hide fs::fadvise as it's not used directly

src/fs_base_fadvise.cpp

@@ -22,6 +22,30 @@
 # include "fs_base_fadvise_unsupported.icpp"
 #endif
 
+#ifndef POSIX_FADV_NORMAL
+# define POSIX_FADV_NORMAL 0
+#endif
+
+#ifndef POSIX_FADV_RANDOM
+# define POSIX_FADV_RANDOM 1
+#endif
+
+#ifndef POSIX_FADV_SEQUENTIAL
+# define POSIX_FADV_SEQUENTIAL 2
+#endif
+
+#ifndef POSIX_FADV_WILLNEED
+# define POSIX_FADV_WILLNEED 3
+#endif
+
+#ifndef POSIX_FADV_DONTNEED
+# define POSIX_FADV_DONTNEED 4
+#endif
+
+#ifndef POSIX_FADV_NOREUSE
+# define POSIX_FADV_NOREUSE 5
+#endif
+
 namespace fs
 {
   int

src/fs_base_fadvise.hpp

@@ -14,41 +14,11 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
-#ifndef __FS_FADVISE_HPP__
-#define __FS_FADVISE_HPP__
-
-#ifndef POSIX_FADV_NORMAL
-# define POSIX_FADV_NORMAL 0
-#endif
-
-#ifndef POSIX_FADV_RANDOM
-# define POSIX_FADV_RANDOM 1
-#endif
-
-#ifndef POSIX_FADV_SEQUENTIAL
-# define POSIX_FADV_SEQUENTIAL 2
-#endif
-
-#ifndef POSIX_FADV_WILLNEED
-# define POSIX_FADV_WILLNEED 3
-#endif
-
-#ifndef POSIX_FADV_DONTNEED
-# define POSIX_FADV_DONTNEED 4
-#endif
-
-#ifndef POSIX_FADV_NOREUSE
-# define POSIX_FADV_NOREUSE 5
-#endif
+#ifndef __FS_BASE_FADVISE_HPP__
+#define __FS_BASE_FADVISE_HPP__
 
 namespace fs
 {
-  int
-  fadvise(const int   fd,
-          const off_t offset,
-          const off_t len,
-          const int   advice);
-
   int
   fadvise_dontneed(const int   fd,
                    const off_t offset = 0,

src/fs_base_fadvise_posix.icpp

@@ -20,6 +20,7 @@
 
 namespace fs
 {
+  static
   int
   fadvise(const int   fd,
           const off_t offset,

src/fs_base_fadvise_unsupported.icpp

@@ -18,6 +18,7 @@
 
 namespace fs
 {
+  static
   int
   fadvise(const int   fd,
           const off_t offset,