Files
Antonio SJ Musumeci dfe053a0ae Require C++20-capable build toolchains
Important changes:
- Switch mergerfs and vendored libfuse Makefiles to -std=c++20.
- Select the latest available GCC/G++ or toolset in container builds.
- Verify compiler C++20 support during package installation.
- Fix dynamic SysLog formatting for fmt C++20 checks.
2026-05-13 13:55:43 -05:00

190 lines
4.6 KiB
Makefile

# Copyright (c) 2025, 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.
$(info libfuse MAKEFLAGS: $(MAKEFLAGS))
AR ?= ar
CHMOD ?= chmod
CHOWN ?= chown
INSTALL ?= install
MKDIR ?= mkdir
RM ?= rm
STRIP ?= strip
TOUCH ?= touch
OS := $(shell uname -s)
ifeq ($(OS),Linux)
UTILS := utils
INSTALLUTILS := install-utils
else
UTILS :=
INSTALLUTILS :=
endif
ifdef SANITIZE
ifeq ($(SANITIZE),1)
override SANITIZE := -fsanitize=address,undefined,leak
else ifeq ($(filter -fsanitize=%,$(SANITIZE)),)
override SANITIZE := -fsanitize=$(SANITIZE)
endif
endif
COMMON_OPT_FLAGS += \
-fstack-protector-strong \
-Wextra \
-Wno-unused-parameter
DEBUG_OPT_FLAGS += \
-O0 \
-g3 \
-fno-omit-frame-pointer \
$(SANITIZE)
ifdef RELEASE
OPT_FLAGS := -O3 $(COMMON_OPT_FLAGS)
else
OPT_FLAGS ?= $(DEBUG_OPT_FLAGS) $(COMMON_OPT_FLAGS)
endif
ifeq ($(LTO),1)
LTO_FLAGS := -flto
else
LTO_FLAGS :=
endif
# https://www.gnu.org/prep/standards/html_node/Directory-Variables.html
DESTDIR ?=
PREFIX ?= /usr/local
EXEC_PREFIX ?= $(PREFIX)
DATAROOTDIR ?= $(PREFIX)/share
DATADIR ?= $(DATAROOTDIR)
BINDIR ?= $(EXEC_PREFIX)/bin
SBINDIR ?= /sbin
MANDIR ?= $(DATAROOTDIR)/man
MAN1DIR ?= $(MANDIR)/man1
INSTALLBINDIR ?= $(DESTDIR)$(BINDIR)
INSTALLSBINDIR ?= $(DESTDIR)$(SBINDIR)
INSTALLMAN1DIR ?= $(DESTDIR)$(MAN1DIR)
BUILDDIR := build
SRC_C =
SRC_CXX = $(wildcard lib/*.cpp)
OBJS := $(SRC_C:lib/%.c=$(BUILDDIR)/.objs/%.c.o)
OBJS += $(SRC_CXX:lib/%.cpp=$(BUILDDIR)/.objs/%.cpp.o)
DEPS := $(SRC_C:lib/%.c=$(BUILDDIR)/.objs/%.c.d)
DEPS += $(SRC_CXX:lib/%.cpp=$(BUILDDIR)/.objs/%.cpp.d)
ifdef STATIC
STATIC_FLAGS := -static
else
STATIC_FLAGS :=
endif
CPPFLAGS ?= \
-D_FILE_OFFSET_BITS=64 \
-DBOOST_UNORDERED_DISABLE_PARALLEL_ALGORITHMS
CFLAGS ?= \
$(OPT_FLAGS) \
$(LTO_FLAGS) \
$(STATIC_FLAGS) \
-Wall \
-pipe
override CFLAGS += \
-std=gnu99 \
-MMD \
-MP
CXXFLAGS ?= \
$(OPT_FLAGS) \
$(LTO_FLAGS) \
$(STATIC_FLAGS) \
-Wall \
-pipe
override CXXFLAGS += \
-std=c++20 \
-MMD \
-MP
FUSERMOUNT_DIR := $(BINDIR)
FUSE_FLAGS := \
-Iinclude \
-I.. \
-I$(BUILDDIR) \
-D_REENTRANT \
-D_FILE_OFFSET_BITS=64 \
-DFUSERMOUNT_DIR=\"$(FUSERMOUNT_DIR)\"
LDFLAGS ?=
LDLIBS := \
-lrt \
-latomic \
-pthread
all: $(BUILDDIR)/libfuse.a $(UTILS)
$(BUILDDIR)/stamp:
$(MKDIR) -p $(BUILDDIR)/.objs/
$(TOUCH) $@
$(BUILDDIR)/libfuse.a: $(OBJS) | $(BUILDDIR)/stamp
$(AR) rcs $(BUILDDIR)/libfuse.a $(OBJS)
.PHONY: utils
utils: mergerfs-fusermount mount.mergerfs
$(BUILDDIR)/mergerfs-fusermount: util/fusermount.cpp | $(BUILDDIR)/stamp
$(CXX) $(CXXFLAGS) $(FUSE_FLAGS) -Ilib -o $(BUILDDIR)/mergerfs-fusermount util/fusermount.cpp
mergerfs-fusermount: $(BUILDDIR)/mergerfs-fusermount
$(BUILDDIR)/mount.mergerfs: $(BUILDDIR)/libfuse.a util/mount.mergerfs.cpp
echo STATIC=$(STATIC) $(STATIC_FLAGS)
$(CXX) $(CXXFLAGS) $(FUSE_FLAGS) -o $(BUILDDIR)/mount.mergerfs util/mount.mergerfs.cpp $(BUILDDIR)/libfuse.a $(LDFLAGS)
mount.mergerfs: $(BUILDDIR)/mount.mergerfs
$(BUILDDIR)/.objs/%.c.o: lib/%.c | $(BUILDDIR)/stamp
$(CC) $(CFLAGS) $(CPPFLAGS) $(FUSE_FLAGS) -c $< -o $@
$(BUILDDIR)/.objs/%.cpp.o: lib/%.cpp | $(BUILDDIR)/stamp
$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(FUSE_FLAGS) -c $< -o $@
.PHONY: clean
clean:
$(RM) -rf $(BUILDDIR)
.PHONY: distclean
distclean: clean
.PHONY: strip
strip:
$(STRIP) --strip-all $(BUILDDIR)/mount.mergerfs
$(STRIP) --strip-all $(BUILDDIR)/mergerfs-fusermount
install-utils: mergerfs-fusermount mount.mergerfs strip
$(INSTALL) -D $(BUILDDIR)/mergerfs-fusermount "$(INSTALLBINDIR)/mergerfs-fusermount"
$(INSTALL) -D $(BUILDDIR)/mount.mergerfs "$(INSTALLSBINDIR)/mount.mergerfs"
$(CHOWN) root:root "$(INSTALLBINDIR)/mergerfs-fusermount"
$(CHMOD) u+s "$(INSTALLBINDIR)/mergerfs-fusermount"
install: $(INSTALLUTILS)
.PHONY: release
release:
$(MAKE) RELEASE=1 NDEBUG=1 CPPFLAGS="$(CPPFLAGS) -DNDEBUG" all
.PHONY: objects strip utils install install-utils
-include $(DEPS)