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Re: More GPL questions

From: Stefaan A Eeckels
Subject: Re: More GPL questions
Date: Mon, 16 Oct 2006 21:12:41 +0200

On 16 Oct 2006 07:37:56 -0700
"Louis B. (ldb)" <> wrote:

> I have a proprietary sdk that is being distributed. As part of this
> sdk, I have an /examples/ folder where I include source code showing
> how to use various elements of the sdk in various display
> enviornments. We have on example based on X11, another for OpenGL. I
> want to include a Qt example with my code, as well, since there has
> been some interest in it. The actual sdk being released contains no
> GPL components, and this would merely be an example of how to use the
> SDK and Qt. This example program would dynamically link to both Qt
> and my sdk's library. Does including this example source code in my
> distrubuted tarball put the entire thing, including the sdk, under
> the GPL? 

Of course not - you're not including Qt, are you? If it's source code
you wrote yourself, that happens to call Qt routines, then it is not
subject to the Qt license.

> If it does, I'll be forced to leave out the Qt example source,
> altogether, and that seems silly to me.

The source code is not subject to the license of the libraries it
calls. And even if it were, simply placing the example under the GPL
would be sufficient - why do you think that the license of the example
would also apply to your library? Licenses aren't like viruses that
jump from library to library through example programs.

Take care,

Stefaan A Eeckels
Modesty personified:
This was a thread between ignorant people until I jumped in. 
                             -- richard in gnu.misc.discuss

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