now that's weird.
sdl_gfx is there, tho. (-> SDL_gfx-2.0.25)
theres also SDL2_gfx, which is not installed. i am trying to build it, but it fails, telling me i am using an unknown compiler flag "-mmmx". that's nowhere to be found in the .slackbuild or env. i dunno where it's coming from :(...