From 10ff1d4404938ecd1d7ab9dae892c727e8d6100e Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 22 Jun 2002 08:54:23 +0000
Subject: [PATCH] Update from diffutils-2.8.2.

---
 m4/fnmatch.m4 | 102 ++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 87 insertions(+), 15 deletions(-)

diff --git a/m4/fnmatch.m4 b/m4/fnmatch.m4
index a4aacd1c6..1b19d3377 100644
--- a/m4/fnmatch.m4
+++ b/m4/fnmatch.m4
@@ -1,15 +1,87 @@
-#serial 5
-
-dnl Determine whether to add fnmatch.o to LIBOBJS and to
-dnl define fnmatch to rpl_fnmatch.
-dnl
-
-AC_DEFUN([jm_FUNC_FNMATCH],
-[
-  AC_FUNC_FNMATCH
-  if test $ac_cv_func_fnmatch_works = no; then
-    AC_LIBOBJ(fnmatch)
-    AC_DEFINE(fnmatch, rpl_fnmatch,
-      [Define to rpl_fnmatch if the replacement function should be used.])
-  fi
-])
+# Check for fnmatch.
+
+# This is a modified version of autoconf's AC_FUNC_FNMATCH.
+# This file should be removed after Autoconf 2.54 is required.
+
+# Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# _AC_FUNC_FNMATCH_IF(STANDARD = GNU | POSIX, CACHE_VAR, IF-TRUE, IF-FALSE)
+# -------------------------------------------------------------------------
+# If a STANDARD compliant fnmatch is found, run IF-TRUE, otherwise
+# IF-FALSE.  Use CACHE_VAR.
+AC_DEFUN([_AC_FUNC_FNMATCH_IF],
+[AC_CACHE_CHECK(
+   [for working $1 fnmatch],
+   [$2],
+  [# Some versions of Solaris, SCO, and the GNU C Library
+   # have a broken or incompatible fnmatch.
+   # So we run a test program.  If we are cross-compiling, take no chance.
+   # Thanks to John Oleynick, Franc,ois Pinard, and Paul Eggert for this test.
+   AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM(
+	 [#include <fnmatch.h>
+#	   define y(a, b, c) (fnmatch (a, b, c) == 0)
+#	   define n(a, b, c) (fnmatch (a, b, c) == FNM_NOMATCH)
+         ],
+	 [exit
+	   (!(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 ("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)));])],
+      [$2=yes],
+      [$2=no],
+      [$2=cross])])
+AS_IF([test $$2 = yes], [$3], [$4])
+])# _AC_FUNC_FNMATCH_IF
+
+
+# _AC_LIBOBJ_FNMATCH
+# ------------------
+# Prepare the replacement of fnmatch.
+AC_DEFUN([_AC_LIBOBJ_FNMATCH],
+[AC_REQUIRE([AC_C_CONST])dnl
+AC_REQUIRE([AC_FUNC_ALLOCA])dnl
+AC_REQUIRE([AC_TYPE_MBSTATE_T])dnl
+AC_CHECK_DECLS([getenv])
+AC_CHECK_FUNCS([mbsrtowcs mempcpy wmempcpy])
+AC_CHECK_HEADERS([wchar.h wctype.h])
+AC_LIBOBJ([fnmatch])
+AC_CONFIG_LINKS([lib/fnmatch.h:lib/fnmatch_.h])
+AC_DEFINE(fnmatch, rpl_fnmatch,
+          [Define to rpl_fnmatch if the replacement function should be used.])
+])# _AC_LIBOBJ_FNMATCH
+
+
+# AC_FUNC_FNMATCH_GNU
+# -------------------
+AC_DEFUN([AC_FUNC_FNMATCH_GNU],
+[AC_REQUIRE([AC_GNU_SOURCE])
+_AC_FUNC_FNMATCH_IF([GNU], [ac_cv_func_fnmatch_gnu],
+                    [rm -f lib/fnmatch.h],
+                    [_AC_LIBOBJ_FNMATCH])
+])# AC_FUNC_FNMATCH_GNU
-- 
2.34.1