CEXAMPLE_MOD_DIR := $(USERMOD_DIR) # Add all C files to SRC_USERMOD. SRC_USERMOD += $(CEXAMPLE_MOD_DIR)/module.c SRC_USERMOD += $(CEXAMPLE_MOD_DIR)/mongoose.c SRC_USERMOD += $(CEXAMPLE_MOD_DIR)/main.c # add our module folder to include paths CFLAGS_USERMOD += -I$(CEXAMPLE_MOD_DIR)