Re: [UFRaw-Devel] lensfun in UFRaw

[Robert K. <rl...@al...>]

   Date: Fri, 30 May 2008 02:35:15 +0400
   From: Andrew Zabolotny <za...@ho...>

   I just subscribed to this list, since I did not know of its existence :)
   I'll try to answer to most questions which were asked here regarding
   my lensfun patch.

   Hubert Figuiere:
   >So you relicensed UFRaw under GPLv3?
   I already told this to Udi, but I'll repeat.
   a) I never heard that GPLv2 apps cannot be linked against LGPLv3 libs.
   b) If this turns to be true, I'll add a special clause to lensfun
   license explicitly allowing to link lensfun with GPLv2 applications.
   It's not just a UFRaw question, other apps willing to integrate lensfun
   may hit this problem too (if it exists).

I asked the FSF precisely this, and they confirmed that this
combination isn't compatible (surprised me, too).  Apparently
something in LGPL3 adds something that would be considered an extra
restriction to GPL2.  However, I'm still waiting for an answer about
exactly what it is that's incompatible.

There's no problem for GPL2+ apps using LGPL3 libraries -- it's only
GPL2 (only) apps that have this problem.

You may want to ask the FSF (lic...@fs...) whether your proposed
solution would work.

-- 
Robert Krawitz                                     <rl...@al...>

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lp...@uu...
Project lead for Gutenprint   --    http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton