)
+	{
+		struct timespec ts;
+		const int usecs_in_1_sec = 1000000;
+		const int nsecs_in_1_sec = 1000000000;
+#ifdef MOODYCAMEL_LIGHTWEIGHTSEMAPHORE_MONOTONIC
+		clock_gettime(CLOCK_MONOTONIC, &ts);
+#else
+		clock_gettime(CLOCK_REALTIME, &ts);
+#endif
+		ts.tv_sec += (time_t)(usecs / usecs_in_1_sec);
+		ts.tv_nsec += (long)(usecs % usecs_in_1_sec) * 1000;
+		// sem_timedwait bombs if you have more than 1e9 in tv_nsec
+		// so we have to clean things up before passing it in
+		if (ts.tv_nsec >= nsecs_in_1_sec) {
+			ts.tv_nsec -= nsecs_in_1_sec;
+			++ts.tv_sec;
+		}
+
+		int rc;
+		do {
+#ifdef MOODYCAMEL_LIGHTWEIGHTSEMAPHORE_MONOTONIC
+			rc = sem_clockwait(&m_sema, CLOCK_MONOTONIC, &ts);
+#else
+			rc = sem_timedwait(&m_sema, &ts);
+#endif
+		} while (rc == -1 && errno == EINTR);
+		return rc == 0;
+	}
+
+	void signal()
+	{
+		while (sem_post(&m_sema) == -1);
+	}
+
+	void signal(int count)
+	{
+		while (count-- > 0)
+		{
+			while (sem_post(&m_sema) == -1);
+		}
+	}
+};
+#else
+#error Unsupported platform! (No semaphore wrapper available)
+#endif
+
+}	// end namespace details
+
+
+//---------------------------------------------------------
+// LightweightSemaphore
+//---------------------------------------------------------
+class LightweightSemaphore
+{
+public:
+	typedef std::make_signed<std::size_t>::type ssize_t;
+
+private:
+	std::atomic<ssize_t> m_count;
+	details::Semaphore m_sema;
+	int m_maxSpins;
+
+	bool waitWithPartialSpinning(std::int64_t timeout_usecs = -1)
+	{
+		ssize_t oldCount;
+		int spin = m_maxSpins;
+		while (--spin >= 0)
+		{
+			oldCount = m_count.load(std::memory_order_relaxed);
+			if ((oldCount > 0) && m_count.compare_exchange_strong(oldCount, oldCount - 1, std::memory_order_acquire, std::memory_order_relaxed))
+				return true;
+			std::atomic_signal_fence(std::memory_order_acquire);	 // Prevent the compiler from collapsing the loop.
+		}
+		oldCount = m_count.fetch_sub(1, std::memory_order_acquire);
+		if (oldCount > 0)
+			return true;
+		if (timeout_usecs < 0)
+		{
+			if (m_sema.wait())
+				return true;
+		}
+		if (timeout_usecs > 0 && m_sema.timed_wait((std::uint64_t)timeout_usecs))
+			return true;
+		// At this point, we've timed out waiting for the semaphore, but the
+		// count is still decremented indicating we may still be waiting on
+		// it. So we have to re-adjust the count, but only if the semaphore
+		// wasn't signaled enough times for us too since then. If it was, we
+		// need to release the semaphore too.
+		while (true)
+		{
+			oldCount = m_count.load(std::memory_order_acquire);
+			if (oldCount >= 0 && m_sema.try_wait())
+				return true;
+			if (oldCount < 0 && m_count.compare_exchange_strong(oldCount, oldCount + 1, std::memory_order_relaxed, std::memory_order_relaxed))
+				return false;
+		}
+	}
+
+	ssize_t waitManyWithPartialSpinning(ssize_t max, std::int64_t timeout_usecs = -1)
+	{
+		assert(max > 0);
+		ssize_t oldCount;
+		int spin = m_maxSpins;
+		while (--spin >= 0)
+		{
+			oldCount = m_count.load(std::memory_order_relaxed);
+			if (oldCount > 0)
+			{
+				ssize_t newCount = oldCount > max ? oldCount - max : 0;
+				if (m_count.compare_exchange_strong(oldCount, newCount, std::memory_order_acquire, std::memory_order_relaxed))
+					return oldCount - newCount;
+			}
+			std::atomic_signal_fence(std::memory_order_acquire);
+		}
+		oldCount = m_count.fetch_sub(1, std::memory_order_acquire);
+		if (oldCount <= 0)
+		{
+			if ((timeout_usecs == 0) || (timeout_usecs < 0 && !m_sema.wait()) || (timeout_usecs > 0 && !m_sema.timed_wait((std::uint64_t)timeout_usecs)))
+			{
+				while (true)
+				{
+					oldCount = m_count.load(std::memory_order_acquire);
+					if (oldCount >= 0 && m_sema.try_wait())
+						break;
+					if (oldCount < 0 && m_count.compare_exchange_strong(oldCount, oldCount + 1, std::memory_order_relaxed, std::memory_order_relaxed))
+						return 0;
+				}
+			}
+		}
+		if (max > 1)
+			return 1 + tryWaitMany(max - 1);
+		return 1;
+	}
+
+public:
+	LightweightSemaphore(ssize_t initialCount = 0, int maxSpins = 10000) : m_count(initialCount), m_maxSpins(maxSpins)
+	{
+		assert(initialCount >= 0);
+		assert(maxSpins >= 0);
+	}
+
+	bool tryWait()
+	{
+		ssize_t oldCount = m_count.load(std::memory_order_relaxed);
+		while (oldCount > 0)
+		{
+			if (m_count.compare_exchange_weak(oldCount, oldCount - 1, std::memory_order_acquire, std::memory_order_relaxed))
+				return true;
+		}
+		return false;
+	}
+
+	bool wait()
+	{
+		return tryWait() || waitWithPartialSpinning();
+	}
+
+	bool wait(std::int64_t timeout_usecs)
+	{
+		return tryWait() || waitWithPartialSpinning(timeout_usecs);
+	}
+
+	// Acquires between 0 and (greedily) max, inclusive
+	ssize_t tryWaitMany(ssize_t max)
+	{
+		assert(max >= 0);
+		ssize_t oldCount = m_count.load(std::memory_order_relaxed);
+		while (oldCount > 0)
+		{
+			ssize_t newCount = oldCount > max ? oldCount - max : 0;
+			if (m_count.compare_exchange_weak(oldCount, newCount, std::memory_order_acquire, std::memory_order_relaxed))
+				return oldCount - newCount;
+		}
+		return 0;
+	}
+
+	// Acquires at least one, and (greedily) at most max
+	ssize_t waitMany(ssize_t max, std::int64_t timeout_usecs)
+	{
+		assert(max >= 0);
+		ssize_t result = tryWaitMany(max);
+		if (result == 0 && max > 0)
+			result = waitManyWithPartialSpinning(max, timeout_usecs);
+		return result;
+	}
+	
+	ssize_t waitMany(ssize_t max)
+	{
+		ssize_t result = waitMany(max, -1);
+		assert(result > 0);
+		return result;
+	}
+
+	void signal(ssize_t count = 1)
+	{
+		assert(count >= 0);
+		ssize_t oldCount = m_count.fetch_add(count, std::memory_order_release);
+		ssize_t toRelease = -oldCount < count ? -oldCount : count;
+		if (toRelease > 0)
+		{
+			m_sema.signal((int)toRelease);
+		}
+	}
+	
+	std::size_t availableApprox() const
+	{
+		ssize_t count = m_count.load(std::memory_order_relaxed);
+		return count > 0 ? static_cast<std::size_t>(count) : 0;
+	}
+};
+
+}   // end namespace moodycamel

libfuse/include/thread_pool.hpp

@@ -0,0 +1,318 @@
+#pragma once
+
+#include "moodycamel/blockingconcurrentqueue.h"
+
+#include <algorithm>
+#include <atomic>
+#include <csignal>
+#include <cstring>
+#include <future>
+#include <memory>
+#include <mutex>
+#include <stdexcept>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include <syslog.h>
+
+
+struct ThreadPoolTraits : public moodycamel::ConcurrentQueueDefaultTraits
+{
+  static const int MAX_SEMA_SPINS = 1;
+};
+
+
+class ThreadPool
+{
+private:
+  using Func  = std::function<void(void)>;
+  using Queue = moodycamel::BlockingConcurrentQueue<Func,ThreadPoolTraits>;
+
+public:
+  explicit
+  ThreadPool(unsigned const thread_count_    = std::thread::hardware_concurrency(),
+             unsigned const max_queue_depth_ = std::thread::hardware_concurrency(),
+             std::string const name_         = {})
+    : _queue(),
+      _queue_depth(0),
+      _max_queue_depth(std::max(thread_count_,max_queue_depth_)),
+      _name(name_)
+  {
+    syslog(LOG_DEBUG,
+           "threadpool (%s): spawning %u threads w/ max queue depth %u%s",
+           _name.c_str(),
+           thread_count_,
+           _max_queue_depth,
+           ((_max_queue_depth != max_queue_depth_) ? " (adjusted)" : ""));
+
+    sigset_t oldset;
+    sigset_t newset;
+
+    sigfillset(&newset);
+    pthread_sigmask(SIG_BLOCK,&newset,&oldset);
+
+    _threads.reserve(thread_count_);
+    for(std::size_t i = 0; i < thread_count_; ++i)
+      {
+        int rv;
+        pthread_t t;
+
+        rv = pthread_create(&t,NULL,ThreadPool::start_routine,this);
+        if(rv != 0)
+          {
+            syslog(LOG_WARNING,
+                   "threadpool (%s): error spawning thread - %d (%s)",
+                   _name.c_str(),
+                   rv,
+                   strerror(rv));
+            continue;
+          }
+
+        if(!_name.empty())
+          pthread_setname_np(t,_name.c_str());
+
+        _threads.push_back(t);
+      }
+
+    pthread_sigmask(SIG_SETMASK,&oldset,NULL);
+
+    if(_threads.empty())
+      throw std::runtime_error("threadpool: failed to spawn any threads");
+  }
+
+  ~ThreadPool()
+  {
+    syslog(LOG_DEBUG,
+           "threadpool (%s): destroying %lu threads",
+           _name.c_str(),
+           _threads.size());
+
+    auto func = []() { pthread_exit(NULL); };
+    for(std::size_t i = 0; i < _threads.size(); i++)
+      _queue.enqueue(func);
+
+    for(auto t : _threads)
+      pthread_cancel(t);
+
+    for(auto t : _threads)
+      pthread_join(t,NULL);
+  }
+
+private:
+  static
+  void*
+  start_routine(void *arg_)
+  {
+    ThreadPool *btp = static_cast<ThreadPool*>(arg_);
+    ThreadPool::Func func;
+    ThreadPool::Queue &q = btp->_queue;
+    std::atomic<unsigned> &queue_depth = btp->_queue_depth;
+    moodycamel::ConsumerToken ctok(btp->_queue);
+
+    while(true)
+      {
+        q.wait_dequeue(ctok,func);
+
+        func();
+
+        queue_depth.fetch_sub(1,std::memory_order_release);
+      }
+
+    return NULL;
+  }
+
+public:
+  int
+  add_thread(std::string const name_ = {})
+  {
+    int rv;
+    pthread_t t;
+    sigset_t oldset;
+    sigset_t newset;
+    std::string name;
+
+    name = (name_.empty() ? _name : name_);
+
+    sigfillset(&newset);
+    pthread_sigmask(SIG_BLOCK,&newset,&oldset);
+    rv = pthread_create(&t,NULL,ThreadPool::start_routine,this);
+    pthread_sigmask(SIG_SETMASK,&oldset,NULL);
+
+    if(rv != 0)
+      {
+        syslog(LOG_WARNING,
+               "threadpool (%s): error spawning thread - %d (%s)",
+               _name.c_str(),
+               rv,
+               strerror(rv));
+        return -rv;
+      }
+
+    if(!name.empty())
+      pthread_setname_np(t,name.c_str());
+
+    {
+      std::lock_guard<std::mutex> lg(_threads_mutex);
+      _threads.push_back(t);
+    }
+
+    syslog(LOG_DEBUG,
+           "threadpool (%s): 1 thread added named '%s'",
+           _name.c_str(),
+           name.c_str());
+
+    return 0;
+  }
+
+  int
+  remove_thread(void)
+  {
+    {
+      std::lock_guard<std::mutex> lg(_threads_mutex);
+      if(_threads.size() <= 1)
+        return -EINVAL;
+    }
+
+    std::promise<pthread_t> promise;
+    auto func = [&]()
+    {
+      pthread_t t;
+
+      t = pthread_self();
+      promise.set_value(t);
+
+      {
+        std::lock_guard<std::mutex> lg(_threads_mutex);
+
+        for(auto i = _threads.begin(); i != _threads.end(); ++i)
+          {
+            if(*i != t)
+              continue;
+
+            _threads.erase(i);
+            break;
+          }
+      }
+
+      syslog(LOG_DEBUG,
+             "threadpool (%s): 1 thread removed",
+             _name.c_str());
+
+      pthread_exit(NULL);
+    };
+
+    enqueue_work(func);
+    pthread_join(promise.get_future().get(),NULL);
+
+    return 0;
+  }
+
+  int
+  set_threads(std::size_t const count_)
+  {
+    int diff;
+    {
+      std::lock_guard<std::mutex> lg(_threads_mutex);
+
+      diff = ((int)count_ - (int)_threads.size());
+    }
+
+    for(auto i = diff; i > 0; --i)
+      add_thread();
+    for(auto i = diff; i < 0; ++i)
+      remove_thread();
+
+    return diff;
+  }
+
+public:
+  template<typename FuncType>
+  void
+  enqueue_work(moodycamel::ProducerToken  &ptok_,
+               FuncType                  &&f_)
+  {
+    timespec ts = {0,1000};
+    for(unsigned i = 0; i < 1000000; i++)
+      {
+        if(_queue_depth.load(std::memory_order_acquire) < _max_queue_depth)
+          break;
+        ::nanosleep(&ts,NULL);
+      }
+
+    _queue.enqueue(ptok_,f_);
+    _queue_depth.fetch_add(1,std::memory_order_release);
+  }
+
+  template<typename FuncType>
+  void
+  enqueue_work(FuncType &&f_)
+  {
+    timespec ts = {0,1000};
+    for(unsigned i = 0; i < 1000000; i++)
+      {
+        if(_queue_depth.load(std::memory_order_acquire) < _max_queue_depth)
+          break;
+        ::nanosleep(&ts,NULL);
+      }
+
+    _queue.enqueue(f_);
+    _queue_depth.fetch_add(1,std::memory_order_release);
+  }
+
+  template<typename FuncType>
+  [[nodiscard]]
+  std::future<typename std::result_of<FuncType()>::type>
+  enqueue_task(FuncType&& f_)
+  {
+    using TaskReturnType = typename std::result_of<FuncType()>::type;
+    using Promise        = std::promise<TaskReturnType>;
+
+    auto promise = std::make_shared<Promise>();
+    auto future  = promise->get_future();
+
+    auto work = [=]()
+    {
+      auto rv = f_();
+      promise->set_value(rv);
+    };
+
+    timespec ts = {0,1000};
+    for(unsigned i = 0; i < 1000000; i++)
+      {
+        if(_queue_depth.load(std::memory_order_acquire) < _max_queue_depth)
+          break;
+        ::nanosleep(&ts,NULL);
+      }
+
+    _queue.enqueue(work);
+    _queue_depth.fetch_add(1,std::memory_order_release);
+
+    return future;
+  }
+
+public:
+  std::vector<pthread_t>
+  threads() const
+  {
+    std::lock_guard<std::mutex> lg(_threads_mutex);
+
+    return _threads;
+  }
+
+  moodycamel::ProducerToken
+  ptoken()
+  {
+    return moodycamel::ProducerToken(_queue);
+  }
+
+private:
+  Queue _queue;
+  std::atomic<unsigned> _queue_depth;
+  unsigned const        _max_queue_depth;
+
+private:
+  std::string const      _name;
+  std::vector<pthread_t> _threads;
+  mutable std::mutex     _threads_mutex;
+};

libfuse/lib/bounded_queue.hpp

@@ -1,165 +0,0 @@
-#pragma once
-
-#include <condition_variable>
-#include <mutex>
-#include <queue>
-#include <utility>
-
-
-template<typename T>
-class BoundedQueue
-{
-public:
-  explicit
-  BoundedQueue(std::size_t max_size_,
-               bool        block_ = true)
-    : _block(block),
-      _max_size(max_size_)
-  {
-    if(_max_size == 0)
-      _max_size = 1;
-  }
-
-  bool
-  push(const T& item_)
-  {
-    {
-      std::unique_lock guard(_queue_lock);
-
-      _condition_push.wait(guard, [&]() { return _queue.size() < _max_size || !_block; });
-
-      if(_queue.size() == _max_size)
-        return false;
-
-      _queue.push(item);
-    }
-
-    _condition_pop.notify_one();
-
-    return true;
-  }
-
-  bool
-  push(T&& item_)
-  {
-    {
-      std::unique_lock guard(_queue_lock);
-
-      _condition_push.wait(guard, [&]() { return _queue.size() < _max_size || !_block; });
-
-      if(_queue.size() == _max_size)
-        return false;
-
-      _queue.push(std::move(item_));
-    }
-    _condition_pop.notify_one();
-    return true;
-  }
-
-  template<typename... Args>
-  bool
-  emplace(Args&&... args_)
-  {
-    {
-      std::unique_lock guard(_queue_lock);
-
-      _condition_push.wait(guard, [&]() { return _queue.size() < _max_size || !_block; });
-
-      if(_queue.size() == _max_size)
-        return false;
-
-      _queue.emplace(std::forward<Args>(args_)...);
-    }
-
-    _condition_pop.notify_one();
-
-    return true;
-  }
-
-  bool
-  pop(T& item_)
-  {
-    {
-      std::unique_lock guard(_queue_lock);
-
-      _condition_pop.wait(guard, [&]() { return !_queue.empty() || !_block; });
-      if(_queue.empty())
-        return false;
-
-      item_ = std::move(_queue.front());
-
-      _queue.pop();
-    }
-
-    _condition_push.notify_one();
-
-    return true;
-  }
-
-  std::size_t
-  size() const
-  {
-    std::lock_guard guard(_queue_lock);
-
-    return _queue.size();
-  }
-
-  std::size_t
-  capacity() const
-  {
-    return _max_size;
-  }
-
-  bool
-  empty() const
-  {
-    std::lock_guard guard(_queue_lock);
-
-    return _queue.empty();
-  }
-
-  bool
-  full() const
-  {
-    std::lock_guard lock(_queue_lock);
-
-    return (_queue.size() == capacity());
-  }
-
-  void
-  block()
-  {
-    std::lock_guard guard(_queue_lock);
-    _block = true;
-  }
-
-  void
-  unblock()
-  {
-    {
-      std::lock_guard guard(_queue_lock);
-      _block = false;
-    }
-
-    _condition_push.notify_all();
-    _condition_pop.notify_all();
-  }
-
-  bool
-  blocking() const
-  {
-    std::lock_guard guard(_queue_lock);
-
-    return _block;
-  }
-
-private:
-  mutable std::mutex _queue_lock;
-
-private:
-  bool _block;
-  std::queue<T> _queue;
-  const std::size_t _max_size;
-  std::condition_variable _condition_push;
-  std::condition_variable _condition_pop;
-};

libfuse/lib/fuse_config.cpp

@@ -0,0 +1,73 @@
+/*
+  ISC License
+
+  Copyright (c) 2023, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <string>
+
+static int         g_READ_THREAD_COUNT          = -1;
+static int         g_PROCESS_THREAD_COUNT       = -1;
+static int         g_PROCESS_THREAD_QUEUE_DEPTH = -1;
+static std::string g_PIN_THREADS                = {};
+
+
+int
+fuse_config_get_read_thread_count()
+{
+  return g_READ_THREAD_COUNT;
+}
+
+void
+fuse_config_set_read_thread_count(int const v_)
+{
+  g_READ_THREAD_COUNT = v_;
+}
+
+int
+fuse_config_get_process_thread_count()
+{
+  return g_PROCESS_THREAD_COUNT;
+}
+
+void
+fuse_config_set_process_thread_count(int const v_)
+{
+  g_PROCESS_THREAD_COUNT = v_;
+}
+
+int
+fuse_config_get_process_thread_queue_depth()
+{
+  return g_PROCESS_THREAD_QUEUE_DEPTH;
+}
+
+void
+fuse_config_set_process_thread_queue_depth(int const v_)
+{
+  g_PROCESS_THREAD_QUEUE_DEPTH = v_;
+}
+
+std::string
+fuse_config_get_pin_threads()
+{
+  return g_PIN_THREADS;
+}
+
+void
+fuse_config_set_pin_threads(std::string const v_)
+{
+  g_PIN_THREADS = v_;
+}

libfuse/lib/fuse_dirents.c

@@ -304,9 +304,9 @@ fuse_dirents_add_plus(fuse_dirents_t      *d_,
 }
 
 int
-fuse_dirents_add_linux(fuse_dirents_t              *d_,
-                       const struct linux_dirent64 *dirent_,
-                       const uint64_t               namelen_)
+fuse_dirents_add_linux(fuse_dirents_t         *d_,
+                       const linux_dirent64_t *dirent_,
+                       const uint64_t          namelen_)
 {
   fuse_dirent_t *d;
 
@@ -336,11 +336,11 @@ fuse_dirents_add_linux(fuse_dirents_t              *d_,
 }
 
 int
-fuse_dirents_add_linux_plus(fuse_dirents_t              *d_,
-                            const struct linux_dirent64 *dirent_,
-                            const uint64_t               namelen_,
-                            const fuse_entry_t          *entry_,
-                            const struct stat           *st_)
+fuse_dirents_add_linux_plus(fuse_dirents_t         *d_,
+                            const linux_dirent64_t *dirent_,
+                            const uint64_t          namelen_,
+                            const fuse_entry_t     *entry_,
+                            const struct stat      *st_)
 {
   fuse_direntplus_t *d;
 

libfuse/lib/fuse_loop.cpp

@@ -2,15 +2,18 @@
 #define _GNU_SOURCE
 #endif
 
-#include "thread_pool.hpp"
 #include "cpu.hpp"
 #include "fmt/core.h"
+#include "make_unique.hpp"
+#include "scope_guard.hpp"
+#include "thread_pool.hpp"
 
 #include "fuse_i.h"
 #include "fuse_kernel.h"
 #include "fuse_lowlevel.h"
 #include "fuse_misc.h"
 
+#include "fuse_config.hpp"
 #include "fuse_msgbuf.hpp"
 #include "fuse_ll.hpp"
 
@@ -22,38 +25,12 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/time.h>
+#include <syslog.h>
 #include <unistd.h>
 
 #include <cassert>
 #include <vector>
 
-
-struct fuse_worker_data_t
-{
-  struct fuse_session *se;
-  sem_t finished;
-  std::function<void(fuse_worker_data_t*,fuse_msgbuf_t*)> msgbuf_processor;
-  std::shared_ptr<ThreadPool> tp;
-};
-
-class WorkerCleanup
-{
-public:
-  WorkerCleanup(fuse_worker_data_t *wd_)
-    : _wd(wd_)
-  {
-  }
-
-  ~WorkerCleanup()
-  {
-    fuse_session_exit(_wd->se);
-    sem_post(&_wd->finished);
-  }
-
-private:
-  fuse_worker_data_t *_wd;
-};
-
 static
 bool
 retriable_receive_error(const int err_)
@@ -77,54 +54,117 @@ fatal_receive_error(const int err_)
 }
 
 static
-void*
+void
 handle_receive_error(const int      rv_,
                      fuse_msgbuf_t *msgbuf_)
 {
   msgbuf_free(msgbuf_);
 
-  fprintf(stderr,
-          "mergerfs: error reading from /dev/fuse - %s (%d)\n",
-          strerror(-rv_),
-          -rv_);
-
-  return NULL;
+  fmt::print(stderr,
+             "mergerfs: error reading from /dev/fuse - {} ({})\n",
+             strerror(-rv_),
+             -rv_);
 }
 
-static
-void*
-fuse_do_work(void *data)
+struct AsyncWorker
 {
-  fuse_worker_data_t *wd = (fuse_worker_data_t*)data;
-  fuse_session       *se = wd->se;
-  auto               &process_msgbuf = wd->msgbuf_processor;
-  WorkerCleanup       workercleanup(wd);
+  fuse_session *_se;
+  sem_t *_finished;
+  std::shared_ptr<ThreadPool> _process_tp;
 
-  while(!fuse_session_exited(se))
-    {
-      int rv;
-      fuse_msgbuf_t *msgbuf;
+  AsyncWorker(fuse_session                       *se_,
+              sem_t                              *finished_,
+              std::shared_ptr<ThreadPool>  process_tp_)
+    : _se(se_),
+      _finished(finished_),
+      _process_tp(process_tp_)
+  {
+  }
 
-      msgbuf = msgbuf_alloc();
+  inline
+  void
+  operator()() const
+  {
+    DEFER{ fuse_session_exit(_se); };
+    DEFER{ sem_post(_finished); };
 
-      do
+    moodycamel::ProducerToken ptok(_process_tp->ptoken());
+    while(!fuse_session_exited(_se))
+      {
+        int rv;
+        fuse_msgbuf_t *msgbuf;
+
+        msgbuf = msgbuf_alloc();
+
+        do
+          {
+            pthread_setcancelstate(PTHREAD_CANCEL_ENABLE,NULL);
+            rv = _se->receive_buf(_se,msgbuf);
+            pthread_setcancelstate(PTHREAD_CANCEL_DISABLE,NULL);
+            if(rv == 0)
+              return;
+            if(retriable_receive_error(rv))
+              continue;
+            if(fatal_receive_error(rv))
+              return handle_receive_error(rv,msgbuf);
+          } while(false);
+
+        auto const func = [=]
         {
-          pthread_setcancelstate(PTHREAD_CANCEL_ENABLE,NULL);
-          rv = se->receive_buf(se,msgbuf);
-          pthread_setcancelstate(PTHREAD_CANCEL_DISABLE,NULL);
-          if(rv == 0)
-            return NULL;
-          if(retriable_receive_error(rv))
-            continue;
-          if(fatal_receive_error(rv))
-            return handle_receive_error(rv,msgbuf);
-        } while(false);
+          _se->process_buf(_se,msgbuf);
+          msgbuf_free(msgbuf);
+        };
 
-      process_msgbuf(wd,msgbuf);
-    }
+        _process_tp->enqueue_work(ptok,func);
+      }
+  }
+};
 
-  return NULL;
-}
+struct SyncWorker
+{
+  fuse_session *_se;
+  sem_t *_finished;
+
+  SyncWorker(fuse_session *se_,
+             sem_t        *finished_)
+
+    : _se(se_),
+      _finished(finished_)
+  {
+  }
+
+  inline
+  void
+  operator()() const
+  {
+    DEFER{ fuse_session_exit(_se); };
+    DEFER{ sem_post(_finished); };
+
+    while(!fuse_session_exited(_se))
+      {
+        int rv;
+        fuse_msgbuf_t *msgbuf;
+
+        msgbuf = msgbuf_alloc();
+
+        do
+          {
+            pthread_setcancelstate(PTHREAD_CANCEL_ENABLE,NULL);
+            rv = _se->receive_buf(_se,msgbuf);
+            pthread_setcancelstate(PTHREAD_CANCEL_DISABLE,NULL);
+            if(rv == 0)
+              return;
+            if(retriable_receive_error(rv))
+              continue;
+            if(fatal_receive_error(rv))
+              return handle_receive_error(rv,msgbuf);
+          } while(false);
+
+        _se->process_buf(_se,msgbuf);
+        msgbuf_free(msgbuf);
+      }
+  }
+};
 
 int
 fuse_start_thread(pthread_t *thread_id,
@@ -174,7 +214,8 @@ calculate_thread_count(const int raw_thread_count_)
 static
 void
 calculate_thread_counts(int *read_thread_count_,
-                        int *process_thread_count_)
+                        int *process_thread_count_,
+                        int *process_thread_queue_depth_)
 {
   if((*read_thread_count_ == -1) && (*process_thread_count_ == -1))
     {
@@ -190,27 +231,9 @@ calculate_thread_counts(int *read_thread_count_,
       if(*process_thread_count_ != -1)
         *process_thread_count_ = ::calculate_thread_count(*process_thread_count_);
     }
-}
 
-static
-void
-process_msgbuf_sync(fuse_worker_data_t *wd_,
-                    fuse_msgbuf_t      *msgbuf_)
-{
-  wd_->se->process_buf(wd_->se,msgbuf_);
-  msgbuf_free(msgbuf_);
-}
-
-static
-void
-process_msgbuf_async(fuse_worker_data_t *wd_,
-                     fuse_msgbuf_t      *msgbuf_)
-{
-  const auto func = [=] {
-    process_msgbuf_sync(wd_,msgbuf_);
-  };
-
-  wd_->tp->enqueue_work(func);
+  if(*process_thread_queue_depth_ <= 0)
+    *process_thread_queue_depth_ = *process_thread_count_;
 }
 
 static
@@ -401,10 +424,12 @@ pin_threads_R1PPSP(const std::vector<pthread_t> read_threads_,
 
 static
 void
-pin_threads(const std::vector<pthread_t>  read_threads_,
-            const std::vector<pthread_t>  process_threads_,
-            const std::string             type_)
+pin_threads(const std::vector<pthread_t> read_threads_,
+            const std::vector<pthread_t> process_threads_,
+            const std::string            type_)
 {
+  if(type_.empty() || (type_ == "false"))
+    return;
   if(type_ == "R1L")
     return ::pin_threads_R1L(read_threads_);
   if(type_ == "R1P")
@@ -423,65 +448,108 @@ pin_threads(const std::vector<pthread_t>  read_threads_,
     return ::pin_threads_RPSP(read_threads_,process_threads_);
   if(type_ == "R1PPSP")
     return ::pin_threads_R1PPSP(read_threads_,process_threads_);
+
+  syslog(LOG_WARNING,
+         "Invalid pin-threads value, ignoring: %s",
+         type_.c_str());
+}
+
+static
+void
+wait(fuse_session *se_,
+     sem_t        *finished_sem_)
+{
+  while(!fuse_session_exited(se_))
+    sem_wait(finished_sem_);
 }
 
 int
 fuse_session_loop_mt(struct fuse_session *se_,
                      const int            raw_read_thread_count_,
                      const int            raw_process_thread_count_,
-                     const char          *pin_threads_type_)
+                     const int            raw_process_thread_queue_depth_,
+                     const std::string    pin_threads_type_)
 {
-  int err;
+  sem_t finished;
   int read_thread_count;
   int process_thread_count;
-  fuse_worker_data_t wd = {0};
+  int process_thread_queue_depth;
   std::vector<pthread_t> read_threads;
   std::vector<pthread_t> process_threads;
+  std::unique_ptr<ThreadPool> read_tp;
+  std::shared_ptr<ThreadPool> process_tp;
 
-  read_thread_count    = raw_read_thread_count_;
-  process_thread_count = raw_process_thread_count_;
-  ::calculate_thread_counts(&read_thread_count,&process_thread_count);
+  sem_init(&finished,0,0);
+
+  read_thread_count          = raw_read_thread_count_;
+  process_thread_count       = raw_process_thread_count_;
+  process_thread_queue_depth = raw_process_thread_queue_depth_;
+  ::calculate_thread_counts(&read_thread_count,
+                            &process_thread_count,
+                            &process_thread_queue_depth);
 
   if(process_thread_count > 0)
+    process_tp = std::make_shared<ThreadPool>(process_thread_count,
+                                              (process_thread_count *
+                                               process_thread_queue_depth),
+                                              "fuse.process");
+
+  read_tp = std::make_unique<ThreadPool>(read_thread_count,
+                                         read_thread_count,
+                                         "fuse.read");
+  if(process_tp)
     {
-      wd.tp = std::make_shared<ThreadPool>(process_thread_count);
-      wd.msgbuf_processor = process_msgbuf_async;
-      process_threads = wd.tp->threads();
+      for(auto i = 0; i < read_thread_count; i++)
+        read_tp->enqueue_work(AsyncWorker(se_,&finished,process_tp));
     }
   else
     {
-      wd.msgbuf_processor = process_msgbuf_sync;
+      for(auto i = 0; i < read_thread_count; i++)
+        read_tp->enqueue_work(SyncWorker(se_,&finished));
     }
 
-  wd.se = se_;
-  sem_init(&wd.finished,0,0);
+  if(read_tp)
+    read_threads = read_tp->threads();
+  if(process_tp)
+    process_threads = process_tp->threads();
 
-  err = 0;
-  for(int i = 0; i < read_thread_count; i++)
-    {
-      pthread_t thread_id;
-      err = fuse_start_thread(&thread_id,fuse_do_work,&wd);
-      assert(err == 0);
-      read_threads.push_back(thread_id);
-    }
+  ::pin_threads(read_threads,process_threads,pin_threads_type_);
 
-  if(pin_threads_type_ != NULL)
-    ::pin_threads(read_threads,process_threads,pin_threads_type_);
+  syslog(LOG_INFO,
+         "read-thread-count=%d; "
+         "process-thread-count=%d; "
+         "process-thread-queue-depth=%d; "
+         "pin-threads=%s;"
+         ,
+         read_thread_count,
+         process_thread_count,
+         process_thread_queue_depth,
+         pin_threads_type_.c_str());
 
-  if(!err)
-    {
-      /* sem_wait() is interruptible */
-      while(!fuse_session_exited(se_))
-        sem_wait(&wd.finished);
+  ::wait(se_,&finished);
 
-      for(const auto &thread_id : read_threads)
-        pthread_cancel(thread_id);
+  sem_destroy(&finished);
 
-      for(const auto &thread_id : read_threads)
-        pthread_join(thread_id,NULL);
-    }
+  return 0;
+}
 
-  sem_destroy(&wd.finished);
+int
+fuse_loop_mt(struct fuse *f)
+{
+  if(f == NULL)
+    return -1;
 
-  return err;
+  int res = fuse_start_maintenance_thread(f);
+  if(res)
+    return -1;
+
+  res = fuse_session_loop_mt(fuse_get_session(f),
+                             fuse_config_get_read_thread_count(),
+                             fuse_config_get_process_thread_count(),
+                             fuse_config_get_process_thread_queue_depth(),
+                             fuse_config_get_pin_threads());
+
+  fuse_stop_maintenance_thread(f);
+
+  return res;
 }

libfuse/lib/fuse_lowlevel.c

@@ -19,15 +19,16 @@
 #include "fuse_pollhandle.h"
 #include "fuse_msgbuf.hpp"
 
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <stddef.h>
 #include <string.h>
-#include <unistd.h>
-#include <limits.h>
-#include <errno.h>
-#include <assert.h>
 #include <sys/file.h>
+#include <syslog.h>
+#include <unistd.h>
 
 #ifndef F_LINUX_SPECIFIC_BASE
 #define F_LINUX_SPECIFIC_BASE       1024
@@ -261,18 +262,22 @@ fill_entry(struct fuse_entry_out         *arg,
 
 static
 void
-fill_open(struct fuse_open_out   *arg,
-          const fuse_file_info_t *f)
+fill_open(struct fuse_open_out   *arg_,
+          const fuse_file_info_t *ffi_)
 {
-  arg->fh = f->fh;
-  if(f->direct_io)
-    arg->open_flags |= FOPEN_DIRECT_IO;
-  if(f->keep_cache)
-    arg->open_flags |= FOPEN_KEEP_CACHE;
-  if(f->nonseekable)
-    arg->open_flags |= FOPEN_NONSEEKABLE;
-  if(f->cache_readdir)
-    arg->open_flags |= FOPEN_CACHE_DIR;
+  arg_->fh = ffi_->fh;
+  if(ffi_->direct_io)
+    arg_->open_flags |= FOPEN_DIRECT_IO;
+  if(ffi_->keep_cache)
+    arg_->open_flags |= FOPEN_KEEP_CACHE;
+  if(ffi_->nonseekable)
+    arg_->open_flags |= FOPEN_NONSEEKABLE;
+  if(ffi_->cache_readdir)
+    arg_->open_flags |= FOPEN_CACHE_DIR;
+  if(ffi_->parallel_direct_writes)
+    arg_->open_flags |= FOPEN_PARALLEL_DIRECT_WRITES;
+  if(ffi_->noflush)
+    arg_->open_flags |= FOPEN_NOFLUSH;
 }
 
 int
@@ -316,6 +321,19 @@ fuse_reply_create(fuse_req_t                     req,
   return send_reply_ok(req, &buf, entrysize + sizeof(struct fuse_open_out));
 }
 
+static
+int
+fuse_valid_type(uint32_t const m_)
+{
+  return (S_ISREG(m_)  ||
+          S_ISDIR(m_)  ||
+          S_ISLNK(m_)  ||
+          S_ISCHR(m_)  ||
+          S_ISBLK(m_)  ||
+          S_ISFIFO(m_) ||
+          S_ISSOCK(m_));
+}
+
 int
 fuse_reply_attr(fuse_req_t         req,
                 const struct stat *attr,
@@ -329,6 +347,11 @@ fuse_reply_attr(fuse_req_t         req,
   arg.attr_valid_nsec = 0;
   convert_stat(attr,&arg.attr);
 
+  if(arg.attr.size > LLONG_MAX)
+    syslog(LOG_ERR,"fuse_reply_attr: attr.size > LLONG_MAX");
+  if(!fuse_valid_type(arg.attr.mode))
+    syslog(LOG_ERR,"fuse_reply_attr: invalid type %x",arg.attr.mode);
+
   return send_reply_ok(req,&arg,size);
 }
 
@@ -1328,6 +1351,42 @@ do_copy_file_range(fuse_req_t             req_,
   req_->f->op.copy_file_range(req_,hdr_);
 }
 
+static
+void
+do_setupmapping(fuse_req_t                req_,
+                   struct fuse_in_header *hdr_)
+{
+  printf("setupmapping\n");
+  req_->f->op.setupmapping(req_,hdr_);
+}
+
+static
+void
+do_removemapping(fuse_req_t             req_,
+                 struct fuse_in_header *hdr_)
+{
+  printf("removemapping\n");
+  req_->f->op.removemapping(req_,hdr_);
+}
+
+static
+void
+do_syncfs(fuse_req_t             req_,
+          struct fuse_in_header *hdr_)
+{
+  printf("syncfs\n");
+  req_->f->op.syncfs(req_,hdr_);
+}
+
+static
+void
+do_tmpfile(fuse_req_t             req_,
+           struct fuse_in_header *hdr_)
+{
+  printf("tmpfile\n");
+  req_->f->op.tmpfile(req_,hdr_);
+}
+
 static
 int
 send_notify_iov(struct fuse_ll   *f,
@@ -1414,9 +1473,10 @@ fuse_lowlevel_notify_inval_entry(struct fuse_chan *ch,
   if(!f)
     return -ENODEV;
 
-  outarg.parent = parent;
+  outarg.parent  = parent;
   outarg.namelen = namelen;
-  outarg.padding = 0;
+  // TODO: Add ability to set `flags`
+  outarg.flags   = 0;
 
   iov[1].iov_base = &outarg;
   iov[1].iov_len = sizeof(outarg);
@@ -1640,6 +1700,10 @@ static struct {
     [FUSE_NOTIFY_REPLY]    = { do_notify_reply,    "NOTIFY_REPLY"    },
     [FUSE_BATCH_FORGET]    = { do_batch_forget,    "BATCH_FORGET"    },
     [FUSE_COPY_FILE_RANGE] = { do_copy_file_range, "COPY_FILE_RANGE" },
+    [FUSE_SETUPMAPPING]    = { do_setupmapping,    "SETUPMAPPING"    },
+    [FUSE_REMOVEMAPPING]   = { do_removemapping,   "REMOVEMAPPING"   },
+    [FUSE_SYNCFS]          = { do_syncfs,          "SYNCFS"          },
+    [FUSE_TMPFILE]         = { do_tmpfile,         "TMPFILE"         }
   };
 
 #define FUSE_MAXOP (sizeof(fuse_ll_ops) / sizeof(fuse_ll_ops[0]))
@@ -1812,6 +1876,8 @@ fuse_ll_buf_process_read(struct fuse_session *se_,
 
   in = (struct fuse_in_header*)msgbuf_->mem;
 
+  //  printf("%d\n",in->opcode);
+
   req = fuse_ll_alloc_req(se_->f);
   if(req == NULL)
     return fuse_send_enomem(se_->f,se_->ch,in->unique);

libfuse/lib/fuse_msgbuf.cpp

@@ -17,39 +17,26 @@
 
 #include "fuse_msgbuf.hpp"
 #include "fuse.h"
+#include "fuse_kernel.h"
 
 #include <unistd.h>
 
+#include <atomic>
 #include <cstdint>
 #include <cstdlib>
 #include <mutex>
-#include <stack>
+#include <vector>
 
 
 static std::uint32_t g_PAGESIZE = 0;
 static std::uint32_t g_BUFSIZE  = 0;
 
+static std::atomic<std::uint_fast64_t> g_MSGBUF_ALLOC_COUNT;
+
 static std::mutex g_MUTEX;
-static std::stack<fuse_msgbuf_t*> g_MSGBUF_STACK;
+static std::vector<fuse_msgbuf_t*> g_MSGBUF_STACK;
 
-static
-__attribute__((constructor))
-void
-msgbuf_constructor()
-{
-  g_PAGESIZE = sysconf(_SC_PAGESIZE);
-  g_BUFSIZE  = (g_PAGESIZE * (FUSE_MAX_MAX_PAGES + 2));
-}
-
-static
-__attribute__((destructor))
-void
-msgbuf_destroy()
-{
-  // TODO: cleanup?
-}
-
-uint32_t
+uint64_t
 msgbuf_get_bufsize()
 {
   return g_BUFSIZE;
@@ -58,7 +45,43 @@ msgbuf_get_bufsize()
 void
 msgbuf_set_bufsize(const uint32_t size_in_pages_)
 {
-  g_BUFSIZE = (size_in_pages_ * g_PAGESIZE);
+  g_BUFSIZE = ((size_in_pages_ + 1) * g_PAGESIZE);
+}
+
+void
+msgbuf_page_align(fuse_msgbuf_t *msgbuf_)
+{
+  msgbuf_->mem   = (char*)msgbuf_;
+  msgbuf_->mem  += g_PAGESIZE;
+  msgbuf_->size  = (g_BUFSIZE - g_PAGESIZE);
+}
+
+void
+msgbuf_write_align(fuse_msgbuf_t *msgbuf_)
+{
+  msgbuf_->mem   = (char*)msgbuf_;
+  msgbuf_->mem  += g_PAGESIZE;
+  msgbuf_->mem  -= sizeof(struct fuse_in_header);
+  msgbuf_->mem  -= sizeof(struct fuse_write_in);
+  msgbuf_->size  = (g_BUFSIZE - g_PAGESIZE);
+}
+
+static
+__attribute__((constructor))
+void
+msgbuf_constructor()
+{
+  g_PAGESIZE = sysconf(_SC_PAGESIZE);
+  // FUSE_MAX_MAX_PAGES for payload + 1 for message header
+  msgbuf_set_bufsize(FUSE_MAX_MAX_PAGES + 1);
+}
+
+static
+__attribute__((destructor))
+void
+msgbuf_destroy()
+{
+
 }
 
 static
@@ -75,8 +98,11 @@ page_aligned_malloc(const uint64_t size_)
   return buf;
 }
 
+typedef void (*msgbuf_setup_func_t)(fuse_msgbuf_t*);
+
+static
 fuse_msgbuf_t*
-msgbuf_alloc()
+_msgbuf_alloc(msgbuf_setup_func_t setup_func_)
 {
   fuse_msgbuf_t *msgbuf;
 
@@ -85,40 +111,118 @@ msgbuf_alloc()
     {
       g_MUTEX.unlock();
 
-      msgbuf = (fuse_msgbuf_t*)malloc(sizeof(fuse_msgbuf_t));
+      msgbuf = (fuse_msgbuf_t*)page_aligned_malloc(g_BUFSIZE);
       if(msgbuf == NULL)
         return NULL;
 
-      msgbuf->mem = (char*)page_aligned_malloc(g_BUFSIZE);
-      if(msgbuf->mem == NULL)
-        {
-          free(msgbuf);
-          return NULL;
-        }
-
-      msgbuf->size = g_BUFSIZE;
+      g_MSGBUF_ALLOC_COUNT.fetch_add(1,std::memory_order_relaxed);
     }
   else
     {
-      msgbuf = g_MSGBUF_STACK.top();
-      g_MSGBUF_STACK.pop();
+      msgbuf = g_MSGBUF_STACK.back();
+      g_MSGBUF_STACK.pop_back();
       g_MUTEX.unlock();
     }
 
+  setup_func_(msgbuf);
+
   return msgbuf;
 }
 
+// Offset the memory so write request payload will be placed on page
+// boundry so O_DIRECT can work. No impact on other message types
+// except for `read` which will require using `msgbuf_page_align`.
+fuse_msgbuf_t*
+msgbuf_alloc()
+{
+  return _msgbuf_alloc(msgbuf_write_align);
+}
+
+fuse_msgbuf_t*
+msgbuf_alloc_page_aligned()
+{
+  return _msgbuf_alloc(msgbuf_page_align);
+}
+
+static
+void
+msgbuf_destroy(fuse_msgbuf_t *msgbuf_)
+{
+  //  free(msgbuf_->mem);
+  free(msgbuf_);
+}
+
 void
 msgbuf_free(fuse_msgbuf_t *msgbuf_)
 {
   std::lock_guard<std::mutex> lck(g_MUTEX);
 
-  if(msgbuf_->size != g_BUFSIZE)
+  if(msgbuf_->size != (g_BUFSIZE - g_PAGESIZE))
     {
-      free(msgbuf_->mem);
-      free(msgbuf_);
+      msgbuf_destroy(msgbuf_);
+      g_MSGBUF_ALLOC_COUNT.fetch_sub(1,std::memory_order_relaxed);
       return;
     }
 
-  g_MSGBUF_STACK.push(msgbuf_);
+  g_MSGBUF_STACK.emplace_back(msgbuf_);
+
+}
+
+uint64_t
+msgbuf_alloc_count()
+{
+  return g_MSGBUF_ALLOC_COUNT;
+}
+
+uint64_t
+msgbuf_avail_count()
+{
+  std::lock_guard<std::mutex> lck(g_MUTEX);
+
+  return g_MSGBUF_STACK.size();
+}
+
+void
+msgbuf_gc_10percent()
+{
+  std::vector<fuse_msgbuf_t*> togc;
+
+  {
+    std::size_t size;
+    std::size_t ten_percent;
+
+    std::lock_guard<std::mutex> lck(g_MUTEX);
+
+    size        = g_MSGBUF_STACK.size();
+    ten_percent = (size / 10);
+
+    for(std::size_t i = 0; i < ten_percent; i++)
+      {
+        togc.push_back(g_MSGBUF_STACK.back());
+        g_MSGBUF_STACK.pop_back();
+      }
+  }
+
+  for(auto msgbuf : togc)
+    {
+      msgbuf_destroy(msgbuf);
+      g_MSGBUF_ALLOC_COUNT.fetch_sub(1,std::memory_order_relaxed);
+    }
+}
+
+void
+msgbuf_gc()
+{
+  std::vector<fuse_msgbuf_t*> oldstack;
+
+  {
+    std::lock_guard<std::mutex> lck(g_MUTEX);
+    oldstack.swap(g_MSGBUF_STACK);
+  }
+
+  for(auto msgbuf: oldstack)
+    {
+      msgbuf_destroy(msgbuf);
+      g_MSGBUF_ALLOC_COUNT.fetch_sub(1,std::memory_order_relaxed);
+    }
 }

libfuse/lib/fuse_msgbuf.hpp

@@ -24,10 +24,19 @@
 EXTERN_C_BEGIN
 
 void     msgbuf_set_bufsize(const uint32_t size);
-uint32_t msgbuf_get_bufsize();
+uint64_t msgbuf_get_bufsize();
 
-fuse_msgbuf_t* msgbuf_alloc();
-fuse_msgbuf_t* msgbuf_alloc_memonly();
+fuse_msgbuf_t *msgbuf_alloc();
+fuse_msgbuf_t *msgbuf_alloc_page_aligned();
 void           msgbuf_free(fuse_msgbuf_t *msgbuf);
 
+void           msgbuf_gc();
+void           msgbuf_gc_10percent();
+
+uint64_t       msgbuf_alloc_count();
+uint64_t       msgbuf_avail_count();
+
+void           msgbuf_page_align(fuse_msgbuf_t *msgbuf);
+void           msgbuf_write_align(fuse_msgbuf_t *msgbuf);
+
 EXTERN_C_END

libfuse/lib/fuse_mt.c

@@ -1,37 +0,0 @@
-/*
-  FUSE: Filesystem in Userspace
-  Copyright (C) 2001-2007  Miklos Szeredi <miklos@szeredi.hu>
-
-  This program can be distributed under the terms of the GNU LGPLv2.
-  See the file COPYING.LIB.
-*/
-
-#include "fuse_i.h"
-#include "fuse_misc.h"
-#include "fuse_lowlevel.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <assert.h>
-
-int
-fuse_loop_mt(struct fuse *f)
-{
-  if (f == NULL)
-    return -1;
-
-  int res = fuse_start_maintenance_thread(f);
-  if (res)
-    return -1;
-
-  res = fuse_session_loop_mt(fuse_get_session(f),
-                             fuse_config_read_thread_count(f),
-                             fuse_config_process_thread_count(f),
-                             fuse_config_pin_threads(f));
-
-  fuse_stop_maintenance_thread(f);
-
-  return res;
-}

libfuse/lib/fuse_signals.c

@@ -14,9 +14,11 @@
 
 static struct fuse_session *fuse_instance;
 
-static void exit_handler(int sig)
+static
+void
+exit_handler(int sig)
 {
-  (void) sig;
+  (void)sig;
   if (fuse_instance)
     fuse_session_exit(fuse_instance);
 }
@@ -46,10 +48,10 @@ static int set_one_signal_handler(int sig, void (*handler)(int), int remove)
 
 int fuse_set_signal_handlers(struct fuse_session *se)
 {
-  if (set_one_signal_handler(SIGHUP, exit_handler, 0) == -1 ||
-      set_one_signal_handler(SIGINT, exit_handler, 0) == -1 ||
-      set_one_signal_handler(SIGTERM, exit_handler, 0) == -1 ||
-      set_one_signal_handler(SIGPIPE, SIG_IGN, 0) == -1)
+  if((set_one_signal_handler(SIGINT, exit_handler, 0)  == -1) ||
+     (set_one_signal_handler(SIGTERM, exit_handler, 0) == -1) ||
+     (set_one_signal_handler(SIGQUIT, exit_handler, 0) == -1) ||
+     (set_one_signal_handler(SIGPIPE, SIG_IGN, 0)      == -1))
     return -1;
 
   fuse_instance = se;
@@ -64,8 +66,8 @@ void fuse_remove_signal_handlers(struct fuse_session *se)
   else
     fuse_instance = NULL;
 
-  set_one_signal_handler(SIGHUP, exit_handler, 1);
   set_one_signal_handler(SIGINT, exit_handler, 1);
   set_one_signal_handler(SIGTERM, exit_handler, 1);
+  set_one_signal_handler(SIGQUIT, exit_handler, 1);
   set_one_signal_handler(SIGPIPE, SIG_IGN, 1);
 }

libfuse/lib/lock.h

@@ -0,0 +1,13 @@
+#include <stdint.h>
+#include <sys/types.h>
+
+typedef struct lock_s lock_t;
+struct lock_s
+{
+  int type;
+  off_t start;
+  off_t end;
+  pid_t pid;
+  uint64_t owner;
+  lock_t *next;
+};

libfuse/lib/make_unique.hpp

@@ -0,0 +1,41 @@
+#include <cstddef>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+namespace std
+{
+  template<class T> struct _Unique_if
+  {
+    typedef unique_ptr<T> _Single_object;
+  };
+
+  template<class T> struct _Unique_if<T[]>
+  {
+    typedef unique_ptr<T[]> _Unknown_bound;
+  };
+
+  template<class T, size_t N> struct _Unique_if<T[N]>
+  {
+    typedef void _Known_bound;
+  };
+
+  template<class T, class... Args>
+  typename _Unique_if<T>::_Single_object
+  make_unique(Args&&... args)
+  {
+    return unique_ptr<T>(new T(std::forward<Args>(args)...));
+  }
+
+  template<class T>
+  typename _Unique_if<T>::_Unknown_bound
+  make_unique(size_t n)
+  {
+    typedef typename remove_extent<T>::type U;
+    return unique_ptr<T>(new U[n]());
+  }
+
+  template<class T, class... Args>
+  typename _Unique_if<T>::_Known_bound
+  make_unique(Args&&...) = delete;
+}

libfuse/lib/mount_generic.c

@@ -61,6 +61,7 @@ enum {
 };
 
 struct mount_opts {
+  int allow_other;
   int ishelp;
   int flags;
   int auto_unmount;
@@ -76,13 +77,15 @@ struct mount_opts {
 #define FUSE_MOUNT_OPT(t, p) { t, offsetof(struct mount_opts, p), 1 }
 
 static const struct fuse_opt fuse_mount_opts[] = {
+  FUSE_MOUNT_OPT("allow_other",         allow_other),
   FUSE_MOUNT_OPT("blkdev",		blkdev),
-  FUSE_MOUNT_OPT("auto_unmount",		auto_unmount),
+  FUSE_MOUNT_OPT("auto_unmount",	auto_unmount),
   FUSE_MOUNT_OPT("fsname=%s",		fsname),
   FUSE_MOUNT_OPT("subtype=%s",		subtype),
+  FUSE_OPT_KEY("allow_other",           KEY_KERN_OPT),
   FUSE_OPT_KEY("auto_unmount",		KEY_FUSERMOUNT_OPT),
-  FUSE_OPT_KEY("blkdev",			KEY_FUSERMOUNT_OPT),
-  FUSE_OPT_KEY("fsname=",			KEY_FUSERMOUNT_OPT),
+  FUSE_OPT_KEY("blkdev",		KEY_FUSERMOUNT_OPT),
+  FUSE_OPT_KEY("fsname=",		KEY_FUSERMOUNT_OPT),
   FUSE_OPT_KEY("subtype=",		KEY_SUBTYPE_OPT),
   FUSE_OPT_KEY("large_read",		KEY_KERN_OPT),
   FUSE_OPT_KEY("blksize=",		KEY_KERN_OPT),
@@ -98,18 +101,18 @@ static const struct fuse_opt fuse_mount_opts[] = {
   FUSE_OPT_KEY("ro",			KEY_KERN_FLAG),
   FUSE_OPT_KEY("rw",			KEY_KERN_FLAG),
   FUSE_OPT_KEY("suid",			KEY_KERN_FLAG),
-  FUSE_OPT_KEY("nosuid",			KEY_KERN_FLAG),
+  FUSE_OPT_KEY("nosuid",		KEY_KERN_FLAG),
   FUSE_OPT_KEY("dev",			KEY_KERN_FLAG),
   FUSE_OPT_KEY("nodev",			KEY_KERN_FLAG),
   FUSE_OPT_KEY("exec",			KEY_KERN_FLAG),
-  FUSE_OPT_KEY("noexec",			KEY_KERN_FLAG),
+  FUSE_OPT_KEY("noexec",		KEY_KERN_FLAG),
   FUSE_OPT_KEY("async",			KEY_KERN_FLAG),
   FUSE_OPT_KEY("sync",			KEY_KERN_FLAG),
-  FUSE_OPT_KEY("dirsync",			KEY_KERN_FLAG),
+  FUSE_OPT_KEY("dirsync",		KEY_KERN_FLAG),
   FUSE_OPT_KEY("atime",			KEY_KERN_FLAG),
-  FUSE_OPT_KEY("noatime",			KEY_KERN_FLAG),
+  FUSE_OPT_KEY("noatime",		KEY_KERN_FLAG),
   FUSE_OPT_KEY("-h",			KEY_HELP),
-  FUSE_OPT_KEY("--help",			KEY_HELP),
+  FUSE_OPT_KEY("--help",		KEY_HELP),
   FUSE_OPT_KEY("-V",			KEY_VERSION),
   FUSE_OPT_KEY("--version",		KEY_VERSION),
   FUSE_OPT_END
@@ -549,8 +552,6 @@ int fuse_kern_mount(const char *mountpoint, struct fuse_args *args)
       fuse_opt_parse(args, &mo, fuse_mount_opts, fuse_mount_opt_proc) == -1)
     return -1;
 
-  fuse_opt_add_opt(&mo.kernel_opts,"allow_other");
-
   res = 0;
   if (mo.ishelp)
     goto out;

libfuse/lib/node.c

@@ -0,0 +1,60 @@
+#include "node.h"
+
+#include "lfmp.h"
+
+static lfmp_t g_NODE_FMP;
+
+static
+__attribute__((constructor))
+void
+node_constructor()
+{
+  lfmp_init(&g_NODE_FMP,sizeof(node_t),256);
+}
+
+static
+__attribute__((destructor))
+void
+node_destructor()
+{
+  lfmp_destroy(&g_NODE_FMP);
+}
+
+node_t *
+node_alloc()
+{
+  return lfmp_calloc(&g_NODE_FMP);
+}
+
+void
+node_free(node_t *node_)
+{
+  lfmp_free(&g_NODE_FMP,node_);
+}
+
+int
+node_gc1()
+{
+  return lfmp_gc(&g_NODE_FMP);
+}
+
+void
+node_gc()
+{
+  int rv;
+  int fails;
+
+  fails = 0;
+  do
+    {
+      rv = node_gc1();
+      if(rv == 0)
+        fails++;
+    } while(rv || (fails < 3));
+}
+
+lfmp_t*
+node_lfmp()
+{
+  return &g_NODE_FMP;
+}

libfuse/lib/node.h

@@ -0,0 +1,30 @@
+#include "lock.h"
+#include "lfmp.h"
+
+typedef struct node_s node_t;
+struct node_s
+{
+  node_t *name_next;
+  node_t *id_next;
+
+  uint64_t nodeid;
+  char *name;
+  node_t *parent;
+
+  uint64_t nlookup;
+  uint32_t refctr;
+  uint32_t open_count;
+  uint64_t hidden_fh;
+
+  int32_t treelock;
+  lock_t *locks;
+
+  uint32_t stat_crc32b;
+  uint8_t is_stat_cache_valid:1;
+};
+
+node_t *node_alloc();
+void    node_free(node_t*);
+int     node_gc1();
+void    node_gc();
+lfmp_t *node_lfmp();

libfuse/lib/scope_guard.hpp

@@ -0,0 +1,369 @@
+//   _____                         _____                     _    _____
+//  / ____|                       / ____|                   | |  / ____|_     _
+// | (___   ___ ___  _ __   ___  | |  __ _   _  __ _ _ __ __| | | |   _| |_ _| |_
+//  \___ \ / __/ _ \| '_ \ / _ \ | | |_ | | | |/ _` | '__/ _` | | |  |_   _|_   _|
+//  ____) | (_| (_) | |_) |  __/ | |__| | |_| | (_| | | | (_| | | |____|_|   |_|
+// |_____/ \___\___/| .__/ \___|  \_____|\__,_|\__,_|_|  \__,_|  \_____|
+//                  | | https://github.com/Neargye/scope_guard
+//                  |_| version 0.9.1
+//
+// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018 - 2021 Daniil Goncharov <neargye@gmail.com>.
+//
+// Permission is hereby  granted, free of charge, to any  person obtaining a copy
+// of this software and associated  documentation files (the "Software"), to deal
+// in the Software  without restriction, including without  limitation the rights
+// to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
+// copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
+// IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
+// FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
+// AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
+// LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#ifndef NEARGYE_SCOPE_GUARD_HPP
+#define NEARGYE_SCOPE_GUARD_HPP
+
+#define SCOPE_GUARD_VERSION_MAJOR 0
+#define SCOPE_GUARD_VERSION_MINOR 9
+#define SCOPE_GUARD_VERSION_PATCH 1
+
+#include <type_traits>
+#if (defined(_MSC_VER) && _MSC_VER >= 1900) || ((defined(__clang__) || defined(__GNUC__)) && __cplusplus >= 201700L)
+#include <exception>
+#endif
+
+// scope_guard throwable settings:
+// SCOPE_GUARD_NO_THROW_CONSTRUCTIBLE requires nothrow constructible action.
+// SCOPE_GUARD_MAY_THROW_ACTION action may throw exceptions.
+// SCOPE_GUARD_NO_THROW_ACTION requires noexcept action.
+// SCOPE_GUARD_SUPPRESS_THROW_ACTION exceptions during action will be suppressed.
+// SCOPE_GUARD_CATCH_HANDLER exceptions handler. If SCOPE_GUARD_SUPPRESS_THROW_ACTIONS is not defined, it will do nothing.
+
+#if !defined(SCOPE_GUARD_MAY_THROW_ACTION) && !defined(SCOPE_GUARD_NO_THROW_ACTION) && !defined(SCOPE_GUARD_SUPPRESS_THROW_ACTION)
+#  define SCOPE_GUARD_MAY_THROW_ACTION
+#elif (defined(SCOPE_GUARD_MAY_THROW_ACTION) + defined(SCOPE_GUARD_NO_THROW_ACTION) + defined(SCOPE_GUARD_SUPPRESS_THROW_ACTION)) > 1
+#  error Only one of SCOPE_GUARD_MAY_THROW_ACTION and SCOPE_GUARD_NO_THROW_ACTION and SCOPE_GUARD_SUPPRESS_THROW_ACTION may be defined.
+#endif
+
+#if !defined(SCOPE_GUARD_CATCH_HANDLER)
+#  define SCOPE_GUARD_CATCH_HANDLER /* Suppress exception.*/
+#endif
+
+namespace scope_guard {
+
+namespace detail {
+
+#if defined(SCOPE_GUARD_SUPPRESS_THROW_ACTION) && (defined(__cpp_exceptions) || defined(__EXCEPTIONS) || (_HAS_EXCEPTIONS))
+#  define NEARGYE_NOEXCEPT(...) noexcept
+#  define NEARGYE_TRY           try {
+#  define NEARGYE_CATCH         } catch (...) { SCOPE_GUARD_CATCH_HANDLER }
+#else
+#  define NEARGYE_NOEXCEPT(...) noexcept(__VA_ARGS__)
+#  define NEARGYE_TRY
+#  define NEARGYE_CATCH
+#endif
+
+#define NEARGYE_MOV(...) static_cast<typename std::remove_reference<decltype(__VA_ARGS__)>::type&&>(__VA_ARGS__)
+#define NEARGYE_FWD(...) static_cast<decltype(__VA_ARGS__)&&>(__VA_ARGS__)
+
+// NEARGYE_NODISCARD encourages the compiler to issue a warning if the return value is discarded.
+#if !defined(NEARGYE_NODISCARD)
+#  if defined(__clang__)
+#    if (__clang_major__ * 10 + __clang_minor__) >= 39 && __cplusplus >= 201703L
+#      define NEARGYE_NODISCARD [[nodiscard]]
+#    else
+#      define NEARGYE_NODISCARD __attribute__((__warn_unused_result__))
+#    endif
+#  elif defined(__GNUC__)
+#    if __GNUC__ >= 7 && __cplusplus >= 201703L
+#      define NEARGYE_NODISCARD [[nodiscard]]
+#    else
+#      define NEARGYE_NODISCARD __attribute__((__warn_unused_result__))
+#    endif
+#  elif defined(_MSC_VER)
+#    if _MSC_VER >= 1911 && defined(_MSVC_LANG) && _MSVC_LANG >= 201703L
+#      define NEARGYE_NODISCARD [[nodiscard]]
+#    elif defined(_Check_return_)
+#      define NEARGYE_NODISCARD _Check_return_
+#    else
+#      define NEARGYE_NODISCARD
+#    endif
+#  else
+#    define NEARGYE_NODISCARD
+#  endif
+#endif
+
+#if defined(_MSC_VER) && _MSC_VER < 1900
+inline int uncaught_exceptions() noexcept {
+  return *(reinterpret_cast<int*>(static_cast<char*>(static_cast<void*>(_getptd())) + (sizeof(void*) == 8 ? 0x100 : 0x90)));
+}
+#elif (defined(__clang__) || defined(__GNUC__)) && __cplusplus < 201700L
+struct __cxa_eh_globals;
+extern "C" __cxa_eh_globals* __cxa_get_globals() noexcept;
+inline int uncaught_exceptions() noexcept {
+  return static_cast<int>(*(reinterpret_cast<unsigned int*>(static_cast<char*>(static_cast<void*>(__cxa_get_globals())) + sizeof(void*))));
+}
+#else
+inline int uncaught_exceptions() noexcept {
+  return std::uncaught_exceptions();
+}
+#endif
+
+class on_exit_policy {
+  bool execute_;
+
+ public:
+  explicit on_exit_policy(bool execute) noexcept : execute_{execute} {}
+
+  void dismiss() noexcept {
+    execute_ = false;
+  }
+
+  bool should_execute() const noexcept {
+    return execute_;
+  }
+};
+
+class on_fail_policy {
+  int ec_;
+
+ public:
+  explicit on_fail_policy(bool execute) noexcept : ec_{execute ? uncaught_exceptions() : -1} {}
+
+  void dismiss() noexcept {
+    ec_ = -1;
+  }
+
+  bool should_execute() const noexcept {
+    return ec_ != -1 && ec_ < uncaught_exceptions();
+  }
+};
+
+class on_success_policy {
+  int ec_;
+
+ public:
+  explicit on_success_policy(bool execute) noexcept : ec_{execute ? uncaught_exceptions() : -1} {}
+
+  void dismiss() noexcept {
+    ec_ = -1;
+  }
+
+  bool should_execute() const noexcept {
+    return ec_ != -1 && ec_ >= uncaught_exceptions();
+  }
+};
+
+template <typename T, typename = void>
+struct is_noarg_returns_void_action
+    : std::false_type {};
+
+template <typename T>
+struct is_noarg_returns_void_action<T, decltype((std::declval<T>())())>
+    : std::true_type {};
+
+template <typename T, bool = is_noarg_returns_void_action<T>::value>
+struct is_nothrow_invocable_action
+    : std::false_type {};
+
+template <typename T>
+struct is_nothrow_invocable_action<T, true>
+    : std::integral_constant<bool, noexcept((std::declval<T>())())> {};
+
+template <typename F, typename P>
+class scope_guard {
+  using A = typename std::decay<F>::type;
+
+  static_assert(is_noarg_returns_void_action<A>::value,
+                "scope_guard requires no-argument action, that returns void.");
+  static_assert(std::is_same<P, on_exit_policy>::value || std::is_same<P, on_fail_policy>::value || std::is_same<P, on_success_policy>::value,
+                "scope_guard requires on_exit_policy, on_fail_policy or on_success_policy.");
+#if defined(SCOPE_GUARD_NO_THROW_ACTION)
+    static_assert(is_nothrow_invocable_action<A>::value,
+                  "scope_guard requires noexcept invocable action.");
+#endif
+#if defined(SCOPE_GUARD_NO_THROW_CONSTRUCTIBLE)
+  static_assert(std::is_nothrow_move_constructible<A>::value,
+                "scope_guard requires nothrow constructible action.");
+#endif
+
+  P policy_;
+  A action_;
+
+  void* operator new(std::size_t) = delete;
+  void operator delete(void*) = delete;
+
+ public:
+  scope_guard() = delete;
+  scope_guard(const scope_guard&) = delete;
+  scope_guard& operator=(const scope_guard&) = delete;
+  scope_guard& operator=(scope_guard&&) = delete;
+
+  scope_guard(scope_guard&& other) noexcept(std::is_nothrow_move_constructible<A>::value)
+      : policy_{false},
+        action_{NEARGYE_MOV(other.action_)} {
+    policy_ = NEARGYE_MOV(other.policy_);
+    other.policy_.dismiss();
+  }
+
+  scope_guard(const A& action) = delete;
+  scope_guard(A& action) = delete;
+
+  explicit scope_guard(A&& action) noexcept(std::is_nothrow_move_constructible<A>::value)
+      : policy_{true},
+        action_{NEARGYE_MOV(action)} {}
+
+  void dismiss() noexcept {
+    policy_.dismiss();
+  }
+
+  ~scope_guard() NEARGYE_NOEXCEPT(is_nothrow_invocable_action<A>::value) {
+    if (policy_.should_execute()) {
+      NEARGYE_TRY
+        action_();
+      NEARGYE_CATCH
+    }
+  }
+};
+
+template <typename F>
+using scope_exit = scope_guard<F, on_exit_policy>;
+
+template <typename F, typename std::enable_if<is_noarg_returns_void_action<F>::value, int>::type = 0>
+NEARGYE_NODISCARD scope_exit<F> make_scope_exit(F&& action) noexcept(noexcept(scope_exit<F>{NEARGYE_FWD(action)})) {
+  return scope_exit<F>{NEARGYE_FWD(action)};
+}
+
+template <typename F>
+using scope_fail = scope_guard<F, on_fail_policy>;
+
+template <typename F, typename std::enable_if<is_noarg_returns_void_action<F>::value, int>::type = 0>
+NEARGYE_NODISCARD scope_fail<F> make_scope_fail(F&& action) noexcept(noexcept(scope_fail<F>{NEARGYE_FWD(action)})) {
+  return scope_fail<F>{NEARGYE_FWD(action)};
+}
+
+template <typename F>
+using scope_success = scope_guard<F, on_success_policy>;
+
+template <typename F, typename std::enable_if<is_noarg_returns_void_action<F>::value, int>::type = 0>
+NEARGYE_NODISCARD scope_success<F> make_scope_success(F&& action) noexcept(noexcept(scope_success<F>{NEARGYE_FWD(action)})) {
+  return scope_success<F>{NEARGYE_FWD(action)};
+}
+
+struct scope_exit_tag {};
+
+template <typename F, typename std::enable_if<is_noarg_returns_void_action<F>::value, int>::type = 0>
+scope_exit<F> operator<<(scope_exit_tag, F&& action) noexcept(noexcept(scope_exit<F>{NEARGYE_FWD(action)})) {
+  return scope_exit<F>{NEARGYE_FWD(action)};
+}
+
+struct scope_fail_tag {};
+
+template <typename F, typename std::enable_if<is_noarg_returns_void_action<F>::value, int>::type = 0>
+scope_fail<F> operator<<(scope_fail_tag, F&& action) noexcept(noexcept(scope_fail<F>{NEARGYE_FWD(action)})) {
+  return scope_fail<F>{NEARGYE_FWD(action)};
+}
+
+struct scope_success_tag {};
+
+template <typename F, typename std::enable_if<is_noarg_returns_void_action<F>::value, int>::type = 0>
+scope_success<F> operator<<(scope_success_tag, F&& action) noexcept(noexcept(scope_success<F>{NEARGYE_FWD(action)})) {
+  return scope_success<F>{NEARGYE_FWD(action)};
+}
+
+#undef NEARGYE_MOV
+#undef NEARGYE_FWD
+#undef NEARGYE_NOEXCEPT
+#undef NEARGYE_TRY
+#undef NEARGYE_CATCH
+#undef NEARGYE_NODISCARD
+
+} // namespace scope_guard::detail
+
+using detail::make_scope_exit;
+using detail::make_scope_fail;
+using detail::make_scope_success;
+
+} // namespace scope_guard
+
+// NEARGYE_MAYBE_UNUSED suppresses compiler warnings on unused entities, if any.
+#if !defined(NEARGYE_MAYBE_UNUSED)
+#  if defined(__clang__)
+#    if (__clang_major__ * 10 + __clang_minor__) >= 39 && __cplusplus >= 201703L
+#      define NEARGYE_MAYBE_UNUSED [[maybe_unused]]
+#    else
+#      define NEARGYE_MAYBE_UNUSED __attribute__((__unused__))
+#    endif
+#  elif defined(__GNUC__)
+#    if __GNUC__ >= 7 && __cplusplus >= 201703L
+#      define NEARGYE_MAYBE_UNUSED [[maybe_unused]]
+#    else
+#      define NEARGYE_MAYBE_UNUSED __attribute__((__unused__))
+#    endif
+#  elif defined(_MSC_VER)
+#    if _MSC_VER >= 1911 && defined(_MSVC_LANG) && _MSVC_LANG >= 201703L
+#      define NEARGYE_MAYBE_UNUSED [[maybe_unused]]
+#    else
+#      define NEARGYE_MAYBE_UNUSED __pragma(warning(suppress : 4100 4101 4189))
+#    endif
+#  else
+#    define NEARGYE_MAYBE_UNUSED
+#  endif
+#endif
+
+#if !defined(NEARGYE_STR_CONCAT)
+#  define NEARGYE_STR_CONCAT_(s1, s2) s1##s2
+#  define NEARGYE_STR_CONCAT(s1, s2)  NEARGYE_STR_CONCAT_(s1, s2)
+#endif
+
+#if !defined(NEARGYE_COUNTER)
+#  if defined(__COUNTER__)
+#    define NEARGYE_COUNTER __COUNTER__
+#  elif defined(__LINE__)
+#    define NEARGYE_COUNTER __LINE__
+#  endif
+#endif
+
+#if defined(SCOPE_GUARD_NO_THROW_ACTION)
+#  define NEARGYE_MAKE_SCOPE_GUARD_ACTION [&]() noexcept -> void
+#else
+#  define NEARGYE_MAKE_SCOPE_GUARD_ACTION [&]() -> void
+#endif
+
+#define NEARGYE_MAKE_SCOPE_EXIT    ::scope_guard::detail::scope_exit_tag{}    << NEARGYE_MAKE_SCOPE_GUARD_ACTION
+#define NEARGYE_MAKE_SCOPE_FAIL    ::scope_guard::detail::scope_fail_tag{}    << NEARGYE_MAKE_SCOPE_GUARD_ACTION
+#define NEARGYE_MAKE_SCOPE_SUCCESS ::scope_guard::detail::scope_success_tag{} << NEARGYE_MAKE_SCOPE_GUARD_ACTION
+
+#define NEARGYE_SCOPE_GUARD_WITH_(g, i) for (int i = 1; i--; g)
+#define NEARGYE_SCOPE_GUARD_WITH(g)     NEARGYE_SCOPE_GUARD_WITH_(g, NEARGYE_STR_CONCAT(NEARGYE_INTERNAL_OBJECT_, NEARGYE_COUNTER))
+
+// SCOPE_EXIT executing action on scope exit.
+#define MAKE_SCOPE_EXIT(name)  auto name = NEARGYE_MAKE_SCOPE_EXIT
+#define SCOPE_EXIT             NEARGYE_MAYBE_UNUSED const MAKE_SCOPE_EXIT(NEARGYE_STR_CONCAT(NEARGYE_SCOPE_EXIT_, NEARGYE_COUNTER))
+#define WITH_SCOPE_EXIT(guard) NEARGYE_SCOPE_GUARD_WITH(NEARGYE_MAKE_SCOPE_EXIT{ guard })
+
+// SCOPE_FAIL executing action on scope exit when an exception has been thrown before scope exit.
+#define MAKE_SCOPE_FAIL(name)  auto name = NEARGYE_MAKE_SCOPE_FAIL
+#define SCOPE_FAIL             NEARGYE_MAYBE_UNUSED const MAKE_SCOPE_FAIL(NEARGYE_STR_CONCAT(NEARGYE_SCOPE_FAIL_, NEARGYE_COUNTER))
+#define WITH_SCOPE_FAIL(guard) NEARGYE_SCOPE_GUARD_WITH(NEARGYE_MAKE_SCOPE_FAIL{ guard })
+
+// SCOPE_SUCCESS executing action on scope exit when no exceptions have been thrown before scope exit.
+#define MAKE_SCOPE_SUCCESS(name)  auto name = NEARGYE_MAKE_SCOPE_SUCCESS
+#define SCOPE_SUCCESS             NEARGYE_MAYBE_UNUSED const MAKE_SCOPE_SUCCESS(NEARGYE_STR_CONCAT(NEARGYE_SCOPE_SUCCESS_, NEARGYE_COUNTER))
+#define WITH_SCOPE_SUCCESS(guard) NEARGYE_SCOPE_GUARD_WITH(NEARGYE_MAKE_SCOPE_SUCCESS{ guard })
+
+// DEFER executing action on scope exit.
+#define MAKE_DEFER(name)  MAKE_SCOPE_EXIT(name)
+#define DEFER             SCOPE_EXIT
+#define WITH_DEFER(guard) WITH_SCOPE_EXIT(guard)
+
+#endif // NEARGYE_SCOPE_GUARD_HPP

libfuse/lib/thread_pool.hpp

@@ -1,124 +0,0 @@
-#pragma once
-
-#include "unbounded_queue.hpp"
-
-#include <tuple>
-#include <atomic>
-#include <vector>
-#include <thread>
-#include <memory>
-#include <future>
-#include <utility>
-#include <functional>
-#include <type_traits>
-
-
-class ThreadPool
-{
-public:
-  explicit
-  ThreadPool(const std::size_t thread_count_ = std::thread::hardware_concurrency())
-    : _queues(thread_count_),
-      _count(thread_count_)
-  {
-    auto worker = [this](std::size_t i)
-    {
-      while(true)
-        {
-          Proc f;
-
-          for(std::size_t n = 0; n < (_count * K); ++n)
-            {
-              if(_queues[(i + n) % _count].try_pop(f))
-                break;
-            }
-
-          if(!f && !_queues[i].pop(f))
-            break;
-
-          f();
-        }
-    };
-
-    _threads.reserve(thread_count_);
-    for(std::size_t i = 0; i < thread_count_; ++i)
-      _threads.emplace_back(worker, i);
-  }
-
-  ~ThreadPool()
-  {
-    for(auto& queue : _queues)
-      queue.unblock();
-    for(auto& thread : _threads)
-      thread.join();
-  }
-
-  template<typename F>
-  void
-  enqueue_work(F&& f_)
-  {
-    auto i = _index++;
-
-    for(std::size_t n = 0; n < (_count * K); ++n)
-      {
-        if(_queues[(i + n) % _count].try_push(f_))
-          return;
-      }
-
-    _queues[i % _count].push(std::move(f_));
-  }
-
-  template<typename F>
-  [[nodiscard]]
-  std::future<typename std::result_of<F()>::type>
-  enqueue_task(F&& f_)
-  {
-    using TaskReturnType = typename std::result_of<F()>::type;
-    using Promise        = std::promise<TaskReturnType>;
-
-    auto i       = _index++;
-    auto promise = std::make_shared<Promise>();
-    auto future  = promise->get_future();
-    auto work    = [=]() {
-      auto rv = f_();
-      promise->set_value(rv);
-    };
-
-    for(std::size_t n = 0; n < (_count * K); ++n)
-      {
-        if(_queues[(i + n) % _count].try_push(work))
-          return future;
-      }
-
-    _queues[i % _count].push(std::move(work));
-
-    return future;
-  }
-
-public:
-  std::vector<pthread_t>
-  threads()
-  {
-    std::vector<pthread_t> rv;
-
-    for(auto &thread : _threads)
-      rv.push_back(thread.native_handle());
-
-    return rv;
-  }
-
-private:
-  using Proc   = std::function<void(void)>;
-  using Queue  = UnboundedQueue<Proc>;
-  using Queues = std::vector<Queue>;
-  Queues _queues;
-
-private:
-  std::vector<std::thread> _threads;
-
-private:
-  const std::size_t _count;
-  std::atomic_uint _index;
-
-  static const unsigned int K = 2;
-};

libfuse/lib/unbounded_queue.hpp

@@ -1,161 +0,0 @@
-#pragma once
-
-#include <condition_variable>
-#include <mutex>
-#include <queue>
-#include <utility>
-
-
-template<typename T>
-class UnboundedQueue
-{
-public:
-  explicit
-  UnboundedQueue(bool block_ = true)
-    : _block(block_)
-  {
-  }
-
-  void
-  push(const T& item_)
-  {
-    {
-      std::lock_guard<std::mutex> guard(_queue_lock);
-      _queue.push(item_);
-    }
-    _condition.notify_one();
-  }
-
-  void
-  push(T&& item_)
-  {
-    {
-      std::lock_guard<std::mutex> guard(_queue_lock);
-      _queue.push(std::move(item_));
-    }
-
-    _condition.notify_one();
-  }
-
-  template<typename... Args>
-  void
-  emplace(Args&&... args_)
-  {
-    {
-      std::lock_guard<std::mutex> guard(_queue_lock);
-      _queue.emplace(std::forward<Args>(args_)...);
-    }
-
-    _condition.notify_one();
-  }
-
-  bool
-  try_push(const T& item_)
-  {
-    {
-      std::unique_lock<std::mutex> lock(_queue_lock, std::try_to_lock);
-      if(!lock)
-        return false;
-      _queue.push(item_);
-    }
-
-    _condition.notify_one();
-
-    return true;
-  }
-
-  bool
-  try_push(T&& item_)
-  {
-    {
-      std::unique_lock<std::mutex> lock(_queue_lock, std::try_to_lock);
-      if(!lock)
-        return false;
-      _queue.push(std::move(item_));
-    }
-
-    _condition.notify_one();
-
-    return true;
-  }
-
-  //TODO: push multiple T at once
-
-  bool
-  pop(T& item_)
-  {
-    std::unique_lock<std::mutex> guard(_queue_lock);
-
-    _condition.wait(guard, [&]() { return !_queue.empty() || !_block; });
-    if(_queue.empty())
-      return false;
-
-    item_ = std::move(_queue.front());
-    _queue.pop();
-
-    return true;
-  }
-
-  bool
-  try_pop(T& item_)
-  {
-    std::unique_lock<std::mutex> lock(_queue_lock, std::try_to_lock);
-    if(!lock || _queue.empty())
-      return false;
-
-    item_ = std::move(_queue.front());
-    _queue.pop();
-
-    return true;
-  }
-
-  std::size_t
-  size() const
-  {
-    std::lock_guard<std::mutex> guard(_queue_lock);
-
-    return _queue.size();
-  }
-
-  bool
-  empty() const
-  {
-    std::lock_guard<std::mutex> guard(_queue_lock);
-
-    return _queue.empty();
-  }
-
-  void
-  block()
-  {
-    std::lock_guard<std::mutex> guard(_queue_lock);
-    _block = true;
-  }
-
-  void
-  unblock()
-  {
-    {
-      std::lock_guard<std::mutex> guard(_queue_lock);
-      _block = false;
-    }
-
-    _condition.notify_all();
-  }
-
-  bool
-  blocking() const
-  {
-    std::lock_guard<std::mutex> guard(_queue_lock);
-
-    return _block;
-  }
-
-private:
-  mutable std::mutex _queue_lock;
-
-private:
-  bool _block;
-  std::queue<T> _queue;
-  std::condition_variable _condition;
-};

man/mergerfs.1

@@ -214,6 +214,10 @@ This means files, when renamed or linked, will stay on the same
 filesystem.
 (default: false)
 .IP \[bu] 2
+\f[B]export-support=BOOL\f[R]: Sets a low-level FUSE feature intended to
+indicate the filesystem can support being exported via NFS.
+(default: true)
+.IP \[bu] 2
 \f[B]security_capability=BOOL\f[R]: If false return ENOATTR when xattr
 security.capability is queried.
 (default: true)
@@ -311,9 +315,21 @@ reading FUSE messages which are dispatched to process threads.
 -1 means disabled otherwise acts like \f[C]read-thread-count\f[R].
 (default: -1)
 .IP \[bu] 2
+\f[B]process-thread-queue-depth=UINT\f[R]: Sets the number of requests
+any single process thread can have queued up at one time.
+Meaning the total memory usage of the queues is queue depth multiplied
+by the number of process threads plus read thread count.
+0 sets the depth to the same as the process thread count.
+(default: 0)
+.IP \[bu] 2
 \f[B]pin-threads=STR\f[R]: Selects a strategy to pin threads to CPUs
 (default: unset)
 .IP \[bu] 2
+\f[B]flush-on-close=never|always|opened-for-write\f[R]: Flush data cache
+on file close.
+Mostly for when writeback is enabled or merging network filesystems.
+(default: opened-for-write)
+.IP \[bu] 2
 \f[B]scheduling-priority=INT\f[R]: Set mergerfs\[cq] scheduling
 priority.
 Valid values range from -20 to 19.
@@ -330,6 +346,11 @@ policy.
 See below for the list of value types.
 Example: \f[B]func.getattr=newest\f[R]
 .IP \[bu] 2
+\f[B]func.readdir=seq|cosr|cor|cosr:INT|cor:INT\f[R]: Sets
+\f[C]readdir\f[R] policy.
+INT value sets the number of threads to use for concurrency.
+(default: seq)
+.IP \[bu] 2
 \f[B]category.action=POLICY\f[R]: Sets policy of all FUSE functions in
 the action category.
 (default: epall)
@@ -377,6 +398,12 @@ to enable page caching for when \f[C]cache.files=per-process\f[R].
 \f[B]cache.readdir=BOOL\f[R]: Cache readdir (if supported by kernel)
 (default: false)
 .IP \[bu] 2
+\f[B]parallel-direct-writes=BOOL\f[R]: Allow the kernel to dispatch
+multiple, parallel (non-extending) write requests for files opened with
+\f[C]cache.files=per-process\f[R] (if the process is not in
+\f[C]process-names\f[R]) or \f[C]cache.files=off\f[R].
+(This requires kernel support, and was added in v6.2)
+.IP \[bu] 2
 \f[B]direct_io\f[R]: deprecated - Bypass page cache.
 Use \f[C]cache.files=off\f[R] instead.
 (default: false)
@@ -403,8 +430,8 @@ Use \f[C]async_read=false\f[R] instead.
 .IP \[bu] 2
 \f[B]splice_move\f[R]: deprecated - Does nothing.
 .IP \[bu] 2
-\f[B]allow_other\f[R]: deprecated - mergerfs always sets this FUSE
-option as normal permissions can be used to limit access.
+\f[B]allow_other\f[R]: deprecated - mergerfs v2.35.0 and newer sets this
+FUSE option automatically if running as root.
 .IP \[bu] 2
 \f[B]use_ino\f[R]: deprecated - mergerfs should always control inode
 calculation so this is enabled all the time.
@@ -524,7 +551,7 @@ Most software does not to care what the values are but those that do
 often break if a value changes unexpectedly.
 The tool \f[C]find\f[R] will abort a directory walk if it sees a
 directory inode change.
-NFS will return stale handle errors if the inode changes out of band.
+NFS can return stale handle errors if the inode changes out of band.
 File dedup tools will usually leverage device ids and inodes as a
 shortcut in searching for duplicate files and would resort to full file
 comparisons should it find different inode values.
@@ -812,8 +839,28 @@ Even though it\[cq]s a more niche situation this hack breaks normal
 security and behavior and as such is \f[C]off\f[R] by default.
 If set to \f[C]git\f[R] it will only perform the hack when the path in
 question includes \f[C]/.git/\f[R].
-\f[C]all\f[R] will result it applying anytime a readonly file which is
+\f[C]all\f[R] will result it applying anytime a read-only file which is
 empty is opened for writing.
+.SS export-support
+.PP
+In theory this flag should not be exposed to the end user.
+It is a low-level FUSE flag which indicates whether or not the kernel
+can send certain kinds of messages to it for the purposes of using with
+NFS.
+mergerfs does support these messages but due to a possible bug in the
+Linux kernel this option needs to be configurable.
+As it turns out at least certain versions of NFS can still work when
+disabled and no longer triggers the bug.
+.PP
+While it may be safe to default this setting to \f[C]false\f[R] in an
+abundance of caution it is being left enabled by default.
+.PP
+Given that this flag is set when the FUSE connection is first initiated
+it is not possible to change during run time.
+.PP
+See Kernel Issues &
+Bugs (https://github.com/trapexit/mergerfs/wiki/Kernel-Issues-&-Bugs)
+for more details.
 .SH FUNCTIONS, CATEGORIES and POLICIES
 .PP
 The POSIX filesystem API is made up of a number of functions.
@@ -833,8 +880,6 @@ provide the file handle when a client calls \f[C]fgetattr\f[R],
 \f[C]fchown\f[R], \f[C]fchmod\f[R], \f[C]futimens\f[R],
 \f[C]ftruncate\f[R], etc.
 This means it will call the regular, path based, versions.
-\f[C]readdir\f[R] has no real need for a policy given the purpose is
-merely to return a list of entries in a directory.
 \f[C]statfs\f[R]\[cq]s behavior can be modified via other options.
 .PP
 When using policies which are based on a branch\[cq]s available space
@@ -845,8 +890,8 @@ calculations.
 The reason is that it doesn\[cq]t really work for non-path preserving
 policies and can lead to non-obvious behaviors.
 .PP
-NOTE: While any policy can be assigned to a function or category though
-some may not be very useful in practice.
+NOTE: While any policy can be assigned to a function or category, some
+may not be very useful in practice.
 For instance: \f[B]rand\f[R] (random) may be useful for file creation
 (create) but could lead to very odd behavior if used for \f[C]chmod\f[R]
 if there were more than one copy of the file.
@@ -891,8 +936,7 @@ In cases where something may be searched for (such as a path to clone)
 .SS Policies
 .PP
 A policy is the algorithm used to choose a branch or branches for a
-function to work on.
-Think of them as ways to filter and sort branches.
+function to work on or generally how the function behaves.
 .PP
 Any function in the \f[C]create\f[R] category will clone the relative
 path if needed.
@@ -901,12 +945,12 @@ have special requirements or behaviors which you can read more about
 below.
 .SS Filtering
 .PP
-Policies basically search branches and create a list of files / paths
-for functions to work on.
+Most policies basically search branches and create a list of files /
+paths for functions to work on.
 The policy is responsible for filtering and sorting the branches.
 Filters include \f[B]minfreespace\f[R], whether or not a branch is
 mounted read-only, and the branch tagging (RO,NC,RW).
-These filters are applied across all policies unless otherwise noted.
+These filters are applied across most policies.
 .IP \[bu] 2
 No \f[B]search\f[R] function policies filter.
 .IP \[bu] 2
@@ -926,6 +970,13 @@ Typically \f[B]EROFS\f[R] (read-only filesystem) or \f[B]ENOSPC\f[R] (no
 space left on device) depending on the most recent reason for filtering
 a branch.
 \f[B]ENOENT\f[R] will be returned if no eligible branch is found.
+.PP
+If \f[B]create\f[R], \f[B]mkdir\f[R], \f[B]mknod\f[R], or
+\f[B]symlink\f[R] fail with \f[C]EROFS\f[R] or other fundimental errors
+then mergerfs will mark any branch found to be read-only as such (IE
+will set the mode \f[C]RO\f[R]) and will rerun the policy and try again.
+This is mostly for \f[C]ext4\f[R] filesystems that can suddenly become
+read-only when it encounters an error.
 .SS Path Preservation
 .PP
 Policies, as described below, are of two basic classifications.
@@ -1116,6 +1167,63 @@ T}@T{
 ff
 T}
 .TE
+.SS func.readdir
+.PP
+examples: \f[C]func.readdir=seq\f[R], \f[C]func.readdir=cor:4\f[R]
+.PP
+\f[C]readdir\f[R] has policies to control how it manages reading
+directory content.
+.PP
+.TS
+tab(@);
+lw(26.7n) lw(43.3n).
+T{
+Policy
+T}@T{
+Description
+T}
+_
+T{
+seq
+T}@T{
+\[lq]sequential\[rq] : Iterate over branches in the order defined.
+This is the default and traditional behavior found prior to the readdir
+policy introduction.
+T}
+T{
+cosr
+T}@T{
+\[lq]concurrent open, sequential read\[rq] : Concurrently open branch
+directories using a thread pool and process them in order of definition.
+This keeps memory and CPU usage low while also reducing the time spent
+waiting on branches to respond.
+Number of threads defaults to the number of logical cores.
+Can be overwritten via the syntax \f[C]func.readdir=cosr:N\f[R] where
+\f[C]N\f[R] is the number of threads.
+T}
+T{
+cor
+T}@T{
+\[lq]concurrent open and read\[rq] : Concurrently open branch
+directories and immediately start reading their contents using a thread
+pool.
+This will result in slightly higher memory and CPU usage but reduced
+latency.
+Particularly when using higher latency / slower speed network filesystem
+branches.
+Unlike \f[C]seq\f[R] and \f[C]cosr\f[R] the order of files could change
+due the async nature of the thread pool.
+Number of threads defaults to the number of logical cores.
+Can be overwritten via the syntax \f[C]func.readdir=cor:N\f[R] where
+\f[C]N\f[R] is the number of threads.
+T}
+.TE
+.PP
+Keep in mind that \f[C]readdir\f[R] mostly just provides a list of file
+names in a directory and possibly some basic metadata about said files.
+To know details about the files, as one would see from commands like
+\f[C]find\f[R] or \f[C]ls\f[R], it is required to call \f[C]stat\f[R] on
+the file which is controlled by \f[C]fuse.getattr\f[R].
 .SS ioctl
 .PP
 When \f[C]ioctl\f[R] is used with an open file then it will use the file
@@ -1228,19 +1336,6 @@ The above behavior will help minimize the likelihood of EXDEV being
 returned but it will still be possible.
 .PP
 \f[B]link\f[R] uses the same strategy but without the removals.
-.SS readdir
-.PP
-readdir (http://linux.die.net/man/3/readdir) is different from all other
-filesystem functions.
-While it could have its own set of policies to tweak its behavior at
-this time it provides a simple union of files and directories found.
-Remember that any action or information queried about these files and
-directories come from the respective function.
-For instance: an \f[B]ls\f[R] is a \f[B]readdir\f[R] and for each
-file/directory returned \f[B]getattr\f[R] is called.
-Meaning the policy of \f[B]getattr\f[R] is responsible for choosing the
-file/directory which is the source of the metadata you see in an
-\f[B]ls\f[R].
 .SS statfs / statvfs
 .PP
 statvfs (http://linux.die.net/man/2/statvfs) normalizes the source
@@ -1255,6 +1350,24 @@ be included when checking the mount\[cq]s stats.
 .PP
 The options \f[C]statfs\f[R] and \f[C]statfs_ignore\f[R] can be used to
 modify \f[C]statfs\f[R] behavior.
+.SS flush-on-close
+.PP
+https://lkml.kernel.org/linux-fsdevel/20211024132607.1636952-1-amir73il\[at]gmail.com/T/
+.PP
+By default FUSE would issue a flush before the release of a file
+descriptor.
+This was considered a bit aggressive and a feature added to give the
+FUSE server the ability to choose when that happens.
+.PP
+Options: * always * never * opened-for-write
+.PP
+For now it defaults to \[lq]opened-for-write\[rq] which is less
+aggressive than the behavior before this feature was added.
+It should not be a problem because the flush is really only relevant
+when a file is written to.
+Given flush is irrelevant for many filesystems in the future a branch
+specific flag may be added so only files opened on a specific branch
+would be flushed on close.
 .SH ERROR HANDLING
 .PP
 POSIX filesystem functions offer a single return code meaning that there
@@ -1476,7 +1589,8 @@ Before mounting over top the mount point with the new instance of
 mergerfs issue: \f[C]umount -l <mergerfs_mountpoint>\f[R].
 Or you can let mergerfs do it by setting the option
 \f[C]lazy-umount-mountpoint=true\f[R].
-.SH RUNTIME CONFIG
+.SH RUNTIME INTERFACES
+.SS RUNTIME CONFIG
 .SS .mergerfs pseudo file
 .IP
 .nf
@@ -1592,7 +1706,148 @@ given the getattr policy
 .IP \[bu] 2
 \f[B]user.mergerfs.allpaths\f[R]: a NUL (`\[rs]0') separated list of
 full paths to all files found
+.SS SIGNALS
+.IP \[bu] 2
+USR1: This will cause mergerfs to send invalidation notifications to the
+kernel for all files.
+This will cause all unused files to be released from memory.
+.IP \[bu] 2
+USR2: Trigger a general cleanup of currently unused memory.
+A more thorough version of what happens every \[ti]15 minutes.
+.SS IOCTLS
+.PP
+Found in \f[C]fuse_ioctl.cpp\f[R]:
+.IP
+.nf
+\f[C]
+typedef char IOCTL_BUF[4096];
+#define IOCTL_APP_TYPE  0xDF
+#define IOCTL_FILE_INFO            _IOWR(IOCTL_APP_TYPE,0,IOCTL_BUF)
+#define IOCTL_GC                   _IO(IOCTL_APP_TYPE,1)
+#define IOCTL_GC1                  _IO(IOCTL_APP_TYPE,2)
+#define IOCTL_INVALIDATE_ALL_NODES _IO(IOCTL_APP_TYPE,3)
+\f[R]
+.fi
+.IP \[bu] 2
+IOCTL_FILE_INFO: Same as the \[lq]file / directory xattrs\[rq] mentioned
+above.
+Use a buffer size of 4096 bytes.
+Pass in a string of \[lq]basepath\[rq], \[lq]relpath\[rq],
+\[lq]fullpath\[rq], or \[lq]allpaths\[rq].
+Receive details in same buffer.
+.IP \[bu] 2
+IOCTL_GC: Triggers a thorough garbage collection of excess memory.
+Same as SIGUSR2.
+.IP \[bu] 2
+IOCTL_GC1: Triggers a simple garbage collection of excess memory.
+Same as what happens every 15 minutes normally.
+.IP \[bu] 2
+IOCTL_INVALIDATE_ALL_NODES: Same as SIGUSR1.
+Send invalidation notifications to the kernel for all files causing
+unused files to be released from memory.
 .SH TOOLING
+.SS preload.so
+.PP
+EXPERIMENTAL
+.PP
+For some time there has been work to enable passthrough IO in FUSE.
+Passthrough IO would allow for near native performance with regards to
+reads and writes (at the expense of certain mergerfs features.) However,
+there have been several complications which have kept the feature from
+making it into the mainline Linux kernel.
+Until that feature is available there are two methods to provide similar
+functionality.
+One method is using the LD_PRELOAD feature of the dynamic linker.
+The other leveraging ptrace to intercept syscalls.
+Each has their disadvantages.
+At the moment only a preload based tool is available.
+A ptrace based tool may be developed later if there is a need.
+.PP
+\f[C]/usr/lib/mergerfs/preload.so\f[R]
+.PP
+This preloadable
+library (https://man7.org/linux/man-pages/man8/ld.so.8.html#ENVIRONMENT)
+overrides the creation and opening of files in order to simulate
+passthrough file IO.
+It catches the open/creat/fopen calls, has mergerfs do the call, queries
+mergerfs for the branch the file exists on, reopens the file on the
+underlying filesystem and returns that instead.
+Meaning that you will get native read/write performance because mergerfs
+is no longer part of the workflow.
+Keep in mind that this also means certain mergerfs features that work by
+interrupting the read/write workflow, such as \f[C]moveonenospc\f[R],
+will no longer work.
+.PP
+Also understand that this will only work on dynamically linked software.
+Anything statically compiled will not work.
+Many GoLang and Rust apps are statically compiled.
+.PP
+The library will not interfere with non-mergerfs filesystems.
+The library is written to always fallback to returning the mergerfs
+opened file on error.
+.PP
+While the library was written to account for a number of edgecases there
+could be some yet accounted for so please report any oddities.
+.PP
+Thank you to nohajc (https://github.com/nohajc/mergerfs-io-passthrough)
+for prototyping the idea.
+.SS general usage
+.IP
+.nf
+\f[C]
+LD_PRELOAD=/usr/lib/mergerfs/preload.so touch /mnt/mergerfs/filename
+\f[R]
+.fi
+.SS Docker usage
+.PP
+Assume \f[C]/mnt/fs0\f[R] and \f[C]/mnt/fs1\f[R] are pooled with
+mergerfs at \f[C]/media\f[R].
+.PP
+All mergerfs branch paths \f[I]must\f[R] be bind mounted into the
+container at the same path as found on the host so the preload library
+can see them.
+.IP
+.nf
+\f[C]
+docker run \[rs]
+  -e LD_PRELOAD=/usr/lib/mergerfs/preload.so \[rs]
+  -v /usr/lib/mergerfs/preload.so:/usr/lib/mergerfs/preload.so:ro \[rs]
+  -v /media:/data \[rs]
+  -v /mnt:/mnt \[rs]
+  ubuntu:latest \[rs]
+  bash
+\f[R]
+.fi
+.PP
+or more explicitly
+.IP
+.nf
+\f[C]
+docker run \[rs]
+  -e LD_PRELOAD=/usr/lib/mergerfs/preload.so \[rs]
+  -v /usr/lib/mergerfs/preload.so:/usr/lib/mergerfs/preload.so:ro \[rs]
+  -v /media:/data \[rs]
+  -v /mnt/fs0:/mnt/fs0 \[rs]
+  -v /mnt/fs1:/mnt/fs1 \[rs]
+  ubuntu:latest \[rs]
+  bash
+\f[R]
+.fi
+.SS systemd unit
+.PP
+Use the \f[C]Environment\f[R] option to set the LD_PRELOAD variable.
+.IP \[bu] 2
+https://www.freedesktop.org/software/systemd/man/latest/systemd.service.html#Command%20lines
+.IP \[bu] 2
+https://serverfault.com/questions/413397/how-to-set-environment-variable-in-systemd-service
+.IP
+.nf
+\f[C]
+[Service]
+Environment=LD_PRELOAD=/usr/lib/mergerfs/preload.so
+\f[R]
+.fi
+.SS Misc
 .IP \[bu] 2
 https://github.com/trapexit/mergerfs-tools
 .RS 2
@@ -1649,9 +1904,12 @@ size are unchanged since previous open.
 cache.files=libfuse: follow traditional libfuse \f[C]direct_io\f[R],
 \f[C]kernel_cache\f[R], and \f[C]auto_cache\f[R] arguments.
 .IP \[bu] 2
-cache.files=per-process: Enable page caching only for processes which
-`comm' name matches one of the values defined in
+cache.files=per-process: Enable page caching (equivalent to
+\f[C]cache.files=partial\f[R]) only for processes whose `comm' name
+matches one of the values defined in
 \f[C]cache.files.process-names\f[R].
+If the name does not match the file open is equivalent to
+\f[C]cache.files=off\f[R].
 .PP
 FUSE, which mergerfs uses, offers a number of page caching modes.
 mergerfs tries to simplify their use via the \f[C]cache.files\f[R]
@@ -1790,7 +2048,7 @@ The placing of usually smaller, faster storage as a transparent cache to
 larger, slower storage.
 NVMe, SSD, Optane in front of traditional HDDs for instance.
 .PP
-MergerFS does not natively support any sort of tiered caching.
+mergerfs does not natively support any sort of tiered caching.
 Most users have no use for such a feature and its inclusion would
 complicate the code.
 However, there are a few situations where a cache filesystem could help
@@ -1902,6 +2160,8 @@ increase cache timeouts \f[C]cache.attr\f[R], \f[C]cache.entry\f[R],
 .IP \[bu] 2
 enable (or disable) page caching (\f[C]cache.files\f[R])
 .IP \[bu] 2
+enable \f[C]parallel-direct-writes\f[R]
+.IP \[bu] 2
 enable \f[C]cache.writeback\f[R]
 .IP \[bu] 2
 enable \f[C]cache.statfs\f[R]
@@ -2139,14 +2399,9 @@ Use \f[C]cache.files=off\f[R] and/or \f[C]dropcacheonclose=true\f[R].
 See the section on page caching.
 .SS NFS clients returning ESTALE / Stale file handle
 .PP
-NFS does not like out of band changes.
-That is especially true of inode values.
-.PP
-Be sure to use the following options:
-.IP \[bu] 2
-noforget
-.IP \[bu] 2
-inodecalc=path-hash
+NFS generally does not like out of band changes.
+Take a look at the section on NFS in the #remote-filesystems for more
+details.
 .SS rtorrent fails with ENODEV (No such device)
 .PP
 Be sure to set \f[C]cache.files=partial|full|auto-full|per-processe\f[R]
@@ -2303,6 +2558,139 @@ There might be a hack to work around this (make mergerfs read the
 would be limited to Linux and the /etc/group DB.
 Preferably users would mount in the host group file into the containers
 or use a standard shared user & groups technology like NIS or LDAP.
+.SH Remote Filesystems
+.PP
+Many users ask about compatibility with remote filesystems.
+This section is to describe any known issues or quirks when using
+mergerfs with common remote filesystems.
+.PP
+Keep in mind that, like with caching, it is not a good idea to change
+the contents of the remote filesystem
+out-of-band (https://en.wikipedia.org/wiki/Out-of-band).
+Meaning that you really shouldn\[cq]t change the contents of the
+underlying filesystems or mergerfs on the server hosting the remote
+filesystem.
+Doing so can lead to weird behavior, inconsistency, errors, and even
+data corruption should multiple programs try to write or read the same
+data at the same time.
+This isn\[cq]t to say you can\[cq]t do it or that data corruption is
+likely but it \f[I]could\f[R] happen.
+It is better to always use the remote filesystem.
+Even on the machine serving it.
+.SS NFS
+.PP
+NFS (https://en.wikipedia.org/wiki/Network_File_System) is a common
+remote filesystem on Unix/POSIX systems.
+Due to how NFS works there are some settings which need to be set in
+order for mergerfs to work with it.
+.PP
+It should be noted that NFS and FUSE (the technology mergerfs uses) do
+not work perfectly with one another due to certain design choices in
+FUSE (and mergerfs.) Due to these issues it is generally recommended to
+use SMB when possible till situations change.
+That said issues should still be reported.
+NFS is not really recommended but it isn\[cq]t unsupported.
+.PP
+mergerfs settings: * noforget * inodecalc=path-hash *
+export-support=false (only available in v2.40.0 and above)
+.PP
+NFS export settings: * fsid=UUID * no_root_squash
+.PP
+\f[C]noforget\f[R] is needed because NFS uses the
+\f[C]name_to_handle_at\f[R] and \f[C]open_by_handle_at\f[R] functions
+which allow a program to keep a reference to a file without technically
+having it open in the typical sense.
+The problem is that FUSE has no way to know that NFS has a handle that
+it will later use to open the file again.
+As a result it is possible for the kernel to tell mergerfs to forget
+about the node and should NFS ever ask for that node\[cq]s details in
+the future it would have nothing to respond with.
+Keeping nodes around forever is not ideal but at the moment the only way
+to manage the situation.
+.PP
+\f[C]inodecalc=path-hash\f[R] is needed because NFS is sensitive to
+out-of-band changes.
+FUSE doesn\[cq]t care if a file\[cq]s inode value changes but NFS, being
+stateful, does.
+So if you used the default inode calculation algorithm then it is
+possible that if you changed a file or updated a directory the file
+mergerfs will use will be on a different branch and therefore the inode
+would change.
+This isn\[cq]t an ideal solution and others are being considered but it
+works for most situations.
+It might be possible to leave the default value of \f[C]hybrid-hash\f[R]
+if \f[C]export-support=false\f[R] but it hasn\[cq]t been fully tested
+yet.
+.PP
+\f[C]export-support=false\f[R] is a low-level FUSE option that is needed
+as a workaround to a Linux kernel bug.
+Technically this option should be set to \f[C]true\f[R] when expecting
+to use mergerfs with NFS but it turns out that at least some versions of
+NFS work when not enabled.
+At the moment it is unclear if this has any negative side effects but
+when disabled NFS appears to work alright and the kernel no longer sends
+invalid requests.
+When the issue is resolved in the kernel these docs will be updated with
+appropriate details.
+.PP
+Also see Kernel Issues &
+Bugs (https://github.com/trapexit/mergerfs/wiki/Kernel-Issues-&-Bugs)
+for more details.
+.PP
+\f[C]fsid=UUID\f[R] is needed because FUSE filesystems don\[cq]t have
+different \f[C]st_dev\f[R] values which can cause issues when exporting.
+The easiest thing to do is set each mergerfs export \f[C]fsid\f[R] to
+some random value.
+An easy way to generate a random value is to use the command line tool
+\f[C]uuidgen\f[R] or through a website such as
+uuidgenerator.net (https://www.uuidgenerator.net/).
+.PP
+\f[C]no_root_squash\f[R] is not strictly necessary but can lead to
+confusing permission and ownership issues.
+.SS SMB / CIFS
+.PP
+SMB (https://en.wikipedia.org/wiki/Server_Message_Block) is a protocol
+most used by Microsoft Windows systems to share file shares, printers,
+etc.
+However, due to the popularity for Windows, it is also supported on many
+other platforms including Linux.
+The most popular way of supporting SMB on Linux is via the software
+Samba.
+.PP
+Samba (https://en.wikipedia.org/wiki/Samba_(software)), and other ways
+of serving Linux filesystems, via SMB should work fine with mergerfs.
+The services do not tend to use the same technologies which NFS uses and
+therefore don\[cq]t have the same issues.
+There should not be an special settings required to use mergerfs with
+Samba.
+However, CIFSD (https://en.wikipedia.org/wiki/CIFSD) and other programs
+have not been extensively tested.
+If you use mergerfs with CIFSD or other SMB servers please submit your
+experiences so these docs can be updated.
+.SS SSHFS
+.PP
+SSHFS (https://en.wikipedia.org/wiki/SSHFS) is a FUSE filesystem
+leveraging SSH as the connection and transport layer.
+While often simpler to setup when compared to NFS or Samba the
+performance can be lacking and the project is very much in maintenance
+mode.
+.PP
+There are no known issues using sshfs with mergerfs.
+You may want to use the following arguments to improve performance but
+your millage may vary.
+.IP \[bu] 2
+\f[C]-o Ciphers=arcfour\f[R]
+.IP \[bu] 2
+\f[C]-o Compression=no\f[R]
+.PP
+More info can be found
+here (https://ideatrash.net/2016/08/odds-and-ends-optimizing-sshfs-moving.html).
+.SS Other
+.PP
+There are other remote filesystems but none popularly used to serve
+mergerfs.
+If you use something not listed above feel free to reach out and I will
+add it to the list.
 .SH FAQ
 .SS How well does mergerfs scale? Is it \[lq]production ready?\[rq]
 .PP
@@ -2322,17 +2710,50 @@ All of which are fixed in stable releases.
 .SS Can mergerfs be used with filesystems which already have data / are in use?
 .PP
 Yes.
-MergerFS is a proxy and does \f[B]NOT\f[R] interfere with the normal
-form or function of the filesystems / mounts / paths it manages.
+mergerfs is really just a proxy and does \f[B]NOT\f[R] interfere with
+the normal form or function of the filesystems / mounts / paths it
+manages.
+It is just another userland application that is acting as a
+man-in-the-middle.
+It can\[cq]t do anything that any other random piece of software
+can\[cq]t do.
 .PP
-MergerFS is \f[B]not\f[R] a traditional filesystem.
-MergerFS is \f[B]not\f[R] RAID.
+mergerfs is \f[B]not\f[R] a traditional filesystem that takes control
+over the underlying block device.
+mergerfs is \f[B]not\f[R] RAID.
 It does \f[B]not\f[R] manipulate the data that passes through it.
 It does \f[B]not\f[R] shard data across filesystems.
 It merely shards some \f[B]behavior\f[R] and aggregates others.
+.SS Can drives/filesystems be removed from the pool at will?
+.PP
+Yes.
+See previous question\[cq]s answer.
 .SS Can mergerfs be removed without affecting the data?
 .PP
+Yes.
 See the previous question\[cq]s answer.
+.SS Can drives/filesystems be moved to another pool?
+.PP
+Yes.
+See the previous question\[cq]s answer.
+.SS How do I migrate data into or out of the pool when adding/removing drives/filesystems?
+.PP
+You don\[cq]t need to.
+See the previous question\[cq]s answer.
+.SS How do I remove a drive/filesystem but keep the data in the pool?
+.PP
+Nothing special needs to be done.
+Remove the branch from mergerfs\[cq] config and copy (rsync) the data
+from the removed filesystem into the pool.
+Effectively the same as if it were you transfering data from one
+filesystem to another.
+.PP
+If you wish to continue using the pool while performing the transfer
+simply create another, temporary pool without the filesystem in question
+and then copy the data.
+It would probably be a good idea to set the branch to \f[C]RO\f[R] prior
+to doing this to ensure no new content is written to the filesystem
+while performing the copy.
 .SS What policies should I use?
 .PP
 Unless you\[cq]re doing something more niche the average user is
@@ -2406,7 +2827,9 @@ Anything, files or directories, created in that first directory will be
 placed on the same branch because it is preserving paths.
 .PP
 This catches a lot of new users off guard but changing the default would
-break the setup for many existing users.
+break the setup for many existing users and this policy is the safest
+policy as it will not change the general layout of the existing
+filesystems.
 If you do not care about path preservation and wish your files to be
 spread across all your filesystems change to \f[C]mfs\f[R] or similar
 policy as described above.
@@ -2436,6 +2859,16 @@ considered different devices.
 There is no way to link between them.
 You should mount in the highest directory in the mergerfs pool that
 includes all the paths you need if you want links to work.
+.SS Does FICLONE or FICLONERANGE work?
+.PP
+Unfortunately not.
+FUSE, the technology mergerfs is based on, does not support the
+\f[C]clone_file_range\f[R] feature needed for it to work.
+mergerfs won\[cq]t even know such a request is made.
+The kernel will simply return an error back to the application making
+the request.
+.PP
+Should FUSE gain the ability mergerfs will be updated to support it.
 .SS Can I use mergerfs without SnapRAID? SnapRAID without mergerfs?
 .PP
 Yes.
@@ -2499,8 +2932,8 @@ executable bit set.
 A common mistake by users new to Linux is to \f[C]chmod -R 644\f[R] when
 they should have \f[C]chmod -R u=rwX,go=rX\f[R].
 .PP
-If using a network filesystem such as NFS, SMB, CIFS (Samba) be sure to
-pay close attention to anything regarding permissioning and users.
+If using a network filesystem such as NFS or SMB (Samba) be sure to pay
+close attention to anything regarding permissioning and users.
 Root squashing and user translation for instance has bitten a few
 mergerfs users.
 Some of these also affect the use of mergerfs from container platforms
@@ -2559,93 +2992,6 @@ best provide equivalent performance and in cases worse performance.
 Splice is not supported on other platforms forcing a traditional
 read/write fallback to be provided.
 The splice code was removed to simplify the codebase.
-.SS Why use mergerfs over mhddfs?
-.PP
-mhddfs is no longer maintained and has some known stability and security
-issues (see below).
-MergerFS provides a superset of mhddfs\[cq] features and should offer
-the same or maybe better performance.
-.PP
-Below is an example of mhddfs and mergerfs setup to work similarly.
-.PP
-\f[C]mhddfs -o mlimit=4G,allow_other /mnt/drive1,/mnt/drive2 /mnt/pool\f[R]
-.PP
-\f[C]mergerfs -o minfreespace=4G,category.create=ff /mnt/drive1:/mnt/drive2 /mnt/pool\f[R]
-.SS Why use mergerfs over aufs?
-.PP
-aufs is mostly abandoned and no longer available in many distros.
-.PP
-While aufs can offer better peak performance mergerfs provides more
-configurability and is generally easier to use.
-mergerfs however does not offer the overlay / copy-on-write (CoW)
-features which aufs and overlayfs have.
-.SS Why use mergerfs over unionfs?
-.PP
-UnionFS is more like aufs than mergerfs in that it offers overlay / CoW
-features.
-If you\[cq]re just looking to create a union of filesystems and want
-flexibility in file/directory placement then mergerfs offers that
-whereas unionfs is more for overlaying RW filesystems over RO ones.
-.SS Why use mergerfs over overlayfs?
-.PP
-Same reasons as with unionfs.
-.SS Why use mergerfs over LVM/ZFS/BTRFS/RAID0 drive concatenation / striping?
-.PP
-With simple JBOD / drive concatenation / stripping / RAID0 a single
-drive failure will result in full pool failure.
-mergerfs performs a similar function without the possibility of
-catastrophic failure and the difficulties in recovery.
-Drives may fail, however, all other data will continue to be accessible.
-.PP
-When combined with something like SnapRaid (http://www.snapraid.it)
-and/or an offsite backup solution you can have the flexibility of JBOD
-without the single point of failure.
-.SS Why use mergerfs over ZFS?
-.PP
-MergerFS is not intended to be a replacement for ZFS.
-MergerFS is intended to provide flexible pooling of arbitrary
-filesystems (local or remote), of arbitrary sizes, and arbitrary
-filesystems.
-For \f[C]write once, read many\f[R] usecases such as bulk media storage.
-Where data integrity and backup is managed in other ways.
-In that situation ZFS can introduce a number of costs and limitations as
-described
-here (http://louwrentius.com/the-hidden-cost-of-using-zfs-for-your-home-nas.html),
-here (https://markmcb.com/2020/01/07/five-years-of-btrfs/), and
-here (https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSWhyNoRealReshaping).
-.SS Why use mergerfs over UnRAID?
-.PP
-UnRAID is a full OS and its storage layer, as I understand, is
-proprietary and closed source.
-Users who have experience with both have said they prefer the
-flexibility offered by mergerfs and for some the fact it is free and
-open source is important.
-.PP
-There are a number of UnRAID users who use mergerfs as well though
-I\[cq]m not entirely familiar with the use case.
-.SS Why use mergerfs over StableBit\[cq]s DrivePool?
-.PP
-DrivePool works only on Windows so not as common an alternative as other
-Linux solutions.
-If you want to use Windows then DrivePool is a good option.
-Functionally the two projects work a bit differently.
-DrivePool always writes to the filesystem with the most free space and
-later rebalances.
-mergerfs does not offer rebalance but chooses a branch at file/directory
-create time.
-DrivePool\[cq]s rebalancing can be done differently in any directory and
-has file pattern matching to further customize the behavior.
-mergerfs, not having rebalancing does not have these features, but
-similar features are planned for mergerfs v3.
-DrivePool has builtin file duplication which mergerfs does not natively
-support (but can be done via an external script.)
-.PP
-There are a lot of misc differences between the two projects but most
-features in DrivePool can be replicated with external tools in
-combination with mergerfs.
-.PP
-Additionally DrivePool is a closed source commercial product vs mergerfs
-a ISC licensed OSS project.
 .SS What should mergerfs NOT be used for?
 .IP \[bu] 2
 databases: Even if the database stored data in separate files (mergerfs
@@ -2712,33 +3058,14 @@ mergerfs uses available space for statfs calculations.
 If you\[cq]ve reserved space for root then it won\[cq]t show up.
 .PP
 You can remove the reserve by running: \f[C]tune2fs -m 0 <device>\f[R]
-.SS Can mergerfs mounts be exported over NFS?
-.PP
-Yes, however if you do anything which may changes files out of band
-(including for example using the \f[C]newest\f[R] policy) it will result
-in \[lq]stale file handle\[rq] errors unless properly setup.
-.PP
-Be sure to use the following options:
-.IP \[bu] 2
-noforget
-.IP \[bu] 2
-inodecalc=path-hash
-.SS Can mergerfs mounts be exported over Samba / SMB?
-.PP
-Yes.
-While some users have reported problems it appears to always be related
-to how Samba is setup in relation to permissions.
-.SS Can mergerfs mounts be used over SSHFS?
-.PP
-Yes.
 .SS I notice massive slowdowns of writes when enabling cache.files.
 .PP
-When file caching is enabled in any form (\f[C]cache.files!=off\f[R] or
-\f[C]direct_io=false\f[R]) it will issue \f[C]getxattr\f[R] requests for
-\f[C]security.capability\f[R] prior to \f[I]every single write\f[R].
+When file caching is enabled in any form (\f[C]cache.files!=off\f[R]) it
+will issue \f[C]getxattr\f[R] requests for \f[C]security.capability\f[R]
+prior to \f[I]every single write\f[R].
 This will usually result in a performance degradation, especially when
-using a network filesystem (such as NFS or CIFS/SMB/Samba.)
-Unfortunately at this moment the kernel is not caching the response.
+using a network filesystem (such as NFS or SMB.) Unfortunately at this
+moment the kernel is not caching the response.
 .PP
 To work around this situation mergerfs offers a few solutions.
 .IP "1." 3
@@ -2801,6 +3128,108 @@ If the ability to give writers priority is supported then that flag will
 be used so threads trying to change credentials don\[cq]t starve.
 This isn\[cq]t the best solution but should work reasonably well
 assuming there are few users.
+.SH mergerfs versus X
+.SS mhddfs
+.PP
+mhddfs had not been maintained for some time and has some known
+stability and security issues.
+mergerfs provides a superset of mhddfs\[cq] features and should offer
+the same or better performance.
+.PP
+Below is an example of mhddfs and mergerfs setup to work similarly.
+.PP
+\f[C]mhddfs -o mlimit=4G,allow_other /mnt/drive1,/mnt/drive2 /mnt/pool\f[R]
+.PP
+\f[C]mergerfs -o minfreespace=4G,category.create=ff /mnt/drive1:/mnt/drive2 /mnt/pool\f[R]
+.SS aufs
+.PP
+aufs is mostly abandoned and no longer available in most Linux distros.
+.PP
+While aufs can offer better peak performance mergerfs provides more
+configurability and is generally easier to use.
+mergerfs however does not offer the overlay / copy-on-write (CoW)
+features which aufs has.
+.SS unionfs-fuse
+.PP
+unionfs-fuse is more like aufs than mergerfs in that it offers overlay /
+copy-on-write (CoW) features.
+If you\[cq]re just looking to create a union of filesystems and want
+flexibility in file/directory placement then mergerfs offers that
+whereas unionfs is more for overlaying read/write filesystems over
+read-only ones.
+.SS overlayfs
+.PP
+overlayfs is similar to aufs and unionfs-fuse in that it also is
+primarily used to layer a read/write filesystem over one or more
+read-only filesystems.
+It does not have the ability to spread files/directories across numerous
+filesystems.
+.SS RAID0, JBOD, drive concatenation, striping
+.PP
+With simple JBOD / drive concatenation / stripping / RAID0 a single
+drive failure will result in full pool failure.
+mergerfs performs a similar function without the possibility of
+catastrophic failure and the difficulties in recovery.
+Drives may fail but all other filesystems and their data will continue
+to be accessible.
+.PP
+The main practical difference with mergerfs is the fact you don\[cq]t
+actually have contiguous space as large as if you used those other
+technologies.
+Meaning you can\[cq]t create a 2TB file on a pool of 2 1TB filesystems.
+.PP
+When combined with something like SnapRaid (http://www.snapraid.it)
+and/or an offsite backup solution you can have the flexibility of JBOD
+without the single point of failure.
+.SS UnRAID
+.PP
+UnRAID is a full OS and its storage layer, as I understand, is
+proprietary and closed source.
+Users who have experience with both have often said they prefer the
+flexibility offered by mergerfs and for some the fact it is open source
+is important.
+.PP
+There are a number of UnRAID users who use mergerfs as well though
+I\[cq]m not entirely familiar with the use case.
+.PP
+For semi-static data mergerfs + SnapRaid (http://www.snapraid.it)
+provides a similar solution.
+.SS ZFS
+.PP
+mergerfs is very different from ZFS.
+mergerfs is intended to provide flexible pooling of arbitrary
+filesystems (local or remote), of arbitrary sizes, and arbitrary
+filesystems.
+For \f[C]write once, read many\f[R] usecases such as bulk media storage.
+Where data integrity and backup is managed in other ways.
+In those usecases ZFS can introduce a number of costs and limitations as
+described
+here (http://louwrentius.com/the-hidden-cost-of-using-zfs-for-your-home-nas.html),
+here (https://markmcb.com/2020/01/07/five-years-of-btrfs/), and
+here (https://utcc.utoronto.ca/~cks/space/blog/solaris/ZFSWhyNoRealReshaping).
+.SS StableBit\[cq]s DrivePool
+.PP
+DrivePool works only on Windows so not as common an alternative as other
+Linux solutions.
+If you want to use Windows then DrivePool is a good option.
+Functionally the two projects work a bit differently.
+DrivePool always writes to the filesystem with the most free space and
+later rebalances.
+mergerfs does not offer rebalance but chooses a branch at file/directory
+create time.
+DrivePool\[cq]s rebalancing can be done differently in any directory and
+has file pattern matching to further customize the behavior.
+mergerfs, not having rebalancing does not have these features, but
+similar features are planned for mergerfs v3.
+DrivePool has builtin file duplication which mergerfs does not natively
+support (but can be done via an external script.)
+.PP
+There are a lot of misc differences between the two projects but most
+features in DrivePool can be replicated with external tools in
+combination with mergerfs.
+.PP
+Additionally DrivePool is a closed source commercial product vs mergerfs
+a ISC licensed OSS project.
 .SH SUPPORT
 .PP
 Filesystems are complex and difficult to debug.

mergerfs.spec

@@ -35,6 +35,7 @@ make install PREFIX=%{_prefix} DESTDIR=%{buildroot}
 /usr/bin/mergerfs
 /usr/bin/mergerfs-fusermount
 /sbin/mount.mergerfs
+/usr/lib/mergerfs/preload.so
 %doc %{_mandir}/*
 
 %changelog

src/boost/assert.hpp

@@ -0,0 +1,85 @@
+//
+//  boost/assert.hpp - BOOST_ASSERT(expr)
+//                     BOOST_ASSERT_MSG(expr, msg)
+//                     BOOST_VERIFY(expr)
+//                     BOOST_VERIFY_MSG(expr, msg)
+//                     BOOST_ASSERT_IS_VOID
+//
+//  Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
+//  Copyright (c) 2007, 2014 Peter Dimov
+//  Copyright (c) Beman Dawes 2011
+//  Copyright (c) 2015 Ion Gaztanaga
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  Note: There are no include guards. This is intentional.
+//
+//  See http://www.boost.org/libs/assert/assert.html for documentation.
+//
+
+//
+// Stop inspect complaining about use of 'assert':
+//
+// boostinspect:naassert_macro
+//
+
+//
+// BOOST_ASSERT, BOOST_ASSERT_MSG, BOOST_ASSERT_IS_VOID
+//
+
+#undef BOOST_ASSERT
+#undef BOOST_ASSERT_MSG
+#undef BOOST_ASSERT_IS_VOID
+
+#if defined(BOOST_DISABLE_ASSERTS) || ( defined(BOOST_ENABLE_ASSERT_DEBUG_HANDLER) && defined(NDEBUG) )
+
+# define BOOST_ASSERT(expr) ((void)0)
+# define BOOST_ASSERT_MSG(expr, msg) ((void)0)
+# define BOOST_ASSERT_IS_VOID
+
+#elif defined(BOOST_ENABLE_ASSERT_HANDLER) || ( defined(BOOST_ENABLE_ASSERT_DEBUG_HANDLER) && !defined(NDEBUG) )
+
+#include <boost/config.hpp> // for BOOST_LIKELY
+#include <boost/current_function.hpp>
+
+namespace boost
+{
+    void assertion_failed(char const * expr, char const * function, char const * file, long line); // user defined
+    void assertion_failed_msg(char const * expr, char const * msg, char const * function, char const * file, long line); // user defined
+} // namespace boost
+
+#define BOOST_ASSERT(expr) (BOOST_LIKELY(!!(expr))? ((void)0): ::boost::assertion_failed(#expr, BOOST_CURRENT_FUNCTION, __FILE__, __LINE__))
+#define BOOST_ASSERT_MSG(expr, msg) (BOOST_LIKELY(!!(expr))? ((void)0): ::boost::assertion_failed_msg(#expr, msg, BOOST_CURRENT_FUNCTION, __FILE__, __LINE__))
+
+#else
+
+# include <assert.h> // .h to support old libraries w/o <cassert> - effect is the same
+
+# define BOOST_ASSERT(expr) assert(expr)
+# define BOOST_ASSERT_MSG(expr, msg) assert((expr)&&(msg))
+#if defined(NDEBUG)
+# define BOOST_ASSERT_IS_VOID
+#endif
+
+#endif
+
+//
+// BOOST_VERIFY, BOOST_VERIFY_MSG
+//
+
+#undef BOOST_VERIFY
+#undef BOOST_VERIFY_MSG
+
+#if defined(BOOST_DISABLE_ASSERTS) || ( !defined(BOOST_ENABLE_ASSERT_HANDLER) && defined(NDEBUG) )
+
+# define BOOST_VERIFY(expr) ((void)(expr))
+# define BOOST_VERIFY_MSG(expr, msg) ((void)(expr))
+
+#else
+
+# define BOOST_VERIFY(expr) BOOST_ASSERT(expr)
+# define BOOST_VERIFY_MSG(expr, msg) BOOST_ASSERT_MSG(expr,msg)
+
+#endif

src/boost/assert/source_location.hpp

@@ -0,0 +1,190 @@
+#ifndef BOOST_ASSERT_SOURCE_LOCATION_HPP_INCLUDED
+#define BOOST_ASSERT_SOURCE_LOCATION_HPP_INCLUDED
+
+// http://www.boost.org/libs/assert
+//
+// Copyright 2019, 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <boost/cstdint.hpp>
+#include <iosfwd>
+#include <string>
+#include <cstdio>
+#include <cstring>
+
+#if defined(__cpp_lib_source_location) && __cpp_lib_source_location >= 201907L
+# include <source_location>
+#endif
+
+namespace boost
+{
+
+struct source_location
+{
+private:
+
+    char const * file_;
+    char const * function_;
+    boost::uint_least32_t line_;
+    boost::uint_least32_t column_;
+
+public:
+
+    BOOST_CONSTEXPR source_location() BOOST_NOEXCEPT: file_( "" ), function_( "" ), line_( 0 ), column_( 0 )
+    {
+    }
+
+    BOOST_CONSTEXPR source_location( char const * file, boost::uint_least32_t ln, char const * function, boost::uint_least32_t col = 0 ) BOOST_NOEXCEPT: file_( file ), function_( function ), line_( ln ), column_( col )
+    {
+    }
+
+#if defined(__cpp_lib_source_location) && __cpp_lib_source_location >= 201907L
+
+    BOOST_CONSTEXPR source_location( std::source_location const& loc ) BOOST_NOEXCEPT: file_( loc.file_name() ), function_( loc.function_name() ), line_( loc.line() ), column_( loc.column() )
+    {
+    }
+
+#endif
+
+    BOOST_CONSTEXPR char const * file_name() const BOOST_NOEXCEPT
+    {
+        return file_;
+    }
+
+    BOOST_CONSTEXPR char const * function_name() const BOOST_NOEXCEPT
+    {
+        return function_;
+    }
+
+    BOOST_CONSTEXPR boost::uint_least32_t line() const BOOST_NOEXCEPT
+    {
+        return line_;
+    }
+
+    BOOST_CONSTEXPR boost::uint_least32_t column() const BOOST_NOEXCEPT
+    {
+        return column_;
+    }
+
+#if defined(BOOST_MSVC)
+# pragma warning( push )
+# pragma warning( disable: 4996 )
+#endif
+
+#if ( defined(_MSC_VER) && _MSC_VER < 1900 ) || ( defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR) )
+# define BOOST_ASSERT_SNPRINTF(buffer, format, arg) std::sprintf(buffer, format, arg)
+#else
+# define BOOST_ASSERT_SNPRINTF(buffer, format, arg) std::snprintf(buffer, sizeof(buffer)/sizeof(buffer[0]), format, arg)
+#endif
+
+    std::string to_string() const
+    {
+        unsigned long ln = line();
+
+        if( ln == 0 )
+        {
+            return "(unknown source location)";
+        }
+
+        std::string r = file_name();
+
+        char buffer[ 16 ];
+
+        BOOST_ASSERT_SNPRINTF( buffer, ":%lu", ln );
+        r += buffer;
+
+        unsigned long co = column();
+
+        if( co )
+        {
+            BOOST_ASSERT_SNPRINTF( buffer, ":%lu", co );
+            r += buffer;
+        }
+
+        char const* fn = function_name();
+
+        if( *fn != 0 )
+        {
+            r += " in function '";
+            r += fn;
+            r += '\'';
+        }
+
+        return r;
+    }
+
+#undef BOOST_ASSERT_SNPRINTF
+
+#if defined(BOOST_MSVC)
+# pragma warning( pop )
+#endif
+
+    inline friend bool operator==( source_location const& s1, source_location const& s2 ) BOOST_NOEXCEPT
+    {
+        return std::strcmp( s1.file_, s2.file_ ) == 0 && std::strcmp( s1.function_, s2.function_ ) == 0 && s1.line_ == s2.line_ && s1.column_ == s2.column_;
+    }
+
+    inline friend bool operator!=( source_location const& s1, source_location const& s2 ) BOOST_NOEXCEPT
+    {
+        return !( s1 == s2 );
+    }
+};
+
+template<class E, class T> std::basic_ostream<E, T> & operator<<( std::basic_ostream<E, T> & os, source_location const & loc )
+{
+    os << loc.to_string();
+    return os;
+}
+
+} // namespace boost
+
+#if defined(BOOST_DISABLE_CURRENT_LOCATION)
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location()
+
+#elif defined(BOOST_MSVC) && BOOST_MSVC >= 1926
+
+// std::source_location::current() is available in -std:c++20, but fails with consteval errors before 19.31, and doesn't produce
+// the correct result under 19.31, so prefer the built-ins
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__builtin_FILE(), __builtin_LINE(), __builtin_FUNCTION(), __builtin_COLUMN())
+
+#elif defined(BOOST_MSVC)
+
+// __LINE__ is not a constant expression under /ZI (edit and continue) for 1925 and before
+
+# define BOOST_CURRENT_LOCATION_IMPL_1(x) BOOST_CURRENT_LOCATION_IMPL_2(x)
+# define BOOST_CURRENT_LOCATION_IMPL_2(x) (x##0 / 10)
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__FILE__, BOOST_CURRENT_LOCATION_IMPL_1(__LINE__), "")
+
+#elif defined(__cpp_lib_source_location) && __cpp_lib_source_location >= 201907L && !defined(__NVCC__)
+
+// Under nvcc, __builtin_source_location is not constexpr
+// https://github.com/boostorg/assert/issues/32
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location(::std::source_location::current())
+
+#elif defined(BOOST_CLANG) && BOOST_CLANG_VERSION >= 90000
+
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__builtin_FILE(), __builtin_LINE(), __builtin_FUNCTION(), __builtin_COLUMN())
+
+#elif defined(BOOST_GCC) && BOOST_GCC >= 70000
+
+// The built-ins are available in 4.8+, but are not constant expressions until 7
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__builtin_FILE(), __builtin_LINE(), __builtin_FUNCTION())
+
+#elif defined(BOOST_GCC) && BOOST_GCC >= 50000
+
+// __PRETTY_FUNCTION__ is allowed outside functions under GCC, but 4.x suffers from codegen bugs
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__FILE__, __LINE__, __PRETTY_FUNCTION__)
+
+#else
+
+// __func__ macros aren't allowed outside functions, but BOOST_CURRENT_LOCATION is
+# define BOOST_CURRENT_LOCATION ::boost::source_location(__FILE__, __LINE__, "")
+
+#endif
+
+#endif // #ifndef BOOST_ASSERT_SOURCE_LOCATION_HPP_INCLUDED

src/boost/bind/detail/requires_cxx11.hpp

@@ -0,0 +1,22 @@
+#ifndef BOOST_BIND_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+#define BOOST_BIND_DETAIL_REQUIRES_CXX11_HPP_INCLUDED
+
+// Copyright 2023 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+#include <boost/config/pragma_message.hpp>
+
+#if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || \
+    defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
+    defined(BOOST_NO_CXX11_DECLTYPE) || \
+    defined(BOOST_NO_CXX11_CONSTEXPR) || \
+    defined(BOOST_NO_CXX11_NOEXCEPT) || \
+    defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
+
+BOOST_PRAGMA_MESSAGE("C++03 support was deprecated in Boost.Bind 1.82 and will be removed in Boost.Bind 1.85.")
+
+#endif
+
+#endif // #ifndef BOOST_BIND_DETAIL_REQUIRES_CXX11_HPP_INCLUDED

src/boost/bind/mem_fn.hpp

@@ -0,0 +1,404 @@
+#ifndef BOOST_BIND_MEM_FN_HPP_INCLUDED
+#define BOOST_BIND_MEM_FN_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  mem_fn.hpp - a generalization of std::mem_fun[_ref]
+//
+//  Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
+//  Copyright (c) 2001 David Abrahams
+//  Copyright (c) 2003-2005 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/bind/mem_fn.html for documentation.
+//
+
+#include <boost/bind/detail/requires_cxx11.hpp>
+#include <boost/get_pointer.hpp>
+#include <boost/config.hpp>
+#include <boost/config/workaround.hpp>
+
+namespace boost
+{
+
+#if defined(BOOST_NO_VOID_RETURNS)
+
+#define BOOST_MEM_FN_CLASS_F , class F
+#define BOOST_MEM_FN_TYPEDEF(X)
+
+namespace _mfi // mem_fun_impl
+{
+
+template<class V> struct mf
+{
+
+#define BOOST_MEM_FN_RETURN return
+
+#define BOOST_MEM_FN_NAME(X) inner_##X
+#define BOOST_MEM_FN_CC
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#if defined(BOOST_MEM_FN_ENABLE_CDECL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) inner_##X##_cdecl
+#define BOOST_MEM_FN_CC __cdecl
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#if defined(BOOST_MEM_FN_ENABLE_STDCALL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) inner_##X##_stdcall
+#define BOOST_MEM_FN_CC __stdcall
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#if defined(BOOST_MEM_FN_ENABLE_FASTCALL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) inner_##X##_fastcall
+#define BOOST_MEM_FN_CC __fastcall
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#undef BOOST_MEM_FN_RETURN
+
+}; // struct mf<V>
+
+template<> struct mf<void>
+{
+
+#define BOOST_MEM_FN_RETURN
+
+#define BOOST_MEM_FN_NAME(X) inner_##X
+#define BOOST_MEM_FN_CC
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#if defined(BOOST_MEM_FN_ENABLE_CDECL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) inner_##X##_cdecl
+#define BOOST_MEM_FN_CC __cdecl
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#ifdef BOOST_MEM_FN_ENABLE_STDCALL
+
+#define BOOST_MEM_FN_NAME(X) inner_##X##_stdcall
+#define BOOST_MEM_FN_CC __stdcall
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#ifdef BOOST_MEM_FN_ENABLE_FASTCALL
+
+#define BOOST_MEM_FN_NAME(X) inner_##X##_fastcall
+#define BOOST_MEM_FN_CC __fastcall
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#undef BOOST_MEM_FN_RETURN
+
+}; // struct mf<void>
+
+#undef BOOST_MEM_FN_CLASS_F
+#undef BOOST_MEM_FN_TYPEDEF_F
+
+#define BOOST_MEM_FN_NAME(X) X
+#define BOOST_MEM_FN_NAME2(X) inner_##X
+#define BOOST_MEM_FN_CC
+
+#include <boost/bind/mem_fn_vw.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_NAME2
+#undef BOOST_MEM_FN_CC
+
+#if defined(BOOST_MEM_FN_ENABLE_CDECL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_cdecl
+#define BOOST_MEM_FN_NAME2(X) inner_##X##_cdecl
+#define BOOST_MEM_FN_CC __cdecl
+
+#include <boost/bind/mem_fn_vw.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_NAME2
+#undef BOOST_MEM_FN_CC
+
+#endif
+
+#ifdef BOOST_MEM_FN_ENABLE_STDCALL
+
+#define BOOST_MEM_FN_NAME(X) X##_stdcall
+#define BOOST_MEM_FN_NAME2(X) inner_##X##_stdcall
+#define BOOST_MEM_FN_CC __stdcall
+
+#include <boost/bind/mem_fn_vw.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_NAME2
+#undef BOOST_MEM_FN_CC
+
+#endif
+
+#ifdef BOOST_MEM_FN_ENABLE_FASTCALL
+
+#define BOOST_MEM_FN_NAME(X) X##_fastcall
+#define BOOST_MEM_FN_NAME2(X) inner_##X##_fastcall
+#define BOOST_MEM_FN_CC __fastcall
+
+#include <boost/bind/mem_fn_vw.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_NAME2
+#undef BOOST_MEM_FN_CC
+
+#endif
+
+} // namespace _mfi
+
+#else // #ifdef BOOST_NO_VOID_RETURNS
+
+#define BOOST_MEM_FN_CLASS_F
+#define BOOST_MEM_FN_TYPEDEF(X) typedef X;
+
+namespace _mfi
+{
+
+#define BOOST_MEM_FN_RETURN return
+
+#define BOOST_MEM_FN_NAME(X) X
+#define BOOST_MEM_FN_CC
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#if defined(BOOST_MEM_FN_ENABLE_CDECL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_cdecl
+#define BOOST_MEM_FN_CC __cdecl
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#if defined(BOOST_MEM_FN_ENABLE_STDCALL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_stdcall
+#define BOOST_MEM_FN_CC __stdcall
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#if defined(BOOST_MEM_FN_ENABLE_FASTCALL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_fastcall
+#define BOOST_MEM_FN_CC __fastcall
+
+#include <boost/bind/mem_fn_template.hpp>
+
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NAME
+
+#endif
+
+#undef BOOST_MEM_FN_RETURN
+
+} // namespace _mfi
+
+#undef BOOST_MEM_FN_CLASS_F
+#undef BOOST_MEM_FN_TYPEDEF
+
+#endif // #ifdef BOOST_NO_VOID_RETURNS
+
+#define BOOST_MEM_FN_NAME(X) X
+#define BOOST_MEM_FN_CC
+#define BOOST_MEM_FN_NOEXCEPT
+
+#include <boost/bind/mem_fn_cc.hpp>
+
+#if defined( __cpp_noexcept_function_type ) || defined( _NOEXCEPT_TYPES_SUPPORTED )
+#  undef BOOST_MEM_FN_NOEXCEPT
+#  define BOOST_MEM_FN_NOEXCEPT noexcept
+#  include <boost/bind/mem_fn_cc.hpp>
+#endif
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NOEXCEPT
+
+#if defined(BOOST_MEM_FN_ENABLE_CDECL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_cdecl
+#define BOOST_MEM_FN_CC __cdecl
+#define BOOST_MEM_FN_NOEXCEPT
+
+#include <boost/bind/mem_fn_cc.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NOEXCEPT
+
+#endif
+
+#if defined(BOOST_MEM_FN_ENABLE_STDCALL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_stdcall
+#define BOOST_MEM_FN_CC __stdcall
+#define BOOST_MEM_FN_NOEXCEPT
+
+#include <boost/bind/mem_fn_cc.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NOEXCEPT
+
+#endif
+
+#if defined(BOOST_MEM_FN_ENABLE_FASTCALL) && !defined(_M_X64)
+
+#define BOOST_MEM_FN_NAME(X) X##_fastcall
+#define BOOST_MEM_FN_CC __fastcall
+#define BOOST_MEM_FN_NOEXCEPT
+
+#include <boost/bind/mem_fn_cc.hpp>
+
+#undef BOOST_MEM_FN_NAME
+#undef BOOST_MEM_FN_CC
+#undef BOOST_MEM_FN_NOEXCEPT
+
+#endif
+
+// data member support
+
+namespace _mfi
+{
+
+template<class R, class T> class dm
+{
+public:
+
+    typedef R const & result_type;
+    typedef T const * argument_type;
+
+private:
+    
+    typedef R (T::*F);
+    F f_;
+
+    template<class U> R const & call(U & u, T const *) const
+    {
+        return (u.*f_);
+    }
+
+    template<class U> R const & call(U & u, void const *) const
+    {
+        return (get_pointer(u)->*f_);
+    }
+
+public:
+    
+    explicit dm(F f): f_(f) {}
+
+    R & operator()(T * p) const
+    {
+        return (p->*f_);
+    }
+
+    R const & operator()(T const * p) const
+    {
+        return (p->*f_);
+    }
+
+    template<class U> R const & operator()(U const & u) const
+    {
+        return call(u, &u);
+    }
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300) && !BOOST_WORKAROUND(__MWERKS__, < 0x3200)
+
+    R & operator()(T & t) const
+    {
+        return (t.*f_);
+    }
+
+    R const & operator()(T const & t) const
+    {
+        return (t.*f_);
+    }
+
+#endif
+
+    bool operator==(dm const & rhs) const
+    {
+        return f_ == rhs.f_;
+    }
+
+    bool operator!=(dm const & rhs) const
+    {
+        return f_ != rhs.f_;
+    }
+};
+
+} // namespace _mfi
+
+template<class R, class T> _mfi::dm<R, T> mem_fn(R T::*f)
+{
+    return _mfi::dm<R, T>(f);
+}
+
+} // namespace boost
+
+#endif // #ifndef BOOST_BIND_MEM_FN_HPP_INCLUDED

src/boost/bind/mem_fn_cc.hpp

@@ -0,0 +1,103 @@
+//
+//  bind/mem_fn_cc.hpp - support for different calling conventions
+//
+//  Do not include this header directly.
+//
+//  Copyright (c) 2001 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/bind/mem_fn.html for documentation.
+//
+
+template<class R, class T> _mfi::BOOST_MEM_FN_NAME(mf0)<R, T> mem_fn(R (BOOST_MEM_FN_CC T::*f) () BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf0)<R, T>(f);
+}
+
+template<class R, class T> _mfi::BOOST_MEM_FN_NAME(cmf0)<R, T> mem_fn(R (BOOST_MEM_FN_CC T::*f) () const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf0)<R, T>(f);
+}
+
+template<class R, class T, class A1> _mfi::BOOST_MEM_FN_NAME(mf1)<R, T, A1> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf1)<R, T, A1>(f);
+}
+
+template<class R, class T, class A1> _mfi::BOOST_MEM_FN_NAME(cmf1)<R, T, A1> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf1)<R, T, A1>(f);
+}
+
+template<class R, class T, class A1, class A2> _mfi::BOOST_MEM_FN_NAME(mf2)<R, T, A1, A2> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf2)<R, T, A1, A2>(f);
+}
+
+template<class R, class T, class A1, class A2> _mfi::BOOST_MEM_FN_NAME(cmf2)<R, T, A1, A2> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf2)<R, T, A1, A2>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3> _mfi::BOOST_MEM_FN_NAME(mf3)<R, T, A1, A2, A3> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf3)<R, T, A1, A2, A3>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3> _mfi::BOOST_MEM_FN_NAME(cmf3)<R, T, A1, A2, A3> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf3)<R, T, A1, A2, A3>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4> _mfi::BOOST_MEM_FN_NAME(mf4)<R, T, A1, A2, A3, A4> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf4)<R, T, A1, A2, A3, A4>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4> _mfi::BOOST_MEM_FN_NAME(cmf4)<R, T, A1, A2, A3, A4> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf4)<R, T, A1, A2, A3, A4>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5> _mfi::BOOST_MEM_FN_NAME(mf5)<R, T, A1, A2, A3, A4, A5> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf5)<R, T, A1, A2, A3, A4, A5>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5> _mfi::BOOST_MEM_FN_NAME(cmf5)<R, T, A1, A2, A3, A4, A5> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf5)<R, T, A1, A2, A3, A4, A5>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6> _mfi::BOOST_MEM_FN_NAME(mf6)<R, T, A1, A2, A3, A4, A5, A6> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5, A6) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf6)<R, T, A1, A2, A3, A4, A5, A6>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6> _mfi::BOOST_MEM_FN_NAME(cmf6)<R, T, A1, A2, A3, A4, A5, A6> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5, A6) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf6)<R, T, A1, A2, A3, A4, A5, A6>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7> _mfi::BOOST_MEM_FN_NAME(mf7)<R, T, A1, A2, A3, A4, A5, A6, A7> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5, A6, A7) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf7)<R, T, A1, A2, A3, A4, A5, A6, A7>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7> _mfi::BOOST_MEM_FN_NAME(cmf7)<R, T, A1, A2, A3, A4, A5, A6, A7> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5, A6, A7) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf7)<R, T, A1, A2, A3, A4, A5, A6, A7>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8> _mfi::BOOST_MEM_FN_NAME(mf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5, A6, A7, A8) BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(mf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8>(f);
+}
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8> _mfi::BOOST_MEM_FN_NAME(cmf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8> mem_fn(R (BOOST_MEM_FN_CC T::*f) (A1, A2, A3, A4, A5, A6, A7, A8) const BOOST_MEM_FN_NOEXCEPT)
+{
+    return _mfi::BOOST_MEM_FN_NAME(cmf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8>(f);
+}

src/boost/bind/mem_fn_vw.hpp

@@ -0,0 +1,130 @@
+//
+//  bind/mem_fn_vw.hpp - void return helper wrappers
+//
+//  Do not include this header directly
+//
+//  Copyright (c) 2001 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+//  See http://www.boost.org/libs/bind/mem_fn.html for documentation.
+//
+
+template<class R, class T> struct BOOST_MEM_FN_NAME(mf0): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf0)<R, T, R (BOOST_MEM_FN_CC T::*) ()>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) ();
+    explicit BOOST_MEM_FN_NAME(mf0)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf0)<R, T, F>(f) {}
+};
+
+template<class R, class T> struct BOOST_MEM_FN_NAME(cmf0): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf0)<R, T, R (BOOST_MEM_FN_CC T::*) () const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) () const;
+    explicit BOOST_MEM_FN_NAME(cmf0)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf0)<R, T, F>(f) {}
+};
+
+
+template<class R, class T, class A1> struct BOOST_MEM_FN_NAME(mf1): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf1)<R, T, A1, R (BOOST_MEM_FN_CC T::*) (A1)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1);
+    explicit BOOST_MEM_FN_NAME(mf1)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf1)<R, T, A1, F>(f) {}
+};
+
+template<class R, class T, class A1> struct BOOST_MEM_FN_NAME(cmf1): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf1)<R, T, A1, R (BOOST_MEM_FN_CC T::*) (A1) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1) const;
+    explicit BOOST_MEM_FN_NAME(cmf1)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf1)<R, T, A1, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2> struct BOOST_MEM_FN_NAME(mf2): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf2)<R, T, A1, A2, R (BOOST_MEM_FN_CC T::*) (A1, A2)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2);
+    explicit BOOST_MEM_FN_NAME(mf2)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf2)<R, T, A1, A2, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2> struct BOOST_MEM_FN_NAME(cmf2): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf2)<R, T, A1, A2, R (BOOST_MEM_FN_CC T::*) (A1, A2) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2) const;
+    explicit BOOST_MEM_FN_NAME(cmf2)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf2)<R, T, A1, A2, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2, class A3> struct BOOST_MEM_FN_NAME(mf3): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf3)<R, T, A1, A2, A3, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3);
+    explicit BOOST_MEM_FN_NAME(mf3)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf3)<R, T, A1, A2, A3, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2, class A3> struct BOOST_MEM_FN_NAME(cmf3): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf3)<R, T, A1, A2, A3, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3) const;
+    explicit BOOST_MEM_FN_NAME(cmf3)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf3)<R, T, A1, A2, A3, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2, class A3, class A4> struct BOOST_MEM_FN_NAME(mf4): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf4)<R, T, A1, A2, A3, A4, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4);
+    explicit BOOST_MEM_FN_NAME(mf4)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf4)<R, T, A1, A2, A3, A4, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2, class A3, class A4> struct BOOST_MEM_FN_NAME(cmf4): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf4)<R, T, A1, A2, A3, A4, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4) const;
+    explicit BOOST_MEM_FN_NAME(cmf4)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf4)<R, T, A1, A2, A3, A4, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5> struct BOOST_MEM_FN_NAME(mf5): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf5)<R, T, A1, A2, A3, A4, A5, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5);
+    explicit BOOST_MEM_FN_NAME(mf5)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf5)<R, T, A1, A2, A3, A4, A5, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5> struct BOOST_MEM_FN_NAME(cmf5): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf5)<R, T, A1, A2, A3, A4, A5, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5) const;
+    explicit BOOST_MEM_FN_NAME(cmf5)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf5)<R, T, A1, A2, A3, A4, A5, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6> struct BOOST_MEM_FN_NAME(mf6): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf6)<R, T, A1, A2, A3, A4, A5, A6, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5, A6)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5, A6);
+    explicit BOOST_MEM_FN_NAME(mf6)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf6)<R, T, A1, A2, A3, A4, A5, A6, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6> struct BOOST_MEM_FN_NAME(cmf6): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf6)<R, T, A1, A2, A3, A4, A5, A6, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5, A6) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5, A6) const;
+    explicit BOOST_MEM_FN_NAME(cmf6)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf6)<R, T, A1, A2, A3, A4, A5, A6, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7> struct BOOST_MEM_FN_NAME(mf7): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf7)<R, T, A1, A2, A3, A4, A5, A6, A7, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5, A6, A7)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5, A6, A7);
+    explicit BOOST_MEM_FN_NAME(mf7)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf7)<R, T, A1, A2, A3, A4, A5, A6, A7, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7> struct BOOST_MEM_FN_NAME(cmf7): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf7)<R, T, A1, A2, A3, A4, A5, A6, A7, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5, A6, A7) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5, A6, A7) const;
+    explicit BOOST_MEM_FN_NAME(cmf7)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf7)<R, T, A1, A2, A3, A4, A5, A6, A7, F>(f) {}
+};
+
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8> struct BOOST_MEM_FN_NAME(mf8): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5, A6, A7, A8)>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5, A6, A7, A8);
+    explicit BOOST_MEM_FN_NAME(mf8)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(mf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8, F>(f) {}
+};
+
+template<class R, class T, class A1, class A2, class A3, class A4, class A5, class A6, class A7, class A8> struct BOOST_MEM_FN_NAME(cmf8): public mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8, R (BOOST_MEM_FN_CC T::*) (A1, A2, A3, A4, A5, A6, A7, A8) const>
+{
+    typedef R (BOOST_MEM_FN_CC T::*F) (A1, A2, A3, A4, A5, A6, A7, A8) const;
+    explicit BOOST_MEM_FN_NAME(cmf8)(F f): mf<R>::BOOST_NESTED_TEMPLATE BOOST_MEM_FN_NAME2(cmf8)<R, T, A1, A2, A3, A4, A5, A6, A7, A8, F>(f) {}
+};
+

src/boost/call_traits.hpp

@@ -0,0 +1,20 @@
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
+
+//  See boost/detail/call_traits.hpp
+//  for full copyright notices.
+
+#ifndef BOOST_CALL_TRAITS_HPP
+#define BOOST_CALL_TRAITS_HPP
+
+#ifndef BOOST_CONFIG_HPP
+#include <boost/config.hpp>
+#endif
+
+#include <boost/detail/call_traits.hpp>
+
+#endif // BOOST_CALL_TRAITS_HPP

src/boost/config.hpp

@@ -0,0 +1,67 @@
+//  Boost config.hpp configuration header file  ------------------------------//
+
+//  (C) Copyright John Maddock 2002.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for most recent version.
+
+//  Boost config.hpp policy and rationale documentation has been moved to
+//  http://www.boost.org/libs/config
+//
+//  CAUTION: This file is intended to be completely stable -
+//           DO NOT MODIFY THIS FILE!
+//
+
+#ifndef BOOST_CONFIG_HPP
+#define BOOST_CONFIG_HPP
+
+// if we don't have a user config, then use the default location:
+#if !defined(BOOST_USER_CONFIG) && !defined(BOOST_NO_USER_CONFIG)
+#  define BOOST_USER_CONFIG <boost/config/user.hpp>
+#if 0
+// For dependency trackers:
+#  include <boost/config/user.hpp>
+#endif
+#endif
+// include it first:
+#ifdef BOOST_USER_CONFIG
+#  include BOOST_USER_CONFIG
+#endif
+
+// if we don't have a compiler config set, try and find one:
+#if !defined(BOOST_COMPILER_CONFIG) && !defined(BOOST_NO_COMPILER_CONFIG) && !defined(BOOST_NO_CONFIG)
+#  include <boost/config/detail/select_compiler_config.hpp>
+#endif
+// if we have a compiler config, include it now:
+#ifdef BOOST_COMPILER_CONFIG
+#  include BOOST_COMPILER_CONFIG
+#endif
+
+// if we don't have a std library config set, try and find one:
+#if !defined(BOOST_STDLIB_CONFIG) && !defined(BOOST_NO_STDLIB_CONFIG) && !defined(BOOST_NO_CONFIG) && defined(__cplusplus)
+#  include <boost/config/detail/select_stdlib_config.hpp>
+#endif
+// if we have a std library config, include it now:
+#ifdef BOOST_STDLIB_CONFIG
+#  include BOOST_STDLIB_CONFIG
+#endif
+
+// if we don't have a platform config set, try and find one:
+#if !defined(BOOST_PLATFORM_CONFIG) && !defined(BOOST_NO_PLATFORM_CONFIG) && !defined(BOOST_NO_CONFIG)
+#  include <boost/config/detail/select_platform_config.hpp>
+#endif
+// if we have a platform config, include it now:
+#ifdef BOOST_PLATFORM_CONFIG
+#  include BOOST_PLATFORM_CONFIG
+#endif
+
+// get config suffix code:
+#include <boost/config/detail/suffix.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#endif  // BOOST_CONFIG_HPP

src/boost/config/abi/borland_prefix.hpp

@@ -0,0 +1,27 @@
+//  (C) Copyright John Maddock 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  for C++ Builder the following options effect the ABI:
+//
+//  -b (on or off - effect emum sizes)
+//  -Vx  (on or off - empty members)
+//  -Ve (on or off - empty base classes)
+//  -aX (alignment - 5 options).
+//  -pX (Calling convention - 4 options)
+//  -VmX (member pointer size and layout - 5 options)
+//  -VC (on or off, changes name mangling)
+//  -Vl (on or off, changes struct layout).
+
+//  In addition the following warnings are sufficiently annoying (and
+//  unfixable) to have them turned off by default:
+//
+//  8027 - functions containing [for|while] loops are not expanded inline
+//  8026 - functions taking class by value arguments are not expanded inline
+
+#pragma nopushoptwarn
+#  pragma option push -a8 -Vx- -Ve- -b- -pc -Vmv -VC- -Vl- -w-8027 -w-8026
+
+
+

src/boost/config/abi/borland_suffix.hpp

@@ -0,0 +1,12 @@
+//  (C) Copyright John Maddock 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#  pragma option pop
+#pragma nopushoptwarn
+
+
+
+
+

src/boost/config/abi/msvc_prefix.hpp

@@ -0,0 +1,22 @@
+//  (C) Copyright John Maddock 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//
+// Boost binaries are built with the compiler's default ABI settings,
+// if the user changes their default alignment in the VS IDE then their
+// code will no longer be binary compatible with the bjam built binaries
+// unless this header is included to force Boost code into a consistent ABI.
+//
+// Note that inclusion of this header is only necessary for libraries with 
+// separate source, header only libraries DO NOT need this as long as all
+// translation units are built with the same options.
+//
+#if defined(_M_X64)
+#  pragma pack(push,16)
+#else
+#  pragma pack(push,8)
+#endif
+
+

src/boost/config/abi/msvc_suffix.hpp

@@ -0,0 +1,8 @@
+//  (C) Copyright John Maddock 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#pragma pack(pop)
+
+

src/boost/config/abi_prefix.hpp

@@ -0,0 +1,25 @@
+//  abi_prefix header  -------------------------------------------------------//
+
+// (c) Copyright John Maddock 2003
+   
+// Use, modification and distribution are subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt).
+
+#ifndef BOOST_CONFIG_ABI_PREFIX_HPP
+# define BOOST_CONFIG_ABI_PREFIX_HPP
+#else
+# error double inclusion of header boost/config/abi_prefix.hpp is an error
+#endif
+
+#include <boost/config.hpp>
+
+// this must occur after all other includes and before any code appears:
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_PREFIX
+#endif
+
+#if defined( BOOST_BORLANDC )
+#pragma nopushoptwarn
+#endif
+

src/boost/config/abi_suffix.hpp

@@ -0,0 +1,25 @@
+//  abi_sufffix header  -------------------------------------------------------//
+
+// (c) Copyright John Maddock 2003
+   
+// Use, modification and distribution are subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt).
+
+// This header should be #included AFTER code that was preceded by a #include
+// <boost/config/abi_prefix.hpp>.
+
+#ifndef BOOST_CONFIG_ABI_PREFIX_HPP
+# error Header boost/config/abi_suffix.hpp must only be used after boost/config/abi_prefix.hpp
+#else
+# undef BOOST_CONFIG_ABI_PREFIX_HPP
+#endif
+
+// the suffix header occurs after all of our code:
+#ifdef BOOST_HAS_ABI_HEADERS
+#  include BOOST_ABI_SUFFIX
+#endif
+
+#if defined( BOOST_BORLANDC )
+#pragma nopushoptwarn
+#endif

src/boost/config/assert_cxx03.hpp

@@ -0,0 +1,211 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+
+#ifdef BOOST_NO_ADL_BARRIER
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_ADL_BARRIER."
+#endif
+#ifdef BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP."
+#endif
+#ifdef BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS."
+#endif
+#ifdef BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_COMPLETE_VALUE_INITIALIZATION."
+#endif
+#ifdef BOOST_NO_CTYPE_FUNCTIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_CTYPE_FUNCTIONS."
+#endif
+#ifdef BOOST_NO_CV_SPECIALIZATIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_CV_SPECIALIZATIONS."
+#endif
+#ifdef BOOST_NO_CV_VOID_SPECIALIZATIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_CV_VOID_SPECIALIZATIONS."
+#endif
+#ifdef BOOST_NO_CWCHAR
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_CWCHAR."
+#endif
+#ifdef BOOST_NO_CWCTYPE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_CWCTYPE."
+#endif
+#ifdef BOOST_NO_DEPENDENT_NESTED_DERIVATIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_DEPENDENT_NESTED_DERIVATIONS."
+#endif
+#ifdef BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS."
+#endif
+#ifdef BOOST_NO_EXCEPTIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_EXCEPTIONS."
+#endif
+#ifdef BOOST_NO_EXCEPTION_STD_NAMESPACE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_EXCEPTION_STD_NAMESPACE."
+#endif
+#ifdef BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS."
+#endif
+#ifdef BOOST_NO_FENV_H
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_FENV_H."
+#endif
+#ifdef BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_FUNCTION_TEMPLATE_ORDERING."
+#endif
+#ifdef BOOST_NO_FUNCTION_TYPE_SPECIALIZATIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_FUNCTION_TYPE_SPECIALIZATIONS."
+#endif
+#ifdef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_INCLASS_MEMBER_INITIALIZATION."
+#endif
+#ifdef BOOST_NO_INTEGRAL_INT64_T
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_INTEGRAL_INT64_T."
+#endif
+#ifdef BOOST_NO_INTRINSIC_WCHAR_T
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_INTRINSIC_WCHAR_T."
+#endif
+#ifdef BOOST_NO_IOSFWD
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_IOSFWD."
+#endif
+#ifdef BOOST_NO_IOSTREAM
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_IOSTREAM."
+#endif
+#ifdef BOOST_NO_IS_ABSTRACT
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_IS_ABSTRACT."
+#endif
+#ifdef BOOST_NO_LIMITS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_LIMITS."
+#endif
+#ifdef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS."
+#endif
+#ifdef BOOST_NO_LONG_LONG
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_LONG_LONG."
+#endif
+#ifdef BOOST_NO_LONG_LONG_NUMERIC_LIMITS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_LONG_LONG_NUMERIC_LIMITS."
+#endif
+#ifdef BOOST_NO_MEMBER_FUNCTION_SPECIALIZATIONS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_MEMBER_FUNCTION_SPECIALIZATIONS."
+#endif
+#ifdef BOOST_NO_MEMBER_TEMPLATES
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_MEMBER_TEMPLATES."
+#endif
+#ifdef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_MEMBER_TEMPLATE_FRIENDS."
+#endif
+#ifdef BOOST_NO_MEMBER_TEMPLATE_KEYWORD
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_MEMBER_TEMPLATE_KEYWORD."
+#endif
+#ifdef BOOST_NO_NESTED_FRIENDSHIP
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_NESTED_FRIENDSHIP."
+#endif
+#ifdef BOOST_NO_OPERATORS_IN_NAMESPACE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_OPERATORS_IN_NAMESPACE."
+#endif
+#ifdef BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS."
+#endif
+#ifdef BOOST_NO_POINTER_TO_MEMBER_CONST
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_POINTER_TO_MEMBER_CONST."
+#endif
+#ifdef BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS."
+#endif
+#ifdef BOOST_NO_PRIVATE_IN_AGGREGATE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_PRIVATE_IN_AGGREGATE."
+#endif
+#ifdef BOOST_NO_RESTRICT_REFERENCES
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_RESTRICT_REFERENCES."
+#endif
+#ifdef BOOST_NO_RTTI
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_RTTI."
+#endif
+#ifdef BOOST_NO_SFINAE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_SFINAE."
+#endif
+#ifdef BOOST_NO_SFINAE_EXPR
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_SFINAE_EXPR."
+#endif
+#ifdef BOOST_NO_STDC_NAMESPACE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STDC_NAMESPACE."
+#endif
+#ifdef BOOST_NO_STD_ALLOCATOR
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_ALLOCATOR."
+#endif
+#ifdef BOOST_NO_STD_DISTANCE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_DISTANCE."
+#endif
+#ifdef BOOST_NO_STD_ITERATOR
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_ITERATOR."
+#endif
+#ifdef BOOST_NO_STD_ITERATOR_TRAITS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_ITERATOR_TRAITS."
+#endif
+#ifdef BOOST_NO_STD_LOCALE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_LOCALE."
+#endif
+#ifdef BOOST_NO_STD_MESSAGES
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_MESSAGES."
+#endif
+#ifdef BOOST_NO_STD_MIN_MAX
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_MIN_MAX."
+#endif
+#ifdef BOOST_NO_STD_OUTPUT_ITERATOR_ASSIGN
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_OUTPUT_ITERATOR_ASSIGN."
+#endif
+#ifdef BOOST_NO_STD_TYPEINFO
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_TYPEINFO."
+#endif
+#ifdef BOOST_NO_STD_USE_FACET
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_USE_FACET."
+#endif
+#ifdef BOOST_NO_STD_WSTREAMBUF
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_WSTREAMBUF."
+#endif
+#ifdef BOOST_NO_STD_WSTRING
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STD_WSTRING."
+#endif
+#ifdef BOOST_NO_STRINGSTREAM
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_STRINGSTREAM."
+#endif
+#ifdef BOOST_NO_TEMPLATED_IOSTREAMS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TEMPLATED_IOSTREAMS."
+#endif
+#ifdef BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS."
+#endif
+#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION."
+#endif
+#ifdef BOOST_NO_TEMPLATE_TEMPLATES
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TEMPLATE_TEMPLATES."
+#endif
+#ifdef BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TWO_PHASE_NAME_LOOKUP."
+#endif
+#ifdef BOOST_NO_TYPEID
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TYPEID."
+#endif
+#ifdef BOOST_NO_TYPENAME_WITH_CTOR
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_TYPENAME_WITH_CTOR."
+#endif
+#ifdef BOOST_NO_UNREACHABLE_RETURN_DETECTION
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_UNREACHABLE_RETURN_DETECTION."
+#endif
+#ifdef BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE."
+#endif
+#ifdef BOOST_NO_USING_TEMPLATE
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_USING_TEMPLATE."
+#endif
+#ifdef BOOST_NO_VOID_RETURNS
+#  error "Your compiler appears not to be fully C++03 compliant.  Detected via defect macro BOOST_NO_VOID_RETURNS."
+#endif

src/boost/config/assert_cxx11.hpp

@@ -0,0 +1,212 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+#include <boost/config/assert_cxx03.hpp>
+
+#ifdef BOOST_NO_CXX11_ADDRESSOF
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_ADDRESSOF."
+#endif
+#ifdef BOOST_NO_CXX11_ALIGNAS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_ALIGNAS."
+#endif
+#ifdef BOOST_NO_CXX11_ALIGNOF
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_ALIGNOF."
+#endif
+#ifdef BOOST_NO_CXX11_ALLOCATOR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_ALLOCATOR."
+#endif
+#ifdef BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_AUTO_DECLARATIONS."
+#endif
+#ifdef BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS."
+#endif
+#ifdef BOOST_NO_CXX11_CHAR16_T
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_CHAR16_T."
+#endif
+#ifdef BOOST_NO_CXX11_CHAR32_T
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_CHAR32_T."
+#endif
+#ifdef BOOST_NO_CXX11_CONSTEXPR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_CONSTEXPR."
+#endif
+#ifdef BOOST_NO_CXX11_DECLTYPE
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_DECLTYPE."
+#endif
+#ifdef BOOST_NO_CXX11_DECLTYPE_N3276
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_DECLTYPE_N3276."
+#endif
+#ifdef BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_DEFAULTED_FUNCTIONS."
+#endif
+#ifdef BOOST_NO_CXX11_DEFAULTED_MOVES
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_DEFAULTED_MOVES."
+#endif
+#ifdef BOOST_NO_CXX11_DELETED_FUNCTIONS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_DELETED_FUNCTIONS."
+#endif
+#ifdef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS."
+#endif
+#ifdef BOOST_NO_CXX11_EXTERN_TEMPLATE
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_EXTERN_TEMPLATE."
+#endif
+#ifdef BOOST_NO_CXX11_FINAL
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_FINAL."
+#endif
+#ifdef BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS."
+#endif
+#ifdef BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_ARRAY
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_ARRAY."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_ATOMIC
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_ATOMIC."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_CHRONO
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_CHRONO."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_CONDITION_VARIABLE."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_EXCEPTION
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_EXCEPTION."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_FORWARD_LIST
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_FORWARD_LIST."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_FUNCTIONAL
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_FUNCTIONAL."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_FUTURE
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_FUTURE."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_INITIALIZER_LIST."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_MUTEX
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_MUTEX."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_RANDOM
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_RANDOM."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_RATIO
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_RATIO."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_REGEX
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_REGEX."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_SYSTEM_ERROR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_SYSTEM_ERROR."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_THREAD
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_THREAD."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_TUPLE
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_TUPLE."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_TYPEINDEX
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_TYPEINDEX."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_TYPE_TRAITS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_TYPE_TRAITS."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_UNORDERED_MAP
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_UNORDERED_MAP."
+#endif
+#ifdef BOOST_NO_CXX11_HDR_UNORDERED_SET
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_HDR_UNORDERED_SET."
+#endif
+#ifdef BOOST_NO_CXX11_INLINE_NAMESPACES
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_INLINE_NAMESPACES."
+#endif
+#ifdef BOOST_NO_CXX11_LAMBDAS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_LAMBDAS."
+#endif
+#ifdef BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS."
+#endif
+#ifdef BOOST_NO_CXX11_NOEXCEPT
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_NOEXCEPT."
+#endif
+#ifdef BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS."
+#endif
+#ifdef BOOST_NO_CXX11_NULLPTR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_NULLPTR."
+#endif
+#ifdef BOOST_NO_CXX11_NUMERIC_LIMITS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_NUMERIC_LIMITS."
+#endif
+#ifdef BOOST_NO_CXX11_OVERRIDE
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_OVERRIDE."
+#endif
+#ifdef BOOST_NO_CXX11_POINTER_TRAITS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_POINTER_TRAITS."
+#endif
+#ifdef BOOST_NO_CXX11_RANGE_BASED_FOR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_RANGE_BASED_FOR."
+#endif
+#ifdef BOOST_NO_CXX11_RAW_LITERALS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_RAW_LITERALS."
+#endif
+#ifdef BOOST_NO_CXX11_REF_QUALIFIERS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_REF_QUALIFIERS."
+#endif
+#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_RVALUE_REFERENCES."
+#endif
+#ifdef BOOST_NO_CXX11_SCOPED_ENUMS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_SCOPED_ENUMS."
+#endif
+#ifdef BOOST_NO_CXX11_SFINAE_EXPR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_SFINAE_EXPR."
+#endif
+#ifdef BOOST_NO_CXX11_SMART_PTR
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_SMART_PTR."
+#endif
+#ifdef BOOST_NO_CXX11_STATIC_ASSERT
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_STATIC_ASSERT."
+#endif
+#ifdef BOOST_NO_CXX11_STD_ALIGN
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_STD_ALIGN."
+#endif
+#ifdef BOOST_NO_CXX11_TEMPLATE_ALIASES
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_TEMPLATE_ALIASES."
+#endif
+#ifdef BOOST_NO_CXX11_THREAD_LOCAL
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_THREAD_LOCAL."
+#endif
+#ifdef BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_TRAILING_RESULT_TYPES."
+#endif
+#ifdef BOOST_NO_CXX11_UNICODE_LITERALS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_UNICODE_LITERALS."
+#endif
+#ifdef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX."
+#endif
+#ifdef BOOST_NO_CXX11_UNRESTRICTED_UNION
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_UNRESTRICTED_UNION."
+#endif
+#ifdef BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_USER_DEFINED_LITERALS."
+#endif
+#ifdef BOOST_NO_CXX11_VARIADIC_MACROS
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_VARIADIC_MACROS."
+#endif
+#ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#  error "Your compiler appears not to be fully C++11 compliant.  Detected via defect macro BOOST_NO_CXX11_VARIADIC_TEMPLATES."
+#endif

src/boost/config/assert_cxx14.hpp

@@ -0,0 +1,47 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+#include <boost/config/assert_cxx11.hpp>
+
+#ifdef BOOST_NO_CXX14_AGGREGATE_NSDMI
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_AGGREGATE_NSDMI."
+#endif
+#ifdef BOOST_NO_CXX14_BINARY_LITERALS
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_BINARY_LITERALS."
+#endif
+#ifdef BOOST_NO_CXX14_CONSTEXPR
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_CONSTEXPR."
+#endif
+#ifdef BOOST_NO_CXX14_DECLTYPE_AUTO
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_DECLTYPE_AUTO."
+#endif
+#ifdef BOOST_NO_CXX14_DIGIT_SEPARATORS
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_DIGIT_SEPARATORS."
+#endif
+#ifdef BOOST_NO_CXX14_GENERIC_LAMBDAS
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_GENERIC_LAMBDAS."
+#endif
+#ifdef BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_HDR_SHARED_MUTEX."
+#endif
+#ifdef BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES."
+#endif
+#ifdef BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION."
+#endif
+#ifdef BOOST_NO_CXX14_STD_EXCHANGE
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_STD_EXCHANGE."
+#endif
+#ifdef BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#  error "Your compiler appears not to be fully C++14 compliant.  Detected via defect macro BOOST_NO_CXX14_VARIABLE_TEMPLATES."
+#endif

src/boost/config/assert_cxx17.hpp

@@ -0,0 +1,62 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+#include <boost/config/assert_cxx14.hpp>
+
+#ifdef BOOST_NO_CXX17_DEDUCTION_GUIDES
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_DEDUCTION_GUIDES."
+#endif
+#ifdef BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_FOLD_EXPRESSIONS."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_ANY
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_ANY."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_CHARCONV
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_CHARCONV."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_EXECUTION
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_EXECUTION."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_FILESYSTEM
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_FILESYSTEM."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_MEMORY_RESOURCE
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_MEMORY_RESOURCE."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_OPTIONAL
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_OPTIONAL."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_STRING_VIEW
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_STRING_VIEW."
+#endif
+#ifdef BOOST_NO_CXX17_HDR_VARIANT
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_HDR_VARIANT."
+#endif
+#ifdef BOOST_NO_CXX17_IF_CONSTEXPR
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_IF_CONSTEXPR."
+#endif
+#ifdef BOOST_NO_CXX17_INLINE_VARIABLES
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_INLINE_VARIABLES."
+#endif
+#ifdef BOOST_NO_CXX17_ITERATOR_TRAITS
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_ITERATOR_TRAITS."
+#endif
+#ifdef BOOST_NO_CXX17_STD_APPLY
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_STD_APPLY."
+#endif
+#ifdef BOOST_NO_CXX17_STD_INVOKE
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_STD_INVOKE."
+#endif
+#ifdef BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#  error "Your compiler appears not to be fully C++17 compliant.  Detected via defect macro BOOST_NO_CXX17_STRUCTURED_BINDINGS."
+#endif

src/boost/config/assert_cxx20.hpp

@@ -0,0 +1,59 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+#include <boost/config/assert_cxx17.hpp>
+
+#ifdef BOOST_NO_CXX20_HDR_BARRIER
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_BARRIER."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_BIT
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_BIT."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_COMPARE
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_COMPARE."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_CONCEPTS
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_CONCEPTS."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_COROUTINE
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_COROUTINE."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_FORMAT
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_FORMAT."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_LATCH
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_LATCH."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_NUMBERS
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_NUMBERS."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_RANGES
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_RANGES."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_SEMAPHORE
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_SEMAPHORE."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_SOURCE_LOCATION
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_SOURCE_LOCATION."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_SPAN
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_SPAN."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_STOP_TOKEN
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_STOP_TOKEN."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_SYNCSTREAM
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_SYNCSTREAM."
+#endif
+#ifdef BOOST_NO_CXX20_HDR_VERSION
+#  error "Your compiler appears not to be fully C++20 compliant.  Detected via defect macro BOOST_NO_CXX20_HDR_VERSION."
+#endif

src/boost/config/assert_cxx23.hpp

@@ -0,0 +1,41 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+#include <boost/config/assert_cxx20.hpp>
+
+#ifdef BOOST_NO_CXX23_HDR_EXPECTED
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_EXPECTED."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_FLAT_MAP
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_FLAT_MAP."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_FLAT_SET
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_FLAT_SET."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_GENERATOR
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_GENERATOR."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_MDSPAN
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_MDSPAN."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_PRINT
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_PRINT."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_SPANSTREAM
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_SPANSTREAM."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_STACKTRACE
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_STACKTRACE."
+#endif
+#ifdef BOOST_NO_CXX23_HDR_STDFLOAT
+#  error "Your compiler appears not to be fully C++23 compliant.  Detected via defect macro BOOST_NO_CXX23_HDR_STDFLOAT."
+#endif

src/boost/config/assert_cxx98.hpp

@@ -0,0 +1,23 @@
+//  This file was automatically generated on Wed Mar  3 08:46:11 2021
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-4.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#include <boost/config.hpp>
+#include <boost/config/assert_cxx17.hpp>
+
+#ifdef BOOST_NO_CXX98_BINDERS
+#  error "Your compiler appears not to be fully C++98 compliant.  Detected via defect macro BOOST_NO_CXX98_BINDERS."
+#endif
+#ifdef BOOST_NO_CXX98_FUNCTION_BASE
+#  error "Your compiler appears not to be fully C++98 compliant.  Detected via defect macro BOOST_NO_CXX98_FUNCTION_BASE."
+#endif
+#ifdef BOOST_NO_CXX98_RANDOM_SHUFFLE
+#  error "Your compiler appears not to be fully C++98 compliant.  Detected via defect macro BOOST_NO_CXX98_RANDOM_SHUFFLE."
+#endif

src/boost/config/auto_link.hpp

@@ -0,0 +1,525 @@
+//  (C) Copyright John Maddock 2003.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         auto_link.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Automatic library inclusion for Borland/Microsoft compilers.
+  */
+
+/*************************************************************************
+
+USAGE:
+~~~~~~
+
+Before including this header you must define one or more of define the following macros:
+
+BOOST_LIB_NAME:           Required: A string containing the basename of the library,
+                          for example boost_regex.
+BOOST_LIB_TOOLSET:        Optional: the base name of the toolset.
+BOOST_DYN_LINK:           Optional: when set link to dll rather than static library.
+BOOST_LIB_DIAGNOSTIC:     Optional: when set the header will print out the name
+                          of the library selected (useful for debugging).
+BOOST_AUTO_LINK_NOMANGLE: Specifies that we should link to BOOST_LIB_NAME.lib,
+                          rather than a mangled-name version.
+BOOST_AUTO_LINK_TAGGED:   Specifies that we link to libraries built with the --layout=tagged option.
+                          This is essentially the same as the default name-mangled version, but without
+                          the compiler name and version, or the Boost version.  Just the build options.
+BOOST_AUTO_LINK_SYSTEM:   Specifies that we link to libraries built with the --layout=system option.
+                          This is essentially the same as the non-name-mangled version, but with
+                          the prefix to differentiate static and dll builds
+
+These macros will be undef'ed at the end of the header, further this header
+has no include guards - so be sure to include it only once from your library!
+
+Algorithm:
+~~~~~~~~~~
+
+Libraries for Borland and Microsoft compilers are automatically
+selected here, the name of the lib is selected according to the following
+formula:
+
+BOOST_LIB_PREFIX
+   + BOOST_LIB_NAME
+   + "_"
+   + BOOST_LIB_TOOLSET
+   + BOOST_LIB_THREAD_OPT
+   + BOOST_LIB_RT_OPT
+   + BOOST_LIB_ARCH_AND_MODEL_OPT
+   "-"
+   + BOOST_LIB_VERSION
+   + BOOST_LIB_SUFFIX
+
+These are defined as:
+
+BOOST_LIB_PREFIX:     "lib" for static libraries otherwise "".
+
+BOOST_LIB_NAME:       The base name of the lib ( for example boost_regex).
+
+BOOST_LIB_TOOLSET:    The compiler toolset name (vc6, vc7, bcb5 etc).
+
+BOOST_LIB_THREAD_OPT: "-mt" for multithread builds, otherwise nothing.
+
+BOOST_LIB_RT_OPT:     A suffix that indicates the runtime library used,
+                      contains one or more of the following letters after
+                      a hyphen:
+
+                      s      static runtime (dynamic if not present).
+                      g      debug/diagnostic runtime (release if not present).
+                      y      Python debug/diagnostic runtime (release if not present).
+                      d      debug build (release if not present).
+                      p      STLport build.
+                      n      STLport build without its IOStreams.
+
+BOOST_LIB_ARCH_AND_MODEL_OPT: The architecture and address model
+                              (-x32 or -x64 for x86/32 and x86/64 respectively)
+
+BOOST_LIB_VERSION:    The Boost version, in the form x_y, for Boost version x.y.
+
+BOOST_LIB_SUFFIX:     Static/import libraries extension (".lib", ".a") for the compiler.
+
+***************************************************************************/
+
+#ifdef __cplusplus
+#  ifndef BOOST_CONFIG_HPP
+#     include <boost/config.hpp>
+#  endif
+#elif defined(_MSC_VER) && !defined(__MWERKS__) && !defined(__EDG_VERSION__)
+//
+// C language compatability (no, honestly)
+//
+#  define BOOST_MSVC _MSC_VER
+#  define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
+#  define BOOST_DO_STRINGIZE(X) #X
+#endif
+//
+// Only include what follows for known and supported compilers:
+//
+#if defined(BOOST_MSVC) \
+    || defined(BOOST_EMBTC_WINDOWS) \
+    || defined(BOOST_BORLANDC) \
+    || (defined(__MWERKS__) && defined(_WIN32) && (__MWERKS__ >= 0x3000)) \
+    || (defined(__ICL) && defined(_MSC_EXTENSIONS) && (_MSC_VER >= 1200)) \
+    || (defined(BOOST_CLANG) && defined(BOOST_WINDOWS) && defined(_MSC_VER) && (__clang_major__ >= 4))
+
+#ifndef BOOST_VERSION_HPP
+#  include <boost/version.hpp>
+#endif
+
+#ifndef BOOST_LIB_NAME
+#  error "Macro BOOST_LIB_NAME not set (internal error)"
+#endif
+
+//
+// error check:
+//
+#if defined(__MSVC_RUNTIME_CHECKS) && !defined(_DEBUG)
+#  pragma message("Using the /RTC option without specifying a debug runtime will lead to linker errors")
+#  pragma message("Hint: go to the code generation options and switch to one of the debugging runtimes")
+#  error "Incompatible build options"
+#endif
+//
+// select toolset if not defined already:
+//
+#ifndef BOOST_LIB_TOOLSET
+#  if defined(BOOST_MSVC) && (BOOST_MSVC < 1200)
+    // Note: no compilers before 1200 are supported
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1300)
+
+#    ifdef UNDER_CE
+       // eVC4:
+#      define BOOST_LIB_TOOLSET "evc4"
+#    else
+       // vc6:
+#      define BOOST_LIB_TOOLSET "vc6"
+#    endif
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1310)
+
+     // vc7:
+#    define BOOST_LIB_TOOLSET "vc7"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1400)
+
+     // vc71:
+#    define BOOST_LIB_TOOLSET "vc71"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1500)
+
+     // vc80:
+#    define BOOST_LIB_TOOLSET "vc80"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1600)
+
+     // vc90:
+#    define BOOST_LIB_TOOLSET "vc90"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1700)
+
+     // vc10:
+#    define BOOST_LIB_TOOLSET "vc100"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1800)
+
+     // vc11:
+#    define BOOST_LIB_TOOLSET "vc110"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1900)
+
+     // vc12:
+#    define BOOST_LIB_TOOLSET "vc120"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1910)
+
+     // vc14:
+#    define BOOST_LIB_TOOLSET "vc140"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1920)
+
+     // vc14.1:
+#    define BOOST_LIB_TOOLSET "vc141"
+
+#  elif defined(BOOST_MSVC) && (BOOST_MSVC < 1930)
+
+     // vc14.2:
+#    define BOOST_LIB_TOOLSET "vc142"
+
+#  elif defined(BOOST_MSVC)
+
+     // vc14.3:
+#    define BOOST_LIB_TOOLSET "vc143"
+
+#  elif defined(BOOST_EMBTC_WINDOWS)
+
+     // Embarcadero Clang based compilers:
+#    define BOOST_LIB_TOOLSET "embtc"
+
+#  elif defined(BOOST_BORLANDC)
+
+     // CBuilder 6:
+#    define BOOST_LIB_TOOLSET "bcb"
+
+#  elif defined(__ICL)
+
+     // Intel C++, no version number:
+#    define BOOST_LIB_TOOLSET "iw"
+
+#  elif defined(__MWERKS__) && (__MWERKS__ <= 0x31FF )
+
+     // Metrowerks CodeWarrior 8.x
+#    define BOOST_LIB_TOOLSET "cw8"
+
+#  elif defined(__MWERKS__) && (__MWERKS__ <= 0x32FF )
+
+     // Metrowerks CodeWarrior 9.x
+#    define BOOST_LIB_TOOLSET "cw9"
+
+#  elif defined(BOOST_CLANG) && defined(BOOST_WINDOWS) && defined(_MSC_VER) && (__clang_major__ >= 4)
+
+     // Clang on Windows
+#    define BOOST_LIB_TOOLSET "clangw" BOOST_STRINGIZE(__clang_major__)
+
+#  endif
+#endif // BOOST_LIB_TOOLSET
+
+//
+// select thread opt:
+//
+#if defined(_MT) || defined(__MT__)
+#  define BOOST_LIB_THREAD_OPT "-mt"
+#else
+#  define BOOST_LIB_THREAD_OPT
+#endif
+
+#if defined(_MSC_VER) || defined(__MWERKS__)
+
+#  ifdef _DLL
+
+#     if (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)) && (defined(_STLP_OWN_IOSTREAMS) || defined(__STL_OWN_IOSTREAMS))
+
+#        if defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-gydp"
+#        elif defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))
+#            define BOOST_LIB_RT_OPT "-gdp"
+#        elif defined(_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-gydp"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        elif defined(_DEBUG)
+#            define BOOST_LIB_RT_OPT "-gdp"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        else
+#            define BOOST_LIB_RT_OPT "-p"
+#        endif
+
+#     elif defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
+
+#        if defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-gydpn"
+#        elif defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))
+#            define BOOST_LIB_RT_OPT "-gdpn"
+#        elif defined(_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-gydpn"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        elif defined(_DEBUG)
+#            define BOOST_LIB_RT_OPT "-gdpn"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        else
+#            define BOOST_LIB_RT_OPT "-pn"
+#        endif
+
+#     else
+
+#        if defined(_DEBUG) && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-gyd"
+#        elif defined(_DEBUG)
+#            define BOOST_LIB_RT_OPT "-gd"
+#        else
+#            define BOOST_LIB_RT_OPT
+#        endif
+
+#     endif
+
+#  else
+
+#     if (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)) && (defined(_STLP_OWN_IOSTREAMS) || defined(__STL_OWN_IOSTREAMS))
+
+#        if defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-sgydp"
+#        elif defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))
+#            define BOOST_LIB_RT_OPT "-sgdp"
+#        elif defined(_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#             define BOOST_LIB_RT_OPT "-sgydp"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        elif defined(_DEBUG)
+#             define BOOST_LIB_RT_OPT "-sgdp"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        else
+#            define BOOST_LIB_RT_OPT "-sp"
+#        endif
+
+#     elif defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
+
+#        if defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#            define BOOST_LIB_RT_OPT "-sgydpn"
+#        elif defined(_DEBUG) && (defined(__STL_DEBUG) || defined(_STLP_DEBUG))
+#            define BOOST_LIB_RT_OPT "-sgdpn"
+#        elif defined(_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#             define BOOST_LIB_RT_OPT "-sgydpn"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        elif defined(_DEBUG)
+#             define BOOST_LIB_RT_OPT "-sgdpn"
+#            pragma message("warning: STLport debug versions are built with /D_STLP_DEBUG=1")
+#            error "Build options aren't compatible with pre-built libraries"
+#        else
+#            define BOOST_LIB_RT_OPT "-spn"
+#        endif
+
+#     else
+
+#        if defined(_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#             define BOOST_LIB_RT_OPT "-sgyd"
+#        elif defined(_DEBUG)
+#             define BOOST_LIB_RT_OPT "-sgd"
+#        else
+#            define BOOST_LIB_RT_OPT "-s"
+#        endif
+
+#     endif
+
+#  endif
+
+#elif defined(BOOST_EMBTC_WINDOWS)
+
+#  ifdef _RTLDLL
+
+#     if defined(_DEBUG)
+#         define BOOST_LIB_RT_OPT "-d"
+#     else
+#         define BOOST_LIB_RT_OPT
+#     endif
+
+#  else
+
+#     if defined(_DEBUG)
+#         define BOOST_LIB_RT_OPT "-sd"
+#     else
+#         define BOOST_LIB_RT_OPT "-s"
+#     endif
+
+#  endif
+
+#elif defined(BOOST_BORLANDC)
+
+//
+// figure out whether we want the debug builds or not:
+//
+#if BOOST_BORLANDC > 0x561
+#pragma defineonoption BOOST_BORLAND_DEBUG -v
+#endif
+//
+// sanity check:
+//
+#if defined(__STL_DEBUG) || defined(_STLP_DEBUG)
+#error "Pre-built versions of the Boost libraries are not provided in STLport-debug form"
+#endif
+
+#  ifdef _RTLDLL
+
+#     if defined(BOOST_BORLAND_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#         define BOOST_LIB_RT_OPT "-yd"
+#     elif defined(BOOST_BORLAND_DEBUG)
+#         define BOOST_LIB_RT_OPT "-d"
+#     elif defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#         define BOOST_LIB_RT_OPT "-y"
+#     else
+#         define BOOST_LIB_RT_OPT
+#     endif
+
+#  else
+
+#     if defined(BOOST_BORLAND_DEBUG)\
+               && defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#         define BOOST_LIB_RT_OPT "-syd"
+#     elif defined(BOOST_BORLAND_DEBUG)
+#         define BOOST_LIB_RT_OPT "-sd"
+#     elif defined(BOOST_DEBUG_PYTHON) && defined(BOOST_LINKING_PYTHON)
+#         define BOOST_LIB_RT_OPT "-sy"
+#     else
+#         define BOOST_LIB_RT_OPT "-s"
+#     endif
+
+#  endif
+
+#endif
+
+//
+// BOOST_LIB_ARCH_AND_MODEL_OPT
+//
+
+#if defined( _M_IX86 )
+#  define BOOST_LIB_ARCH_AND_MODEL_OPT "-x32"
+#elif defined( _M_X64 )
+#  define BOOST_LIB_ARCH_AND_MODEL_OPT "-x64"
+#elif defined( _M_ARM )
+#  define BOOST_LIB_ARCH_AND_MODEL_OPT "-a32"
+#elif defined( _M_ARM64 )
+#  define BOOST_LIB_ARCH_AND_MODEL_OPT "-a64"
+#endif
+
+//
+// select linkage opt:
+//
+#if (defined(_DLL) || defined(_RTLDLL)) && defined(BOOST_DYN_LINK)
+#  define BOOST_LIB_PREFIX
+#elif defined(BOOST_DYN_LINK)
+#  error "Mixing a dll boost library with a static runtime is a really bad idea..."
+#else
+#  define BOOST_LIB_PREFIX "lib"
+#endif
+
+//
+// now include the lib:
+//
+#if defined(BOOST_LIB_NAME) \
+      && defined(BOOST_LIB_PREFIX) \
+      && defined(BOOST_LIB_TOOLSET) \
+      && defined(BOOST_LIB_THREAD_OPT) \
+      && defined(BOOST_LIB_RT_OPT) \
+      && defined(BOOST_LIB_ARCH_AND_MODEL_OPT) \
+      && defined(BOOST_LIB_VERSION)
+
+#if defined(BOOST_EMBTC_WIN64)
+#  define BOOST_LIB_SUFFIX ".a"
+#else
+#  define BOOST_LIB_SUFFIX ".lib"
+#endif
+
+#ifdef BOOST_AUTO_LINK_NOMANGLE
+#  pragma comment(lib, BOOST_STRINGIZE(BOOST_LIB_NAME) BOOST_LIB_SUFFIX)
+#  ifdef BOOST_LIB_DIAGNOSTIC
+#     pragma message ("Linking to lib file: " BOOST_STRINGIZE(BOOST_LIB_NAME) BOOST_LIB_SUFFIX)
+#  endif
+#elif defined(BOOST_AUTO_LINK_TAGGED)
+#  pragma comment(lib, BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) BOOST_LIB_THREAD_OPT BOOST_LIB_RT_OPT BOOST_LIB_ARCH_AND_MODEL_OPT BOOST_LIB_SUFFIX)
+#  ifdef BOOST_LIB_DIAGNOSTIC
+#     pragma message ("Linking to lib file: " BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) BOOST_LIB_THREAD_OPT BOOST_LIB_RT_OPT BOOST_LIB_ARCH_AND_MODEL_OPT BOOST_LIB_SUFFIX)
+#  endif
+#elif defined(BOOST_AUTO_LINK_SYSTEM)
+#  pragma comment(lib, BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) BOOST_LIB_SUFFIX)
+#  ifdef BOOST_LIB_DIAGNOSTIC
+#     pragma message ("Linking to lib file: " BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) BOOST_LIB_SUFFIX)
+#  endif
+#elif defined(BOOST_LIB_BUILDID)
+#  pragma comment(lib, BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) "-" BOOST_LIB_TOOLSET BOOST_LIB_THREAD_OPT BOOST_LIB_RT_OPT BOOST_LIB_ARCH_AND_MODEL_OPT "-" BOOST_LIB_VERSION "-" BOOST_STRINGIZE(BOOST_LIB_BUILDID) BOOST_LIB_SUFFIX)
+#  ifdef BOOST_LIB_DIAGNOSTIC
+#     pragma message ("Linking to lib file: " BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) "-" BOOST_LIB_TOOLSET BOOST_LIB_THREAD_OPT BOOST_LIB_RT_OPT BOOST_LIB_ARCH_AND_MODEL_OPT "-" BOOST_LIB_VERSION "-" BOOST_STRINGIZE(BOOST_LIB_BUILDID) BOOST_LIB_SUFFIX)
+#  endif
+#else
+#  pragma comment(lib, BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) "-" BOOST_LIB_TOOLSET BOOST_LIB_THREAD_OPT BOOST_LIB_RT_OPT BOOST_LIB_ARCH_AND_MODEL_OPT "-" BOOST_LIB_VERSION BOOST_LIB_SUFFIX)
+#  ifdef BOOST_LIB_DIAGNOSTIC
+#     pragma message ("Linking to lib file: " BOOST_LIB_PREFIX BOOST_STRINGIZE(BOOST_LIB_NAME) "-" BOOST_LIB_TOOLSET BOOST_LIB_THREAD_OPT BOOST_LIB_RT_OPT BOOST_LIB_ARCH_AND_MODEL_OPT "-" BOOST_LIB_VERSION BOOST_LIB_SUFFIX)
+#  endif
+#endif
+
+#else
+#  error "some required macros where not defined (internal logic error)."
+#endif
+
+
+#endif // _MSC_VER || __BORLANDC__
+
+//
+// finally undef any macros we may have set:
+//
+#ifdef BOOST_LIB_PREFIX
+#  undef BOOST_LIB_PREFIX
+#endif
+#if defined(BOOST_LIB_NAME)
+#  undef BOOST_LIB_NAME
+#endif
+// Don't undef this one: it can be set by the user and should be the 
+// same for all libraries:
+//#if defined(BOOST_LIB_TOOLSET)
+//#  undef BOOST_LIB_TOOLSET
+//#endif
+#if defined(BOOST_LIB_THREAD_OPT)
+#  undef BOOST_LIB_THREAD_OPT
+#endif
+#if defined(BOOST_LIB_RT_OPT)
+#  undef BOOST_LIB_RT_OPT
+#endif
+#if defined(BOOST_LIB_ARCH_AND_MODEL_OPT)
+#  undef BOOST_LIB_ARCH_AND_MODEL_OPT
+#endif
+#if defined(BOOST_LIB_LINK_OPT)
+#  undef BOOST_LIB_LINK_OPT
+#endif
+#if defined(BOOST_LIB_DEBUG_OPT)
+#  undef BOOST_LIB_DEBUG_OPT
+#endif
+#if defined(BOOST_DYN_LINK)
+#  undef BOOST_DYN_LINK
+#endif
+#if defined(BOOST_LIB_SUFFIX)
+#  undef BOOST_LIB_SUFFIX
+#endif

src/boost/config/compiler/borland.hpp

@@ -0,0 +1,339 @@
+//  (C) Copyright John Maddock 2001 - 2003.
+//  (C) Copyright David Abrahams 2002 - 2003.
+//  (C) Copyright Aleksey Gurtovoy 2002.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Borland C++ compiler setup:
+
+//
+// versions check:
+// we don't support Borland prior to version 5.4:
+#if __BORLANDC__ < 0x540
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+
+// last known compiler version:
+#if (__BORLANDC__ > 0x613)
+//#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+//#  else
+//#     pragma message( "boost: Unknown compiler version - please run the configure tests and report the results")
+//#  endif
+#elif (__BORLANDC__ == 0x600)
+#  error "CBuilderX preview compiler is no longer supported"
+#endif
+
+//
+// Support macros to help with standard library detection
+#if (__BORLANDC__ < 0x560) || defined(_USE_OLD_RW_STL)
+#  define BOOST_BCB_WITH_ROGUE_WAVE
+#elif __BORLANDC__ < 0x570
+#  define BOOST_BCB_WITH_STLPORT
+#else
+#  define BOOST_BCB_WITH_DINKUMWARE
+#endif
+
+//
+// Version 5.0 and below:
+#   if __BORLANDC__ <= 0x0550
+// Borland C++Builder 4 and 5:
+#     define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#     if __BORLANDC__ == 0x0550
+// Borland C++Builder 5, command-line compiler 5.5:
+#       define BOOST_NO_OPERATORS_IN_NAMESPACE
+#     endif
+// Variadic macros do not exist for C++ Builder versions 5 and below
+#define BOOST_NO_CXX11_VARIADIC_MACROS
+#   endif
+
+// Version 5.51 and below:
+#if (__BORLANDC__ <= 0x551)
+#  define BOOST_NO_CV_SPECIALIZATIONS
+#  define BOOST_NO_CV_VOID_SPECIALIZATIONS
+#  define BOOST_NO_DEDUCED_TYPENAME
+// workaround for missing WCHAR_MAX/WCHAR_MIN:
+#ifdef __cplusplus
+#include <climits>
+#include <cwchar>
+#else
+#include <limits.h>
+#include <wchar.h>
+#endif // __cplusplus
+#ifndef WCHAR_MAX
+#  define WCHAR_MAX 0xffff
+#endif
+#ifndef WCHAR_MIN
+#  define WCHAR_MIN 0
+#endif
+#endif
+
+// Borland C++ Builder 6 and below:
+#if (__BORLANDC__ <= 0x564)
+
+#  if defined(NDEBUG) && defined(__cplusplus)
+      // fix broken <cstring> so that Boost.test works:
+#     include <cstring>
+#     undef strcmp
+#  endif
+   // fix broken errno declaration:
+#  include <errno.h>
+#  ifndef errno
+#     define errno errno
+#  endif
+
+#endif
+
+//
+// new bug in 5.61:
+#if (__BORLANDC__ >= 0x561) && (__BORLANDC__ <= 0x580)
+   // this seems to be needed by the command line compiler, but not the IDE:
+#  define BOOST_NO_MEMBER_FUNCTION_SPECIALIZATIONS
+#endif
+
+// Borland C++ Builder 2006 Update 2 and below:
+#if (__BORLANDC__ <= 0x582)
+#  define BOOST_NO_SFINAE
+#  define BOOST_BCB_PARTIAL_SPECIALIZATION_BUG
+#  define BOOST_NO_TEMPLATE_TEMPLATES
+
+#  define BOOST_NO_PRIVATE_IN_AGGREGATE
+
+#  ifdef _WIN32
+#     define BOOST_NO_SWPRINTF
+#  elif defined(linux) || defined(__linux__) || defined(__linux)
+      // we should really be able to do without this
+      // but the wcs* functions aren't imported into std::
+#     define BOOST_NO_STDC_NAMESPACE
+      // _CPPUNWIND doesn't get automatically set for some reason:
+#     pragma defineonoption BOOST_CPPUNWIND -x
+#  endif
+#endif
+
+#if (__BORLANDC__ <= 0x613)  // Beman has asked Alisdair for more info
+   // we shouldn't really need this - but too many things choke
+   // without it, this needs more investigation:
+#  define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+#  define BOOST_NO_IS_ABSTRACT
+#  define BOOST_NO_FUNCTION_TYPE_SPECIALIZATIONS
+#  define BOOST_NO_USING_TEMPLATE
+#  define BOOST_SP_NO_SP_CONVERTIBLE
+
+// Temporary workaround
+#define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
+#endif
+
+// Borland C++ Builder 2008 and below:
+#  define BOOST_NO_INTEGRAL_INT64_T
+#  define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
+#  define BOOST_NO_DEPENDENT_NESTED_DERIVATIONS
+#  define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#  define BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE
+#  define BOOST_NO_NESTED_FRIENDSHIP
+#  define BOOST_NO_TYPENAME_WITH_CTOR
+#if (__BORLANDC__ < 0x600)
+#  define BOOST_ILLEGAL_CV_REFERENCES
+#endif
+
+//
+//  Positive Feature detection
+//
+// Borland C++ Builder 2008 and below:
+#if (__BORLANDC__ >= 0x599)
+#  pragma defineonoption BOOST_CODEGEAR_0X_SUPPORT -Ax
+#endif
+//
+// C++0x Macros:
+//
+#if !defined( BOOST_CODEGEAR_0X_SUPPORT ) || (__BORLANDC__ < 0x610)
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#  define BOOST_NO_CXX11_DECLTYPE
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#  define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#else
+#  define BOOST_HAS_ALIGNOF
+#  define BOOST_HAS_CHAR16_T
+#  define BOOST_HAS_CHAR32_T
+#  define BOOST_HAS_DECLTYPE
+#  define BOOST_HAS_EXPLICIT_CONVERSION_OPS
+#  define BOOST_HAS_REF_QUALIFIER
+#  define BOOST_HAS_RVALUE_REFS
+#  define BOOST_HAS_STATIC_ASSERT
+#endif
+
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DEFAULTED_MOVES
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS    // UTF-8 still not supported
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+#if __BORLANDC__ >= 0x590
+#  define BOOST_HAS_TR1_HASH
+
+#  define BOOST_HAS_MACRO_USE_FACET
+#endif
+
+//
+// Post 0x561 we have long long and stdint.h:
+#if __BORLANDC__ >= 0x561
+#  ifndef __NO_LONG_LONG
+#     define BOOST_HAS_LONG_LONG
+#  else
+#     define BOOST_NO_LONG_LONG
+#  endif
+   // On non-Win32 platforms let the platform config figure this out:
+#  ifdef _WIN32
+#      define BOOST_HAS_STDINT_H
+#  endif
+#endif
+
+// Borland C++Builder 6 defaults to using STLPort.  If _USE_OLD_RW_STL is
+// defined, then we have 0x560 or greater with the Rogue Wave implementation
+// which presumably has the std::DBL_MAX bug.
+#if defined( BOOST_BCB_WITH_ROGUE_WAVE )
+// <climits> is partly broken, some macros define symbols that are really in
+// namespace std, so you end up having to use illegal constructs like
+// std::DBL_MAX, as a fix we'll just include float.h and have done with:
+#include <float.h>
+#endif
+//
+// __int64:
+//
+#if (__BORLANDC__ >= 0x530) && !defined(__STRICT_ANSI__)
+#  define BOOST_HAS_MS_INT64
+#endif
+//
+// check for exception handling support:
+//
+#if !defined(_CPPUNWIND) && !defined(BOOST_CPPUNWIND) && !defined(__EXCEPTIONS) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+//
+// all versions have a <dirent.h>:
+//
+#ifndef __STRICT_ANSI__
+#  define BOOST_HAS_DIRENT_H
+#endif
+//
+// all versions support __declspec:
+//
+#if defined(__STRICT_ANSI__)
+// config/platform/win32.hpp will define BOOST_SYMBOL_EXPORT, etc., unless already defined
+#  define BOOST_SYMBOL_EXPORT
+#endif
+//
+// ABI fixing headers:
+//
+#if __BORLANDC__ != 0x600 // not implemented for version 6 compiler yet
+#ifndef BOOST_ABI_PREFIX
+#  define BOOST_ABI_PREFIX "boost/config/abi/borland_prefix.hpp"
+#endif
+#ifndef BOOST_ABI_SUFFIX
+#  define BOOST_ABI_SUFFIX "boost/config/abi/borland_suffix.hpp"
+#endif
+#endif
+//
+// Disable Win32 support in ANSI mode:
+//
+#if __BORLANDC__ < 0x600
+#  pragma defineonoption BOOST_DISABLE_WIN32 -A
+#elif defined(__STRICT_ANSI__)
+#  define BOOST_DISABLE_WIN32
+#endif
+//
+// MSVC compatibility mode does some nasty things:
+// TODO: look up if this doesn't apply to the whole 12xx range
+//
+#if defined(_MSC_VER) && (_MSC_VER <= 1200)
+#  define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
+#  define BOOST_NO_VOID_RETURNS
+#endif
+
+// Borland did not implement value-initialization completely, as I reported
+// in 2007, Borland Report 51854, "Value-initialization: POD struct should be
+// zero-initialized", http://qc.embarcadero.com/wc/qcmain.aspx?d=51854
+// See also: http://www.boost.org/libs/utility/value_init.htm#compiler_issues
+// (Niels Dekker, LKEB, April 2010)
+#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+
+#define BOOST_BORLANDC __BORLANDC__
+#define BOOST_COMPILER "Classic Borland C++ version " BOOST_STRINGIZE(__BORLANDC__)

src/boost/config/compiler/clang.hpp

@@ -0,0 +1,366 @@
+// (C) Copyright Douglas Gregor 2010
+//
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+// Clang compiler setup.
+
+#define BOOST_HAS_PRAGMA_ONCE
+
+// Detecting `-fms-extension` compiler flag assuming that _MSC_VER defined when that flag is used.
+#if defined (_MSC_VER) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 4))
+#   define BOOST_HAS_PRAGMA_DETECT_MISMATCH
+#endif
+
+// When compiling with clang before __has_extension was defined,
+// even if one writes 'defined(__has_extension) && __has_extension(xxx)',
+// clang reports a compiler error. So the only workaround found is:
+
+#ifndef __has_extension
+#define __has_extension __has_feature
+#endif
+
+#ifndef __has_attribute
+#define __has_attribute(x) 0
+#endif
+
+#ifndef __has_cpp_attribute
+#define __has_cpp_attribute(x) 0
+#endif
+
+#if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+
+#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_RTTI)
+#  define BOOST_NO_RTTI
+#endif
+
+#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_TYPEID)
+#  define BOOST_NO_TYPEID
+#endif
+
+#if !__has_feature(cxx_thread_local)
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+
+#ifdef __is_identifier
+#if !__is_identifier(__int64) && !defined(__GNUC__)
+#  define BOOST_HAS_MS_INT64
+#endif
+#endif
+
+#if __has_include(<stdint.h>)
+#  define BOOST_HAS_STDINT_H
+#endif
+
+#if (defined(linux) || defined(__linux) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__)) && !defined(_CRAYC)
+#if (__clang_major__ >= 4) && defined(__has_include)
+#if __has_include(<quadmath.h>)
+#  define BOOST_HAS_FLOAT128
+#endif
+#endif
+#endif
+
+
+#define BOOST_HAS_NRVO
+
+// Branch prediction hints
+#if !defined (__c2__) && defined(__has_builtin)
+#if __has_builtin(__builtin_expect)
+#define BOOST_LIKELY(x) __builtin_expect(x, 1)
+#define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
+#endif
+#endif
+
+// Clang supports "long long" in all compilation modes.
+#define BOOST_HAS_LONG_LONG
+
+//
+// We disable this if the compiler is really nvcc with C++03 as it
+// doesn't actually support __int128 as of CUDA_VERSION=7500
+// even though it defines __SIZEOF_INT128__.
+// See https://svn.boost.org/trac/boost/ticket/10418
+//     https://svn.boost.org/trac/boost/ticket/11852
+// Only re-enable this for nvcc if you're absolutely sure
+// of the circumstances under which it's supported.
+// Similarly __SIZEOF_INT128__ is defined when targetting msvc
+// compatibility even though the required support functions are absent.
+//
+#if defined(__CUDACC__)
+#  if defined(BOOST_GCC_CXX11)
+#    define BOOST_NVCC_CXX11
+#  else
+#    define BOOST_NVCC_CXX03
+#  endif
+#endif
+
+#if defined(__SIZEOF_INT128__) && !defined(BOOST_NVCC_CXX03) && !defined(_MSC_VER)
+#  define BOOST_HAS_INT128
+#endif
+
+
+//
+// Dynamic shared object (DSO) and dynamic-link library (DLL) support
+//
+#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__CYGWIN__)
+#  define BOOST_HAS_DECLSPEC
+#  define BOOST_SYMBOL_EXPORT __attribute__((__dllexport__))
+#  define BOOST_SYMBOL_IMPORT __attribute__((__dllimport__))
+#else
+#  define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
+#  define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
+#  define BOOST_SYMBOL_IMPORT
+#endif
+
+//
+// The BOOST_FALLTHROUGH macro can be used to annotate implicit fall-through
+// between switch labels.
+//
+#if __cplusplus >= 201103L && defined(__has_warning)
+#  if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
+#    define BOOST_FALLTHROUGH [[clang::fallthrough]]
+#  endif
+#endif
+
+#if !__has_feature(cxx_auto_type)
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#endif
+
+//
+// Currently clang on Windows using VC++ RTL does not support C++11's char16_t or char32_t
+//
+#if (defined(_MSC_VER) && (_MSC_VER < 1900)) || !(defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L)
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#endif
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1800) && !defined(__GNUC__)
+#define BOOST_HAS_EXPM1
+#define BOOST_HAS_LOG1P
+#endif
+
+#if !__has_feature(cxx_constexpr)
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+
+#if !__has_feature(cxx_decltype)
+#  define BOOST_NO_CXX11_DECLTYPE
+#endif
+
+#if !__has_feature(cxx_decltype_incomplete_return_types)
+#  define BOOST_NO_CXX11_DECLTYPE_N3276
+#endif
+
+#if !__has_feature(cxx_defaulted_functions)
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#endif
+
+#if !__has_feature(cxx_deleted_functions)
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#endif
+
+#if !__has_feature(cxx_explicit_conversions)
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#endif
+
+#if !__has_feature(cxx_default_function_template_args)
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#endif
+
+#if !__has_feature(cxx_generalized_initializers)
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#endif
+
+#if !__has_feature(cxx_lambdas)
+#  define BOOST_NO_CXX11_LAMBDAS
+#endif
+
+#if !__has_feature(cxx_local_type_template_args)
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#endif
+
+#if !__has_feature(cxx_noexcept)
+#  define BOOST_NO_CXX11_NOEXCEPT
+#endif
+
+#if !__has_feature(cxx_nullptr)
+#  define BOOST_NO_CXX11_NULLPTR
+#endif
+
+#if !__has_feature(cxx_range_for)
+#  define BOOST_NO_CXX11_RANGE_BASED_FOR
+#endif
+
+#if !__has_feature(cxx_raw_string_literals)
+#  define BOOST_NO_CXX11_RAW_LITERALS
+#endif
+
+#if !__has_feature(cxx_reference_qualified_functions)
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#endif
+
+#if !__has_feature(cxx_generalized_initializers)
+#  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#endif
+
+#if !__has_feature(cxx_rvalue_references)
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+
+#if !__has_feature(cxx_strong_enums)
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+
+#if !__has_feature(cxx_static_assert)
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+
+#if !__has_feature(cxx_alias_templates)
+#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#endif
+
+#if !__has_feature(cxx_unicode_literals)
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#endif
+
+#if !__has_feature(cxx_variadic_templates)
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+
+#if !__has_feature(cxx_user_literals)
+#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#endif
+
+#if !__has_feature(cxx_alignas)
+#  define BOOST_NO_CXX11_ALIGNAS
+#endif
+
+#if !__has_feature(cxx_alignof)
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
+#if !__has_feature(cxx_trailing_return)
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#endif
+
+#if !__has_feature(cxx_inline_namespaces)
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#endif
+
+#if !__has_feature(cxx_override_control)
+#  define BOOST_NO_CXX11_FINAL
+#  define BOOST_NO_CXX11_OVERRIDE
+#endif
+
+#if !__has_feature(cxx_unrestricted_unions)
+#  define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#endif
+
+#if !(__has_feature(__cxx_binary_literals__) || __has_extension(__cxx_binary_literals__))
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+
+#if !__has_feature(__cxx_decltype_auto__)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+
+#if !__has_feature(__cxx_aggregate_nsdmi__)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+
+#if !__has_feature(__cxx_init_captures__)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+
+#if !__has_feature(__cxx_generic_lambdas__)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+
+// clang < 3.5 has a defect with dependent type, like following.
+//
+//  template <class T>
+//  constexpr typename enable_if<pred<T> >::type foo(T &)
+//  { } // error: no return statement in constexpr function
+//
+// This issue also affects C++11 mode, but C++11 constexpr requires return stmt.
+// Therefore we don't care such case.
+//
+// Note that we can't check Clang version directly as the numbering system changes depending who's
+// creating the Clang release (see https://github.com/boostorg/config/pull/39#issuecomment-59927873)
+// so instead verify that we have a feature that was introduced at the same time as working C++14
+// constexpr (generic lambda's in this case):
+//
+#if !__has_feature(__cxx_generic_lambdas__) || !__has_feature(__cxx_relaxed_constexpr__)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+
+#if !__has_feature(__cxx_return_type_deduction__)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+
+#if !__has_feature(__cxx_variable_templates__)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+// Clang 3.9+ in c++1z
+#if !__has_cpp_attribute(fallthrough) || __cplusplus < 201406L
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+
+#if __cplusplus < 201103L
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#endif
+
+#if __cplusplus < 201400
+// All versions with __cplusplus above this value seem to support this:
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+
+// Unreachable code markup
+#if defined(__has_builtin)
+#if __has_builtin(__builtin_unreachable)
+#define BOOST_UNREACHABLE_RETURN(x) __builtin_unreachable();
+#endif
+#endif
+
+// Deprecated symbol markup
+#if __has_attribute(deprecated)
+#define BOOST_DEPRECATED(msg) __attribute__((deprecated(msg)))
+#endif
+
+#if (__clang_major__ == 3) && (__clang_minor__ == 0)
+// Apparently a clang bug:
+#  define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#endif
+
+// Clang has supported the 'unused' attribute since the first release.
+#define BOOST_ATTRIBUTE_UNUSED __attribute__((__unused__))
+
+// Type aliasing hint.
+#if __has_attribute(__may_alias__)
+#  define BOOST_MAY_ALIAS __attribute__((__may_alias__))
+#endif
+
+#ifndef BOOST_COMPILER
+#  define BOOST_COMPILER "Clang version " __clang_version__
+#endif
+
+// Macro used to identify the Clang compiler.
+#define BOOST_CLANG 1
+
+// BOOST_CLANG_VERSION
+#include <boost/config/compiler/clang_version.hpp>

src/boost/config/compiler/clang_version.hpp

@@ -0,0 +1,89 @@
+// Copyright 2021 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt)
+
+#if !defined(__apple_build_version__)
+
+# define BOOST_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__ % 100)
+
+#else
+# define BOOST_CLANG_REPORTED_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__ % 100)
+
+// https://en.wikipedia.org/wiki/Xcode#Toolchain_versions
+
+# if BOOST_CLANG_REPORTED_VERSION >= 150000
+#   define BOOST_CLANG_VERSION 160000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 140003
+#   define BOOST_CLANG_VERSION 150000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 140000
+#   define BOOST_CLANG_VERSION 140000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 130100
+#   define BOOST_CLANG_VERSION 130000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 130000
+#   define BOOST_CLANG_VERSION 120000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 120005
+#   define BOOST_CLANG_VERSION 110100
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 120000
+#   define BOOST_CLANG_VERSION 100000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 110003
+#   define BOOST_CLANG_VERSION 90000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 110000
+#   define BOOST_CLANG_VERSION 80000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 100001
+#   define BOOST_CLANG_VERSION 70000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 100000
+#   define BOOST_CLANG_VERSION 60001
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 90100
+#   define BOOST_CLANG_VERSION 50002
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 90000
+#   define BOOST_CLANG_VERSION 40000
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 80000
+#   define BOOST_CLANG_VERSION 30900
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 70300
+#   define BOOST_CLANG_VERSION 30800
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 70000
+#   define BOOST_CLANG_VERSION 30700
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 60100
+#   define BOOST_CLANG_VERSION 30600
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 60000
+#   define BOOST_CLANG_VERSION 30500
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 50100
+#   define BOOST_CLANG_VERSION 30400
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 50000
+#   define BOOST_CLANG_VERSION 30300
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 40200
+#   define BOOST_CLANG_VERSION 30200
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 30100
+#   define BOOST_CLANG_VERSION 30100
+
+# elif BOOST_CLANG_REPORTED_VERSION >= 20100
+#   define BOOST_CLANG_VERSION 30000
+
+# else
+#   define BOOST_CLANG_VERSION 20900
+
+# endif
+
+# undef BOOST_CLANG_REPORTED_VERSION
+#endif

src/boost/config/compiler/codegear.hpp

@@ -0,0 +1,385 @@
+//  (C) Copyright John Maddock 2001 - 2003.
+//  (C) Copyright David Abrahams 2002 - 2003.
+//  (C) Copyright Aleksey Gurtovoy 2002.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  CodeGear C++ compiler setup:
+
+//
+// versions check:
+// last known and checked version is 0x740
+#if (__CODEGEARC__ > 0x740)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  else
+#     pragma message( "boost: Unknown compiler version - please run the configure tests and report the results")
+#  endif
+#endif
+
+#ifdef __clang__ // Clang enhanced Windows compiler
+
+#  include "clang.hpp"
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#  define BOOST_NO_CXX11_ATOMIC_SMART_PTR
+
+// This bug has been reported to Embarcadero
+
+#if defined(BOOST_HAS_INT128)
+#undef BOOST_HAS_INT128
+#endif
+#if defined(BOOST_HAS_FLOAT128)
+#undef BOOST_HAS_FLOAT128
+#endif
+
+// The clang-based compilers can not do 128 atomic exchanges
+
+#define BOOST_ATOMIC_NO_CMPXCHG16B
+
+// 32 functions are missing from the current RTL in cwchar, so it really can not be used even if it exists
+
+#  define BOOST_NO_CWCHAR
+
+#  ifndef __MT__  /* If compiling in single-threaded mode, assume there is no CXX11_HDR_ATOMIC */
+#    define BOOST_NO_CXX11_HDR_ATOMIC
+#  endif
+
+/* temporarily disable this until we can link against fegetround fesetround feholdexcept */
+
+#define BOOST_NO_FENV_H
+
+/* Reported this bug to Embarcadero with the latest C++ Builder Rio release */
+
+#define BOOST_NO_CXX11_HDR_EXCEPTION
+
+//
+// check for exception handling support:
+//
+#if !defined(_CPPUNWIND) && !defined(__EXCEPTIONS) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+
+/*
+
+// On non-Win32 platforms let the platform config figure this out:
+#ifdef _WIN32
+#  define BOOST_HAS_STDINT_H
+#endif
+
+//
+// __int64:
+//
+#if !defined(__STRICT_ANSI__)
+#  define BOOST_HAS_MS_INT64
+#endif
+//
+// all versions have a <dirent.h>:
+//
+#if !defined(__STRICT_ANSI__)
+#  define BOOST_HAS_DIRENT_H
+#endif
+//
+// Disable Win32 support in ANSI mode:
+//
+#  pragma defineonoption BOOST_DISABLE_WIN32 -A
+//
+// MSVC compatibility mode does some nasty things:
+// TODO: look up if this doesn't apply to the whole 12xx range
+//
+#if defined(_MSC_VER) && (_MSC_VER <= 1200)
+#  define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
+#  define BOOST_NO_VOID_RETURNS
+#endif
+//
+
+*/
+
+// Specific settings for Embarcadero drivers
+#  define BOOST_EMBTC          __CODEGEARC__
+#  define BOOST_EMBTC_FULL_VER ((__clang_major__      << 16) | \
+                                (__clang_minor__      <<  8) | \
+                                 __clang_patchlevel__         )
+
+// Detecting which Embarcadero driver is being used
+#if defined(BOOST_EMBTC)
+#  if defined(_WIN64)
+#    define BOOST_EMBTC_WIN64 1
+#    define BOOST_EMBTC_WINDOWS 1
+#    ifndef BOOST_USE_WINDOWS_H
+#      define BOOST_USE_WINDOWS_H
+#    endif
+#  elif defined(_WIN32)
+#    define BOOST_EMBTC_WIN32C 1
+#    define BOOST_EMBTC_WINDOWS 1
+#    ifndef BOOST_USE_WINDOWS_H
+#      define BOOST_USE_WINDOWS_H
+#    endif
+#  elif defined(__APPLE__) && defined(__arm__)
+#    define BOOST_EMBTC_IOSARM 1
+#    define BOOST_EMBTC_IOS 1
+#  elif defined(__APPLE__) && defined(__aarch64__)
+#    define BOOST_EMBTC_IOSARM64 1
+#    define BOOST_EMBTC_IOS 1
+#  elif defined(__ANDROID__) && defined(__arm__)
+#    define BOOST_EMBTC_AARM 1
+#    define BOOST_EMBTC_ANDROID 1
+#  elif
+#    if defined(BOOST_ASSERT_CONFIG)
+#       error "Unknown Embarcadero driver"
+#    else
+#       warning "Unknown Embarcadero driver"
+#    endif /* defined(BOOST_ASSERT_CONFIG) */
+#  endif
+#endif /* defined(BOOST_EMBTC) */
+
+#if defined(BOOST_EMBTC_WINDOWS)
+
+#if !defined(_chdir)
+#define _chdir(x) chdir(x)
+#endif
+
+#if !defined(_dup2)
+#define _dup2(x,y) dup2(x,y)
+#endif
+
+#endif
+
+#  undef BOOST_COMPILER
+#  define BOOST_COMPILER "Embarcadero-Clang C++ version " BOOST_STRINGIZE(__CODEGEARC__) " clang: " __clang_version__
+// #  define __CODEGEARC_CLANG__ __CODEGEARC__
+// #  define __EMBARCADERO_CLANG__ __CODEGEARC__
+// #  define __BORLANDC_CLANG__ __BORLANDC__
+
+#else // #if !defined(__clang__)
+
+# define BOOST_CODEGEARC  __CODEGEARC__
+# define BOOST_BORLANDC   __BORLANDC__
+
+#if !defined( BOOST_WITH_CODEGEAR_WARNINGS )
+// these warnings occur frequently in optimized template code
+# pragma warn -8004 // var assigned value, but never used
+# pragma warn -8008 // condition always true/false
+# pragma warn -8066 // dead code can never execute
+# pragma warn -8104 // static members with ctors not threadsafe
+# pragma warn -8105 // reference member in class without ctors
+#endif
+
+// CodeGear C++ Builder 2009
+#if (__CODEGEARC__ <= 0x613)
+#  define BOOST_NO_INTEGRAL_INT64_T
+#  define BOOST_NO_DEPENDENT_NESTED_DERIVATIONS
+#  define BOOST_NO_PRIVATE_IN_AGGREGATE
+#  define BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE
+   // we shouldn't really need this - but too many things choke
+   // without it, this needs more investigation:
+#  define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+#  define BOOST_SP_NO_SP_CONVERTIBLE
+#endif
+
+// CodeGear C++ Builder 2010
+#if (__CODEGEARC__ <= 0x621)
+#  define BOOST_NO_TYPENAME_WITH_CTOR    // Cannot use typename keyword when making temporaries of a dependant type
+#  define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
+#  define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#  define BOOST_NO_NESTED_FRIENDSHIP     // TC1 gives nested classes access rights as any other member
+#  define BOOST_NO_USING_TEMPLATE
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+// Temporary hack, until specific MPL preprocessed headers are generated
+#  define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
+
+// CodeGear has not yet completely implemented value-initialization, for
+// example for array types, as I reported in 2010: Embarcadero Report 83751,
+// "Value-initialization: arrays should have each element value-initialized",
+// http://qc.embarcadero.com/wc/qcmain.aspx?d=83751
+// Last checked version: Embarcadero C++ 6.21
+// See also: http://www.boost.org/libs/utility/value_init.htm#compiler_issues
+// (Niels Dekker, LKEB, April 2010)
+#  define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+
+#  if defined(NDEBUG) && defined(__cplusplus)
+      // fix broken <cstring> so that Boost.test works:
+#     include <cstring>
+#     undef strcmp
+#  endif
+   // fix broken errno declaration:
+#  include <errno.h>
+#  ifndef errno
+#     define errno errno
+#  endif
+
+#endif
+
+// Reportedly, #pragma once is supported since C++ Builder 2010
+#if (__CODEGEARC__ >= 0x620)
+#  define BOOST_HAS_PRAGMA_ONCE
+#endif
+
+#define BOOST_NO_FENV_H
+
+//
+// C++0x macros:
+//
+#if (__CODEGEARC__ <= 0x620)
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#else
+#define BOOST_HAS_STATIC_ASSERT
+#endif
+#define BOOST_HAS_CHAR16_T
+#define BOOST_HAS_CHAR32_T
+#define BOOST_HAS_LONG_LONG
+// #define BOOST_HAS_ALIGNOF
+#define BOOST_HAS_DECLTYPE
+#define BOOST_HAS_EXPLICIT_CONVERSION_OPS
+// #define BOOST_HAS_RVALUE_REFS
+#define BOOST_HAS_SCOPED_ENUM
+// #define BOOST_HAS_STATIC_ASSERT
+#define BOOST_HAS_STD_TYPE_TRAITS
+
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+//
+// TR1 macros:
+//
+#define BOOST_HAS_TR1_HASH
+#define BOOST_HAS_TR1_TYPE_TRAITS
+#define BOOST_HAS_TR1_UNORDERED_MAP
+#define BOOST_HAS_TR1_UNORDERED_SET
+
+#define BOOST_HAS_MACRO_USE_FACET
+
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+
+// On non-Win32 platforms let the platform config figure this out:
+#ifdef _WIN32
+#  define BOOST_HAS_STDINT_H
+#endif
+
+//
+// __int64:
+//
+#if !defined(__STRICT_ANSI__)
+#  define BOOST_HAS_MS_INT64
+#endif
+//
+// check for exception handling support:
+//
+#if !defined(_CPPUNWIND) && !defined(BOOST_CPPUNWIND) && !defined(__EXCEPTIONS) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+//
+// all versions have a <dirent.h>:
+//
+#if !defined(__STRICT_ANSI__)
+#  define BOOST_HAS_DIRENT_H
+#endif
+//
+// all versions support __declspec:
+//
+#if defined(__STRICT_ANSI__)
+// config/platform/win32.hpp will define BOOST_SYMBOL_EXPORT, etc., unless already defined
+#  define BOOST_SYMBOL_EXPORT
+#endif
+//
+// ABI fixing headers:
+//
+#ifndef BOOST_ABI_PREFIX
+#  define BOOST_ABI_PREFIX "boost/config/abi/borland_prefix.hpp"
+#endif
+#ifndef BOOST_ABI_SUFFIX
+#  define BOOST_ABI_SUFFIX "boost/config/abi/borland_suffix.hpp"
+#endif
+//
+// Disable Win32 support in ANSI mode:
+//
+#  pragma defineonoption BOOST_DISABLE_WIN32 -A
+//
+// MSVC compatibility mode does some nasty things:
+// TODO: look up if this doesn't apply to the whole 12xx range
+//
+#if defined(_MSC_VER) && (_MSC_VER <= 1200)
+#  define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
+#  define BOOST_NO_VOID_RETURNS
+#endif
+
+#define BOOST_COMPILER "CodeGear C++ version " BOOST_STRINGIZE(__CODEGEARC__)
+
+#endif // #if !defined(__clang__)

src/boost/config/compiler/comeau.hpp

@@ -0,0 +1,59 @@
+//  (C) Copyright John Maddock 2001. 
+//  (C) Copyright Douglas Gregor 2001. 
+//  (C) Copyright Peter Dimov 2001. 
+//  (C) Copyright Aleksey Gurtovoy 2003. 
+//  (C) Copyright Beman Dawes 2003. 
+//  (C) Copyright Jens Maurer 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Comeau C++ compiler setup:
+
+#include <boost/config/compiler/common_edg.hpp>
+
+#if (__COMO_VERSION__ <= 4245)
+
+#  if defined(_MSC_VER) && _MSC_VER <= 1300
+#     if _MSC_VER > 100
+         // only set this in non-strict mode:
+#        define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
+#     endif
+#  endif
+
+// Void returns don't work when emulating VC 6 (Peter Dimov)
+// TODO: look up if this doesn't apply to the whole 12xx range
+#  if defined(_MSC_VER) && (_MSC_VER < 1300)
+#     define BOOST_NO_VOID_RETURNS
+#  endif
+
+#endif  // version 4245
+
+//
+// enable __int64 support in VC emulation mode
+//
+#  if defined(_MSC_VER) && (_MSC_VER >= 1200)
+#     define BOOST_HAS_MS_INT64
+#  endif
+
+#define BOOST_COMPILER "Comeau compiler version " BOOST_STRINGIZE(__COMO_VERSION__)
+
+//
+// versions check:
+// we don't know Comeau prior to version 4245:
+#if __COMO_VERSION__ < 4245
+#  error "Compiler not configured - please reconfigure"
+#endif
+//
+// last known and checked version is 4245:
+#if (__COMO_VERSION__ > 4245)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+
+
+

src/boost/config/compiler/common_edg.hpp

@@ -0,0 +1,183 @@
+//  (C) Copyright John Maddock 2001 - 2002.
+//  (C) Copyright Jens Maurer 2001.
+//  (C) Copyright David Abrahams 2002.
+//  (C) Copyright Aleksey Gurtovoy 2002.
+//  (C) Copyright Markus Schoepflin 2005.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//
+// Options common to all edg based compilers.
+//
+// This is included from within the individual compiler mini-configs.
+
+#ifndef  __EDG_VERSION__
+#  error This file requires that __EDG_VERSION__ be defined.
+#endif
+
+#if (__EDG_VERSION__ <= 238)
+#   define BOOST_NO_INTEGRAL_INT64_T
+#   define BOOST_NO_SFINAE
+#endif
+
+#if (__EDG_VERSION__ <= 240)
+#   define BOOST_NO_VOID_RETURNS
+#endif
+
+#if (__EDG_VERSION__ <= 241) && !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
+#   define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP
+#endif
+
+#if (__EDG_VERSION__ <= 244) && !defined(BOOST_NO_TEMPLATE_TEMPLATES)
+#   define BOOST_NO_TEMPLATE_TEMPLATES
+#endif
+
+#if (__EDG_VERSION__ < 300) && !defined(BOOST_NO_IS_ABSTRACT)
+#   define BOOST_NO_IS_ABSTRACT
+#endif
+
+#if (__EDG_VERSION__ <= 303) && !defined(BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL)
+#   define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
+#endif
+
+// See also kai.hpp which checks a Kai-specific symbol for EH
+# if !defined(__KCC) && !defined(__EXCEPTIONS) && !defined(BOOST_NO_EXCEPTIONS)
+#     define BOOST_NO_EXCEPTIONS
+# endif
+
+# if !defined(__NO_LONG_LONG)
+#     define BOOST_HAS_LONG_LONG
+# else
+#     define BOOST_NO_LONG_LONG
+# endif
+
+// Not sure what version was the first to support #pragma once, but
+// different EDG-based compilers (e.g. Intel) supported it for ages.
+// Add a proper version check if it causes problems.
+#define BOOST_HAS_PRAGMA_ONCE
+
+//
+// C++0x features
+//
+//   See above for BOOST_NO_LONG_LONG
+//
+#if (__EDG_VERSION__ < 310)
+#  define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#endif
+#if (__EDG_VERSION__ <= 310)
+// No support for initializer lists
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#endif
+#if (__EDG_VERSION__ < 400)
+#  define BOOST_NO_CXX11_VARIADIC_MACROS
+#endif
+
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+//__cpp_decltype 200707 possibly?
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+
+#if !defined(__cpp_unicode_characters) || (__cpp_unicode_characters < 200704)
+#   define BOOST_NO_CXX11_CHAR16_T
+#   define BOOST_NO_CXX11_CHAR32_T
+#endif
+#if !defined(__cpp_unicode_literals) || (__cpp_unicode_literals < 200710)
+#   define BOOST_NO_CXX11_UNICODE_LITERALS
+#endif
+#if !defined(__cpp_user_defined_literals) || (__cpp_user_defined_literals < 200809)
+#   define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#endif
+#if !defined(__cpp_variadic_templates) || (__cpp_variadic_templates < 200704)
+#   define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 200907)
+#   define BOOST_NO_CXX11_CONSTEXPR
+#endif
+#if !defined(__cpp_lambdas) || (__cpp_lambdas < 200907)
+#   define BOOST_NO_CXX11_LAMBDAS
+#endif
+#if !defined(__cpp_range_based_for) || (__cpp_range_based_for < 200710)
+#   define BOOST_NO_CXX11_RANGE_BASED_FOR
+#endif
+#if !defined(__cpp_raw_strings) || (__cpp_raw_strings < 200610)
+#   define BOOST_NO_CXX11_RAW_LITERALS
+#endif
+
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+#ifdef c_plusplus
+// EDG has "long long" in non-strict mode
+// However, some libraries have insufficient "long long" support
+// #define BOOST_HAS_LONG_LONG
+#endif

src/boost/config/compiler/compaq_cxx.hpp

@@ -0,0 +1,19 @@
+//  (C) Copyright John Maddock 2001 - 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Tru64 C++ compiler setup (now HP):
+
+#define BOOST_COMPILER "HP Tru64 C++ " BOOST_STRINGIZE(__DECCXX_VER)
+
+#include <boost/config/compiler/common_edg.hpp>
+
+//
+// versions check:
+// Nothing to do here?
+
+
+

src/boost/config/compiler/cray.hpp

@@ -0,0 +1,446 @@
+//  Copyright 2011 John Maddock
+//  Copyright 2013, 2017-2018 Cray, Inc.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+// Cray C++ compiler setup.
+//
+// There are a few parameters that affect the macros defined in this file:
+//
+// - What version of CCE (Cray Compiling Environment) are we running? This
+//   comes from the '_RELEASE_MAJOR', '_RELEASE_MINOR', and
+//   '_RELEASE_PATCHLEVEL' macros.
+// - What C++ standards conformance level are we using (e.g. '-h
+//   std=c++14')? This comes from the '__cplusplus' macro.
+// - Are we using GCC extensions ('-h gnu' or '-h nognu')? If we have '-h
+//   gnu' then CCE emulates GCC, and the macros '__GNUC__',
+//   '__GNUC_MINOR__', and '__GNUC_PATCHLEVEL__' are defined.
+//
+// This file is organized as follows:
+//
+// - Verify that the combination of parameters listed above is supported.
+//   If we have an unsupported combination, we abort with '#error'.
+// - Establish baseline values for all Boost macros.
+// - Apply changes to the baseline macros based on compiler version. These
+//   changes are cummulative so each version section only describes the
+//   changes since the previous version.
+//   - Within each version section, we may also apply changes based on
+//     other parameters (i.e. C++ standards conformance level and GCC
+//     extensions).
+//
+// To test changes to this file:
+//
+// ```
+// module load cce/8.6.5 # Pick the version you want to test.
+// cd boost/libs/config/test/all
+// b2 -j 8 toolset=cray cxxstd=03 cxxstd=11 cxxstd=14 cxxstd-dialect=gnu linkflags=-lrt
+// ```
+// Note: Using 'cxxstd-dialect=iso' is not supported at this time (the
+// tests run, but many tests fail).
+//
+// Note: 'linkflags=-lrt' is needed in Cray Linux Environment. Otherwise
+// you get an 'undefined reference to clock_gettime' error.
+//
+// Note: If a test '*_fail.cpp' file compiles, but fails to run, then it is
+// reported as a defect. However, this is not actually a defect. This is an
+// area where the test system is somewhat broken. Tests that are failing
+// because of this problem are noted in the comments.
+//
+// Pay attention to the macro definitions for the macros you wish to
+// modify. For example, only macros categorized as compiler macros should
+// appear in this file; platform macros should not appear in this file.
+// Also, some macros have to be defined to specific values; it is not
+// always enough to define or undefine a macro.
+//
+// Macro definitions are available in the source code at:
+//
+// `boost/libs/config/doc/html/boost_config/boost_macro_reference.html`
+//
+// Macro definitions are also available online at:
+//
+// http://www.boost.org/doc/libs/master/libs/config/doc/html/boost_config/boost_macro_reference.html
+//
+// Typically, if you enable a feature, and the tests pass, then you have
+// nothing to worry about. However, it's sometimes hard to figure out if a
+// disabled feature needs to stay disabled. To get a list of disabled
+// features, run 'b2' in 'boost/libs/config/checks'. These are the macros
+// you should pay attention to (in addition to macros that cause test
+// failures).
+
+////
+//// Front matter
+////
+
+// In a developer build of the Cray compiler (i.e. a compiler built by a
+// Cray employee), the release patch level is reported as "x". This gives
+// versions that look like e.g. "8.6.x".
+//
+// To accomplish this, the the Cray compiler preprocessor inserts:
+//
+// #define _RELEASE_PATCHLEVEL x
+//
+// If we are using a developer build of the compiler, we want to use the
+// configuration macros for the most recent patch level of the release. To
+// accomplish this, we'll pretend that _RELEASE_PATCHLEVEL is 99.
+//
+// However, it's difficult to detect if _RELEASE_PATCHLEVEL is x. We must
+// consider that the x will be expanded if x is defined as a macro
+// elsewhere. For example, imagine if someone put "-D x=3" on the command
+// line, and _RELEASE_PATCHLEVEL is x. Then _RELEASE_PATCHLEVEL would
+// expand to 3, and we could not distinguish it from an actual
+// _RELEASE_PATCHLEVEL of 3. This problem only affects developer builds; in
+// production builds, _RELEASE_PATCHLEVEL is always an integer.
+//
+// IMPORTANT: In developer builds, if x is defined as a macro, you will get
+// an incorrect configuration. The behavior in this case is undefined.
+//
+// Even if x is not defined, we have to use some trickery to detect if
+// _RELEASE_PATCHLEVEL is x. First we define BOOST_CRAY_x to some arbitrary
+// magic value, 9867657. Then we use BOOST_CRAY_APPEND to append the
+// expanded value of _RELEASE_PATCHLEVEL to the string "BOOST_CRAY_".
+//
+// - If _RELEASE_PATCHLEVEL is undefined, we get "BOOST_CRAY_".
+// - If _RELEASE_PATCHLEVEL is 5, we get "BOOST_CRAY_5".
+// - If _RELEASE_PATCHLEVEL is x (and x is not defined) we get
+//   "BOOST_CRAY_x":
+//
+// Then we check if BOOST_CRAY_x is equal to the output of
+// BOOST_CRAY_APPEND. In other words, the output of BOOST_CRAY_APPEND is
+// treated as a macro name, and expanded again. If we can safely assume
+// that BOOST_CRAY_ is not a macro defined as our magic number, and
+// BOOST_CRAY_5 is not a macro defined as our magic number, then the only
+// way the equality test can pass is if _RELEASE_PATCHLEVEL expands to x.
+//
+// So, that is how we detect if we are using a developer build of the Cray
+// compiler.
+
+#define BOOST_CRAY_x 9867657 // Arbitrary number
+#define BOOST_CRAY_APPEND(MACRO) BOOST_CRAY_APPEND_INTERNAL(MACRO)
+#define BOOST_CRAY_APPEND_INTERNAL(MACRO) BOOST_CRAY_##MACRO
+
+#if BOOST_CRAY_x == BOOST_CRAY_APPEND(_RELEASE_PATCHLEVEL)
+
+    // This is a developer build.
+    //
+    // - _RELEASE_PATCHLEVEL is defined as x, and x is not defined as a macro.
+
+    // Pretend _RELEASE_PATCHLEVEL is 99, so we get the configuration for the
+    // most recent patch level in this release.
+
+    #define BOOST_CRAY_VERSION (_RELEASE_MAJOR * 10000 + _RELEASE_MINOR * 100 + 99)
+
+#else
+
+    // This is a production build.
+    //
+    // _RELEASE_PATCHLEVEL is not defined as x, or x is defined as a macro.
+
+    #define BOOST_CRAY_VERSION (_RELEASE_MAJOR * 10000 + _RELEASE_MINOR * 100 + _RELEASE_PATCHLEVEL)
+
+#endif // BOOST_CRAY_x == BOOST_CRAY_APPEND(_RELEASE_PATCHLEVEL)
+
+#undef BOOST_CRAY_APPEND_INTERNAL
+#undef BOOST_CRAY_APPEND
+#undef BOOST_CRAY_x
+
+
+#ifdef __GNUC__
+#   define BOOST_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#endif
+
+#ifndef BOOST_COMPILER
+#   define BOOST_COMPILER "Cray C++ version " BOOST_STRINGIZE(_RELEASE_MAJOR) "." BOOST_STRINGIZE(_RELEASE_MINOR) "." BOOST_STRINGIZE(_RELEASE_PATCHLEVEL)
+#endif
+
+// Since the Cray compiler defines '__GNUC__', we have to emulate some
+// additional GCC macros in order to make everything work.
+//
+// FIXME: Perhaps Cray should fix the compiler to define these additional
+// macros for GCC emulation?
+
+#if __cplusplus >= 201103L && defined(__GNUC__) && !defined(__GXX_EXPERIMENTAL_CXX0X__)
+#   define __GXX_EXPERIMENTAL_CXX0X__ 1
+#endif
+
+////
+//// Parameter validation
+////
+
+// FIXME: Do we really need to support compilers before 8.5? Do they pass
+// the Boost.Config tests?
+
+#if BOOST_CRAY_VERSION < 80000
+#  error "Boost is not configured for Cray compilers prior to version 8, please try the configure script."
+#endif
+
+// We only support recent EDG based compilers.
+
+#ifndef __EDG__
+#  error "Unsupported Cray compiler, please try running the configure script."
+#endif
+
+////
+//// Baseline values
+////
+
+#include <boost/config/compiler/common_edg.hpp>
+
+#define BOOST_HAS_NRVO
+#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CHAR16_T
+#define BOOST_NO_CXX11_CHAR32_T
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_VARIADIC_MACROS
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+
+//#define BOOST_BCB_PARTIAL_SPECIALIZATION_BUG
+#define BOOST_MATH_DISABLE_STD_FPCLASSIFY
+//#define BOOST_HAS_FPCLASSIFY
+
+#define BOOST_SP_USE_PTHREADS 
+#define BOOST_AC_USE_PTHREADS 
+
+//
+// Everything that follows is working around what are thought to be
+// compiler shortcomings. Revist all of these regularly.
+//
+
+//#define BOOST_USE_ENUM_STATIC_ASSERT
+//#define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS //(this may be implied by the previous #define
+
+// These constants should be provided by the compiler.
+
+#ifndef __ATOMIC_RELAXED
+#define __ATOMIC_RELAXED 0
+#define __ATOMIC_CONSUME 1
+#define __ATOMIC_ACQUIRE 2
+#define __ATOMIC_RELEASE 3
+#define __ATOMIC_ACQ_REL 4
+#define __ATOMIC_SEQ_CST 5
+#endif
+
+////
+//// Version changes
+////
+
+//
+// 8.5.0
+//
+
+#if BOOST_CRAY_VERSION >= 80500
+
+#if __cplusplus >= 201103L
+
+#undef BOOST_HAS_NRVO
+#undef BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#undef BOOST_NO_CXX11_AUTO_DECLARATIONS
+#undef BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#undef BOOST_NO_CXX11_CHAR16_T
+#undef BOOST_NO_CXX11_CHAR32_T
+#undef BOOST_NO_CXX11_CONSTEXPR
+#undef BOOST_NO_CXX11_DECLTYPE
+#undef BOOST_NO_CXX11_DECLTYPE_N3276
+#undef BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#undef BOOST_NO_CXX11_DELETED_FUNCTIONS
+#undef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#undef BOOST_NO_CXX11_FINAL
+#undef BOOST_NO_CXX11_OVERRIDE
+#undef BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#undef BOOST_NO_CXX11_LAMBDAS
+#undef BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#undef BOOST_NO_CXX11_NOEXCEPT
+#undef BOOST_NO_CXX11_NULLPTR
+#undef BOOST_NO_CXX11_RANGE_BASED_FOR
+#undef BOOST_NO_CXX11_RAW_LITERALS
+#undef BOOST_NO_CXX11_REF_QUALIFIERS
+#undef BOOST_NO_CXX11_RVALUE_REFERENCES
+#undef BOOST_NO_CXX11_SCOPED_ENUMS
+#undef BOOST_NO_CXX11_SFINAE_EXPR
+#undef BOOST_NO_CXX11_STATIC_ASSERT
+#undef BOOST_NO_CXX11_TEMPLATE_ALIASES
+#undef BOOST_NO_CXX11_THREAD_LOCAL
+#undef BOOST_NO_CXX11_UNICODE_LITERALS
+#undef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#undef BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#undef BOOST_NO_CXX11_VARIADIC_MACROS
+#undef BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#undef BOOST_NO_CXX11_UNRESTRICTED_UNION
+#undef BOOST_NO_SFINAE_EXPR
+#undef BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#undef BOOST_MATH_DISABLE_STD_FPCLASSIFY
+#undef BOOST_SP_USE_PTHREADS 
+#undef BOOST_AC_USE_PTHREADS 
+
+#define BOOST_HAS_VARIADIC_TMPL
+#define BOOST_HAS_UNISTD_H
+#define BOOST_HAS_TR1_COMPLEX_INVERSE_TRIG
+#define BOOST_HAS_TR1_COMPLEX_OVERLOADS
+#define BOOST_HAS_STDINT_H
+#define BOOST_HAS_STATIC_ASSERT
+#define BOOST_HAS_SIGACTION
+#define BOOST_HAS_SCHED_YIELD
+#define BOOST_HAS_RVALUE_REFS
+#define BOOST_HAS_PTHREADS
+#define BOOST_HAS_PTHREAD_YIELD
+#define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
+#define BOOST_HAS_PARTIAL_STD_ALLOCATOR
+#define BOOST_HAS_NRVO
+#define BOOST_HAS_NL_TYPES_H
+#define BOOST_HAS_NANOSLEEP
+#define BOOST_NO_CXX11_SMART_PTR
+#define BOOST_NO_CXX11_HDR_FUNCTIONAL
+#define BOOST_NO_CXX14_CONSTEXPR
+#define BOOST_HAS_LONG_LONG
+#define BOOST_HAS_FLOAT128
+
+#if __cplusplus < 201402L
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#endif // __cplusplus < 201402L
+
+#endif // __cplusplus >= 201103L
+
+#endif // BOOST_CRAY_VERSION >= 80500
+
+//
+// 8.6.4
+// (versions prior to 8.6.5 do not define _RELEASE_PATCHLEVEL)
+//
+
+#if BOOST_CRAY_VERSION >= 80600
+
+#if __cplusplus >= 199711L
+#define BOOST_HAS_FLOAT128
+#define BOOST_HAS_PTHREAD_YIELD // This is a platform macro, but it improves test results.
+#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION // This is correct. Test compiles, but fails to run.
+#undef  BOOST_NO_CXX11_CHAR16_T
+#undef  BOOST_NO_CXX11_CHAR32_T
+#undef  BOOST_NO_CXX11_INLINE_NAMESPACES
+#undef  BOOST_NO_CXX11_FINAL
+#undef BOOST_NO_CXX11_OVERRIDE
+#undef  BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#undef  BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_SFINAE_EXPR // This is correct, even though '*_fail.cpp' test fails.
+#undef  BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#undef  BOOST_NO_CXX11_VARIADIC_MACROS
+#undef  BOOST_NO_CXX11_VARIADIC_TEMPLATES
+// 'BOOST_NO_DEDUCED_TYPENAME' test is broken. The test files are enabled /
+// disabled with an '#ifdef BOOST_DEDUCED_TYPENAME'. However,
+// 'boost/libs/config/include/boost/config/detail/suffix.hpp' ensures that
+// 'BOOST_DEDUCED_TYPENAME' is always defined (the value it is defined as
+// depends on 'BOOST_NO_DEDUCED_TYPENAME'). So, modifying
+// 'BOOST_NO_DEDUCED_TYPENAME' has no effect on which tests are run.
+//
+// The 'no_ded_typename_pass.cpp' test should always compile and run
+// successfully, because 'BOOST_DEDUCED_TYPENAME' must always have an
+// appropriate value (it's not just something that you turn on or off).
+// Therefore, if you wish to test changes to 'BOOST_NO_DEDUCED_TYPENAME',
+// you have to modify 'no_ded_typename_pass.cpp' to unconditionally include
+// 'boost_no_ded_typename.ipp'.
+#undef  BOOST_NO_DEDUCED_TYPENAME // This is correct. Test is broken.
+#undef  BOOST_NO_SFINAE_EXPR
+#undef  BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif // __cplusplus >= 199711L
+
+#if __cplusplus >= 201103L
+#undef  BOOST_NO_CXX11_ALIGNAS
+#undef  BOOST_NO_CXX11_ALIGNOF
+#undef  BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_HDR_ATOMIC
+#undef  BOOST_NO_CXX11_HDR_FUNCTIONAL
+#define BOOST_NO_CXX11_HDR_REGEX // This is correct. Test compiles, but fails to run.
+#undef  BOOST_NO_CXX11_SFINAE_EXPR
+#undef  BOOST_NO_CXX11_SMART_PTR
+#undef  BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#endif // __cplusplus >= 201103L
+
+#if __cplusplus >= 201402L
+#undef  BOOST_NO_CXX14_CONSTEXPR
+#define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif // __cplusplus == 201402L
+
+#endif // BOOST_CRAY_VERSION >= 80600
+
+//
+// 8.6.5
+// (no change from 8.6.4)
+//
+
+//
+// 8.7.0
+//
+
+#if BOOST_CRAY_VERSION >= 80700
+
+#if __cplusplus >= 199711L
+#endif // __cplusplus >= 199711L
+
+#if __cplusplus >= 201103L
+#undef  BOOST_NO_CXX11_HDR_ATOMIC
+#undef  BOOST_NO_CXX11_HDR_REGEX
+#endif // __cplusplus >= 201103L
+
+#if __cplusplus >= 201402L
+#endif // __cplusplus == 201402L
+
+#endif // BOOST_CRAY_VERSION >= 80700
+
+//
+// Next release
+//
+
+#if BOOST_CRAY_VERSION > 80799
+
+#if __cplusplus >= 199711L
+#endif // __cplusplus >= 199711L
+
+#if __cplusplus >= 201103L
+#endif // __cplusplus >= 201103L
+
+#if __cplusplus >= 201402L
+#endif // __cplusplus == 201402L
+
+#endif // BOOST_CRAY_VERSION > 80799
+
+////
+//// Remove temporary macros
+////
+
+// I've commented out some '#undef' statements to signify that we purposely
+// want to keep certain macros.
+
+//#undef __GXX_EXPERIMENTAL_CXX0X__
+//#undef BOOST_COMPILER
+#undef BOOST_GCC_VERSION
+#undef BOOST_CRAY_VERSION

src/boost/config/compiler/diab.hpp

@@ -0,0 +1,26 @@
+//  (C) Copyright Brian Kuhl 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// Check this is a recent EDG based compiler, otherwise we don't support it here:
+
+
+#ifndef __EDG_VERSION__
+#     error "Unknown Diab compiler version - please run the configure tests and report the results"
+#endif
+
+#include "boost/config/compiler/common_edg.hpp"
+
+#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#define BOOST_BUGGY_INTEGRAL_CONSTANT_EXPRESSIONS
+
+#define BOOST_MPL_CFG_NO_HAS_XXX_TEMPLATE
+#define BOOST_LOG_NO_MEMBER_TEMPLATE_FRIENDS
+#define BOOST_REGEX_NO_EXTERNAL_TEMPLATES
+
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_HDR_CODECVT
+#define BOOST_NO_CXX11_NUMERIC_LIMITS 
+
+#define BOOST_COMPILER "Wind River Diab " BOOST_STRINGIZE(__VERSION_NUMBER__)

src/boost/config/compiler/digitalmars.hpp

@@ -0,0 +1,143 @@
+//  Copyright (C) Christof Meerwald 2003
+//  Copyright (C) Dan Watkins 2003
+//
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  Digital Mars C++ compiler setup:
+#define BOOST_COMPILER __DMC_VERSION_STRING__
+
+#define BOOST_HAS_LONG_LONG
+#define BOOST_HAS_PRAGMA_ONCE
+
+#if !defined(BOOST_STRICT_CONFIG)
+#define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#define BOOST_NO_OPERATORS_IN_NAMESPACE
+#define BOOST_NO_UNREACHABLE_RETURN_DETECTION
+#define BOOST_NO_SFINAE
+#define BOOST_NO_USING_TEMPLATE
+#define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
+#endif
+
+//
+// has macros:
+#define BOOST_HAS_DIRENT_H
+#define BOOST_HAS_STDINT_H
+#define BOOST_HAS_WINTHREADS
+
+#if (__DMC__ >= 0x847)
+#define BOOST_HAS_EXPM1
+#define BOOST_HAS_LOG1P
+#endif
+
+//
+// Is this really the best way to detect whether the std lib is in namespace std?
+//
+#ifdef __cplusplus
+#include <cstddef>
+#endif
+#if !defined(__STL_IMPORT_VENDOR_CSTD) && !defined(_STLP_IMPORT_VENDOR_CSTD)
+#  define BOOST_NO_STDC_NAMESPACE
+#endif
+
+
+// check for exception handling support:
+#if !defined(_CPPUNWIND) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+
+//
+// C++0x features
+//
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CHAR16_T
+#define BOOST_NO_CXX11_CHAR32_T
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+#if (__DMC__ <= 0x840)
+#error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version is ...:
+#if (__DMC__ > 0x848)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif

src/boost/config/compiler/gcc.hpp

@@ -0,0 +1,383 @@
+//  (C) Copyright John Maddock 2001 - 2003.
+//  (C) Copyright Darin Adler 2001 - 2002.
+//  (C) Copyright Jens Maurer 2001 - 2002.
+//  (C) Copyright Beman Dawes 2001 - 2003.
+//  (C) Copyright Douglas Gregor 2002.
+//  (C) Copyright David Abrahams 2002 - 2003.
+//  (C) Copyright Synge Todo 2003.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  GNU C++ compiler setup.
+
+//
+// Define BOOST_GCC so we know this is "real" GCC and not some pretender:
+//
+#define BOOST_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#if !defined(__CUDACC__)
+#define BOOST_GCC BOOST_GCC_VERSION
+#endif
+
+#if defined(__GXX_EXPERIMENTAL_CXX0X__) || (__cplusplus >= 201103L)
+#  define BOOST_GCC_CXX11
+#endif
+
+#if __GNUC__ == 3
+#  if defined (__PATHSCALE__)
+#     define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#     define BOOST_NO_IS_ABSTRACT
+#  endif
+
+#  if __GNUC_MINOR__ < 4
+#     define BOOST_NO_IS_ABSTRACT
+#  endif
+#  define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#endif
+#if __GNUC__ < 4
+//
+// All problems to gcc-3.x and earlier here:
+//
+#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#  ifdef __OPEN64__
+#     define BOOST_NO_IS_ABSTRACT
+#  endif
+#endif
+
+// GCC prior to 3.4 had #pragma once too but it didn't work well with filesystem links
+#if BOOST_GCC_VERSION >= 30400
+#define BOOST_HAS_PRAGMA_ONCE
+#endif
+
+#if BOOST_GCC_VERSION < 40400
+// Previous versions of GCC did not completely implement value-initialization:
+// GCC Bug 30111, "Value-initialization of POD base class doesn't initialize
+// members", reported by Jonathan Wakely in 2006,
+// http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30111 (fixed for GCC 4.4)
+// GCC Bug 33916, "Default constructor fails to initialize array members",
+// reported by Michael Elizabeth Chastain in 2007,
+// http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33916 (fixed for GCC 4.2.4)
+// See also: http://www.boost.org/libs/utility/value_init.htm#compiler_issues
+#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#endif
+
+#if !defined(__EXCEPTIONS) && !defined(BOOST_NO_EXCEPTIONS)
+# define BOOST_NO_EXCEPTIONS
+#endif
+
+
+//
+// Threading support: Turn this on unconditionally here (except for
+// those platforms where we can know for sure). It will get turned off again
+// later if no threading API is detected.
+//
+#if !defined(__MINGW32__) && !defined(linux) && !defined(__linux) && !defined(__linux__)
+# define BOOST_HAS_THREADS
+#endif
+
+//
+// gcc has "long long"
+// Except on Darwin with standard compliance enabled (-pedantic)
+// Apple gcc helpfully defines this macro we can query
+//
+#if !defined(__DARWIN_NO_LONG_LONG)
+# define BOOST_HAS_LONG_LONG
+#endif
+
+//
+// gcc implements the named return value optimization since version 3.1
+//
+#define BOOST_HAS_NRVO
+
+// Branch prediction hints
+#define BOOST_LIKELY(x) __builtin_expect(x, 1)
+#define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
+
+//
+// Dynamic shared object (DSO) and dynamic-link library (DLL) support
+//
+#if __GNUC__ >= 4
+#  if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__CYGWIN__)
+     // All Win32 development environments, including 64-bit Windows and MinGW, define
+     // _WIN32 or one of its variant spellings. Note that Cygwin is a POSIX environment,
+     // so does not define _WIN32 or its variants, but still supports dllexport/dllimport.
+#    define BOOST_HAS_DECLSPEC
+#    define BOOST_SYMBOL_EXPORT __attribute__((__dllexport__))
+#    define BOOST_SYMBOL_IMPORT __attribute__((__dllimport__))
+#  else
+#    define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
+#    define BOOST_SYMBOL_IMPORT
+#  endif
+#  define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
+#else
+// config/platform/win32.hpp will define BOOST_SYMBOL_EXPORT, etc., unless already defined
+#  define BOOST_SYMBOL_EXPORT
+#endif
+
+//
+// RTTI and typeinfo detection is possible post gcc-4.3:
+//
+#if BOOST_GCC_VERSION > 40300
+#  ifndef __GXX_RTTI
+#     ifndef BOOST_NO_TYPEID
+#        define BOOST_NO_TYPEID
+#     endif
+#     ifndef BOOST_NO_RTTI
+#        define BOOST_NO_RTTI
+#     endif
+#  endif
+#endif
+
+//
+// Recent GCC versions have __int128 when in 64-bit mode.
+//
+// We disable this if the compiler is really nvcc with C++03 as it
+// doesn't actually support __int128 as of CUDA_VERSION=7500
+// even though it defines __SIZEOF_INT128__.
+// See https://svn.boost.org/trac/boost/ticket/8048
+//     https://svn.boost.org/trac/boost/ticket/11852
+// Only re-enable this for nvcc if you're absolutely sure
+// of the circumstances under which it's supported:
+//
+#if defined(__CUDACC__)
+#  if defined(BOOST_GCC_CXX11)
+#    define BOOST_NVCC_CXX11
+#  else
+#    define BOOST_NVCC_CXX03
+#  endif
+#endif
+
+#if defined(__SIZEOF_INT128__) && !defined(BOOST_NVCC_CXX03)
+#  define BOOST_HAS_INT128
+#endif
+//
+// Recent GCC versions have a __float128 native type, we need to
+// include a std lib header to detect this - not ideal, but we'll
+// be including <cstddef> later anyway when we select the std lib.
+//
+// Nevertheless, as of CUDA 7.5, using __float128 with the host
+// compiler in pre-C++11 mode is still not supported.
+// See https://svn.boost.org/trac/boost/ticket/11852
+//
+#ifdef __cplusplus
+#include <cstddef>
+#else
+#include <stddef.h>
+#endif
+#if defined(_GLIBCXX_USE_FLOAT128) && !defined(__STRICT_ANSI__) && !defined(BOOST_NVCC_CXX03)
+# define BOOST_HAS_FLOAT128
+#endif
+
+// C++0x features in 4.3.n and later
+//
+#if (BOOST_GCC_VERSION >= 40300) && defined(BOOST_GCC_CXX11)
+// C++0x features are only enabled when -std=c++0x or -std=gnu++0x are
+// passed on the command line, which in turn defines
+// __GXX_EXPERIMENTAL_CXX0X__.
+#  define BOOST_HAS_DECLTYPE
+#  define BOOST_HAS_RVALUE_REFS
+#  define BOOST_HAS_STATIC_ASSERT
+#  define BOOST_HAS_VARIADIC_TMPL
+#else
+#  define BOOST_NO_CXX11_DECLTYPE
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+
+// C++0x features in 4.4.n and later
+//
+#if (BOOST_GCC_VERSION < 40400) || !defined(BOOST_GCC_CXX11)
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+
+#if BOOST_GCC_VERSION < 40500
+#  define BOOST_NO_SFINAE_EXPR
+#endif
+
+// GCC 4.5 forbids declaration of defaulted functions in private or protected sections
+#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 5) || !defined(BOOST_GCC_CXX11)
+#  define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
+#endif
+
+// C++0x features in 4.5.0 and later
+//
+#if (BOOST_GCC_VERSION < 40500) || !defined(BOOST_GCC_CXX11)
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#  define BOOST_NO_CXX11_LAMBDAS
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#  define BOOST_NO_CXX11_RAW_LITERALS
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
+// C++0x features in 4.5.1 and later
+//
+#if (BOOST_GCC_VERSION < 40501) || !defined(BOOST_GCC_CXX11)
+// scoped enums have a serious bug in 4.4.0, so define BOOST_NO_CXX11_SCOPED_ENUMS before 4.5.1
+// See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38064
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+
+// C++0x features in 4.6.n and later
+//
+#if (BOOST_GCC_VERSION < 40600) || !defined(BOOST_GCC_CXX11)
+#define BOOST_NO_CXX11_DEFAULTED_MOVES
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#endif
+
+// C++0x features in 4.7.n and later
+//
+#if (BOOST_GCC_VERSION < 40700) || !defined(BOOST_GCC_CXX11)
+// Note that while constexpr is partly supported in gcc-4.6 it's a 
+// pre-std version with several bugs:
+#  define BOOST_NO_CXX11_CONSTEXPR
+#  define BOOST_NO_CXX11_FINAL
+#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#  define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#  define BOOST_NO_CXX11_OVERRIDE
+#endif
+
+// C++0x features in 4.8.n and later
+//
+#if (BOOST_GCC_VERSION < 40800) || !defined(BOOST_GCC_CXX11)
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#  define BOOST_NO_CXX11_SFINAE_EXPR
+#endif
+
+// C++0x features in 4.8.1 and later
+//
+#if (BOOST_GCC_VERSION < 40801) || !defined(BOOST_GCC_CXX11)
+#  define BOOST_NO_CXX11_DECLTYPE_N3276
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+
+// C++0x features in 4.9.n and later
+//
+#if (BOOST_GCC_VERSION < 40900) || !defined(BOOST_GCC_CXX11)
+// Although alignas support is added in gcc 4.8, it does not accept
+// dependent constant expressions as an argument until gcc 4.9.
+#  define BOOST_NO_CXX11_ALIGNAS
+#endif
+
+// C++0x features in 5.1 and later
+//
+#if (BOOST_GCC_VERSION < 50100) || !defined(BOOST_GCC_CXX11)
+#  define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#endif
+
+// C++14 features in 4.9.0 and later
+//
+#if (BOOST_GCC_VERSION < 40900) || (__cplusplus < 201300)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#  if !((BOOST_GCC_VERSION >= 40801) && (BOOST_GCC_VERSION < 40900) && defined(BOOST_GCC_CXX11))
+#     define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#  endif
+#endif
+
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if (BOOST_GCC_VERSION < 50200) || !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+#if __GNUC__ >= 7
+#  define BOOST_FALLTHROUGH __attribute__((fallthrough))
+#endif
+
+#if (__GNUC__ < 11) && defined(__MINGW32__) && !defined(__MINGW64__)
+// thread_local was broken on mingw for all 32bit compiler releases prior to 11.x, see
+// https://sourceforge.net/p/mingw-w64/bugs/527/
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83562
+// Not setting this causes program termination on thread exit.
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+
+//
+// Unused attribute:
+#if __GNUC__ >= 4
+#  define BOOST_ATTRIBUTE_UNUSED __attribute__((__unused__))
+#endif
+
+// Type aliasing hint. Supported since gcc 3.3.
+#define BOOST_MAY_ALIAS __attribute__((__may_alias__))
+
+// Unreachable code markup
+#if BOOST_GCC_VERSION >= 40500
+#define BOOST_UNREACHABLE_RETURN(x) __builtin_unreachable();
+#endif
+
+// Deprecated symbol markup
+#if BOOST_GCC_VERSION >= 40500
+#define BOOST_DEPRECATED(msg) __attribute__((deprecated(msg)))
+#else
+#define BOOST_DEPRECATED(msg) __attribute__((deprecated))
+#endif
+
+#ifndef BOOST_COMPILER
+#  define BOOST_COMPILER "GNU C++ version " __VERSION__
+#endif
+
+// ConceptGCC compiler:
+//   http://www.generic-programming.org/software/ConceptGCC/
+#ifdef __GXX_CONCEPTS__
+#  define BOOST_HAS_CONCEPTS
+#  define BOOST_COMPILER "ConceptGCC version " __VERSION__
+#endif
+
+// versions check:
+// we don't know gcc prior to version 3.30:
+#if (BOOST_GCC_VERSION < 30300)
+#  error "Compiler not configured - please reconfigure"
+#endif
+//
+// last known and checked version is 8.1:
+#if (BOOST_GCC_VERSION > 80100)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "Boost.Config is older than your compiler - please check for an updated Boost release."
+#  else
+// we don't emit warnings here anymore since there are no defect macros defined for
+// gcc post 3.4, so any failures are gcc regressions...
+//#     warning "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+

src/boost/config/compiler/gcc_xml.hpp

@@ -0,0 +1,114 @@
+//  (C) Copyright John Maddock 2006.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  GCC-XML C++ compiler setup:
+
+#  if !defined(__GCCXML_GNUC__) || ((__GCCXML_GNUC__ <= 3) && (__GCCXML_GNUC_MINOR__ <= 3))
+#     define BOOST_NO_IS_ABSTRACT
+#  endif
+
+//
+// Threading support: Turn this on unconditionally here (except for
+// those platforms where we can know for sure). It will get turned off again
+// later if no threading API is detected.
+//
+#if !defined(__MINGW32__) && !defined(_MSC_VER) && !defined(linux) && !defined(__linux) && !defined(__linux__)
+# define BOOST_HAS_THREADS
+#endif
+
+//
+// gcc has "long long"
+//
+#define BOOST_HAS_LONG_LONG
+
+// C++0x features:
+//
+#  define BOOST_NO_CXX11_CONSTEXPR
+#  define BOOST_NO_CXX11_NULLPTR
+#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#  define BOOST_NO_CXX11_DECLTYPE
+#  define BOOST_NO_CXX11_DECLTYPE_N3276
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#  define BOOST_NO_CXX11_VARIADIC_MACROS
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#  define BOOST_NO_SFINAE_EXPR
+#  define BOOST_NO_CXX11_SFINAE_EXPR
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#  define BOOST_NO_CXX11_LAMBDAS
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#  define BOOST_NO_CXX11_RANGE_BASED_FOR
+#  define BOOST_NO_CXX11_RAW_LITERALS
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#  define BOOST_NO_CXX11_NOEXCEPT
+#  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#  define BOOST_NO_CXX11_FINAL
+#  define BOOST_NO_CXX11_OVERRIDE
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#  define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+#define BOOST_COMPILER "GCC-XML C++ version " __GCCXML__
+
+

src/boost/config/compiler/greenhills.hpp

@@ -0,0 +1,28 @@
+//  (C) Copyright John Maddock 2001. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Greenhills C++ compiler setup:
+
+#define BOOST_COMPILER "Greenhills C++ version " BOOST_STRINGIZE(__ghs)
+
+#include <boost/config/compiler/common_edg.hpp>
+
+//
+// versions check:
+// we don't support Greenhills prior to version 0:
+#if __ghs < 0
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version is 0:
+#if (__ghs > 0)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+

src/boost/config/compiler/hp_acc.hpp

@@ -0,0 +1,149 @@
+//  (C) Copyright John Maddock 2001 - 2003.
+//  (C) Copyright Jens Maurer 2001 - 2003.
+//  (C) Copyright Aleksey Gurtovoy 2002.
+//  (C) Copyright David Abrahams 2002 - 2003.
+//  (C) Copyright Toon Knapen 2003.
+//  (C) Copyright Boris Gubenko 2006 - 2007.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  HP aCC C++ compiler setup:
+
+#if defined(__EDG__)
+#include <boost/config/compiler/common_edg.hpp>
+#endif
+
+#if (__HP_aCC <= 33100)
+#    define BOOST_NO_INTEGRAL_INT64_T
+#    define BOOST_NO_OPERATORS_IN_NAMESPACE
+#  if !defined(_NAMESPACE_STD)
+#     define BOOST_NO_STD_LOCALE
+#     define BOOST_NO_STRINGSTREAM
+#  endif
+#endif
+
+#if (__HP_aCC <= 33300)
+// member templates are sufficiently broken that we disable them for now
+#    define BOOST_NO_MEMBER_TEMPLATES
+#    define BOOST_NO_DEPENDENT_NESTED_DERIVATIONS
+#    define BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE
+#endif
+
+#if (__HP_aCC <= 38000)
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif
+
+#if (__HP_aCC > 50000) && (__HP_aCC < 60000)
+#    define BOOST_NO_UNREACHABLE_RETURN_DETECTION
+#    define BOOST_NO_TEMPLATE_TEMPLATES
+#    define BOOST_NO_SWPRINTF
+#    define BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS
+#    define BOOST_NO_IS_ABSTRACT
+#    define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#endif
+
+// optional features rather than defects:
+#if (__HP_aCC >= 33900)
+#    define BOOST_HAS_LONG_LONG
+#    define BOOST_HAS_PARTIAL_STD_ALLOCATOR
+#endif
+
+#if (__HP_aCC >= 50000 ) && (__HP_aCC <= 53800 ) || (__HP_aCC < 31300 )
+#    define BOOST_NO_MEMBER_TEMPLATE_KEYWORD
+#endif
+
+// This macro should not be defined when compiling in strict ansi
+// mode, but, currently, we don't have the ability to determine
+// what standard mode we are compiling with. Some future version
+// of aCC6 compiler will provide predefined macros reflecting the
+// compilation options, including the standard mode.
+#if (__HP_aCC >= 60000) || ((__HP_aCC > 38000) && defined(__hpxstd98))
+#    define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif
+
+#define BOOST_COMPILER "HP aCC version " BOOST_STRINGIZE(__HP_aCC)
+
+//
+// versions check:
+// we don't support HP aCC prior to version 33000:
+#if __HP_aCC < 33000
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+
+//
+// Extended checks for supporting aCC on PA-RISC
+#if __HP_aCC > 30000 && __HP_aCC < 50000
+#  if __HP_aCC < 38000
+      // versions prior to version A.03.80 not supported
+#     error "Compiler version not supported - version A.03.80 or higher is required"
+#  elif !defined(__hpxstd98)
+      // must compile using the option +hpxstd98 with version A.03.80 and above
+#     error "Compiler option '+hpxstd98' is required for proper support"
+#  endif //PA-RISC
+#endif
+
+//
+// C++0x features
+//
+//   See boost\config\suffix.hpp for BOOST_NO_LONG_LONG
+//
+#if !defined(__EDG__)
+
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CHAR16_T
+#define BOOST_NO_CXX11_CHAR32_T
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+/*
+  See https://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1443331 and
+      https://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1443436
+*/
+
+#if (__HP_aCC < 62500) || !defined(HP_CXX0x_SOURCE)
+  #define BOOST_NO_CXX11_VARIADIC_MACROS
+#endif
+
+#endif
+
+//
+// last known and checked version for HP-UX/ia64 is 61300
+// last known and checked version for PA-RISC is 38000
+#if ((__HP_aCC > 61300) || ((__HP_aCC > 38000) && defined(__hpxstd98)))
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif

src/boost/config/compiler/intel.hpp

@@ -0,0 +1,577 @@
+//  (C) Copyright John Maddock 2001-8.
+//  (C) Copyright Peter Dimov 2001.
+//  (C) Copyright Jens Maurer 2001.
+//  (C) Copyright David Abrahams 2002 - 2003.
+//  (C) Copyright Aleksey Gurtovoy 2002 - 2003.
+//  (C) Copyright Guillaume Melquiond 2002 - 2003.
+//  (C) Copyright Beman Dawes 2003.
+//  (C) Copyright Martin Wille 2003.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Intel compiler setup:
+
+#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1500) && (defined(_MSC_VER) || defined(__GNUC__))
+
+#ifdef _MSC_VER
+
+#include <boost/config/compiler/visualc.hpp>
+
+#undef BOOST_MSVC
+#undef BOOST_MSVC_FULL_VER
+
+#if (__INTEL_COMPILER >= 1500) && (_MSC_VER >= 1900)
+//
+// These appear to be supported, even though VC++ may not support them:
+//
+#define BOOST_HAS_EXPM1
+#define BOOST_HAS_LOG1P
+#undef BOOST_NO_CXX14_BINARY_LITERALS
+// This one may be a little risky to enable??
+#undef BOOST_NO_SFINAE_EXPR
+
+#endif
+
+#if (__INTEL_COMPILER <= 1600) && !defined(BOOST_NO_CXX14_VARIABLE_TEMPLATES)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+#else // defined(_MSC_VER)
+
+#include <boost/config/compiler/gcc.hpp>
+
+#undef BOOST_GCC_VERSION
+#undef BOOST_GCC_CXX11
+#undef BOOST_GCC
+#undef BOOST_FALLTHROUGH
+
+// Broken in all versions up to 17 (newer versions not tested)
+#if (__INTEL_COMPILER <= 1700) && !defined(BOOST_NO_CXX14_CONSTEXPR)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+
+#if (__INTEL_COMPILER >= 1800) && (__cplusplus >= 201703)
+#  define BOOST_FALLTHROUGH [[fallthrough]]
+#endif
+
+#endif // defined(_MSC_VER)
+
+#undef BOOST_COMPILER
+
+#if defined(__INTEL_COMPILER)
+#if __INTEL_COMPILER == 9999
+#  define BOOST_INTEL_CXX_VERSION 1200 // Intel bug in 12.1.
+#else
+#  define BOOST_INTEL_CXX_VERSION __INTEL_COMPILER
+#endif
+#elif defined(__ICL)
+#  define BOOST_INTEL_CXX_VERSION __ICL
+#elif defined(__ICC)
+#  define BOOST_INTEL_CXX_VERSION __ICC
+#elif defined(__ECC)
+#  define BOOST_INTEL_CXX_VERSION __ECC
+#endif
+
+// Flags determined by comparing output of 'icpc -dM -E' with and without '-std=c++0x'
+#if (!(defined(_WIN32) || defined(_WIN64)) && defined(__STDC_HOSTED__) && (__STDC_HOSTED__ && (BOOST_INTEL_CXX_VERSION <= 1200))) || defined(__GXX_EXPERIMENTAL_CPP0X__) || defined(__GXX_EXPERIMENTAL_CXX0X__)
+#  define BOOST_INTEL_STDCXX0X
+#endif
+#if defined(_MSC_VER) && (_MSC_VER >= 1600)
+#  define BOOST_INTEL_STDCXX0X
+#endif
+
+#ifdef __GNUC__
+#  define BOOST_INTEL_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#endif
+
+#if !defined(BOOST_COMPILER)
+#  if defined(BOOST_INTEL_STDCXX0X)
+#    define BOOST_COMPILER "Intel C++ C++0x mode version " BOOST_STRINGIZE(BOOST_INTEL_CXX_VERSION)
+#  else
+#    define BOOST_COMPILER "Intel C++ version " BOOST_STRINGIZE(BOOST_INTEL_CXX_VERSION)
+#  endif
+#endif
+
+#define BOOST_INTEL BOOST_INTEL_CXX_VERSION
+
+#if defined(_WIN32) || defined(_WIN64)
+#  define BOOST_INTEL_WIN BOOST_INTEL
+#else
+#  define BOOST_INTEL_LINUX BOOST_INTEL
+#endif
+
+#else // defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1500) && (defined(_MSC_VER) || defined(__GNUC__))
+
+#include <boost/config/compiler/common_edg.hpp>
+
+#if defined(__INTEL_COMPILER)
+#if __INTEL_COMPILER == 9999
+#  define BOOST_INTEL_CXX_VERSION 1200 // Intel bug in 12.1.
+#else
+#  define BOOST_INTEL_CXX_VERSION __INTEL_COMPILER
+#endif
+#elif defined(__ICL)
+#  define BOOST_INTEL_CXX_VERSION __ICL
+#elif defined(__ICC)
+#  define BOOST_INTEL_CXX_VERSION __ICC
+#elif defined(__ECC)
+#  define BOOST_INTEL_CXX_VERSION __ECC
+#endif
+
+// Flags determined by comparing output of 'icpc -dM -E' with and without '-std=c++0x'
+#if (!(defined(_WIN32) || defined(_WIN64)) && defined(__STDC_HOSTED__) && (__STDC_HOSTED__ && (BOOST_INTEL_CXX_VERSION <= 1200))) || defined(__GXX_EXPERIMENTAL_CPP0X__) || defined(__GXX_EXPERIMENTAL_CXX0X__)
+#  define BOOST_INTEL_STDCXX0X
+#endif
+#if defined(_MSC_VER) && (_MSC_VER >= 1600)
+#  define BOOST_INTEL_STDCXX0X
+#endif
+
+#ifdef __GNUC__
+#  define BOOST_INTEL_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#endif
+
+#if !defined(BOOST_COMPILER)
+#  if defined(BOOST_INTEL_STDCXX0X)
+#    define BOOST_COMPILER "Intel C++ C++0x mode version " BOOST_STRINGIZE(BOOST_INTEL_CXX_VERSION)
+#  else
+#    define BOOST_COMPILER "Intel C++ version " BOOST_STRINGIZE(BOOST_INTEL_CXX_VERSION)
+#  endif
+#endif
+
+#define BOOST_INTEL BOOST_INTEL_CXX_VERSION
+
+#if defined(_WIN32) || defined(_WIN64)
+#  define BOOST_INTEL_WIN BOOST_INTEL
+#else
+#  define BOOST_INTEL_LINUX BOOST_INTEL
+#endif
+
+#if (BOOST_INTEL_CXX_VERSION <= 600)
+
+#  if defined(_MSC_VER) && (_MSC_VER <= 1300) // added check for <= VC 7 (Peter Dimov)
+
+// Boost libraries assume strong standard conformance unless otherwise
+// indicated by a config macro. As configured by Intel, the EDG front-end
+// requires certain compiler options be set to achieve that strong conformance.
+// Particularly /Qoption,c,--arg_dep_lookup (reported by Kirk Klobe & Thomas Witt)
+// and /Zc:wchar_t,forScope. See boost-root/tools/build/intel-win32-tools.jam for
+// details as they apply to particular versions of the compiler. When the
+// compiler does not predefine a macro indicating if an option has been set,
+// this config file simply assumes the option has been set.
+// Thus BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP will not be defined, even if
+// the compiler option is not enabled.
+
+#     define BOOST_NO_SWPRINTF
+#  endif
+
+// Void returns, 64 bit integrals don't work when emulating VC 6 (Peter Dimov)
+
+#  if defined(_MSC_VER) && (_MSC_VER <= 1200)
+#     define BOOST_NO_VOID_RETURNS
+#     define BOOST_NO_INTEGRAL_INT64_T
+#  endif
+
+#endif
+
+#if (BOOST_INTEL_CXX_VERSION <= 710) && defined(_WIN32)
+#  define BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS
+#endif
+
+// See http://aspn.activestate.com/ASPN/Mail/Message/boost/1614864
+#if BOOST_INTEL_CXX_VERSION < 600
+#  define BOOST_NO_INTRINSIC_WCHAR_T
+#else
+// We should test the macro _WCHAR_T_DEFINED to check if the compiler
+// supports wchar_t natively. *BUT* there is a problem here: the standard
+// headers define this macro if they typedef wchar_t. Anyway, we're lucky
+// because they define it without a value, while Intel C++ defines it
+// to 1. So we can check its value to see if the macro was defined natively
+// or not.
+// Under UNIX, the situation is exactly the same, but the macro _WCHAR_T
+// is used instead.
+#  if ((_WCHAR_T_DEFINED + 0) == 0) && ((_WCHAR_T + 0) == 0)
+#    define BOOST_NO_INTRINSIC_WCHAR_T
+#  endif
+#endif
+
+#if defined(__GNUC__) && !defined(BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL)
+//
+// Figure out when Intel is emulating this gcc bug
+// (All Intel versions prior to 9.0.26, and versions
+// later than that if they are set up to emulate gcc 3.2
+// or earlier):
+//
+#  if ((__GNUC__ == 3) && (__GNUC_MINOR__ <= 2)) || (BOOST_INTEL < 900) || (__INTEL_COMPILER_BUILD_DATE < 20050912)
+#     define BOOST_FUNCTION_SCOPE_USING_DECLARATION_BREAKS_ADL
+#  endif
+#endif
+#if (defined(__GNUC__) && (__GNUC__ < 4)) || (defined(_WIN32) && (BOOST_INTEL_CXX_VERSION <= 1200)) || (BOOST_INTEL_CXX_VERSION <= 1200)
+// GCC or VC emulation:
+#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif
+//
+// Verify that we have actually got BOOST_NO_INTRINSIC_WCHAR_T
+// set correctly, if we don't do this now, we will get errors later
+// in type_traits code among other things, getting this correct
+// for the Intel compiler is actually remarkably fragile and tricky:
+//
+#ifdef __cplusplus
+#if defined(BOOST_NO_INTRINSIC_WCHAR_T)
+#include <cwchar>
+template< typename T > struct assert_no_intrinsic_wchar_t;
+template<> struct assert_no_intrinsic_wchar_t<wchar_t> { typedef void type; };
+// if you see an error here then you need to unset BOOST_NO_INTRINSIC_WCHAR_T
+// where it is defined above:
+typedef assert_no_intrinsic_wchar_t<unsigned short>::type assert_no_intrinsic_wchar_t_;
+#else
+template< typename T > struct assert_intrinsic_wchar_t;
+template<> struct assert_intrinsic_wchar_t<wchar_t> {};
+// if you see an error here then define BOOST_NO_INTRINSIC_WCHAR_T on the command line:
+template<> struct assert_intrinsic_wchar_t<unsigned short> {};
+#endif
+#endif
+
+#if defined(_MSC_VER) && (_MSC_VER+0 >= 1000)
+#  if _MSC_VER >= 1200
+#     define BOOST_HAS_MS_INT64
+#  endif
+#  define BOOST_NO_SWPRINTF
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#elif defined(_WIN32)
+#  define BOOST_DISABLE_WIN32
+#endif
+
+// I checked version 6.0 build 020312Z, it implements the NRVO.
+// Correct this as you find out which version of the compiler
+// implemented the NRVO first.  (Daniel Frey)
+#if (BOOST_INTEL_CXX_VERSION >= 600)
+#  define BOOST_HAS_NRVO
+#endif
+
+// Branch prediction hints
+// I'm not sure 8.0 was the first version to support these builtins,
+// update the condition if the version is not accurate. (Andrey Semashev)
+#if defined(__GNUC__) && BOOST_INTEL_CXX_VERSION >= 800
+#define BOOST_LIKELY(x) __builtin_expect(x, 1)
+#define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
+#endif
+
+// RTTI
+// __RTTI is the EDG macro
+// __INTEL_RTTI__ is the Intel macro
+// __GXX_RTTI is the g++ macro
+// _CPPRTTI is the MSVC++ macro
+#if !defined(__RTTI) && !defined(__INTEL_RTTI__) && !defined(__GXX_RTTI) && !defined(_CPPRTTI)
+
+#if !defined(BOOST_NO_RTTI)
+# define BOOST_NO_RTTI
+#endif
+
+// in MS mode, static typeid works even when RTTI is off
+#if !defined(_MSC_VER) && !defined(BOOST_NO_TYPEID)
+# define BOOST_NO_TYPEID
+#endif
+
+#endif
+
+//
+// versions check:
+// we don't support Intel prior to version 6.0:
+#if BOOST_INTEL_CXX_VERSION < 600
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+
+// Intel on MacOS requires
+#if defined(__APPLE__) && defined(__INTEL_COMPILER)
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif
+
+// Intel on Altix Itanium
+#if defined(__itanium__) && defined(__INTEL_COMPILER)
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif
+
+//
+// An attempt to value-initialize a pointer-to-member may trigger an
+// internal error on Intel <= 11.1 (last checked version), as was
+// reported by John Maddock, Intel support issue 589832, May 2010.
+// Moreover, according to test results from Huang-Vista-x86_32_intel,
+// intel-vc9-win-11.1 may leave a non-POD array uninitialized, in some
+// cases when it should be value-initialized.
+// (Niels Dekker, LKEB, May 2010)
+// Apparently Intel 12.1 (compiler version number 9999 !!) has the same issue (compiler regression).
+#if defined(__INTEL_COMPILER)
+#  if (__INTEL_COMPILER <= 1110) || (__INTEL_COMPILER == 9999) || (defined(_WIN32) && (__INTEL_COMPILER < 1600))
+#    define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#  endif
+#endif
+
+//
+// Dynamic shared object (DSO) and dynamic-link library (DLL) support
+//
+#if defined(__GNUC__) && (__GNUC__ >= 4)
+#  define BOOST_SYMBOL_EXPORT __attribute__((visibility("default")))
+#  define BOOST_SYMBOL_IMPORT
+#  define BOOST_SYMBOL_VISIBLE __attribute__((visibility("default")))
+#endif
+
+// Type aliasing hint
+#if defined(__GNUC__) && (BOOST_INTEL_CXX_VERSION >= 1300)
+#  define BOOST_MAY_ALIAS __attribute__((__may_alias__))
+#endif
+
+//
+// C++0x features
+// For each feature we need to check both the Intel compiler version, 
+// and the version of MSVC or GCC that we are emulating.
+// See http://software.intel.com/en-us/articles/c0x-features-supported-by-intel-c-compiler/
+// for a list of which features were implemented in which Intel releases.
+//
+#if defined(BOOST_INTEL_STDCXX0X)
+// BOOST_NO_CXX11_CONSTEXPR:
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40600)) && !defined(_MSC_VER)
+// Available in earlier Intel versions, but fail our tests:
+#  undef BOOST_NO_CXX11_CONSTEXPR
+#endif
+// BOOST_NO_CXX11_NULLPTR:
+#if (BOOST_INTEL_CXX_VERSION >= 1210) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40600)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+#  undef BOOST_NO_CXX11_NULLPTR
+#endif
+// BOOST_NO_CXX11_TEMPLATE_ALIASES
+#if (BOOST_INTEL_CXX_VERSION >= 1210) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40700)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_TEMPLATE_ALIASES
+#endif
+
+// BOOST_NO_CXX11_DECLTYPE
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40300)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+#  undef BOOST_NO_CXX11_DECLTYPE
+#endif
+
+// BOOST_NO_CXX11_DECLTYPE_N3276
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40800)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_DECLTYPE_N3276
+#endif
+
+// BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40300)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#endif
+
+// BOOST_NO_CXX11_RVALUE_REFERENCES
+#if (BOOST_INTEL_CXX_VERSION >= 1300) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40300)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+// This is available from earlier Intel versions, but breaks Filesystem and other libraries:
+#  undef BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+
+// BOOST_NO_CXX11_STATIC_ASSERT
+#if (BOOST_INTEL_CXX_VERSION >= 1110) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40300)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+#  undef BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+
+// BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+
+// BOOST_NO_CXX11_VARIADIC_MACROS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40200)) && (!defined(_MSC_VER) || (_MSC_VER >= 1400))
+#  undef BOOST_NO_CXX11_VARIADIC_MACROS
+#endif
+
+// BOOST_NO_CXX11_AUTO_DECLARATIONS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+#  undef BOOST_NO_CXX11_AUTO_DECLARATIONS
+#endif
+
+// BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+#  undef BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#endif
+
+// BOOST_NO_CXX11_CHAR16_T
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_VER >= 9999))
+#  undef BOOST_NO_CXX11_CHAR16_T
+#endif
+
+// BOOST_NO_CXX11_CHAR32_T
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_VER >= 9999))
+#  undef BOOST_NO_CXX11_CHAR32_T
+#endif
+
+// BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#endif
+
+// BOOST_NO_CXX11_DELETED_FUNCTIONS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_DELETED_FUNCTIONS
+#endif
+
+// BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_VER >= 1700))
+#  undef BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#endif
+
+// BOOST_NO_CXX11_SCOPED_ENUMS
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40501)) && (!defined(_MSC_VER) || (_MSC_VER >= 1700))
+// This is available but broken in earlier Intel releases.
+#  undef BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+
+// BOOST_NO_SFINAE_EXPR
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40500)) && (!defined(_MSC_VER) || (_MSC_VER >= 9999))
+#  undef BOOST_NO_SFINAE_EXPR
+#endif
+
+// BOOST_NO_CXX11_SFINAE_EXPR
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40800)) && !defined(_MSC_VER)
+#  undef BOOST_NO_CXX11_SFINAE_EXPR
+#endif
+
+// BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40500)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+// This is available in earlier Intel releases, but breaks Multiprecision:
+#  undef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#endif
+
+// BOOST_NO_CXX11_LAMBDAS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40500)) && (!defined(_MSC_VER) || (_MSC_VER >= 1600))
+#  undef BOOST_NO_CXX11_LAMBDAS
+#endif
+
+// BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40500))
+#  undef BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#endif
+
+// BOOST_NO_CXX11_RANGE_BASED_FOR
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40600)) && (!defined(_MSC_VER) || (_MSC_VER >= 1700))
+#  undef BOOST_NO_CXX11_RANGE_BASED_FOR
+#endif
+
+// BOOST_NO_CXX11_RAW_LITERALS
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40500)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_RAW_LITERALS
+#endif
+
+// BOOST_NO_CXX11_UNICODE_LITERALS
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40500)) && (!defined(_MSC_VER) || (_MSC_VER >= 9999))
+#  undef BOOST_NO_CXX11_UNICODE_LITERALS
+#endif
+
+// BOOST_NO_CXX11_NOEXCEPT
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40600)) && (!defined(_MSC_VER) || (_MSC_VER >= 9999))
+// Available in earlier Intel release, but generates errors when used with 
+// conditional exception specifications, for example in multiprecision:
+#  undef BOOST_NO_CXX11_NOEXCEPT
+#endif
+
+// BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40600)) && (!defined(_MSC_VER) || (_MSC_VER >= 9999))
+#  undef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#endif
+
+// BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40700)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 190021730))
+#  undef BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#endif
+
+// BOOST_NO_CXX11_ALIGNAS
+#if (BOOST_INTEL_CXX_VERSION >= 1500) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40800)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 190021730))
+#  undef BOOST_NO_CXX11_ALIGNAS
+#  undef BOOST_NO_CXX11_ALIGNOF
+#endif
+
+// BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#if (BOOST_INTEL_CXX_VERSION >= 1200) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 180020827))
+#  undef BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#endif
+
+// BOOST_NO_CXX11_INLINE_NAMESPACES
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40400)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 190021730))
+#  undef BOOST_NO_CXX11_INLINE_NAMESPACES
+#endif
+
+// BOOST_NO_CXX11_REF_QUALIFIERS
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40800)) && (!defined(_MSC_VER) || (_MSC_FULL_VER >= 190021730))
+#  undef BOOST_NO_CXX11_REF_QUALIFIERS
+#endif
+
+// BOOST_NO_CXX11_FINAL
+// BOOST_NO_CXX11_OVERRIDE
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 40700)) && (!defined(_MSC_VER) || (_MSC_VER >= 1700))
+#  undef BOOST_NO_CXX11_FINAL
+#  undef BOOST_NO_CXX11_OVERRIDE
+#endif
+
+// BOOST_NO_CXX11_UNRESTRICTED_UNION
+#if (BOOST_INTEL_CXX_VERSION >= 1400) && (!defined(BOOST_INTEL_GCC_VERSION) || (BOOST_INTEL_GCC_VERSION >= 50100)) && (!defined(_MSC_VER))
+#  undef BOOST_NO_CXX11_UNRESTRICTED_UNION
+#endif
+
+#endif // defined(BOOST_INTEL_STDCXX0X)
+
+//
+// Broken in all versions up to 15:
+#define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+
+#if defined(BOOST_INTEL_STDCXX0X) && (BOOST_INTEL_CXX_VERSION <= 1310)
+#  define BOOST_NO_CXX11_HDR_FUTURE
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#endif
+
+#if defined(BOOST_INTEL_STDCXX0X) && (BOOST_INTEL_CXX_VERSION == 1400)
+// A regression in Intel's compiler means that <tuple> seems to be broken in this release as well as <future> :
+#  define BOOST_NO_CXX11_HDR_FUTURE
+#  define BOOST_NO_CXX11_HDR_TUPLE
+#endif
+
+#if (BOOST_INTEL_CXX_VERSION < 1200)
+//
+// fenv.h appears not to work with Intel prior to 12.0:
+//
+#  define BOOST_NO_FENV_H
+#endif
+
+// Intel 13.10 fails to access defaulted functions of a base class declared in private or protected sections,
+// producing the following errors:
+// error #453: protected function "..." (declared at ...") is not accessible through a "..." pointer or object
+#if (BOOST_INTEL_CXX_VERSION <= 1310)
+#  define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
+#endif
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1600)
+#  define BOOST_HAS_STDINT_H
+#endif
+
+#if defined(__CUDACC__)
+#  if defined(BOOST_GCC_CXX11)
+#    define BOOST_NVCC_CXX11
+#  else
+#    define BOOST_NVCC_CXX03
+#  endif
+#endif
+
+#if defined(__LP64__) && defined(__GNUC__) && (BOOST_INTEL_CXX_VERSION >= 1310) && !defined(BOOST_NVCC_CXX03)
+#  define BOOST_HAS_INT128
+#endif
+
+#endif // defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1500) && (defined(_MSC_VER) || defined(__GNUC__))
+//
+// last known and checked version:
+#if (BOOST_INTEL_CXX_VERSION > 1700)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "Boost.Config is older than your compiler - please check for an updated Boost release."
+#  elif defined(_MSC_VER)
+//
+//      We don't emit this warning any more, since we have so few
+//      defect macros set anyway (just the one).
+//
+//#     pragma message("boost: Unknown compiler version - please run the configure tests and report the results")
+#  endif
+#endif
+

src/boost/config/compiler/kai.hpp

@@ -0,0 +1,33 @@
+//  (C) Copyright John Maddock 2001. 
+//  (C) Copyright David Abrahams 2002. 
+//  (C) Copyright Aleksey Gurtovoy 2002. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Kai C++ compiler setup:
+
+#include <boost/config/compiler/common_edg.hpp>
+
+#   if (__KCC_VERSION <= 4001) || !defined(BOOST_STRICT_CONFIG)
+      // at least on Sun, the contents of <cwchar> is not in namespace std
+#     define BOOST_NO_STDC_NAMESPACE
+#   endif
+
+// see also common_edg.hpp which needs a special check for __KCC
+# if !defined(_EXCEPTIONS) && !defined(BOOST_NO_EXCEPTIONS)
+#     define BOOST_NO_EXCEPTIONS
+# endif
+
+//
+// last known and checked version is 4001:
+#if (__KCC_VERSION > 4001)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+
+

src/boost/config/compiler/metrowerks.hpp

@@ -0,0 +1,198 @@
+//  (C) Copyright John Maddock 2001.
+//  (C) Copyright Darin Adler 2001.
+//  (C) Copyright Peter Dimov 2001.
+//  (C) Copyright David Abrahams 2001 - 2002.
+//  (C) Copyright Beman Dawes 2001 - 2003.
+//  (C) Copyright Stefan Slapeta 2004.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Metrowerks C++ compiler setup:
+
+// locale support is disabled when linking with the dynamic runtime
+#   ifdef _MSL_NO_LOCALE
+#     define BOOST_NO_STD_LOCALE
+#   endif
+
+#   if __MWERKS__ <= 0x2301  // 5.3
+#     define BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+#     define BOOST_NO_POINTER_TO_MEMBER_CONST
+#     define BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS
+#     define BOOST_NO_MEMBER_TEMPLATE_KEYWORD
+#   endif
+
+#   if __MWERKS__ <= 0x2401  // 6.2
+//#     define BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+#   endif
+
+#   if(__MWERKS__ <= 0x2407)  // 7.x
+#     define BOOST_NO_MEMBER_FUNCTION_SPECIALIZATIONS
+#     define BOOST_NO_UNREACHABLE_RETURN_DETECTION
+#   endif
+
+#   if(__MWERKS__ <= 0x3003)  // 8.x
+#     define BOOST_NO_SFINAE
+#    endif
+
+// the "|| !defined(BOOST_STRICT_CONFIG)" part should apply to the last
+// tested version *only*:
+#   if(__MWERKS__ <= 0x3207) || !defined(BOOST_STRICT_CONFIG) // 9.6
+#     define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#     define BOOST_NO_IS_ABSTRACT
+#    endif
+
+#if !__option(wchar_type)
+#   define BOOST_NO_INTRINSIC_WCHAR_T
+#endif
+
+#if !__option(exceptions) && !defined(BOOST_NO_EXCEPTIONS)
+#   define BOOST_NO_EXCEPTIONS
+#endif
+
+#if (__INTEL__ && _WIN32) || (__POWERPC__ && macintosh)
+#   if __MWERKS__ == 0x3000
+#     define BOOST_COMPILER_VERSION 8.0
+#   elif __MWERKS__ == 0x3001
+#     define BOOST_COMPILER_VERSION 8.1
+#   elif __MWERKS__ == 0x3002
+#     define BOOST_COMPILER_VERSION 8.2
+#   elif __MWERKS__ == 0x3003
+#     define BOOST_COMPILER_VERSION 8.3
+#   elif __MWERKS__ == 0x3200
+#     define BOOST_COMPILER_VERSION 9.0
+#   elif __MWERKS__ == 0x3201
+#     define BOOST_COMPILER_VERSION 9.1
+#   elif __MWERKS__ == 0x3202
+#     define BOOST_COMPILER_VERSION 9.2
+#   elif __MWERKS__ == 0x3204
+#     define BOOST_COMPILER_VERSION 9.3
+#   elif __MWERKS__ == 0x3205
+#     define BOOST_COMPILER_VERSION 9.4
+#   elif __MWERKS__ == 0x3206
+#     define BOOST_COMPILER_VERSION 9.5
+#   elif __MWERKS__ == 0x3207
+#     define BOOST_COMPILER_VERSION 9.6
+#   else
+#     define BOOST_COMPILER_VERSION __MWERKS__
+#   endif
+#else
+#  define BOOST_COMPILER_VERSION __MWERKS__
+#endif
+
+//
+// C++0x features
+//
+//   See boost\config\suffix.hpp for BOOST_NO_LONG_LONG
+//
+#if __MWERKS__ > 0x3206 && __option(rvalue_refs)
+#  define BOOST_HAS_RVALUE_REFS
+#else
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CHAR16_T
+#define BOOST_NO_CXX11_CHAR32_T
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_VARIADIC_MACROS
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+#define BOOST_COMPILER "Metrowerks CodeWarrior C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
+
+//
+// versions check:
+// we don't support Metrowerks prior to version 5.3:
+#if __MWERKS__ < 0x2301
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version:
+#if (__MWERKS__ > 0x3205)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+
+
+
+
+
+

src/boost/config/compiler/mpw.hpp

@@ -0,0 +1,140 @@
+//  (C) Copyright John Maddock 2001 - 2002.
+//  (C) Copyright Aleksey Gurtovoy 2002.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  MPW C++ compilers setup:
+
+#   if    defined(__SC__)
+#     define BOOST_COMPILER "MPW SCpp version " BOOST_STRINGIZE(__SC__)
+#   elif defined(__MRC__)
+#     define BOOST_COMPILER "MPW MrCpp version " BOOST_STRINGIZE(__MRC__)
+#   else
+#     error "Using MPW compiler configuration by mistake.  Please update."
+#   endif
+
+//
+// MPW 8.90:
+//
+#if (MPW_CPLUS <= 0x890) || !defined(BOOST_STRICT_CONFIG)
+#  define BOOST_NO_CV_SPECIALIZATIONS
+#  define BOOST_NO_DEPENDENT_NESTED_DERIVATIONS
+#  define BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS
+#  define BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+#  define BOOST_NO_INTRINSIC_WCHAR_T
+#  define BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+#  define BOOST_NO_USING_TEMPLATE
+
+#  define BOOST_NO_CWCHAR
+#  define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+
+#  define BOOST_NO_STD_ALLOCATOR /* actually a bug with const reference overloading */
+
+#endif
+
+//
+// C++0x features
+//
+//   See boost\config\suffix.hpp for BOOST_NO_LONG_LONG
+//
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CHAR16_T
+#define BOOST_NO_CXX11_CHAR32_T
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_VARIADIC_MACROS
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+//
+// versions check:
+// we don't support MPW prior to version 8.9:
+#if MPW_CPLUS < 0x890
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version is 0x890:
+#if (MPW_CPLUS > 0x890)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+

src/boost/config/compiler/nvcc.hpp

@@ -0,0 +1,61 @@
+//  (C) Copyright Eric Jourdanneau, Joel Falcou 2010
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  NVIDIA CUDA C++ compiler setup
+
+#ifndef BOOST_COMPILER
+#  define BOOST_COMPILER "NVIDIA CUDA C++ Compiler"
+#endif
+
+#if defined(__CUDACC_VER_MAJOR__) && defined(__CUDACC_VER_MINOR__) && defined(__CUDACC_VER_BUILD__)
+#  define BOOST_CUDA_VERSION (__CUDACC_VER_MAJOR__ * 1000000 + __CUDACC_VER_MINOR__ * 10000 + __CUDACC_VER_BUILD__)
+#else
+// We don't really know what the CUDA version is, but it's definitely before 7.5:
+#  define BOOST_CUDA_VERSION 7000000
+#endif
+
+// NVIDIA Specific support
+// BOOST_GPU_ENABLED : Flag a function or a method as being enabled on the host and device
+#define BOOST_GPU_ENABLED __host__ __device__
+
+#if !defined(__clang__) || defined(__NVCC__)
+// A bug in version 7.0 of CUDA prevents use of variadic templates in some occasions
+// https://svn.boost.org/trac/boost/ticket/11897
+// This is fixed in 7.5. As the following version macro was introduced in 7.5 an existance
+// check is enough to detect versions < 7.5
+#if BOOST_CUDA_VERSION < 7050000
+#   define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+// The same bug is back again in 8.0:
+#if (BOOST_CUDA_VERSION > 8000000) && (BOOST_CUDA_VERSION < 8010000)
+#   define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+// CUDA (8.0) has no constexpr support in msvc mode:
+#if defined(_MSC_VER) && (BOOST_CUDA_VERSION < 9000000)
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+
+#endif
+
+#ifdef __CUDACC__
+//
+// When compiing .cu files, there's a bunch of stuff that doesn't work with msvc:
+//
+#if defined(_MSC_VER)
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#endif
+//
+// And this one effects the NVCC front end,
+// See https://svn.boost.org/trac/boost/ticket/13049
+//
+#if (BOOST_CUDA_VERSION >= 8000000) && (BOOST_CUDA_VERSION < 8010000)
+#  define BOOST_NO_CXX11_NOEXCEPT
+#endif
+
+#endif
+

src/boost/config/compiler/pathscale.hpp

@@ -0,0 +1,138 @@
+//  (C) Copyright Bryce Lelbach 2011
+
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+// PathScale EKOPath C++ Compiler
+
+#ifndef BOOST_COMPILER
+#  define BOOST_COMPILER "PathScale EKOPath C++ Compiler version " __PATHSCALE__
+#endif
+
+#if __PATHCC__ >= 6 
+// PathCC is based on clang, and supports the __has_*() builtins used 
+// to detect features in clang.hpp. Since the clang toolset is much 
+// better maintained, it is more convenient to reuse its definitions. 
+#  include "boost/config/compiler/clang.hpp"
+#elif __PATHCC__ >= 4 
+#  define BOOST_MSVC6_MEMBER_TEMPLATES
+#  define BOOST_HAS_UNISTD_H
+#  define BOOST_HAS_STDINT_H
+#  define BOOST_HAS_SIGACTION
+#  define BOOST_HAS_SCHED_YIELD
+#  define BOOST_HAS_THREADS
+#  define BOOST_HAS_PTHREADS
+#  define BOOST_HAS_PTHREAD_YIELD
+#  define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
+#  define BOOST_HAS_PARTIAL_STD_ALLOCATOR
+#  define BOOST_HAS_NRVO
+#  define BOOST_HAS_NL_TYPES_H
+#  define BOOST_HAS_NANOSLEEP
+#  define BOOST_HAS_LONG_LONG
+#  define BOOST_HAS_LOG1P
+#  define BOOST_HAS_GETTIMEOFDAY
+#  define BOOST_HAS_EXPM1
+#  define BOOST_HAS_DIRENT_H
+#  define BOOST_HAS_CLOCK_GETTIME
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#  define BOOST_NO_SFINAE_EXPR
+#  define BOOST_NO_CXX11_SFINAE_EXPR
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#  define BOOST_NO_CXX11_RANGE_BASED_FOR
+#  define BOOST_NO_CXX11_RAW_LITERALS
+#  define BOOST_NO_CXX11_NULLPTR
+#  define BOOST_NO_CXX11_NUMERIC_LIMITS
+#  define BOOST_NO_CXX11_NOEXCEPT
+#  define BOOST_NO_CXX11_LAMBDAS
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#  define BOOST_NO_MS_INT64_NUMERIC_LIMITS
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#  define BOOST_NO_CXX11_DECLTYPE
+#  define BOOST_NO_CXX11_DECLTYPE_N3276
+#  define BOOST_NO_CXX11_CONSTEXPR
+#  define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#  define BOOST_NO_CXX11_CHAR32_T
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#  define BOOST_NO_CXX11_HDR_UNORDERED_SET
+#  define BOOST_NO_CXX11_HDR_UNORDERED_MAP
+#  define BOOST_NO_CXX11_HDR_TYPEINDEX
+#  define BOOST_NO_CXX11_HDR_TUPLE
+#  define BOOST_NO_CXX11_HDR_THREAD
+#  define BOOST_NO_CXX11_HDR_SYSTEM_ERROR
+#  define BOOST_NO_CXX11_HDR_REGEX
+#  define BOOST_NO_CXX11_HDR_RATIO
+#  define BOOST_NO_CXX11_HDR_RANDOM
+#  define BOOST_NO_CXX11_HDR_MUTEX
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#  define BOOST_NO_CXX11_HDR_FUTURE
+#  define BOOST_NO_CXX11_HDR_FORWARD_LIST
+#  define BOOST_NO_CXX11_HDR_CONDITION_VARIABLE
+#  define BOOST_NO_CXX11_HDR_CODECVT
+#  define BOOST_NO_CXX11_HDR_CHRONO
+#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#  define BOOST_NO_CXX11_FINAL
+#  define BOOST_NO_CXX11_OVERRIDE
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#  define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+#endif

src/boost/config/compiler/pgi.hpp

@@ -0,0 +1,23 @@
+//  (C) Copyright Noel Belcourt 2007.
+//  Copyright 2017, NVIDIA CORPORATION.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  PGI C++ compiler setup:
+
+#define BOOST_COMPILER_VERSION __PGIC__##__PGIC_MINOR__
+#define BOOST_COMPILER "PGI compiler version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
+
+// PGI is mostly GNU compatible.  So start with that.
+#include <boost/config/compiler/gcc.hpp>
+
+// Now adjust for things that are different.
+
+// __float128 is a typedef, not a distinct type.
+#undef BOOST_HAS_FLOAT128
+
+// __int128 is not supported.
+#undef BOOST_HAS_INT128

src/boost/config/compiler/sgi_mipspro.hpp

@@ -0,0 +1,29 @@
+//  (C) Copyright John Maddock 2001 - 2002. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  SGI C++ compiler setup:
+
+#define BOOST_COMPILER "SGI Irix compiler version " BOOST_STRINGIZE(_COMPILER_VERSION)
+
+#include <boost/config/compiler/common_edg.hpp>
+
+//
+// Threading support:
+// Turn this on unconditionally here, it will get turned off again later
+// if no threading API is detected.
+//
+#define BOOST_HAS_THREADS
+#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+
+#undef BOOST_NO_SWPRINTF
+#undef BOOST_DEDUCED_TYPENAME
+
+//
+// version check:
+// probably nothing to do here?
+
+

src/boost/config/compiler/sunpro_cc.hpp

@@ -0,0 +1,222 @@
+//  (C) Copyright John Maddock 2001.
+//  (C) Copyright Jens Maurer 2001 - 2003.
+//  (C) Copyright Peter Dimov 2002.
+//  (C) Copyright Aleksey Gurtovoy 2002 - 2003.
+//  (C) Copyright David Abrahams 2002.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Sun C++ compiler setup:
+
+#    if __SUNPRO_CC <= 0x500
+#      define BOOST_NO_MEMBER_TEMPLATES
+#      define BOOST_NO_FUNCTION_TEMPLATE_ORDERING
+#    endif
+
+#    if (__SUNPRO_CC <= 0x520)
+       //
+       // Sunpro 5.2 and earler:
+       //
+       // although sunpro 5.2 supports the syntax for
+       // inline initialization it often gets the value
+       // wrong, especially where the value is computed
+       // from other constants (J Maddock 6th May 2001)
+#      define BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+
+       // Although sunpro 5.2 supports the syntax for
+       // partial specialization, it often seems to
+       // bind to the wrong specialization.  Better
+       // to disable it until suppport becomes more stable
+       // (J Maddock 6th May 2001).
+#      define BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+#    endif
+
+#    if (__SUNPRO_CC <= 0x530)
+       // Requesting debug info (-g) with Boost.Python results
+       // in an internal compiler error for "static const"
+       // initialized in-class.
+       //    >> Assertion:   (../links/dbg_cstabs.cc, line 611)
+       //         while processing ../test.cpp at line 0.
+       // (Jens Maurer according to Gottfried Ganssauge 04 Mar 2002)
+#      define BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+
+       // SunPro 5.3 has better support for partial specialization,
+       // but breaks when compiling std::less<shared_ptr<T> >
+       // (Jens Maurer 4 Nov 2001).
+
+       // std::less specialization fixed as reported by George
+       // Heintzelman; partial specialization re-enabled
+       // (Peter Dimov 17 Jan 2002)
+
+//#      define BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+       // integral constant expressions with 64 bit numbers fail
+#      define BOOST_NO_INTEGRAL_INT64_T
+#    endif
+
+#    if (__SUNPRO_CC < 0x570)
+#      define BOOST_NO_TEMPLATE_TEMPLATES
+       // see http://lists.boost.org/MailArchives/boost/msg47184.php
+       // and http://lists.boost.org/MailArchives/boost/msg47220.php
+#      define BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+#      define BOOST_NO_SFINAE
+#      define BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS
+#    endif
+#    if (__SUNPRO_CC <= 0x580)
+#      define BOOST_NO_IS_ABSTRACT
+#    endif
+
+#    if (__SUNPRO_CC <= 0x5100)
+       // Sun 5.10 may not correctly value-initialize objects of
+       // some user defined types, as was reported in April 2010
+       // (CR 6947016), and confirmed by Steve Clamage.
+       // (Niels Dekker, LKEB, May 2010).
+#      define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#    endif
+
+//
+// Dynamic shared object (DSO) and dynamic-link library (DLL) support
+//
+#if __SUNPRO_CC > 0x500
+#  define BOOST_SYMBOL_EXPORT __global
+#  define BOOST_SYMBOL_IMPORT __global
+#  define BOOST_SYMBOL_VISIBLE __global
+#endif
+
+// Deprecated symbol markup
+// Oracle Studio 12.4 supports deprecated attribute with a message; this is the first release that supports the attribute.
+#if (__SUNPRO_CC >= 0x5130)
+#define BOOST_DEPRECATED(msg) __attribute__((deprecated(msg)))
+#endif
+
+#if (__SUNPRO_CC < 0x5130)
+// C++03 features in 12.4:
+#define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_ADL_BARRIER
+#define BOOST_NO_CXX11_VARIADIC_MACROS
+#endif
+
+#if (__SUNPRO_CC < 0x5130) || (__cplusplus < 201100)
+// C++11 only featuires in 12.4:
+#define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#define BOOST_NO_CXX11_CHAR16_T
+#define BOOST_NO_CXX11_CHAR32_T
+#define BOOST_NO_CXX11_CONSTEXPR
+#define BOOST_NO_CXX11_DECLTYPE
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_NO_CXX11_SCOPED_ENUMS
+#define BOOST_NO_CXX11_STATIC_ASSERT
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#endif
+
+#if (__SUNPRO_CC < 0x5140) || (__cplusplus < 201103)
+#define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+
+#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+//
+// C++0x features
+//
+#  define BOOST_HAS_LONG_LONG
+
+#define BOOST_NO_CXX11_SFINAE_EXPR
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304) || (__cplusplus < 201402L)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+// Turn on threading support for Solaris 12.
+// Ticket #11972
+#if (__SUNPRO_CC >= 0x5140) && defined(__SunOS_5_12) && !defined(BOOST_HAS_THREADS)
+# define BOOST_HAS_THREADS
+#endif
+
+//
+// Version
+//
+
+#define BOOST_COMPILER "Sun compiler version " BOOST_STRINGIZE(__SUNPRO_CC)
+
+//
+// versions check:
+// we don't support sunpro prior to version 4:
+#if __SUNPRO_CC < 0x400
+#error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version:
+#if (__SUNPRO_CC > 0x5150)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "Boost.Config is older than your compiler - please check for an updated Boost release."
+#  endif
+#endif

src/boost/config/compiler/vacpp.hpp

@@ -0,0 +1,186 @@
+//  (C) Copyright John Maddock 2001 - 2003.
+//  (C) Copyright Toon Knapen 2001 - 2003.
+//  (C) Copyright Lie-Quan Lee 2001.
+//  (C) Copyright Markus Schoepflin 2002 - 2003.
+//  (C) Copyright Beman Dawes 2002 - 2003.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  Visual Age (IBM) C++ compiler setup:
+
+#if __IBMCPP__ <= 501
+#  define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#  define BOOST_NO_MEMBER_FUNCTION_SPECIALIZATIONS
+#endif
+
+#if (__IBMCPP__ <= 502)
+// Actually the compiler supports inclass member initialization but it
+// requires a definition for the class member and it doesn't recognize
+// it as an integral constant expression when used as a template argument.
+#  define BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+#  define BOOST_NO_INTEGRAL_INT64_T
+#  define BOOST_NO_MEMBER_TEMPLATE_KEYWORD
+#endif
+
+#if (__IBMCPP__ <= 600) || !defined(BOOST_STRICT_CONFIG)
+#  define BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS
+#endif
+
+#if (__IBMCPP__ <= 1110)
+// XL C++ V11.1 and earlier versions may not always value-initialize
+// a temporary object T(), when T is a non-POD aggregate class type.
+// Michael Wong (IBM Canada Ltd) has confirmed this issue and gave it
+// high priority. -- Niels Dekker (LKEB), May 2010.
+#  define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+#endif
+
+//
+// On AIX thread support seems to be indicated by _THREAD_SAFE:
+//
+#ifdef _THREAD_SAFE
+#  define BOOST_HAS_THREADS
+#endif
+
+#define BOOST_COMPILER "IBM Visual Age version " BOOST_STRINGIZE(__IBMCPP__)
+
+//
+// versions check:
+// we don't support Visual age prior to version 5:
+#if __IBMCPP__ < 500
+#error "Compiler not supported or configured - please reconfigure"
+#endif
+//
+// last known and checked version is 1210:
+#if (__IBMCPP__ > 1210)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "boost: Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+// Some versions of the compiler have issues with default arguments on partial specializations
+#if __IBMCPP__ <= 1010
+#define BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS
+#endif
+
+// Type aliasing hint. Supported since XL C++ 13.1
+#if (__IBMCPP__ >= 1310)
+#  define BOOST_MAY_ALIAS __attribute__((__may_alias__))
+#endif
+
+//
+// C++0x features
+//
+//   See boost\config\suffix.hpp for BOOST_NO_LONG_LONG
+//
+#if ! __IBMCPP_AUTO_TYPEDEDUCTION
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#endif
+#if ! __IBMCPP_UTF_LITERAL__
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#endif
+#if ! __IBMCPP_CONSTEXPR
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+#if ! __IBMCPP_DECLTYPE
+#  define BOOST_NO_CXX11_DECLTYPE
+#else
+#  define BOOST_HAS_DECLTYPE
+#endif
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+#define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#if ! __IBMCPP_EXPLICIT_CONVERSION_OPERATORS
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#endif
+#if ! __IBMCPP_EXTERN_TEMPLATE
+#  define BOOST_NO_CXX11_EXTERN_TEMPLATE
+#endif
+#if ! __IBMCPP_VARIADIC_TEMPLATES
+// not enabled separately at this time
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#endif
+#define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#if ! __IBMCPP_RVALUE_REFERENCES
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+#if ! __IBMCPP_SCOPED_ENUM
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#if ! __IBMCPP_STATIC_ASSERT
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#if ! __IBMCPP_VARIADIC_TEMPLATES
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+#if ! __C99_MACRO_WITH_VA_ARGS
+#  define BOOST_NO_CXX11_VARIADIC_MACROS
+#endif
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#define BOOST_NO_CXX11_INLINE_NAMESPACES
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+
+// C++ 14:
+#if !defined(__cpp_aggregate_nsdmi) || (__cpp_aggregate_nsdmi < 201304)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+#if !defined(__cpp_binary_literals) || (__cpp_binary_literals < 201304)
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+#if !defined(__cpp_constexpr) || (__cpp_constexpr < 201304)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+#if !defined(__cpp_decltype_auto) || (__cpp_decltype_auto < 201304)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+#if (__cplusplus < 201304) // There's no SD6 check for this....
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+#if !defined(__cpp_generic_lambdas) || (__cpp_generic_lambdas < 201304)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+#if !defined(__cpp_init_captures) || (__cpp_init_captures < 201304)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+#if !defined(__cpp_return_type_deduction) || (__cpp_return_type_deduction < 201304)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+#if !defined(__cpp_variable_templates) || (__cpp_variable_templates < 201304)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+// C++17
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+#if !defined(__cpp_inline_variables) || (__cpp_inline_variables < 201606)
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#endif
+#if !defined(__cpp_fold_expressions) || (__cpp_fold_expressions < 201603)
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif

src/boost/config/compiler/visualc.hpp

@@ -0,0 +1,395 @@
+//  (C) Copyright John Maddock 2001 - 2003.
+//  (C) Copyright Darin Adler 2001 - 2002.
+//  (C) Copyright Peter Dimov 2001.
+//  (C) Copyright Aleksey Gurtovoy 2002.
+//  (C) Copyright David Abrahams 2002 - 2003.
+//  (C) Copyright Beman Dawes 2002 - 2003.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+//
+//  Microsoft Visual C++ compiler setup:
+//
+//  We need to be careful with the checks in this file, as contrary
+//  to popular belief there are versions with _MSC_VER with the final
+//  digit non-zero (mainly the MIPS cross compiler).
+//
+//  So we either test _MSC_VER >= XXXX or else _MSC_VER < XXXX.
+//  No other comparisons (==, >, or <=) are safe.
+//
+
+#define BOOST_MSVC _MSC_VER
+
+//
+// Helper macro BOOST_MSVC_FULL_VER for use in Boost code:
+//
+#if _MSC_FULL_VER > 100000000
+#  define BOOST_MSVC_FULL_VER _MSC_FULL_VER
+#else
+#  define BOOST_MSVC_FULL_VER (_MSC_FULL_VER * 10)
+#endif
+
+// Attempt to suppress VC6 warnings about the length of decorated names (obsolete):
+#pragma warning( disable : 4503 ) // warning: decorated name length exceeded
+
+#define BOOST_HAS_PRAGMA_ONCE
+
+//
+// versions check:
+// we don't support Visual C++ prior to version 7.1:
+#if _MSC_VER < 1310
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+
+// VS2005 (VC8) docs: __assume has been in Visual C++ for multiple releases
+#define BOOST_UNREACHABLE_RETURN(x) __assume(0);
+
+#if _MSC_FULL_VER < 180020827
+#  define BOOST_NO_FENV_H
+#endif
+
+#if _MSC_VER < 1400
+// although a conforming signature for swprint exists in VC7.1
+// it appears not to actually work:
+#  define BOOST_NO_SWPRINTF
+// Our extern template tests also fail for this compiler:
+#  define BOOST_NO_CXX11_EXTERN_TEMPLATE
+// Variadic macros do not exist for VC7.1 and lower
+#  define BOOST_NO_CXX11_VARIADIC_MACROS
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#endif
+
+#if _MSC_VER < 1500  // 140X == VC++ 8.0
+#  define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
+#endif
+
+#if _MSC_VER < 1600  // 150X == VC++ 9.0
+   // A bug in VC9:
+#  define BOOST_NO_ADL_BARRIER
+#endif
+
+
+#ifndef _NATIVE_WCHAR_T_DEFINED
+#  define BOOST_NO_INTRINSIC_WCHAR_T
+#endif
+
+//
+// check for exception handling support:
+#if !defined(_CPPUNWIND) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+
+//
+// __int64 support:
+//
+#define BOOST_HAS_MS_INT64
+#if defined(_MSC_EXTENSIONS) || (_MSC_VER >= 1400)
+#   define BOOST_HAS_LONG_LONG
+#else
+#   define BOOST_NO_LONG_LONG
+#endif
+#if (_MSC_VER >= 1400) && !defined(_DEBUG)
+#   define BOOST_HAS_NRVO
+#endif
+#if _MSC_VER >= 1600  // 160X == VC++ 10.0
+#  define BOOST_HAS_PRAGMA_DETECT_MISMATCH
+#endif
+//
+// disable Win32 API's if compiler extensions are
+// turned off:
+//
+#if !defined(_MSC_EXTENSIONS) && !defined(BOOST_DISABLE_WIN32)
+#  define BOOST_DISABLE_WIN32
+#endif
+#if !defined(_CPPRTTI) && !defined(BOOST_NO_RTTI)
+#  define BOOST_NO_RTTI
+#endif
+
+// Deprecated symbol markup
+#if (_MSC_VER >= 1400)
+#define BOOST_DEPRECATED(msg) __declspec(deprecated(msg))
+#else
+// MSVC 7.1 only supports the attribute without a message
+#define BOOST_DEPRECATED(msg) __declspec(deprecated)
+#endif
+
+//
+// TR1 features:
+//
+#if (_MSC_VER >= 1700) && defined(_HAS_CXX17) && (_HAS_CXX17 > 0)
+// # define BOOST_HAS_TR1_HASH          // don't know if this is true yet.
+// # define BOOST_HAS_TR1_TYPE_TRAITS   // don't know if this is true yet.
+# define BOOST_HAS_TR1_UNORDERED_MAP
+# define BOOST_HAS_TR1_UNORDERED_SET
+#endif
+
+//
+// C++0x features
+//
+//   See above for BOOST_NO_LONG_LONG
+
+// C++ features supported by VC++ 10 (aka 2010)
+//
+#if _MSC_VER < 1600
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#  define BOOST_NO_CXX11_LAMBDAS
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#  define BOOST_NO_CXX11_NULLPTR
+#  define BOOST_NO_CXX11_DECLTYPE
+#endif // _MSC_VER < 1600
+
+#if _MSC_VER >= 1600
+#  define BOOST_HAS_STDINT_H
+#endif
+
+// C++11 features supported by VC++ 11 (aka 2012)
+//
+#if _MSC_VER < 1700
+#  define BOOST_NO_CXX11_FINAL
+#  define BOOST_NO_CXX11_RANGE_BASED_FOR
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#  define BOOST_NO_CXX11_OVERRIDE
+#endif // _MSC_VER < 1700
+
+// C++11 features supported by VC++ 12 (aka 2013).
+//
+#if _MSC_FULL_VER < 180020827
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#  define BOOST_NO_CXX11_RAW_LITERALS
+#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#  define BOOST_NO_CXX11_DECLTYPE_N3276
+#endif
+
+#if _MSC_FULL_VER >= 180020827
+#define BOOST_HAS_EXPM1
+#define BOOST_HAS_LOG1P
+#endif
+
+// C++11 features supported by VC++ 14 (aka 2015)
+//
+#if (_MSC_FULL_VER < 190023026)
+#  define BOOST_NO_CXX11_NOEXCEPT
+#  define BOOST_NO_CXX11_DEFAULTED_MOVES
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#  define BOOST_NO_CXX11_ALIGNAS
+#  define BOOST_NO_CXX11_ALIGNOF
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#  define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#endif
+// C++11 features supported by VC++ 14 update 3 (aka 2015)
+//
+#if (_MSC_FULL_VER < 190024210)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#  define BOOST_NO_SFINAE_EXPR
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+
+// C++14 features supported by VC++ 14.1 (Visual Studio 2017)
+//
+#if (_MSC_VER < 1910)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+
+// C++17 features supported by VC++ 14.1 (Visual Studio 2017) Update 3
+//
+#if (_MSC_VER < 1911) || (_MSVC_LANG < 201703)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+// Let the defaults handle these now:
+//#  define BOOST_NO_CXX17_HDR_OPTIONAL
+//#  define BOOST_NO_CXX17_HDR_STRING_VIEW
+#endif
+
+// MSVC including version 14 has not yet completely
+// implemented value-initialization, as is reported:
+// "VC++ does not value-initialize members of derived classes without
+// user-declared constructor", reported in 2009 by Sylvester Hesp:
+// https://connect.microsoft.com/VisualStudio/feedback/details/484295
+// "Presence of copy constructor breaks member class initialization",
+// reported in 2009 by Alex Vakulenko:
+// https://connect.microsoft.com/VisualStudio/feedback/details/499606
+// "Value-initialization in new-expression", reported in 2005 by
+// Pavel Kuznetsov (MetaCommunications Engineering):
+// https://connect.microsoft.com/VisualStudio/feedback/details/100744
+// Reported again by John Maddock in 2015 for VC14:
+// https://connect.microsoft.com/VisualStudio/feedback/details/1582233/c-subobjects-still-not-value-initialized-correctly
+// See also: http://www.boost.org/libs/utility/value_init.htm#compiler_issues
+// (Niels Dekker, LKEB, May 2010)
+// Still present in VC15.5, Dec 2017.
+#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+//
+// C++ 11:
+//
+// This is supported with /permissive- for 15.5 onwards, unfortunately we appear to have no way to tell
+// if this is in effect or not, in any case nothing in Boost is currently using this, so we'll just go
+// on defining it for now:
+//
+#if (_MSC_FULL_VER < 193030705)  || (_MSVC_LANG < 202004)
+#  define BOOST_NO_TWO_PHASE_NAME_LOOKUP
+#endif
+
+#if (_MSC_VER < 1912) || (_MSVC_LANG < 201402)
+// Supported from msvc-15.5 onwards:
+#define BOOST_NO_CXX11_SFINAE_EXPR
+#endif
+#if (_MSC_VER < 1915) || (_MSVC_LANG < 201402)
+// C++ 14:
+// Still gives internal compiler error for msvc-15.5:
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+// C++ 17:
+#if (_MSC_VER < 1912) || (_MSVC_LANG < 201703)
+#define BOOST_NO_CXX17_INLINE_VARIABLES
+#define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+
+//
+// Things that don't work in clr mode:
+//
+#ifdef _M_CEE
+#ifndef BOOST_NO_CXX11_THREAD_LOCAL
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+#if !defined(BOOST_NO_SFINAE_EXPR) && !defined(_MSVC_LANG)
+#  define BOOST_NO_SFINAE_EXPR
+#endif
+#ifndef BOOST_NO_CXX11_REF_QUALIFIERS
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#endif
+#endif
+#ifdef _M_CEE_PURE
+#ifndef BOOST_NO_CXX11_CONSTEXPR
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+#endif
+
+//
+// prefix and suffix headers:
+//
+#ifndef BOOST_ABI_PREFIX
+#  define BOOST_ABI_PREFIX "boost/config/abi/msvc_prefix.hpp"
+#endif
+#ifndef BOOST_ABI_SUFFIX
+#  define BOOST_ABI_SUFFIX "boost/config/abi/msvc_suffix.hpp"
+#endif
+
+//
+// Approximate compiler conformance version
+//
+#ifdef _MSVC_LANG
+#  define BOOST_CXX_VERSION _MSVC_LANG
+#elif defined(_HAS_CXX17)
+#  define BOOST_CXX_VERSION 201703L
+#elif BOOST_MSVC >= 1916
+#  define BOOST_CXX_VERSION 201402L
+#endif
+
+#if BOOST_CXX_VERSION >= 201703L
+#  define BOOST_ATTRIBUTE_UNUSED [[maybe_unused]]
+#endif
+
+#ifndef BOOST_COMPILER
+// TODO:
+// these things are mostly bogus. 1200 means version 12.0 of the compiler. The
+// artificial versions assigned to them only refer to the versions of some IDE
+// these compilers have been shipped with, and even that is not all of it. Some
+// were shipped with freely downloadable SDKs, others as crosscompilers in eVC.
+// IOW, you can't use these 'versions' in any sensible way. Sorry.
+# if defined(UNDER_CE)
+#   if _MSC_VER < 1400
+      // Note: I'm not aware of any CE compiler with version 13xx
+#      if defined(BOOST_ASSERT_CONFIG)
+#         error "boost: Unknown EVC++ compiler version - please run the configure tests and report the results"
+#      else
+#         pragma message("boost: Unknown EVC++ compiler version - please run the configure tests and report the results")
+#      endif
+#   elif _MSC_VER < 1500
+#     define BOOST_COMPILER_VERSION evc8
+#   elif _MSC_VER < 1600
+#     define BOOST_COMPILER_VERSION evc9
+#   elif _MSC_VER < 1700
+#     define BOOST_COMPILER_VERSION evc10
+#   elif _MSC_VER < 1800 
+#     define BOOST_COMPILER_VERSION evc11 
+#   elif _MSC_VER < 1900 
+#     define BOOST_COMPILER_VERSION evc12
+#   elif _MSC_VER < 2000  
+#     define BOOST_COMPILER_VERSION evc14
+#   else
+#      if defined(BOOST_ASSERT_CONFIG)
+#         error "boost: Unknown EVC++ compiler version - please run the configure tests and report the results"
+#      else
+#         pragma message("boost: Unknown EVC++ compiler version - please run the configure tests and report the results")
+#      endif
+#   endif
+# else
+#   if _MSC_VER < 1200
+      // Note: Versions up to 10.0 aren't supported.
+#     define BOOST_COMPILER_VERSION 5.0
+#   elif _MSC_VER < 1300
+#     define BOOST_COMPILER_VERSION 6.0
+#   elif _MSC_VER < 1310
+#     define BOOST_COMPILER_VERSION 7.0
+#   elif _MSC_VER < 1400
+#     define BOOST_COMPILER_VERSION 7.1
+#   elif _MSC_VER < 1500
+#     define BOOST_COMPILER_VERSION 8.0
+#   elif _MSC_VER < 1600
+#     define BOOST_COMPILER_VERSION 9.0
+#   elif _MSC_VER < 1700
+#     define BOOST_COMPILER_VERSION 10.0
+#   elif _MSC_VER < 1800 
+#     define BOOST_COMPILER_VERSION 11.0
+#   elif _MSC_VER < 1900
+#     define BOOST_COMPILER_VERSION 12.0
+#   elif _MSC_VER < 1910
+#     define BOOST_COMPILER_VERSION 14.0
+#   elif _MSC_VER < 1920
+#     define BOOST_COMPILER_VERSION 14.1
+#   elif _MSC_VER < 1930
+#     define BOOST_COMPILER_VERSION 14.2
+#   elif _MSC_VER < 1940
+#     define BOOST_COMPILER_VERSION 14.3
+#   else
+#     define BOOST_COMPILER_VERSION _MSC_VER
+#   endif
+# endif
+
+#  define BOOST_COMPILER "Microsoft Visual C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)
+#endif
+
+#include <boost/config/pragma_message.hpp>
+
+//
+// last known and checked version is 19.3x (VS2022):
+#if (_MSC_VER >= 1940)
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "Boost.Config is older than your current compiler version."
+#  elif !defined(BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE)
+      //
+      // Disabled as of March 2018 - the pace of VS releases is hard to keep up with
+      // and in any case, we have relatively few defect macros defined now.
+      // BOOST_PRAGMA_MESSAGE("Info: Boost.Config is older than your compiler version - probably nothing bad will happen - but you may wish to look for an updated Boost version. Define BOOST_CONFIG_SUPPRESS_OUTDATED_MESSAGE to suppress this message.")
+#  endif
+#endif

src/boost/config/compiler/xlcpp.hpp

@@ -0,0 +1,299 @@
+// (C) Copyright Douglas Gregor 2010
+//
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+//  compiler setup for IBM XL C/C++ for Linux (Little Endian) based on clang.
+
+#define BOOST_HAS_PRAGMA_ONCE
+
+// Detecting `-fms-extension` compiler flag assuming that _MSC_VER defined when that flag is used.
+#if defined (_MSC_VER) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 4))
+#   define BOOST_HAS_PRAGMA_DETECT_MISMATCH
+#endif
+
+// When compiling with clang before __has_extension was defined,
+// even if one writes 'defined(__has_extension) && __has_extension(xxx)',
+// clang reports a compiler error. So the only workaround found is:
+
+#ifndef __has_extension
+#define __has_extension __has_feature
+#endif
+
+#ifndef __has_cpp_attribute
+#define __has_cpp_attribute(x) 0
+#endif
+
+#if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+
+#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_RTTI)
+#  define BOOST_NO_RTTI
+#endif
+
+#if !__has_feature(cxx_rtti) && !defined(BOOST_NO_TYPEID)
+#  define BOOST_NO_TYPEID
+#endif
+
+#if defined(__int64) && !defined(__GNUC__)
+#  define BOOST_HAS_MS_INT64
+#endif
+
+#define BOOST_HAS_NRVO
+
+// Branch prediction hints
+#if defined(__has_builtin)
+#if __has_builtin(__builtin_expect)
+#define BOOST_LIKELY(x) __builtin_expect(x, 1)
+#define BOOST_UNLIKELY(x) __builtin_expect(x, 0)
+#endif
+#endif
+
+// Clang supports "long long" in all compilation modes.
+#define BOOST_HAS_LONG_LONG
+
+//
+// Dynamic shared object (DSO) and dynamic-link library (DLL) support
+//
+#if !defined(_WIN32) && !defined(__WIN32__) && !defined(WIN32)
+#  define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
+#  define BOOST_SYMBOL_IMPORT
+#  define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
+#endif
+
+//
+// The BOOST_FALLTHROUGH macro can be used to annotate implicit fall-through
+// between switch labels.
+//
+#if __cplusplus >= 201103L && defined(__has_warning)
+#  if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
+#    define BOOST_FALLTHROUGH [[clang::fallthrough]]
+#  endif
+#endif
+
+#if !__has_feature(cxx_auto_type)
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#endif
+
+//
+// Currently clang on Windows using VC++ RTL does not support C++11's char16_t or char32_t
+//
+#if defined(_MSC_VER) || !(defined(__GXX_EXPERIMENTAL_CXX0X__) || __cplusplus >= 201103L)
+#  define BOOST_NO_CXX11_CHAR16_T
+#  define BOOST_NO_CXX11_CHAR32_T
+#endif
+
+#if !__has_feature(cxx_constexpr)
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+
+#if !__has_feature(cxx_decltype)
+#  define BOOST_NO_CXX11_DECLTYPE
+#endif
+
+#if !__has_feature(cxx_decltype_incomplete_return_types)
+#  define BOOST_NO_CXX11_DECLTYPE_N3276
+#endif
+
+#if !__has_feature(cxx_defaulted_functions)
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#endif
+
+#if !__has_feature(cxx_deleted_functions)
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#endif
+
+#if !__has_feature(cxx_explicit_conversions)
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#endif
+
+#if !__has_feature(cxx_default_function_template_args)
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#endif
+
+#if !__has_feature(cxx_generalized_initializers)
+#  define BOOST_NO_CXX11_HDR_INITIALIZER_LIST
+#endif
+
+#if !__has_feature(cxx_lambdas)
+#  define BOOST_NO_CXX11_LAMBDAS
+#endif
+
+#if !__has_feature(cxx_local_type_template_args)
+#  define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+#endif
+
+#if !__has_feature(cxx_noexcept)
+#  define BOOST_NO_CXX11_NOEXCEPT
+#endif
+
+#if !__has_feature(cxx_nullptr)
+#  define BOOST_NO_CXX11_NULLPTR
+#endif
+
+#if !__has_feature(cxx_range_for)
+#  define BOOST_NO_CXX11_RANGE_BASED_FOR
+#endif
+
+#if !__has_feature(cxx_raw_string_literals)
+#  define BOOST_NO_CXX11_RAW_LITERALS
+#endif
+
+#if !__has_feature(cxx_reference_qualified_functions)
+#  define BOOST_NO_CXX11_REF_QUALIFIERS
+#endif
+
+#if !__has_feature(cxx_generalized_initializers)
+#  define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#endif
+
+#if !__has_feature(cxx_rvalue_references)
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+
+#if !__has_feature(cxx_strong_enums)
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+
+#if !__has_feature(cxx_static_assert)
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+
+#if !__has_feature(cxx_alias_templates)
+#  define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#endif
+
+#if !__has_feature(cxx_unicode_literals)
+#  define BOOST_NO_CXX11_UNICODE_LITERALS
+#endif
+
+#if !__has_feature(cxx_variadic_templates)
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#endif
+
+#if !__has_feature(cxx_user_literals)
+#  define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#endif
+
+#if !__has_feature(cxx_alignas)
+#  define BOOST_NO_CXX11_ALIGNAS
+#endif
+
+#if !__has_feature(cxx_alignof)
+#  define BOOST_NO_CXX11_ALIGNOF
+#endif
+
+#if !__has_feature(cxx_trailing_return)
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#endif
+
+#if !__has_feature(cxx_inline_namespaces)
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#endif
+
+#if !__has_feature(cxx_override_control)
+#  define BOOST_NO_CXX11_FINAL
+#  define BOOST_NO_CXX11_OVERRIDE
+#endif
+
+#if !__has_feature(cxx_unrestricted_unions)
+#  define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#endif
+
+#if !(__has_feature(__cxx_binary_literals__) || __has_extension(__cxx_binary_literals__))
+#  define BOOST_NO_CXX14_BINARY_LITERALS
+#endif
+
+#if !__has_feature(__cxx_decltype_auto__)
+#  define BOOST_NO_CXX14_DECLTYPE_AUTO
+#endif
+
+#if !__has_feature(__cxx_aggregate_nsdmi__)
+#  define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#endif
+
+#if !__has_feature(__cxx_init_captures__)
+#  define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#endif
+
+#if !__has_feature(__cxx_generic_lambdas__)
+#  define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#endif
+
+// clang < 3.5 has a defect with dependent type, like following.
+//
+//  template <class T>
+//  constexpr typename enable_if<pred<T> >::type foo(T &)
+//  { } // error: no return statement in constexpr function
+//
+// This issue also affects C++11 mode, but C++11 constexpr requires return stmt.
+// Therefore we don't care such case.
+//
+// Note that we can't check Clang version directly as the numbering system changes depending who's
+// creating the Clang release (see https://github.com/boostorg/config/pull/39#issuecomment-59927873)
+// so instead verify that we have a feature that was introduced at the same time as working C++14
+// constexpr (generic lambda's in this case):
+//
+#if !__has_feature(__cxx_generic_lambdas__) || !__has_feature(__cxx_relaxed_constexpr__)
+#  define BOOST_NO_CXX14_CONSTEXPR
+#endif
+
+#if !__has_feature(__cxx_return_type_deduction__)
+#  define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#endif
+
+#if !__has_feature(__cxx_variable_templates__)
+#  define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#endif
+
+#if !defined(__cpp_structured_bindings) || (__cpp_structured_bindings < 201606)
+#  define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#endif
+
+#if !defined(__cpp_if_constexpr) || (__cpp_if_constexpr < 201606)
+#  define BOOST_NO_CXX17_IF_CONSTEXPR
+#endif
+
+// Clang 3.9+ in c++1z
+#if !__has_cpp_attribute(fallthrough) || __cplusplus < 201406L
+#  define BOOST_NO_CXX17_INLINE_VARIABLES
+#  define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#endif
+
+#if !__has_feature(cxx_thread_local)
+#  define BOOST_NO_CXX11_THREAD_LOCAL
+#endif
+
+#if __cplusplus < 201400
+// All versions with __cplusplus above this value seem to support this:
+#  define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#endif
+
+// Deprecated symbol markup
+#if __has_attribute(deprecated)
+#define BOOST_DEPRECATED(msg) __attribute__((deprecated(msg)))
+#endif
+
+// Unused attribute:
+#if defined(__GNUC__) && (__GNUC__ >= 4)
+#  define BOOST_ATTRIBUTE_UNUSED __attribute__((unused))
+#endif
+
+// Type aliasing hint.
+#if __has_attribute(__may_alias__)
+#  define BOOST_MAY_ALIAS __attribute__((__may_alias__))
+#endif
+
+#ifndef BOOST_COMPILER
+#  define BOOST_COMPILER "Clang version " __clang_version__
+#endif
+
+// Macro used to identify the Clang compiler.
+#define BOOST_CLANG 1
+
+#define BOOST_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)

src/boost/config/compiler/xlcpp_zos.hpp

@@ -0,0 +1,173 @@
+//  Copyright (c) 2017 Dynatrace
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+
+//  See http://www.boost.org for most recent version.
+
+//  Compiler setup for IBM z/OS XL C/C++ compiler.
+
+// Oldest compiler version currently supported is 2.1 (V2R1)
+#if !defined(__IBMCPP__) || !defined(__COMPILER_VER__) || __COMPILER_VER__ < 0x42010000
+#  error "Compiler not supported or configured - please reconfigure"
+#endif
+
+#if __COMPILER_VER__ > 0x42010000
+#  if defined(BOOST_ASSERT_CONFIG)
+#     error "Unknown compiler version - please run the configure tests and report the results"
+#  endif
+#endif
+
+#define BOOST_COMPILER "IBM z/OS XL C/C++ version " BOOST_STRINGIZE(__COMPILER_VER__)
+#define BOOST_XLCPP_ZOS __COMPILER_VER__
+
+// -------------------------------------
+
+#include <features.h> // For __UU, __C99, __TR1, ...
+
+#if !defined(__IBMCPP_DEFAULTED_AND_DELETED_FUNCTIONS)
+#  define BOOST_NO_CXX11_DELETED_FUNCTIONS
+#  define BOOST_NO_CXX11_DEFAULTED_FUNCTIONS
+#  define BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS
+#endif
+
+// -------------------------------------
+
+#if defined(__UU) || defined(__C99) || defined(__TR1)
+#  define BOOST_HAS_LOG1P
+#  define BOOST_HAS_EXPM1
+#endif
+
+#if defined(__C99) || defined(__TR1)
+#  define BOOST_HAS_STDINT_H
+#else
+#  define BOOST_NO_FENV_H
+#endif
+
+// -------------------------------------
+
+#define BOOST_HAS_NRVO
+
+#if !defined(__RTTI_ALL__)
+#  define BOOST_NO_RTTI
+#endif
+
+#if !defined(_CPPUNWIND) && !defined(__EXCEPTIONS)
+#  define BOOST_NO_EXCEPTIONS
+#endif
+
+#if defined(_LONG_LONG) || defined(__IBMCPP_C99_LONG_LONG) || defined(__LL)
+#  define BOOST_HAS_LONG_LONG
+#else
+#  define BOOST_NO_LONG_LONG
+#endif
+
+#if defined(_LONG_LONG) || defined(__IBMCPP_C99_LONG_LONG) || defined(__LL) || defined(_LP64)
+#  define BOOST_HAS_MS_INT64
+#endif
+
+#define BOOST_NO_SFINAE_EXPR
+#define BOOST_NO_CXX11_SFINAE_EXPR
+
+#if defined(__IBMCPP_VARIADIC_TEMPLATES)
+#  define BOOST_HAS_VARIADIC_TMPL
+#else
+#  define BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#  define BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+#endif
+
+#if defined(__IBMCPP_STATIC_ASSERT)
+#  define BOOST_HAS_STATIC_ASSERT
+#else
+#  define BOOST_NO_CXX11_STATIC_ASSERT
+#endif
+
+#if defined(__IBMCPP_RVALUE_REFERENCES)
+#  define BOOST_HAS_RVALUE_REFS
+#else
+#  define BOOST_NO_CXX11_RVALUE_REFERENCES
+#endif
+
+#if !defined(__IBMCPP_SCOPED_ENUM)
+#  define BOOST_NO_CXX11_SCOPED_ENUMS
+#endif
+
+#define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#define BOOST_NO_CXX11_TEMPLATE_ALIASES
+#define BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS
+
+#if !defined(__IBMCPP_EXPLICIT_CONVERSION_OPERATORS)
+#  define BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+#endif
+
+#if !defined(__IBMCPP_DECLTYPE)
+#  define BOOST_NO_CXX11_DECLTYPE
+#else
+#  define BOOST_HAS_DECLTYPE
+#endif
+#define BOOST_NO_CXX11_DECLTYPE_N3276
+
+#if !defined(__IBMCPP_INLINE_NAMESPACE)
+#  define BOOST_NO_CXX11_INLINE_NAMESPACES
+#endif
+
+#if !defined(__IBMCPP_AUTO_TYPEDEDUCTION)
+#  define BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS
+#  define BOOST_NO_CXX11_AUTO_DECLARATIONS
+#  define BOOST_NO_CXX11_TRAILING_RESULT_TYPES
+#endif
+
+#if !defined(__IBM_CHAR32_T__)
+#  define BOOST_NO_CXX11_CHAR32_T
+#endif
+#if !defined(__IBM_CHAR16_T__)
+#  define BOOST_NO_CXX11_CHAR16_T
+#endif
+
+#if !defined(__IBMCPP_CONSTEXPR)
+#  define BOOST_NO_CXX11_CONSTEXPR
+#endif
+
+#define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_UNICODE_LITERALS
+#define BOOST_NO_CXX11_RAW_LITERALS
+#define BOOST_NO_CXX11_RANGE_BASED_FOR
+#define BOOST_NO_CXX11_NULLPTR
+#define BOOST_NO_CXX11_NOEXCEPT
+#define BOOST_NO_CXX11_LAMBDAS
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
+#define BOOST_NO_CXX11_THREAD_LOCAL
+#define BOOST_NO_CXX11_REF_QUALIFIERS
+#define BOOST_NO_CXX11_FINAL
+#define BOOST_NO_CXX11_OVERRIDE
+#define BOOST_NO_CXX11_ALIGNAS
+#define BOOST_NO_CXX11_ALIGNOF
+#define BOOST_NO_CXX11_UNRESTRICTED_UNION
+#define BOOST_NO_CXX14_VARIABLE_TEMPLATES
+#define BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION
+#define BOOST_NO_CXX14_AGGREGATE_NSDMI
+#define BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES
+#define BOOST_NO_CXX14_GENERIC_LAMBDAS
+#define BOOST_NO_CXX14_DIGIT_SEPARATORS
+#define BOOST_NO_CXX14_DECLTYPE_AUTO
+#define BOOST_NO_CXX14_CONSTEXPR
+#define BOOST_NO_CXX14_BINARY_LITERALS
+#define BOOST_NO_CXX17_STRUCTURED_BINDINGS
+#define BOOST_NO_CXX17_INLINE_VARIABLES
+#define BOOST_NO_CXX17_FOLD_EXPRESSIONS
+#define BOOST_NO_CXX17_IF_CONSTEXPR
+
+// -------------------------------------
+
+#if defined(__IBM_ATTRIBUTES)
+#  define BOOST_FORCEINLINE inline __attribute__ ((__always_inline__))
+#  define BOOST_NOINLINE __attribute__ ((__noinline__))
+#  define BOOST_MAY_ALIAS __attribute__((__may_alias__))
+// No BOOST_ALIGNMENT - explicit alignment support is broken (V2R1).
+#endif
+
+extern "builtin" long __builtin_expect(long, long);
+
+#define BOOST_LIKELY(x) __builtin_expect((x) && true, 1)
+#define BOOST_UNLIKELY(x) __builtin_expect((x) && true, 0)

src/boost/config/detail/cxx_composite.hpp

@@ -0,0 +1,217 @@
+//  This file was automatically generated on Fri Oct 13 19:09:38 2023
+//  by libs/config/tools/generate.cpp
+//  Copyright John Maddock 2002-21.
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/config for the most recent version.//
+//  Revision $Id$
+//
+
+#if defined(BOOST_NO_ADL_BARRIER)\
+   || defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)\
+   || defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)\
+   || defined(BOOST_NO_COMPLETE_VALUE_INITIALIZATION)\
+   || defined(BOOST_NO_CTYPE_FUNCTIONS)\
+   || defined(BOOST_NO_CV_SPECIALIZATIONS)\
+   || defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)\
+   || defined(BOOST_NO_CWCHAR)\
+   || defined(BOOST_NO_CWCTYPE)\
+   || defined(BOOST_NO_DEPENDENT_NESTED_DERIVATIONS)\
+   || defined(BOOST_NO_DEPENDENT_TYPES_IN_TEMPLATE_VALUE_PARAMETERS)\
+   || defined(BOOST_NO_EXCEPTIONS)\
+   || defined(BOOST_NO_EXCEPTION_STD_NAMESPACE)\
+   || defined(BOOST_NO_EXPLICIT_FUNCTION_TEMPLATE_ARGUMENTS)\
+   || defined(BOOST_NO_FENV_H)\
+   || defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)\
+   || defined(BOOST_NO_FUNCTION_TYPE_SPECIALIZATIONS)\
+   || defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)\
+   || defined(BOOST_NO_INTEGRAL_INT64_T)\
+   || defined(BOOST_NO_INTRINSIC_WCHAR_T)\
+   || defined(BOOST_NO_IOSFWD)\
+   || defined(BOOST_NO_IOSTREAM)\
+   || defined(BOOST_NO_IS_ABSTRACT)\
+   || defined(BOOST_NO_LIMITS)\
+   || defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS)\
+   || defined(BOOST_NO_LONG_LONG)\
+   || defined(BOOST_NO_LONG_LONG_NUMERIC_LIMITS)\
+   || defined(BOOST_NO_MEMBER_FUNCTION_SPECIALIZATIONS)\
+   || defined(BOOST_NO_MEMBER_TEMPLATES)\
+   || defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)\
+   || defined(BOOST_NO_MEMBER_TEMPLATE_KEYWORD)\
+   || defined(BOOST_NO_NESTED_FRIENDSHIP)\
+   || defined(BOOST_NO_OPERATORS_IN_NAMESPACE)\
+   || defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS)\
+   || defined(BOOST_NO_POINTER_TO_MEMBER_CONST)\
+   || defined(BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS)\
+   || defined(BOOST_NO_PRIVATE_IN_AGGREGATE)\
+   || defined(BOOST_NO_RESTRICT_REFERENCES)\
+   || defined(BOOST_NO_RTTI)\
+   || defined(BOOST_NO_SFINAE)\
+   || defined(BOOST_NO_SFINAE_EXPR)\
+   || defined(BOOST_NO_STDC_NAMESPACE)\
+   || defined(BOOST_NO_STD_ALLOCATOR)\
+   || defined(BOOST_NO_STD_DISTANCE)\
+   || defined(BOOST_NO_STD_ITERATOR)\
+   || defined(BOOST_NO_STD_ITERATOR_TRAITS)\
+   || defined(BOOST_NO_STD_LOCALE)\
+   || defined(BOOST_NO_STD_MESSAGES)\
+   || defined(BOOST_NO_STD_MIN_MAX)\
+   || defined(BOOST_NO_STD_OUTPUT_ITERATOR_ASSIGN)\
+   || defined(BOOST_NO_STD_TYPEINFO)\
+   || defined(BOOST_NO_STD_USE_FACET)\
+   || defined(BOOST_NO_STD_WSTREAMBUF)\
+   || defined(BOOST_NO_STD_WSTRING)\
+   || defined(BOOST_NO_STRINGSTREAM)\
+   || defined(BOOST_NO_TEMPLATED_IOSTREAMS)\
+   || defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\
+   || defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)\
+   || defined(BOOST_NO_TEMPLATE_TEMPLATES)\
+   || defined(BOOST_NO_TWO_PHASE_NAME_LOOKUP)\
+   || defined(BOOST_NO_TYPEID)\
+   || defined(BOOST_NO_TYPENAME_WITH_CTOR)\
+   || defined(BOOST_NO_UNREACHABLE_RETURN_DETECTION)\
+   || defined(BOOST_NO_USING_DECLARATION_OVERLOADS_FROM_TYPENAME_BASE)\
+   || defined(BOOST_NO_USING_TEMPLATE)\
+   || defined(BOOST_NO_VOID_RETURNS)
+#    define BOOST_NO_CXX03
+#endif
+
+#if defined(BOOST_NO_CXX03)\
+   || defined(BOOST_NO_CXX11_ADDRESSOF)\
+   || defined(BOOST_NO_CXX11_ALIGNAS)\
+   || defined(BOOST_NO_CXX11_ALIGNOF)\
+   || defined(BOOST_NO_CXX11_ALLOCATOR)\
+   || defined(BOOST_NO_CXX11_AUTO_DECLARATIONS)\
+   || defined(BOOST_NO_CXX11_AUTO_MULTIDECLARATIONS)\
+   || defined(BOOST_NO_CXX11_CHAR16_T)\
+   || defined(BOOST_NO_CXX11_CHAR32_T)\
+   || defined(BOOST_NO_CXX11_CONSTEXPR)\
+   || defined(BOOST_NO_CXX11_DECLTYPE)\
+   || defined(BOOST_NO_CXX11_DECLTYPE_N3276)\
+   || defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS)\
+   || defined(BOOST_NO_CXX11_DEFAULTED_MOVES)\
+   || defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)\
+   || defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS)\
+   || defined(BOOST_NO_CXX11_EXTERN_TEMPLATE)\
+   || defined(BOOST_NO_CXX11_FINAL)\
+   || defined(BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS)\
+   || defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)\
+   || defined(BOOST_NO_CXX11_HDR_ARRAY)\
+   || defined(BOOST_NO_CXX11_HDR_ATOMIC)\
+   || defined(BOOST_NO_CXX11_HDR_CHRONO)\
+   || defined(BOOST_NO_CXX11_HDR_CONDITION_VARIABLE)\
+   || defined(BOOST_NO_CXX11_HDR_EXCEPTION)\
+   || defined(BOOST_NO_CXX11_HDR_FORWARD_LIST)\
+   || defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)\
+   || defined(BOOST_NO_CXX11_HDR_FUTURE)\
+   || defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST)\
+   || defined(BOOST_NO_CXX11_HDR_MUTEX)\
+   || defined(BOOST_NO_CXX11_HDR_RANDOM)\
+   || defined(BOOST_NO_CXX11_HDR_RATIO)\
+   || defined(BOOST_NO_CXX11_HDR_REGEX)\
+   || defined(BOOST_NO_CXX11_HDR_SYSTEM_ERROR)\
+   || defined(BOOST_NO_CXX11_HDR_THREAD)\
+   || defined(BOOST_NO_CXX11_HDR_TUPLE)\
+   || defined(BOOST_NO_CXX11_HDR_TYPEINDEX)\
+   || defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)\
+   || defined(BOOST_NO_CXX11_HDR_UNORDERED_MAP)\
+   || defined(BOOST_NO_CXX11_HDR_UNORDERED_SET)\
+   || defined(BOOST_NO_CXX11_INLINE_NAMESPACES)\
+   || defined(BOOST_NO_CXX11_LAMBDAS)\
+   || defined(BOOST_NO_CXX11_LOCAL_CLASS_TEMPLATE_PARAMETERS)\
+   || defined(BOOST_NO_CXX11_NOEXCEPT)\
+   || defined(BOOST_NO_CXX11_NON_PUBLIC_DEFAULTED_FUNCTIONS)\
+   || defined(BOOST_NO_CXX11_NULLPTR)\
+   || defined(BOOST_NO_CXX11_NUMERIC_LIMITS)\
+   || defined(BOOST_NO_CXX11_OVERRIDE)\
+   || defined(BOOST_NO_CXX11_POINTER_TRAITS)\
+   || defined(BOOST_NO_CXX11_RANGE_BASED_FOR)\
+   || defined(BOOST_NO_CXX11_RAW_LITERALS)\
+   || defined(BOOST_NO_CXX11_REF_QUALIFIERS)\
+   || defined(BOOST_NO_CXX11_RVALUE_REFERENCES)\
+   || defined(BOOST_NO_CXX11_SCOPED_ENUMS)\
+   || defined(BOOST_NO_CXX11_SFINAE_EXPR)\
+   || defined(BOOST_NO_CXX11_SMART_PTR)\
+   || defined(BOOST_NO_CXX11_STATIC_ASSERT)\
+   || defined(BOOST_NO_CXX11_STD_ALIGN)\
+   || defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)\
+   || defined(BOOST_NO_CXX11_THREAD_LOCAL)\
+   || defined(BOOST_NO_CXX11_TRAILING_RESULT_TYPES)\
+   || defined(BOOST_NO_CXX11_UNICODE_LITERALS)\
+   || defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX)\
+   || defined(BOOST_NO_CXX11_UNRESTRICTED_UNION)\
+   || defined(BOOST_NO_CXX11_USER_DEFINED_LITERALS)\
+   || defined(BOOST_NO_CXX11_VARIADIC_MACROS)\
+   || defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+#    define BOOST_NO_CXX11
+#endif
+
+#if defined(BOOST_NO_CXX11)\
+   || defined(BOOST_NO_CXX14_AGGREGATE_NSDMI)\
+   || defined(BOOST_NO_CXX14_BINARY_LITERALS)\
+   || defined(BOOST_NO_CXX14_CONSTEXPR)\
+   || defined(BOOST_NO_CXX14_DECLTYPE_AUTO)\
+   || defined(BOOST_NO_CXX14_DIGIT_SEPARATORS)\
+   || defined(BOOST_NO_CXX14_GENERIC_LAMBDAS)\
+   || defined(BOOST_NO_CXX14_HDR_SHARED_MUTEX)\
+   || defined(BOOST_NO_CXX14_INITIALIZED_LAMBDA_CAPTURES)\
+   || defined(BOOST_NO_CXX14_RETURN_TYPE_DEDUCTION)\
+   || defined(BOOST_NO_CXX14_STD_EXCHANGE)\
+   || defined(BOOST_NO_CXX14_VARIABLE_TEMPLATES)
+#    define BOOST_NO_CXX14
+#endif
+
+#if defined(BOOST_NO_CXX14)\
+   || defined(BOOST_NO_CXX17_DEDUCTION_GUIDES)\
+   || defined(BOOST_NO_CXX17_FOLD_EXPRESSIONS)\
+   || defined(BOOST_NO_CXX17_HDR_ANY)\
+   || defined(BOOST_NO_CXX17_HDR_CHARCONV)\
+   || defined(BOOST_NO_CXX17_HDR_EXECUTION)\
+   || defined(BOOST_NO_CXX17_HDR_FILESYSTEM)\
+   || defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)\
+   || defined(BOOST_NO_CXX17_HDR_OPTIONAL)\
+   || defined(BOOST_NO_CXX17_HDR_STRING_VIEW)\
+   || defined(BOOST_NO_CXX17_HDR_VARIANT)\
+   || defined(BOOST_NO_CXX17_IF_CONSTEXPR)\
+   || defined(BOOST_NO_CXX17_INLINE_VARIABLES)\
+   || defined(BOOST_NO_CXX17_ITERATOR_TRAITS)\
+   || defined(BOOST_NO_CXX17_STD_APPLY)\
+   || defined(BOOST_NO_CXX17_STD_INVOKE)\
+   || defined(BOOST_NO_CXX17_STRUCTURED_BINDINGS)
+#    define BOOST_NO_CXX17
+#endif
+
+#if defined(BOOST_NO_CXX17)\
+   || defined(BOOST_NO_CXX20_HDR_BARRIER)\
+   || defined(BOOST_NO_CXX20_HDR_BIT)\
+   || defined(BOOST_NO_CXX20_HDR_COMPARE)\
+   || defined(BOOST_NO_CXX20_HDR_CONCEPTS)\
+   || defined(BOOST_NO_CXX20_HDR_COROUTINE)\
+   || defined(BOOST_NO_CXX20_HDR_FORMAT)\
+   || defined(BOOST_NO_CXX20_HDR_LATCH)\
+   || defined(BOOST_NO_CXX20_HDR_NUMBERS)\
+   || defined(BOOST_NO_CXX20_HDR_RANGES)\
+   || defined(BOOST_NO_CXX20_HDR_SEMAPHORE)\
+   || defined(BOOST_NO_CXX20_HDR_SOURCE_LOCATION)\
+   || defined(BOOST_NO_CXX20_HDR_SPAN)\
+   || defined(BOOST_NO_CXX20_HDR_STOP_TOKEN)\
+   || defined(BOOST_NO_CXX20_HDR_SYNCSTREAM)\
+   || defined(BOOST_NO_CXX20_HDR_VERSION)
+#    define BOOST_NO_CXX20
+#endif
+
+#if defined(BOOST_NO_CXX20)\
+   || defined(BOOST_NO_CXX23_HDR_EXPECTED)\
+   || defined(BOOST_NO_CXX23_HDR_FLAT_MAP)\
+   || defined(BOOST_NO_CXX23_HDR_FLAT_SET)\
+   || defined(BOOST_NO_CXX23_HDR_GENERATOR)\
+   || defined(BOOST_NO_CXX23_HDR_MDSPAN)\
+   || defined(BOOST_NO_CXX23_HDR_PRINT)\
+   || defined(BOOST_NO_CXX23_HDR_SPANSTREAM)\
+   || defined(BOOST_NO_CXX23_HDR_STACKTRACE)\
+   || defined(BOOST_NO_CXX23_HDR_STDFLOAT)
+#    define BOOST_NO_CXX23
+#endif
+

src/boost/config/detail/posix_features.hpp

@@ -0,0 +1,95 @@
+//  (C) Copyright John Maddock 2001 - 2003. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org for most recent version.
+
+// All POSIX feature tests go in this file,
+// Note that we test _POSIX_C_SOURCE and _XOPEN_SOURCE as well
+// _POSIX_VERSION and _XOPEN_VERSION: on some systems POSIX API's
+// may be present but none-functional unless _POSIX_C_SOURCE and
+// _XOPEN_SOURCE have been defined to the right value (it's up
+// to the user to do this *before* including any header, although
+// in most cases the compiler will do this for you).
+
+#  if defined(BOOST_HAS_UNISTD_H)
+#     include <unistd.h>
+
+      // XOpen has <nl_types.h>, but is this the correct version check?
+#     if defined(_XOPEN_VERSION) && (_XOPEN_VERSION >= 3)
+#        define BOOST_HAS_NL_TYPES_H
+#     endif
+
+      // POSIX version 6 requires <stdint.h>
+#     if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 200100)
+#        define BOOST_HAS_STDINT_H
+#     endif
+
+      // POSIX version 2 requires <dirent.h>
+#     if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199009L)
+#        define BOOST_HAS_DIRENT_H
+#     endif
+
+      // POSIX version 3 requires <signal.h> to have sigaction:
+#     if defined(_POSIX_VERSION) && (_POSIX_VERSION >= 199506L)
+#        define BOOST_HAS_SIGACTION
+#     endif
+      // POSIX defines _POSIX_THREADS > 0 for pthread support,
+      // however some platforms define _POSIX_THREADS without
+      // a value, hence the (_POSIX_THREADS+0 >= 0) check.
+      // Strictly speaking this may catch platforms with a
+      // non-functioning stub <pthreads.h>, but such occurrences should
+      // occur very rarely if at all.
+#     if defined(_POSIX_THREADS) && (_POSIX_THREADS+0 >= 0) && !defined(BOOST_HAS_WINTHREADS) && !defined(BOOST_HAS_MPTASKS)
+#        define BOOST_HAS_PTHREADS
+#     endif
+
+      // BOOST_HAS_NANOSLEEP:
+      // This is predicated on _POSIX_TIMERS or _XOPEN_REALTIME:
+#     if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0)) \
+             || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0))
+#        define BOOST_HAS_NANOSLEEP
+#     endif
+
+      // BOOST_HAS_CLOCK_GETTIME:
+      // This is predicated on _POSIX_TIMERS (also on _XOPEN_REALTIME
+      // but at least one platform - linux - defines that flag without
+      // defining clock_gettime):
+#     if (defined(_POSIX_TIMERS) && (_POSIX_TIMERS+0 >= 0))
+#        define BOOST_HAS_CLOCK_GETTIME
+#     endif
+
+      // BOOST_HAS_SCHED_YIELD:
+      // This is predicated on _POSIX_PRIORITY_SCHEDULING or
+      // on _POSIX_THREAD_PRIORITY_SCHEDULING or on _XOPEN_REALTIME.
+#     if defined(_POSIX_PRIORITY_SCHEDULING) && (_POSIX_PRIORITY_SCHEDULING+0 > 0)\
+            || (defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING+0 > 0))\
+            || (defined(_XOPEN_REALTIME) && (_XOPEN_REALTIME+0 >= 0))
+#        define BOOST_HAS_SCHED_YIELD
+#     endif
+
+      // BOOST_HAS_GETTIMEOFDAY:
+      // BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE:
+      // These are predicated on _XOPEN_VERSION, and appears to be first released
+      // in issue 4, version 2 (_XOPEN_VERSION > 500).
+      // Likewise for the functions log1p and expm1.
+#     if defined(_XOPEN_VERSION) && (_XOPEN_VERSION+0 >= 500)
+#        define BOOST_HAS_GETTIMEOFDAY
+#        if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE+0 >= 500)
+#           define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE
+#        endif
+#        ifndef BOOST_HAS_LOG1P
+#           define BOOST_HAS_LOG1P
+#        endif
+#        ifndef BOOST_HAS_EXPM1
+#           define BOOST_HAS_EXPM1
+#        endif
+#     endif
+
+#  endif
+
+
+
+

src/boost/config/detail/select_compiler_config.hpp

@@ -0,0 +1,157 @@
+//  Boost compiler configuration selection header file
+
+//  (C) Copyright John Maddock 2001 - 2003. 
+//  (C) Copyright Martin Wille 2003.
+//  (C) Copyright Guillaume Melquiond 2003.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//  (See accompanying file LICENSE_1_0.txt or copy at
+//   http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/ for most recent version.
+
+// locate which compiler we are using and define
+// BOOST_COMPILER_CONFIG as needed: 
+
+#if defined __CUDACC__
+//  NVIDIA CUDA C++ compiler for GPU
+#   include "boost/config/compiler/nvcc.hpp"
+
+#endif
+
+#if defined(__GCCXML__)
+// GCC-XML emulates other compilers, it has to appear first here!
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/gcc_xml.hpp"
+
+#elif defined(_CRAYC)
+// EDG based Cray compiler:
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/cray.hpp"
+
+#elif defined __COMO__
+//  Comeau C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/comeau.hpp"
+
+#elif defined(__PATHSCALE__) && (__PATHCC__ >= 4)
+// PathScale EKOPath compiler (has to come before clang and gcc)
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/pathscale.hpp"
+
+#elif defined(__INTEL_COMPILER) || defined(__ICL) || defined(__ICC) || defined(__ECC)
+//  Intel
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/intel.hpp"
+
+#elif defined __clang__ && !defined(__ibmxl__) && !defined(__CODEGEARC__)
+//  Clang C++ emulates GCC, so it has to appear early.
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/clang.hpp"
+
+#elif defined __DMC__
+//  Digital Mars C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/digitalmars.hpp"
+
+#elif defined __DCC__
+//  Wind River Diab C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/diab.hpp"
+
+#elif defined(__PGI)
+//  Portland Group Inc.
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/pgi.hpp"
+
+# elif defined(__GNUC__) && !defined(__ibmxl__)
+//  GNU C++:
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/gcc.hpp"
+
+#elif defined __KCC
+//  Kai C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/kai.hpp"
+
+#elif defined __sgi
+//  SGI MIPSpro C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/sgi_mipspro.hpp"
+
+#elif defined __DECCXX
+//  Compaq Tru64 Unix cxx
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/compaq_cxx.hpp"
+
+#elif defined __ghs
+//  Greenhills C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/greenhills.hpp"
+
+#elif defined __CODEGEARC__
+//  CodeGear - must be checked for before Borland
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/codegear.hpp"
+
+#elif defined __BORLANDC__
+//  Borland
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/borland.hpp"
+
+#elif defined  __MWERKS__
+//  Metrowerks CodeWarrior
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/metrowerks.hpp"
+
+#elif defined  __SUNPRO_CC
+//  Sun Workshop Compiler C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/sunpro_cc.hpp"
+
+#elif defined __HP_aCC
+//  HP aCC
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/hp_acc.hpp"
+
+#elif defined(__MRC__) || defined(__SC__)
+//  MPW MrCpp or SCpp
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/mpw.hpp"
+
+#elif defined(__IBMCPP__) && defined(__COMPILER_VER__) && defined(__MVS__)
+//  IBM z/OS XL C/C++
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/xlcpp_zos.hpp"
+
+#elif defined(__ibmxl__)
+//  IBM XL C/C++ for Linux (Little Endian)
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/xlcpp.hpp"
+
+#elif defined(__IBMCPP__)
+//  IBM Visual Age or IBM XL C/C++ for Linux (Big Endian)
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/vacpp.hpp"
+
+#elif defined _MSC_VER
+//  Microsoft Visual C++
+//
+//  Must remain the last #elif since some other vendors (Metrowerks, for
+//  example) also #define _MSC_VER
+#   define BOOST_COMPILER_CONFIG "boost/config/compiler/visualc.hpp"
+
+#elif defined (BOOST_ASSERT_CONFIG)
+// this must come last - generate an error if we don't
+// recognise the compiler:
+#  error "Unknown compiler - please configure (http://www.boost.org/libs/config/config.htm#configuring) and report the results to the main boost mailing list (http://www.boost.org/more/mailing_lists.htm#main)"
+
+#endif
+
+#if 0
+//
+// This section allows dependency scanners to find all the headers we *might* include:
+//
+#include <boost/config/compiler/gcc_xml.hpp>
+#include <boost/config/compiler/cray.hpp>
+#include <boost/config/compiler/comeau.hpp>
+#include <boost/config/compiler/pathscale.hpp>
+#include <boost/config/compiler/intel.hpp>
+#include <boost/config/compiler/clang.hpp>
+#include <boost/config/compiler/digitalmars.hpp>
+#include <boost/config/compiler/gcc.hpp>
+#include <boost/config/compiler/kai.hpp>
+#include <boost/config/compiler/sgi_mipspro.hpp>
+#include <boost/config/compiler/compaq_cxx.hpp>
+#include <boost/config/compiler/greenhills.hpp>
+#include <boost/config/compiler/codegear.hpp>
+#include <boost/config/compiler/borland.hpp>
+#include <boost/config/compiler/metrowerks.hpp>
+#include <boost/config/compiler/sunpro_cc.hpp>
+#include <boost/config/compiler/hp_acc.hpp>
+#include <boost/config/compiler/mpw.hpp>
+#include <boost/config/compiler/xlcpp_zos.hpp>
+#include <boost/config/compiler/xlcpp.hpp>
+#include <boost/config/compiler/vacpp.hpp>
+#include <boost/config/compiler/pgi.hpp>
+#include <boost/config/compiler/visualc.hpp>
+
+#endif
+

src/boost/config/detail/select_platform_config.hpp

@@ -0,0 +1,147 @@
+//  Boost compiler configuration selection header file
+
+//  (C) Copyright John Maddock 2001 - 2002. 
+//  (C) Copyright Jens Maurer 2001. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version.
+
+// locate which platform we are on and define BOOST_PLATFORM_CONFIG as needed.
+// Note that we define the headers to include using "header_name" not
+// <header_name> in order to prevent macro expansion within the header
+// name (for example "linux" is a macro on linux systems).
+
+#if (defined(linux) || defined(__linux) || defined(__linux__) || defined(__GNU__) || defined(__GLIBC__)) && !defined(_CRAYC)
+// linux, also other platforms (Hurd etc) that use GLIBC, should these really have their own config headers though?
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/linux.hpp"
+
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+// BSD:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/bsd.hpp"
+
+#elif defined(sun) || defined(__sun)
+// solaris:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/solaris.hpp"
+
+#elif defined(__sgi)
+// SGI Irix:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/irix.hpp"
+
+#elif defined(__hpux)
+// hp unix:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/hpux.hpp"
+
+#elif defined(__CYGWIN__)
+// cygwin is not win32:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/cygwin.hpp"
+
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+// win32:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/win32.hpp"
+
+#elif defined(__HAIKU__)
+// Haiku
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/haiku.hpp"
+
+#elif defined(__BEOS__)
+// BeOS
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/beos.hpp"
+
+#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
+// MacOS
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/macos.hpp"
+
+#elif defined(__TOS_MVS__)
+// IBM z/OS
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/zos.hpp"
+
+#elif defined(__IBMCPP__) || defined(_AIX)
+// IBM AIX
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/aix.hpp"
+
+#elif defined(__amigaos__)
+// AmigaOS
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/amigaos.hpp"
+
+#elif defined(__QNXNTO__)
+// QNX:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/qnxnto.hpp"
+
+#elif defined(__VXWORKS__)
+// vxWorks:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/vxworks.hpp"
+
+#elif defined(__SYMBIAN32__) 
+// Symbian: 
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/symbian.hpp" 
+
+#elif defined(_CRAYC)
+// Cray:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/cray.hpp" 
+
+#elif defined(__VMS) 
+// VMS:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/vms.hpp" 
+
+#elif defined(__CloudABI__)
+// Nuxi CloudABI:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/cloudabi.hpp"
+
+#elif defined (__wasm__)
+// Web assembly:
+#  define BOOST_PLATFORM_CONFIG "boost/config/platform/wasm.hpp"
+
+#else
+
+#  if defined(unix) \
+      || defined(__unix) \
+      || defined(_XOPEN_SOURCE) \
+      || defined(_POSIX_SOURCE)
+
+   // generic unix platform:
+
+#  ifndef BOOST_HAS_UNISTD_H
+#     define BOOST_HAS_UNISTD_H
+#  endif
+
+#  include <boost/config/detail/posix_features.hpp>
+
+#  endif
+
+#  if defined (BOOST_ASSERT_CONFIG)
+      // this must come last - generate an error if we don't
+      // recognise the platform:
+#     error "Unknown platform - please configure and report the results to boost.org"
+#  endif
+
+#endif
+
+#if 0
+//
+// This section allows dependency scanners to find all the files we *might* include:
+//
+#  include "boost/config/platform/linux.hpp"
+#  include "boost/config/platform/bsd.hpp"
+#  include "boost/config/platform/solaris.hpp"
+#  include "boost/config/platform/irix.hpp"
+#  include "boost/config/platform/hpux.hpp"
+#  include "boost/config/platform/cygwin.hpp"
+#  include "boost/config/platform/win32.hpp"
+#  include "boost/config/platform/beos.hpp"
+#  include "boost/config/platform/macos.hpp"
+#  include "boost/config/platform/zos.hpp"
+#  include "boost/config/platform/aix.hpp"
+#  include "boost/config/platform/amigaos.hpp"
+#  include "boost/config/platform/qnxnto.hpp"
+#  include "boost/config/platform/vxworks.hpp"
+#  include "boost/config/platform/symbian.hpp" 
+#  include "boost/config/platform/cray.hpp" 
+#  include "boost/config/platform/vms.hpp" 
+#  include <boost/config/detail/posix_features.hpp>
+
+
+
+#endif
+

src/boost/config/detail/select_stdlib_config.hpp

@@ -0,0 +1,121 @@
+//  Boost compiler configuration selection header file
+
+//  (C) Copyright John Maddock 2001 - 2003. 
+//  (C) Copyright Jens Maurer 2001 - 2002. 
+//  Use, modification and distribution are subject to the 
+//  Boost Software License, Version 1.0. (See accompanying file 
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+//  See http://www.boost.org for most recent version.
+
+// locate which std lib we are using and define BOOST_STDLIB_CONFIG as needed:
+
+// First, check if __has_include is available and <version> include can be located,
+// otherwise include <cstddef> to determine if some version of STLport is in use as the std lib
+// (do not rely on this header being included since users can short-circuit this header 
+//  if they know whose std lib they are using.)
+#if defined(__cplusplus) && defined(__has_include)
+#  if __has_include(<version>)
+// It should be safe to include `<version>` when it is present without checking
+// the actual C++ language version as it consists solely of macro definitions.
+// [version.syn] p1: The header <version> supplies implementation-dependent
+// information about the C++ standard library (e.g., version number and release date).
+#    include <version>
+#  else
+#    include <cstddef>
+#  endif
+#elif defined(__cplusplus)
+#  include <cstddef>
+#else
+#  include <stddef.h>
+#endif
+
+#if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
+// STLPort library; this _must_ come first, otherwise since
+// STLport typically sits on top of some other library, we
+// can end up detecting that first rather than STLport:
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/stlport.hpp"
+
+#else
+
+// If our std lib was not some version of STLport, and has not otherwise
+// been detected, then include <utility> as it is about 
+// the smallest of the std lib headers that includes real C++ stuff.
+// Some std libs do not include their C++-related macros in <cstddef> 
+// so this additional include makes sure we get those definitions.
+// Note: do not rely on this header being included since users can short-circuit this 
+// #include if they know whose std lib they are using.
+#if !defined(__LIBCOMO__) && !defined(__STD_RWCOMPILER_H__) && !defined(_RWSTD_VER)\
+   && !defined(_LIBCPP_VERSION) && !defined(__GLIBCPP__) && !defined(__GLIBCXX__)\
+   && !defined(__STL_CONFIG_H) && !defined(__MSL_CPP__) && !defined(__IBMCPP__)\
+   && !defined(MSIPL_COMPILE_H) && !defined(_YVALS) && !defined(_CPPLIB_VER)
+#include <utility>
+#endif
+
+#if defined(__LIBCOMO__)
+// Comeau STL:
+#define BOOST_STDLIB_CONFIG "boost/config/stdlib/libcomo.hpp"
+
+#elif defined(__STD_RWCOMPILER_H__) || defined(_RWSTD_VER)
+// Rogue Wave library:
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/roguewave.hpp"
+
+#elif defined(_LIBCPP_VERSION)
+// libc++
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/libcpp.hpp"
+
+#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
+// GNU libstdc++ 3
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/libstdcpp3.hpp"
+
+#elif defined(__STL_CONFIG_H)
+// generic SGI STL
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/sgi.hpp"
+
+#elif defined(__MSL_CPP__)
+// MSL standard lib:
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/msl.hpp"
+
+#elif defined(__IBMCPP__) && defined(__COMPILER_VER__) && defined(__MVS__)
+// IBM z/OS XL C/C++
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/xlcpp_zos.hpp"
+
+#elif defined(__IBMCPP__)
+// take the default VACPP std lib
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/vacpp.hpp"
+
+#elif defined(MSIPL_COMPILE_H)
+// Modena C++ standard library
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/modena.hpp"
+
+#elif (defined(_YVALS) && !defined(__IBMCPP__)) || defined(_CPPLIB_VER)
+// Dinkumware Library (this has to appear after any possible replacement libraries):
+#  define BOOST_STDLIB_CONFIG "boost/config/stdlib/dinkumware.hpp"
+
+#elif defined (BOOST_ASSERT_CONFIG)
+// this must come last - generate an error if we don't
+// recognise the library:
+#  error "Unknown standard library - please configure and report the results to boost.org"
+
+#endif
+
+#endif
+
+#if 0
+//
+// This section allows dependency scanners to find all the files we *might* include:
+//
+#  include "boost/config/stdlib/stlport.hpp"
+#  include "boost/config/stdlib/libcomo.hpp"
+#  include "boost/config/stdlib/roguewave.hpp"
+#  include "boost/config/stdlib/libcpp.hpp"
+#  include "boost/config/stdlib/libstdcpp3.hpp"
+#  include "boost/config/stdlib/sgi.hpp"
+#  include "boost/config/stdlib/msl.hpp"
+#  include "boost/config/stdlib/xlcpp_zos.hpp"
+#  include "boost/config/stdlib/vacpp.hpp"
+#  include "boost/config/stdlib/modena.hpp"
+#  include "boost/config/stdlib/dinkumware.hpp"
+#endif
+

src/boost/config/header_deprecated.hpp

@@ -0,0 +1,26 @@
+#ifndef BOOST_CONFIG_HEADER_DEPRECATED_HPP_INCLUDED
+#define BOOST_CONFIG_HEADER_DEPRECATED_HPP_INCLUDED
+
+//  Copyright 2017 Peter Dimov.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  BOOST_HEADER_DEPRECATED("<alternative>")
+//
+//  Expands to the equivalent of
+//    BOOST_PRAGMA_MESSAGE("This header is deprecated. Use <alternative> instead.")
+//
+//  Note that this header is C compatible.
+
+#include <boost/config/pragma_message.hpp>
+
+#if defined(BOOST_ALLOW_DEPRECATED_HEADERS) || defined(BOOST_ALLOW_DEPRECATED)
+# define BOOST_HEADER_DEPRECATED(a)
+#else
+# define BOOST_HEADER_DEPRECATED(a) BOOST_PRAGMA_MESSAGE("This header is deprecated. Use " a " instead.")
+#endif
+
+#endif // BOOST_CONFIG_HEADER_DEPRECATED_HPP_INCLUDED

src/boost/config/helper_macros.hpp

@@ -0,0 +1,37 @@
+#ifndef BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED
+#define BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED
+
+//  Copyright 2001 John Maddock.
+//  Copyright 2017 Peter Dimov.
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+//  BOOST_STRINGIZE(X)
+//  BOOST_JOIN(X, Y)
+//
+//  Note that this header is C compatible.
+
+//
+// Helper macro BOOST_STRINGIZE:
+// Converts the parameter X to a string after macro replacement
+// on X has been performed.
+//
+#define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X)
+#define BOOST_DO_STRINGIZE(X) #X
+
+//
+// Helper macro BOOST_JOIN:
+// The following piece of macro magic joins the two
+// arguments together, even when one of the arguments is
+// itself a macro (see 16.3.1 in C++ standard).  The key
+// is that macro expansion of macro arguments does not
+// occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN.
+//
+#define BOOST_JOIN(X, Y) BOOST_DO_JOIN(X, Y)
+#define BOOST_DO_JOIN(X, Y) BOOST_DO_JOIN2(X,Y)
+#define BOOST_DO_JOIN2(X, Y) X##Y
+
+#endif // BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED