# Check for fnmatch - serial 4.

# Copyright (C) 2000-2007, 2009-2010 Free Software Foundation, Inc.

# This file is free software; the Free Software Foundation

# gives unlimited permission to copy and/or distribute it,

# with or without modifications, as long as this notice is preserved.

# Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.

# New applications should use the macros below instead.

# Request a POSIX compliant fnmatch function.

AC_DEFUN([gl_FUNC_FNMATCH_POSIX],

[

m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX])

dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.

dnl This is only needed if gl_fnmatch_required = GNU. It would be possible

dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting

dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file.

AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

FNMATCH_H=

gl_fnmatch_required_lowercase=`echo $gl_fnmatch_required | tr 'A-Z' 'a-z'`

gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"

AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],

[$gl_fnmatch_cache_var],

[dnl Some versions of Solaris, SCO, and the GNU C Library

dnl have a broken or incompatible fnmatch.

dnl So we run a test program. If we are cross-compiling, take no chance.

dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this

dnl test.

if test $gl_fnmatch_required = GNU; then

gl_fnmatch_gnu_start=

gl_fnmatch_gnu_end=

else

gl_fnmatch_gnu_start='#if 0'

gl_fnmatch_gnu_end='#endif'

fi

AC_RUN_IFELSE(

[AC_LANG_PROGRAM(

[[#include <fnmatch.h>

static int

y (char const *pattern, char const *string, int flags)

{

return fnmatch (pattern, string, flags) == 0;

}

static int

n (char const *pattern, char const *string, int flags)

{

return fnmatch (pattern, string, flags) == FNM_NOMATCH;

}

]],

[[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";

char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";

static char const A_1[] = { 'A' - 1, 0 };

static char const A01[] = { 'A' + 1, 0 };

static char const a_1[] = { 'a' - 1, 0 };

static char const a01[] = { 'a' + 1, 0 };

static char const bs_1[] = { '\\\\' - 1, 0 };

static char const bs01[] = { '\\\\' + 1, 0 };

return

!(n ("a*", "", 0)

&& y ("a*", "abc", 0)

&& n ("d*/*1", "d/s/1", FNM_PATHNAME)

&& y ("a\\\\bc", "abc", 0)

&& n ("a\\\\bc", "abc", FNM_NOESCAPE)

&& y ("*x", ".x", 0)

&& n ("*x", ".x", FNM_PERIOD)

&& y (Apat, "\\\\", 0) && y (Apat, "A", 0)

&& y (apat, "\\\\", 0) && y (apat, "a", 0)

&& n (Apat, A_1, 0) == ('A' < '\\\\')

&& n (apat, a_1, 0) == ('a' < '\\\\')

&& y (Apat, A01, 0) == ('A' < '\\\\')

&& y (apat, a01, 0) == ('a' < '\\\\')

&& y (Apat, bs_1, 0) == ('A' < '\\\\')

&& y (apat, bs_1, 0) == ('a' < '\\\\')

&& n (Apat, bs01, 0) == ('A' < '\\\\')

&& n (apat, bs01, 0) == ('a' < '\\\\')

$gl_fnmatch_gnu_start

&& y ("xxXX", "xXxX", FNM_CASEFOLD)

&& y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)

&& n ("d*/*1", "d/s/1", FNM_FILE_NAME)

&& y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)

&& y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)

&& y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)

$gl_fnmatch_gnu_end

);

]])],

[eval "$gl_fnmatch_cache_var=yes"],

[eval "$gl_fnmatch_cache_var=no"],

[eval "$gl_fnmatch_cache_var=\"guessing no\""])

])

eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""

if test "$gl_fnmatch_result" = yes; then

dnl Not strictly necessary. Only to avoid spurious leftover files if people

dnl don't do "make distclean".

rm -f "$gl_source_base/fnmatch.h"

else

FNMATCH_H=fnmatch.h

AC_LIBOBJ([fnmatch])

dnl We must choose a different name for our function, since on ELF systems

dnl a broken fnmatch() in libc.so would override our fnmatch() if it is

dnl compiled into a shared library.

AC_DEFINE_UNQUOTED([fnmatch], [${gl_fnmatch_required_lowercase}_fnmatch],

[Define to a replacement function name for fnmatch().])

dnl Prerequisites of lib/fnmatch.c.

AC_REQUIRE([AC_TYPE_MBSTATE_T])

AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])

AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])

AC_CHECK_HEADERS_ONCE([wctype.h])

fi

AC_SUBST([FNMATCH_H])

])

# Request a POSIX compliant fnmatch function with GNU extensions.

AC_DEFUN([gl_FUNC_FNMATCH_GNU],

[

m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])

AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])

])