The fgpanel utility is currently disabled in the flightgear ebuild as it does not link properly. I fixed this issue upstream already and the patch is trivial: http://mapserver.flightgear.org/git/gitweb.pl?p=flightgear;a=blobdiff_plain;f=CMakeModules/FindPLIB.cmake;h=99d2780cfc7396b17029b3b29b9d4c8ede276f45;hp=da5463612aaf72eb7dec88449058e8195979a2fb;hb=dd6c220fd705644faf8df71cded01492ff7af18a;hpb=779a9ae415c58f6d28332b0f9901522e93694129 Might be worth adding it to the ebuild
Thanks for the patch! Applied to 2.8.0.