makefile是什么？我就不多说了，网上资料挺多的。下面直接贴代码:

 

# Hey Emacs, this is a -*- makefile -*-
#
# WinARM makefile for the FreeRTOS-demo on LPC2138
# based in information from the FreeRTOS LPC2106 example
#
# by Martin Thomas, Kaiserslautern, Germany
# <eversmith@heizung-thomas.de>
#
# based on the WinAVR makefile written by Eric B. Weddington, J鰎g Wunsch, et al.
# Released to the Public Domain
# Please read the make user manual!
#
#
# On command line:
#
# make all = Make software.
#
# make clean = Clean out built project files.
#
# make program = Download the hex file to the device
#
# (TODO: make filename.s = Just compile filename.c into the assembler code only)
#
# To rebuild project do "make clean" then "make all".
#
# Changelog:
# - 17. Feb. 2005  - added thumb-interwork support (mth)
# - 28. Apr. 2005  - added C++ support (mth)
# - 29. Arp. 2005  - changed handling for lst-Filename (mth)
# -  1. Nov. 2005  - exception-vector placement options (mth)
# - 15. Nov. 2005  - added library-search-path (EXTRA_LIB...) (mth)
# -  2. Dec. 2005  - fixed ihex and binary file extensions (mth)
# - 22. Feb. 2006  - added AT91LIBNOWARN setting (mth)
# - 19. Apr. 2006  - option FLASH_TOOL (default lpc21isp); variable IMGEXT (mth)
# - 19. Mai. 2006  - USE_THUMB_MODE switch, ROM_RUN->RUN_FROM_ROM RAM_RUN->RUN_FROM_RAM
# - 10. Sep. 2006  - added FRQ_XTL and PLL_MUL settings by alexant.
# - 30. Sep. 2006  - added CODE_PROTECTION settings by alexant.

#FLASH_TOOL = UVISION
#FLASH_TOOL = OPENOCD

# MCU name and submodel
MCU      = arm7tdmi-s
SUBMDL   = lpc2142

#USE_THUMB_MODE = NO
USE_THUMB_MODE = YES

## Create ROM-Image (final)
RUN_MODE=RUN_FROM_ROM
## Create RAM-Image (debugging) - not used in this example
#RUN_MODE=RUN_FROM_RAM

# Configue code read protection
#CODE_PROTECTION = YES

# Processor frequency.
#     This will define a symbol, F_CPU, in all source code files equal to the
#     processor frequency. You can then use this symbol in your source code to
#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
#     automatically to create a 32-bit value in your source code.
#     Typical values are:
FRQ_XTL = 11059200

# Processor PLL Multiple.
# Note: Must >= 1
PLL_MUL = 2

# Target file name (without extension).
TARGET = rfwm-handset

#### FreeRTOS
RTOS_SRC_DIR   = freertos
RTOS_PORT_DIR  = $(RTOS_SRC_DIR)/portable/GCC/ARM7_LPC2000

# List C source files here. (C dependencies are automatically generated.)
# use file-extension c for "c-only"-files
SRC  = main.c

SRC += rtc/rtc.c
SRC += serial/serial.c
SRC += lcd/lcd_text.c lcd/lcd_graphic.c lcd/lcd_hardware.c
#### FreeRTOS
SRC += $(RTOS_SRC_DIR)/tasks.c
SRC += $(RTOS_SRC_DIR)/list.c
SRC += $(RTOS_SRC_DIR)/queue.c
SRC += $(RTOS_PORT_DIR)/heap_2.c
SRC += $(RTOS_PORT_DIR)/port.c

# List C source files here which must be compiled in ARM-Mode.
# use file-extension c for "c-only"-files
#### FreeRTOSSRCARM +=
SRCARM  = $(RTOS_PORT_DIR)/portISR.c
SRCARM += rtc/rtcISR.c
SRCARM += serial/serialISR.c

# List C++ source files here.
# use file-extension cpp for C++-files (use extension .cpp)
CPPSRC =

# List C++ source files here which must be compiled in ARM-Mode.
# use file-extension cpp for C++-files (use extension .cpp)
#CPPSRCARM = $(TARGET).cpp
CPPSRCARM =

# List Assembler source files here.
# Make them always end in a capital .S.  Files ending in a lowercase .s
# will not be considered source files but generated files (assembler
# output from the compiler), and will be deleted upon "make clean"!
# Even though the DOS/Win* filesystem matches both .s and .S the same,
# it will preserve the spelling of the filenames, and gcc itself does
# care about how the name is spelled on its command-line.
ASRC =

# List Assembler source files here which must be assembled in ARM-Mode..
ASRCARM  = startup.S

## Output format. (can be ihex or binary)
## (binary i.e. for openocd and SAM-BA, hex i.e. for lpc21isp and uVision)
FORMAT = ihex
#FORMAT = binary

# Optimization level, can be [0, 1, 2, 3, s].
# 0 = turn off optimization. s = optimize for size.
# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
OPT = s
#OPT = 0

# Debugging format.
# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.
# AVR (extended) COFF requires stabs, plus an avr-objcopy run.
#DEBUG = stabs
DEBUG = dwarf-2

# List any extra directories to look for include files here.
#     Each directory must be seperated by a space.
#### FreeRTOS
EXTRAINCDIRS  =  ./serial ./rtc ./rf ./lcd ./storage
EXTRAINCDIRS +=  $(RTOS_PORT_DIR)
EXTRAINCDIRS +=  $(RTOS_SRC_DIR)/include

# List any extra directories to look for library files here.
#     Each directory must be seperated by a space.
#EXTRA_LIBDIRS = ../arm7_efsl_0_2_4
EXTRA_LIBDIRS =

## Using the Atmel AT91_lib produces warning with
## the default warning-levels.
## yes - disable these warnings; no - keep default settings
#AT91LIBNOWARN = yes
AT91LIBNOWARN = no

# Compiler flag to set the C Standard level.
# c89   - "ANSI" C
# gnu89 - c89 plus GCC extensions
# c99   - ISO C99 standard (not yet fully implemented)
# gnu99 - c99 plus GCC extensions
CSTANDARD = -std=gnu99

# Place -D or -U options for C here
CDEFS =  -D$(RUN_MODE)
CDEFS += -DFRQ_XTL=$(FRQ_XTL)UL
CDEFS += -DPLL_MUL=$(PLL_MUL)
#### FreeRTOS
CDEFS += -DGCC_ARM7

# Place -I options here
CINCS =

# Place -D or -U options for ASM here
ADEFS =  -D$(RUN_MODE)
ADEFS += -DFRQ_XTL=$(FRQ_XTL)UL
ADEFS += -DPLL_MUL=$(PLL_MUL)

ifeq ($(CODE_PROTECTION),YES)
ADEFS += -DCODE_PROTECTION
endif

ifdef VECTOR_LOCATION
CDEFS += -D$(VECTOR_LOCATION)
ADEFS += -D$(VECTOR_LOCATION)
endif

CDEFS += -D__WinARM__
ADEFS += -D__WinARM__

ifeq ($(USE_THUMB_MODE),YES)
THUMB    = -mthumb
THUMB_IW = -mthumb-interwork
#### FreeRTOS
CDEFS   += -D THUMB_INTERWORK
endif

# Compiler flags.
#  -g*:          generate debugging information
#  -O*:          optimization level
#  -f...:        tuning, see GCC manual and avr-libc documentation
#  -Wall...:     warning level
#  -Wa,...:      tell GCC to pass this to the assembler.
#    -adhlns...: create assembler listing
#
# Flags for C and C++ (arm-elf-gcc/arm-elf-g++)
CFLAGS = -g$(DEBUG)
CFLAGS += $(CDEFS) $(CINCS)
CFLAGS += -O$(OPT)
CFLAGS += -Wall -Wextra  -Wimplicit -Wcast-align
CFLAGS +=  -Wswitch -Wpointer-arith
#-Wredundant-decls
CFLAGS +=  -Wreturn-type -Wshadow -Wunused 
CFLAGS += -Wbad-function-cast -Wsign-compare -Waggregate-return
CFLAGS += -Wa,-adhlns=$(subst $(suffix $<),.lst,$<)
CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

# flags only for C

#-Wnested-externs
CONLYFLAGS +=
CONLYFLAGS += $(CSTANDARD)

ifneq ($(AT91LIBNOWARN),yes)
#AT91-lib warnings with:
#CFLAGS += -Wcast-qual
#CONLYFLAGS += -Wmissing-prototypes
CONLYFLAGS += -Wstrict-prototypes
#CONLYFLAGS += -Wmissing-declarations
endif

# flags only for C++ (arm-elf-g++)
# CPPFLAGS = -fno-rtti -fno-exceptions
CPPFLAGS =

# Assembler flags.
#  -Wa,...:    tell GCC to pass this to the assembler.
#  -ahlns:     create listing
#  -g$(DEBUG): have the assembler create line number information
ASFLAGS = $(ADEFS) -Wa,-adhlns=$(<:.S=.lst),--g$(DEBUG)

#Additional libraries.

# Extra libraries
#    Each library-name must be seperated by a space.
#    To add libxyz.a, libabc.a and libefsl.a:
#    EXTRA_LIBS = xyz abc efsl
#EXTRA_LIBS = efsl
EXTRA_LIBS =

#Support for newlibc-lpc (file: libnewlibc-lpc.a)
#NEWLIBLPC = -lnewlib-lpc

MATH_LIB = -lm

# CPLUSPLUS_LIB = -lstdc++

# Linker flags.
#  -Wl,...:     tell GCC to pass this to linker.
#    -Map:      create map file
#    --cref:    add cross reference to  map file
LDFLAGS = -nostartfiles -Wl,-Map=$(TARGET).map,--cref
LDFLAGS += -lc
LDFLAGS += $(NEWLIBLPC) $(MATH_LIB)
LDFLAGS += -lc -lgcc
LDFLAGS += $(CPLUSPLUS_LIB)
LDFLAGS += $(patsubst %,-L%,$(EXTRA_LIBDIRS))
LDFLAGS += $(patsubst %,-l%,$(EXTRA_LIBS))

# Set Linker-Script Depending On Selected Memory and Controller
ifeq ($(RUN_MODE),RUN_FROM_RAM)
LDFLAGS +=-T$(SUBMDL)-RAM.ld
else
LDFLAGS +=-T$(SUBMDL)-ROM.ld
endif

# ---------------------------------------------------------------------------
# Flash-Programming support using lpc21isp by Martin Maurer
# only for Philips LPC and Analog ADuC ARMs
#
# Settings and variables:
#LPC21ISP = lpc21isp
LPC21ISP = lpc21isp
LPC21ISP_PORT = com1
LPC21ISP_BAUD = 57600
LPC21ISP_XTAL = 11059
LPC21ISP_FLASHFILE = $(TARGET).hex
# verbose output:
#LPC21ISP_DEBUG = -debug
# enter bootloader via RS232 DTR/RTS (only if hardware supports this
# feature - see Philips AppNote):
LPC21ISP_CONTROL = -control
# ---------------------------------------------------------------------------

# Define directories, if needed.
## DIRARM = c:/WinARM/
## DIRARMBIN = $(DIRAVR)/bin/
## DIRAVRUTILS = $(DIRAVR)/utils/bin/

# Define programs and commands.
SHELL = sh
CC = arm-elf-gcc
CPP = arm-elf-g++
OBJCOPY = arm-elf-objcopy
OBJDUMP = arm-elf-objdump
SIZE = arm-elf-size
NM = arm-elf-nm
REMOVE = rm -f
COPY = cp

# Define Messages
# English
MSG_ERRORS_NONE = Errors: none
MSG_BEGIN = "-------- begin (mode: $(RUN_MODE)) --------"
MSG_END = --------  end  --------
MSG_SIZE_BEFORE = Size before:
MSG_SIZE_AFTER = Size after:
MSG_FLASH = Creating load file for Flash:
MSG_EXTENDED_LISTING = Creating Extended Listing:
MSG_SYMBOL_TABLE = Creating Symbol Table:
MSG_LINKING = Linking:
MSG_COMPILING = Compiling C:
MSG_COMPILING_ARM = "Compiling C (ARM-only):"
MSG_COMPILINGCPP = Compiling C++:
MSG_COMPILINGCPP_ARM = "Compiling C++ (ARM-only):"
MSG_ASSEMBLING = Assembling:
MSG_ASSEMBLING_ARM = "Assembling (ARM-only):"
MSG_CLEANING = Cleaning project:
MSG_FORMATERROR = Can not handle output-format
MSG_LPC21_RESETREMINDER = You may have to bring the target in bootloader-mode now.

# Define all object files.
COBJ      = $(SRC:.c=.o)
AOBJ      = $(ASRC:.S=.o)
COBJARM   = $(SRCARM:.c=.o)
AOBJARM   = $(ASRCARM:.S=.o)
CPPOBJ    = $(CPPSRC:.cpp=.o)
CPPOBJARM = $(CPPSRCARM:.cpp=.o)

# Define all listing files.
LST = $(ASRC:.S=.lst) $(ASRCARM:.S=.lst) $(SRC:.c=.lst) $(SRCARM:.c=.lst)
LST += $(CPPSRC:.cpp=.lst) $(CPPSRCARM:.cpp=.lst)

# Compiler flags to generate dependency files.
### GENDEPFLAGS = -Wp,-M,-MP,-MT,$(*F).o,-MF,.dep/$(@F).d
GENDEPFLAGS = -MD -MP -MF .dep/$(@F).d

# Combine all necessary flags and optional flags.
# Add target processor to flags.
ALL_CFLAGS  = -mcpu=$(MCU) $(THUMB_IW) -I. $(CFLAGS) $(GENDEPFLAGS)
ALL_ASFLAGS = -mcpu=$(MCU) $(THUMB_IW) -I. -x assembler-with-cpp $(ASFLAGS)

# Default target.
all: begin gccversion sizebefore build sizeafter finished end

ifeq ($(FORMAT),ihex)
build: elf hex lss sym
hex: $(TARGET).hex
IMGEXT=hex
else
ifeq ($(FORMAT),binary)
build: elf bin lss sym
bin: $(TARGET).bin
IMGEXT=bin
else
$(error "$(MSG_FORMATERROR) $(FORMAT)")
endif
endif

elf: $(TARGET).elf
lss: $(TARGET).lss
sym: $(TARGET).sym

# Eye candy.
begin:
 @echo
 @echo $(MSG_BEGIN)

finished:
 @echo $(MSG_ERRORS_NONE)

end:
 @echo $(MSG_END)
 @echo

# Display size of file.
HEXSIZE = $(SIZE) --target=$(FORMAT) $(TARGET).hex
ELFSIZE = $(SIZE) -B $(TARGET).elf
sizebefore:
 @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_BEFORE); $(ELFSIZE); echo; fi

sizeafter:
 @if [ -f $(TARGET).elf ]; then echo; echo $(MSG_SIZE_AFTER); $(ELFSIZE); echo; fi

# Display compiler version information.
gccversion :
 @$(CC) --version

# Program the device.
ifeq ($(FLASH_TOOL),UVISION)
# Program the device with Keil's uVision (needs configured uVision-Workspace).
program: $(TARGET).$(IMGEXT)
 @echo
 @echo "Programming with uVision"
 C:\Keil\uv3\Uv3.exe -f uvisionflash.Uv2 -ouvisionflash.txt
else
ifeq ($(FLASH_TOOL),OPENOCD)
# Program the device with Dominic Rath's OPENOCD in "batch-mode", needs cfg and "reset-script".
program: $(TARGET).$(IMGEXT)
 @echo
 @echo "Programming with OPENOCD"
 C:\WinARM\utils\openocd\openocd_svn59\openocd.exe -f oocd_sam7_flash.cfg
else
# Program the device.  - lpc21isp will not work for SAM7
program: $(TARGET).$(IMGEXT)
 @echo
 @echo $(MSG_LPC21_RESETREMINDER)
 $(LPC21ISP) $(LPC21ISP_CONTROL) $(LPC21ISP_DEBUG) $(LPC21ISP_FLASHFILE) $(LPC21ISP_PORT) $(LPC21ISP_BAUD) $(LPC21ISP_XTAL)
endif
endif

# Create final output file (.hex) from ELF output file.
%.hex: %.elf
 @echo
 @echo $(MSG_FLASH) $@
 $(OBJCOPY) -O $(FORMAT) $< $@
 
# Create final output file (.bin) from ELF output file.
%.bin: %.elf
 @echo
 @echo $(MSG_FLASH) $@
 $(OBJCOPY) -O $(FORMAT) $< $@

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

# Create a symbol table from ELF output file.
%.sym: %.elf
 @echo
 @echo $(MSG_SYMBOL_TABLE) $@
 $(NM) -n $< > $@

# Link: create ELF output file from object files.
.SECONDARY : $(TARGET).elf
.PRECIOUS : $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) $(CPPOBJ) $(CPPOBJARM)
%.elf:  $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) $(CPPOBJ) $(CPPOBJARM)
 @echo
 @echo $(MSG_LINKING) $@
 $(CC) $(THUMB) $(ALL_CFLAGS) $(AOBJARM) $(AOBJ) $(COBJARM) $(COBJ) $(CPPOBJ) $(CPPOBJARM) --output $@ $(LDFLAGS)

# Compile: create object files from C source files. ARM/Thumb
$(COBJ) : %.o : %.c
 @echo
 @echo $(MSG_COMPILING) $<
 $(CC) -c $(THUMB) $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@

# Compile: create object files from C source files. ARM-only
$(COBJARM) : %.o : %.c
 @echo
 @echo $(MSG_COMPILING_ARM) $<
 $(CC) -c $(ALL_CFLAGS) $(CONLYFLAGS) $< -o $@

# Compile: create object files from C++ source files. ARM/Thumb
$(CPPOBJ) : %.o : %.cpp
 @echo
 @echo $(MSG_COMPILINGCPP) $<
 $(CPP) -c $(THUMB) $(ALL_CFLAGS) $(CPPFLAGS) $< -o $@

# Compile: create object files from C++ source files. ARM-only
$(CPPOBJARM) : %.o : %.cpp
 @echo
 @echo $(MSG_COMPILINGCPP_ARM) $<
 $(CPP) -c $(ALL_CFLAGS) $(CPPFLAGS) $< -o $@

# Compile: create assembler files from C source files. ARM/Thumb
## does not work - TODO - hints welcome
##$(COBJ) : %.s : %.c
## $(CC) $(THUMB) -S $(ALL_CFLAGS) $< -o $@

# Assemble: create object files from assembler source files. ARM/Thumb
$(AOBJ) : %.o : %.S
 @echo
 @echo $(MSG_ASSEMBLING) $<
 $(CC) -c $(THUMB) $(ALL_ASFLAGS) $< -o $@

# Assemble: create object files from assembler source files. ARM-only
$(AOBJARM) : %.o : %.S
 @echo
 @echo $(MSG_ASSEMBLING_ARM) $<
 $(CC) -c $(ALL_ASFLAGS) $< -o $@

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

clean_list :
 @echo
 @echo $(MSG_CLEANING)
 $(REMOVE) ../Common_WinARM/$(TARGET).hex
 $(REMOVE) $(TARGET).hex
 $(REMOVE) $(TARGET).bin
 $(REMOVE) $(TARGET).obj
 $(REMOVE) $(TARGET).elf
 $(REMOVE) $(TARGET).map
 $(REMOVE) $(TARGET).obj
 $(REMOVE) $(TARGET).a90
 $(REMOVE) $(TARGET).sym
 $(REMOVE) $(TARGET).lnk
 $(REMOVE) $(TARGET).lss
 $(REMOVE) $(COBJ)
 $(REMOVE) $(CPPOBJ)
 $(REMOVE) $(AOBJ)
 $(REMOVE) $(COBJARM)
 $(REMOVE) $(CPPOBJARM)
 $(REMOVE) $(AOBJARM)
 $(REMOVE) $(LST)
 $(REMOVE) $(SRC:.c=.s)
 $(REMOVE) $(SRC:.c=.d)
 $(REMOVE) $(SRCARM:.c=.s)
 $(REMOVE) $(SRCARM:.c=.d)
 $(REMOVE) $(CPPSRC:.cpp=.s)
 $(REMOVE) $(CPPSRC:.cpp=.d)
 $(REMOVE) $(CPPSRCARM:.cpp=.s)
 $(REMOVE) $(CPPSRCARM:.cpp=.d)
 $(REMOVE) .dep/*

# Include the dependency files.
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)

# Listing of phony targets.
.PHONY : all begin finish end sizebefore sizeafter gccversion \
build elf hex bin lss sym clean clean_list program