SRC_DIR := ifeq ($(CONFIG_RESOURCES_LWIP),y) ifeq ($(CONFIG_USING_CONTROL_PLC_OPCUA), y) SRC_DIR += opcua endif ifeq ($(CONFIG_USING_CONTROL_PLC_SOCKET), y) SRC_DIR += socket endif endif SRC_FILES += interoperability.c include $(KERNEL_ROOT)/compiler.mk