-install: image_clean $(patsubst %,%-install,$(TARGETS-y)) image_install
-clean: $(patsubst %,%-clean,$(TARGETS-y)) image_clean
+install: image_clean linux-install image_install
+
+ifeq ($(CONFIG_SDK),y)
+install: sdk_install
+endif
+ifeq ($(CONFIG_IB),y)
+install: imagebuilder_install
+endif
+
+clean: linux-clean sdk-clean imagebuilder-clean image_clean
+
+prereq: FORCE
+ $(MAKE) -C linux/$(BOARD)-$(KERNEL) prereq
+ $(MAKE) -C $(IMAGE_DIR) prereq
+
+sdk_install: FORCE
+ $(MAKE) -C sdk install