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1# serial 18
2
3# Copyright (C) 2009-2023 Free Software Foundation, Inc.
4#
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.
8
9AC_DEFUN([gl_FUNC_STAT],
10[
11 AC_REQUIRE([AC_CANONICAL_HOST])
12 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
13 AC_CHECK_FUNCS_ONCE([lstat])
14 case "$host_os" in
15 mingw*)
16 dnl On this platform, the original stat() returns st_atime, st_mtime,
17 dnl st_ctime values that are affected by the time zone.
18 REPLACE_STAT=1
19 ;;
20 *)
21 dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
22 dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
23 dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
24 AC_CACHE_CHECK([whether stat handles trailing slashes on files],
25 [gl_cv_func_stat_file_slash],
26 [touch conftest.tmp
27 # Assume that if we have lstat, we can also check symlinks.
28 if test $ac_cv_func_lstat = yes; then
29 ln -s conftest.tmp conftest.lnk
30 fi
31 AC_RUN_IFELSE(
32 [AC_LANG_PROGRAM(
33 [[#include <sys/stat.h>
34]], [[int result = 0;
35 struct stat st;
36 if (!stat ("conftest.tmp/", &st))
37 result |= 1;
38#if HAVE_LSTAT
39 if (!stat ("conftest.lnk/", &st))
40 result |= 2;
41#endif
42 return result;
43 ]])],
44 [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
45 [case "$host_os" in
46 # Guess yes on Linux systems.
47 linux-* | linux) gl_cv_func_stat_file_slash="guessing yes" ;;
48 # Guess yes on glibc systems.
49 *-gnu* | gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;
50 # If we don't know, obey --enable-cross-guesses.
51 *) gl_cv_func_stat_file_slash="$gl_cross_guess_normal" ;;
52 esac
53 ])
54 rm -f conftest.tmp conftest.lnk])
55 case $gl_cv_func_stat_file_slash in
56 *no)
57 REPLACE_STAT=1
58 AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
59 help when passed a file name with a trailing slash]);;
60 esac
61 case $host_os in
62 dnl Solaris stat can return a negative tv_nsec.
63 solaris*)
64 REPLACE_FSTAT=1 ;;
65 esac
66 ;;
67 esac
68])
69
70# Prerequisites of lib/stat.c and lib/stat-w32.c.
71AC_DEFUN([gl_PREREQ_STAT], [
72 AC_REQUIRE([gl_SYS_STAT_H])
73 AC_REQUIRE([gl_PREREQ_STAT_W32])
74 :
75])
76
77# Prerequisites of lib/stat-w32.c.
78AC_DEFUN([gl_PREREQ_STAT_W32], [
79 AC_REQUIRE([AC_CANONICAL_HOST])
80 case "$host_os" in
81 mingw*)
82 AC_CHECK_HEADERS([sdkddkver.h])
83 ;;
84 esac
85])