Linking a GPL-v3 library in my game

Development Programming & Scripting
1

Hey there!

I’m currently working on a plugin for my game called RobotVoice, which should give robots in my world a voice using a Text-To-Speech system.

The library I’d like to use for that is espeak-ng, which is shipped under the GNU GPL-v3 license.

I know that this license falls under the nom-compatible license models stated in the UE4 EULA, but I’d like to know the details. Am I allowed to link this library, either statically or dynamically? If dynamically, shipping the .dll with the game is okay? What if I give attribution and credit to the original authors?

Thanks!

2

Unfortunately, we aren’t able to provide you with specific advice on how to comply with the GPL. We can say, however, that linking a GPL library with an Unreal Engine project in such a way that would require all or any part of Engine Code to be distributed under the terms of the GPL is prohibited.

3

Hey, thanks. Is there a mail or something where I can discuss this specific case to find a solution? Thanks!

4

For advice on how to comply with the GPL, we recommend you consult an attorney.