80 lines
1.9 KiB
Makefile
80 lines
1.9 KiB
Makefile
###############################################################################
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# Makefile for the project $(PROJECT)
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###############################################################################
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## General Flags
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PROJECT = main
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MCU = atmega328p
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TARGET = $(PROJECT).elf
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CC = avr-gcc
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CPP = avr-g++
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## Options common to compile, link and assembly rules
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COMMON = -mmcu=$(MCU)
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## Compile options common for all C compilation units.
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CFLAGS += -mmcu=atmega328p -DF_CPU=16000000L -D__AVR__ -D__AVR_ATmega328P__ \
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-std=gnu99 -Os -DDEBUG -gdwarf-2 \
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-Wall -Wextra -Wformat=2 -pedantic
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CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d
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INC := -I /usr/avr/include
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## Assembly specific flags
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ASMFLAGS = $(COMMON)
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ASMFLAGS += $(CFLAGS)
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ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2
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## Linker flags
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LDFLAGS = $(COMMON)
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LDFLAGS += -Wl,-Map=$(PROJECT).map
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## Intel Hex file production flags
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HEX_FLASH_FLAGS = -R .eeprom -R .fuse -R .lock -R .signature
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HEX_EEPROM_FLAGS = -j .eeprom
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HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"
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HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0 --no-change-warnings
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## Objects that must be built in order to link
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OBJECTS = $(PROJECT).o
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## Objects explicitly added by the user
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LINKONLYOBJECTS =
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## Build
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all: $(TARGET) $(PROJECT).hex $(PROJECT).eep $(PROJECT).lss size
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## Compile
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$(PROJECT).o: ../$(PROJECT).c
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$(CC) $(INC) $(CFLAGS) -c $<
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##Link
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$(TARGET): $(OBJECTS)
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$(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET)
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%.hex: $(TARGET)
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avr-objcopy -O ihex $(HEX_FLASH_FLAGS) $< $@
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%.eep: $(TARGET)
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-avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0
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%.lss: $(TARGET)
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avr-objdump -h -S $< > $@
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size: ${TARGET}
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@echo
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@avr-size -C --mcu=${MCU} ${TARGET}
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## Clean target
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.PHONY: clean
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clean:
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-rm -rf $(OBJECTS) $(PROJECT).elf dep/* $(PROJECT).hex $(PROJECT).eep $(PROJECT).lss $(PROJECT).map
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## Other dependencies
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-include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*)
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