#define APT_PURE __attribute__((pure))
#define APT_NORETURN __attribute__((noreturn))
#define APT_PRINTF(n) __attribute__((format(printf, n, n + 1)))
+ #define APT_WEAK __attribute__((weak));
#else
#define APT_DEPRECATED
#define APT_DEPRECATED_MSG
#define APT_PURE
#define APT_NORETURN
#define APT_PRINTF(n)
+ #define APT_WEAK
#endif
#if APT_GCC_VERSION > 0x0302