1: # serial 15
2:
3: # Copyright (C) 2009-2019 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:
9: AC_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, assume the worst.
51: *) gl_cv_func_stat_file_slash="guessing no" ;;
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.
71: AC_DEFUN([gl_PREREQ_STAT], [
72: AC_REQUIRE([gl_HEADER_SYS_STAT_H])
73: :
74: ])
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