Haxe for Unity with -net-lib

build.hxml

-cp src
-cs bin/sample-cs
-net-lib "C:\Program Files (x86)\Unity\Editor\Data\Managed\UnityEngine.dll"
-D dll
Main

Main.hx

class Main extends unityengine.MonoBehaviour
{
    function Update()
    {
        unityengine.Debug.Log("Hello");
    }
}