On 18/03/15 06:37, Alex Blekhman wrote: > My goal is to be able to compile both i686 and x86_64 binaries on the > same Debian 6.0 i686 machine. Default compilation target should be i686, > and x86_64 should be available via switch -m64. That's the usual default. Do you really want i686-elf? Are you cross- compiling? Andrew.