[Android]Linux下WebRTC下载与编译

1.硬盘空间：

WebRTC官方原话：

The checkout size is large due the use of the Chromium build toolchain and many dependencies. Estimated size:

Linux: 6.4 GB.
Linux (with Android): 16 GB (of which ~8 GB is Android SDK+NDK images).
Mac (with iOS support): 5.6GB

2.破墙：

Ubuntu破墙：http://www.cnblogs.com/hcbin/p/8489041.html

3.将socks5协议转http协议

proxychains使用socks5协议，但cipd不支持，会报出这样的错误：

[...] cipd: connectivity error ...

所以只能将socks5协议转http协议

使用polipo进行转换：

git clone https://github.com/jech/polipo.git

安装

cd polipo
sudo make all
sudo make install

打开编辑器，新建文件

vim /etc/polipo.conf

添加如下内容，保存关闭（绿字是设置polipo的代理，红字是破墙代理）

daemonise = false
pidFile = /tmp/polipo.pid
proxyAddress="0.0.0.0"
proxyPort=8090
socksParentProxy = "127.0.0.1:1080"
socksProxyType = socks5
diskCacheRoot = ""

执行polipo（PS：终端会卡住），打开新终端执行操作，命令可以省略proxychains前缀直接破墙

/usr/local/bin/polipo -c /etc/polipo.conf

参考：https://hk.saowen.com/a/fa13ead9f226de7d089a75fc4f56c77e836c43d7317b4fced023af6d133b448e

4.设置depot_tools代理

不设置的话download_from_google_storage会提示NO_AUTH_BOTO_CONFIG

打开编辑器，新建文件

vim /etc/gclient_boto.cfg

添加如下内容，保存关闭（绿字是polipo代理）

[Boto]
proxy = 127.0.0.1
proxy_port = 8090

终端设置变量

export NO_AUTH_BOTO_CONFIG=/etc/gclient_boto.cfg

参考：https://blog.csdn.net/qq_22716879/article/details/53760879

5.设置git

git config --global core.packedgitlimit 10g
git config --global core.packedgitwindowsize 10g
git config --global core.bigfilethreshold 10g
git config --global core.compression 0
git config --global core.autocrlf false
git config --global core.filemode false
git config --global pack.deltacachesize 10g
git config --global pack.packsizelimit 10g
git config --global pack.windowmemory 10g
git config --global pack.threads 4

可选

git config --global branch.autosetupmerge always
git config --global branch.autosetuprebase always

下载代码，下载中断用gclient sync命令继续下载，整个下载过程需要几个小时（视乎网络速度）

PS：建议插网线，一般网线传输速率比WIFI快和稳定，WIFI受路由发送速率与无线网卡接收速率限制

mkdir webrtc-android && cd webrtc-android
fetch --nohooks webrtc_android
gclient sync

因为异常中断，使用gclient sync继续下载

如中断时发现某个文件无法下载，请手动下载，并复制到提示的文件夹中，然后多尝试用gclient sync继续下载

root@ubuntu:/home/hcbin/webrtc-android# gclient sync
Running depot tools as root is sad.
Syncing projects:  23% (15/63) src/third_party/accessibility_test_framework:chromium/third_party/accessibility-test-frameSyncing projects:  25% (16/63) src/third_party/android_support_test_runner:chromium/third_party/android_support_test_runnSyncing projects:  26% (17/63) src/third_party/bazel:chromium/third_party/bazel                                          Syncing projects:  30% (19/63) src/third_party/byte_buddy:chromium/third_party/byte_buddy    
________ running 'cipd ensure -log-level error -root /home/hcbin/webrtc-android/src -ensure-file /tmp/tmp78dpke.ensure' in '.'
Bootstrapping cipd client for linux-amd64 from https://chrome-infra-packages.appspot.com/client?platform=linux-amd64&version=git_revision:ae28364c740acff97ae118adcb2808b6cb5129c5...
curl: (7) Failed to connect to chrome-infra-packages.appspot.com port 443: Connection refused
Syncing projects:  68% (44/64) src/third_party/junit/src                                                             
[0:02:33] Still working on:
[0:02:33]   src/third_party/icu

[0:02:43] Still working on:
[0:02:43]   src/third_party/icu

[0:02:53] Still working on:
[0:02:53]   src/third_party/icu

[0:03:03] Still working on:
[0:03:03]   src/third_party/icu

[0:03:14] Still working on:
[0:03:14]   src/third_party/icu

[0:03:18] Still working on:
[0:03:18]   src/third_party/icu
Syncing projects:  70% (45/64) src/third_party/icu      

src/third_party/apk-patch-size-estimator:chromium/third_party/apk-patch-size-estimator (ERROR)
----------------------------------------
[0:00:47] Started.
----------------------------------------
Error: Command 'cipd ensure -log-level error -root /home/hcbin/webrtc-android/src -ensure-file /tmp/tmp78dpke.ensure' returned non-zero exit status 7
root@ubuntu:/home/hcbin/webrtc-android# 

参考：https://blog.csdn.net/qq_22716879/article/details/53760879

6.编译

下载依赖

cd src
./build/install-build-deps.sh

确定当前工作目录是src，使用GN生成项目

gn gen out/Release --args='target_os="android" target_cpu="arm"'

ARM64 使用 target_cpu="arm64"

32-bit x86: 使用 target_cpu="x86"

64-bit x64: 使用 target_cpu="x64"

编译

ninja -C out/Release

参考：https://webrtc.org/native-code/android/