--- a/Kbuild.in	Fri May 13 15:33:16 2011 +0200
+++ b/Kbuild.in	Fri May 13 15:34:20 2011 +0200
@@ -35,4 +35,8 @@
 	obj-m += tty/
 endif
 
+ifeq (@ENABLE_RTDM@,1)
+	obj-m += rtdm/
+endif
+
 #------------------------------------------------------------------------------