-# memrchr.m4 serial 1
-dnl Copyright (C) 2002 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License. As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# memrchr.m4 serial 9
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_MEMRCHR],
[
dnl Persuade glibc <string.h> to declare memrchr().
- AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
- AC_REPLACE_FUNCS(memrchr)
+ AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
+ AC_CHECK_DECLS_ONCE([memrchr])
+ if test $ac_cv_have_decl_memrchr = no; then
+ HAVE_DECL_MEMRCHR=0
+ fi
+
+ AC_REPLACE_FUNCS([memrchr])
if test $ac_cv_func_memrchr = no; then
gl_PREREQ_MEMRCHR
fi
])
# Prerequisites of lib/memrchr.c.
-AC_DEFUN([gl_PREREQ_MEMRCHR], [
- AC_CHECK_HEADERS_ONCE(limits.h)
-])
+AC_DEFUN([gl_PREREQ_MEMRCHR], [:])