You definitely can't manage a C program with dependencies the way you would a Rust program with Cargo. You'd ordinarily bring in a couple major deps --- OpenSSL, zlib, pcre, &c --- and then maybe vendor in the small stuff. Most large C projects don't dep in things like logging or error handling the way Rust programs all do.

This particular program needs no third party dependencies at all; in fact, I bet it'd get longer if I added them (like a glib hash table, or pcre).