Can I share a plugin containing GPL 3+ .lib OR .dll files?

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Hi,

I have developed a plugin for private use that makes use of a GPL 3+ static OR dynamically linked library called wiiuse.

I would like to post instructions on how to make such a plugin as a wiki tutorial, and to make the git repo for this plugin public. Does that violate my terms of use for Unreal Engine 4?

Also, does it matter whether I choose .lib or .dll files for the plugin?

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I’m not sure what GPL 3+ means, probably it’s GPLv3. GPL is treated as a Non-Compatible License under the UE4 EULA (see Non-Compatible Licenses sub-section under Section 1). As a result, it’s not permitted to combine or distribute the engine, or parts of it, with GPL covered software.