PROG              = traffic-light
OBJS              = main.o
MCU_TARGET        = attiny9
OPTIMIZE          = -Os -fshort-enums

# You should not have to change anything below here.
CC                = avr-gcc

# Override is only needed by avr-lib build system.
override CFLAGS   = -MMD -g -Wall -Wextra $(OPTIMIZE) -mmcu=$(MCU_TARGET)
override LDFLAGS  = -Wl,-Map,$(PROG).map,--relax -fwhole-program

OBJCOPY           = avr-objcopy
OBJDUMP           = avr-objdump
SIZE              = avr-size

# Main rule
all: $(PROG).elf lst text size

.PHONY: all

# Rules for maintenance
clean:
	rm -rf *.o *.d $(PROG).elf *.bak
	rm -rf *.lst *.map *.hex *.bin $(EXTRA_CLEAN_FILES)

.PHONY: clean

# Rules for building objects
-include *.d

$(PROG).elf: $(OBJS)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS)

size: $(PROG).elf
	@avr-size -C --mcu=$(MCU_TARGET) $^

# Rules for building the list file
lst: $(PROG).lst

%.lst: %.elf
	$(OBJDUMP) -h -S $< > $@

# Rules for building the .text rom images

text: hex

hex: $(PROG).hex

%.hex: %.elf
	$(OBJCOPY) -j .text -j .data -j .rodata -O ihex $< $@

# Rules for flashing
flash: hex
	avrdude  -c avrispmkII -p t9 -U flash:w:$(PROG).hex