License Statement Clarification in KArchive

[Christophe Giboudeaux]

On vendredi 7 février 2020 09:27:49 CET David Faure wrote:
> On mercredi 5 février 2020 18:43:10 CET Andreas Cord-Landwehr wrote:
> > Hi David,
> > 
> > during the SPDX license marker introduction into KArchive we found the
> > following two files in KArchive with ambiguous license statements, which
> > mix LGPL and GPL terms:
> > 
> > https://cgit.kde.org/karchive.git/tree/src/krcc.cpp
> > https://cgit.kde.org/karchive.git/tree/src/krcc.h
> 
> I'm confused. Where does this include GPL terms?
> 
> It says "Library General Public License" twice.
The library is LGPL-2.0-only OR LGPL-3.0-only and 
mentions the section 14 of the GPL-3.0. That's the issue.

You can't invoke a clause from a different license :)
For LGPL-2.0 or 2.1, the clause from section 6 shall be used. [1]

As a comparison for a LGPL-2.1 or 3 + ev. file:

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) version 3, or any
later version accepted by the membership of KDE e.V. (or its
successor approved by the membership of KDE e.V.), which shall
act as a proxy defined in Section 6 of version 3 of the license.

[1] https://spdx.org/licenses/LGPL-3.0-only.html#licenseText