diff -r 4d8c9a441ef6 -r b544025bd696 Kbuild.in
--- a/Kbuild.in	Thu May 12 16:38:48 2011 +0200
+++ b/Kbuild.in	Thu May 12 16:45:02 2011 +0200
@@ -35,4 +35,8 @@
 	obj-m += tty/
 endif
 
+ifeq (@ENABLE_RTDM@,1)
+	obj-m += rtdm/
+endif
+
 #------------------------------------------------------------------------------