> By explicitly doing it so, in an operation that is easy to grep for, or in the case of a binary library, search for the symbol during the linking phase. Most

> By explicitly doing it so, in an operation that is easy to grep for, or in the case of a binary library, search for the symbol during the linking phase. Most of the time, these operations will be inlined, so they will already be gone by the time it gets to the linker. The compiler phase is the latest point where they are still visible.