20 #ifndef __JackCompilerDeps_APPLE__    21 #define __JackCompilerDeps_APPLE__    23 #include "JackConstants.h"    27     #define MEM_ALIGN(x,y) x __attribute__((aligned(y)))    28     #define LIB_EXPORT __attribute__((visibility("default")))    30         #define SERVER_EXPORT __attribute__((visibility("default")))    35     #define MEM_ALIGN(x,y) x