Recommended way to add a tiny third party library? (for a Mobile Game)

[anonymous_user_d096574f]

By tiny, I mean a library with 15-20 classes. I want to import it and use it in my game. What is the best way to achieve it?

1. Import the C++ code from third party library, file by file into Unreal project.
2. Create a static library and add it to Unreal project.
3. Create a dynamic library and add it to Unreal project.
4. Something else.