v8环境搭建

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v8

搭建v8的环境有以下两种方式:
1.官方的搭建方式可以参考:https://v8.dev/docs/build
2.使用github action将v8 source下载下来自己编译(也可以在远程编译好)
3.使用docker(docker是真的方便

官方的搭建方式

安装depot_tools

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#需要代理
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
echo 'export PATH=$PATH:"$HOME/depot_tools"' >> ~/.bashrc
bash

ninja

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#安装ninja 之前需要安装相关的配置文件re2c + libtool autoconf
git clone https://github.com/skvadrik/re2c.git re2c
cd re2c
mkdir -p m4
./autogen.sh && ./configure --prefix=/usr && make
sudo make install
re2c -v #验证结果
#现在就可以安装ninja了
git clone https://github.com/ninja-build/ninja.git && cd ninja
./configure.py --bootstrap
sudo cp ninja /usr/bin/
ninja --version
#验证结果

编译v8

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cd ..
fetch v8 #这里我两天两夜没下载成功......
cd v8
gclient sync #下载依赖，这里也很容易出问题
# 设置编译参数
tools/dev/v8gen.py x64.debug #或者gn gen out/x64.release --args='v8_monolithic=true v8_enable_object_print = true v8_enable_verify_heap=true v8_enable_disassembler=true v8_enable_backtrace=true'
# v8_monolithic=true命令是为了方便迁移(只用迁移d8就可以了，v8_enable_object_print方便release使用job等命令)
ninja -C out/x64.release d8

# 编译
ninja -C out.gn/x64.debug
./out.gn/x64.debug/d8 #能调用v8就可以了

使用tools/dev/v8gen.py x64.debug 报错时可试试安装如下依赖

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sudo apt install libpango1.0-dev
sudo apt install libcogl-pango-dev
sudo apt install libjpeg-dev
sudo apt install xz-utils
sudo apt install subversion

使用github action

项目地址:https://github.com/StarCross-Tech/v8-action
这上面的方法不久前，还可以用，现在用会出一点小问题(upload失败，不过只要稍微改一下yml文件就可以了
相关配置说明:

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env:
  PATCH_FLAG: false #默认下载最新的版本，
  COMMIT: 0 #版本号，PATCH_FLAG为true时，修改为对应的版本号
  DEPOT_UPLOAD: false #需要depot_tools就填true
  SRC_UPLOAD: true #需要v8 源码就填true
  BINARY_UPLOAD: false #暂时不支持

需要修改的部分

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- name: upload depot_tools
      if: env.DEPOT_UPLOAD == 'true' && !cancelled()
      run: |
        curl -fsSL git.io/file-transfer | sh
        ./transfer cow --block 2621440 -s -p 64 --no-progress depot_tools.zip 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"
   
    # upload v8.zip to cowtransfer
    - name: upload v8_src
      if: env.SRC_UPLOAD == 'true' && !cancelled()
      run: |
        curl -fsSL git.io/file-transfer | sh
        ./transfer cow --block 2621440 -s -p 64 --no-progress v8.7z.001 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"
        ./transfer cow --block 2621440 -s -p 64 --no-progress v8.7z.002 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"

将上面的cow 改为muse并且去掉–block 2621440(如果发生什么别的变化，对应修改就可以了)，此外关于runner最好使用ubuntu18.04

本地编译v8

本地编译v8的yml参考文件如下

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#===================================================
# Description: Build v8 enginer using GitHub Actions
# Author: t1an5t
#===================================================


name: BUILD v8

on:
  push:
    branches: [ master ]
  # watch:
  #   types: started

env:
  PATCH_FLAG: true
  COMMIT: 6dc88c191f5ecc5389dc26efa3ca0907faef3598
  DEPOT_UPLOAD: true
  SRC_UPLOAD: true
  BINARY_UPLOAD: false

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-18.04
    if: github.event.repository.owner.id == github.event.sender.id 	
    
    steps:
    - name: Checkout
      uses: actions/checkout@master
      
    # init ubuntu1804 environment
    - name: init env
      run: |
        sudo apt-get update
        sudo apt-get -y install pkg-config git subversion curl wget build-essential python xz-utils zip p7zip-full
    
    # get depot_tools
    - name: depot_tools
      run: |
        git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
        echo export PATH=\"\$PATH:`pwd`/depot_tools/\" >> ~/.bash_profile
    
    # fetch v8 source code
    - name: fetch v8
      run: |
        source ~/.bash_profile
        fetch v8
        cd v8
    
    # patch source code
    - name: patch v8
      if: env.PATCH_FLAG == 'true' && !cancelled()
      run: |
        cd v8
        git reset --hard $COMMIT
        cd ..
    
    - name: build v8
      run: |
        source ~/.bash_profile
        gclient sync -D

    # compress this file
    - name: zip depot_tools
      if: env.DEPOT_UPLOAD == 'true' && !cancelled()
      run: |
        zip -q -r depot_tools.zip depot_tools
        
    # 7zip v8 src
    - name: 7zip v8_src
      run: |
        zip -q -r v8.zip v8
        7z a v8.7z ./v8.zip -v2048m
    
    # upload depot_tools.zip to cowtransfer
    - name: upload depot_tools
      if: env.DEPOT_UPLOAD == 'true' && !cancelled()
      run: |
        curl -fsSL git.io/file-transfer | sh
        ./transfer muse -s -p 64 --no-progress depot_tools.zip 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"
   
    # upload v8.zip to cowtransfer
    - name: upload v8_src
      if: env.SRC_UPLOAD == 'true' && !cancelled()
      run: |
        ls -l
        curl -fsSL git.io/file-transfer | sh
        ./transfer muse -s -p 64 --no-progress v8.7z.001 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"
        ./transfer muse -s -p 64 --no-progress v8.7z.002 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"

远程编译

和本地编译的yml相比多了个get ninja以及v8编译部分

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#===================================================
# Description: Build v8 enginer using GitHub Actions
# Author: t1an5t
#===================================================

name: BUILD v8

on:
  push:
    branches: [ master ]
  # watch:
  #   types: started

env:
  PATCH_FLAG: true
  COMMIT: 0
  DEPOT_UPLOAD: true
  SRC_UPLOAD: true
  BINARY_UPLOAD: false

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-18.04
    if: github.event.repository.owner.id == github.event.sender.id 	
    
    steps:
    - name: Checkout
      uses: actions/checkout@master
      
    # init ubuntu1804 environment
    - name: init env
      run: |
        sudo apt-get update
        sudo apt-get -y install pkg-config git subversion curl wget build-essential python xz-utils zip p7zip-full
    
    # get depot_tools
    - name: depot_tools
      run: |
        git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
        echo export PATH=\"\$PATH:`pwd`/depot_tools/\" >> ~/.bash_profile
    
    # fetch v8 source code
    - name: fetch v8
      run: |
        source ~/.bash_profile
        fetch v8
        cd v8
    
    # patch source code
    - name: patch v8
      if: env.PATCH_FLAG == 'true' && !cancelled()
      run: |
        cd v8
        git reset --hard $COMMIT
        cd ..
    
    - name: get ninja
      run: |
        sudo apt-get install libtool autoconf
        git clone https://github.com/skvadrik/re2c.git re2c
        cd re2c
        mkdir -p m4
        ./autogen.sh && ./configure --prefix=/usr && make
        sudo make install
        re2c -v
        cd ..
        git clone https://github.com/ninja-build/ninja.git
        cd ninja && ./configure.py --bootstrap && cd ..
    
    - name: build v8
      run: |
        source ~/.bash_profile
        gclient sync -D
        cd v8
        ls -l
        tools/dev/v8gen.py x64.debug
        ninja -C out.gn/x64.debug
        cd ..
        
    # compress this file
    - name: zip depot_tools
      if: env.DEPOT_UPLOAD == 'true' && !cancelled()
      run: |
        zip -q -r depot_tools.zip depot_tools
        
    # 7zip v8 src
    - name: 7zip v8_src
      run: |
        zip -q -r v8.zip v8
        7z a v8.7z ./v8.zip -v2048m
    
    # upload depot_tools.zip to cowtransfer
    - name: upload depot_tools
      if: env.DEPOT_UPLOAD == 'true' && !cancelled()
      run: |
        curl -fsSL git.io/file-transfer | sh
        ./transfer muse -s -p 64 --no-progress depot_tools.zip 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"
   
    # upload v8.zip to cowtransfer
    - name: upload v8_src
      if: env.SRC_UPLOAD == 'true' && !cancelled()
      run: |
        ls -l
        curl -fsSL git.io/file-transfer | sh
        ./transfer muse -s -p 64 --no-progress v8.7z.001 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"
        ./transfer muse -s -p 64 --no-progress v8.7z.002 2>&1 | tee cowtransfer.log
        echo "::warning file=cowtransfer.com::$(cat cowtransfer.log | grep https)"

这里我编译的是x64.debug版本，可以根据情况调整build v8(github大概需要两个小时)，
当github action结束后，对应的文件有v8.zip.001，和v8.zip.002，以及depot_tools.zip
解压命令

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7zr e v8.7z.001
#然后本地会出现一个v8.zip，此时将v8解压到对应的目录就可以了

测试结果
avatar

github action + v8 + LTS

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name: BUILD and Complie v8

on:
  push:
    branches: [ master ]

env:
  PATCH_FLAG: false #给v8打上patch，不需要则false
  COMMIT: 9.3.345.16 #v8对应的版本号
  SRC_UPLOAD: true
  BINARY_UPLOAD: true

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-20.04
    if: github.event.repository.owner.id == github.event.sender.id  
    
    steps:
    - name: Checkout
      uses: actions/checkout@master
      
    # init ubuntu20.04 environment
    - name: init env 
      run: |
        sudo apt-get update
        sudo apt-get -y install pkg-config git subversion curl wget build-essential xz-utils zip p7zip-full python
        curl -fsSL git.io/file-transfer | sh
        ls -l
        
    # get depot_tools
    - name: depot_tools
      run: |
        git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
        echo export PATH=\"\$PATH:`pwd`/depot_tools/\" >> ~/.bash_profile
    
    # fetch v8 source code
    - name: fetch v8
      run: |
        source ~/.bash_profile
        fetch v8
        cd v8
        git reset --hard $COMMIT
        cd ..
    
    # patch source code
    - name: patch v8
      if: env.PATCH_FLAG == 'true' && !cancelled()
      run: | # git clone https://github.com/Archerber/tmp_patch.git下载patch内容
        cd v8
        git apply ../tmp_patch/*.patch #根据diff文件修改源码 diff function
        cd ..
    
    - name: setting ninja
      run: |
        sudo apt-get install libtool autoconf
        git clone https://github.com/skvadrik/re2c.git re2c
        cd re2c
        mkdir -p m4
        ./autogen.sh && ./configure --prefix=/usr && make
        sudo make install
        re2c -v
        cd ..
        git clone https://github.com/ninja-build/ninja.git
        cd ninja && ./configure.py --bootstrap && cd ..
    
    - name: Complie v8
      run: |
        source ~/.bash_profile
        gclient sync -D
        cd v8
        ls -l
        tools/dev/v8gen.py x64.debug
        ninja -C out.gn/x64.debug
        tools/dev/v8gen.py x64.release
        gn gen out/x64.release --args='v8_monolithic=true v8_use_external_startup_data=false is_component_build=false is_debug=true target_cpu="x64" use_goma=false goma_dir="None" v8_enable_backtrace=true v8_enable_disassembler=true v8_enable_object_print=true v8_enable_verify_heap=true'
        ninja -C out/x64.release d8
        
    # 7zip d8
    - name: 7zip d8
      if: env.BINARY_UPLOAD == 'true' && !cancelled()
      run: |
        zip d8.zip v8/out/x64.release/d8
        ls -l
        ./transfer gof v8/out/x64.release/d8
        ./transfer gof d8.zip

    - name: save src
      if: env.SRC_UPLOAD == 'true' && !cancelled()
      run: |
        zip -q -r v8.zip v8
        ./transfer gof v8.zip

使用docker集成的v8环境

项目地址:https://github.com/andreburgaud/docker-v8

调整gdb

可以将v8/tools下的gdb加载到本地gdb中，这样就可以使用job等v8官方的命令方便调试

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echo "/path/v8/tools/gdbinit" >> ~/.gdbinit

参考链接:
1.https://mem2019.github.io/jekyll/update/2019/07/18/V8-Env-Config.html
2.https://mp.weixin.qq.com/s?__biz=Mzg5NjEyMjA5OQ==&mid=2247484916&idx=1&sn=1d07443c7e3817bd4186c616598f4889&chksm=c004a868f773217e8577b404c3032eef5e135311adeab1976c8189c1c0e7fdba3d68ae6d3f16&scene=21#wechat_redirect
3.https://kiprey.github.io/2020/11/fetch-chromium/#%E5%9B%9B%E3%80%81v8%E4%BB%A3%E7%A0%81%E4%B8%8B%E6%8B%89%E5%8F%8A%E7%BC%96%E8%AF%91
4.https://v8.dev/docs/build
5.https://github.com/andreburgaud/docker-v8