+#if TARGET_OS_EMBEDDED
+int posix_spawnattr_setjetsam(posix_spawnattr_t * __restrict attr,
+ short flags, int priority, int memlimit) __OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_5_0);
+#endif /* TARGET_OS_EMBEDDED */
+
+int posix_spawnattr_setjetsam_ext(posix_spawnattr_t * __restrict attr,
+ short flags, int priority, int memlimit_active, int memlimit_inactive) __OSX_AVAILABLE_STARTING(__MAC_10_11, __IPHONE_9_0);
+
+int posix_spawnattr_set_threadlimit_ext(posix_spawnattr_t * __restrict attr,
+ int thread_limit);