RE: ghc 6.0.1 and Mac OS X 10.2.6 build

> :-P * * * Seriously: Should the configure script run tests 
> via rsh/ssh? And
> what if the target platform can't be reached remotely? I've 
> never seen such
> an autoconf trick before...

Just provide a script that can be run (by hand) on the target platform
and a way to port the results back to the host platform.  This is
currently what we do for cross-compiling GHC (see the new instructions
in the Building Guide for unregisterised bootstrapping of GHC), but
currently we make some broad (and dodgy) assumptions:

  - we assume that config.mk pertains the the host system
  - we assume that config.h pertains to the target system

fixing this up would be good.

Also the configure script can't currently handle different values for
--target and --host: doing so doesn't look too hard.

Cheers,
        Simon