there's a bug open atm requesting we add biarch support to our x86/amd64 compilers [1]. i'd like to take this further and do it for all ppc systems too (sparc has already done this). basically, this just affects the code that gcc can generate. it does not affect the libraries it includes. i haven't heard any feedback from peeps, so if no one has any reason not to do this, i'll enable it prob this weekend. the advantage is that it should obsolete the separate kgcc64 package for most people. and i think it might help out with the multilib bootstrap issue: you can't build multilib gcc without a multilib glibc, and can't build a multilib glibc without a multilib gcc, but i think you should be able to build a multilib glibc with a multiarch gcc, and then a multilib gcc after that. -mike