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# stat.m4
# serial 21
dnl Copyright (C) 2009-2024 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_STAT],
[
AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([lstat])
case "$host_os" in
mingw* | windows*)
dnl On this platform, the original stat() returns st_atime, st_mtime,
dnl st_ctime values that are affected by the time zone.
REPLACE_STAT=1
;;
*)
dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
AC_CACHE_CHECK([whether stat handles trailing slashes on files],
[gl_cv_func_stat_file_slash],
[touch conftest.tmp
# Assume that if we have lstat, we can also check symlinks.
if test $ac_cv_func_lstat = yes; then
ln -s conftest.tmp conftest.lnk
fi
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <sys/stat.h>
]], [[int result = 0;
struct stat st;
if (!stat ("conftest.tmp/", &st))
result |= 1;
#if HAVE_LSTAT
if (!stat ("conftest.lnk/", &st))
result |= 2;
#endif
return result;
]])],
[gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
[case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_stat_file_slash="guessing yes" ;;
# Guess yes on systems that emulate the Linux system calls.
midipix*) gl_cv_func_stat_file_slash="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu* | gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_stat_file_slash="$gl_cross_guess_normal" ;;
esac
])
rm -f conftest.tmp conftest.lnk])
case $gl_cv_func_stat_file_slash in
*no)
REPLACE_STAT=1
AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
help when passed a file name with a trailing slash]);;
esac
case $host_os in
dnl macOS and Solaris stat can return a negative tv_nsec.
darwin* | solaris*)
REPLACE_FSTAT=1 ;;
esac
;;
esac
])
# Prerequisites of lib/stat.c and lib/stat-w32.c.
AC_DEFUN([gl_PREREQ_STAT], [
AC_REQUIRE([gl_SYS_STAT_H])
AC_REQUIRE([gl_PREREQ_STAT_W32])
:
])
# Prerequisites of lib/stat-w32.c.
AC_DEFUN([gl_PREREQ_STAT_W32], [
AC_REQUIRE([AC_CANONICAL_HOST])
case "$host_os" in
mingw* | windows*)
AC_CHECK_HEADERS([sdkddkver.h])
;;
esac
])
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