[gmx-developers] DCD / Licence

Erik Lindahl lindahl at cbr.su.se
Fri Jul 3 15:00:36 CEST 2009


I think the kosher thing to do (at least that's what I've done when  
combining in things from more permissive licenses) is:

1) Since gromacs as a *package* is licensed under GPL/LGPL, add the  
normal Gromacs copyright header at the top of the file. This is just  
so we can make clear there is a single license for the entire package!

2) Obviously, keep the original license and document what part of the  
code it concerns (i.e, what routines we included). The best thing is  
probably to keep it a separate file, but just in case we were ever to  
mix in code from two other distributions.

3) In the sake of fairness, I usually write a comment that since we  
got this code under an even more permissive license, anybody else in  
turn is allowed to use our modifications too under that license  
instead of GPL if they prefer to. Not necessary, but it's the decent  
thing to do, IMHO.



On Jul 3, 2009, at 2:38 PM, Roland Schulz wrote:

> On Fri, Jul 3, 2009 at 7:51 AM, David van der Spoel <spoel at xray.bmc.uu.se 
> > wrote:
> Manuel Prinz wrote:
> Hi Roland!
> Is it OK to add code which is under the University of Illinois Open  
> Source
> License? It is GPL compatible so does not cause license conflicts?
> Yes, it is. The FSF lists it in http://www.fsf.org/licensing/ 
> licenses/ as
> GPL compatible.
> It sounds like a good thing to have.
> However, what happens to this code if the rest of gromacs would  
> become LGPL?
> LGPL is as far as I know the same as GPL besides the linking  
> permission. So that does not affect the license for that one source  
> file. That one source file would just stay licensed under   
> University of Illinois Open Source.
> Roland
> -- 
> ORNL/UT Center for Molecular Biophysics cmb.ornl.gov
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Erik Lindahl   <lindahl at cbr.su.se>  Backup: <erik.lindahl at gmail.com>
Associate Professor, Computational Structural Biology
Center for Biomembrane Research, Dept. Biochemistry & Biophysics
Stockholm University, SE-106 91 Stockholm, Sweden
Tel: +46(0)8164675  Mobile: +46(0)703844534  Fax: mail a PDF instead

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