--- a/trunk/yaws/configure.in
+++ b/trunk/yaws/configure.in
@@ -2,6 +2,9 @@
 dnl define([AC_CACHE_SAVE], )dnl
 
 AC_INIT(Makefile)
+
+
+AC_MSG_ERROR([m4_include([YAWS-SVN-IS-OBSOLETE])])
 
 
 dnl work out who the cpu, vendor and OS are