Makefile for STM32 development

Makefile

TARGET=main

CC=arm-none-eabi-gcc
LD=arm-none-eabi-gcc
AR=arm-none-eabi-ar
AS=arm-none-eabi-as
CP=arm-none-eabi-objcopy
OD=arm-none-eabi-objdump
SE=arm-none-eabi-size
SF=st-flash

BOARD = STM32F4
CFLAGS = -std=gnu99 -g -O2 -Wall -specs=nosys.specs -D$(BOARD)
CFLAGS += -mlittle-endian -mthumb -mthumb-interwork -mcpu=cortex-m0
CFLAGS += -fsingle-precision-constant -Wdouble-promotion

CM3_DIR = ~/embedded/libopencm3
# CMD_DIR_INCLUDE = $(CM3_DIR)/include/libopencm3/stm32/
CMD_DIR_INCLUDE = $(CM3_DIR)/include/
CMD_DIR_LIB = $(CM3_DIR)/lib/
# CMD_DIR_LIB = $(CM3_DIR)/lib/
INCLUDE = -I $(CMD_DIR_INCLUDE)
LDLIBS = $(CMD_DIR_LIB)

SRCS = main.c


.PHONY: $(TARGET)

$(TARGET): $(TARGET).elf

$(TARGET).elf: $(SRCS)
	$(CC) $(INCLUDE) $(CFLAGS) -L$(LDLIBS) $^ -o $@ -lopencm3_stm32f4
		$(CP) -O binary $(TARGET).elf $(TARGET).bin


clean:
	rm -f *.o $(TARGET).elf $(TARGET).bin



flash:
	$(SF) write $(TARGET).bin 0x8000000