diff -up ilmbase-1.0.3/configure.ac.automake-1_13 ilmbase-1.0.3/configure.ac
--- ilmbase-1.0.3/configure.ac.automake-1_13	2012-07-31 00:06:57.000000000 +0200
+++ ilmbase-1.0.3/configure.ac	2013-01-05 19:32:19.144559701 +0100
@@ -3,7 +3,7 @@ AC_INIT(IlmBase, 1.0.3)
 AC_SUBST(ILMBASE_VERSION, 1.0.3)
 AC_CANONICAL_HOST
 AC_CONFIG_SRCDIR(ImathTest/main.cpp)
-AM_CONFIG_HEADER(config/IlmBaseConfig.h)
+AC_CONFIG_HEADERS(config/IlmBaseConfig.h)
 AM_INIT_AUTOMAKE(1.6.3)  dnl Require automake 1.6.3 or better
 AM_MAINTAINER_MODE