On 01/27/2014 08:04 PM, David Gerard wrote:
> On 27 January 2014 18:02, Vesa <[email protected]> wrote:
>
>> I don't think it matters for code contributions, as the code is already
>> under GPL, and one can only modify that code under the terms of the GPL
>> license, so any contributions to the source code implicitly become GPL.
>
> Copyright isn't actually "viral" like that - this does *not* release
> an outside contribution under the GPL.
The copyright stays with the author, but even so, the license still
applies. You simply can't make modifications to GPL code and then claim
those modifications aren't under GPL.
In order to make any modifications (and publish those modifications,
private ones for your own use are different) to GPL-licensed code, you
must accept the GPL. The GPL states (I'm quoting v2 since it's relevant
here):
*2.* You may modify your copy or copies of the Program or any
portion of it, thus forming a work based on the Program, and copy
and distribute such modifications or work under the terms of Section
1 above, provided that you also meet all of these conditions:
*a)* You must cause the modified files to carry prominent
notices stating that you changed the files and the date of any
change.
*b)* You must cause any work that you distribute or publish,
that in whole or in part contains or is derived from the Program
or any part thereof, to be licensed as a whole at no charge to
all third parties _under the terms of this License._
(emphasis mine.)
Section 5 is also relevant:
*5.* You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License._Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
_
(again emphasis mine.)
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