Avoid some autoconf warnings.

[gnulib.git] / m4 / fnmatch.m4

diff --git a/m4/fnmatch.m4 b/m4/fnmatch.m4
index d638f67..495cbf9 100644 (file)
--- a/m4/fnmatch.m4
+++ b/m4/fnmatch.m4
@@ -1,6 +1,6 @@
-# Check for fnmatch.
+# Check for fnmatch - serial 2.
 
-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
+# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
 # Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -23,33 +23,52 @@ AC_DEFUN([_AC_FUNC_FNMATCH_IF],
    dnl Thanks to John Oleynick, François Pinard, and Paul Eggert for this test.
    AC_RUN_IFELSE(
       [AC_LANG_PROGRAM(
-        [
-#         include <stdlib.h>
-#         include <fnmatch.h>
-#         define y(a, b, c) (fnmatch (a, b, c) == 0)
-#         define n(a, b, c) (fnmatch (a, b, c) == FNM_NOMATCH)
+        [[#include <fnmatch.h>
           static int
-          fnm (char const *pattern, char const *string, int flags)
+          y (char const *pattern, char const *string, int flags)
           {
-            return fnmatch (pattern, string, flags);
+            return fnmatch (pattern, string, flags) == 0;
           }
-         ],
-        [exit
-          (!((fnm ? fnm : fnmatch) ("a*", "", 0) == FNM_NOMATCH
+          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)
-             && m4_if([$1], [GNU],
+             && 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' < '\\\\')
+             && ]m4_if([$1], [GNU],
                   [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)],
-                  1)));])],
+                  1))[;]])],
       [$2=yes],
       [$2=no],
       [$2=cross])])
@@ -64,8 +83,8 @@ AC_DEFUN([_AC_LIBOBJ_FNMATCH],
 [AC_REQUIRE([AC_FUNC_ALLOCA])dnl
 AC_REQUIRE([AC_TYPE_MBSTATE_T])dnl
 AC_CHECK_DECLS([isblank], [], [], [#include <ctype.h>])
-AC_CHECK_FUNCS([btowc mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
-AC_CHECK_HEADERS([wchar.h wctype.h])
+AC_CHECK_FUNCS_ONCE([btowc isblank iswctype mbsrtowcs mempcpy wmemchr wmemcpy wmempcpy])
+AC_CHECK_HEADERS_ONCE([wctype.h])
 AC_LIBOBJ([fnmatch])
 FNMATCH_H=fnmatch.h
 ])# _AC_LIBOBJ_FNMATCH
@@ -75,8 +94,8 @@ AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
 [
   FNMATCH_H=
   _AC_FUNC_FNMATCH_IF([POSIX], [ac_cv_func_fnmatch_posix],
-                      [rm -f lib/fnmatch.h],
-                      [_AC_LIBOBJ_FNMATCH])
+                     [rm -f lib/fnmatch.h],
+                     [_AC_LIBOBJ_FNMATCH])
   if test $ac_cv_func_fnmatch_posix != yes; then
     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
@@ -91,12 +110,12 @@ AC_DEFUN([gl_FUNC_FNMATCH_POSIX],
 AC_DEFUN([gl_FUNC_FNMATCH_GNU],
 [
   dnl Persuade glibc <fnmatch.h> to declare FNM_CASEFOLD etc.
-  AC_REQUIRE([AC_GNU_SOURCE])
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
   FNMATCH_H=
   _AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
-                      [rm -f lib/fnmatch.h],
-                      [_AC_LIBOBJ_FNMATCH])
+                     [rm -f lib/fnmatch.h],
+                     [_AC_LIBOBJ_FNMATCH])
   if test $ac_cv_func_fnmatch_gnu != yes; then
     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