3 # Copyright (C) 2009-2012 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 AC_DEFUN([gl_FUNC_STAT],
11 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
12 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
13 AC_CHECK_FUNCS_ONCE([lstat])
14 dnl mingw is the only known platform where stat(".") and stat("./") differ
15 AC_CACHE_CHECK([whether stat handles trailing slashes on directories],
16 [gl_cv_func_stat_dir_slash],
19 [[#include <sys/stat.h>
20 ]], [[struct stat st; return stat (".", &st) != stat ("./", &st);]])],
21 [gl_cv_func_stat_dir_slash=yes], [gl_cv_func_stat_dir_slash=no],
23 mingw*) gl_cv_func_stat_dir_slash="guessing no";;
24 *) gl_cv_func_stat_dir_slash="guessing yes";;
26 dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
27 dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
28 dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
29 AC_CACHE_CHECK([whether stat handles trailing slashes on files],
30 [gl_cv_func_stat_file_slash],
32 # Assume that if we have lstat, we can also check symlinks.
33 if test $ac_cv_func_lstat = yes; then
34 ln -s conftest.tmp conftest.lnk
38 [[#include <sys/stat.h>
41 if (!stat ("conftest.tmp/", &st))
44 if (!stat ("conftest.lnk/", &st))
49 [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
51 # Guess yes on glibc systems.
52 *-gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;
53 # If we don't know, assume the worst.
54 *) gl_cv_func_stat_file_slash="guessing no" ;;
57 rm -f conftest.tmp conftest.lnk])
58 case $gl_cv_func_stat_dir_slash in
60 AC_DEFINE([REPLACE_FUNC_STAT_DIR], [1], [Define to 1 if stat needs
61 help when passed a directory name with a trailing slash]);;
63 case $gl_cv_func_stat_file_slash in
65 AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
66 help when passed a file name with a trailing slash]);;
70 # Prerequisites of lib/stat.c.
71 AC_DEFUN([gl_PREREQ_STAT], [:])