* acinclude.m4 (GLIBCXX_ENABLE_FILESYSTEM_TS): Disable when <dirent.h>

	is not available.
	(GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for fchmodat.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* configure.ac: Check for utime.h
	* include/experimental/fs_path.h (path::string<>)
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove stray typename keyword.
	* src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H] (DIR, opendir,
	closedir, dirent, readdir_r): Replace dummy functions with #error.
	(native_readdir, _Dir::advance): Use readdir when readdir_r is missing.
	* src/filesystem/ops.cc (do_stat, is_set): Make inline.
	(last_write_time) [!_GLIBCXX_USE_UTIMENSAT]: Use utime.
	(permissions) [!_GLIBCXX_USE_FCHMODAT]: Use chmod.
	(space, temp_directory_path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Set
	error_code.

git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@222703 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 66 insertions, 1 deletions

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 5ecfdebbaaf..90a5192db80 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -78928,7 +78928,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 # For Filesystem TS.
-for ac_header in fcntl.h dirent.h sys/statvfs.h
+for ac_header in fcntl.h dirent.h sys/statvfs.h utime.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -79154,6 +79154,9 @@ fi
 
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build Filesystem TS support" >&5
 $as_echo_n "checking whether to build Filesystem TS support... " >&6; }
+  if test x"$ac_cv_header_dirent_h" != x"yes"; then
+    enable_libstdcxx_filesystem_ts=no
+  fi
   if test x"$enable_libstdcxx_filesystem_ts" = x"auto"; then
     case "${target_os}" in
       freebsd*|netbsd*|openbsd*|dragonfly*|darwin*)
@@ -79369,6 +79372,68 @@ $as_echo "#define _GLIBCXX_USE_ST_MTIM 1" >>confdefs.h
   fi
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_st_mtim" >&5
 $as_echo "$glibcxx_cv_st_mtim" >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fchmodat" >&5
+$as_echo_n "checking for fchmodat... " >&6; }
+  if test "${glibcxx_cv_fchmodat+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+      if test x$gcc_no_link = xyes; then
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+        #include <fcntl.h>
+        #include <sys/stat.h>
+
+int
+main ()
+{
+fchmodat(AT_FDCWD, "", 0, AT_SYMLINK_NOFOLLOW);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  glibcxx_cv_fchmodat=yes
+else
+  glibcxx_cv_fchmodat=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+else
+  if test x$gcc_no_link = xyes; then
+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
+fi
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+        #include <fcntl.h>
+        #include <sys/stat.h>
+
+int
+main ()
+{
+fchmodat(AT_FDCWD, "", 0, AT_SYMLINK_NOFOLLOW);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_cxx_try_link "$LINENO"; then :
+  glibcxx_cv_fchmodat=yes
+else
+  glibcxx_cv_fchmodat=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+
+fi
+
+  if test $glibcxx_cv_fchmodat = yes; then
+
+$as_echo "#define _GLIBCXX_USE_FCHMODAT 1" >>confdefs.h
+
+  fi
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_fchmodat" >&5
+$as_echo "$glibcxx_cv_fchmodat" >&6; }
   CXXFLAGS="$ac_save_CXXFLAGS"
   ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'