diff -up openmotif-2.3.3/configure.ac.automake-1_13 openmotif-2.3.3/configure.ac
--- openmotif-2.3.3/configure.ac.automake-1_13	2013-01-13 04:00:08.290180764 +0100
+++ openmotif-2.3.3/configure.ac	2013-01-13 04:00:48.226764753 +0100
@@ -31,12 +31,11 @@ dnl Override a default in libtool.
 dnl
 dnl AC_DISABLE_STATIC
 
-AM_CONFIG_HEADER(include/config.h lib/Xm/Xm.h)
+AC_CONFIG_HEADERS(include/config.h lib/Xm/Xm.h)
 
 dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
-AM_PROG_CC_STDC
 AM_PROG_LIBTOOL
 
 AC_EXEEXT