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I would like to link a GPL project to another project with the following clause in its license:

The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.

Is this software compatible with GPL v2 or v3?

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    But, is this not adding an extra restriction ? – Jacko May 25 '16 at 14:38
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    They don't need to. The purpose of the GPL is to provide freedoms of software use, not to use the author's name for marketing purposes. It's not an unreasonable request. – Robert Harvey May 25 '16 at 14:40
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    Yes, the original BSD license is not compatible, for obscure reasons that I haven't bothered to comprehend. It's entirely possible that the clause you cited is not compatible with the GPL. But that doesn't mean that it's not a license. It might mean that the clause is legally unenforceable. But again, I'm not a lawyer. – Robert Harvey May 25 '16 at 14:47
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    What does the rest of the license of the other project look like? – Christian May 25 '16 at 15:25
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    Link to or show the other license already. – whatsisname May 25 '16 at 16:31
7

The modified BSD license (also called BSD 3-Clause License) contains the exact same sentence:

(3)The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.

The Free Software Foundation lists the modified BSD license as GPL compatible.

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