realv210的编译脚本注释

#!/bin/bashCPU_JOB_NUM=$(grep processor /proc/cpuinfo | awk '{field=$NF};END{print field+1}')    #处理起数量CLIENT=$(whoami)                            #当前的用户ROOT_DIR=$(pwd)             #当前路径KERNEL_DIR=./kernel#SEC_PRODUCT='generic' #Enable for generic buildSEC_PRODUCT='smdkv210' #Enable for smdk build#Modify the below path suitably as per your requirementsOUT_DIR="$ROOT_DIR/out/target/product/$SEC_PRODUCT"   #输出目录OUT_HOSTBIN_DIR="$ROOT_DIR/out/host/linux-x86/bin"    #用到的命令目录function check_exit(){if [ $? != 0 ]thenexit $?fi}function build_android(){echoecho '[[[[[[[ Build android platform ]]]]]]]'echoSTART_TIME=`date +%s`              #获取系统时间if [ $SEC_PRODUCT = "generic" ]   #判断输出的目录，如果是默认的目录thenecho make -j$CPU_JOB_NUM   #输出提示echomake -j$CPU_JOB_NUM        #开始编译elseecho make -j$CPU_JOB_NUM PRODUCT-full_$SEC_PRODUCT-eng  #输出提示echomake -j$CPU_JOB_NUM PRODUCT-full_$SEC_PRODUCT-eng   #开始编译ficheck_exit END_TIME=`date +%s`                   #结束时间 let "ELAPSED_TIME=$END_TIME-$START_TIME"  #计算消耗时间echo "Total compile time is $ELAPSED_TIME seconds"}function make_uboot_img()             #编译u-boot文件{cd $OUT_DIR    #进入输出的文件目录echoecho '[[[[[[[ Make ramdisk image for u-boot ]]]]]]]'echo$OUT_HOSTBIN_DIR/mkyaffs2image root ramdisk-yaffs.img  check_exitechocd ../../../..}function make_fastboot_img(){echoecho '[[[[[[[ Make additional images for fastboot ]]]]]]]'echoif [ ! -f $KERNEL_DIR/arch/arm/boot/zImage ]thenecho "No zImage is found at $KERNEL_DIR/arch/arm/boot"echo '  Please set KERNEL_DIR if you want to make additional images'echo "  Ex.) export KERNEL_DIR=~ID/android_kernel_$SEC_PRODUCT"echoreturnfiecho 'boot.img ->' $OUT_DIRcp $KERNEL_DIR/arch/arm/boot/zImage $OUT_DIR/zImage$OUT_HOSTBIN_DIR/mkbootimg --kernel $OUT_DIR/zImage --ramdisk $OUT_DIR/ramdisk-uboot.img -o $OUT_DIR/boot.imgcheck_exitecho 'update.zip ->' $OUT_DIRzip -j $OUT_DIR/update.zip $OUT_DIR/android-info.txt $OUT_DIR/boot.img $OUT_DIR/system.imgcheck_exitecho}echoecho '                Build android for '$SEC_PRODUCT''echocase "$SEC_PRODUCT" in           #根据目录的不同，选择不同的编译过程smdkc110)build_androidmake_uboot_imgmake_fastboot_img;;smdkv210)build_androidmake_uboot_img#make_fastboot_img;;generic)build_androidmake_uboot_img;;*)echo "Please, set SEC_PRODUCT"echo "  export SEC_PRODUCT=smdkc100 or SEC_PRODUCT=smdkc110 or SEC_PRODUCT=smdkv210 or SEC_PRODUCT=smdk6440"echo "     or "echo "  export SEC_PRODUCT=generic"exit 1;;esacecho ok success !!!exit 0