A useful feature of cmake that works at least on ubuntu is the tab completion. So you can run
cmake -DBUILD<tab>
and you get a list of build targets that can be enabled/disabled. You can also try with
cmake -DENABLE<tab>
that gives you a list of features you can enable or disable.
cmake -D<tab>
gives you, of course, the complete list of what you can set in wireshark's cmake.
Completion doesn't work on centos/redhat, and I don't know about other distros. It doesn't work on windows, afaik.
Hope this helps ubuntu developers :).