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Re: Questions about a special exception to the GPL
From: |
Andrew Haley |
Subject: |
Re: Questions about a special exception to the GPL |
Date: |
Wed, 08 Dec 2010 15:56:18 -0000 |
User-agent: |
tin/1.9.2-20070201 ("Dalaruan") (UNIX) (Linux/2.6.31.9-174.fc12.x86_64 (x86_64)) |
Tassilo Horn <tassilo@member.fsf.org> wrote:
> Hi,
>
> I have a licensing question. We have a java framework for model-driven
> development [1]. That framework is currently licensed as "GPLv2 or
> later". In the last few years, we've encountered some difficulties with
> this licensing choice, because we face more and more needs to use that
> framework in applications built on the Eclipse platform, which uses the
> free but incompatible EPL license.
>
> So we are thinking about upgrading to GPLv3 (or later) with a custom
> exception, which might be like that:
>
> Linking this library statically or dynamically with other modules is
> making a combined work based on this library. Thus, the terms and
> conditions of the GNU General Public License cover the whole
> combination.
>
> As a special exception, the copyright holders of this library give you
> permission to release your combined work using this library under any
> free software license listed at
>
> http://www.gnu.org/licenses/license-list.html
>
> no matter if GPL-compatible or GPL-incompatible, unless you apply
> modifications to the library's source code itself.
>
> Does that make sense?
I don't think so, since you have no idea what licences the FSF might
add in the future, and in theory gnu.org might disappear altogether.
It surely makes more sense to dual-license your library, GPLv3 + EPL.
Andrew.