Fix 64bit builds

OBS-URL: https://build.opensuse.org/package/show/devel:tools:compiler/llvm?expand=0&rev=129

llvm.spec

@@ -176,15 +176,16 @@ make %{?_smp_mflags}
 
 popd
 pushd stage3
-# Needed to make clang resource dir working inside build tree
-ln -s lib lib64
+
+# autotools ignore --libdir
+mkdir Release
+ln -s lib Release/lib64
 
 export CC=$TOPLEVEL/stage2/Release/bin/clang
 export CXX=$TOPLEVEL/stage2/Release/bin/clang++
 
 ../configure \
         --prefix=%{_prefix} \
-	--libdir=%{_libdir} \
 	--enable-optimized \
 	--disable-assertions \
 	--enable-pic \