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AVR-GCC Makefile文件

2010-05-25 12:56:19| 分类： 嵌入式|字号 订阅

# 这是一个Makefile

#---------------------------------------------------------------------------- # 作者：刘光 # 学校：南开大学 #日期：2010. 5.25

#---------------------------------------------------------------------------- # 可执行的make命令 # make all = Make software. # 编译文件

# make clean = Clean out built project files. #清除目标文件

# make coff = Convert ELF to AVR COFF. #转换ELF文件为AVR COFF

# make extcoff = Convert ELF to AVR Extended COFF. #转换ELF文件为AVR 扩展COFF

# make program = Download the hex file to the device, using avrdude. # 下载intel hex文件到AVR单片机

# make debug = Start either simulavr or avarice as specified for debugging, # with avr-gdb or avr-insight as the front end for debugging. #开始debug调试

# make filename.s = Just compile filename.c into the assembler code only. #编译*.c文件到汇编文件

# make filename.i = Create a preprocessed source file for use in submitting # bug reports to the GCC project. #编译产生一个预编译文件

# To rebuild project do \

# rebuild工程，需要首先执行“make clean”，然后执行“make all” #----------------------------------------------------------------------------

# MCU name

# 选择嵌入式AVR单片机型号 MCU = atmega128

# Processor frequency.

#设置嵌入式AVR单片机工作频率

# 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: # F_CPU = 1000000 # F_CPU = 1843200 # F_CPU = 2000000 # F_CPU = 3686400 # F_CPU = 4000000 # F_CPU = 7372800 # F_CPU = 8000000 # F_CPU = 11059200 # F_CPU = 14745600 # F_CPU = 16000000 # F_CPU = 18432000 # F_CPU = 20000000 F_CPU = 7372800

# Output format. (can be srec, ihex, binary) #设置目标文件输出格式可以为srec，ihex，binary FORMAT = ihex

# Target file name (without extension). #目标文件名 TARGET = main

# Object files directory #目标文件目录

# To put object files in current directory, use a dot (.), do NOT make # this an empty or blank macro! OBJDIR = .

# List C source files here. (C dependencies are automatically generated.) #列出所有*.c文件 SRC = $(TARGET).c SRC += radiocontrol.c SRC += led.c SRC += fun.c SRC += physical.c SRC += cc1000.c

# List C++ source files here. (C dependencies are automatically generated.) #列出所有*.cpp文件 CPPSRC =

# List Assembler source files here. #列出所有*.c文件

# 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 \# 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 =

# Optimization level, can be [0, 1, 2, 3, s].

# 设置编译优化级别，优化级别可以为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

# Debugging format. # 设置debug模式

# Native formats for AVR-GCC's -g are dwarf-2 [default] or stabs. # AVR Studio 4.10 requires dwarf-2.

# AVR [Extended] COFF format requires stabs, plus an avr-objcopy run. DEBUG = dwarf-2

# List any extra directories to look for include files here. # 列出所有可供查找的头文件目录

# Each directory must be seperated by a space. # Use forward slashes for directory separators. # For a directory that has spaces, enclose it in quotes. EXTRAINCDIRS =

# Compiler flag to set the C Standard level. # 设置c语言标准 # c89 = \

# 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 here for C sources #为*.c语言添加-D或者-U选项 CDEFS = -DF_CPU=$(F_CPU)UL

# Place -D or -U options here for ASM sources #为*.s语言添加-D或者-U选项 ADEFS = -DF_CPU=$(F_CPU)

# Place -D or -U options here for C++ sources

#为*.cpp语言添加-D或者-U选项 CPPDEFS = -DF_CPU=$(F_CPU)UL #CPPDEFS += -D__STDC_LIMIT_MACROS #CPPDEFS += -D__STDC_CONSTANT_MACROS

#---------------- Compiler Options C ---------------- # C语言编译选项

# -g*: generate debugging information # 产生debug信息

# -O*: optimization level # 设置优化级别

# -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 CFLAGS = -g$(DEBUG) CFLAGS += $(CDEFS) CFLAGS += -O$(OPT) CFLAGS += -funsigned-char CFLAGS += -funsigned-bitfields CFLAGS += -fpack-struct CFLAGS += -fshort-enums CFLAGS += -Wall

CFLAGS += -Wstrict-prototypes #CFLAGS += -mshort-calls #CFLAGS += -fno-unit-at-a-time #CFLAGS += -Wundef

#CFLAGS += -Wunreachable-code #CFLAGS += -Wsign-compare

CFLAGS += -Wa,-adhlns=$(<:%.c=$(OBJDIR)/%.lst) CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS)) CFLAGS += $(CSTANDARD)

#---------------- Compiler Options C++ ----------------