gentoo-overlay/sys-freebsd/freebsd-ubin/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>bsd@gentoo.org</email>
    <name>BSD Project</name>
  </maintainer>
  <use>
    <flag name="audit">
      Build auditing tools.
    </flag>
    <flag name="netware">
      Build libraries and tools to work with NetWare protocols (IPX
      and NCP).
    </flag>
	<flag name="ar">
	  Build FreeBSD's ar and ranlib replacements based on libarchive. The
	  toolchain will still use binutils' version but you can play with it.
	  They have been renamed to freebsd-ar and freebsd-ranlib not to collide
	  with binutils.
	</flag>
    <flag name="zfs">Enable ZFS support (for fstat actually).</flag>
  </use>
</pkgmetadata>