gentoo-overlay/net-libs/webkit-gtk/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>gnome</herd>
  <use>
  	<flag name="coverage">Enable code coverage support</flag>
	<flag name='egl'>Enable EGL support.</flag>
        <flag name="geoloc">Enable geolocation support through <pkg>app-misc/geoclue</pkg></flag>
	<flag name='gles2'>Enable GLESv2 support.</flag>
	<flag name="libsecret">Enable libsecret support to store login credentials</flag>
	<flag name="webgl">Build support for the WebGL HTML API using <pkg>virtual/opengl</pkg></flag>
  </use>
</pkgmetadata>