--- /usr/portage/sys-devel/clang/clang-2.9.ebuild	2011-04-22 13:31:25.000000000 +0200
+++ clang-2.9-r1.ebuild	2011-06-16 22:38:46.813741003 +0200
@@ -18,10 +18,11 @@
 LICENSE="UoI-NCSA"
 SLOT="0"
 KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux ~ppc-macos"
-IUSE="alltargets debug +static-analyzer +system-cxx-headers test"
+IUSE="alltargets debug gold +static-analyzer +system-cxx-headers test"
 
 # Note: for LTO support, clang will depend on binutils with gold plugins, and LLVM built after that - http://llvm.org/docs/GoldPlugin.html
-DEPEND="static-analyzer? ( dev-lang/perl )"
+DEPEND="static-analyzer? ( dev-lang/perl )
+        gold? ( >=sys-devel/binutils-2.21 )"
 RDEPEND="~sys-devel/llvm-${PV}[alltargets=]"
 
 S="${WORKDIR}/llvm-${PV}"
@@ -64,6 +65,14 @@
 	einfo "Fixing rpath"
 	sed -e 's,\$(RPATH) -Wl\,\$(\(ToolDir\|LibDir\)),$(RPATH) -Wl\,'"${EPREFIX}"/usr/$(get_libdir)/llvm, \
 		-i Makefile.rules || die "rpath sed failed"
+
+	if use gold; then
+	    einfo "Setting the built-in linker to ld.gold"
+		sed -e 's|/bin/ld|/bin/ld.gold|g' \
+		    -e 's|GetProgramPath("ld")|GetProgramPath("ld.gold")|g' \
+			-i tools/clang/lib/Driver/ToolChains.cpp \
+			|| die "ToolChains.cpp sed failed"
+	fi
 }
 
 src_configure() {