Hi [mention removed],
The core issue is that effectively, the way a c++ raw library manages the build process is different on how unreal engine projects are buillt. I’ve asked Epic if it would be possible to integrate it directly to the Unreal Engine solution, as a new project as you would do it normally with a visual studio solution and they have told me that is not as simple as adding it. This would mean to integrate it inside the “Generate Project Files”/built operation, and linking it correctly to the game project. It looks that the solution looks like more of an automated operation that copies and prepares the project, instead of adding the existing project as you would normally do in visual studio.
Also unreal has its own documentation on integrating Third Party libraries inside the project but I think it does not fit exactly on what you are looking for. I’ll add the link the documentation if it can help in any way:
Integrating Third-Party Libraries: https://dev.epicgames.com/documentation/en\-us/unreal\-engine/integrating\-third\-party\-libraries\-into\-unreal\-engine
This was a first answer but I’ll let you know when I get more detailed response.
Best,
Joan