Commit | Line | Data |
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8912421c LC |
1 | # canonicalize.m4 serial 16 |
2 | ||
61cd9dc9 | 3 | dnl Copyright (C) 2003-2007, 2009-2010 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 | [ | |
13 | AC_LIBOBJ([canonicalize]) | |
14 | ||
15 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) | |
16 | AC_CHECK_FUNCS_ONCE([canonicalize_file_name]) | |
17 | AC_REQUIRE([gl_DOUBLE_SLASH_ROOT]) | |
18 | AC_REQUIRE([gl_FUNC_REALPATH_WORKS]) | |
19 | if test $ac_cv_func_canonicalize_file_name = no; then | |
20 | HAVE_CANONICALIZE_FILE_NAME=0 | |
21 | elif test "$gl_cv_func_realpath_works" != yes; then | |
22 | REPLACE_CANONICALIZE_FILE_NAME=1 | |
23 | fi | |
24 | ]) | |
25 | ||
26 | # Provides canonicalize_file_name and realpath. | |
27 | AC_DEFUN([gl_CANONICALIZE_LGPL], | |
28 | [ | |
29 | AC_REQUIRE([gl_CANONICALIZE_LGPL_SEPARATE]) | |
30 | if test $ac_cv_func_canonicalize_file_name = no; then | |
31 | HAVE_CANONICALIZE_FILE_NAME=0 | |
32 | AC_LIBOBJ([canonicalize-lgpl]) | |
33 | if test $ac_cv_func_realpath = no; then | |
34 | HAVE_REALPATH=0 | |
35 | elif test "$gl_cv_func_realpath_works" != yes; then | |
36 | REPLACE_REALPATH=1 | |
37 | fi | |
38 | elif test "$gl_cv_func_realpath_works" != yes; then | |
39 | AC_LIBOBJ([canonicalize-lgpl]) | |
40 | REPLACE_REALPATH=1 | |
41 | REPLACE_CANONICALIZE_FILE_NAME=1 | |
42 | fi | |
43 | ]) | |
44 | ||
45 | # Like gl_CANONICALIZE_LGPL, except prepare for separate compilation | |
46 | # (no AC_LIBOBJ). | |
47 | AC_DEFUN([gl_CANONICALIZE_LGPL_SEPARATE], | |
48 | [ | |
49 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) | |
50 | AC_CHECK_FUNCS_ONCE([canonicalize_file_name getcwd readlink]) | |
51 | AC_REQUIRE([gl_DOUBLE_SLASH_ROOT]) | |
52 | AC_REQUIRE([gl_FUNC_REALPATH_WORKS]) | |
53 | AC_CHECK_HEADERS_ONCE([sys/param.h]) | |
54 | ]) | |
55 | ||
56 | # Check whether realpath works. Assume that if a platform has both | |
57 | # realpath and canonicalize_file_name, but the former is broken, then | |
58 | # so is the latter. | |
59 | AC_DEFUN([gl_FUNC_REALPATH_WORKS], | |
60 | [ | |
61 | AC_CHECK_FUNCS_ONCE([realpath]) | |
62 | AC_CACHE_CHECK([whether realpath works], [gl_cv_func_realpath_works], [ | |
63 | touch conftest.a | |
64 | AC_RUN_IFELSE([ | |
65 | AC_LANG_PROGRAM([[ | |
66 | #include <stdlib.h> | |
67 | ]], [[ | |
68 | char *name1 = realpath ("conftest.a", NULL); | |
69 | char *name2 = realpath ("conftest.b/../conftest.a", NULL); | |
70 | char *name3 = realpath ("conftest.a/", NULL); | |
71 | return !(name1 && *name1 == '/' && !name2 && !name3); | |
72 | ]]) | |
73 | ], [gl_cv_func_realpath_works=yes], [gl_cv_func_realpath_works=no], | |
74 | [gl_cv_func_realpath_works="guessing no"]) | |
75 | ]) | |
76 | if test "$gl_cv_func_realpath_works" = yes; then | |
77 | AC_DEFINE([FUNC_REALPATH_WORKS], [1], [Define to 1 if realpath() | |
78 | can malloc memory, always gives an absolute path, and handles | |
79 | trailing slash correctly.]) | |
80 | fi | |
81 | ]) |