Commit | Line | Data |
---|---|---|
7ae4e75a | 1 | # canonicalize.m4 serial 26 |
8912421c | 2 | |
af07e104 | 3 | dnl Copyright (C) 2003-2007, 2009-2013 Free Software Foundation, Inc. |
8912421c LC |
4 | |
5 | dnl This file is free software; the Free Software Foundation | |
6 | dnl gives unlimited permission to copy and/or distribute it, | |
7 | dnl with or without modifications, as long as this notice is preserved. | |
8 | ||
9 | # Provides canonicalize_file_name and canonicalize_filename_mode, but does | |
10 | # not provide or fix realpath. | |
11 | AC_DEFUN([gl_FUNC_CANONICALIZE_FILENAME_MODE], | |
12 | [ | |
8912421c LC |
13 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) |
14 | AC_CHECK_FUNCS_ONCE([canonicalize_file_name]) | |
15 | AC_REQUIRE([gl_DOUBLE_SLASH_ROOT]) | |
16 | AC_REQUIRE([gl_FUNC_REALPATH_WORKS]) | |
17 | if test $ac_cv_func_canonicalize_file_name = no; then | |
18 | HAVE_CANONICALIZE_FILE_NAME=0 | |
015b7087 LC |
19 | else |
20 | case "$gl_cv_func_realpath_works" in | |
21 | *yes) ;; | |
22 | *) REPLACE_CANONICALIZE_FILE_NAME=1 ;; | |
23 | esac | |
8912421c LC |
24 | fi |
25 | ]) | |
26 | ||
27 | # Provides canonicalize_file_name and realpath. | |
28 | AC_DEFUN([gl_CANONICALIZE_LGPL], | |
29 | [ | |
3d458a81 | 30 | AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) |
8912421c LC |
31 | AC_REQUIRE([gl_CANONICALIZE_LGPL_SEPARATE]) |
32 | if test $ac_cv_func_canonicalize_file_name = no; then | |
33 | HAVE_CANONICALIZE_FILE_NAME=0 | |
8912421c LC |
34 | if test $ac_cv_func_realpath = no; then |
35 | HAVE_REALPATH=0 | |
015b7087 LC |
36 | else |
37 | case "$gl_cv_func_realpath_works" in | |
38 | *yes) ;; | |
39 | *) REPLACE_REALPATH=1 ;; | |
40 | esac | |
8912421c | 41 | fi |
015b7087 LC |
42 | else |
43 | case "$gl_cv_func_realpath_works" in | |
44 | *yes) | |
45 | ;; | |
46 | *) | |
47 | REPLACE_CANONICALIZE_FILE_NAME=1 | |
48 | REPLACE_REALPATH=1 | |
49 | ;; | |
50 | esac | |
8912421c LC |
51 | fi |
52 | ]) | |
53 | ||
54 | # Like gl_CANONICALIZE_LGPL, except prepare for separate compilation | |
3d458a81 | 55 | # (no REPLACE_CANONICALIZE_FILE_NAME, no REPLACE_REALPATH, no AC_LIBOBJ). |
8912421c LC |
56 | AC_DEFUN([gl_CANONICALIZE_LGPL_SEPARATE], |
57 | [ | |
58 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) | |
59 | AC_CHECK_FUNCS_ONCE([canonicalize_file_name getcwd readlink]) | |
60 | AC_REQUIRE([gl_DOUBLE_SLASH_ROOT]) | |
61 | AC_REQUIRE([gl_FUNC_REALPATH_WORKS]) | |
62 | AC_CHECK_HEADERS_ONCE([sys/param.h]) | |
63 | ]) | |
64 | ||
65 | # Check whether realpath works. Assume that if a platform has both | |
66 | # realpath and canonicalize_file_name, but the former is broken, then | |
67 | # so is the latter. | |
68 | AC_DEFUN([gl_FUNC_REALPATH_WORKS], | |
69 | [ | |
70 | AC_CHECK_FUNCS_ONCE([realpath]) | |
005de2e8 | 71 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles |
8912421c LC |
72 | AC_CACHE_CHECK([whether realpath works], [gl_cv_func_realpath_works], [ |
73 | touch conftest.a | |
3d458a81 | 74 | mkdir conftest.d |
8912421c LC |
75 | AC_RUN_IFELSE([ |
76 | AC_LANG_PROGRAM([[ | |
3d458a81 | 77 | ]GL_NOCRASH[ |
8912421c | 78 | #include <stdlib.h> |
3d458a81 | 79 | #include <string.h> |
8912421c | 80 | ]], [[ |
0f00f2c3 LC |
81 | int result = 0; |
82 | { | |
83 | char *name = realpath ("conftest.a", NULL); | |
84 | if (!(name && *name == '/')) | |
85 | result |= 1; | |
86 | } | |
87 | { | |
88 | char *name = realpath ("conftest.b/../conftest.a", NULL); | |
89 | if (name != NULL) | |
90 | result |= 2; | |
91 | } | |
92 | { | |
93 | char *name = realpath ("conftest.a/", NULL); | |
94 | if (name != NULL) | |
95 | result |= 4; | |
96 | } | |
3d458a81 AW |
97 | { |
98 | char *name1 = realpath (".", NULL); | |
99 | char *name2 = realpath ("conftest.d//./..", NULL); | |
100 | if (strcmp (name1, name2) != 0) | |
101 | result |= 8; | |
102 | } | |
0f00f2c3 | 103 | return result; |
8912421c | 104 | ]]) |
005de2e8 LC |
105 | ], |
106 | [gl_cv_func_realpath_works=yes], | |
107 | [gl_cv_func_realpath_works=no], | |
108 | [case "$host_os" in | |
7ae4e75a LC |
109 | # Guess yes on glibc systems. |
110 | *-gnu* | gnu*) gl_cv_func_realpath_works="guessing yes" ;; | |
111 | # If we don't know, assume the worst. | |
112 | *) gl_cv_func_realpath_works="guessing no" ;; | |
005de2e8 LC |
113 | esac |
114 | ]) | |
3d458a81 | 115 | rm -rf conftest.a conftest.d |
8912421c | 116 | ]) |
005de2e8 LC |
117 | case "$gl_cv_func_realpath_works" in |
118 | *yes) | |
119 | AC_DEFINE([FUNC_REALPATH_WORKS], [1], [Define to 1 if realpath() | |
120 | can malloc memory, always gives an absolute path, and handles | |
121 | trailing slash correctly.]) | |
122 | ;; | |
123 | esac | |
8912421c | 124 | ]) |