<br><font size=2 face="sans-serif">I believe the CPL is compatible with
the Debian Free Software Guidelines. See http://www.debian.org/social_contract#guidelines.
</font>
<br><font size=2 face="sans-serif">The numbering below is from DFSG</font>
<br>
<br><font size=2 face="sans-serif"> 1. CPL grants license
to reproduce, distribute, sublicense, and sell. No royalties are
required.</font>
<br>
<br><font size=2 face="sans-serif"> 2. CPL permits redistribution
of source code and object code, provided the CPL license is included in
source code and copyright notices are not altered.</font>
<br>
<br><font size=2 face="sans-serif"> 3. CPL permits modification
and redistribution under CPL license. It even allows redistribution under
other licenses, provided those licenses have appropriate disclaimers and
states that recipients have access to source code.</font>
<br>
<br><font size=2 face="sans-serif"> 4. Integrity of derivative
works is not required by CPL.</font>
<br>
<br><font size=2 face="sans-serif"> 5-6. CPL grant is without
restrictions.</font>
<br>
<br><font size=2 face="sans-serif"> 7. The rights are granted
no matter how the software is obtained.</font>
<br>
<br><font size=2 face="sans-serif"> 8. License is not
specific to Debian.</font>
<br>
<br><font size=2 face="sans-serif"> 9. CPL does not
contaminate other software (a question: GPL'd software does not comply
with this requirement...I suppose DFSG is a work in progress).</font>
<br>
<br><font size=2 face="sans-serif">I also see no problem releasing COIN
under GPL provided the provisions 3.b(i-iv) in CPL are stated in the License
somewhere. But as I say, I don't think GPL meets the DFSG requirement
#9.</font>
<br><font size=2 face="sans-serif"> <br>
Alan </font>
<br>
<br>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>Soeren Sonnenburg <Soeren.Sonnenburg@first.fraunhofer.de></b>
</font>
<br><font size=1 face="sans-serif">Sent by: coin-discuss-bounces@list.coin-or.org</font>
<p><font size=1 face="sans-serif">04/06/2008 05:56 PM</font>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">coin-discuss@list.coin-or.org</font>
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<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Coin-discuss] COIN-OR licences again...</font></table>
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<br>
<br><tt><font size=2>Dear all,<br>
<br>
I apologize for bringing up this discussion again, but is there any<br>
chance that the COIN OR projects under is dual licensed under CPL *and*<br>
the GPL? (The CPL is GPL incompatible and thus COIN-OR with 90% of the<br>
open source programs, not even *linking* to a CPL based library is OK).<br>
<br>
I am asking as I would love to see the COIN libraries to be more<br>
widespread, i.e. <br>
<br>
a) I am interested in packaging some of the coin-or programs for<br>
debian. For example I already packaged dsdp (as it is GPL). It is not<br>
clear whether the CPL license is debian free software guidelinces<br>
conform so I would very much like to see coin-or projects GPL dual<br>
licensed... Note that debian based distributions have the biggest market<br>
share among the linux distributions - so coin-or could be pre-installed<br>
and may actually be used by a larger audience.<br>
<br>
b) I personally am looking for a free linear optimizer (like Clp) or<br>
even the Open Solver Interface (OSI) to be used in my shogun toolbox<br>
(www.shogun-toolbox.org) to at some point get rid of a cplex dependency.<br>
I know I could use glpk or lpsolve but as COIN is widely known in the OR<br>
community I would prefer seeing its projects to be dual licensed. And<br>
OSI is a great idea, but what does it help if you are not allowed to use<br>
it in an open source project due to licensing conflicts?<br>
<br>
Please note that it is in any case not a good idea to use a GPL<br>
incompatible license (see e.g.<br>
http://www.dwheeler.com/essays/gpl-compatible.html)<br>
After all most of the projects are GPL and a further incompatibility<br>
between open source licenses does not really help...<br>
Maybe this was one of the reasons why firefox etc are now dual licensed<br>
under GPL/LGPL/MPL... I understand that IBM started this project and<br>
some people simply did not like the GPL and *intentionally* choose the<br>
CPL. The community just suffers from conflicting licenses so I hope
we<br>
can overcome this...<br>
<br>
Soeren<br>
-- <br>
Soeren Sonnenburg - Fraunhofer FIRST Tel: +49 (30)
6392 1882<br>
Kekulestr. 7, 12489 Berlin, Germany Fax: +49 (30)
6392 1805<br>
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</font></tt>
<br>