--- Libc/Libc-763.13/include/limits.h
+++ Libc/Libc-1583.60.2/include/limits.h
@@ -62,6 +62,7 @@
 
 #include <sys/cdefs.h>
 #include <machine/limits.h>
+#ifndef UNIFDEF_DRIVERKIT
 #include <sys/syslimits.h>
 
 #if __DARWIN_C_LEVEL > __DARWIN_C_ANSI
@@ -100,12 +101,22 @@
 #define _POSIX_SEM_VALUE_MAX 			32767
 #define _POSIX_SIGQUEUE_MAX 			32
 #define _POSIX_TIMER_MAX 			32
+
+#define _POSIX_CLOCKRES_MIN 20000000
 #endif /* __DARWIN_C_LEVEL >= 199309L */
 
 #if __DARWIN_C_LEVEL >= 199506L
 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 	4
 #define _POSIX_THREAD_KEYS_MAX 			128
 #define _POSIX_THREAD_THREADS_MAX 		64
+
+#define PTHREAD_DESTRUCTOR_ITERATIONS 	4
+#define PTHREAD_KEYS_MAX 		512
+#if defined(__arm__) || defined(__arm64__)
+#define PTHREAD_STACK_MIN 		16384
+#else
+#define PTHREAD_STACK_MIN 		8192
+#endif
 #endif /* __DARWIN_C_LEVEL >= 199506L */
 
 #if __DARWIN_C_LEVEL >= 200112
@@ -124,12 +135,6 @@
 
 #define _POSIX_RE_DUP_MAX 		_POSIX2_RE_DUP_MAX
 #endif /* __DARWIN_C_LEVEL >= 200112 */
-
-#if __DARWIN_C_LEVEL >= 200809L
-#define PTHREAD_DESTRUCTOR_ITERATIONS 	4
-#define PTHREAD_KEYS_MAX 		512
-#define PTHREAD_STACK_MIN 		8192
-#endif /* __DARWIN_C_LEVEL >= 200809L */
 
 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
 #define OFF_MIN		LLONG_MIN	/* min value for an off_t */
@@ -159,5 +164,6 @@
 #endif /* __DARWIN_C_LEVEL > __DARWIN_C_ANSI */
 
 /* NZERO to be defined here. TBD. See also sys/param.h  */
+#endif /* UNIFDEF_DRIVERKIT */
 
 #endif /* !_LIMITS_H_ */