--- Makefile.orig	2012-01-28 20:35:32.000000000 +0000
+++ Makefile	2012-01-28 20:31:56.000000000 +0000
@@ -0,0 +1,3 @@
+SUBDIR= dma dma-mbox-create
+
+.include <bsd.subdir.mk>