--- Xvnc/config/cf/Imake.cf.orig	2006-12-23 21:07:55.000000000 +0900
+++ Xvnc/config/cf/Imake.cf	2007-09-05 07:45:05.000000000 +0900
@@ -206,6 +206,12 @@
 #  define i386Architecture
 #  undef i386
 # endif
+# ifdef __x86_64__
+#  ifndef x86_64Architecture
+#   define x86_64Architecture
+#  endif
+#  undef __x86_64__
+# endif
 # ifdef __alpha__
 #  define AlphaBsdArchitecture
 #  define AlphaArchitecture