gentoo-overlay/app-office/libreoffice/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>office@gentoo.org</email>
    <name>Gentoo Office project</name>
  </maintainer>
  <longdescription>LibreOffice is the successor of OpenOffice.org. 
This ebuild allows you to compile it yourself. Unfortunately this 
compilation can take up to a day depending on the speed of your 
computer. It will however make a snappier LibreOffice than the binary 
version</longdescription>
  <use>
    <flag name="base">Enable full support for LibreOffice Base databases (involves additional bundled libs)</flag>
    <flag name="clang">Use Clang compiler instead of GCC</flag>
    <flag name="coinmp">Use <pkg>sci-libs/coinor-mp</pkg> as alternative solver</flag>
    <flag name="googledrive">Enable support for remote files on Google Drive</flag>
    <flag name="mariadb">Prefer mariadb connector over mysql connector</flag>
    <flag name="odk">Build the Office Development Kit</flag>
    <flag name="pdfimport">Enable PDF import via the Poppler library</flag>
    <flag name="vulkan">Enable Vulkan usage via the skia library (clang recommended)</flag>
  </use>
</pkgmetadata>