1# Check for fnmatch.
2
3# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
4# Foundation, Inc.
5# This file is free software; the Free Software Foundation
6# gives unlimited permission to copy and/or distribute it,
7# with or without modifications, as long as this notice is preserved.
8
9# Autoconf defines AC_FUNC_FNMATCH, but that is obsolescent.
10# New applications should use the macros below instead.
11
12# _AC_FUNC_FNMATCH_IF(STANDARD = GNU | POSIX, CACHE_VAR, IF-TRUE, IF-FALSE)
13# -------------------------------------------------------------------------
14# If a STANDARD compliant fnmatch is found, run IF-TRUE, otherwise
15# IF-FALSE.  Use CACHE_VAR.
16AC_DEFUN([_AC_FUNC_FNMATCH_IF],
17[AC_CACHE_CHECK(
18   [for working $1 fnmatch],
19   [$2],
20  [dnl Some versions of Solaris, SCO, and the GNU C Library
21   dnl have a broken or incompatible fnmatch.
22   dnl So we run a test program.  If we are cross-compiling, take no chance.
23   dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this test.
24   AC_RUN_IFELSE(
25      [AC_LANG_PROGRAM(
26	 [[#include <fnmatch.h>
27	   static int
28	   y (char const *pattern, char const *string, int flags)
29	   {
30	     return fnmatch (pattern, string, flags) == 0;
31	   }
32	   static int
33	   n (char const *pattern, char const *string, int flags)
34	   {
35	     return fnmatch (pattern, string, flags) == FNM_NOMATCH;
36	   }
37	 ]],
38	 [[char const *Apat = 'A' < '\\\\' ? "[A-\\\\\\\\]" : "[\\\\\\\\-A]";
39	   char const *apat = 'a' < '\\\\' ? "[a-\\\\\\\\]" : "[\\\\\\\\-a]";
40	   static char const A_1[] = { 'A' - 1, 0 };
41	   static char const A01[] = { 'A' + 1, 0 };
42	   static char const a_1[] = { 'a' - 1, 0 };
43	   static char const a01[] = { 'a' + 1, 0 };
44	   static char const bs_1[] = { '\\\\' - 1, 0 };
45	   static char const bs01[] = { '\\\\' + 1, 0 };
46	   return
47	    !(n ("a*", "", 0)
48	      && y ("a*", "abc", 0)
49	      && n ("d*/*1", "d/s/1", FNM_PATHNAME)
50	      && y ("a\\\\bc", "abc", 0)
51	      && n ("a\\\\bc", "abc", FNM_NOESCAPE)
52	      && y ("*x", ".x", 0)
53	      && n ("*x", ".x", FNM_PERIOD)
54	      && y (Apat, "\\\\", 0) && y (Apat, "A", 0)
55	      && y (apat, "\\\\", 0) && y (apat, "a", 0)
56	      && n (Apat, A_1, 0) == ('A' < '\\\\')
57	      && n (apat, a_1, 0) == ('a' < '\\\\')
58	      && y (Apat, A01, 0) == ('A' < '\\\\')
59	      && y (apat, a01, 0) == ('a' < '\\\\')
60	      && y (Apat, bs_1, 0) == ('A' < '\\\\')
61	      && y (apat, bs_1, 0) == ('a' < '\\\\')
62	      && n (Apat, bs01, 0) == ('A' < '\\\\')
63	      && n (apat, bs01, 0) == ('a' < '\\\\')
64	      && ]m4_if([$1], [GNU],
65		   [y ("xxXX", "xXxX", FNM_CASEFOLD)
66		    && y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
67		    && n ("d*/*1", "d/s/1", FNM_FILE_NAME)
68		    && y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
69		    && y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
70		    && y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)],
71		   1))[;]])],
72      [$2=yes],
73      [$2=no],
74      [$2=cross])])
75AS_IF([test $$2 = yes], [$3], [$4])
76])# _AC_FUNC_FNMATCH_IF
77
78
79# _AC_LIBOBJ_FNMATCH
80# ------------------
81# Prepare the replacement of fnmatch.
82AC_DEFUN([_AC_LIBOBJ_FNMATCH],
83[AC_REQUIRE([AC_FUNC_ALLOCA])dnl
84AC_REQUIRE([AC_TYPE_MBSTATE_T])dnl
85AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
86AC_CHECK_FUNCS_ONCE([btowc iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
87AC_CHECK_HEADERS_ONCE([wctype.h])
88AC_LIBOBJ([fnmatch])
89FNMATCH_H=fnmatch.h
90])# _AC_LIBOBJ_FNMATCH
91
92
93AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
94[
95  FNMATCH_H=
96  _AC_FUNC_FNMATCH_IF([POSIX], [ac_cv_func_fnmatch_posix],
97		      [rm -f lib/fnmatch.h],
98		      [_AC_LIBOBJ_FNMATCH])
99  if test $ac_cv_func_fnmatch_posix != yes; then
100    dnl We must choose a different name for our function, since on ELF systems
101    dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
102    dnl compiled into a shared library.
103    AC_DEFINE([fnmatch], [posix_fnmatch],
104      [Define to a replacement function name for fnmatch().])
105  fi
106  AC_SUBST([FNMATCH_H])
107])
108
109
110AC_DEFUN([gl_FUNC_FNMATCH_GNU],
111[
112  dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
113  AC_REQUIRE([AC_GNU_SOURCE])
114
115  FNMATCH_H=
116  _AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
117		      [rm -f lib/fnmatch.h],
118		      [_AC_LIBOBJ_FNMATCH])
119  if test $ac_cv_func_fnmatch_gnu != yes; then
120    dnl We must choose a different name for our function, since on ELF systems
121    dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
122    dnl compiled into a shared library.
123    AC_DEFINE([fnmatch], [gnu_fnmatch],
124      [Define to a replacement function name for fnmatch().])
125  fi
126  AC_SUBST([FNMATCH_H])
127])
128