build shadowsocks-android

$ git clone https://github.com/shadowsocks/shadowsocks-android --depth=1

$ git submodule update --init --recursive

$ cd shadowsocks-android

$ bash gradlew

$ cd core/src/main/rust/shadowsocks-rust

$ rustup target add armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android arm-linux-androideabi

$ cargo build

$