gentoo-overlay/dev-java/oracle-jdk-bin/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>java@gentoo.org</email>
    <name>Java</name>
  </maintainer>
  <longdescription>Oracle Java SE Development Kit, Official Binary Distribution</longdescription>
  <use>
    <flag name="commercial">Install features requiring a commercial license for production use</flag>
    <flag name="headless-awt">Don't install the X backend for AWT, needed by some GUIs (used to be X flag)</flag>
    <flag name="gentoo-vm">Allow this JDK to be recognised by Gentoo (package manager, eselect, java-config, EXPERIMENTAL!)</flag>
    <flag name="gtk2">Enable GTK+ 2 support in JavaFX</flag>
    <flag name="gtk3">Enable GTK+ 3 support in JavaFX</flag>
    <flag name="javafx">Install JavaFX libraries</flag>
    <flag name="jce">Install Java Cryptographic Extension Unlimited Strength Jurisdiction Policy Files</flag>
    <flag name="source">Install JVM (and optionally JavaFX) sources</flag>
    <flag name="visualvm">Install VisualVM debugging tool</flag>
  </use>
</pkgmetadata>