Message-Id: <200008101619.MAA10362@delorie.com>
Date: Thu, 10 Aug 2000 19:15:28 +0200
To: gautier DOT demontmollin AT maths DOT unine DOT ch
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From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
CC: djgpp AT delorie DOT com
In-reply-to: <3992A575.DD7D7B9D@maths.unine.ch> (message from Gautier on Thu,
	10 Aug 2000 14:52:04 +0200)
Subject: Re: DJGPP neither running on ms-dos 6.2 nor on caldera-dos 7.03
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> Date: Thu, 10 Aug 2000 14:52:04 +0200
> From: Gautier <gautier DOT demontmollin AT maths DOT unine DOT ch>
> 
> The name crunching algorithm of GNAT is completely automatic, following
> precise rules (with the exception of "a-", "g-" etc. for standard packages).

I understand that.  However, such a feature must be added to the
official GCC distribution, for us to be able to rely on it.

In addition, when you say "make install", the package should
automatically rename the long file names to their ``crunched''
equivalents, so that you could build the package on LFN platforms for
use with DJGPP.  (Alternatively, the renaming could be done right
after unpacking the source distribution, before it is built.)

Without all this being done automatically, such a feature is not
really useful, even though the technology is simple and proven.

(FWIW, right now, GCC cannot even be unpacked, let alone built, on a
non-LFN platform.)

> As for the compilers's behaviour, it is very simple: if a source
> uses SVGA.Effects, the compiler will search for the file svgaeffe.ads
> as Krunch tells it, for SVGA.Effects.IO, it will look for svgeffio.ads
> and nothing else

Note that, while this is a good approach, it still has its drawbacks.
For example, someone might bring an LFN-named version of a file
(e.g. from another platform), but will be unable to use it before
renaming it.  I think it is better to look for both long and short
names.  However, this usually needs quite a bit of heuristic code; see
gxx.c in djlsr203.zip for an example.