diff -Naur xorg-server-1.1.0/hw/xfree86/int10/xf86int10.h xorg-server-1.1.0.ia64fix/hw/xfree86/int10/xf86int10.h
--- xorg-server-1.1.0/hw/xfree86/int10/xf86int10.h	2005-08-24 20:18:35.000000000 +0900
+++ xorg-server-1.1.0.ia64fix/hw/xfree86/int10/xf86int10.h	2006-07-12 13:50:00.000000000 +0900
@@ -13,6 +13,10 @@
 #include <X11/Xdefs.h>
 #include "xf86Pci.h"
 
+#if defined(__ia64__)
+#undef _PC
+#endif
+
 #define SEG_ADDR(x) (((x) >> 4) & 0x00F000)
 #define SEG_OFF(x) ((x) & 0x0FFFF)