--- ./src/gs_dll_call.h~	2004-08-04 21:36:13.000000000 +0200
+++ ./src/gs_dll_call.h	2006-02-11 14:37:07.000000000 +0100
@@ -17,8 +17,10 @@
 
 
 #ifdef __WINDOWS__
+#ifndef _Windows
 # define _Windows
 #endif
+#endif
 
 #ifdef _Windows
 # ifndef GSDLLEXPORT