freeciv supported an SDL client for a long time, but since version 2.1.0 it's starting to be usable. I will attach a patch that makes the SDL client preferred over the xaw one if the sdl use flag is present. Reproducible: Always
Created attachment 134846 [details, diff] freeciv-2.1.0.ebuild.patch
in portage. thanks for the bug report and patch.