Follow-up Comment #20, task #4371 (project administration): Are those your images? If you are the author, you can simply relicense them. I thought they came from Singular or one of the test projects.
Anyhow, the only official FSF statement about the Creative Commons licenses I know of is at the bottom of this page: <http://www.gnu.org/licenses/license-list.html>. Unfortunately it isn't very specific about what makes it GPL incompatible. Perhaps: 1. Shipping something under the GPL and something under CC-SA make the whole a single "derivative" product. 2. One or both licenses require that the derivative product be licensed under its own license. 3. One or both licenses prevent relicensing. Thus, CC-SA would require Texi2HTML be released under CC-SA and/or GPL would require you relicense images under the GPL, and one license or the other forbids this from happening? Yes, here it is. From the CC-SA license: 1.a. "Collective Work" means a work, such as a periodical issue, anthology or encyclopedia, in which the Work in its entirety in unmodified form, along with a number of other contributions, constituting separate and independent works in themselves, are assembled into a collective whole. A work that constitutes a Collective Work will not be considered a Derivative Work (as defined below) for the purposes of this License. 1.b. "Derivative Work" means a work based upon the Work or upon the Work and other pre-existing works, such as a translation, musical arrangement, dramatization, fictionalization, motion picture version, sound recording, art reproduction, abridgment, condensation, or any other form in which the Work may be recast, transformed, or adapted, except that a work that constitutes a Collective Work will not be considered a Derivative Work for the purpose of this License. For the avoidance of doubt, where the Work is a musical composition or sound recording, the synchronization of the Work in timed-relation with a moving image ("synching") will be considered a Derivative Work for the purpose of this License. ... 4.b. You may distribute, publicly display, publicly perform, or publicly digitally perform a Derivative Work only under the terms of this License, a later version of this License with the same License Elements as this License, or a Creative Commons Commons license that contains the same License Elements as this License (e.g. Attribution-ShareAlike 2.0 Japan)... Reading a little deeper, there appears to be an exception for "Collective Works", but I agree with the FSF that it is somewhat vague, at least in the respect that it does not clearly put software such as Text2HTML in either the Collective or Distributed Works categories. Thus, the CC-SA may have to be extended to cover all of a product the art is distributed with, such as Texi2HTML, which might also extend the "Collective Work" loophole to cover Texi2HTML, thus violating the GPL by adding a loophole. Regardless, if you are the author, you can relicense the images. FSF recommmends the Free Art License (FAL) <http://artlibre.org/licence/lalgb.html> in the commentary on CC-SA. If you are the author of the images and particularly attached to the CC-SA, perhaps you could use something like Perl's Artistic License, and allow distribution of your images "Under the CC-SA 2.0 or the FAL, as you see fit." _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/task/?func=detailitem&item_id=4371> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
