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I have a project that i have licensed under the GPL, and I would like to start working on parallelizing parts of it using OpenMP. To do this on windows using GCC, I apparently have to include the winpthreads license in my project, per the discussion here, for example.

The license itself has an advertising clause similar to the 4-clause BSD license:

...
 *  * Neither the name of Lockless Inc. nor the names of its contributors may be
 *    used to endorse or promote products derived from this software without
 *    specific prior written permission.
...

I believe this is not compatible with the GPL. Is there any way to include this in my GPL project while still using the GPL, or am I out of luck if I want to use GCC/OpenMP?

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The problematic clause in 4-clause BSD when it comes to GPL compatibility is the following:

  1. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by the organization .

Not the one you provided. So as long as the license is similar to the 3-clause BSD license in all other aspects as well it is compatible with the GPL.

See https://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses for more about GPL compatible and incompatible licenses.

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  • Oh, I misunderstood. Seem that there is no problem after all. Excellent! I'll accept your answer when it lets me in 5 minutes.
    – KBriggs
    Feb 9, 2017 at 20:48

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