http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53662
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-06-13 21:12:57 UTC --- (In reply to comment #0) > Assembler messages: > Fatal error: no compiled in support for x86_64 > configure:3058: $? = 1 That means you need a 64-bit capable binutils. Just a guess, but you might need to use --target=x86_64-unknown-linux-gnu to make a cross compiler for x86_64, which will be multilib-capable by default. To do that you'll need a 64-bit binutils and 64-bit glibc. This should really be dealt with on the gcc-help mailing list, I don't think it's a bug.
