http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47806
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-02-18 23:22:44 UTC --- (In reply to comment #3) > Don't you need a sysroot to build a cross compiler in this case? Try adding > --without-headers --with-newlib if you don't have a sysroot for AIX. Note > there is nothing AIX specific in building a cross compiler here. Oh one more thing newlib has not been ported to AIX which is why libc is not being found.