Makefile for the project lab2

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General Flags

PROJECT = lab2

MCU = atmega16

TARGET = lab2.elf

CC = avr-gcc

CPP = avr-g++

Options common to compile, link and assembly rules

COMMON = -mmcu=$(MCU)

Compile options common for all C compilation units.

CFLAGS = $(COMMON)

CFLAGS += -Wall -gdwarf-2 -std=gnu99 -DF_CPU=8000000UL -O0 -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums

CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d

Assembly specific flags

ASMFLAGS = $(COMMON)

ASMFLAGS += $(CFLAGS)

ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2

Linker flags

LDFLAGS = $(COMMON)

LDFLAGS += -Wl,-Map=lab2.map

Intel Hex file production flags

HEX_FLASH_FLAGS = -R.eeprom -R.fuse -R.lock -R.signature

HEX_EEPROM_FLAGS = -j.eeprom

HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"

HEX_EEPROM_FLAGS += --change-section-lma.eeprom=0 --no-change-warnings

Objects that must be built in order to link

OBJECTS = lab2.o

Objects explicitly added by the user

LINKONLYOBJECTS =

Build

All: $(TARGET) lab2.hex lab2.eep lab2.lss size

Compile

Lab2.o:../lab2.c

$(CC) $(INCLUDES) $(CFLAGS) -c $<

Link

$(TARGET): $(OBJECTS)

$(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET)

%.hex: $(TARGET)

avr-objcopy -O ihex $(HEX_FLASH_FLAGS) $< $@

%.eep: $(TARGET)

Avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0

%.lss: $(TARGET)

avr-objdump -h -S $< > $@

size: ${TARGET}

Echo

@avr-size -C --mcu=${MCU} ${TARGET}

Clean target

PHONY: clean

clean:

Rm -rf $(OBJECTS) lab2.elf dep/* lab2.hex lab2.eep lab2.lss lab2.map