WebRTC Automated Builds

These cross platform build scripts automate the hard work of building and packaging WebRTC. Big thanks to @vsimon for laying the foundation for these scripts.

Supported platforms

• OSX: Homebrew recommend. Build for 'mac' and 'ios'.
• Windows: Visual Studio Community 2015 Update 3 or newer with a bash shell such as Git for Windows or MSYS installed.
• Linux: Debian or Ubuntu flavour with apt-get available. Build for 'linux' and 'android'.

Usage

To build the latest version of WebRTC just type:

# Build latest WebRTC for current platform:
./build.sh

# To compile a specific branch with both x64 and x86 libraries you would run:
./build.sh -c x64 -b branch-heads/66
./build.sh -c x86 -b branch-heads/66 -x

# To cross compile both x64 and x86 libraries for iOS you would run (on MacOS):
./build.sh -c x64 -t ios
./build.sh -c x86 -t ios -x

Or with options:

Usage:
   $0 [OPTIONS]

WebRTC automated build script.

OPTIONS:
   -o OUTDIR      Output directory. Default is 'out'
   -b BRANCH      Latest revision on git branch. Overrides -r. Common branch names are 'branch-heads/nn', where 'nn' is the release number.
   -r REVISION    Git SHA revision. Default is latest revision.
   -t TARGET OS   The target os for cross-compilation. Default is the host OS such as 'linux', 'mac', 'win'. Other values can be 'android', 'ios'.
   -c TARGET CPU  The target cpu for cross-compilation. Default is 'x64'. Other values can be 'x86', 'arm64', 'arm'.
   -l BLACKLIST   List *.o objects to exclude from the static library.
   -e             Compile WebRTC with RTII enabled.
   -f             Build only mode. Skip repo sync and dependency checks, just build, compile and package.
   -d             Debug mode. Print all executed commands.
   -h             Show this message
EOF

The output packages will be saved to {OUTDIR}/webrtcbuilds-<rev>-<sha>-<target-os>-<target-cpu>.<ext>, where <rev> is the revision number of the commit, <sha> is the short git SHA of the commit, and <target-os>-<target-cpu> is the OS (linux, mac, win) and CPU (x64, x86) of the target environment.

On Windows 7-Zip is used for compressing packages, which produces vastly superiour output file size. On mac and linux the output file is tar.gz.

Running tests

Once you have compiled the libraries you can run a quick compile test to ensure build integrity:

./test/run_tests.sh out/webrtc-17657-02ba69d-linux-x64

Further reading

The following links point to official WebRTC related documentation:

• https://webrtc.org/native-code/development/
• https://webrtc.org/native-code/development/prerequisite-sw/
• http://dev.chromium.org/developers/how-tos/install-depot-tools
• https://chromium.googlesource.com/chromium/src/+/master/docs/windows_build_instructions.md
• https://chromium.googlesource.com/chromium/src/+/master/tools/gn/docs/quick_start.md