optional_depends  sdl                                 \
                  ""                                  \
                  "--disable-sdl"                     \
                  "for SDL video output in mpeg2dec"  &&

optional_depends  libx11 '' "--without-x"   "for X11 video output in mpeg2dec" &&
if is_depends_enabled $SPELL libx11;then
  depends libxext &&
  depends libxv
fi
