gentoo-overlay/sys-libs/llvm-libunwind/metadata.xml

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