Suggestions for guides or books on C compilers for mac OS

Questions
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1

What tutorials, guides or books might I study to understand what C language compilers are available for mac os and how those might be installed for use in Notebooks?

I have used some of the basic Compile[.] and FunctionCompile[.] features but the last time I wrote C was in the daze of BSD and UniSoft. I retired before GitHub was a thing, so anything I knew is obsolete.
I looked at Apple Developer but everything there presumed you wanted to write ios apps. Does the C or C++ compile in Xcode allow access from WL?

Any help or guidance is welcome…

2

You will need Xcode tools to be downloaded and installed from the Mac App Store. It has the “clang” C and C++ compiler. Then you can access all of the interfacing capability of Wolfram Language and compiled code.

3

A belated thank you, Mr. Brown.
Your response clarified things for me… I recall bash as a shell, did clang arise from similar sentiment?