From xemacs-m  Fri Jan 24 08:42:51 1997
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Date: Fri, 24 Jan 1997 06:41:09 -0800
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From: "William M. Perry" <wmperry@aventail.com>
To: Carsten Leonhardt <leo@arioch.tng.oche.de>
Cc: xemacs-beta@xemacs.org
Subject: Re: Is the user always right wrt. configuration?
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Carsten Leonhardt writes:
>I looked into autoconf, tested around a bit, and now think that I
>could add autodetection of canna, and probably fix the autodetection
>of png.
>
>Now, if the user says "--with-canna=yes", and I can't see how xemacs
>could possibly compile with that option, should I
>
>1 - error out
>2 - ignore the user, and set it to "no"
>3 - warn the user
>4 - "The user is always right" and leave it alone
>
>Or is it too late for additions like that?

  The user is always right.  Autodetection should only ever happen if the
user doesn't specify the option.  You should error out if they specify
mutually exclusive options (ie: --with-x=no --with-png)

-Bill P.

