--- configure.in.orig	2005-12-23 06:15:21.000000000 -0800
+++ configure.in	2012-12-30 15:58:09.000000000 -0800
@@ -16,7 +16,7 @@
 AM_INIT_AUTOMAKE(OpenSP, 1.5.2, no-define)
 AM_MAINTAINER_MODE
 AC_PREREQ(2.53)
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 AM_SANITY_CHECK
 
 dnl Autoheader definitions