http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53798
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-17 10:46:27 UTC --- What's your complete configure command? Multilib bootstrap on x86_64-linux with --enable-languages=c,c++,java works fine for me, and for others e.g. http://gcc.gnu.org/ml/gcc-testresults/2012-07/msg01170.html