Per http://www.open-mpi.org/community/lists/devel/2008/04/3778.php,

Ralf W.'s suggestion for More Automake Goodness(tm).

This commit was SVN r18347.

Makefile.am

@@ -9,7 +9,7 @@
 #                         University of Stuttgart.  All rights reserved.
 # Copyright (c) 2004-2005 The Regents of the University of California.
 #                         All rights reserved.
-# Copyright (c) 2006      Cisco Systems, Inc.  All rights reserved.
+# Copyright (c) 2006-2008 Cisco Systems, Inc.  All rights reserved.
 # $COPYRIGHT$
 # 
 # Additional copyrights may follow
@@ -24,3 +24,5 @@ include examples/Makefile.include
 
 dist-hook:
 	csh "$(top_srcdir)/config/distscript.csh" "$(top_srcdir)" "$(distdir)" "$(OMPI_VERSION)" "$(OMPI_SVN_R)"
+
+ACLOCAL_AMFLAGS = -I config