gentoo-overlay/dev-db/percona-server/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>mysql-bugs@gentoo.org</email>
    <name>MySQL</name>
  </maintainer>
<use>
  <flag name="cjk">Add CJK support for InnoDB fulltext search using <pkg>app-text/mecab</pkg></flag>
  <flag name="latin1">Use LATIN1 encoding instead of UTF8</flag>
  <flag name="numa">Enable NUMA support using <pkg>sys-process/numactl</pkg> (NUMA kernel support is also required)</flag>
  <flag name="profiling">Add support for statement profiling (requires USE=community).</flag>
  <flag name="rocksdb">Add support for RocksDB; a key/value, LSM database optimized for flash storage</flag>
  <flag name="router">Build the MySQL router program</flag>
  <flag name="server">Build the server program</flag>
  <flag name="tokudb">Add support for TokuDB storage engine</flag>
  <flag name="tokudb-backup-plugin">Builds the TokuDB backup plugin</flag>
</use>
</pkgmetadata>