HXCPP-DEBUGGER fatal error LNK1120: 2 unresolved externals

```hxml
-cp src
-main Main
--cpp bin/cpp

-D dll_link

-D HXCPP_M64
-D HXCPP-DEBUGGER
```

and Main.hx

```hx
package;

@:nativeGen
class Main {
public static function main() {

trace('hello dll');
}

public static function test(){

trace('from haxe dll test');
}
}
```