=== modified file 'include/my_global.h'
--- include/my_global.h	2011-04-13 19:05:26 +0000
+++ include/my_global.h	2011-04-20 09:07:38 +0000
@@ -504,6 +504,10 @@
 #undef DBUG_OFF
 #endif
 
+#if !defined(DBUG_ON) && !defined(DBUG_OFF)
+# define DBUG_OFF
+#endif
+
 /* We might be forced to turn debug off, if not turned off already */
 #if (defined(FORCE_DBUG_OFF) || defined(_lint)) && !defined(DBUG_OFF)
 #  define DBUG_OFF