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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="person">
<email>billie@gentoo.org</email>
<name>Daniel Pielmeier</name>
</maintainer>
<use>
<flag name="external-filters">Allow the use of external processes as file content 
filters (Note: this is a potential security risk)</flag>
<flag name="external-filters-setuid">Also allow the use of external setuid 
processes as file content filters (Note: this is a potential security 
risk)</flag>
<flag name="launch-frontend">Enable the tcl gui for xorriso</flag>
<flag name="launch-frontend-setuid">Enable the tcl gui for xorriso under setuid</flag>
<flag name="frontend-optional">Use <pkg>dev-tcltk/bwidget</pkg> which is not strictly required for the frontend</flag>
</use>
</pkgmetadata>