>=app-emulation/libspectrum-1.5.0[zlib?
]
dev-libs/glib:2

alsa?
      ( media-libs/alsa-lib )

ao?
      ( media-libs/libao )

backend-X?
      ( x11-libs/libX11 x11-libs/libXext )

backend-gtk3?
      ( x11-libs/gtk+:3 )

backend-sdl?
      ( media-libs/libsdl[joystick,sound] )

backend-svga?
      ( media-libs/svgalib )

gpm?
      ( backend-fbcon?
            ( sys-libs/gpm )
       )

joystick?
      ( !backend-sdl?
            ( media-libs/libjsw )
       )

png?
      ( media-libs/libpng:0= )

pulseaudio?
      ( media-libs/libpulse )

xml?
      ( dev-libs/libxml2:2 )

zlib?
      ( sys-libs/zlib )