bug_ebuild/gentoo/sys-libs/compiler-rt/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
		<email>llvm@gentoo.org</email>
	</maintainer>
	<use>
		<flag name='clang'>Force building using installed clang (rather
			than the default CC/CXX).</flag>
	</use>
</pkgmetadata>