I still wonder if there's an easy way to just incorporate all of these libs inside the external binary.

Do you mean static linking?

Depends on the dependencies. Some are available as a static library and others are not.

Personally, I strongly prefer static linking for plugins (like Pd externals).

The downside is that you're responsible for providing the correct linker flags, since a static library is just an archive of object files. For complex dependencies, you're better off with linking dynamically and shipping them along side your library.