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Re: Are projects, which I manage whis tortoise / subversion automaticly under GPL Lizenz?

From: Stephane Bortzmeyer <bortzmeyer_at_nic.fr>
Date: 2005-09-16 16:37:23 CEST

On Fri, Sep 16, 2005 at 09:44:31AM -0400,
 Paul Koning <pkoning@equallogic.com> wrote
 a message of 16 lines which said:

> The point is that the output from Bison is is also under GPL, either
> that, or to make it useful you have to compile or link it with code
> that is under GPL. So you can only use Bison to creat GPL
> applications.

This is absolutely wrong and you should have checked facts before


Can I use GPL-covered editors such as GNU Emacs to develop non-free
programs? Can I use GPL-covered tools such as GCC to compile them?

    Yes, because the copyright on the editors and tools does not cover the code you write. Using them does not place any restrictions, legally, on the license you use for your code.

    Some programs copy parts of themselves into the output for technical reasons--for example, Bison copies a standard parser program into its output file. In such cases, the copied text in the output is covered by the same license that covers it in the source code. Meanwhile, the part of the output which is derived from the program's input inherits the copyright status of the input.

    As it happens, Bison can also be used to develop non-free programs. This is because we decided to explicitly permit the use of the Bison standard parser program in Bison output files without restriction. We made the decision because there were other tools comparable to Bison which already permitted use for non-free programs.

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Received on Fri Sep 16 16:41:11 2005

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