Arnulf Christl schrieb:
Michael Schulz wrote:
Dear Arnulf,
in yesterdays irc-meeting we were discussing if and how the header of
each file should or must include the license text.
Most participants favored a link to the license text, that would be
inlcuded in the header in phpDoc style:
/**
* $Id: class_kml_point.php 1948 2008-01-03 16:35:29Z christoph $
*
* @link http://www.mapbender.org/index.php/class_kml_point.php
* @copyright 2002 CCGIS
* @license http://opensource.org/licenses/gpl-license.php
*/
Should a link in the header point to a local file or to an URL (Marc
suggested the URL of the original GPL v3). Both links should also be
possible.
Finally everyone wanted to hear the opinion of an expert (unanimous:
Arnulf), whether there are legal implications that need to be
respected.
It would be great if you could comment on that issue.
Cheers, Michael
Hello, I have been out of the Mapbender context for some time, sorry
for that. I will look into this issue and report back until the next
IRC meeting.
As a side note: We started off as GPL V2 and should carefully consider
whether we want to simply upgrade to V3 without any discussion. I
would suggest to not add any explicit links to GPL V3 right now.
As far as I have understood so far, the only critical point of using
GPLv3 would be, if we wanted to mix Mapbender with other libraries
licensed under GPLv2. At the moment, I don't see this happen: We have
included some LGPL libs (no problem here, right?), some MIT and BSD (no
problem at all I guess).
What I want to know is this: In our license header we explicitly state,
that this software is released under GPLv2 !OR LATER!, which I believe
is crucial. If this was not stated, it could not legally be used within
a GPLv3 program. Is that correct?
So, if we just link to the license, we miss that bit (the "or later"
part). We should consider that GPLv4 will be released at some time in
the future, so keeping the "or later" part would be nice.
Another example: We are using jQuery, which is licensed under GPLv2. So
technically, we would not be able to use it, if it was not using a
double license, GPL and MIT (which is similar to BSD?).
So with my current level of knowledge, I would suggest switching to
GPLv3, linking to the GNU site and keeping the additional license stuff
we use now (for the "or later" part and warranty etc). And as soon as
possible, hand the copyright to OSGeo. Once this is done, we could
change the headers in all Mapbender files according to this. Not for
Mapbender 2.5, rather 2.5.x or 2.6
Please correct me, if I got things wrong. Take a look for yourself. I'm
getting dizzy with all this license mumbo-jumbo.
Best regards, Arnulf.
=======
Hallo Arnulf,
wir hatten gestern im IRC-Chat eine Diskussion, darüber wie und ob im
Header jedes Files der License-Text stehen soll bzw. muss.
Die meisten waren der Meinung, dass ein Link zu dem Text der Lizenz
ausreichen sollte. Der Link würde im phpDoc-Stil in den Header
eingebaut (aus Mail von Christoph) etwa so:
/**
* $Id: class_kml_point.php 1948 2008-01-03 16:35:29Z christoph $
*
* @link http://www.mapbender.org/index.php/class_kml_point.php
* @copyright 2002 CCGIS
* @license http://opensource.org/licenses/gpl-license.php
*/
Dann tauchte die Frage auf, ob der Link zu einem lokalen Lizenz-File
zeigen sollte, oder zu einer URL (Marc schlug den Link zur
Original-GPL v3 vor). Evtl. wäre ja auch beides möglich.
Letztendlich wollten alle noch die Meinung eines Experten (einstimmig:
Arnulf) hören, ob es da noch Legales zu beachten gilt und wenn ja,
was.
Es wäre gut deine Ansicht zu hören.
Viele Grüße, Michael
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