Tomas Vondra wrote on 24.10.2011 20:11:
On 24 Říjen 2011, 19:44, Thomas Kellerer wrote:
Pavel Stehule wrote on 24.10.2011 12:19:
there is not clean who is customer and what is one unit. If you
distribute PostGIS inside your application as one unit to customer,
then your application should to use GPL.
So if we only distribute our application and require the customer to
install Postgres and PostGIS, then it shold be fine?
I think you should actually read GPL license, because you're obviously
confused by how it works - especially note the notion of "derived work".
Derived work means that you take a GPL licensed software and modify it. In
this case you're required to distribute the source code (again under GPL)
to those who received the binary (legally). In case of PostGIS this would
mean you modify the PostGIS source code itself, which is very unlikely I
guess.
Thanks.
My understanding of "derived work" was, that anything that was "compiled" against a GPL licensed piece of software and thus will *only* run with that software is considered "derived". If derived work only applies to changes of the original software, then this is of course no problem.
Regards
Thomas
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