Debian9 上编译调试

主要参考Envoy官方的Bazel编译文档

1. 下载bazelisk-linux-amd64

    sudo wget -O /usr/local/bin/bazel https://github.com/bazelbuild/bazelisk/releases/latest/download/bazelisk-linux-amd64
    sudo chmod +x /usr/local/bin/bazel
   

2. 安装依赖

    sudo apt-get install \
       autoconf \
       automake \
       cmake \
       curl \
       libtool \
       make \
       ninja-build \
       patch \
       python3-pip \
       unzip \
       virtualenv
   

3. 下载llvm编译器

    md llvm // 新建目录
    wget https://github.com/llvm/llvm-project/releases/download/llvmorg-12.0.0/clang+llvm-12.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz
    
    tar xf clang+llvm-12.0.0-x86_64-linux-gnu-ubuntu-16.04.tar.xz
    
    mv clang+llvm-12.0.0-x86_64-linux-gnu-ubuntu-16.04 src // 修改名字
   
    #保存到环境变量 .zshrc （不保存也可以，下面脚本会写的user.bazelrc中去）
    export PATH=$PATH:/home/fanlv/llvm/src/bin
    export PATH=$PATH:/home/fanlv/llvm/src/include
    export PATH=$PATH:/home/fanlv/llvm/src/lib
    export PATH=$PATH:/home/fanlv/llvm/src/libexec
    export PATH=$PATH:/home/fanlv/llvm/src/share
   

4. Debian9.x 默认是python3.5，build过程需要用到Jinja2 - 3.0.1 必须要python 3.6以上版本，如果是3.6以上可以忽略这一步。

    apt-get autoremove python3.5 python3.5-dev
    sudo apt-get install dirmngr sudo gcc
    vim /etc/apt/sources.list
    deb http://mirrors.163.com/ubuntu/ bionic main
    sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3B4FE6ACC0B21F32
    echo 'APT::Default-Release "stable";' | sudo tee -a /etc/apt/apt.conf.d/00local
    sudo apt-get update
    sudo apt-get -t bionic install python3.6 python3.6-dev python3-distutils python3-pip
    ln -s /usr/bin/python3.6 /usr/bin/python3
   

5. clone envoy源码

    //当前commit b62dae29a5dd06b7f689899b26974d9567a98f0e
    git clone git@github.com:envoyproxy/envoy.git
   

6. 配置Bazel使用llvm编译器

    cd envoy
    bazel/setup_clang.sh /home/fanlv/llvm/src // 这个是llvm 文件位置
    echo "build --config=libc++" >> user.bazelrc
   
    #--config=libc++ means using clang + libc++
    #--config=clang means using clang + libstdc++
    #no config flag means using gcc + libstdc++
   

7. 开始编译

    cd envoy
    bazel build -c dbg --verbose_failures --verbose_explanations  --config=libc++ //source/exe:envoy-static
   

8. 动态库找不到错误报错

    python3 ../../tools/run.py ./bytecode_builtins_list_generator gen/builtins-generated/bytecodes-builtins-list.h
    ./bytecode_builtins_list_generator: error while loading shared libraries: libc++abi.so.1: cannot open shared object file: No such file or directory
   

   解决方式，更多参考这里

    ln -s /data00/home/fanlv/llvm/src/lib/* /usr/lib/
   

Mac 上编译调试

1. bazel安装同上一

2. 安装依赖

    brew install coreutils wget cmake libtool automake ninja clang-format autoconf aspell
    
   

3. 编译

    bazel build --explain=file.txt --verbose_explanations --verbose_failures //source/exe:envoy-static
    // 带符号表的
    bazel build -c dbg //source/exe:envoy-static --copt=-Wno-inconsistent-missing-override --spawn_strategy=standalone --genrule_strategy=standalone