gentoo-overlay/sys-libs/libcxx/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="person">
		<email>aballier@gentoo.org</email>
		<name>Alexis Ballier</name>
	</maintainer>
	<maintainer type="project">
		<email>llvm@gentoo.org</email>
		<name>LLVM Project</name>
	</maintainer>
	<use>
		<flag name="libcxxabi">Build on top of <pkg>sys-libs/libcxxabi</pkg> instead of gcc's libsupc++ (avoids depending on gcc).</flag>
		<flag name="libunwind">Use libunwind instead of libgcc_s for stack unwinding, thus avoiding dependence on gcc.</flag>
	</use>
</pkgmetadata>