#include <simgear/compiler.h>
-#ifdef _MSC_VER
-#include <Winsock2.h>
+#if defined( _MSC_VER ) || defined( __MINGW32__ )
+# include <Winsock2.h>
#endif
#include <math.h>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/sgstream.hxx>
#include <simgear/structure/exception.hxx>
+#include <simgear/props/props_io.hxx>
#include <Main/fg_io.hxx>
#include <Main/fg_props.hxx>