Jens Lautenbacher schrieb:
On Mi, 2007-02-28 at 11:54 +0100, Dietrich Streifert wrote:
Hi Jens,
Thank you for your elaborately answer.
So let's get to a practical example:
I'm going to develop a web application which uses qooxdoo as UI/AJAX
framework and as building system. I'm creating my own widget/class
hierarchie which inherits from qooxdoo classes. This web application
will be sold and deliverd to a customer which installs the web
application on his webservers. The customer will get the web
application as a compiled/optimized/obfuscated JavaScript file (built
by the qooxdoo build system) with additional html files and a backend
(java/php/perl).
What do I need to do in order to fullfill the EPL/LGPL license of
qooxdoo?
Is it enough to add something to the web applications license file
like:
"This software was created using the qooxdoo AJAX framework
http://www.qooxdoo.org which is dual licenced
under the LGPL license http://www.gnu.org/licenses/lgpl.html and EPL
license http://www.eclipse.org/legal/epl-v10.html.";
Do I additionally have to supply the customer with the qooxdoo source
code or is it enough to point the customer to the qooxdoo web site
where he is able to download the code?
Both is OK from my point of view.
Beside all licensing stuff it's even preferable from my point of view to
push people to our website, so if they are really interested in qooxdoo
they'll usually get a newer version than they had when you only supply
your current package.
Agreed! So I will just "deliver" the above passage in my license file.
BTW: Is there a nice "powered by qooxdoo" icon?
The only problem that I can see with the LGPL is to make sure that the
customer is able to replace the LGPL lib with a changed version. This
seems to be a bit problematic with the way the qooxdoo build process
works, and I currently don't see a perfect answer.
So what does the dual licensing mean to this point? As I understood EPL
does not include the "replaceable library problem".
Will EPL in this case take precedence over LGPL?
The LGPL or similar licenses have a well known problem with things like
JavaScript (or even other OO languages) because all the wording with
linking and so on is clearly more suited to old fashioned C programming,
where you have object files that could be relinked and so on - even C++
doesn't really work correctly with the license wording as far as I
remember.
For us, the spirit of language was always the guiding principle: We want
to encourage even commercial use, but we want to prohibit that anybody
changes qooxdoo ITSELF in a closed, proprietary way.
That is very clear. qooxdoo should remain open.
By the way: The customer of your customer (the user of the webapp) is of
course in no way the target of the licensing stuff. The indirect use of
qooxdoo does in no way create an obligation for you to provide anything
(even information) about qooxdoo or it's license to them.
jtl
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Mit freundlichen Grüßen
Dietrich Streifert
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