[CP2K:4471] CP2K - new version release - 2.4

hut... at pci.uzh.ch hut... at pci.uzh.ch
Tue Jun 25 13:32:12 CEST 2013


I was in contact with Stefan Goedecker and we agreed on changing
the license header for the FFT routines to:

!  Copyright (C) Stefan Goedecker, Lausanne, Switzerland, August 1, 1991
!  Copyright (C) Stefan Goedecker, Cornell University, Ithaca, USA, 1994
!  Copyright (C) Stefan Goedecker, MPI Stuttgart, Germany, 1999
!  This file is distributed under the terms of the
!  GNU General Public License, see http://www.gnu.org/copyleft/gpl.txt .
!  S. Goedecker: Rotating a three-dimensional array in optimal
!  positions for vector processing: Case study for a three-dimensional Fast
!  Fourier Transform, Comp. Phys. Commun. 76, 294 (1993)
! *****************************************************************************



Juerg Hutter                         Phone : ++41 44 635 4491
Physical Chemistry Institute   FAX   : ++41 44 635 6838
University of Zurich               E-mail:  hut... at pci.uzh.ch
Winterthurerstrasse 190
CH-8057 Zurich, Switzerland

-----cp... at googlegroups.com wrote: -----
To: cp... at googlegroups.com
From: Michael Banck 
Sent by: cp... at googlegroups.com
Date: 06/25/2013 10:50AM
Subject: Re: [CP2K:4471] CP2K - new version release - 2.4


On Wed, Jun 19, 2013 at 10:22:57PM +0200, Dominik 'Rathann' Mierzejewski wrote:
> One more thing: could you add a licence header to all source files?
> Some of the files have statements suggesting they're not licenced under
> the GPLv2+.
> These files:
> src/fft_lib/ctrig.F
> src/fft_lib/fftpre.F
> src/fft_lib/ffttrot.F
> src/fft_lib/fftstp.F
> have this statement:
> ! Commercial use is prohibited
> ! without the explicit permission of the author.
> Actually, the contain only a copyright statement and no explicit
> permission to distribute (modified) versions of the file. I'd say
> this makes cp2k non-free, so please change those statements to state
> they're covered by GPLv2+ and preferably add a licence header to each
> source file to avoid any doubts.

Looking at http://comphys.unibas.ch/SOFTWARE/FFT/fft3d.f90 and the
BigDFT code at [1], it seems S. Goedecker has GPL-licensed (v2 or later)
that code later on.

So I guess it would be, for all practical purposes, fine to just add the
regular copyright boilerplate and the CP2K copyright, removing the
"Commercial use is prohibited without the explicit permission of the
author." part, but keeping his copyright line.

Best Regards,


[1] http://bazaar.launchpad.net/~bigdft-developers/bigdft/master/view/head:/src/lib/fft/fft3d.f90

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