$NetBSD: patch-ab,v 1.1 2008/10/02 16:34:18 joerg Exp $

--- configure.orig	2006-12-24 18:45:07.000000000 +0000
+++ configure
@@ -21508,7 +21508,10 @@ cat >>confdefs.h <<\_ACEOF
 _ACEOF
 
   fi
-  if test $LIBXML2_VERSION -ge 2616; then
+  good_libxml2=no
+  case "$LIBXML2_VERSION" in 27*) good_libxml2=yes;; esac
+  test $LIBXML2_VERSION -ge 2616 && good_libxml2=yes
+  if test $good_libxml2 = yes; then
     cat >>confdefs.h <<\_ACEOF
 #define HAVE_LIBXML2 1
 _ACEOF