$NetBSD: patch-ai,v 1.2 2007/07/18 11:25:21 tnn Exp $

--- src/sync.c.orig	2007-03-18 22:36:43.000000000 +0100
+++ src/sync.c
@@ -73,6 +73,8 @@ main (int argc, char **argv)
   if (optind < argc)
     error (0, 0, _("ignoring all arguments"));
 
+#if HAVE_SYNC
   sync ();
+#endif
   exit (EXIT_SUCCESS);
 }