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Re: GPL and other licences
From: |
Alfred M. Szmidt |
Subject: |
Re: GPL and other licences |
Date: |
Fri, 03 Feb 2006 02:52:15 +0100 |
> This is not what you asked, you asked if you could combine
> non-free software with a GPLed work internally. The GPL does not
> allow this, so you have no permissions to do so be it for your
> private use or not.
Cite me a provision of the GPL that does not allow this.
Preferrably support your answer with a quote of a sentence or two.
Are you really disputing the fact that one can combine non-free work
with a GPLed program?
I'd like to incorporate GPL-covered software in my proprietary
system. Can I do this?
You cannot incorporate GPL-covered software in a proprietary
system. The goal of the GPL is to grant everyone the freedom to
copy, redistribute, understand, and modify a program. If you
could incorporate GPL-covered software into a non-free system,
it would have the effect of making the GPL-covered software
non-free too.
A system incorporating a GPL-covered program is an extended
version of that program. The GPL says that any extended version
of the program must be released under the GPL if it is released
at all. This is for two reasons: to make sure that users who
get the software get the freedom they should have, and to
encourage people to give back improvements that they make.
However, in many cases you can distribute the GPL-covered
software alongside your proprietary system. To do this validly,
you must make sure that the free and non-free programs
communicate at arms length, that they are not combined in a way
that would make them effectively a single program.
The difference between this and "incorporating" the GPL-covered
software is partly a matter of substance and partly form. The
substantive part is this: if the two programs are combined so
that they become effectively two parts of one program, then you
can't treat them as two separate programs. So the GPL has to
cover the whole thing.
If the two programs remain well separated, like the compiler
and the kernel, or like an editor and a shell, then you can
treat them as two separate programs--but you have to do it
properly. The issue is simply one of form: how you describe
what you are doing. Why do we care about this? Because we want
to make sure the users clearly understand the free status of
the GPL-covered software in the collection.
If people were to distribute GPL-covered software calling it
"part of" a system that users know is partly proprietary, users
might be uncertain of their rights regarding the GPL-covered
software. But if they know that what they have received is a
free program plus another program, side by side, their rights
will be clear.
- Re: GPL and other licences, (continued)
- Re: GPL and other licences, David Kastrup, 2006/02/01
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/01
- Re: GPL and other licences, David Kastrup, 2006/02/05
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/02
- Message not available
- Re: GPL and other licences, Stefaan A Eeckels, 2006/02/02
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/02
- Re: GPL and other licences, Alexander Terekhov, 2006/02/03
Re: GPL and other licences, Isaac, 2006/02/01
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/01
- Message not available
- Re: GPL and other licences, Isaac, 2006/02/02
- Re: GPL and other licences,
Alfred M. Szmidt <=
- Message not available
- Re: GPL and other licences, Isaac, 2006/02/02
- Re: GPL and other licences, Alexander Terekhov, 2006/02/03
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/03
- Message not available
- Re: GPL and other licences, David Kastrup, 2006/02/03
- Re: GPL and other licences, Alexander Terekhov, 2006/02/03
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/03
- Re: GPL and other licences, Isaac, 2006/02/03
- Message not available
- Re: GPL and other licences, Isaac, 2006/02/03
- Re: GPL and other licences, Alfred M. Szmidt, 2006/02/04
Message not availableRe: GPL and other licences, Isaac, 2006/02/03