Let's say we want to create a socket using the "socket"-function. How does the compiler know that it has to invoke a system call for that corresponding function? Is there any internal table that records with functions belong to a specific set of library?
1 Answers
The usual method is this:
Your platform's library includes a function called socket that contains the actual code needed to make a system call on your platform. The compiler reads in a header file that tells it that this function exists, the linker connects the compiled code to that function, and the library's implementation of that function makes the actual system call.
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