gentoo-overlay/dev-libs/tre/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>shell-tools@gentoo.org</email>
    <name>Gentoo Shell Tools Project</name>
  </maintainer>
  <upstream>
    <remote-id type="github">laurikari/tre</remote-id>
  </upstream>
  <use>
    <flag name="agrep">Build agrep tool</flag>
    <flag name="alloca">Enable if you want TRE to use alloca() instead of malloc() when allocating memory needed for regexec operations</flag>
    <flag name="approx">Enable the approximate matching functionality</flag>
  </use>
</pkgmetadata>