> From: Erik Hofman > > Jim Wilson wrote: > >>From: Erik Hofman > > >>Which they do, they clearly added modified versions of FlightGear > >>configuration files to the systems and sound directory. > >> > >>If they want us to respect their copyright I expect them to respect ours > >>and make clean which versions are derived from FlightGear and hence are > >>still GPL. > > > > Actually what you are suggesting they do isn't exactly correct. Just > > identifying the changed files is not sufficient. See > clause 2b in the GPLv2. Derived works _must_ also be GPL. > > > > Essentially, to do this right, the original model with textures and > > animations would have to go into a separate zip file > that is licensed as is and then the derived configuration files would go into > another zip file that is GPL'd. > > You can always argue what would be derived work: just the modified files > or the complete package. Personally I would say the first. >
It does not matter, files or package. Only part of the published material must be derived in order for that published material be required to be released under GPLv2. The license is very clearly worded: "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." The published archive (MB339-PAN.zip) is derived from "any part thereof" the FlightGear program. Sure, you can split hairs over wheather you can publish two separately licensed works in the same archive file. I am not trying to be nitpicky, just clear. It certainly seems that the logical thing to do is distribute the non-GPL original artwork and configurations in a seperate zip file. It would be the clearest and simplest way to avoid misunderstandings now and in the future. About misunderstandings, note that they can go both ways. It would not be surprising for someone to mis-interpret the license files in the zip and erroneously modify and release under GPL some of the non-GPL parts of the 339-PAN project. You could have a few generations of derivation in circulation before someone realized that there was a problem. Best, Jim _______________________________________________ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
