http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47836
--- Comment #7 from Ralf Wildenhues <rwild at gcc dot gnu.org> 2011-02-26 15:34:12 UTC --- It should generally work to pass --disable-target-zlib, and similar for other target directories, as workarounds. If it doesn't work, that's worth a bug report (please open a separate one in that case, and link from this one). Thanks.