gentoo-overlay/virtual/podofo-build/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="person"><email>zmedico@gentoo.org</email></maintainer>
<use>
	<flag name="boost">Add support for boost</flag>
	<flag name="tools">
		Build and install commandline tools.
	</flag>
</use>
</pkgmetadata>