--- /dev/null
+<?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="unwind">
+ Use <pkg>sys-libs/libunwind</pkg> to provide better resolution of
+ function names.
+ </flag>
+</use>
+</pkgmetadata>