SRC_DIR := common 

ifeq ($(CONFIG_BSP_USING_GPIO),y)
  SRC_DIR += gpio
endif

ifeq ($(CONFIG_BSP_USING_UART),y)
  SRC_DIR += uart
endif

ifeq ($(CONFIG_BSP_USING_EXTMEM),y)
  SRC_DIR += extmem
endif

include $(KERNEL_ROOT)/compiler.mk