[Scilab-users] Licensing question

[Sylvestre Ledru]

Le 12/04/2013 13:33, Urban Simoncic a écrit :
> Dear Scilab Community,
>
> I have a question about Scilab licensing. I would like to develop an
> application based on Scilab (modified Scilab, GUI as a Scilab function
> and application functionality as a Scilab library and/or external
> module in C) and distribute everything (modified Scilab and my code)
> together as an application. What of that (modified Scilab, GUI as a
> Scilab function, my Scilab library and my external module in C) I have
> to distribute with sources? I am sure that I would have to open
> sources for modified Scilab and I don't care for that. I don't know
> for GUI and Scilab libraries (if necessary, I could open them). But I
> would expect that at least external modules can be distributed in
> binary form only (section 5.3.3. in license). However, I am not sure
> if they can be distributed together with the rest of the application
> that is under CeCILL, or I would have to distribute separately my
> external modules under my license and modified Scilab under CeCILL and
> expect that user will stack all that together?
>
> Is it possible to get "official explantion" for such case, so that I
> can claim it, if I am sued later for violating the license?
I am not a lawyer. So, do not consider that as official.

If you ship Scilab (modified or not) with your code, yes, everything
would have to be published under the CeCILL or GPL license.

However, if you provide an extension and say "you need to have Scilab to
run it", you can use the license you want.

If you need to provide a customized version of Scilab because the
current version of Scilab does not provide the tool that you need, you
can get it touch with us (the Scilab developers) to see your changes
integrated and distributed into Scilab.
Of course, this has to be discussed; we try to keep Scilab distribution
as generic as possible but we welcome new contributions.

Hope this is clear!
Sylvestre