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From: "Ludovic Brenta" <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: Next Ada compiler for Debian: the votes so far
Date: 21 Sep 2005 00:37:52 -0700
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Date: 2005-09-21T00:37:52-07:00
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Bj=F6rn Persson a =E9crit :
> Ludovic Brenta wrote:
> > Three-stage transition to gnat-3.4, then gnat-4.0, then gnat-4.1.
> > Pros: [...] ASIS and GLADE are probably
> > easy to port from GNAT GPL Edition.
>
> I understand how they would probably be easy to port to 3.4, but do you
> really mean that it would be easier to port them to 4.1 in this scenario
> than in the one-stage and two-stage scenarios?

Well, it was late in the evening and my mind was getting sloppy.  I
meant
to say that ASIS and GLADE could be ported to 3.4, and provide a
fall-back
in case subsequent porting to 4.0 or 4.1 proved difficult.  Also, the
porting effort to 3.4 would allow me (and anyone who contributes) to
gain some valuable experience with them, thus making porting to 4.0 or
4=2E1 less difficult.

I forgot to mention the other possible two-stage transition: to
gnat-3.4
starting in October 2005, then directly to 4.1 in May-June 2006. The
more
I think about it, the more it appears to provide the best balance
between
risk (3.4 acts as the fall-back solution), platform support, Ada 200y
features, and workload.  The first stage would not be intended to bring
Ada
200y, only new platforms, because as I said the Ada 200y features in
gnat-3.4 are already obsolete; the second stage, to 4.1, would provide
up-to-date Ada 200y features.

--=20
Ludovic Brenta.