GCC warnings for unused global variables

[Neil Booth]

Zack Weinberg wrote:-

> > That lets us neatly handle multiple object formats easily while still
> > using features like placing the strings in non-loaded sections when
> > using ELF.  ("Why waste the RAM?"  8-)  It also means that we can apply
> > (have applied!) __attribute__((__unused__)) nearly everywhere fairly
> > easily.
> 
> Hmm.  I could give you #pragma GCC ident (semantically identical to
> #ident) which would let you do
> 
> #define __RCSID(str) _Pragma("GCC ident " #str)

Um, no, string concat doesn't and won't happen in #pragma.

_Pragma takes a single literal.

Neil.