$ git clone --recurse-submodules https://git.zx2c4.com/wireguard-android
$ cd wireguard-android
$ ./gradlew assembleRelease

implementation 'com.wireguard.android:tunnel:$wireguardTunnelVersion'

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
    coreLibraryDesugaringEnabled = true
}
dependencies {
    coreLibraryDesugaring "com.android.tools:desugar_jdk_libs:1.1.5"
}