#if APT_GCC_VERSION >= 0x0400
#define APT_SENTINEL __attribute__((sentinel))
+ #define APT_PUBLIC __attribute__ ((visibility ("default")))
+ #define APT_HIDDEN __attribute__ ((visibility ("hidden")))
#else
#define APT_SENTINEL
+ #define APT_PUBLIC
+ #define APT_HIDDEN
#endif
// cold functions are unlikely() to be called