- #if !defined(__GNUC__) || !defined(__GNUC_MINOR__) || \
- (__GNUC__ < 3) || (__GNUC__ == 3 && __GNUC_MINOR__ < 4)
- #error "no pch support"
+ #if !defined(__GNUC__) || !defined(__GNUC_MINOR__)
+ #error "no pch support"
+ #endif
+ #if (__GNUC__ < 3)
+ #error "no pch support"
+ #endif
+ #if (__GNUC__ == 3) && \
+ ((!defined(__APPLE_CC__) && (__GNUC_MINOR__ < 4)) || \
+ ( defined(__APPLE_CC__) && (__GNUC_MINOR__ < 3)))
+ #error "no pch support"