1# serial 16
2
3# Copyright (C) 2009-2020 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_HEADER_SYS_STAT_H])
73  :
74])
75