Dear Brad,
Thank you so much for your quick feedback.
You are right, the information of the FSF about license compatibility is
related to the GPL.
However, the situation is pretty much the same since both licenses have the
same copyleft clause
and do not allow further restrictions, see below.
Our feeling was that this is a known issue anyway, see also here:
* https://opensource.stackexchange.com/a/12802
* https://www.mend.io/resources/blog/top-10-apache-license-questions-answered
So, is there a problem stating that we are licensing geotools under the
LGPLv2.1-or-later
(as for many shipped files) or do we have to fallback to LGPLv2.1-only (as
stated in a different
set of shipped files)?
It seems to be just a question of what you want for the whole geotools, a
restriction to LGPLv2.1
or not. This is a technical (maybe small) difference that (at least as we
understand it) might
prevent commercial platforms from using the code.
All the best
Christian Raack
--------------
GPL-2.0:
Sec. 2 b)
b) 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.
Sec. 6
You may not impose any further restrictions on the recipients' exercise of the
rights granted herein.
LGPL-2.1
Sec. 2 c)
c) You must cause the whole of the work to be licensed at no charge to all
third parties under the terms of this License.
Sec. 10
You may not impose any further restrictions on the recipients' exercise of the
rights granted herein.
The essential difference between LGPL and GPL, the exception in clause 6 of
LGPL-2.1,
does not matter if the code is used under an incompatible license within the
library and is not merely linked.
Let us know if you have any further questions in this regard.
Am 15.02.23 um 01:04 schrieb Brad Hards:
On Tuesday, 14 February 2023 9:53:08 PM AEDT Christian Raack wrote:
This however is not consistent, as Apache 2.0 is not compatible with
LGPLv2.1-only, see for instance
https://www.gnu.org/licenses/license-list.html.en#apache2.
I am not sure that this is true. The reference you are providing does not say
LGPL. It says GPL. Can you explain why you think the Apache 2.0 license is not
compatible with LGPL v2.1?
Brad
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