gentoo-overlay/media-libs/libvpx/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>video</herd>
  <maintainer>
    <email>media-video@gentoo.org</email>
  </maintainer>
  <use>
    <flag name="postproc">Enable additional post processing filters</flag>
    <flag name="sse3">Enable optimization for SSE3 capable chips</flag>
    <flag name="ssse3">faster floating point optimization for SSSE3 capable chips (Intel Core 2 and later chips)</flag>
	<flag name="sse4_1">Enable optimization for SSE4_1 capable processors (Intel Core 2 Penryn and later chips)</flag>
  </use>
</pkgmetadata>