Get and compile WebRTC with webrtc-build-scripts.

Follow the README.md of the repo to setup develop environment on ubuntu 14.04.
Notice that you may need VPN if you have no access to google.

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$ source android/build.sh # setup several commands to pull and compile WebRTC code
$ install_dependencies # install some needed libs 
$ install_dependencies # pull WebRTC source code

$ export WEBRTC_DEBUG=true # with this you compile for debug
$ build_apprtc # compile WebRTC and the example AppRTCDemo for all archs

To compile WebRTCDemo,

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$ ninja -C /out/out_android_xx/Debug WebRTCDemo #xx stands for the arch of the target platform

To specify the arch(for example armv8), you may

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$ export WEBRTC_ARCH=armv8

By default, it supports x86, x86_64, armv7 and armv8. To compile WebRTC for only one arch, do not use build_apprtc but

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$ execute_build

Look into build.sh build_apprtc calls execute_build to compile for each arch.

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build_apprtc() {
    export WEBRTC_ARCH=armv7
    prepare_gyp_defines &&
    execute_build

    export WEBRTC_ARCH=armv8
    prepare_gyp_defines &&
    execute_build

    export WEBRTC_ARCH=x86
    prepare_gyp_defines &&
    execute_build

    export WEBRTC_ARCH=x86_64
    prepare_gyp_defines &&
    execute_build
}

After successfully compiling WebRTC you will find apks in out_android_xx.

AppRTCDemo’s source code locates under /android/webrtc/src/webrtc/example/androidapp/

WebRTCDemo’s source code locates under /android/webrtc/src/webrtc/example/android/