OpenHarmony-2.0-Canary 編譯構建流程

作者：亮子力 2021-06-28 09:38:50

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OpenHarmony-2.0-Canary

2.0版本的編譯發生了很大的變化，由hb命令，變成了build.sh。經過分析發現，build.sh也是調用各種的python腳本來進行構建。這樣看來1.1.0用json寫配置，用python的 hb 解析，再調用gn、ninja來執行編譯構建反而更簡單了。估計下個版本還會改，我估計會統一成hb命令。

所以這次先簡單分析下。

-x      #回顯參數和命令 
-v      #回顯執行的源碼 
打開 OpenHarmony\build\build_scripts 下的 build.sh、build_common.sh、build_ohos.sh、build_standard.sh、parse_params.sh 
將set -e 改為 set -exv 開啟調試模式

build.sh

加了調試參數，我們來分析下 build.sh 在編譯構建中做了什么。

# 各種判斷和獲取參數 
 
# preloader 一.預加載 
${PYTHON3} ${source_root_dir}/build/loader/preloader/preloader.py \ 
  --product-name ${product_name} \ 
  --source-root-dir ${source_root_dir} \ 
  --products-config-dir "productdefine/common/products" \ 
  --preloader-output-root-dir "out/build_configs" 
   
# 設置環境變量 
source ${source_root_dir}/out/build_configs/${product_name}/preloader/build.prop 
# source /home/bright/OpenHarmony/out/build_configs/Hi3516DV300/preloader/build.prop 
 
# call build 二.編譯構建 
${source_root_dir}/build/build_scripts/build_${system_type}.sh \ 
  --product-name ${product_name} \ 
  --device-name ${device_name} \ 
  --target-os ${target_os} \ 
  --target-cpu ${target_cpu} \ 
  ${build_params}

一、預加載

debug的方法，用單步調試來看看這個 preloader.py 的作用。

調試參數：

{ 
    // 使用 IntelliSense 了解相關屬性。  
    // 懸停以查看現有屬性的描述。 
    // 欲了解更多信息，請訪問: https://go.microsoft.com/fwlink/?linkid=830387 
    "version": "0.2.0", 
    "configurations": [ 
        { 
            "name": "preloader.py", 
            "type": "python", 
            "request": "launch", 
            "program": "./build/loader/preloader/preloader.py", 
            "console": "integratedTerminal", 
            "args": [ 
                "--product-name","Hi3516DV300", 
                "--source-root-dir","", 
                "--products-config-dir","productdefine/common/products", 
                "--preloader-output-root-dir","out/build_configs" 
            ], 
            "stopOnEntry": true 
        } 
    ] 
}

調用了2個python文件，Z:\OpenHarmony\build\loader\preloader\preloader.py 和 Z:\OpenHarmony\build\scripts\util\file_utils.py

這個函數有4個參數。

python3 build/loader/preloader/preloader.py \ 
    --product-name Hi3516DV300 \ 
    --source-root-dir "" \ 
    --products-config-dir productdefine/common/products \ 
    --preloader-output-root-dir out/build_configs 
 
Z:\OpenHarmony\build\loader\preloader\preloader.py:180 
# 建議斷點打在這，跳過import 
parser = argparse.ArgumentParser()

全部操作主要就是def _run(args):這一個函數

Z:\OpenHarmony\build\loader\preloader\preloader.py:133 
def _run(args): 
    # 忽略不重要的步驟，直接看核心部分 
     
    # 生成 out/build_configs/Hi3516DV300/preloader/parts.json 
    write_json_file(parts_info_file, parts_config_info) 
 
    # 獲取 OpenHarmony/build/loader/preloader/platforms.template 這個模板 
    platforms_template_file = _get_platform_template_file(args.source_root_dir) 
     
    # 復制 OpenHarmony\out\build_configs\standard_system\platforms.build 
    _copy_platforms_config(platforms_template_file, parts_info_file, 
                           platform_config_output_path) 
 
    _build_info_list = [] 
    build_info_file = os.path.join(product_info_output_path, 'build.prop') 
    for k, v in build_configs.items(): 
        _build_info_list.append('{}={}'.format(k, v)) 
     
    # 生成 out/build_configs/Hi3516DV300/preloader/build.prop 
    write_file(build_info_file, '\n'.join(_build_info_list))

簡單來說就是通過產品形態配置倉調取3個json文件+1個platforms.template，生成3個配置文件

產品形態配置倉調取3個json文件，具體可以參考：https://gitee.com/openharmony/productdefine_common

配置文件：

配置文件： 
productdefine/common 
├── base                         # 不同系統類型的最小系統，開發者不用配置，系統提供 
│   └── standard_system.json 
├── device                       # device配置，配置文件按照device name命名 
│   └── hi3516dv300.json 
└── products                     # 產品配置，配置文件按照product name命名 
    └── Hi3516DV300.json 
 
輸出文件： 
├── Hi3516DV300 
│   └── preloader 
│       ├── build.prop 
│       └── parts.json 
└── standard_system 
    └── platforms.build

來個更直觀的對比圖吧。

二、編譯構建 build_standard.sh

這個腳本有2個任務：

準備好參數執行gn、ninja構建命令。

將編譯好的文件打包成鏡像。

build/build_scripts/build_standard.sh --product-name Hi3516DV300 --device-name hi3516dv300 --target-os ohos --target-cpu arm 
# 換個姿勢，方便查看 
build_standard.sh  
    --product-name Hi3516DV300  
    --device-name hi3516dv300  
    --target-os ohos  
    --target-cpu arm

接下來先分析下 build_standard.sh

Z:\OpenHarmony\build\build_scripts\build_standard.sh 
 
# 忽略不重要的步驟，直接看核心部分 
 
function main() { 
  # build ohos 
  do_make_ohos  # 這個函數在 OpenHarmony\build\build_scripts\build_common.sh 文件中。 
  # 而最終這個函數會生成，下面這條構建腳本，主要的編譯工作都是由 build_ohos.sh 來完成的。 
+ build/build_scripts/build_ohos.sh device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true   
 
  ... ... 
 
  # build images 
  build/adapter/images/build_image.sh --device-name ${device_name} \ 
    --ohos-build-out-dir ${ohos_build_root_dir}/packages/phone 
  # 第二部分重要工作是生成鏡像。參考：2.【生成鏡像】 
+ build/adapter/images/build_image.sh --device-name hi3516dv300 --ohos-build-out-dir /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone 
}

1.build_ohos.sh【編譯構建】

這個腳本的結構就簡單了

參數初始化
執行編譯構建gn、ninjia
統計分析結果

build/build_scripts/build_ohos.sh  
    device_type=Hi3516DV300  
    target_os=ohos  
    target_cpu=arm  
    gn_args=is_standard_system=true 
 
# 忽略不重要的步驟，直接看核心部分 
 
main() 
{ 
    source ${BUILD_SCRIPT_DIR}/pre_process.sh 
    pre_process "$@" # 再執行a.參數初始化 
 
    source ${BUILD_SCRIPT_DIR}/make_main.sh 
    do_make "$@" # 再執行b.Gn和ninja的命令都是在這個腳本執行 
 
    source ${BUILD_SCRIPT_DIR}/post_process.sh 
    post_process "$@" # 再執行c.構建完成之后進行的收尾工作 
     
gn_args=is_standard_system=true 
    exit $RET 
} 
 
main "$@" 
================================================================================================================================ 
【參數設置】 
+ BIN_PATH=/home/bright/OpenHarmony/build/build_scripts 
+ BASE_HOME=/home/bright/OpenHarmony 
+ BUILD_SCRIPT_DIR=/home/bright/OpenHarmony/build/core/build_scripts 
 
【腳本執行】 
+ pre_process device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true 
+ main device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true 
+ post_process device_type=Hi3516DV300 target_os=ohos target_cpu=arm

a.pre_process.sh

對各種參數進行初始化

pre_process() 
{ 
    echo "pre_process" 
    case $(uname -s) in 
        Darwin) 
            HOST_DIR="darwin-x86" 
            HOST_OS="mac" 
            ;; 
        Linux) 
            HOST_DIR="linux-x86" 
            HOST_OS="linux" 
            ;; 
        *) 
            echo "Unsupported host platform: $(uname -s)" 
            RET=1 
            exit $RET 
    esac 
 
    export PATH=${BASE_HOME}/prebuilts/python/${HOST_DIR}/3.8.5/bin:${BASE_HOME}/prebuilts/build-tools/${HOST_DIR}/bin:$PATH 
    python --version 
 
    # 初始化了4個腳本,對參數進行初始化，這塊先不展開了，下個版本不改再來分析 
    source ${BUILD_SCRIPT_DIR}/init_parameters.sh # 給參數賦值 
    source ${BUILD_SCRIPT_DIR}/parse_cmdline.sh 
    source ${BUILD_SCRIPT_DIR}/common_fun.sh 
    source ${BUILD_SCRIPT_DIR}/trap_ctrlc.sh 
 
    init_parameter "$@" # 這個腳本沒啥好說的，就是參數賦值 
    parse_cmdline "$@"  # 解析命令行 
    # Trap SIGINT 
    trap "trap_ctrlc" 2 
 
    if [ "${PYCACHE_ENABLE}" == true ];then 
        source ${BUILD_SCRIPT_DIR}/set_pycache.sh 
        set_pycache 
    fi 
} 
================================================================================================================================ 
【生成環境變量】 
+ export PATH=/home/bright/OpenHarmony/prebuilts/python/linux-x86/3.8.5/bin:/home/bright/OpenHarmony/prebuilts/build-tools/linux-x86/bin:                                                                                                /home/bright/.local/bin:/home/bright/OpenHarmony/prebuilts/build-tools/common/nodejs/node-v12.18.4-linux-x64/bin:/home/bright/.local/bin:                                                                                                /home/bright/.local/bin:/home/bright/developtools:/home/bright/developtools/xpack-openocd-0.10.0-15/bin:/home/bright/developtools/gcc-lin                                                                                                aro-arm-linux-gnueabihf-4.9-2014.07_linux/bin:/home/bright/developtools/gcc_riscv32/bin:/home/bright/developtools/hc-gen:/home/bright/dev                                                                                                eloptools/llvm/bin:/home/bright/developtools/ninja:/home/bright/developtools/gn:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/                                                                                                bin:/usr/games:/usr/local/games:/snap/bin 
【執行腳本】 
+ init_parameter device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true 
+ parse_cmdline device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true 
+ trap trap_ctrlc 2 # trap運行 trap_ctrlc 腳本。TODO

b.make_main.sh丨gn、ninja

【重點】來看這個腳本，Gn和ninja的命令都是在這個腳本執行

參數： device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true

build\core\build_scripts\make_main.sh 
 
do_make() 
{ 
    TARGET_OUT_DIR=${BASE_HOME}/${OUT_DIR}/${TARGET_OS}-${TARGET_ARCH}-${BUILD_VARIANT} # 設置輸出目錄 
     
    # 忽略不重要的步驟，直接看核心部分 
 
    # prepare to save build log 
    LOG_FILE=${TARGET_OUT_DIR}/build.log 
    log_prepare $LOG_FILE # 生成編譯構建的log文件，OpenHarmony/out/ohos-arm-release/build.log 
    log "$@" 
 
    BEGIN_TIME=$(date "+%s") # 記錄當前時間 
 
    source ${BUILD_SCRIPT_DIR}/get_gn_parameters.sh 
    get_gn_parameters # 這個腳本用來獲取gn的參數 
 
    if [ "${SKIP_GN_PARSE}"x = falsex ]; then # 這里執行了gn命令，并將過程寫入log文件，參考下面【gn命令】 
        ${BUILD_TOOLS_DIR}/gn gen ${TARGET_OUT_DIR} \ 
            --args="target_os=\"${TARGET_OS}\" target_cpu=\"${TARGET_ARCH}\" is_debug=false \ 
            device_type=\"${DEVICE_TYPE}\" is_component_build=true use_custom_libcxx=true \ 
            ${GN_ARGS} ${TEST_BUILD_PARA_STRING}  ${IS_ASAN} \ 
            release_test_suite=${RELEASE_TEST_SUITE}" 2>&1 | tee -a $log 
 
        # 忽略部分代碼，到這里腳本調用了gn，這部分的內容是gn命令產生的，可以在OpenHarmony/out/ohos-arm-release/build.log中找到 
 
    log "Starting Ninja..." 
    NINJA_START_TIME=$(date +%s%N) 
    echo python version: $(python --version) 
    ninja_build_args="--source-root-dir ${BASE_HOME} --root-build-dir ${TARGET_OUT_DIR} \ # 設置ninja的參數 
            --build-target-name ${BUILD_TARGET_NAME}" 
    if [ "${TARGET_PLATFORM}" != "" ];then 
        ninja_build_args="$ninja_build_args --target-platform ${TARGET_PLATFORM}" 
    fi 
    # 在執行ninja命令前，還得調用一個python腳本，參考：【構建目標處理程序】 
    real_build_target=$(python ${BASE_HOME}/build/scripts/build_target_handler.py $ninja_build_args) 
    echo "build_target: "$real_build_target 
 
    if [ "${USE_NARUTO}"x = "truex" ];then 
        ${BUILD_TOOLS_DIR}/naruto -d keepdepfile -p ${BASE_HOME}/.naruto_cache -C ${TARGET_OUT_DIR} ${real_build_target} ${NINJA_ARGS} 2>&1 | tee -a $log 
    else 
        # 整個構建腳本最核心的部分，此時構建腳本全部交由ninja處理，打印編譯信息，將結果寫入log。參考：【ninja命令】 
        ${BUILD_TOOLS_DIR}/ninja -d keepdepfile -C ${TARGET_OUT_DIR} ${real_build_target} ${NINJA_ARGS} 2>&1 | tee -a $log 
    fi 
 
    # 忽略部分代碼 
} 
================================================================================================================================ 
【gn命令】 
+ /home/bright/OpenHarmony/prebuilts/build-tools/linux-x86/bin/gn gen /home/bright/OpenHarmony/out/ohos-arm-release '--args=target_os="ohos" target_cpu="arm" is_debug=false device_type="Hi3516DV300" is_component_build=true use_custom_libcxx=true is_standard_system=true release_test_suite=false' 
 
 
【ninja參數】 
+ ninja_build_args='--source-root-dir /home/bright/OpenHarmony --root-build-dir /home/bright/OpenHarmony/out/ohos-arm-release --build-target-name packages' 
 
【構建目標處理程序】 
+ python /home/bright/OpenHarmony/build/scripts/build_target_handler.py \ 
    --source-root-dir /home/bright/OpenHarmony \ 
    --root-build-dir /home/bright/OpenHarmony/out/ohos-arm-release \ 
    --build-target-name packages 
     
【ninja命令】 
+ ninja -d keepdepfile -C /home/bright/OpenHarmony/out/ohos-arm-release packages

c.post_process.sh

構建完成之后進行的收尾工作。

參數：device_type=Hi3516DV300 target_os=ohos target_cpu=arm gn_args=is_standard_system=true

build\core\build_scripts\post_process.sh 
 
# 忽略統計時間、pycache等部分代碼，總結下來就是執行了幾個python腳本 
 
【這個python腳本，生成 sorted_action_duration.txt 排序構建各個模塊的操作時間】 
+ python3 /home/bright/OpenHarmony/build/scripts/ninja2trace.py \ 
    --ninja-log /home/bright/OpenHarmony/out/ohos-arm-release/.ninja_log \ 
    --trace-file /home/bright/OpenHarmony/out/ohos-arm-release/build.trace \ 
    --ninja-start-time 1623461510200574308 \ 
    --duration-file /home/bright/OpenHarmony/out/ohos-arm-release/sorted_action_duration.txt 
 
【計算C目標重疊率統計】                 
+ python3 /home/bright/OpenHarmony/build/ohos/statistics/build_overlap_statistics.py \ 
    --build-out-dir /home/bright/OpenHarmony/out/ohos-arm-release \ 
    --subsystem-config-file /home/bright/OpenHarmony/build/subsystem_config.json \ 
    --root-source-dir /home/bright/OpenHarmony 
     
【獲取構建警告列表】 
+ python3 /home/bright/OpenHarmony/build/scripts/get_warnings.py \ 
    --build-log-file /home/bright/OpenHarmony/out/ohos-arm-release/build.log \ 
    --warning-out-file /home/bright/OpenHarmony/out/ohos-arm-release/packages/WarningList.txt

2.build_image.sh【生成鏡像】

這個腳本的主要工作

復制 root 目錄
生成鏡像

build/adapter/images/build_image.sh --device-name hi3516dv300 \ 
    --ohos-build-out-dir /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone 
     
    ... ... 
     
prepare_root # a.復制 root 目錄 
build_vendro_image # b.生成 vendr.image 
build_system_image # c.生成 system.image 
build_userdata_image # d.生成 userdata.image 
 
if [[ "${device_name}" == "hi3516dv300" ]]; then 
    source ${OHOS_ROOT_PATH}/build/adapter/images/updater/build_updater_image.sh 
fi

a.復制 root 目錄

function prepare_root() { 
    if [[ -d "${ohos_build_out_dir}/images/root" ]]; then 
        rm -rf ${ohos_build_out_dir}/images/root 
    fi 
    cp -arf prebuilts/aosp_prebuilt_libs/minisys/root ${ohos_build_out_dir}/images/ 
    local dir_list=(acct apex cache config data debug_ramdisk dev mnt oem proc sbin storage sys system vendor) 
    pushd ${ohos_build_out_dir}/images/root # 【pushd 把當前工作目錄壓棧，成為棧頂】 
    for _path in ${dir_list[@]} 
    do 
        if [[ ! -d "${_path}" ]]; then 
            mkdir ${_path}  # 【新建 dir_list 里的目錄】 
        fi 
    done 
    popd # 【popd 將目錄彈出目錄棧】 
} 
================================================================================================================================ 
【復制root過來】 
cp -arf prebuilts/aosp_prebuilt_libs/minisys/root /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/ 
【然后新建下面列表的文件夾】 
(acct apex cache config data debug_ramdisk dev mnt oem proc sbin storage sys system vendor)

b.生成 vendr.image

function build_vendro_image() { 
    cp -arf prebuilts/aosp_prebuilt_libs/minisys/vendor ${ohos_build_out_dir}/images/ 
    if [[ -d "${ohos_build_out_dir}/vendor" ]]; then 
        cp -arf ${ohos_build_out_dir}/vendor/* ${ohos_build_out_dir}/images/vendor/ 
    fi 
    # remove img 
    rm -rf ${ohos_build_out_dir}/images/vendor.img 
    # build system image 
    PATH=prebuilts/aosp_prebuilt_libs/host_tools/bin:$PATH prebuilts/aosp_prebuilt_libs/host_tools/releasetools/build_image.py \ 
        ${ohos_build_out_dir}/images/vendor \ 
        prebuilts/aosp_prebuilt_libs/minisys/vendor_image_info.txt \ 
        ${ohos_build_out_dir}/images/vendor.img \ 
        ${ohos_build_out_dir}/images/system    
    if [[ "${PIPESTATUS[0]}" -ne 0 ]]; then 
        echo "\033[31m  build: build vendor image error.\033[0m" 
        exit 1 
    fi 
    echo -e "\033[32m  build vendor image successful.\033[0m" 
} 
================================================================================================================================ 
【vendor的來源有兩個】 
# 1.prebuilts/aosp_prebuilt_libs/minisys/vendor 
# 2.out/ohos-arm-release/packages/phone/vendor 
+ cp -arf prebuilts/aosp_prebuilt_libs/minisys/vendor /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/ 
+ cp -arf /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/vendor/* /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/vendor/ 
【設置環境變量】 
PATH=prebuilts/aosp_prebuilt_libs/host_tools/bin:/home/bright/.local/bin:/home/bright/OpenHarmony/prebuilts/build-tools/common/nodejs/node-v12.18.4-linux-x64/bin:/home/bright/.local/bin:/home/bright/.local/bin:/home/bright/developtools:/home/bright/developtools/xpack-openocd-0.10.0-15/bin:/home/bright/developtools/gcc-linaro-arm-linux-gnueabihf-4.9-2014.07_linux/bin:/home/bright/developtools/gcc_riscv32/bin:/home/bright/developtools/hc-gen:/home/bright/developtools/llvm/bin:/home/bright/developtools/ninja:/home/bright/developtools/gn:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin 
【生成鏡像】 
+ prebuilts/aosp_prebuilt_libs/host_tools/releasetools/build_image.py \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/vendor \ 
    prebuilts/aosp_prebuilt_libs/minisys/vendor_image_info.txt \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/vendor.img \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system

c.生成 system.image

function _update_build_prop() { 
    local system_build_prop_file=${ohos_build_out_dir}/images/system/build.prop 
    local ohos_build_prop_file=${OHOS_ROOT_PATH}/build/adapter/makefiles/ohos_system.prop    
    if [[ -f "${ohos_build_prop_file}" ]] && [[ -f "${system_build_prop_file}" ]]; then 
        echo '' >> ${system_build_prop_file} 
        cat ${ohos_build_prop_file} >> ${system_build_prop_file} 
    fi 
} 
 
function build_system_image() { 
    if [[ ! -d "${ohos_build_out_dir}/images" ]]; then 
        mkdir ${ohos_build_out_dir}/images 
    fi 
    cp -arf prebuilts/aosp_prebuilt_libs/minisys/system ${ohos_build_out_dir}/images/ 
    cp -arf ${ohos_build_out_dir}/system/* ${ohos_build_out_dir}/images/system/     
    # update build.prop 
    _update_build_prop 
    # remove img 
    rm -rf ${ohos_build_out_dir}/images/system.img 
    # build system image 
    PATH=prebuilts/aosp_prebuilt_libs/host_tools/bin:$PATH prebuilts/aosp_prebuilt_libs/host_tools/releasetools/build_image.py \ 
        ${ohos_build_out_dir}/images/system \ 
        prebuilts/aosp_prebuilt_libs/minisys/system_image_info.txt \ 
        ${ohos_build_out_dir}/images/system.img \ 
        ${ohos_build_out_dir}/images/system         
    if [[ "${PIPESTATUS[0]}" -ne 0 ]]; then 
        echo "\033[31m  build: build system image error.\033[0m" 
        exit 1 
    fi 
    echo -e "\033[32m  build system image successful.\033[0m" 
} 
================================================================================================================================ 
【local命令用于在函數內定義局部變量】 
+ local system_build_prop_file=/home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system/build.prop 
+ local ohos_build_prop_file=/build/adapter/makefiles/ohos_system.prop 
【system的來源也有2個】 
# 1.prebuilts/aosp_prebuilt_libs/minisys/system 
# 2.out/ohos-arm-release/packages/phone/system 
cp -arf prebuilts/aosp_prebuilt_libs/minisys/system /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/ 
cp -arf /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/system/* /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system/     
【環境變量】 
PATH=prebuilts/aosp_prebuilt_libs/host_tools/bin:/home/bright/.local/bin:/home/bright/OpenHarmony/prebuilts/build-tools/common/nodejs/node-v12.18.4-linux-x64/bin:/home/bright/.local/bin:/home/bright/.local/bin:/home/bright/developtools:/home/bright/developtools/xpack-openocd-0.10.0-15/bin:/home/bright/developtools/gcc-linaro-arm-linux-gnueabihf-4.9-2014.07_linux/bin:/home/bright/developtools/gcc_riscv32/bin:/home/bright/developtools/hc-gen:/home/bright/developtools/llvm/bin:/home/bright/developtools/ninja:/home/bright/developtools/gn:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin 
【鏡像生成】 
prebuilts/aosp_prebuilt_libs/host_tools/releasetools/build_image.py \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system \ 
    prebuilts/aosp_prebuilt_libs/minisys/system_image_info.txt \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system.img \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system

d.生成 userdata.image

function build_userdata_image() { 
    if [[ -d "${ohos_build_out_dir}/images/data" ]]; then 
        rm -rf ${ohos_build_out_dir}/images/data 
    fi 
    mkdir ${ohos_build_out_dir}/images/data 
    # build userdat image 
    PATH=prebuilts/aosp_prebuilt_libs/host_tools/bin:$PATH prebuilts/aosp_prebuilt_libs/host_tools/releasetools/build_image.py \ 
        ${ohos_build_out_dir}/images/data \ 
        prebuilts/aosp_prebuilt_libs/minisys/userdata_image_info.txt \ 
        ${ohos_build_out_dir}/images/userdata.img \ 
        ${ohos_build_out_dir}/images/system         
    if [[ "${PIPESTATUS[0]}" -ne 0 ]]; then 
        echo "\033[31m  build: build userdata image error.\033[0m" 
        exit 1 
    fi 
    echo -e "\033[32m  build userdata image successful.\033[0m" 
} 
================================================================================================================================ 
【新建data目錄】 
out/ohos-arm-release/packages/phone/images/data 
【環境變量】 
PATH=prebuilts/aosp_prebuilt_libs/host_tools/bin:/home/bright/.local/bin:/home/bright/OpenHarmony/prebuilts/build-tools/common/nodejs/node-v12.18.4-linux-x64/bin:/home/bright/.local/bin:/home/bright/.local/bin:/home/bright/developtools:/home/bright/developtools/xpack-openocd-0.10.0-15/bin:/home/bright/developtools/gcc-linaro-arm-linux-gnueabihf-4.9-2014.07_linux/bin:/home/bright/developtools/gcc_riscv32/bin:/home/bright/developtools/hc-gen:/home/bright/developtools/llvm/bin:/home/bright/developtools/ninja:/home/bright/developtools/gn:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin 
【鏡像生成】 
prebuilts/aosp_prebuilt_libs/host_tools/releasetools/build_image.py \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/data \ 
    prebuilts/aosp_prebuilt_libs/minisys/userdata_image_info.txt \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/userdata.img \ 
    /home/bright/OpenHarmony/out/ohos-arm-release/packages/phone/images/system

3.關于build_image.py

這個python腳本多次被調用，如果下次版本升級還用它，我們再來深挖一下，這次先放他一馬。

properties_file 
build_image.py [輸入目錄] [屬性文件] [輸出文件] [輸出錄了] 
  in_dir = argv[0] 
  glob_dict_file = argv[1] 
  out_file = argv[2] 
  target_out = argv[3]