It's not only the build environment. Mastering C goes way beyond the superficial level of just learning the language and the libraries. Being a very thin abstra

It's not only the build environment. Mastering C goes way beyond the superficial level of just learning the language and the libraries. Being a very thin abstraction over the machine, you will inevitably encounter some quirks which can only be explained from the perspective of a compiler writer or a hardware designer. Also, POSIX is not just another library, it's the interface between your program and the operating system. Knowing what to call and how to call it ultimately requires a good foundation in OS theory.