At the company I work for we call these "macro maps" and we always pass the X macro as a parameter. Macro maps are common knowledge here because they are used fairly extensively; in the filesystem alone I found 16 instances of the technique.
The token pasting that's often used in conjunction with macro maps often makes it difficult to find the definition of the constructed token, but as far as keeping different tables and declarations in sync with one another, I've yet to find a good alternative in C.
