app-misc/corectrl: add a patch to fix building with libc++

Signed-off-by: Charlie Quinet <w.iron.zombie@gmail.com>

app-misc/corectrl/corectrl-9999.ebuild

@@ -54,6 +54,11 @@ RDEPEND="${COMMON_DEPEND}
 "
 CONFIG_CHECK="~CONNECTOR ~PROC_EVENTS ~NETLINK_DIAG"
 
+src_prepare() {
+	(clang++ --version 2>&1 | grep -q "libcxx") && eapply "${FILESDIR}/9999-remove_libstdcxxfs_dependency.patch"
+	cmake_src_prepare
+}
+
 pkg_setup() {
 	linux-info_pkg_setup
 }