Use NDK build in sbt-android instead

build.sbt

@@ -13,8 +13,6 @@ platformTarget := "android-25"
 compileOrder := CompileOrder.JavaThenScala
 javacOptions ++= "-source" :: "1.7" :: "-target" :: "1.7" :: Nil
 scalacOptions ++= "-target:jvm-1.7" :: "-Xexperimental" :: Nil
-ndkJavah := Seq()
-ndkBuild := Seq()
 
 proguardVersion := "5.3.2"
 proguardCache := Seq()

build.sh

@@ -4,12 +4,10 @@ function try () {
 "$@" || exit -1
 }
 
-# Build native binaries
 pushd src/main
-try $ANDROID_NDK_HOME/ndk-build -j8
 # Clean up old binaries (no longer used)
-rm -rf assets/armeabi-v7a
-rm -rf assets/x86
+rm -rf assets/armeabi-v7a assets/x86 libs/armeabi-v7a libs/x86
+mkdir -p libs/armeabi-v7a libs/x86
 popd
 
 # Build kcptun