New modules strchrnul, argp.

[gnulib.git] / m4 / memcmp.m4

diff --git a/m4/memcmp.m4 b/m4/memcmp.m4
index e76aeda..4442e47 100644 (file)
--- a/m4/memcmp.m4
+++ b/m4/memcmp.m4
@@ -1,13 +1,22 @@
-#serial 1
+# memcmp.m4 serial 8
+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.
 
-dnl If you use this macro in a package, you should
-dnl add the following two lines to acconfig.h:
-dnl   /* Define to rpl_memcmp if the replacement function should be used.  */
-dnl   #undef memcmp
-dnl
-AC_DEFUN(jm_FUNC_MEMCMP,
-[AC_REQUIRE([AC_FUNC_MEMCMP])dnl
- if test $ac_cv_func_memcmp_clean = no; then
-   AC_DEFINE_UNQUOTED(memcmp, rpl_memcmp)
- fi
+AC_DEFUN([jm_FUNC_MEMCMP],
+[
+  AC_REQUIRE([AC_FUNC_MEMCMP])
+  if test $ac_cv_func_memcmp_working = no; then
+    AC_DEFINE(memcmp, rpl_memcmp,
+      [Define to rpl_memcmp if the replacement function should be used.])
+    gl_PREREQ_MEMCMP
+  fi
+])
+
+# Prerequisites of lib/memcmp.c.
+AC_DEFUN([gl_PREREQ_MEMCMP], [
+  AC_CHECK_HEADERS_ONCE(string.h)
 ])