games-strategy/wargus-2.2.5.5 fails to compile against media-libs/libpng-1.5*. Companion package games-engines/stratagus has a "stratagus-2.2.5.5-libpng15.patch" but wargus has not. I tried to port it to libpng-1.5* and it compiles fine but I can't test it right now. Maybe someone with more experience in libpng-porting issues should look over it. Reproducible: Always
Created attachment 296555 [details] build.log
Created attachment 296557 [details, diff] wargus-libpng-1.5.patch
in portage. thanks for the bug report and patch.