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To:	Vin Shelton <acs AT xemacs DOT org>
Cc:	cygwin AT cygwin DOT com, xemacs-beta <xemacs-beta AT xemacs DOT org>
Subject:	Re: Cannot build 21.4.16 under cygwin (gcc 3.3.3)
References:	<f5bwtur95e1 DOT fsf AT erasmus DOT inf DOT ed DOT ac DOT uk> <f5bk6qr94ev DOT fsf AT erasmus DOT inf DOT ed DOT ac DOT uk> <20050105210221 DOT GA2428 AT tishler DOT net> <f5bfz1f8obh DOT fsf AT erasmus DOT inf DOT ed DOT ac DOT uk> <20050106130856 DOT GA1068 AT tishler DOT net> <f5bacrm64gj DOT fsf AT erasmus DOT inf DOT ed DOT ac DOT uk> <20050107121026 DOT GA3760 AT tishler DOT net> <f5b6529xekw DOT fsf AT erasmus DOT inf DOT ed DOT ac DOT uk> <545r7kxnk8q DOT fsf AT xemacs DOT org>
From:	ht AT inf DOT ed DOT ac DOT uk (Henry S. Thompson)
Date:	Sun, 09 Jan 2005 15:28:11 +0000
In-Reply-To:	<545r7kxnk8q.fsf@xemacs.org> (Vin Shelton's message of "Fri, 07 Jan 2005 13:53:57 -0500")
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Vin Shelton writes:

> ht AT inf DOT ed DOT ac DOT uk (Henry S. Thompson) writes:
>
>>
>> But of course then I'm stuck with other code that won't run because of
>> the two-different-bases problem.
>>
>> Anyway, thanks _very_ much for your help, it sounds like the xemacs
>> folks are really where this needs to be solved.  Point is, this is a
>> regression -- xemacs-21.4.15 works OK (mind you, I haven't tried
>> recompiling it with gcc-3.3.3).
>
> Henry,
>
> AFAIK, we didn't make any changes in 21.4.16 that would account for
> this.  As an experiment, can you try to build 21.4.15 with gcc-3.3.3?
> I would be surprised if that worked.

OK, victory at last.  It _is_ a rebase problem, but not with xemacs as
such, rather GTK.  The clue was that 2.4.15 _did_ rebuild OK when all
I did was 'make clean && make', so I looked at the differences between
the two src directories with a microscope, and noticed that 2.4.16 was
using libtiff3.dll and jpeg62.dll from GTK and (because I had built it
before I installed GTK) 2.4.15 was not.

Now I had rebased those two by hand (because for reasons I can't now
figure out rebaseall didn't do them -- pbly because I installed GTK
'by hand' as it were, not via the package mechanism), but I had _not_
checked _their_ dependencies, and sure enough:

  1) libtiff3 uses GTK's zlib1.dll
  2) rebasing zlib1.dll solves the problem.

Phew!

So let's hope this thread will help anyone with the same problem. 

Thanks again for patient suggestions which eventually led to the
solution.

ht
-- 
 Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                     Half-time member of W3C Team
    2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
            Fax: (44) 131 650-4587, e-mail: ht AT inf DOT ed DOT ac DOT uk
                   URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]

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