http://bugs.motifzone.net/show_bug.cgi?id=1595

--- openMotif-2.2.3-orig/configure.in
+++ openMotif-2.2.3/configure.in
@@ -23,12 +23,11 @@
 dnl
 dnl AC_DISABLE_STATIC
 
-AM_CONFIG_HEADER(include/config.h)
+AC_CONFIG_HEADERS(include/config.h)
 
 dnl Checks for programs.
 AC_PROG_CC
 AC_PROG_CPP
-AM_PROG_CC_STDC
 AM_PROG_LIBTOOL
 AC_EXEEXT