[syslog-ng] building 2.0 on freebsd

I'm attempting to install 2.0 daily snapshot from 12 october onto a freebsd 6.1 system. From the FAQ I see that it needs to have glib installed, which was easy. However, the configure is not able to find the eventlib library. I cannot find what provides this library. My searches all keep pointing to something which is part of bind, which seems not right to me. What do I need to install to get eventlib on this system?