LGPL 2.1 + GPL 3 = problems?

Arnoud Engelfriet arnoud at engelfriet.net
Sun Jul 15 11:04:25 UTC 2007

Philippe Verdy wrote:
> Arnoud Engelfriet wrote:
> > Yes, because the LGPLv3 allows conversion of the license to GPLv3.
> > With that conversion you can comply with GPLv3 for the entire work.
> Wrong ! The LGPGL does NOT authorize the conversion of the licences covering
> other necessary components. The terms that allows such promotion are those
> found in the licences of those components.

What I meant is that you can apply the terms of the GPL to any
LGPL work instead of the LGPL terms. See LGPL 2 section 3, first sentence.

I did make a mistake in assuming that this provision was also present
in LGPL 3. It is not. LGPL 3 simply says that you can convey the software
"under the GNU GPL, with none of the additional permissions of this License
applicable to that copy." (LGPLv3 section 2b).


Arnoud Engelfriet, Dutch & European patent attorney - Speaking only for myself
Patents, copyright and IPR explained for techies: http://www.iusmentis.com/
              Arnoud blogt nu ook: http://blog.iusmentis.com/

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