2009/11/8 Vladimir Prus <ghost@cs.msu.su>
> and wants to issue errors.user-error "64-bit PPC compilation is not
> supported when targeting OSX 10.6 or later")

Well, at least it produces *some* diagnostics. I've added missing import
and have now checked in in trunk. I'll merge to release branch unless
something breaks. I attach the final patch for convenience.

Now produces the error message accordingly.

I am attaching the patch again, the only difference is that it also contains the required changes to build/toolset.jam that were present in your first patch but not the others, so that there is one standalone (hopefully final) patch against 1.40.0.

Boris