SRC_DIRS = src
INC_DIRS = inc
OUTPUT_DIR = lib
BUILD_DIR = output/$(LIB_BUILD_DIR)

SRC_FILES = boot.c control.c gpio.c helpers.c init.c io_dma.c save.c sd.c usb.c

CFLAGS += -ffunction-sections -fdata-sections -Os -Wall -MMD -MP $(patsubst %, -I%, $(INC_DIRS))

OBJS = $(addprefix $(BUILD_DIR)/, $(notdir $(SRC_FILES:.c=.o)))
DEPS = $(OBJS:.o=.d)

VPATH = $(SRC_DIRS)

all: create_build_dirs $(OUTPUT_DIR)/$(LIB_NAME).a

create_build_dirs: $(OUTPUT_DIR) $(BUILD_DIR)

$(OUTPUT_DIR):
	mkdir -p ./$(OUTPUT_DIR)

$(BUILD_DIR):
	mkdir -p ./$(BUILD_DIR)

$(BUILD_DIR)/%.o: %.c
	$(COMPILE.c) $(OUTPUT_OPTION) $<

$(OUTPUT_DIR)/$(LIB_NAME).a: $(OBJS)
	$(AR) -rcs -o $@ $(OBJS)

clean:
	rm -rf ./$(BUILD_DIR) 2> /dev/null
	rm -rf ./$(OUTPUT_DIR) 2> /dev/null

.PHONY: all clean create_build_dirs

-include $(DEPS)