gistfile1.c

#define SET_CONST(target, e) \
    (target)->Set( \
        v8::String::NewSymbol(#e), \
        v8::Integer::New(e), \
        (v8::PropertyAttribute) (v8::ReadOnly | v8::DontDelete) \
    )

...

#ifdef EREMOTE
    SET_CONST(target, EREMOTE);
#endif
#ifdef EBADRPC
    SET_CONST(target, EBADRPC);
#endif
#ifdef ERPCMISMATCH
    SET_CONST(target, ERPCMISMATCH);
#endif
#ifdef EPROGUNAVAIL
    SET_CONST(target, EPROGUNAVAIL);
#endif