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2196f55f YQ |
1 | # serial 11 |
2 | ||
49e4877c | 3 | # Copyright (C) 2009-2016 Free Software Foundation, Inc. |
2196f55f YQ |
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]) 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], | |
17 | [AC_RUN_IFELSE( | |
18 | [AC_LANG_PROGRAM( | |
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], | |
22 | [case $host_os in | |
23 | mingw*) gl_cv_func_stat_dir_slash="guessing no";; | |
24 | *) gl_cv_func_stat_dir_slash="guessing yes";; | |
25 | esac])]) | |
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], | |
31 | [touch conftest.tmp | |
32 | # Assume that if we have lstat, we can also check symlinks. | |
33 | if test $ac_cv_func_lstat = yes; then | |
34 | ln -s conftest.tmp conftest.lnk | |
35 | fi | |
36 | AC_RUN_IFELSE( | |
37 | [AC_LANG_PROGRAM( | |
38 | [[#include <sys/stat.h> | |
39 | ]], [[int result = 0; | |
40 | struct stat st; | |
41 | if (!stat ("conftest.tmp/", &st)) | |
42 | result |= 1; | |
43 | #if HAVE_LSTAT | |
44 | if (!stat ("conftest.lnk/", &st)) | |
45 | result |= 2; | |
46 | #endif | |
47 | return result; | |
48 | ]])], | |
49 | [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no], | |
50 | [case "$host_os" in | |
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" ;; | |
55 | esac | |
56 | ]) | |
57 | rm -f conftest.tmp conftest.lnk]) | |
58 | case $gl_cv_func_stat_dir_slash in | |
59 | *no) REPLACE_STAT=1 | |
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]);; | |
62 | esac | |
63 | case $gl_cv_func_stat_file_slash in | |
64 | *no) REPLACE_STAT=1 | |
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]);; | |
67 | esac | |
68 | ]) | |
69 | ||
70 | # Prerequisites of lib/stat.c. | |
71 | AC_DEFUN([gl_PREREQ_STAT], [:]) |