Linux kernel 编译方法大全记录
一、这是一个我自己写的自动make脚本：
#!/bin/sh
export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-
export CHEN_DTB="chenfl.dtb"
if [ 1 -eq $# ]; then
if [ $1 = "dtb" ]; then
make -j2 $CHEN_DTB O=out
cp ~/am335x/kernel4.4.12/out/arch/arm/boot/dts/am335x-chenfl.dtb $CHEN_PATH -rf
# cp ~/am335x/kernel4.4.12/out/arch/arm/boot/dts/am335x-sbc7109.dtb $CHEN_PATH -rf
sync
echo "Copy dts over ...
"
elif [ $1 = "defconfig" ]; then
make -j2 aplex_sbc7109_defconfig O=out
echo "Use aplex_sbc7109_defconfig over ...
"
elif [ $1 = "menuconfig" ]; then
make -j2 $1 O=out
elif [ $1 = "zImage" ]; then
make -j2 $1 O=out
cp ~/am335x/kernel4.4.12/out/arch/arm/boot/zImage $CHEN_PATH -rf
sync
echo "Copy kernel zImage to myself file over ...
"
elif [ $1 = "all" ]; then
make -j2 $1 O=out
cp ~/am335x/kernel4.4.12/out/arch/arm/boot/zImage $CHEN_PATH -rf
cp ~/am335x/kernel4.4.12/out/arch/arm/boot/dts/am335x-sbc7109.dtb $CHEN_PATH -rf
sync
echo "Copy kernel image and dts over ...
"
elif [ $1 = "savedefconfig" ]; then
make $1 O=out
echo "Save .config to defconfig over ...
"
elif [ $1 = "clean" ]; then
make $1 O=out
echo "Clean out over ...
"
elif [ $1 = "distclean" ]; then
make $1 O=out
echo "Distclean over ...
"
elif [ $1 = "help" ]; then
make $1
else
echo " "
echo "You can following command to do the thing you want to do..."
echo "./remake dtb -- Only cross-complie your device tree table"
echo "./remake defconfig -- Only configure your defconfig"
echo "./remake menuconfig -- Only configure your configuration"
echo "./remake zImage -- Only cross-complie your Linux kernel zImage "
echo "./remake all -- Cross-complie kernel and dts"
echo "./remake savedefconfig -- Save your .config as defconfig "
echo "./remake clean -- Clean your output file"
echo "./remake distclean -- Deep clean your output file"
echo "./remake help -- Check help infomation "
fi
else
echo " "
echo "You can following command to do the thing you want to do..."
echo "./remake dtb -- Only cross-complie your device tree table"
echo "./remake defconfig -- Only configure your defconfig"
echo "./remake menuconfig -- Only configure your configuration"
echo "./remake zImage -- Only cross-complie your Linux kernel zImage "
echo "./remake all -- Cross-complie kernel and dts"
echo "./remake savedefconfig -- Save your .config as defconfig "
echo "./remake clean -- Clean your output file"
echo "./remake distclean -- Deep clean your output file"
echo "./remake help -- Check help infomation "
fi
二、当你指定ARCH=arm 之后，如下命令运行，则会出现arm相关kernel的help信息。
make ARCH=arm help
这里面完全介绍了有关arm kernel make的帮助信息。
三、挑几个重点的讲解一下。
编译的时候，首先, 指定芯片的架构以及交叉编译器前缀。
export ARCH=arm
export CROSS_COMPILE=arm-linux-gnueabihf-
make clean
除了保存config文件以及构建外围模块必要的文件其他的全部清除。
make mrproper
清理全部生成的文件+config文件+不同的备份文件
make distclean
clean + mrproper , 彻底的清理
执行完上面的步骤之后。
选择一个自己的产品参考的defconfig
文件在arch/arm/configs/ 里面，这里面全部都是你可以选择的defconfig
例如：
make omap2plus_defconfig O=out
O 的指定是指output file 的意思，此时会在out文件夹下生成.config 文件。
当然，你应该还有一些想要添加的，我这里直接使用menuconfig进行配置
make menuconfig O=out
配置好了，你想要保存.config文件为自己的配置的一个备份。
make savedefconfig O=out
这时在out文件夹下就会有一个defconfig文件
当所有的都配置好了，现在，你想编译自己的设备树chenfl.dts
make -j2 chenfl.dtb O=out
你想编译自己的镜像zImage
make -j2 zImage O=out
你想编译自己的模块
make -j2 modules O=out
你想编译所有的东西
make -j2 all O=out
好了，所有常用的make功能介绍完毕。
zImage 在out/arch/arm/boot/zImage
chenfl.dtb 在out/arch/arm/boot/dts/chenfl.dtb
defconfig 你可以复制到arm/arch/configs/ 里面，后缀必须是defconfig
不正望指出谢谢。