makefile

AVR单片机有趣的展示

# Sample makefile (c) 2002-2003 Eric B. Weddington
# Released to the Public Domain

# Define directories.
    DIRAVR = c:/winavr
    DIRAVRBIN = $(DIRAVR)/bin
    DIRAVRUTILS = $(DIRAVR)/utils/bin
	DIRINC = .
    DIRLIB = $(DIRAVR)/avr/lib
	

# Define programs.
    SHELL = sh
    COMPILE = avr-gcc
    ASSEMBLE = avr-gcc -x assembler-with-cpp
    REMOVE = rm -f
    COPY = cp
	OBJCOPY	= avr-objcopy
    OBJDUMP = avr-objdump
    ELFCOFF = objtool
    HEXSIZE = @avr-size --target=$(FORMAT) $(TARGET).hex
    ELFSIZE = @avr-size $(TARGET).elf
	XSIZE = avr-sizex -l -t 5 $(TARGET).elf
	FINISH = @echo Errors: none
	BEGIN = @echo -------- begin --------
	END = @echo --------  end  --------
    BUILD_INIT = @build_init.bat
    BUILD_NO = @build_inc.bat


# MCU name
	MCU = atmega8

# Output format. Can be [srec|ihex].
    FORMAT = ihex

# Target file name (without extension).
	TARGET = ledflash

    

# List C source files here.
	SRC	= $(TARGET).c
	
# List Assembler source files here.
	ASRC = 


# Compiler flags.
    CPFLAGS = -g -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wall -Wstrict-prototypes -Wa,-ahlms=$(<:.c=.lst)

# Assembler flags.
    ASFLAGS = -Wa,-ahlms=$(<:.s=.lst), -gstabs 

# Linker flags (passed via GCC).
	LDFLAGS = -Wl,-Map=$(TARGET).map,--cref

# Additional library flags (-lm = math library).
	LIBFLAGS = -lm




# Define all project specific object files.
	OBJ	= $(SRC:.c=.o) $(ASRC:.s=.o) 

# Define all listing files.
	LST = $(ASRC:.s=.lst) $(SRC:.c=.lst)

# Add target processor to flags.
    CPFLAGS += -mmcu=$(MCU)
	ASFLAGS += -mmcu=$(MCU)
	LDFLAGS += -mmcu=$(MCU)
	XSIZE += --mcu=$(MCU) --flash 8192
  
# Default target.
.PHONY : all
all: begin build_init gccversion sizebefore $(TARGET).elf $(TARGET).hex $(TARGET).eep $(TARGET).lss $(TARGET).cof sizeafter xsize finished end



# Eye candy.
.PHONY : begin
begin:
	$(BEGIN)

.PHONY : finish
finished:
	$(FINISH)

.PHONY : end
end:
	$(END)


# Display size of file.
.PHONY : sizebefore
sizebefore:
	@echo Size before:
	-$(ELFSIZE)

.PHONY : sizeafter
sizeafter:
	@echo Size after:
	$(HEXSIZE)

.PHONY : xsize
xsize:
	$(XSIZE)      

.PHONY : build_init
build_init:
	$(BUILD_INIT)

.PHONY : build_no
build_no:
	$(BUILD_NO)


# Display compiler version information.
.PHONY : gccversion
gccversion : 
	$(COMPILE) --version


# Create AVROBJ format file from ELF output file. (Future release)
#%.obj: %.elf
#	$(OBJCOPY) -O avrobj -R .eeprom $< $@


# Create COFF format file from ELF output file.
%.cof: %.elf
	$(ELFCOFF) loadelf $< mapfile $*.map writecof $@


# Create final output files (.hex, .eep) from ELF output file.
%.hex: %.elf
	$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
	$(BUILD_NO)

%.eep: %.elf
	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 -O $(FORMAT) $< $@

# Create extended listing file from ELF output file.
%.lss: %.elf
	$(OBJDUMP) -h -S $< > $@



# Link: create ELF output file from object files.
.SECONDARY : $(TRG).elf
.PRECIOUS : $(OBJ)
%.elf: $(OBJ)
	$(COMPILE) $(LDFLAGS) $(OBJ) $(LIBFLAGS) --output $@


# Compile: create object files from C source files.
%.o : %.c
	$(COMPILE) -c $(CPFLAGS) -I$(DIRINC) $< -o $@


# Assemble: create object files from assembler files.
%.o : %.s
	$(ASSEMBLE) -c $(ASFLAGS) -I$(DIRINC) $< -o $@






# Target: clean project.
.PHONY : clean 
clean: begin clean_list finished end

.PHONY : clean_list
clean_list :
	$(REMOVE) $(TARGET).hex
	$(REMOVE) $(TARGET).eep
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).cof
	$(REMOVE) $(TARGET).elf
	$(REMOVE) $(TARGET).map
	$(REMOVE) $(TARGET).obj
	$(REMOVE) $(TARGET).a90
	$(REMOVE) $(TARGET).sym
	$(REMOVE) $(TARGET).lnk
	$(REMOVE) $(TARGET).lss
	$(REMOVE) $(OBJ)
	$(REMOVE) $(LST)
	$(REMOVE) $(SRC:.c=.s)
	

# Automatically generate C source code dependencies. (Code taken from the GNU make user manual.)
# Note that this will work with sh (bash) and sed that is shipped with WinAVR (see the SHELL variable defined above).
# This may not work with other shells or other seds.
%.d: %.c
	set -e; $(COMPILE) -MM $(CPFLAGS) $< \
	| sed 's/\($*\)\.o[ :]*/\1.o $@ : /g' > $@; \
	[ -s $@ ] || rm -f $@

include $(SRC:.c=.d)


# List assembly only source file dependencies here: