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Re: BSD & MIT licenses compatible?



On Sat, 14 Apr 2007 21:49:50 +0100 Anthony W. Youngman wrote:

> In message <46205DF5.7020307@ucsc.edu>, Suraj N. Kurapati 
> <skurapat@ucsc.edu> writes
[...]
> >So when I appended bsd.c to mit.c, did the entire mit.c become
> >licensed under both licenses?  That is, did the originally-MIT
> >portions of mit.c inherit the extra condition from the BSD license?
> >
> By the way, if it is the *true* BSD licence (ie the code is copyright 
> Berkeley University :-) then the BSD and the MIT stuff are equivalent.
> 
> Berkeley has, to the best of my knowledge, deleted clause 3 from all
> the  software to which they own the copyright. (Precisely because it
> was  incompatible with the GPL, I believe...)

Wait, wait.
I think you are messing things up a little bit...

What Suraj is referring to when he says "BSD" is the 3-clause BSD
license[1] (he gave the OSI URL[2] in his original message).  Hence he's
already referring to a BSD license without the OAC (Obnoxious
Advertising Clause).

The 3-clause BSD license is *not* exactly equivalent to the so-called
MIT license (by which, I think, Suraj is referring to the Expat
license[3]).
For instance, the third clause of the 3-clause BSD license (even though
some consider it as a legal no-op...) has no corresponding restriction
in the Expat license.


[1] http://www.gnu.org/licenses/info/BSD_3Clause.html
[2] http://opensource.org/osi3.0/licenses/bsd-license.php
[3] http://www.jclark.com/xml/copying.txt

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