3 files changed, 10 insertions, 12 deletions
diff --git a/posix/sched.h b/posix/sched.h
index 253c963053..5b431c64bf 100644
--- a/posix/sched.h
+++ b/posix/sched.h
@@ -25,13 +25,14 @@
 #include <bits/types.h>
 
 #define __need_size_t
+#define __need_NULL
 #include <stddef.h>
 
-#ifdef __USE_XOPEN2K
-# define __need_time_t
-# define __need_timespec
+#include <bits/types/time_t.h>
+#include <bits/types/struct_timespec.h>
+#ifndef __USE_XOPEN2K
+# include <time.h>
 #endif
-#include <time.h>
 
 #ifndef __pid_t_defined
 typedef __pid_t pid_t;
diff --git a/posix/sys/times.h b/posix/sys/times.h
index a877d1490d..c7308d2617 100644
--- a/posix/sys/times.h
+++ b/posix/sys/times.h
@@ -24,9 +24,7 @@
 
 #include <features.h>
 
-#define	__need_clock_t
-#include <time.h>
-
+#include <bits/types/clock_t.h>
 
 __BEGIN_DECLS
 
diff --git a/posix/sys/types.h b/posix/sys/types.h
index 83dadcdd05..386f3e5703 100644
--- a/posix/sys/types.h
+++ b/posix/sys/types.h
@@ -124,12 +124,11 @@ typedef __key_t key_t;
 #endif
 
 #if defined __USE_XOPEN || defined __USE_XOPEN2K8
-# define __need_clock_t
+# include <bits/types/clock_t.h>
 #endif
-#define	__need_time_t
-#define __need_timer_t
-#define __need_clockid_t
-#include <time.h>
+#include <bits/types/clockid_t.h>
+#include <bits/types/time_t.h>
+#include <bits/types/timer_t.h>
 
 #ifdef __USE_XOPEN
 # ifndef __useconds_t_defined