How to deprecate a macro in GCC?

Question

i Know how to use attribute deprecated to deprecate a function like this:

int old_fn () __attribute__ ((deprecated));

But

Answer 1

Nice, elegant solution, however depending on C99 being enabled (works with gcc 4.8.2 or later, not tested on earlier versions):

#define DEPRECATED_MACRO1 _Pragma ("GCC warning \"'DEPRECATED_MACRO1' macro is deprecated\"") 7
#define DEPRECATED_MACRO2(...) _Pragma ("GCC warning \"'DEPRECATED_MACRO2' macro is deprecated\"") printf(__VA_ARGS__)

int main(int argc, char*argv[])
{
    int n = DEPRECATED_MACRO1;
    DEPRECATED_MACRO2("%d\n", n);
    return 0;
}