<<< metadata_duplicate_useflag_description >>>
  media-libs/libsdl2|gles2:joystick:sound|games@gentoo.org
<<< open bugs >>>
  https://bugs.gentoo.org/698058 media-libs/libsdl2_USE=altivec_on_ppc64le_results_in_color_corruption
  https://bugs.gentoo.org/741490 media-libs/libsdl2-2.0.12-r2_build_error_with_VIDEO_CARDS=&quot;vc4&quot;
  https://bugs.gentoo.org/664056 media-libs/libsdl2-2.0.8-r1:_SDL_waylanddatamanager.c:(.text+0xc4):_undefined_reference_to_`pthread_sigmask'
  https://bugs.gentoo.org/682586 media-libs/libsdl2-2.0.9:_undefined_reference_to_`SDL_LinuxSetThreadPriority_REAL'
  https://bugs.gentoo.org/727578 media-libs/libsdl2:_Test_failures_for_pygame_caused_by_ARM_optimisations