X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/b906441c9568615be3ddce717a6e365b2e368af3..c7e441b49c3938977213bad32d7681db78ce5f48:/m4/memcmp.m4

diff --git a/m4/memcmp.m4 b/m4/memcmp.m4
index 1de34093..4442e47b 100644
--- a/m4/memcmp.m4
+++ b/m4/memcmp.m4
@@ -1,9 +1,22 @@
-#serial 7
+# 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.
 
 AC_DEFUN([jm_FUNC_MEMCMP],
-[AC_REQUIRE([AC_FUNC_MEMCMP])dnl
- 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.])
- fi
+[
+  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)
 ])