-START := $(START_PATH)/start.o
-ifeq ($(CPU),x86)
-START += $(START_PATH)/start16.o
-START += $(START_PATH)/resetvec.o
-endif
-ifeq ($(CPU),ppc4xx)
-START += $(START_PATH)/resetvec.o
-endif
-ifeq ($(CPU),mpc85xx)
-START += $(START_PATH)/resetvec.o
-endif
+head-y := $(START_PATH)/start.o
+head-$(CONFIG_X86) += $(START_PATH)/start16.o $(START_PATH)/resetvec.o
+head-$(CONFIG_4xx) += $(START_PATH)/resetvec.o
+head-$(CONFIG_MPC85xx) += $(START_PATH)/resetvec.o