[Paraview] legal summary

[David E DeMarle]

Mike I thought you said you weren't a lawyer? :)

On Wed, Nov 5, 2008 at 11:11 AM, Michael Jackson
<mike.jackson at bluequartz.net> wrote:
> You are distributing the code to yourself. Make sure you distribute the
> source code to yourself to be in compliance with GPL.  ;-)
>
> Mike
>
> On Nov 5, 2008, at 10:59 AM, Dominik Szczerba wrote:
>
>> Actually that was never clear to me in GPL in general. If I develop
>> something for in-house use only then there is nobody to give my code to. But
>> the code is potentially employed for commercial purposes (including
>> generation of income) so it IS being used as a commercial tool, only not
>> distributed.
>>
>> <sigh/>
>>
>> Dominik
>>
>> Berk Geveci wrote:
>>>
>>> One comment:
>>>>
>>>> 2) You do not have a Qt license and you have modified/derived Qt based
>>>> code:
>>>> You must make your source code available to users under the terms of the
>>>> GPL
>>>> (including ParaView source, which they do anyway).
>>>
>>> The GPL license says that you have to provide the source under GPL to
>>> those you distribute binaries. If you are developing a
>>> plugin/extension for in-house use using GPL'ed Qt, you do _not_ have
>>> to distribute your source to the outside world. Trolltech has never
>>> been clear on this issue. They say that if you are developing
>>> commercial tools, you have to have the commercial license. This is
>>> only true when it comes to distribution. It does not apply to in-house
>>> tools.
>>> -berk
>>> On Wed, Nov 5, 2008 at 8:35 AM, John Biddiscombe <biddisco at cscs.ch>
>>> wrote:
>>>>
>>>> To summarize, within the framework of paraview plugin development
>>>>
>>>> 1) You do not modify/derive from or create any Qt based code :
>>>> You can distribute your software under your own terms, GPL or other.
>>>> Users
>>>> must have access to the ParaView source, which they do anyway, your
>>>> software
>>>> does not have to be open source.
>>>>
>>>> 2) You do not have a Qt license and you have modified/derived Qt based
>>>> code
>>>> :
>>>> You must make your source code available to users under the terms of the
>>>> GPL
>>>> (including ParaView source, which they do anyway).
>>>>
>>>> 3) You have a Qt license:
>>>> You can keep the source code closed and distribute anything (Qt based or
>>>> otherwise) you want under your own terms.
>>>>
>>>> 4) You may separate plugins which make use of Qt based code from others
>>>> which do not, and distribute them on different terms, according to the
>>>> first
>>>> 3 statements.
>>>>
>>>> I welcome corrections to the above 4 statements, preferably in as simple
>>>> a
>>>> form as possible.
>>>>
>>>> JB
>>>>
>>>> --
>>>> John Biddiscombe,                            email:biddisco @ cscs.ch
>>>> http://www.cscs.ch/
>>>> CSCS, Swiss National Supercomputing Centre  | Tel:  +41 (91) 610.82.07
>>>> Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82
>>>>
>>>>
>>
>> --
>> Dominik Szczerba, PhD
>> Computational Physics Group
>> IT'IS Foundation for Research
>> http://www.itis.ethz.ch
>
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-- 
David E DeMarle
Kitware, Inc.
R&D Engineer
28 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-371-3971 x109