[gameprogrammer] Re: GPL Questions

On Tue, 2004-05-25 at 19:44, Kevin Jenkins wrote:
> Would it be permissible to have two licenses for the same software, one GPL
> and one not?  The GPL does not allow use in proprietary software.  So what
> if I had the GPL license for those that which to use it, and another license
> for those that which to use proprietary software?

The owner of the copyright has the right to distribute it under any
license he chooses. Including using multiple licenses. Take a look at
QT, the toolkit used by KDE. The Linux version is released under the
GPL. The Windows version is released under a commercial license and
costs something like USD 1000. I asked the owners of QT if it was legal
to port the GPL version to Windows (I knew it was, but I wanted to see
their answer.) The said, yes, it is GPLed so feel free to port it to
Windows and give it away. 

It is perfectly legal to both sell it under a commercial license and
give it away under the GPL.

                Bob Pendleton

> 
> ----- Original Message -----
> From: "Robbert de Groot" <zekaric@xxxxxxxx>
> To: <gameprogrammer@xxxxxxxxxxxxx>
> Sent: Tuesday, May 25, 2004 4:49 PM
> Subject: [gameprogrammer] Re: GPL Questions
> 
> 
> > <IANAL>
> >
> > If I'm reading your message correctly, you're asking if a GPL program can
> > use non GPL library and what effect that has on the library.
> >
> > I don't think the GPL covers this case really.  It's usually the other way
> > around when people ask.  My guess is that the program is still GPL but
> > people will scoff at it for not using ALL GPL code; meaning the non GPL
> > library.  However the library can still be under it's own license as long
> as
> > it accounts for being linked in with a GPL program.
> >
> > I'm not sure if the program can be considered completely GPL in this case.
> > It's not usual.
> >
> > </IANAL>
> 
> 
> 
> 
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+--------------------------------------+
+ Bob Pendleton: writer and programmer +
+ email: Bob@xxxxxxxxxxxxx             +
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