gentoo-overlay/sys-cluster/pacemaker/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
   <herd>cluster</herd>
   <longdescription>Pacemaker is a cluster resource manager.
	  It achieves maximum availability for your cluster services (aka. resources) by detecting and 
	  recovering from node and resource-level failures by making use of the messaging and membership 
	  capabilities provided by your preferred cluster infrastructure (either OpenAIS or Heartbeat).
   </longdescription>
   <use>
	   <flag name="cman">Enable <pkg>sys-cluster/cman</pkg> support.</flag>
	   <flag name="heartbeat">Enable <pkg>sys-cluster/heartbeat</pkg> support.</flag>
	   <flag name="smtp">Enable SMTP support via <pkg>net-libs/libsmtp</pkg></flag>
   </use>
</pkgmetadata>