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      1 # Check for fnmatch.
      2 
      3 # Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 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.
     16 AC_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, Franois Pinard, and Paul Eggert for this test.
     24    AC_RUN_IFELSE(
     25       [AC_LANG_PROGRAM(
     26 	 [
     27 #	   include <stdlib.h>
     28 #	   include <fnmatch.h>
     29 #	   define y(a, b, c) (fnmatch (a, b, c) == 0)
     30 #	   define n(a, b, c) (fnmatch (a, b, c) == FNM_NOMATCH)
     31 	   static int
     32 	   fnm (char const *pattern, char const *string, int flags)
     33 	   {
     34 	     return fnmatch (pattern, string, flags);
     35 	   }
     36          ],
     37 	 [exit
     38 	   (!(fnm ("a*", "", 0) == FNM_NOMATCH
     39 	      && y ("a*", "abc", 0)
     40 	      && n ("d*/*1", "d/s/1", FNM_PATHNAME)
     41 	      && y ("a\\\\bc", "abc", 0)
     42 	      && n ("a\\\\bc", "abc", FNM_NOESCAPE)
     43 	      && y ("*x", ".x", 0)
     44 	      && n ("*x", ".x", FNM_PERIOD)
     45 	      && m4_if([$1], [GNU],
     46 		   [y ("xxXX", "xXxX", FNM_CASEFOLD)
     47 		    && y ("a++(x|yy)b", "a+xyyyyxb", FNM_EXTMATCH)
     48 		    && n ("d*/*1", "d/s/1", FNM_FILE_NAME)
     49 		    && y ("*", "x", FNM_FILE_NAME | FNM_LEADING_DIR)
     50 		    && y ("x*", "x/y/z", FNM_FILE_NAME | FNM_LEADING_DIR)
     51 		    && y ("*c*", "c/x", FNM_FILE_NAME | FNM_LEADING_DIR)],
     52 		   1)));])],
     53       [$2=yes],
     54       [$2=no],
     55       [$2=cross])])
     56 AS_IF([test $$2 = yes], [$3], [$4])
     57 ])# _AC_FUNC_FNMATCH_IF
     58 
     59 
     60 # _AC_LIBOBJ_FNMATCH
     61 # ------------------
     62 # Prepare the replacement of fnmatch.
     63 AC_DEFUN([_AC_LIBOBJ_FNMATCH],
     64 [AC_REQUIRE([AC_FUNC_ALLOCA])dnl
     65 AC_REQUIRE([AC_TYPE_MBSTATE_T])dnl
     66 AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
     67 AC_CHECK_FUNCS([btowc mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
     68 AC_CHECK_HEADERS([wchar.h wctype.h])
     69 AC_LIBOBJ([fnmatch])
     70 FNMATCH_H=fnmatch.h
     71 ])# _AC_LIBOBJ_FNMATCH
     72 
     73 
     74 AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
     75 [
     76   FNMATCH_H=
     77   _AC_FUNC_FNMATCH_IF([POSIX], [ac_cv_func_fnmatch_posix],
     78                       [rm -f lib/fnmatch.h],
     79                       [_AC_LIBOBJ_FNMATCH])
     80   if test $ac_cv_func_fnmatch_posix != yes; then
     81     dnl We must choose a different name for our function, since on ELF systems
     82     dnl a broken fnmatch() in libc.so would override our fnmatch() if it is
     83     dnl compiled into a shared library.
     84     AC_DEFINE([fnmatch], [posix_fnmatch],
     85       [Define to a replacement function name for fnmatch().])
     86   fi
     87   AC_SUBST([FNMATCH_H])
     88 ])
     89 
     90 
     91 AC_DEFUN([gl_FUNC_FNMATCH_GNU],
     92 [
     93   dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
     94   AC_REQUIRE([AC_GNU_SOURCE])
     95 
     96   FNMATCH_H=
     97   _AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
     98                       [rm -f lib/fnmatch.h],
     99                       [_AC_LIBOBJ_FNMATCH])
    100   if test $ac_cv_func_fnmatch_gnu != yes; then
    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([fnmatch], [gnu_fnmatch],
    105       [Define to a replacement function name for fnmatch().])
    106   fi
    107   AC_SUBST([FNMATCH_H])
    108 ])
    109