全志A64 lichee编译脚本build.sh分析

lichee目录下的./build.sh脚本:
set -e #用于指此脚本里执行的命令返回值非0时，终止当前脚本的执行. buildroot/scripts/mkcommon.sh $@
#接着执行mkcommon.sh脚本，并把执行"./build.sh"附带的所有参数($@)传递过去，这里$@是空的.
buildroot/scripts/mkcommon.sh:
BR_SCRIPTS_DIR=`dirname $0` #$0表示第0个参数，即是"buildroot/scripts/mkcommon.sh"
#dirname命令用于获取路径, `dirname $0`获取得到"buildroot/scripts" . ${BR_SCRIPTS_DIR}
/shflags/shflags [-f .buildconfig ] && . .buildconfig
#如有.buildconfig文件，则导出里面的变量. 此文件是由"./build.sh config"生成的. . ${BR_SCRIPTS_DIR}
/mkcmd.sh#导出脚本里的下面function命令，以便在当前脚本里可以调用访问. mkboot build boot mkbr build
buildroot mkkernel build kernel mkrootfs build rootfsfor linux, dragonboard
mklichee build total lichee mkclean clean current board output mkdistclean
clean entires output mkpack pack firmwarefor lichee mkhelp show this message [
-f .buildconfig ] && . .buildconfig #如有.buildconfig文件，则导出下面的环境变量. 此文件用于指定编译的目标平台
export LICHEE_CHIP=sun50iw1p1 export LICHEE_PLATFORM=android export
LICHEE_SECURE=export LICHEE_KERN_VER=linux-3.10 export LICHEE_BOARD=p1 if [ "x$1
" = "xconfig" ] ; then #执行"./build.sh config"时触发 . ${BR_SCRIPTS_DIR}/mksetup.sh
#出现选择界面 exit $? #返回 elif [ "x$1" = "xpack" ] ; then #执行"./build.sh pack"时触发 if [
"x$2" = "x-d" ] ; then init_defconf
#init_defconf命令是由buildroot/scripts/mkcmd.sh里提供的 mkpack -d card0
#mkpack命令是由buildroot/scripts/mkcmd.sh里提供的 exit $? else init_defconf mkpack exit
$?fi elif [ "x$1" = "xpack_debug" ] ; then #执行"./build.sh pack_debug"时触发
init_defconf mkpack-d card0 exit $? elif [ "x$1" = "xpack_dump" ] ; then
#执行"./build.sh pack_dump"时触发 init_defconf mkpack -m dump exit $? elif [ "x$1" =
"xpack_secure" ] ; then #执行"./build.sh pack_secure"时触发 init_defconf mkpack -s
secureexit $? elif [ "x$1" = "xpack_debug_secure" ] ; then #执行"./build.sh
pack_debug_secure"时触发 init_defconf mkpack -s secure -d card0 exit $? elif [ "x$1
" = "xpack_prev_refurbish" ] ; then #执行"./build.sh pack_prev_refurbish"时触发
init_defconf mkpack-s secure -f prev_refurbish exit $? elif [ "x$1" =
"xpack_prvt" ] ; then #执行"./build.sh pack_prvt"时触发 init_defconf mkpack -f prvt
exit $? elif [ "x$1" = "xpack_nor" ] ;then #执行"./build.sh pack_nor"时触发
init_defconfif [ "x$2" = "xdebug" ] ; then mkpack -f spinor -d card0 else mkpack
-f spinor fi exit $? elif [ "x$1" = "xpack_erase" ] ; then #执行"./build.sh
pack_erase"时触发 init_defconf mkpack -f erase exit $? elif [ $# -eq 0 ] ; then
#执行"./build.sh"没任何参数时触发 init_defconf mklichee #编译内核及生成文件系统镜像 exit $? fi
“buildroot/scripts/mkcmd.sh” 556 行
function mklichee() { mk_info "----------------------------------------"
mk_info"build lichee ..." mk_info "chip: $LICHEE_CHIP" mk_info "platform:
$LICHEE_PLATFORM" mk_info "secure: $LICHEE_SECURE" mk_info "kernel:
$LICHEE_KERN_VER" mk_info "board: $LICHEE_BOARD" mk_info "output: out/
${LICHEE_CHIP}/${LICHEE_PLATFORM}/${LICHEE_BOARD}" #这几个环境变量由.buildconfig提供.
mk_info"----------------------------------------" check_env mkbr && mkkernel &&
mkrootfs#分别执行mkbr, mkkernel, mkrootfs命令 [ $? -ne 0 ] && return 1 mk_info
"----------------------------------------" mk_info "build lichee OK." mk_info
"----------------------------------------" } 脚本里所用的几个路径环境 LICHEE_TOP_DIR=`pwd`
#表示当前目录,即lichee目录下 LICHEE_BR_DIR=${LICHEE_TOP_DIR}/buildroot #表示./buildroot目录
LICHEE_KERN_DIR=${LICHEE_TOP_DIR}/${LICHEE_KERN_VER} #表示./linux-3.10目录
LICHEE_TOOLS_DIR=${LICHEE_TOP_DIR}/tools #表示./tools目录 LICHEE_OUT_DIR=
${LICHEE_TOP_DIR}/out #表示./out目录 function mkbr() { mk_info "build buildroot ..."
local build_script="scripts/build.sh" (cd ${LICHEE_BR_DIR} && [ -x
${build_script} ] && ./${build_script}) #cd ./buildroot
及执行./buildroot/scripts/build.sh脚本 #因选择编译的目标平台为android,这个脚本里只作了配置交叉编译器。没有编译uboot
[ $?-ne 0 ] && mk_error "build buildroot Failed" && return 1 mk_info "build
buildroot OK." } function mkkernel() { mk_info "build kernel ..." local
build_script="scripts/build.sh" prepare_toolchain # mark kernel .config belong
to which platform #因可以选择编译android, linux等几个不同的目标平台, 内核里用.config.mark文件记录编译目标平台.
#当选择的编译目标平台与上次编译的平台不同，则需要清除内核里已编译文件. local config_mark="${LICHEE_KERN_DIR}
/.config.mark" if [ -f ${config_mark} ] ; then if ! grep -q "${LICHEE_PLATFORM}"
${config_mark} ; then mk_info "clean last time build for different platform" (cd
${LICHEE_KERN_DIR} && [ -x ${build_script} ] && ./${build_script} "clean") echo
"${LICHEE_PLATFORM}" > ${config_mark} fi else echo "${LICHEE_PLATFORM}" >
${config_mark} fi (cd ${LICHEE_KERN_DIR} && [ -x ${build_script} ] && ./
${build_script}) #进入内核源码目录./linux-3.10下，执行里面的./script/build.sh脚本
#默认会编译内核，动态驱动模块和ramfs等. [ $? -ne 0 ] && mk_error "build kernel Failed" && return
1 mk_info "build kernel OK." } function mkrootfs() #因编译的目标平台为android,
所以这里基本什么都不做. { mk_info "build rootfs ..." if [ ${LICHEE_PLATFORM} = "linux" ] ;
then make O=${LICHEE_BR_OUT} -C ${LICHEE_BR_DIR} target-generic-getty-busybox [
$?-ne 0 ] && mk_error "build rootfs Failed" && return 1 make O=${LICHEE_BR_OUT}
-C${LICHEE_BR_DIR} target-finalize [ $? -ne 0 ] && mk_error "build rootfs
Failed" && return 1 make O=${LICHEE_BR_OUT} -C ${LICHEE_BR_DIR}
LICHEE_GEN_ROOTFS=y rootfs-ext4 [ $?-ne 0 ] && mk_error "build rootfs Failed" &&
return 1 cp ${LICHEE_BR_OUT}/images/rootfs.ext4 ${LICHEE_PLAT_OUT} if [ -f "
${LICHEE_BR_OUT}/images/rootfs.squashfs" ]; then cp ${LICHEE_BR_OUT}
/images/rootfs.squashfs${LICHEE_PLAT_OUT} fi if [ "x$PACK_TINY_ANDROID" =
"xtrue" ];then packtinyandroid fi elif [ ${LICHEE_PLATFORM} = "dragonboard" ] ;
then echo "Regenerating dragonboard Rootfs..." ( cd ${LICHEE_BR_DIR}
/target/dragonboard; \if [ ! -d "./rootfs" ]; then \ echo "extract dragonboard
rootfs.tar.gz"; \ tar zxf rootfs.tar.gz; \ fi ) tooldir_32=${LICHEE_BR_OUT}
/external-toolchain_32export PATH=${tooldir_32}/bin:$PATH export
LICHEE_TOOLCHAIN_PATH=${tooldir_32} mkdir -p ${LICHEE_BR_DIR}
/target/dragonboard/rootfs/lib/modules rm -rf${LICHEE_BR_DIR}
/target/dragonboard/rootfs/lib/modules/* cp -rf${LICHEE_KERN_DIR}
/output/lib/modules/*${LICHEE_BR_DIR}/target/dragonboard/rootfs/lib/modules/ (cd
${LICHEE_BR_DIR}/target/dragonboard; ./build.sh) cp ${LICHEE_BR_DIR}
/target/dragonboard/rootfs.ext4${LICHEE_PLAT_OUT} else mk_info "skip make
rootfs for${LICHEE_PLATFORM}" fi mk_info "build rootfs OK." }
内核源码编译脚本 linux-3.10/scripts/build.sh里的内核编译命令:
LICHEE_KDIR=`pwd` LICHEE_MOD_DIR=${LICHEE_KDIR}/output/lib/modules/
${KERNEL_VERSION} build_kernel() { echo "Building kernel" cd ${LICHEE_KDIR} rm
-rf output/echo "${LICHEE_MOD_DIR}" mkdir -p ${LICHEE_MOD_DIR} # We need to
copy rootfs files to compile kernel for linux image echo "lichee_chip =
$LICHEE_CHIP" if [ "${LICHEE_CHIP}" = "sun8iw10p1" ] || [ "${LICHEE_CHIP}" =
"sun8iw11p1" ]; then echo "cp rootfs_32bit.cpio.gz" cp -f rootfs_32bit.cpio.gz
output/rootfs.cpio.gzelse cp -f rootfs.cpio.gz output/
#复制rootfs.cpio.gz文件系统镜像到output目录 fi #exchange sdc0 and sdc2 in sun50iw1p1 for
dragonBoard card boot if [ "x${LICHEE_PLATFORM}" = "xdragonboard" -a "x
${LICHEE_CHIP}" = "xsun50iw1p1" ]; then #不成立 local
SYS_CONFIG_FILE=../tools/pack/chips/${LICHEE_CHIP}/configs/${LICHEE_BOARD}
/sys_config.fex local DTS_PATH=./arch/arm64/boot/dts/#sun50iw1p1_bak.dtsi means
the orginal dtsi if [ -f ${DTS_PATH}/sun50iw1p1_bak.dtsi ];then
#sun50iw1p1.dtsi that we use in fact rm -f ${DTS_PATH}/sun50iw1p1.dtsi mv
${DTS_PATH}/sun50iw1p1_bak.dtsi ${DTS_PATH}/sun50iw1p1.dtsi fi # if find
dragonboard_test=1 in sys_config.fex ,then will exchange sdc0 and sdc2 if [ -n
"`grep "dragonboard_test" $SYS_CONFIG_FILE | grep "1" | grep -v ";"`" ]; then cp
${DTS_PATH}/sun50iw1p1.dtsi ${DTS_PATH}/sun50iw1p1_bak.dtsi rm -f ${DTS_PATH}
/sun50iw1p1.dtsi cp${DTS_PATH}/sun50iw1p1_for_dragonboard.dtsi ${DTS_PATH}
/sun50iw1p1.dtsifi fi if [ ! -f .config ] ; then #如果没有内核的配置文件.config,
则使用arch/arm64/configs/sun50iw1p1smp_android_defconfig配置文件 printf
"\n\033[0;31;1mUsing default config${LICHEE_KERN_DEFCONF} ...\033[0m\n\n" cp
arch/${ARCH}/configs/${LICHEE_KERN_DEFCONF} .config fi if [ "x$SUNXI_CHECK" =
"x1" ];then SUNXI_SPARSE_CHECK=1 SUNXI_SMATCH_CHECK=1 SUNXI_STACK_CHECK=1 fi if
["x$SUNXI_SPARSE_CHECK" = "x" ] && [ "x$SUNXI_SMATCH_CHECK" = "x" ];then make
ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -j${LICHEE_JLEVEL} all modules else
if [ "x$SUNXI_SPARSE_CHECK" = "x1" ] && [ -f ../tools/codecheck/sparse/sparse ];
then echo "\n\033[0;31;1mBuilding Round for sparse check ${KERNEL_CFG}
...\033[0m\n\n" make clean make CHECK="../tools/codecheck/sparse/sparse" ARCH=
${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -j${LICHEE_JLEVEL} C=2 all modules 2>&1
|tee output/build_sparse.txt cat output/build_sparse.txt|egrep -w
'(warn|error|warning)' >output/warn_sparse.txt fi if [ "x$SUNXI_SMATCH_CHECK" =
"x1" ]&& [ -f ../tools/codecheck/smatch/smatch ];then echo
"\n\033[0;31;1mBuilding Round for smatch check${KERNEL_CFG}...\033[0m\n\n" make
clean make CHECK="../tools/codecheck/smatch/smatch --full-path --no-data
-p=kkernel" ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -j${LICHEE_JLEVEL} C=2
all modules2>&1|tee output/build_smatch.txt cat output/build_smatch.txt|egrep -w
'(warn|error|warning)' >output/warn_smatch.txt fi fi if [ "x$SUNXI_STACK_CHECK"
="x1" ];then make ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} -j${LICHEE_JLEVEL}
checkstack2>&1|tee output/warn_stack.txt fi update_kern_ver #The Image is
origin binary from vmlinux. if [ -f arch/${ARCH}/boot/Image ]; then cp -vf arch/
${ARCH}/boot/Image output/bImage fi if [ -f arch/${ARCH}/boot/zImage ] || [ -f
arch/${ARCH}/boot/uImage ]; then cp -vf arch/${ARCH}/boot/[zu]Image output/ fi
if [ -f arch/${ARCH}/boot/Image.gz ]; then cp -vf arch/${ARCH}/boot/Image.gz
output/fi cp .config output/ tar -jcf output/vmlinux.tar.bz2 vmlinux for file in
$(find drivers sound crypto block fs security net -name"*.ko"); do cp $file
${LICHEE_MOD_DIR} done cp -f Module.symvers ${LICHEE_MOD_DIR} }

• « 上一篇：如何对项目中大量批量操作进行优化提升项目性能（mybitis中sql优化）。
• » 下一篇：字符串类型