I try to write C code that is valid C++ and has the same meaning in C++. const int a = 1; does not have the same meaning in C and C++. So I would write: extern const int a = 1; which does have the same meaning in both, but for some reason gcc doesn't quite like this and gives a warning. I end up doing: /* const is extern const in C, but static const in C++, * but gcc gives a warning for the correct portable form "extern const" */ #if defined(__cplusplus) || !defined(__GNUC__) #define EXTERN_CONST extern const #else #define EXTERN_CONST const #endif EXTERN_CONST int a = 1; which is just lame. - Jay
