1 #ifndef FEATURES_H 2 #define FEATURES_H 3 4 #include "../../include/features.h" 5 6 #define weak __attribute__((__weak__)) 7 #define hidden __attribute__((__visibility__("hidden"))) 8 #define weak_alias(old, new) \ 9 extern __typeof(old) new __attribute__((__weak__, __alias__(#old))) 10 11 #endif 12