gentoo-overlay/dev-ruby/ruby-sdl/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>ruby</herd>
  <use>
    <flag name='image'>Enable <pkg>media-libs/sdl-image</pkg> support</flag>
    <flag name='mixer'>Enable <pkg>media-libs/sdl-mixer</pkg> support</flag>
    <flag name='sge'>Enable sdl-sge support</flag>
  </use>
</pkgmetadata>