http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47836
--- Comment #8 from th.r.klein at web dot de 2011-02-27 09:23:44 UTC --- Exactly this is the current problem, there is neither a working switch like --disable-target-zlib nor a working --disable-target-libiberty. (sorry if confusing you by using of "without" instead of "disable", but this was only an example.)