[License-discuss] License which requires watermarking? (Attribution Provision)

Björn Terelius bjorn.terelius at gmail.com
Thu Jan 3 12:19:48 UTC 2013

On Jan 3, 2013, at 9:28 AM, Ken Arromdee wrote:

> On Wed, 2 Jan 2013, Lawrence Rosen wrote:
>> Regardless of whether a library is licensed under the GPL or the  
>> LGPL, a
>> licensee will have to disclose *source code* of the library and  
>> *source
>> code* of derivative works of the library.
> If you agree with the FSF's position on what a derivative work is, a  
> work
> that links to a LGPL library is a derivative work but you are not  
> required
> to release source for it.

Just some input to make the discussion easier to follow. Neither GPLv3  
nor LGPLv3 uses the term "derivative work" but seem to consider linked  
versions to be "based on the earlier work". The relevant LGPL  
exceptions to the source code requirement are as follows:

This version of the GNU Lesser General Public License incorporates the  
terms and conditions of version 3 of the GNU General Public License,  
supplemented by the additional permissions listed below.

A “Combined Work” is a work produced by combining or linking an  
Application with the Library. The particular version of the Library  
with which the Combined Work was made is also called the “Linked  

You may convey a Combined Work under terms of your choice that, taken  
together, effectively do not restrict modification of the portions of  
the Library contained in the Combined Work and reverse engineering for  
debugging such modifications, if you also do each of the following:


Best regards
Björn Terelius

More information about the License-discuss mailing list