windows下编译WebRTC源码并运行官方demo

一、环境

win10操作系统，并装有vs2019、windows sdk、git等常规开发软件。最好装上python，我用的版本是2.7(整个过程都不需要梯子，这是国内公司提供的仓库)

二、下载源码并编译

打开windows cmd命令行。

//切换到webrtc的下载目录，自己新建的文件夹
cd C:\webrtc
set WINDOWSSDKDIR=C:\Program Files (x86)\Windows Kits\10
set GYP_MSVS_OVERRIDE_PATH=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community

//下面是git的相关配置，直接复制到cmd命令行即可

git config --global url.http://120.92.49.206:3232/chromiumsrc/webrtc.git.insteadOf https://chromium.googlesource.com/external/webrtc.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/base.git.insteadOf https://chromium.googlesource.com/chromium/src/base
git config --global url.http://120.92.49.206:3232/chromiumsrc/build.git.insteadOf https://chromium.googlesource.com/chromium/src/build
git config --global url.http://120.92.49.206:3232/chromiumsrc/buildtools.git.insteadOf https://chromium.googlesource.com/chromium/src/buildtools
git config --global url.http://120.92.49.206:3232/chromiumsrc/gradle.git.insteadOf https://chromium.googlesource.com/external/github.com/gradle/gradle.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/ios.git.insteadOf https://chromium.googlesource.com/chromium/src/ios.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/testing.git.insteadOf https://chromium.googlesource.com/chromium/src/testing
git config --global url.http://120.92.49.206:3232/chromiumsrc/third_party.git.insteadOf https://chromium.googlesource.com/chromium/src/third_party
git config --global url.http://120.92.49.206:3232/chromiumsrc/clang-format.git.insteadOf https://chromium.googlesource.com/chromium/llvm-project/cfe/tools/clang-format.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libcxx.git.insteadOf https://chromium.googlesource.com/chromium/llvm-project/libcxx.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libcxxabi.git.insteadOf https://chromium.googlesource.com/chromium/llvm-project/libcxxabi.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libunwind.git.insteadOf https://chromium.googlesource.com/external/llvm.org/libunwind.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/android_ndk.git.insteadOf https://chromium.googlesource.com/android_ndk.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/android_tools.git.insteadOf https://chromium.googlesource.com/android_tools.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/auto.git.insteadOf https://chromium.googlesource.com/external/github.com/google/auto.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/catapult.git.insteadOf https://chromium.googlesource.com/catapult.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/compact_enc_det.git.insteadOf https://chromium.googlesource.com/external/github.com/google/compact_enc_det.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/colorama.git.insteadOf https://chromium.googlesource.com/external/colorama.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/depot_tools.git.insteadOf https://chromium.googlesource.com/chromium/tools/depot_tools.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/errorprone.git.insteadOf https://chromium.googlesource.com/chromium/third_party/errorprone.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/ffmpeg.git.insteadOf https://chromium.googlesource.com/chromium/third_party/ffmpeg.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/findbugs.git.insteadOf https://chromium.googlesource.com/chromium/deps/findbugs.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/freetype2.git.insteadOf https://chromium.googlesource.com/chromium/src/third_party/freetype2.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/harfbuzz.git.insteadOf https://chromium.googlesource.com/external/github.com/harfbuzz/harfbuzz.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/gtest-parallel.git.insteadOf https://chromium.googlesource.com/external/github.com/google/gtest-parallel
git config --global url.http://120.92.49.206:3232/chromiumsrc/googletest.git.insteadOf https://chromium.googlesource.com/external/github.com/google/googletest.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/icu.git.insteadOf https://chromium.googlesource.com/chromium/deps/icu.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/jsr-305.git.insteadOf https://chromium.googlesource.com/external/jsr-305.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/jsoncpp.git.insteadOf https://chromium.googlesource.com/external/github.com/open-source-parsers/jsoncpp.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/junit.git.insteadOf https://chromium.googlesource.com/external/junit.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/fuzzer.git.insteadOf https://chromium.googlesource.com/chromium/llvm-project/compiler-rt/lib/fuzzer.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libjpeg_turbo.git.insteadOf https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libsrtp.git.insteadOf https://chromium.googlesource.com/chromium/deps/libsrtp.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libvpx.git.insteadOf https://chromium.googlesource.com/webm/libvpx.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/libyuv.git.insteadOf https://chromium.googlesource.com/libyuv/libyuv.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/linux-syscall-support.git.insteadOf https://chromium.googlesource.com/linux-syscall-support.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/mockito.git.insteadOf https://chromium.googlesource.com/external/mockito/mockito.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/nasm.git.insteadOf https://chromium.googlesource.com/chromium/deps/nasm.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/openh264.git.insteadOf https://chromium.googlesource.com/external/github.com/cisco/openh264
git config --global url.http://120.92.49.206:3232/chromiumsrc/requests.git.insteadOf https://chromium.googlesource.com/external/github.com/kennethreitz/requests.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/robolectric.git.insteadOf https://chromium.googlesource.com/external/robolectric.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/ub-uiautomator.git.insteadOf https://chromium.googlesource.com/chromium/third_party/ub-uiautomator.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/usrsctp.git.insteadOf https://chromium.googlesource.com/external/github.com/sctplab/usrsctp
git config --global url.http://120.92.49.206:3232/chromiumsrc/binaries.git.insteadOf https://chromium.googlesource.com/chromium/deps/yasm/binaries.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/patched-yasm.git.insteadOf https://chromium.googlesource.com/chromium/deps/yasm/patched-yasm.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/tools.git.insteadOf https://chromium.googlesource.com/chromium/src/tools
git config --global url.http://120.92.49.206:3232/chromiumsrc/client-py.git.insteadOf https://chromium.googlesource.com/infra/luci/client-py.git
git config --global url.http://120.92.49.206:3232/chromiumsrc/boringssl.git.insteadOf https://boringssl.googlesource.com/boringssl.git

//下载depot_tools，webrtc的源码时通过depot_tools这个工具下载的
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git -b gitlab
//设置depot_tools的环境变量，如果webrtc的下载目录不一样，这个地方需要改成自己的
set PATH=C:\webrtc\depot_tools;%PATH%

mkdir code && cd code
gclient config --name src https://chromium.googlesource.com/external/webrtc.git@gitlab
set CDS_CLANG_BUCKET_OVERRIDE=http://120.92.49.206:3232/chromiumsrc/commondatastorage/raw/master/public/chromium-browser-clang
set DEPOT_TOOLS_WIN_TOOLCHAIN=0
//开始下载源码
gclient sync --patch-ref=https://chromium.googlesource.com/chromium/src/build.git@gitlab

//开始编译
cd src
gn gen out/Release "--args=is_debug=false"
ninja -C out/Release

下载源码大概需要1个小时，命令行会有进度的显示，还不错。
下载源码的时候下载third_party的时候会需要很长时间，需要耐心等待，下载的时候一直显示在下载这个部分我还以为网络出现问题了…

编译也需要较长的时间，编译成功最后会有提示的。

我在编译的时候出现了一点问题，编译了一半弹出来失败了，显示了一堆python的问题,应该是版本的问题，不能用python3要用python2。

最后整个文件夹有15G。

使用vs管理webrtc源代码

在src目录下操作
生成 Ninja 工程文件
gn gen out/Default
生成all.sln解决方案
gn gen --ide=vs out/Default

三、运行官方demo

官方提供了一个简单的实例，可以直接运行试一试效果，打开源码的src\out\Release目录，找到peerconnection_client 和peerconnection_server。需要两台电脑，通过局域网相连。一台电脑上运行client和sever,另一台电脑运行client。

直接双击运行，输入ip和端口号，默认8888.
需要两边都有摄像头才能正常开启视频。
运行前要开启windows防火墙的tcp8888端口。

参考
Windows编译运行webrtc全过程