diff --git a/libcxx/src/atomic.cpp b/libcxx/src/atomic.cpp --- a/libcxx/src/atomic.cpp +++ b/libcxx/src/atomic.cpp @@ -15,6 +15,8 @@ #include <functional> #include <thread> +#include "include/apple_availability.h" + #ifdef __linux__ #include <unistd.h>