On Sun, 22 Sep 2002, Joerg Schilling wrote:

>>> You can't GPL part of your program however, and have GPL 
>>> incompatible code linked into it.
>
>This statement is not correct
>
>>I tend to believe this but can you please let me know where this is
>>stated in the GPLv2 license text (I mean the part about making
>>restrictions to the license). I'm assuming here that you are
>>quiet familiar with this topic so that it is easy for you to find it.
>>I already scanned the license text but could not find something 
>>matching.
>
>If you are the author you may put the under whatever license you like.

You can put code that you have written under whatever license(s) 
you like.  However, when you accept code contributions from other 
people into your source code, they are the copyright owner of 
that code.  In order to _change_ the license of the software, you 
must get all of the people who have ever contributed code to the 
software to agree to the license change, or to assign the 
copyright of the code they've contributed to you.  Only once all 
parties have agreed to the license change and/or reassigned their 
copyright to you, can you change the license of the code, or 
release it under a multiple license which they've agreed to.

I can't speak for every software author or contributor out there,
but I know if anyone ever changed the license on a GPL'd piece of
software and that I had contributed to under the terms of the GPL
license, and I had not explicitly handed them my copyright and
did not agree to the license change, I would be calling a lawyer
instantly.

If in doubt however, one should contact a copyright/patent
lawyer.


-- 
Mike A. Harris



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