When I attempt to emerge any game requiring flatzebra (e.g. burgerspace), flatzebra fails to emerge because configure does not detect SDL_Mixer. checking for SDL_mixer... configure: error: SDL_mixer not found SDL_mixer 1.2.4 or later is needed. See http://www.libsdl.org/projects/SDL_mixer/
Created attachment 78842 [details] config.log from emerge flatzebra
You need to remerge some packages. revdep-rebuild will probably help with this. smpeg is likely one that should be remerged.