RE: [tdf-discuss] Re: [Libreoffice] Proposal to join Apache OpenOffice

Dennis E. Hamilton wrote:
> If I am the copyright holder of my code, I can issue it with a license
> that requires anyone who modifies my source code to provide me with
> the changes to my code that they make.  ...
> PS: It is the case that neither the GPL nor APLv2 have such a
> compulsory condition and it would be interesting to see what the FSF
> would say in the event someone sublicensed a GPL derivative in that
> manner.

Adding to what Greg already wrote (i.e., you need that a distribution of
the software happens in order to enforce this), this requirement is
considered compatible with Free Software licenses. See
http://www.gnu.org/philosophy/free-sw.html (search for "previous
developer" or read the last line about revision 1.11).

But it is not possible to attach it to existing LGPL3/GPL3 code since it
would violate section 10 of GPL3:
http://www.gnu.org/licenses/gpl-faq.html#OrigBSD

Regards,
  Andrea.


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