122 lines
5 KiB
Text
122 lines
5 KiB
Text
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# Check for fnmatch - serial 4.
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# Copyright (C) 2000-2007, 2009-2010 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.
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# New applications should use the macros below instead.
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# Request a POSIX compliant fnmatch function.
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AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
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[
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m4_divert_text([DEFAULTS], [gl_fnmatch_required=POSIX])
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dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
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dnl This is only needed if gl_fnmatch_required = GNU. It would be possible
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dnl to avoid this dependency for gl_FUNC_FNMATCH_POSIX by putting
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dnl gl_FUNC_FNMATCH_GNU into a separate .m4 file.
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AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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FNMATCH_H=
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gl_fnmatch_required_lowercase=`echo $gl_fnmatch_required | tr 'A-Z' 'a-z'`
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gl_fnmatch_cache_var="gl_cv_func_fnmatch_${gl_fnmatch_required_lowercase}"
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AC_CACHE_CHECK([for working $gl_fnmatch_required fnmatch],
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[$gl_fnmatch_cache_var],
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[dnl Some versions of Solaris, SCO, and the GNU C Library
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dnl have a broken or incompatible fnmatch.
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dnl So we run a test program. If we are cross-compiling, take no chance.
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dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this
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dnl test.
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if test $gl_fnmatch_required = GNU; then
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gl_fnmatch_gnu_start=
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gl_fnmatch_gnu_end=
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else
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gl_fnmatch_gnu_start='#if 0'
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gl_fnmatch_gnu_end='#endif'
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fi
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <fnmatch.h>
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static int
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y (char const *pattern, char const *string, int flags)
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{
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return fnmatch (pattern, string, flags) == 0;
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}
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static int
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n (char const *pattern, char const *string, int flags)
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{
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return fnmatch (pattern, string, flags) == FNM_NOMATCH;
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}
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]],
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[[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
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char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
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static char const A_1[] = { 'A' - 1, 0 };
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static char const A01[] = { 'A' + 1, 0 };
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static char const a_1[] = { 'a' - 1, 0 };
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static char const a01[] = { 'a' + 1, 0 };
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static char const bs_1[] = { '\\\\' - 1, 0 };
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static char const bs01[] = { '\\\\' + 1, 0 };
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return
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!(n ("a*", "", 0)
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&& y ("a*", "abc", 0)
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&& n ("d*/*1", "d/s/1", FNM_PATHNAME)
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&& y ("a\\\\bc", "abc", 0)
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&& n ("a\\\\bc", "abc", FNM_NOESCAPE)
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&& y ("*x", ".x", 0)
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&& n ("*x", ".x", FNM_PERIOD)
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&& y (Apat, "\\\\", 0) && y (Apat, "A", 0)
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&& y (apat, "\\\\", 0) && y (apat, "a", 0)
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&& n (Apat, A_1, 0) == ('A' < '\\\\')
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&& n (apat, a_1, 0) == ('a' < '\\\\')
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&& y (Apat, A01, 0) == ('A' < '\\\\')
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&& y (apat, a01, 0) == ('a' < '\\\\')
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&& y (Apat, bs_1, 0) == ('A' < '\\\\')
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&& y (apat, bs_1, 0) == ('a' < '\\\\')
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&& n (Apat, bs01, 0) == ('A' < '\\\\')
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&& n (apat, bs01, 0) == ('a' < '\\\\')
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$gl_fnmatch_gnu_start
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&& y ("xxXX", "xXxX", FNM_CASEFOLD)
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&& y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
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&& n ("d*/*1", "d/s/1", FNM_FILE_NAME)
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&& y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
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&& y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
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&& y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)
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$gl_fnmatch_gnu_end
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);
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]])],
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[eval "$gl_fnmatch_cache_var=yes"],
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[eval "$gl_fnmatch_cache_var=no"],
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[eval "$gl_fnmatch_cache_var=\"guessing no\""])
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])
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eval "gl_fnmatch_result=\"\$$gl_fnmatch_cache_var\""
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if test "$gl_fnmatch_result" = yes; then
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dnl Not strictly necessary. Only to avoid spurious leftover files if people
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dnl don't do "make distclean".
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rm -f "$gl_source_base/fnmatch.h"
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else
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FNMATCH_H=fnmatch.h
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AC_LIBOBJ([fnmatch])
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dnl We must choose a different name for our function, since on ELF systems
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dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
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dnl compiled into a shared library.
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AC_DEFINE_UNQUOTED([fnmatch], [${gl_fnmatch_required_lowercase}_fnmatch],
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[Define to a replacement function name for fnmatch().])
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dnl Prerequisites of lib/fnmatch.c.
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AC_REQUIRE([AC_TYPE_MBSTATE_T])
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AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
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AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
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AC_CHECK_HEADERS_ONCE([wctype.h])
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fi
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AC_SUBST([FNMATCH_H])
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])
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# Request a POSIX compliant fnmatch function with GNU extensions.
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AC_DEFUN([gl_FUNC_FNMATCH_GNU],
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[
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m4_divert_text([INIT_PREPARE], [gl_fnmatch_required=GNU])
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AC_REQUIRE([gl_FUNC_FNMATCH_POSIX])
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])
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