gentoo-overlay/app-misc/gpsdrive/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer><email>maintainer-needed@gentoo.org</email></maintainer>
<use>
  <flag name='gdal'>Include gdal and ogr support for format conversions.</flag>
  <flag name='kismet'>Include support for kismet wifi mapping.</flag>
  <flag name='mapnik'>Include mapnik support for custom map creation.</flag>
  <flag name='scripts'>Include some of the additional helper scripts.</flag>
  <flag name='speech'>Include speech support.</flag>
</use>
</pkgmetadata>