平台UBUNTU16.04sudo apt-get install build-essential

1、安装ninja    mkdir -p ~/ninja && cd ~/ninja
    git clone https://github.com/martine/ninja
    cd ninja
    python ./bootstrap.py
2、安装depot_tools    git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git    export PATH=$PATH:/path/to/depot_tools
3、获取WEBRTC源码以及编译    mkdir -p web_rtc && cd web_rtc
    export GYP_DEFINES="OS=linux"
    fetch --nohooks webrtc
    gclient sync
    cd src    ./build/install-build-deps.sh --arm
    ./build/linux/sysroot_scripts/install-sysroot.py --arch=arm
    gn gen out/Default --args='target_os="linux" target_cpu="arm"'    ninja -C out/Default