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List:       koffice-devel
Subject:    Re: Apache POI License
From:       David Faure <david () mandrakesoft ! com>
Date:       2002-12-16 9:04:58
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On Sunday 15 December 2002 20:22, Philipp Müller wrote:
> Am Samstag, 14. Dezember 2002 22:24 schrieb TJ Mather:
> > A little while back, we were discussing the possibility of using Apache
> > POI, and the issue of the Apache license being compatible with the LGPL
> > came up.  After mailing a couple of licensing mailing lists, and
> > re-reading the LGPL license, it appears that the licenses are compatible.
> >
> > Would it be OK to go ahead with the Apache POI KSpread Excel export
> > filter?
> 
> Hello TJ,
> 
> the short story is: 
> - If KSpread is LGPL, then I as well see now, that KSpread can be linked to 
> POI (with QPL - LGPL - AFL).
> - If KSpread is GPL, then not.
> 
> Additional, this may get problems when we need to link to libraries which are 
> compatible with LGPL but not with the QPL. I didn't find any notice about 
> QPL-AFL problems, so I think this is save atm.
> 
> Currently, all of KSpread files have LGPL copyright notes in the sources 
> (beside of what our about states, I think this one needs to be "fixed" here).
> 
> But there is only one problem. It's our KChart interface. KChart uses KdChart 
> which is GPL.
> While all others apps (e.g. KWord, KFormula) are dlopen'd when embedded, we 
> have additional a direct interface to KdChart for the interactive changes of 
> the data in KSpread.
> This interface is in koffice/interfaces, but currently doesn't have a 
> copyright notice (so there maybe a problem as well). 

Kalle just agreed, and I made the KoChart interface LGPLv2 on his behalf.

> Additional, this 
> interface needs to be checked, if the linking of KdChart allows a LGPL.
KdChart is dlopened, not linked to (by kspread). All I know is that the situation
around dlopening is pretty messy though. Ask kde-licensing@ if you want
to find out more about that...

- -- 
David FAURE, david@mandrakesoft.com, faure@kde.org
http://people.mandrakesoft.com/~david/
Contributing to: http://www.konqueror.org/, http://www.koffice.org/
KOffice-1.2.1 is available - http://download.kde.org/stable/koffice-1.2.1/
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