>>>>> Perry Smith writes: Perry> You can build 64 bit libraries in 32 bit mode.
You are answering a different question. AIX supports building 64-bit executables on 32-bit systems. It does not depend on the processor. The question is about bootstrapping GCC. GCC bootstrap wants to run 64-bit executables during its configuration process. This is orthogonal to whether GCC or AIX can compile 64-bit executables on a 32-bit system. The bootstrap wants to run executables corresponding to each multilib, so one currently needs to perform the bootstrap on a system capable of running in all modes or restrict some of the multilib modes. David