--- a/include/tccdefs.h
+++ b/include/tccdefs.h
@@ -135,8 +135,10 @@
     #define  BIONIC_IOCTL_NO_SIGNEDNESS_OVERLOAD
     #define  __PRETTY_FUNCTION__ __FUNCTION__
     #define __has_builtin(x) 0
+    #define __has_feature(x) 0
     #define _Nonnull
     #define _Nullable
+    #define _Null_unspecified
 
 #else
     /* Linux */