From octave-maintainers-request at bevo dot che dot wisc dot edu  Sat Jul 22 17:26:45 2000
Subject: Re:  new delaunay
From: pkienzle at kienzle dot powernet dot co dot uk (Paul Kienzle)
To: etienne at isr dot isr dot ist dot utl dot pt, kahacjde@calvados.zrz.TU-Berlin.DE,         octave-maintainers@bevo.che.wisc.edu
Date: Sat, 22 Jul 2000 23:35:54 +0100 (BST)

From: Etienne Grossmann <etienne at isr dot isr dot ist dot utl dot pt>
>> For the 'lawyers': could you check the license, is it indeed GPL
>> compatible?
>
>
>  qhull/REGISTER.txt says : 
>=================================================================
>Dear User of Geometry Center Software:
>
>We would like to find out how you are using our software.  Think of
>Geometry Center software as a new kind of shareware: you share your
>science and successes with us, and we share our software and support
>with you.  The Geometry Center is funded by the National Science
>Foundation, and it is important that we be able to report to NSF the
>ways in which our software is being used.
>
...
>
>If you use Geometry Center software, please send us a letter telling
>us what you are doing with it.
>
>
>Thank you!
>======================================================================
>
>  So the best is probably to ask them if they mind having qhull 
>bundled with octave. They might be happy if it were.

However, registering is not actually a requirement of the license.
The license itself is freer than the GPL.  If you distribute a modified
version, you only have to say where to obtain the original, you do not
actually have to distribute the modified source.

	- Paul

====
This software includes Qhull from The Geometry Center.  Qhull is 
copyrighted as noted above.  Qhull is free software and may be obtained 
via anonymous ftp from geom.umn.edu.  It may be freely copied, modified, 
and redistributed under the following conditions:

1. All copyright notices must remain intact in all files.

2. A copy of this text file must be distributed along with any copies 
   of Qhull that you redistribute; this includes copies that you have 
   modified, or copies of programs or other software products that 
   include Qhull.

3. If you modify Qhull, you must include a notice giving the
   name of the person performing the modification, the date of
   modification, and the reason for such modification.

4. When distributing modified versions of Qhull, or other software 
   products that include Qhull, you must provide notice that the original 
   source code may be obtained as noted above.

5. There is no warranty or other guarantee of fitness for Qhull, it is 
   provided solely "as is".  Bug reports or fixes may be sent to 
   qhull_bug at geom dot umn dot edu; the authors may or may not act on them as 
   they desire.