--- src/impact_shadow.c.orig	2006-06-28 12:27:59.000000000 -0400
+++ src/impact_shadow.c	2006-06-28 12:30:44.000000000 -0400
@@ -14,11 +14,13 @@
 #include "config.h"
 #endif
 
-#include <asm/cachectl.h>
-#include <sys/cachectl.h>
+/*#include <asm/cachectl.h>
+#include <sys/cachectl.h>*/
 #include <sys/ioctl.h>
 #include "impact.h"
 
+#define DCACHE  (1<<1)          /* writeback and flush data cache */
+
 /*
  * 4th parameter to be passed to xf86SetDepthBpp()
  */