depends  SDL
depends  libpng
depends  lua

optional_depends "libogg"     "--with-ogg"     ""  "ogg sound support"
optional_depends "libmikmod"  "--with-mikmod"  ""  "mod sound support"
optional_depends "flac"       "--with-flac"    ""  "flac sound support"
optional_depends "libmad"     "--with-mad"     ""  "mad sound support"
