-compile: linux-compile
-install: image_clean linux-install
-clean: $(patsubst %,%-clean,$(TARGETS)) image_clean
+compile: linux-compile image_compile
+install: image_clean $(patsubst %,%-install,$(TARGETS-y)) image_install
+clean: $(patsubst %,%-clean,$(TARGETS-y)) image_clean
+
+prereq: FORCE
+ $(MAKE) -C linux/$(BOARD)-$(KERNEL) prereq
+ $(MAKE) -C $(IMAGE_DIR) prereq