SRC_DIR := libraries ifeq ($(CONFIG_BSP_USING_UART),y) SRC_DIR += uart endif ifeq ($(CONFIG_BSP_USING_SPI),y) SRC_DIR += spi endif ifeq ($(CONFIG_BSP_USING_USB),y) SRC_DIR += usb endif ifeq ($(CONFIG_BSP_USING_WDT),y) SRC_DIR += watchdog endif ifeq ($(CONFIG_BSP_USING_CAN),y) SRC_DIR += can endif include $(KERNEL_ROOT)/compiler.mk