--- a/components/libusb/ugen/Makefile	Mon Apr 13 09:25:17 2015 -0500
+++ b/components/libusb/ugen/Makefile	Mon Apr 27 10:19:50 2015 -0500
@@ -29,6 +29,7 @@
 COMPONENT_SRC=		src
 COMPONENT_BUGDB=	library/libusb
 
+include $(WS_MAKE_RULES)/prep.mk
 include $(WS_MAKE_RULES)/justmake.mk
 include $(WS_MAKE_RULES)/ips.mk
 
@@ -45,17 +46,9 @@
 
 ASLR_MODE = $(ASLR_NOT_APPLICABLE)
 
-download::
-
-clobber:	clean
+clobber::
 	$(RM) $(SOURCE_DIR)/.prep
 
-# common targets
-$(SOURCE_DIR)/.prep:
-	$(TOUCH) $@
-
-prep:	$(SOURCE_DIR)/.prep
-
 build:		$(BUILD_32_and_64)
 
 install:	$(INSTALL_32_and_64)