1 # Check for fnmatch - serial 4.
3 # Copyright (C) 2000-2007, 2009-2010 Free Software Foundation, Inc.
4 # This file is free software; the Free Software Foundation
5 # gives unlimited permission to copy and/or distribute it,
6 # with or without modifications, as long as this notice is preserved.
8 # Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.
9 # New applications should use the macros below instead.
11 # Request a POSIX compliant fnmatch function.
12 AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
14 m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX])
16 dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
17 dnl This is only needed if gl_fnmatch_required = GNU. It would be possible
18 dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting
19 dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file.
20 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
23 gl_fnmatch_required_lowercase=`echo $gl_fnmatch_required | tr 'A-Z' 'a-z'`
24 gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
25 AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],
26 [$gl_fnmatch_cache_var],
27 [dnl Some versions of Solaris, SCO, and the GNU C Library
28 dnl have a broken or incompatible fnmatch.
29 dnl So we run a test program. If we are cross-compiling, take no chance.
30 dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this
32 if test $gl_fnmatch_required = GNU; then
36 gl_fnmatch_gnu_start='#if 0'
37 gl_fnmatch_gnu_end='#endif'
41 [[#include <fnmatch.h>
43 y (char const *pattern, char const *string, int flags)
45 return fnmatch (pattern, string, flags) == 0;
48 n (char const *pattern, char const *string, int flags)
50 return fnmatch (pattern, string, flags) == FNM_NOMATCH;
53 [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
54 char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
55 static char const A_1[] = { 'A' - 1, 0 };
56 static char const A01[] = { 'A' + 1, 0 };
57 static char const a_1[] = { 'a' - 1, 0 };
58 static char const a01[] = { 'a' + 1, 0 };
59 static char const bs_1[] = { '\\\\' - 1, 0 };
60 static char const bs01[] = { '\\\\' + 1, 0 };
64 && n ("d*/*1", "d/s/1", FNM_PATHNAME)
65 && y ("a\\\\bc", "abc", 0)
66 && n ("a\\\\bc", "abc", FNM_NOESCAPE)
68 && n ("*x", ".x", FNM_PERIOD)
69 && y (Apat, "\\\\", 0) && y (Apat, "A", 0)
70 && y (apat, "\\\\", 0) && y (apat, "a", 0)
71 && n (Apat, A_1, 0) == ('A' < '\\\\')
72 && n (apat, a_1, 0) == ('a' < '\\\\')
73 && y (Apat, A01, 0) == ('A' < '\\\\')
74 && y (apat, a01, 0) == ('a' < '\\\\')
75 && y (Apat, bs_1, 0) == ('A' < '\\\\')
76 && y (apat, bs_1, 0) == ('a' < '\\\\')
77 && n (Apat, bs01, 0) == ('A' < '\\\\')
78 && n (apat, bs01, 0) == ('a' < '\\\\')
80 && y ("xxXX", "xXxX", FNM_CASEFOLD)
81 && y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
82 && n ("d*/*1", "d/s/1", FNM_FILE_NAME)
83 && y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
84 && y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
85 && y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)
89 [eval "$gl_fnmatch_cache_var=yes"],
90 [eval "$gl_fnmatch_cache_var=no"],
91 [eval "$gl_fnmatch_cache_var=\"guessing no\""])
93 eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
94 if test "$gl_fnmatch_result" = yes; then
95 dnl Not strictly necessary. Only to avoid spurious leftover files if people
96 dnl don't do "make distclean".
97 rm -f "$gl_source_base/fnmatch.h"
101 dnl We must choose a different name for our function, since on ELF systems
102 dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
103 dnl compiled into a shared library.
104 AC_DEFINE_UNQUOTED([fnmatch], [${gl_fnmatch_required_lowercase}_fnmatch],
105 [Define to a replacement function name for fnmatch().])
106 dnl Prerequisites of lib/fnmatch.c.
107 AC_REQUIRE([AC_TYPE_MBSTATE_T])
108 AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
109 AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
110 AC_CHECK_HEADERS_ONCE([wctype.h])
112 AC_SUBST([FNMATCH_H])
115 # Request a POSIX compliant fnmatch function with GNU extensions.
116 AC_DEFUN([gl_FUNC_FNMATCH_GNU],
118 m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])
120 AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])