Same for avahi with the compat use flag set.
Could you be more specific? It's not linked against avahi (or howl or mdnsresponder) here, but I use --as-needed, so I don't get extraneous links. In addition, why is this a problem?
If you think this is a real problem, then reopen this bug, and attach more usable info, like ldd output of relevant libs. and your emerge --info.