Are macOS libraries for Apple Silicon any different?

Question

A library can be static or dynamic. Respectively, on macOS it can be a .a or a .dylib file, as far as I know.

Let's say I'm going to use it for both, the old (non silicon) apple computers (i.e. those running Catalina) and the new computers with M cpu (i.e. those running Monterey).

Does the binary, the .a or .dylib, is different for each case?

Should the vendor provide a specific binary for apple-silicon?

How the .so libraries go in this context?

Answer 1

Yes, they are different, people usually use lipo to merge multiple architectures together (when it is not part of the build process).