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From: =?iso-8859-15?Q?Yannick_Duch=EAne_=28Hibou57=29?=
 <yannick_duchene@yahoo.fr>
Newsgroups: comp.lang.ada
Subject: Re: SPARK
Date: Wed, 19 May 2010 23:27:29 +0200
Organization: Ada At Home
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Le Wed, 19 May 2010 22:38:07 +0200, Simon Wright <simon@pushface.org> a =
 =

=E9crit:

> Phil Thornley <phil.jpthornley@googlemail.com> writes:
>
>> * Except that, of course, the full source of the Simplifier is
>> available, and there is nothing to stop you making changes to it!
>
> I believe you need the non-free (ie, quite expensive)
Question on side: Why is it always either free or either expansive ? Why=
  =

not multiple levels between both of these extremities ?

> SICSTUS Prolog
> system to build the tools from source (there is SICSTUS-special code
> which doesn't work under GNU Prolog).
You may be true, as I remember an old topic (about two one years ago and=
 a  =

half), of someone getting into trouble trying to build SPARK with his  =

favorite Prolog compiler.

> The GPL SPARK 8.1.1 binary release doesn't run well under Mac OS X Sno=
w
> Leopard (problems with exception handling in 64-bit executables).
Where does the SPARK executable makes use of exceptions ? I have read  =

something asserting the SPARK system is it-self checked to be runtime  =

exceptions free. Perhaps this is in an external dependency part.