makefile

基于AVR单片机 MEGA16的温度采集源程序

###############################################################################
# Makefile for the project avr_ds18b20
###############################################################################

## General Flags
PROJECT = avr_ds18b20
MCU = atmega16
TARGET = avr_ds18b20.elf
CC = avr-gcc.exe

## 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 -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d 

## Assembly specific flags
ASMFLAGS = $(COMMON)
ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2

## Linker flags
LDFLAGS = $(COMMON)
LDFLAGS +=  -Wl,-Map=avr_ds18b20.map


## Intel Hex file production flags
HEX_FLASH_FLAGS = -R .eeprom

HEX_EEPROM_FLAGS = -j .eeprom
HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"
HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0


## Include Directories
INCLUDES = -I"D:\WinAVR\avr\include" 

## Library Directories
LIBDIRS = -L"D:\WinAVR\avr\lib" 

## Objects that must be built in order to link
OBJECTS = avr_ds18b20.o 

## Objects explicitly added by the user
LINKONLYOBJECTS = 

## Build
all: $(TARGET) avr_ds18b20.hex avr_ds18b20.eep avr_ds18b20.lss size

## Compile
avr_ds18b20.o: ../avr_ds18b20.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 $< $@

%.lss: $(TARGET)
	avr-objdump -h -S $< > $@

size: ${TARGET}
	@echo
	@sh avr-mem.sh ${TARGET} ${MCU}

## Clean target
.PHONY: clean
clean:
	-rm -rf $(OBJECTS) avr_ds18b20.elf dep/* avr_ds18b20.hex avr_ds18b20.eep avr_ds18b20.lss avr_ds18b20.map


## Other dependencies
-include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*)