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[Help-gsl] GPL violation?

From: Johannes Buchner
Subject: [Help-gsl] GPL violation?
Date: Wed, 9 Dec 2009 23:27:16 +1300


I found a software package that uses the GSL, but is not licensed under
a OSS license.
Please correct me if I'm wrong, but users of the GSL have to license
any code that uses the GSL -- links against it -- as GPL, right?
It is also my understanding that the GSL does not necessarily have to be
distributed itself.
Most of that packages code is Fortran, but one standalone C file/tool
uses GSL functions. There is no license statement. It is distributed as
source code, without containing a version of the GSL.

I contacted the author, but dispite citing the GSL website: 
> If I wanted to distribute an application which uses GSL, what license
> would I need to use? The GNU General Public License (GPL).
and, the author
doesn't believe the software has to be GPL, because he/she is not
distributing code written by someone else.

I'd be glad to get some help for arguing (or maybe I'm wrong).

On a somewhat related note, can users of the GSL choose to make their
code GPLv2 if it is still compatible with the 'old' GSL versions that
didn't have GPLv3?

Best regards,

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