gentoo-overlay/media-gfx/gmic/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>graphics</herd>
	<use>
		<flag name="graphicsmagick">Enable support for many common image file formats using the GraphicsMagick++ library</flag>
		<flag name="opencv">Enable support for webcams using the OpenCV library</flag>
	</use>
</pkgmetadata>