Add macOS support

Author: conradev

config.h

@@ -1,7 +1,13 @@
+#if defined(__APPLE__)
+#include <TargetConditionals.h>
+#endif
+
 #if defined(WIN32) || defined(_WIN32)
 #include "config_windows_x86_64.h"
 #elif defined(__gnu_linux__)
 #include "config_linux_x86_64.h"
+#elif defined(TARGET_OS_MAC) && TARGET_OS_MAC
+#include "config_macosx_x86_64.h"
 #elif defined(__ANDROID__)
 #if defined(__aarch64__)
 #include "config_android_aarch64.h"