// (under Unix, configure tests for this)
#ifndef HAVE_BOOL
#if defined( __MWERKS__ )
- #if (__MWERKS__ >= 0x1000) && !__option(bool)
+ #if (__MWERKS__ >= 0x1000) && __option(bool)
#define HAVE_BOOL
#endif
#elif defined(__VISUALC__) && (__VISUALC__ == 1020)