Created attachment 313753 [details] tbb-4.0.297:20120531-204924.log build log attached reproducible with gold linker for example
Created attachment 313755 [details, diff] tbb-4.0.297.ebuild.diff quick fix (I myself prefer to not add patches to stable ebuilds if possible)
Created attachment 313765 [details, diff] tbb-4.0.297-underlinking.patch if you prefer patching this will do.
applied in cvs. thanks!