--- a/src/variables.h	Tue May 27 00:50:55 2008 +0000
+++ b/src/variables.h	Tue Jun 17 10:32:49 2008 +0000
@@ -5,6 +5,10 @@
 #ifndef VARIABLES_H
 #define VARIABLES_H
 
+#ifndef VARDEF
+#define VARDEF extern
+#endif
+
 /* Amount of game ticks */
 VARDEF uint16 _tick_counter;