iOS native codes

After being annoyed with the ecosystem of WebAssembly, I'm looking for dealing with iOS native codes now. I've got ways of compiling static libraries, but as I have no experience of iOS development, I wonder how to add a binary code to a-Shell itself. For example, add a simple cli command, from getting the source to opening a pr. I know it may be pretty hard to understand the difference between different tool chains like `make` and `cmake` or configuring the cross-compile targets.