[GRASS-dev] v.digit: Qt or wxWidgets

Radim Blazek radim.blazek at gmail.com
Mon May 22 12:27:59 EDT 2006


On 5/22/06, Laurent C. <lrntct at gmail.com> wrote:
>
> 2006/5/22, Radim Blazek <radim.blazek at gmail.com>:
> > On 5/22/06, Glynn Clements <glynn at gclements.plus.com> wrote:
> > >
> > > Radim Blazek wrote:
> > >
> > > > What do you mean exactly. It is GPL on all platforms.
> > > >
> > > > > There are
> > > > > subtle but maybe relevant differences in the licensing scheme and it
> > > > > seems that there is always a difference between the open source and
> the
> > > > > commercial versions. But I think Radim is more qualified to judge
> this.
> > > >
> > > > I cannot say if there are differences, but I don't believe.
> > > > We are using GPL version on all platforms.
> > > > There are some additional packages (QSA, Qt Solutions, Teambuilder)
> > > > which are not available under GPL on all platforms but the Qt, Qtopia
> > > > and Qtopia SDK will be most probably the same on all platforms
> > > > and under all licenses.
> > > >
> > > >
> http://www.trolltech.com/products/qt/licenses/licensing/matrix
> > > >
> > > > I don't care which toolkit you choose. I just don't like to see
> > > > that some people for some strange reasons repeat to say that
> > > > Qt is not free, which is not true.
> > >
> > > The licensing information on the TrollTech site suggests that the
> > > licence for the Open Source edition isn't actually the GPL, but a
> > > requirement that you publish your code under the terms of the GPL.
> > >
> > > The GPL itself does not require that you publish your code at all. You
> > > are free to create derivative works and not publish them at all. /If/
> > > you publish them, you must do so under the terms of the GPL.
> > >
> > > TrollTech's site suggests that you cannot develop "in-house"
> > > applications using the Qt Open Source edition (and you can't obtain a
> > > commercial licence for software which was originally developed using
> > > the Open Source edition). In which case, the licence isn't even
> > > GPL-compatible.
> >
> > I cannot find anything like that. The opensource package is licenced under
> > GPL and I don't see any exception. Where is written that you
> > must publish your code even if you do not distribute the application
> > or that you cannot develop and use "in-house" application using open
> source
> > edition of Qt?
> >
> > Radim
>
> There is something like that here
> (http://www.trolltech.com/products/qt/licenses/licensing/opensource
> )
>
> "If you wish to use the Qt Open Source Edition, you must contribute all your
> source code to the open source community in accordance with the GPL when
> your application is distributed."
> "when your application is distributed". There are no licensing problems for
> me.
> I've just dowloaded the package and the lincense packaged is the GPL.

Yes, "when your application is distributed" and "in accordance with the GPL"
so it is GPL, nothing more.

Radim




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