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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: GNAT GPL is not shareware
Date: Wed, 7 Jan 2015 16:27:50 -0600
Organization: Jacob Sparre Andersen Research & Innovation
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Date: 2015-01-07T16:27:50-06:00
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"Björn Lundin" <b.f.lundin@gmail.com> wrote in message 
news:m8jar2$ceu$1@dont-email.me...
> On 2015-01-07 13:23, sbelmont700@gmail.com wrote:
...
>>start using a
>>different compiler and nobody notices until it's too late.
>
> get real.

Right. I can't speak for GNAT, but for Janus/Ada, incompatible compiler 
versions simply can't work together. All of the intermediate files have 
version checks, so you get an instant version mismatch error. That happens 
to me all of the time, because I forgot to run the environment setting batch 
before running a compile or (more likely make). Big whoop.

And your solution to this "just barely a problem" is to create a massive 
whiz-bang program that has no chance of being customizable to the extent 
that I can do with just a few batch files or shell scripts. That's not 
likely to fly; after all GNAT's "source model" of compilation was a reaction 
to the much fancier (and complicated) library management techniques that 
almost all Ada 83 compilers used. I don't think people suddenly want to go 
back and revisit all of that. There is almost no evidence that a 
semantics-based editor would be more usable than text, and it's not like 
people have tried. (There were lots of such systems in the 1980s; I've used 
several and quite honestly, text source is better.)

                                         Randy.