diff -urN xc.orig/config/cf/linux.cf xc/config/cf/linux.cf
--- xc.orig/config/cf/linux.cf	2004-08-08 14:31:29.134334480 +0200
+++ xc/config/cf/linux.cf	2004-08-08 14:31:49.247276848 +0200
@@ -1019,3 +1019,7 @@
 #ifndef XFree86ServerOSDefines
 # define XFree86ServerOSDefines
 #endif
+
+#ifndef HasZlib
+#define HasZlib		YES
+#endif