--- configure.orig	2013-11-30 20:59:36.000000000 +0100
+++ configure	2013-11-30 20:59:36.000000000 +0100
@@ -15429,7 +15429,7 @@
     use_builtin_timezone=yes
     os_win32=yes
     ;;
-*linux*)
+*linux*|*dragonfly*|*freebsd*)
     use_builtin_timezone=no
     os_win32=no
     ;;