sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }

// called every time gradle gets executed, takes the native dependencies of
    // the natives configuration, and extracts them to the proper libs/ folders
    // so they get packed with the APK.
    task copyAndroidNatives() {
        file("libs/armeabi/").mkdirs()
        file("libs/armeabi-v7a/").mkdirs()
        file("libs/arm64-v8a/").mkdirs()
        file("libs/x86_64/").mkdirs()
        file("libs/x86/").mkdirs()

        configurations.natives.files.each { jar ->
            def outputDir = null
            if (jar.name.endsWith("natives-arm64-v8a.jar")) outputDir = file("libs/arm64-v8a")
            if (jar.name.endsWith("natives-armeabi-v7a.jar")) outputDir = file("libs/armeabi-v7a")
            if (jar.name.endsWith("natives-armeabi.jar")) outputDir = file("libs/armeabi")
            if (jar.name.endsWith("natives-x86_64.jar")) outputDir = file("libs/x86_64")
            if (jar.name.endsWith("natives-x86.jar")) outputDir = file("libs/x86")
            if (outputDir != null) {
                copy {
                    from zipTree(jar)
                    into outputDir
                    include "*.so"
                }
            }
        }
    }