#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/misc/sg_path.hxx>
+#include <simgear/props/props_io.hxx>
+
#include <osg/GLU>
#include <Aircraft/aircraft.hxx>
#include <GUI/new_gui.hxx> // FGFontCache
#include <Main/globals.hxx>
#include <Scenery/scenery.hxx>
+#include <Airports/runways.hxx>
#include "hud.hxx"