手把手教你写makefile【原创】

Makefile  $@, $^, $< 
$@  表示目标文件
$^  表示所有的依赖文件
$<  表示第一个依赖文件
$?  表示比目标还要新的依赖文件列表

方式一、

同一个目录下有多个.c  .h文件

CROSS_COMPILE=arm-none-linux-gnueabi-gcc
#CC=arm-none-linux-gnueabi-gcc   

TEST_RES := regDebug
objects = main.o uart.o

#下面这行表示依赖关系 表示所有的.o文件都是依赖于.c
#  $@是目标%.o
%.o:%.c
        arm-none-linux-gnueabi-gcc -c $< -o $@

$(TEST_RES): $(objects)
        #$(CC) $^ -o $@
        $(CROSS_COMPILE) $^ -o $@       

.PHONY: clean 

clean:
        rm -rf .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)

方式二、

同一个目录下有多个.c  .h文件

CC=arm-none-linux-gnueabi-gcc       

TEST_RES := regDebug
objects = main.o uart.o 

$(TEST_RES): $(objects)
        $(CC) $^ -o $@       

.PHONY: clean

clean:
        rm -rf .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)

方法三、

将编译生成的中间文件放在obj中，编译生成的可执行文件放在bin目录下

TEST_RES := bin/regDebug

objects = ./obj/main.o \
          ./obj/uart.o
./obj/%.o:%.c
        $(CC) -c $< -o $@

$(TEST_RES): $(objects)
        $(CC) $^ -o $@  

.PHONY: clean

clean:
        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)
        rm -rf  $(objects)

方法四、

用OBJDIR替换了路径

OBJDIR=obj

TEST_RES := bin/regDebug

objects = $(OBJDIR)/main.o \
          $(OBJDIR)/uart.o

$(OBJDIR)/%.o:%.c
        $(CC) -c $< -o $@

$(TEST_RES): $(objects)
        $(CC) $^ -o $@       

.PHONY: clean

clean:
        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)
        rm -rf  $(objects)

方法五、

将uart.c和uart.h放在package目录下

CC=arm-none-linux-gnueabi-gcc

INCLUDDIR=-I package

OBJDIR=obj

TEST_RES := bin/regDebug

objects = $(OBJDIR)/main.o \
          $(OBJDIR)/uart.o

$(OBJDIR)/%.o:%.c
        $(CC) $(INCLUDDIR) -c $< -o $@

$(OBJDIR)/%.o:./package/%.c
        $(CC) $(INCLUDDIR) -c $< -o $@

$(TEST_RES): $(objects)
        $(CC) $^ -o $@
      
.PHONY: clean 

clean:
        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)
        rm -rf  $(objects)

方法六、

CC=arm-none-linux-gnueabi-gcc

INCLUDDIR=-I package

OBJDIR=obj

TEST_RES := bin/regDebug

OBJECTS = $(OBJDIR)/main.o

-include ./package/obj.mk

$(OBJDIR)/%.o:%.c

        $(CC) $(INCLUDDIR) -c $< -o $@

$(OBJDIR)/%.o:./package/%.c

        $(CC) $(INCLUDDIR) -c $< -o $@

$(TEST_RES): $(OBJECTS)

        $(CC) $^ -o $@

.PHONY: clean

clean:
        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)
        rm -rf  $(OBJECTS)
 

 

 
obj.mk

OBJECTS += ./obj/uart.o

方法七、

把所有头文件都放在include目录下

CC=arm-none-linux-gnueabi-gcc

INCLUDDIR=-I include

OBJDIR=obj

TEST_RES := bin/regDebug

OBJECTS = $(OBJDIR)/main.o

-include ./package/obj.mk

$(OBJDIR)/%.o:%.c

        $(CC) $(INCLUDDIR) -c $< -o $@

$(OBJDIR)/%.o:./package/%.c

        $(CC) $(INCLUDDIR) -c $< -o $@

$(TEST_RES): $(OBJECTS)

        $(CC) $^ -o $@

.PHONY: clean

clean:
        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)
        rm -rf  $(OBJECTS)

方法八、

 

#CC=arm-none-linux-gnueabi-gcc

#INCLUDDIR=-I include

#OBJDIR=obj

-include rules.mk

TEST_RES := bin/regDebug


OBJECTS = $(OBJDIR)/main.o
 
-include ./package/obj.mk

$(OBJDIR)/%.o:%.c

        $(CC) $(INCLUDDIR) -c $< -o $@

$(OBJDIR)/%.o:./package/%.c

        $(CC) $(INCLUDDIR) -c $< -o $@

$(TEST_RES): $(OBJECTS)

        $(CC) $^ -o $@

.PHONY: clean

clean:
        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)
        rm -rf  $(OBJECTS)

rules.mk文件中

CC=arm-none-linux-gnueabi-gcc

INCLUDDIR=-I include

OBJDIR=obj

方法九、

目录结构如下

bin下为可执行文件

include 下为头文件

obj 下为编译的中间文件

package下为各种c文件

根目录下makefile

-include rules.mk

TEST_RES := bin/regDebug

OBJECTS = $(OBJDIR)/main.o

-include ./package/obj.mk

$(OBJDIR)/%.o:%.c

        $(CC) $(INCLUDDIR) -c $< -o $@ -std=gnu99

$(OBJDIR)/%.o:./package/%.c

        $(CC) $(INCLUDDIR) -c $< -o $@ -std=gnu99

$(TEST_RES): $(OBJECTS)

        $(CC) $^ -o $@ -lpthread -std=gnu99

        chmod a+x $@

.PHONY: clean

clean:

        rm -rf  .*.cmd *.o *.mod.c  .tmp_versions Module.symvers .Makefile.swp $(TEST_RES)

        rm -rf  $(OBJECTS)

根目录下 rules.mk：

CC=arm-none-linux-gnueabi-gcc

INCLUDDIR=-I include

OBJDIR=obj

package目录下 obj.mk

OBJECTS += ./obj/uart.o \

                    ./obj/Console.o \

                    ./obj/reg_data.o \

                    ./obj/func.o \

                    ./obj/run.o \

                    ./obj/revDataOne.o

方法十、

obj-m := driver.o
MAKEOPT := \
ARCH="arm" \
CROSS_COMPILE="arm-none-linux-gnueabi-"

ARM_LINUX_KERNEL := "/home/zhangbh/firmware/build_dir/linux-brcm5830_sxxx-prolin2/linux-3.6.5/"

PWD = $(shell pwd)

all:
$(MAKE) $(MAKEOPT) -C $(ARM_LINUX_KERNEL) M=$(PWD) modules

clean:
rm -rf .*.cmd *.o *.mod.c *.ko .tmp_versions Module.symvers .Makefile.swp modules.order

方法十一、

L_DIR=-L /home/zhangbh/new/firmware/staging_dir/target-arm-none-linux-gnueabi/usr/lib
I_DIR=-I /home/zhangbh/new/firmware/staging_dir/target-arm-none-linux-gnueabi/usr/include/

L_FLAG=-losal \
-lcbinder \
-ljpeg \
-lfreetype \
-lpng \
-lz \
-lpthread \
-lrt \
-lcrypt \
-lssl \
-lcrypto \
-lts \
-lprop \
-lcutils \
-lxui

VBS_t:VBS.c
arm-none-linux-gnueabi-gcc -o $@ $< $(I_DIR) $(L_DIR) $(L_FLAG)

方法十三、

obj-m:=demo.o

ARCH:=arm
CROSS_COMPILE:=/home/zhangbh/cygnus/3.5.4-RC2/iproc/buildroot/buildroot/host/usr/bin/
KERNEL_HEADERS:=/home/zhangbh/cygnus/3.5.4-RC2/iproc/kernel/linux-3.6.5

build:kernel_modules
kernel_modules:
make ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) -C $(KERNEL_HEADERS) M=$(CURDIR) modules

clean:
make ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) -C $(KERNEL_HEADERS) M=$(CURDIR) clean

方式十四、 驱动和应用反汇编调试 objdump

obj-m := kmod-demo1.o
MAKEOPT := ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
#CFLAGS := -O2 -DMODULE -D__KERNEL__ ${WARN} ${INCLUDE}
ARM_LINUX_KERNEL := /home/zhangbh/Prolin_os/si/Prolin/firmware_cygnus/build_dir/linux-brcm5830_sxxx-prolin2/linux-3.6.5
ccflags-y :=-g
PWD = $(shell pwd)

all:
$(MAKE) $(MAKEOPT) -C $(ARM_LINUX_KERNEL) M=$(PWD) modules

.PHONY: clean

clean:
rm -rf .*.cmd *.o *.mod.c *.ko .tmp_versions Module.symvers .Makefile.swp modules.order

info 可以用来在makefile中打印

include $(TOPDIR)/.config 
$(info tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt)
$(info $(CONFIG_ENABLE_AA))


include $(TOPDIR)/.config 
ifeq ($(CONFIG_ENABLE_PCI),y)
EXTRA_CFLAGS += -DCONFIG_ENABLE_PCI
endif
 

 ifeq ($(CONFIG_ENABLE_PCI),y)

EXTRA_CPPFLAGS += -DCONFIG_ENABLE_PCI
endif

 编译的时候可以在error时停下

34 #ifdef CONFIG_ENABLE_PCI
35 #error "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
36 printk("\r\n\r\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa===============\r\n\r\n");
37 #endif