[OpenBIOS] patch: machine dependent config

[Segher Boessenkool]

Stefan Reinauer wrote:
> 
> * Segher Boessenkool <segher at chello.nl> [020607 02:25]:
> > > I had something in mind which does not need any external functionality
> > > but put everything to a seperate file so we don't need to mix forth
> > > implementation and platform adoptions.
> >
> > Unfotunately, we can't;  we need to find out if the libgcc contains
> > functions to divide TImode numbers, for example.  So it'll have to
> > be done outside of the normal compile.
> 
> Except we rely on compiler defines and prerequisites to get towards a
> defined build set (which probably sucks). If we have to use this
> functionality anyways, it might be interesting to look at autoconf.
> But then again we won't get rid of all perl stuff, so using autoconf
> just adds another player to the game.

Please let's not use autotools :)

> Just a dumb idea, could we rewrite the preprocessing and testing
> completely in C? I know that there are a lot of issues with perl on

Nope, cpp can't do all that's necessary.  Btw, once we have a working
Forth compiler, we can use that to bootstrap itself :)

> newer platforms, which could make it hard to get paflof running on new
> machines, even if we already have a gcc. Ugly though. If this is

Cross-compilers save the day :)

> considerable, we don't want it before we have some systems actually
> booting.
> 
> > > I know. But if we want to support IEEE 1275-1994 completely we will need
> > > this anyways and it might be worth it having this stuff working as soon
> > > as we have the compiler and fcode engine up and running. (which is
> > > probably not that far from now)
> >
> > Not far at all, not far at all... :)
> 
> Great work!

I hope to finish the "Forth command group" today :)


Segher

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