R devel - Jul 2008 - License Conflict?

Is this a true problem?


Artistic License may conflict with GPL
The source code for R contains references to both the GNU General
Public License 2.0 (GPL) and to the Artistic License. These two
licenses include some contradictory restrictions.

The Ohloh source code parser is exhaustive, and can reveal licensing
requirements which the developers themselves may have overlooked or
forgotten.

This message is merely a warning. There may not actually be any
conflict, because the two licenses may not apply to the exact same
sections of code or the code in question may be available under
multiple licenses. You should review the license requirements for this
project carefully, especially if you are using this code for
commercial purposes.

The GNU Project maintains a guide to GPL compatibility at their web site.

Above is at this page:
http://www.ohloh.net/projects/3926/factoids/632981

>>>>> "GaGr" == Gabor Grothendieck <ggrothendieck at
gmail.com>
>>>>>     on Sun, 20 Jul 2008 19:51:50 -0400 writes:
    GaGr> Is this a true problem?

No;  
as Oholoh mentions there are only two files which mention the
artistic licence, namely src/main/apse.[ch]
and these two contain
>> Copyright (C) by Jarkko Hietaniemi, 1998,1999,2000,2001,2002,2003,2006.
>> All Rights Reserved.
>> 
>> This program is free software; you can redistribute it and/or modify
>> it under the terms of either:
>> 
>> a) the GNU Library General Public License as published by the Free
>>    Software Foundation; either version 2, or (at your option) any
>>    later version, or
>> 
>> b) the "Artistic License" which comes with Perl source code.
so they are exactly from the group mentioned below as

  "the code in question may be available under multiple licenses"

Thank you, Gabor, for asking.

Martin Maechler
ETH Zurich and R Core Team


    GaGr> Artistic License may conflict
    GaGr> with GPL The source code for R contains references to
    GaGr> both the GNU General Public License 2.0 (GPL) and to
    GaGr> the Artistic License. These two licenses include some
    GaGr> contradictory restrictions.

    GaGr> The Ohloh source code parser is exhaustive, and can
    GaGr> reveal licensing requirements which the developers
    GaGr> themselves may have overlooked or forgotten.

    GaGr> This message is merely a warning. There may not
    GaGr> actually be any conflict, because the two licenses may
    GaGr> not apply to the exact same sections of code or the
    GaGr> code in question may be available under multiple
    GaGr> licenses. You should review the license requirements
    GaGr> for this project carefully, especially if you are
    GaGr> using this code for commercial purposes.

    GaGr> The GNU Project maintains a guide to GPL compatibility
    GaGr> at their web site.

    GaGr> Above is at this page:
    GaGr> http://www.ohloh.net/projects/3926/factoids/632981

    GaGr> ______________________________________________
    GaGr> R-devel at r-project.org mailing list
    GaGr> https://stat.ethz.ch/mailman/listinfo/r-devel