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=`
24 echo $gl_fnmatch_required | tr '[[A-Z]]' '[[a-z]]'
26 gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
27 AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],
28 [$gl_fnmatch_cache_var],
29 [dnl Some versions of Solaris, SCO, and the GNU C Library
30 dnl have a broken or incompatible fnmatch.
31 dnl So we run a test program. If we are cross-compiling, take no chance.
32 dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this
34 if test $gl_fnmatch_required = GNU; then
38 gl_fnmatch_gnu_start='#if 0'
39 gl_fnmatch_gnu_end='#endif'
43 [[#include <fnmatch.h>
45 y (char const *pattern, char const *string, int flags)
47 return fnmatch (pattern, string, flags) == 0;
50 n (char const *pattern, char const *string, int flags)
52 return fnmatch (pattern, string, flags) == FNM_NOMATCH;
55 [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
56 char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
57 static char const A_1[] = { 'A' - 1, 0 };
58 static char const A01[] = { 'A' + 1, 0 };
59 static char const a_1[] = { 'a' - 1, 0 };
60 static char const a01[] = { 'a' + 1, 0 };
61 static char const bs_1[] = { '\\\\' - 1, 0 };
62 static char const bs01[] = { '\\\\' + 1, 0 };
66 && n ("d*/*1", "d/s/1", FNM_PATHNAME)
67 && y ("a\\\\bc", "abc", 0)
68 && n ("a\\\\bc", "abc", FNM_NOESCAPE)
70 && n ("*x", ".x", FNM_PERIOD)
71 && y (Apat, "\\\\", 0) && y (Apat, "A", 0)
72 && y (apat, "\\\\", 0) && y (apat, "a", 0)
73 && n (Apat, A_1, 0) == ('A' < '\\\\')
74 && n (apat, a_1, 0) == ('a' < '\\\\')
75 && y (Apat, A01, 0) == ('A' < '\\\\')
76 && y (apat, a01, 0) == ('a' < '\\\\')
77 && y (Apat, bs_1, 0) == ('A' < '\\\\')
78 && y (apat, bs_1, 0) == ('a' < '\\\\')
79 && n (Apat, bs01, 0) == ('A' < '\\\\')
80 && n (apat, bs01, 0) == ('a' < '\\\\')
82 && y ("xxXX", "xXxX", FNM_CASEFOLD)
83 && y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
84 && n ("d*/*1", "d/s/1", FNM_FILE_NAME)
85 && y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
86 && y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
87 && y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)
91 [eval "$gl_fnmatch_cache_var=yes"],
92 [eval "$gl_fnmatch_cache_var=no"],
93 [eval "$gl_fnmatch_cache_var=\"guessing no\""])
95 eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
96 if test "$gl_fnmatch_result" = yes; then
97 dnl Not strictly necessary. Only to avoid spurious leftover files if people
98 dnl don't do "make distclean".
99 rm -f "$gl_source_base/fnmatch.h"
103 dnl We must choose a different name for our function, since on ELF systems
104 dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
105 dnl compiled into a shared library.
106 AC_DEFINE_UNQUOTED([fnmatch], [${gl_fnmatch_required_lowercase}_fnmatch],
107 [Define to a replacement function name for fnmatch().])
108 dnl Prerequisites of lib/fnmatch.c.
109 AC_REQUIRE([AC_TYPE_MBSTATE_T])
110 AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
111 AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
112 AC_CHECK_HEADERS_ONCE([wctype.h])
114 AC_SUBST([FNMATCH_H])
117 # Request a POSIX compliant fnmatch function with GNU extensions.
118 AC_DEFUN([gl_FUNC_FNMATCH_GNU],
120 m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])
122 AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])