diff --git a/include/time.h b/include/time.h
index 23d2580..832ee68 100644
--- a/include/time.h
+++ b/include/time.h
@@ -16,12 +16,10 @@ libc_hidden_proto (localtime)
 libc_hidden_proto (strftime)
 libc_hidden_proto (strptime)
 
-extern __typeof (clock_getres) __clock_getres;
 extern __typeof (clock_gettime) __clock_gettime;
 libc_hidden_proto (__clock_gettime)
 extern __typeof (clock_settime) __clock_settime;
-extern __typeof (clock_nanosleep) __clock_nanosleep;
-extern __typeof (clock_getcpuclockid) __clock_getcpuclockid;
+libc_hidden_proto (__clock_settime)
 
 /* Now define the internal interfaces.  */
 struct tm;
diff --git a/rt/Makefile b/rt/Makefile
index 14f38ef..de53133 100644
--- a/rt/Makefile
+++ b/rt/Makefile
@@ -28,9 +28,6 @@ aio-routines   := aio_cancel aio_error aio_fsync aio_misc aio_read	\
 		  aio_read64 aio_return aio_suspend aio_write		\
 		  aio_write64 lio_listio lio_listio64 aio_sigqueue	\
 		  aio_notify
-clock-routines := clock_getcpuclockid					\
-		  clock_getres clock_gettime clock_settime		\
-		  clock_nanosleep
 timer-routines := timer_create timer_delete timer_getoverr		\
 		  timer_gettime timer_settime
 shm-routines   := shm_open shm_unlink
@@ -38,22 +35,18 @@ mq-routines    := mq_open mq_close mq_unlink mq_getattr mq_setattr	\
 		  mq_notify mq_send mq_receive mq_timedsend		\
 		  mq_timedreceive
 
-routines = $(clock-routines)
-
 librt-routines = $(aio-routines) \
 		 $(timer-routines) \
-		 $(shm-routines) $(mq-routines) \
-		 clock-compat
+		 $(shm-routines) $(mq-routines)
 
-tests := tst-shm tst-clock tst-clock_nanosleep tst-timer tst-timer2 \
+tests := tst-shm tst-timer tst-timer2 \
 	 tst-aio tst-aio64 tst-aio2 tst-aio3 tst-aio4 tst-aio5 tst-aio6 \
 	 tst-aio7 tst-aio8 tst-aio9 tst-aio10 \
 	 tst-mqueue1 tst-mqueue2 tst-mqueue3 tst-mqueue4 \
 	 tst-mqueue5 tst-mqueue6 tst-mqueue7 tst-mqueue8 tst-mqueue9 \
 	 tst-timer3 tst-timer4 tst-timer5 \
-	 tst-cpuclock1 tst-cpuclock2 \
-	 tst-cputimer1 tst-cputimer2 tst-cputimer3 \
-	 tst-clock2 tst-shm-cancel
+	 tst-cpuclock2 tst-cputimer1 tst-cputimer2 tst-cputimer3 \
+	 tst-shm-cancel
 
 extra-libs := librt
 extra-libs-others := $(extra-libs)
diff --git a/rt/Versions b/rt/Versions
index 91e3fd2..84d1345 100644
--- a/rt/Versions
+++ b/rt/Versions
@@ -1,15 +1,3 @@
-libc {
-  GLIBC_2.17 {
-    # c*
-    clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
-    clock_nanosleep;
-  }
-  GLIBC_PRIVATE {
-    __clock_getres; __clock_gettime; __clock_settime; __clock_getcpuclockid;
-    __clock_nanosleep;
-  }
-}
-
 librt {
   GLIBC_2.1 {
     # AIO functions.
@@ -18,10 +6,6 @@ librt {
     aio_suspend64; aio_write; aio_write64; lio_listio; lio_listio64;
   }
   GLIBC_2.2 {
-    # These have moved to libc and are still here only for compatibility.
-    clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
-    clock_nanosleep;
-
     # s*
     shm_open; shm_unlink;
 
diff --git a/rt/clock-compat.c b/rt/clock-compat.c
deleted file mode 100644
index 11e71aa..0000000
--- a/rt/clock-compat.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/* ABI compatibility redirects for clock_* symbols in librt.
-   Copyright (C) 2012-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <shlib-compat.h>
-
-/* The clock_* symbols were originally defined in librt and so
-   are part of its ABI.  As of 2.17, they have moved to libc.
-   So we supply definitions for librt that just redirect to
-   their libc counterparts.  */
-
-#if SHLIB_COMPAT (librt, GLIBC_2_2, GLIBC_2_17)
-
-#include <time.h>
-
-#if HAVE_IFUNC
-# undef INIT_ARCH
-# define INIT_ARCH()
-# define COMPAT_REDIRECT(name, proto, arglist) libc_ifunc (name, &__##name) \
-    compat_symbol (librt, name, name, GLIBC_2_2);
-#else
-# define COMPAT_REDIRECT(name, proto, arglist)				      \
-  int									      \
-  name proto								      \
-  {									      \
-    return __##name arglist;						      \
-  }									      \
-  compat_symbol (librt, name, name, GLIBC_2_2);
-#endif
-
-COMPAT_REDIRECT (clock_getres,
-		 (clockid_t clock_id, struct timespec *res),
-		 (clock_id, res))
-COMPAT_REDIRECT (clock_gettime,
-		 (clockid_t clock_id, struct timespec *tp),
-		 (clock_id, tp))
-COMPAT_REDIRECT (clock_settime,
-		 (clockid_t clock_id, const struct timespec *tp),
-		 (clock_id, tp))
-COMPAT_REDIRECT (clock_getcpuclockid,
-		 (pid_t pid, clockid_t *clock_id),
-		 (pid, clock_id))
-COMPAT_REDIRECT (clock_nanosleep,
-		 (clockid_t clock_id, int flags,
-		  const struct timespec *req,
-		  struct timespec *rem),
-		 (clock_id, flags, req, rem))
-
-#endif
diff --git a/rt/clock_getcpuclockid.c b/rt/clock_getcpuclockid.c
deleted file mode 100644
index 6bc42a0..0000000
--- a/rt/clock_getcpuclockid.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Get a clockid_t for the process CPU clock of a given process.  Generic.
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <time.h>
-#include <unistd.h>
-
-int
-__clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
-{
-  /* We don't allow any process ID but our own.  */
-  if (pid != 0 && pid != getpid ())
-    return EPERM;
-
-#ifdef CLOCK_PROCESS_CPUTIME_ID
-  /* Store the number.  */
-  *clock_id = CLOCK_PROCESS_CPUTIME_ID;
-
-  return 0;
-#else
-  /* We don't have a timer for that.  */
-  return ENOENT;
-#endif
-}
-weak_alias (__clock_getcpuclockid, clock_getcpuclockid)
diff --git a/rt/clock_getres.c b/rt/clock_getres.c
deleted file mode 100644
index 816f7b2..0000000
--- a/rt/clock_getres.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Get the resolution of a clock.  Stub version.
-   Copyright (C) 1999-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <time.h>
-
-/* Get resolution of clock.  */
-int
-__clock_getres (clockid_t clock_id, struct timespec *res)
-{
-  __set_errno (ENOSYS);
-  return -1;
-}
-weak_alias (__clock_getres, clock_getres)
-stub_warning (clock_getres)
diff --git a/rt/clock_gettime.c b/rt/clock_gettime.c
deleted file mode 100644
index 30a0124..0000000
--- a/rt/clock_gettime.c
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Get the current value of a clock.  Stub version.
-   Copyright (C) 1999-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <time.h>
-
-/* Get current value of CLOCK and store it in TP.  */
-int
-__clock_gettime (clockid_t clock_id, struct timespec *tp)
-{
-  __set_errno (ENOSYS);
-  return -1;
-}
-weak_alias (__clock_gettime, clock_gettime)
-libc_hidden_def (__clock_gettime)
-stub_warning (clock_gettime)
diff --git a/rt/clock_nanosleep.c b/rt/clock_nanosleep.c
deleted file mode 100644
index 15aa6f7..0000000
--- a/rt/clock_nanosleep.c
+++ /dev/null
@@ -1,37 +0,0 @@
-/* High-resolution sleep with the specified clock.  Stub version.
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <time.h>
-
-int
-__clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
-		   struct timespec *rem)
-{
-  if (__builtin_expect (req->tv_nsec, 0) < 0
-      || __builtin_expect (req->tv_nsec, 0) >= 1000000000)
-    return EINVAL;
-
-  if (flags != TIMER_ABSTIME && flags != 0)
-    return EINVAL;
-
-  /* Not implemented.  */
-  return ENOSYS;
-}
-weak_alias (__clock_nanosleep, clock_nanosleep)
-stub_warning (clock_nanosleep)
diff --git a/rt/clock_settime.c b/rt/clock_settime.c
deleted file mode 100644
index 0b6d4b2..0000000
--- a/rt/clock_settime.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Set a clock to a given value.  Stub version.
-   Copyright (C) 1999-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <time.h>
-
-/* Set CLOCK to value TP.  */
-int
-__clock_settime (clockid_t clock_id, const struct timespec *tp)
-{
-  __set_errno (ENOSYS);
-  return -1;
-}
-weak_alias (__clock_settime, clock_settime)
-stub_warning (clock_settime)
diff --git a/rt/tst-clock.c b/rt/tst-clock.c
deleted file mode 100644
index bec76d0..0000000
--- a/rt/tst-clock.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/* Test program for POSIX clock_* functions.
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include <stdint.h>
-
-
-/* We want to see output immediately.  */
-#define STDOUT_UNBUFFERED
-
-/* We expect to run at least 10 seconds.  */
-#define TIMEOUT 15
-
-static int
-clock_test (clockid_t cl)
-{
-  struct timespec old_ts;
-  struct timespec ts;
-  struct timespec waitit;
-  int result = 0;
-  int i;
-
-  memset (&ts, '\0', sizeof ts);
-
-  waitit.tv_sec = 0;
-  waitit.tv_nsec = 500000000;
-
-  /* Get and print resolution of the clock.  */
-  if (clock_getres (cl, &ts) == 0)
-    {
-      if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000)
-	{
-	  printf ("clock %d: nanosecond value of resolution wrong\n", cl);
-	  result = 1;
-	}
-      else
-	printf ("clock %d: resolution = %jd.%09jd secs\n",
-		cl, (intmax_t) ts.tv_sec, (intmax_t) ts.tv_nsec);
-    }
-  else
-    {
-      printf ("clock %d: cannot get resolution\n", cl);
-      result = 1;
-    }
-
-  memset (&ts, '\0', sizeof ts);
-  memset (&old_ts, '\0', sizeof old_ts);
-
-  /* Next get the current time value a few times.  */
-  for (i = 0; i < 10; ++i)
-    {
-      if (clock_gettime (cl, &ts) == 0)
-	{
-	  if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000)
-	    {
-	      printf ("clock %d: nanosecond value of time wrong (try %d)\n",
-		      cl, i);
-	      result = 1;
-	    }
-	  else
-	    {
-	      printf ("clock %d: time = %jd.%09jd secs\n",
-		      cl, (intmax_t) ts.tv_sec, (intmax_t) ts.tv_nsec);
-
-	      if (memcmp (&ts, &old_ts, sizeof ts) == 0)
-		{
-		  printf ("clock %d: time hasn't changed (try %d)\n", cl, i);
-		  result = 1;
-
-		  old_ts = ts;
-		}
-	    }
-	}
-      else
-	{
-	  printf ("clock %d: cannot get time (try %d)\n", cl, i);
-	  result = 1;
-	}
-
-      /* Wait a bit before the next iteration.  */
-      nanosleep (&waitit, NULL);
-    }
-
-  return result;
-}
-
-static int
-do_test (void)
-{
-  clockid_t cl;
-  int result;
-
-  result = clock_test (CLOCK_REALTIME);
-
-  if (clock_getcpuclockid (0, &cl) == 0)
-    /* XXX It's not yet a bug when this fails.  */
-    clock_test (cl);
-  else
-	  printf("CPU clock unavailble, skipping test\n");
-
-  return result;
-}
-#define TEST_FUNCTION do_test ()
-
-
-#include "../test-skeleton.c"
diff --git a/rt/tst-clock2.c b/rt/tst-clock2.c
deleted file mode 100644
index 4c8fb9f..0000000
--- a/rt/tst-clock2.c
+++ /dev/null
@@ -1,43 +0,0 @@
-/* Test setting the monotonic clock.  */
-
-#include <time.h>
-#include <unistd.h>
-
-#if defined CLOCK_MONOTONIC && defined _POSIX_MONOTONIC_CLOCK
-
-# include <errno.h>
-# include <stdio.h>
-
-static int
-do_test (void)
-{
-  if (sysconf (_SC_MONOTONIC_CLOCK) <= 0)
-    return 0;
-
-  struct timespec ts;
-  if (clock_gettime (CLOCK_MONOTONIC, &ts) != 0)
-    {
-      puts ("clock_gettime(CLOCK_MONOTONIC) failed");
-      return 1;
-    }
-
-  /* Setting the monotonic clock must fail.  */
-  if (clock_settime (CLOCK_MONOTONIC, &ts) != -1)
-    {
-      puts ("clock_settime(CLOCK_MONOTONIC) did not fail");
-      return 1;
-    }
-  if (errno != EINVAL)
-    {
-      printf ("clock_settime(CLOCK_MONOTONIC) set errno to %d, expected %d\n",
-	      errno, EINVAL);
-      return 1;
-    }
-  return 0;
-}
-# define TEST_FUNCTION do_test ()
-
-#else
-# define TEST_FUNCTION	0
-#endif
-#include "../test-skeleton.c"
diff --git a/rt/tst-clock_nanosleep.c b/rt/tst-clock_nanosleep.c
deleted file mode 100644
index eb2b906..0000000
--- a/rt/tst-clock_nanosleep.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/time.h>
-#include <time.h>
-
-
-/* Test that clock_nanosleep() does sleep.  */
-static int
-do_test (void)
-{
-  /* Current time.  */
-  struct timeval tv1;
-  (void) gettimeofday (&tv1, NULL);
-
-  struct timespec ts;
-  ts.tv_sec = 1;
-  ts.tv_nsec = 0;
-  TEMP_FAILURE_RETRY (clock_nanosleep (CLOCK_REALTIME, 0, &ts, &ts));
-
-  /* At least one second must have passed.  */
-  struct timeval tv2;
-  (void) gettimeofday (&tv2, NULL);
-
-  tv2.tv_sec -= tv1.tv_sec;
-  tv2.tv_usec -= tv1.tv_usec;
-  if (tv2.tv_usec < 0)
-    --tv2.tv_sec;
-
-  if (tv2.tv_sec < 1)
-    {
-      puts ("clock_nanosleep didn't sleep long enough");
-      return 1;
-    }
-
-  return 0;
-}
-
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"
diff --git a/rt/tst-cpuclock1.c b/rt/tst-cpuclock1.c
deleted file mode 100644
index f6d76e3..0000000
--- a/rt/tst-cpuclock1.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/* Test program for process CPU clocks.
-   Copyright (C) 2004-2018 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <errno.h>
-#include <signal.h>
-#include <stdint.h>
-#include <sys/wait.h>
-
-/* This function is intended to rack up both user and system time.  */
-static void
-chew_cpu (void)
-{
-  while (1)
-    {
-      static volatile char buf[4096];
-      for (int i = 0; i < 100; ++i)
-	for (size_t j = 0; j < sizeof buf; ++j)
-	  buf[j] = 0xaa;
-      int nullfd = open ("/dev/null", O_WRONLY);
-      for (int i = 0; i < 100; ++i)
-	for (size_t j = 0; j < sizeof buf; ++j)
-	  buf[j] = 0xbb;
-      write (nullfd, (char *) buf, sizeof buf);
-      close (nullfd);
-      if (getppid () == 1)
-	_exit (2);
-    }
-}
-
-static int
-do_test (void)
-{
-  int result = 0;
-  clockid_t cl;
-  int e;
-  pid_t dead_child, child;
-
-  /* Fork a child and let it die, to give us a PID known not be valid
-     (assuming PIDs don't wrap around during the test).  */
-  {
-    dead_child = fork ();
-    if (dead_child == 0)
-      _exit (0);
-    if (dead_child < 0)
-      {
-	perror ("fork");
-	return 1;
-      }
-    int x;
-    if (wait (&x) != dead_child)
-      {
-	perror ("wait");
-	return 2;
-      }
-  }
-
-  /* POSIX says we should get ESRCH for this.  */
-  e = clock_getcpuclockid (dead_child, &cl);
-  if (e != ENOSYS && e != ESRCH && e != EPERM)
-    {
-      printf ("clock_getcpuclockid on dead PID %d => %s\n",
-	      dead_child, strerror (e));
-      result = 1;
-    }
-
-  /* Now give us a live child eating up CPU time.  */
-  child = fork ();
-  if (child == 0)
-    {
-      chew_cpu ();
-      _exit (1);
-    }
-  if (child < 0)
-    {
-      perror ("fork");
-      return 1;
-    }
-
-  e = clock_getcpuclockid (child, &cl);
-  if (e == EPERM)
-    {
-      puts ("clock_getcpuclockid does not support other processes");
-      goto done;
-    }
-  if (e != 0)
-    {
-      printf ("clock_getcpuclockid on live PID %d => %s\n",
-	      child, strerror (e));
-      result = 1;
-      goto done;
-    }
-
-  const clockid_t child_clock = cl;
-  struct timespec res;
-  if (clock_getres (child_clock, &res) < 0)
-    {
-      printf ("clock_getres on live PID %d clock %lx => %s\n",
-	      child, (unsigned long int) child_clock, strerror (errno));
-      result = 1;
-      goto done;
-    }
-  printf ("live PID %d clock %lx resolution %ju.%.9ju\n",
-	  child, (unsigned long int) child_clock,
-	  (uintmax_t) res.tv_sec, (uintmax_t) res.tv_nsec);
-
-  struct timespec before, after;
-  if (clock_gettime (child_clock, &before) < 0)
-    {
-      printf ("clock_gettime on live PID %d clock %lx => %s\n",
-	      child, (unsigned long int) child_clock, strerror (errno));
-      result = 1;
-      goto done;
-    }
-  /* Should be close to 0.0.  */
-  printf ("live PID %d before sleep => %ju.%.9ju\n",
-	  child, (uintmax_t) before.tv_sec, (uintmax_t) before.tv_nsec);
-
-  struct timespec sleeptime = { .tv_nsec = 500000000 };
-  if (nanosleep (&sleeptime, NULL) != 0)
-    {
-      perror ("nanosleep");
-      result = 1;
-      goto done;
-    }
-
-  if (clock_gettime (child_clock, &after) < 0)
-    {
-      printf ("clock_gettime on live PID %d clock %lx => %s\n",
-	      child, (unsigned long int) child_clock, strerror (errno));
-      result = 1;
-      goto done;
-    }
-  /* Should be close to 0.5.  */
-  printf ("live PID %d after sleep => %ju.%.9ju\n",
-	  child, (uintmax_t) after.tv_sec, (uintmax_t) after.tv_nsec);
-
-  struct timespec diff = { .tv_sec = after.tv_sec - before.tv_sec,
-			   .tv_nsec = after.tv_nsec - before.tv_nsec };
-  if (diff.tv_nsec < 0)
-    {
-      --diff.tv_sec;
-      diff.tv_nsec += 1000000000;
-    }
-  if (diff.tv_sec != 0
-      || diff.tv_nsec > 600000000
-      || diff.tv_nsec < 100000000)
-    {
-      printf ("before - after %ju.%.9ju outside reasonable range\n",
-	      (uintmax_t) diff.tv_sec, (uintmax_t) diff.tv_nsec);
-      result = 1;
-    }
-
-  sleeptime.tv_nsec = 100000000;
-  e = clock_nanosleep (child_clock, 0, &sleeptime, NULL);
-  if (e == EINVAL || e == ENOTSUP || e == ENOSYS)
-    {
-      printf ("clock_nanosleep not supported for other process clock: %s\n",
-	      strerror (e));
-    }
-  else if (e != 0)
-    {
-      printf ("clock_nanosleep on other process clock: %s\n", strerror (e));
-      result = 1;
-    }
-  else
-    {
-      struct timespec afterns;
-      if (clock_gettime (child_clock, &afterns) < 0)
-	{
-	  printf ("clock_gettime on live PID %d clock %lx => %s\n",
-		  child, (unsigned long int) child_clock, strerror (errno));
-	  result = 1;
-	}
-      else
-	{
-	  struct timespec d = { .tv_sec = afterns.tv_sec - after.tv_sec,
-				.tv_nsec = afterns.tv_nsec - after.tv_nsec };
-	  if (d.tv_nsec < 0)
-	    {
-	      --d.tv_sec;
-	      d.tv_nsec += 1000000000;
-	    }
-	  if (d.tv_sec > 0
-	      || d.tv_nsec < sleeptime.tv_nsec
-	      || d.tv_nsec > sleeptime.tv_nsec * 2)
-	    {
-	      printf ("nanosleep time %ju.%.9ju outside reasonable range\n",
-		      (uintmax_t) d.tv_sec, (uintmax_t) d.tv_nsec);
-	      result = 1;
-	    }
-	}
-    }
-
-  if (kill (child, SIGKILL) != 0)
-    {
-      perror ("kill");
-      result = 2;
-      goto done;
-    }
-
-  /* Wait long enough to let the child finish dying.  */
-
-  sleeptime.tv_nsec = 200000000;
-  if (nanosleep (&sleeptime, NULL) != 0)
-    {
-      perror ("nanosleep");
-      result = 1;
-      goto done;
-    }
-
-  struct timespec dead;
-  if (clock_gettime (child_clock, &dead) < 0)
-    {
-      printf ("clock_gettime on dead PID %d clock %lx => %s\n",
-	      child, (unsigned long int) child_clock, strerror (errno));
-      result = 1;
-      goto done;
-    }
-  /* Should be close to 0.6.  */
-  printf ("dead PID %d => %ju.%.9ju\n",
-	  child, (uintmax_t) dead.tv_sec, (uintmax_t) dead.tv_nsec);
-
-  diff.tv_sec = dead.tv_sec - after.tv_sec;
-  diff.tv_nsec = dead.tv_nsec - after.tv_nsec;
-  if (diff.tv_nsec < 0)
-    {
-      --diff.tv_sec;
-      diff.tv_nsec += 1000000000;
-    }
-  if (diff.tv_sec != 0 || diff.tv_nsec > 200000000)
-    {
-      printf ("dead - after %ju.%.9ju outside reasonable range\n",
-	      (uintmax_t) diff.tv_sec, (uintmax_t) diff.tv_nsec);
-      result = 1;
-    }
-
-  /* Now reap the child and verify that its clock is no longer valid.  */
-  {
-    int x;
-    if (waitpid (child, &x, 0) != child)
-      {
-	perror ("waitpid");
-	result = 1;
-      }
-  }
-
-  if (clock_gettime (child_clock, &dead) == 0)
-    {
-      printf ("clock_gettime on reaped PID %d clock %lx => %ju%.9ju\n",
-	      child, (unsigned long int) child_clock,
-	      (uintmax_t) dead.tv_sec, (uintmax_t) dead.tv_nsec);
-      result = 1;
-    }
-  else
-    {
-      if (errno != EINVAL)
-	result = 1;
-      printf ("clock_gettime on reaped PID %d clock %lx => %s\n",
-	      child, (unsigned long int) child_clock, strerror (errno));
-    }
-
-  if (clock_getres (child_clock, &dead) == 0)
-    {
-      printf ("clock_getres on reaped PID %d clock %lx => %ju%.9ju\n",
-	      child, (unsigned long int) child_clock,
-	      (uintmax_t) dead.tv_sec, (uintmax_t) dead.tv_nsec);
-      result = 1;
-    }
-  else
-    {
-      if (errno != EINVAL)
-	result = 1;
-      printf ("clock_getres on reaped PID %d clock %lx => %s\n",
-	      child, (unsigned long int) child_clock, strerror (errno));
-    }
-
-  return result;
-
- done:
-  {
-    if (kill (child, SIGKILL) != 0 && errno != ESRCH)
-      {
-	perror ("kill");
-	return 2;
-      }
-    int x;
-    if (waitpid (child, &x, 0) != child && errno != ECHILD)
-      {
-	perror ("waitpid");
-	return 2;
-      }
-  }
-
-  return result;
-}
-
-
-#define TIMEOUT 5
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"
diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index e3fc051..f89ef9a 100644
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -711,6 +711,11 @@ GLIBC_2.2.6 clntudp_bufcreate F
 GLIBC_2.2.6 clntudp_create F
 GLIBC_2.2.6 clntunix_create F
 GLIBC_2.2.6 clock F
+GLIBC_2.2.6 clock_getcpuclockid F
+GLIBC_2.2.6 clock_getres F
+GLIBC_2.2.6 clock_gettime F
+GLIBC_2.2.6 clock_nanosleep F
+GLIBC_2.2.6 clock_settime F
 GLIBC_2.2.6 close F
 GLIBC_2.2.6 closedir F
 GLIBC_2.2.6 closelog F
diff --git a/sysdeps/mach/hurd/i386/librt.abilist b/sysdeps/mach/hurd/i386/librt.abilist
index d5fe32b..3726e41 100644
--- a/sysdeps/mach/hurd/i386/librt.abilist
+++ b/sysdeps/mach/hurd/i386/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.2.6 aio_suspend F
 GLIBC_2.2.6 aio_suspend64 F
 GLIBC_2.2.6 aio_write F
 GLIBC_2.2.6 aio_write64 F
-GLIBC_2.2.6 clock_getcpuclockid F
-GLIBC_2.2.6 clock_getres F
-GLIBC_2.2.6 clock_gettime F
-GLIBC_2.2.6 clock_nanosleep F
-GLIBC_2.2.6 clock_settime F
 GLIBC_2.2.6 lio_listio F
 GLIBC_2.2.6 lio_listio64 F
 GLIBC_2.2.6 shm_open F
diff --git a/sysdeps/posix/clock_getres.c b/sysdeps/posix/clock_getres.c
index 5b0d8eb..7408197 100644
--- a/sysdeps/posix/clock_getres.c
+++ b/sysdeps/posix/clock_getres.c
@@ -22,7 +22,7 @@
 #include <unistd.h>
 #include <sys/param.h>
 #include <libc-internal.h>
-
+#include <shlib-compat.h>
 
 static inline int
 realtime_getres (struct timespec *res)
@@ -62,4 +62,11 @@ __clock_getres (clockid_t clock_id, struct timespec *res)
 
   return retval;
 }
-weak_alias (__clock_getres, clock_getres)
+
+versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
+/* clock_getres moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_getres, __clock_getres_2);
+compat_symbol (libc, __clock_getres_2, clock_getres, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/clock_gettime.c b/sysdeps/unix/clock_gettime.c
index f3ebbe1..3ad8ea8 100644
--- a/sysdeps/unix/clock_gettime.c
+++ b/sysdeps/unix/clock_gettime.c
@@ -17,24 +17,9 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
-#include <stdint.h>
 #include <time.h>
 #include <sys/time.h>
-#include <libc-internal.h>
-#include <ldsodefs.h>
-
-
-static inline int
-realtime_gettime (struct timespec *tp)
-{
-  struct timeval tv;
-  int retval = __gettimeofday (&tv, NULL);
-  if (retval == 0)
-    /* Convert into `timespec'.  */
-    TIMEVAL_TO_TIMESPEC (&tv, tp);
-  return retval;
-}
-
+#include <shlib-compat.h>
 
 /* Get current value of CLOCK and store it in TP.  */
 int
@@ -60,5 +45,12 @@ __clock_gettime (clockid_t clock_id, struct timespec *tp)
 
   return retval;
 }
-weak_alias (__clock_gettime, clock_gettime)
 libc_hidden_def (__clock_gettime)
+
+versioned_symbol (libc, __clock_gettime, clock_gettime, GLIBC_2_17);
+/* clock_gettime moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_gettime, __clock_gettime_2);
+compat_symbol (libc, __clock_gettime_2, clock_gettime, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/clock_nanosleep.c b/sysdeps/unix/clock_nanosleep.c
index 13dd0f4..6513e2d 100644
--- a/sysdeps/unix/clock_nanosleep.c
+++ b/sysdeps/unix/clock_nanosleep.c
@@ -20,6 +20,7 @@
 #include <errno.h>
 #include <time.h>
 #include <sysdep-cancel.h>
+#include <shlib-compat.h>
 
 /* This implementation assumes that these is only a `nanosleep' system
    call.  So we have to remap all other activities.  */
@@ -76,4 +77,11 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
 
   return __nanosleep (req, rem), 0 ? errno : 0;
 }
-weak_alias (__clock_nanosleep, clock_nanosleep)
+
+versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17);
+/* clock_nanosleep moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_nanosleep, __clock_nanosleep_2);
+compat_symbol (libc, __clock_nanosleep_2, clock_nanosleep, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/clock_settime.c b/sysdeps/unix/clock_settime.c
index 4f5640f..123b6f4 100644
--- a/sysdeps/unix/clock_settime.c
+++ b/sysdeps/unix/clock_settime.c
@@ -18,8 +18,7 @@
 #include <errno.h>
 #include <time.h>
 #include <sys/time.h>
-#include <ldsodefs.h>
-
+#include <shlib-compat.h>
 
 /* Set CLOCK to value TP.  */
 int
@@ -51,4 +50,12 @@ __clock_settime (clockid_t clock_id, const struct timespec *tp)
 
   return retval;
 }
-weak_alias (__clock_settime, clock_settime)
+libc_hidden_def (__clock_settime)
+
+versioned_symbol (libc, __clock_settime, clock_settime, GLIBC_2_17);
+/* clock_settime moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_settime, __clock_settime_2);
+compat_symbol (libc, __clock_settime_2, clock_settime, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index e22b916..77f0432 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -1863,6 +1863,11 @@ GLIBC_2.2 __xpg_sigpause F
 GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x48
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/alpha/librt.abilist b/sysdeps/unix/sysv/linux/alpha/librt.abilist
index d7a049c..71f86e0 100644
--- a/sysdeps/unix/sysv/linux/alpha/librt.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist
index a231812..e748ec2 100644
--- a/sysdeps/unix/sysv/linux/arm/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libc.abilist
@@ -759,6 +759,11 @@ GLIBC_2.4 clntudp_bufcreate F
 GLIBC_2.4 clntudp_create F
 GLIBC_2.4 clntunix_create F
 GLIBC_2.4 clock F
+GLIBC_2.4 clock_getcpuclockid F
+GLIBC_2.4 clock_getres F
+GLIBC_2.4 clock_gettime F
+GLIBC_2.4 clock_nanosleep F
+GLIBC_2.4 clock_settime F
 GLIBC_2.4 clone F
 GLIBC_2.4 close F
 GLIBC_2.4 closedir F
diff --git a/sysdeps/unix/sysv/linux/arm/librt.abilist b/sysdeps/unix/sysv/linux/arm/librt.abilist
index cfbbd27..3c0647b 100644
--- a/sysdeps/unix/sysv/linux/arm/librt.abilist
+++ b/sysdeps/unix/sysv/linux/arm/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.4 aio_suspend F
 GLIBC_2.4 aio_suspend64 F
 GLIBC_2.4 aio_write F
 GLIBC_2.4 aio_write64 F
-GLIBC_2.4 clock_getcpuclockid F
-GLIBC_2.4 clock_getres F
-GLIBC_2.4 clock_gettime F
-GLIBC_2.4 clock_nanosleep F
-GLIBC_2.4 clock_settime F
 GLIBC_2.4 lio_listio F
 GLIBC_2.4 lio_listio64 F
 GLIBC_2.4 mq_close F
diff --git a/sysdeps/unix/sysv/linux/clock_getcpuclockid.c b/sysdeps/unix/sysv/linux/clock_getcpuclockid.c
index 190a479..877f4f3 100644
--- a/sysdeps/unix/sysv/linux/clock_getcpuclockid.c
+++ b/sysdeps/unix/sysv/linux/clock_getcpuclockid.c
@@ -20,6 +20,7 @@
 #include <time.h>
 #include <unistd.h>
 #include "kernel-posix-cpu-timers.h"
+#include <shlib-compat.h>
 
 int
 __clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
@@ -45,4 +46,11 @@ __clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
   else
     return INTERNAL_SYSCALL_ERRNO (r, err);
 }
-weak_alias (__clock_getcpuclockid, clock_getcpuclockid)
+
+versioned_symbol (libc, __clock_getcpuclockid, clock_getcpuclockid, GLIBC_2_17);
+/* clock_getcpuclockid moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_getcpuclockid, __clock_getcpuclockid_2);
+compat_symbol (libc, __clock_getcpuclockid_2, clock_getcpuclockid, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/sysv/linux/clock_getres.c b/sysdeps/unix/sysv/linux/clock_getres.c
index 2517e66..1fbb638 100644
--- a/sysdeps/unix/sysv/linux/clock_getres.c
+++ b/sysdeps/unix/sysv/linux/clock_getres.c
@@ -26,10 +26,19 @@
 #endif
 #include <sysdep-vdso.h>
 
+#include <shlib-compat.h>
+
 /* Get resolution of clock.  */
 int
 __clock_getres (clockid_t clock_id, struct timespec *res)
 {
   return INLINE_VSYSCALL (clock_getres, 2, clock_id, res);
 }
-weak_alias (__clock_getres, clock_getres)
+
+versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
+/* clock_getres moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_getres, __clock_getres_2);
+compat_symbol (libc, __clock_getres_2, clock_getres, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/sysv/linux/clock_gettime.c b/sysdeps/unix/sysv/linux/clock_gettime.c
index dadfc51..3f8feb3 100644
--- a/sysdeps/unix/sysv/linux/clock_gettime.c
+++ b/sysdeps/unix/sysv/linux/clock_gettime.c
@@ -26,11 +26,20 @@
 #endif
 #include <sysdep-vdso.h>
 
+#include <shlib-compat.h>
+
 /* Get current value of CLOCK and store it in TP.  */
 int
 __clock_gettime (clockid_t clock_id, struct timespec *tp)
 {
   return INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp);
 }
-weak_alias (__clock_gettime, clock_gettime)
 libc_hidden_def (__clock_gettime)
+
+versioned_symbol (libc, __clock_gettime, clock_gettime, GLIBC_2_17);
+/* clock_gettime moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_gettime, __clock_gettime_2);
+compat_symbol (libc, __clock_gettime_2, clock_gettime, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/sysv/linux/clock_nanosleep.c b/sysdeps/unix/sysv/linux/clock_nanosleep.c
index 93d5d6e..a90da63 100644
--- a/sysdeps/unix/sysv/linux/clock_nanosleep.c
+++ b/sysdeps/unix/sysv/linux/clock_nanosleep.c
@@ -21,6 +21,7 @@
 #include <sysdep-cancel.h>
 #include "kernel-posix-cpu-timers.h"
 
+#include <shlib-compat.h>
 
 /* We can simply use the syscall.  The CPU clocks are not supported
    with this function.  */
@@ -51,4 +52,11 @@ __clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
   return (INTERNAL_SYSCALL_ERROR_P (r, err)
 	  ? INTERNAL_SYSCALL_ERRNO (r, err) : 0);
 }
-weak_alias (__clock_nanosleep, clock_nanosleep)
+
+versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17);
+/* clock_nanosleep moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_nanosleep, __clock_nanosleep_2);
+compat_symbol (libc, __clock_nanosleep_2, clock_nanosleep, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/sysv/linux/clock_settime.c b/sysdeps/unix/sysv/linux/clock_settime.c
index c71461a..21efc6c 100644
--- a/sysdeps/unix/sysv/linux/clock_settime.c
+++ b/sysdeps/unix/sysv/linux/clock_settime.c
@@ -18,6 +18,7 @@
 #include <errno.h>
 #include <sysdep.h>
 #include <time.h>
+#include <shlib-compat.h>
 
 #include "kernel-posix-cpu-timers.h"
 
@@ -34,4 +35,12 @@ __clock_settime (clockid_t clock_id, const struct timespec *tp)
 
   return INLINE_SYSCALL_CALL (clock_settime, clock_id, tp);
 }
-weak_alias (__clock_settime, clock_settime)
+libc_hidden_def (__clock_settime)
+
+versioned_symbol (libc, __clock_settime, clock_settime, GLIBC_2_17);
+/* clock_settime moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_settime, __clock_settime_2);
+compat_symbol (libc, __clock_settime_2, clock_settime, GLIBC_2_2);
+#endif
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 24b11b1..d34f040 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -615,6 +615,11 @@ GLIBC_2.2 clntudp_bufcreate F
 GLIBC_2.2 clntudp_create F
 GLIBC_2.2 clntunix_create F
 GLIBC_2.2 clock F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 clone F
 GLIBC_2.2 close F
 GLIBC_2.2 closedir F
diff --git a/sysdeps/unix/sysv/linux/hppa/librt.abilist b/sysdeps/unix/sysv/linux/hppa/librt.abilist
index 595f1b7..bb03781 100644
--- a/sysdeps/unix/sysv/linux/hppa/librt.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 9762c81..48e838f 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -1869,6 +1869,11 @@ GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x30
 GLIBC_2.2 alphasort64 F
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/i386/librt.abilist b/sysdeps/unix/sysv/linux/i386/librt.abilist
index 595f1b7..bb03781 100644
--- a/sysdeps/unix/sysv/linux/i386/librt.abilist
+++ b/sysdeps/unix/sysv/linux/i386/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 50c94ad..e9fe069 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -627,6 +627,11 @@ GLIBC_2.2 clntudp_bufcreate F
 GLIBC_2.2 clntudp_create F
 GLIBC_2.2 clntunix_create F
 GLIBC_2.2 clock F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 close F
 GLIBC_2.2 closedir F
 GLIBC_2.2 closelog F
diff --git a/sysdeps/unix/sysv/linux/ia64/librt.abilist b/sysdeps/unix/sysv/linux/ia64/librt.abilist
index 804622a..08384c9 100644
--- a/sysdeps/unix/sysv/linux/ia64/librt.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index f57be98..98f07b7 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -748,6 +748,11 @@ GLIBC_2.4 clntudp_bufcreate F
 GLIBC_2.4 clntudp_create F
 GLIBC_2.4 clntunix_create F
 GLIBC_2.4 clock F
+GLIBC_2.4 clock_getcpuclockid F
+GLIBC_2.4 clock_getres F
+GLIBC_2.4 clock_gettime F
+GLIBC_2.4 clock_nanosleep F
+GLIBC_2.4 clock_settime F
 GLIBC_2.4 clone F
 GLIBC_2.4 close F
 GLIBC_2.4 closedir F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/librt.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/librt.abilist
index cfbbd27..3c0647b 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/librt.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.4 aio_suspend F
 GLIBC_2.4 aio_suspend64 F
 GLIBC_2.4 aio_write F
 GLIBC_2.4 aio_write64 F
-GLIBC_2.4 clock_getcpuclockid F
-GLIBC_2.4 clock_getres F
-GLIBC_2.4 clock_gettime F
-GLIBC_2.4 clock_nanosleep F
-GLIBC_2.4 clock_settime F
 GLIBC_2.4 lio_listio F
 GLIBC_2.4 lio_listio64 F
 GLIBC_2.4 mq_close F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index ddc7ebc..6a60d78 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -1825,6 +1825,11 @@ GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x30
 GLIBC_2.2 alphasort64 F
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/librt.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/librt.abilist
index 595f1b7..bb03781 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/librt.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/microblaze/librt.abilist b/sysdeps/unix/sysv/linux/microblaze/librt.abilist
index fb85d87..889dfbc 100644
--- a/sysdeps/unix/sysv/linux/microblaze/librt.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/librt.abilist
@@ -14,11 +14,6 @@ GLIBC_2.18 aio_suspend F
 GLIBC_2.18 aio_suspend64 F
 GLIBC_2.18 aio_write F
 GLIBC_2.18 aio_write64 F
-GLIBC_2.18 clock_getcpuclockid F
-GLIBC_2.18 clock_getres F
-GLIBC_2.18 clock_gettime F
-GLIBC_2.18 clock_nanosleep F
-GLIBC_2.18 clock_settime F
 GLIBC_2.18 lio_listio F
 GLIBC_2.18 lio_listio64 F
 GLIBC_2.18 mq_close F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index dda9797..34a2458 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -1612,6 +1612,11 @@ GLIBC_2.2 capget F
 GLIBC_2.2 capset F
 GLIBC_2.2 cbc_crypt F
 GLIBC_2.2 clntunix_create F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 creat64 F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 des_setparity F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/librt.abilist b/sysdeps/unix/sysv/linux/mips/mips32/librt.abilist
index 84837c8..1539c1c 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/librt.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.2 aio_suspend F
 GLIBC_2.2 aio_suspend64 F
 GLIBC_2.2 aio_write F
 GLIBC_2.2 aio_write64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 lio_listio F
 GLIBC_2.2 lio_listio64 F
 GLIBC_2.2 shm_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 42e930d..176a572 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -1610,6 +1610,11 @@ GLIBC_2.2 capget F
 GLIBC_2.2 capset F
 GLIBC_2.2 cbc_crypt F
 GLIBC_2.2 clntunix_create F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 creat64 F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 des_setparity F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/librt.abilist b/sysdeps/unix/sysv/linux/mips/mips64/librt.abilist
index 84837c8..1539c1c 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/librt.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.2 aio_suspend F
 GLIBC_2.2 aio_suspend64 F
 GLIBC_2.2 aio_write F
 GLIBC_2.2 aio_write64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 lio_listio F
 GLIBC_2.2 lio_listio64 F
 GLIBC_2.2 shm_open F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index f89b44f..5a66ffd 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -1611,6 +1611,11 @@ GLIBC_2.2 capget F
 GLIBC_2.2 capset F
 GLIBC_2.2 cbc_crypt F
 GLIBC_2.2 clntunix_create F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 creat64 F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 des_setparity F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 1486af1..a817f33 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -1607,6 +1607,11 @@ GLIBC_2.2 capget F
 GLIBC_2.2 capset F
 GLIBC_2.2 cbc_crypt F
 GLIBC_2.2 clntunix_create F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 creat64 F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 des_setparity F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 45839ed..d5e121b 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -1830,6 +1830,11 @@ GLIBC_2.2 __xstat64 F
 GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x30
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist
index 595f1b7..bb03781 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 344e5ae..3dfddbd 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -1834,6 +1834,11 @@ GLIBC_2.2 __xstat64 F
 GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x30
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
index 8c1781a..06ce341 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist
@@ -670,6 +670,11 @@ GLIBC_2.3 clntudp_bufcreate F
 GLIBC_2.3 clntudp_create F
 GLIBC_2.3 clntunix_create F
 GLIBC_2.3 clock F
+GLIBC_2.3 clock_getcpuclockid F
+GLIBC_2.3 clock_getres F
+GLIBC_2.3 clock_gettime F
+GLIBC_2.3 clock_nanosleep F
+GLIBC_2.3 clock_settime F
 GLIBC_2.3 clone F
 GLIBC_2.3 close F
 GLIBC_2.3 closedir F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/librt.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/librt.abilist
index e76b7eb..6a5bd96 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/librt.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.3 aio_suspend F
 GLIBC_2.3 aio_suspend64 F
 GLIBC_2.3 aio_write F
 GLIBC_2.3 aio_write64 F
-GLIBC_2.3 clock_getcpuclockid F
-GLIBC_2.3 clock_getres F
-GLIBC_2.3 clock_gettime F
-GLIBC_2.3 clock_nanosleep F
-GLIBC_2.3 clock_settime F
 GLIBC_2.3 lio_listio F
 GLIBC_2.3 lio_listio64 F
 GLIBC_2.3 shm_open F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 3a5ec2a..02ff949 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -1829,6 +1829,11 @@ GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x30
 GLIBC_2.2 alphasort64 F
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/librt.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/librt.abilist
index 595f1b7..bb03781 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/librt.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 3b54655..96693d4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -632,6 +632,11 @@ GLIBC_2.2 clntudp_bufcreate F
 GLIBC_2.2 clntudp_create F
 GLIBC_2.2 clntunix_create F
 GLIBC_2.2 clock F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 clone F
 GLIBC_2.2 close F
 GLIBC_2.2 closedir F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/librt.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/librt.abilist
index 41be3bb..5905498 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/librt.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.2 aio_suspend F
 GLIBC_2.2 aio_suspend64 F
 GLIBC_2.2 aio_write F
 GLIBC_2.2 aio_write64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 lio_listio F
 GLIBC_2.2 lio_listio64 F
 GLIBC_2.2 shm_open F
diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist
index 1f4e648..b126bda 100644
--- a/sysdeps/unix/sysv/linux/sh/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libc.abilist
@@ -618,6 +618,11 @@ GLIBC_2.2 clntudp_bufcreate F
 GLIBC_2.2 clntudp_create F
 GLIBC_2.2 clntunix_create F
 GLIBC_2.2 clock F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 clone F
 GLIBC_2.2 close F
 GLIBC_2.2 closedir F
diff --git a/sysdeps/unix/sysv/linux/sh/librt.abilist b/sysdeps/unix/sysv/linux/sh/librt.abilist
index 595f1b7..bb03781 100644
--- a/sysdeps/unix/sysv/linux/sh/librt.abilist
+++ b/sysdeps/unix/sysv/linux/sh/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index d308ac8..63b78d8 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -1826,6 +1826,11 @@ GLIBC_2.2 __xstat64 F
 GLIBC_2.2 _flushlbf F
 GLIBC_2.2 _res_hconf D 0x30
 GLIBC_2.2 bind_textdomain_codeset F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 dcngettext F
 GLIBC_2.2 dngettext F
 GLIBC_2.2 fgetpos F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/librt.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/librt.abilist
index cb874f4..38f0aad 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/librt.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index 6731ebf..a899eb6 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -660,6 +660,11 @@ GLIBC_2.2 clntudp_bufcreate F
 GLIBC_2.2 clntudp_create F
 GLIBC_2.2 clntunix_create F
 GLIBC_2.2 clock F
+GLIBC_2.2 clock_getcpuclockid F
+GLIBC_2.2 clock_getres F
+GLIBC_2.2 clock_gettime F
+GLIBC_2.2 clock_nanosleep F
+GLIBC_2.2 clock_settime F
 GLIBC_2.2 clone F
 GLIBC_2.2 close F
 GLIBC_2.2 closedir F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/librt.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/librt.abilist
index d7a049c..71f86e0 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/librt.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/librt.abilist
@@ -15,11 +15,6 @@ GLIBC_2.1 aio_write F
 GLIBC_2.1 aio_write64 F
 GLIBC_2.1 lio_listio F
 GLIBC_2.1 lio_listio64 F
-GLIBC_2.2 clock_getcpuclockid F
-GLIBC_2.2 clock_getres F
-GLIBC_2.2 clock_gettime F
-GLIBC_2.2 clock_nanosleep F
-GLIBC_2.2 clock_settime F
 GLIBC_2.2 shm_open F
 GLIBC_2.2 shm_unlink F
 GLIBC_2.2 timer_create F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index 816e4a7..0ebb018 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -621,6 +621,11 @@ GLIBC_2.2.5 clntudp_bufcreate F
 GLIBC_2.2.5 clntudp_create F
 GLIBC_2.2.5 clntunix_create F
 GLIBC_2.2.5 clock F
+GLIBC_2.2.5 clock_getcpuclockid F
+GLIBC_2.2.5 clock_getres F
+GLIBC_2.2.5 clock_gettime F
+GLIBC_2.2.5 clock_nanosleep F
+GLIBC_2.2.5 clock_settime F
 GLIBC_2.2.5 clone F
 GLIBC_2.2.5 close F
 GLIBC_2.2.5 closedir F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/librt.abilist b/sysdeps/unix/sysv/linux/x86_64/64/librt.abilist
index e2e8b60..95e3f22 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/librt.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/librt.abilist
@@ -13,11 +13,6 @@ GLIBC_2.2.5 aio_suspend F
 GLIBC_2.2.5 aio_suspend64 F
 GLIBC_2.2.5 aio_write F
 GLIBC_2.2.5 aio_write64 F
-GLIBC_2.2.5 clock_getcpuclockid F
-GLIBC_2.2.5 clock_getres F
-GLIBC_2.2.5 clock_gettime F
-GLIBC_2.2.5 clock_nanosleep F
-GLIBC_2.2.5 clock_settime F
 GLIBC_2.2.5 lio_listio F
 GLIBC_2.2.5 lio_listio64 F
 GLIBC_2.2.5 shm_open F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 6fee16a..0b6b3fa 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -660,6 +660,11 @@ GLIBC_2.16 clntudp_create F
 GLIBC_2.16 clntunix_create F
 GLIBC_2.16 clock F
 GLIBC_2.16 clock_adjtime F
+GLIBC_2.16 clock_getcpuclockid F
+GLIBC_2.16 clock_getres F
+GLIBC_2.16 clock_gettime F
+GLIBC_2.16 clock_nanosleep F
+GLIBC_2.16 clock_settime F
 GLIBC_2.16 clone F
 GLIBC_2.16 close F
 GLIBC_2.16 closedir F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/librt.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/librt.abilist
index 94e84e4..66969fb 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/librt.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/librt.abilist
@@ -14,11 +14,6 @@ GLIBC_2.16 aio_suspend F
 GLIBC_2.16 aio_suspend64 F
 GLIBC_2.16 aio_write F
 GLIBC_2.16 aio_write64 F
-GLIBC_2.16 clock_getcpuclockid F
-GLIBC_2.16 clock_getres F
-GLIBC_2.16 clock_gettime F
-GLIBC_2.16 clock_nanosleep F
-GLIBC_2.16 clock_settime F
 GLIBC_2.16 lio_listio F
 GLIBC_2.16 lio_listio64 F
 GLIBC_2.16 mq_close F
diff --git a/time/Makefile b/time/Makefile
index ec3e39d..6a68481 100644
--- a/time/Makefile
+++ b/time/Makefile
@@ -36,14 +36,18 @@ routines := offtime asctime clock ctime ctime_r difftime \
 	    stime dysize timegm ftime			 \
 	    getdate strptime strptime_l			 \
 	    strftime wcsftime strftime_l wcsftime_l	 \
-	    timespec_get
+	    timespec_get 	 			 \
+	    clock_getcpuclockid clock_getres 		 \
+	    clock_gettime clock_settime clock_nanosleep
+
 aux :=	    era alt_digit lc-time-cleanup
 
 tests	:= test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
 	   tst-getdate tst-mktime tst-mktime2 tst-ftime_l tst-strftime \
 	   tst-mktime3 tst-strptime2 bug-asctime bug-asctime_r bug-mktime1 \
 	   tst-strptime3 bug-getdate1 tst-strptime-whitespace tst-ftime \
-	   tst-tzname tst-y2039
+	   tst-tzname tst-y2039 \
+	   tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1
 
 include ../Rules
 
diff --git a/time/Versions b/time/Versions
index fd83818..8788e19 100644
--- a/time/Versions
+++ b/time/Versions
@@ -49,6 +49,10 @@ libc {
   GLIBC_2.2 {
     # w*
     wcsftime;
+
+    # c*; actually in librt in version 2.2, moved to libc in 2.17
+    clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
+    clock_nanosleep;
   }
   GLIBC_2.3 {
     # these internal names are used by libstdc++
@@ -65,4 +69,13 @@ libc {
   GLIBC_2.16 {
     timespec_get;
   }
+  GLIBC_2.17 {
+    # c*
+    clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
+    clock_nanosleep;
+  }
+  GLIBC_PRIVATE {
+    # same as clock_gettime; used in other libraries
+    __clock_gettime;
+  }
 }
diff --git a/time/clock_getcpuclockid.c b/time/clock_getcpuclockid.c
new file mode 100644
index 0000000..81b8624
--- /dev/null
+++ b/time/clock_getcpuclockid.c
@@ -0,0 +1,47 @@
+/* Get a clockid_t for the process CPU clock of a given process.  Generic.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <unistd.h>
+#include <shlib-compat.h>
+
+int
+__clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
+{
+  /* We don't allow any process ID but our own.  */
+  if (pid != 0 && pid != getpid ())
+    return EPERM;
+
+#ifdef CLOCK_PROCESS_CPUTIME_ID
+  /* Store the number.  */
+  *clock_id = CLOCK_PROCESS_CPUTIME_ID;
+
+  return 0;
+#else
+  /* We don't have a timer for that.  */
+  return ENOENT;
+#endif
+}
+versioned_symbol (libc, __clock_getcpuclockid, clock_getcpuclockid, GLIBC_2_17);
+/* clock_getcpuclockid moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_getcpuclockid, __clock_getcpuclockid_2);
+compat_symbol (libc, __clock_getcpuclockid_2, clock_getcpuclockid, GLIBC_2_2);
+#endif
diff --git a/time/clock_getres.c b/time/clock_getres.c
new file mode 100644
index 0000000..e831539
--- /dev/null
+++ b/time/clock_getres.c
@@ -0,0 +1,39 @@
+/* Get the resolution of a clock.  Stub version.
+   Copyright (C) 1999-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <shlib-compat.h>
+
+/* Get resolution of clock.  */
+int
+__clock_getres (clockid_t clock_id, struct timespec *res)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+
+versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
+/* clock_getres moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_getres, __clock_getres_2);
+compat_symbol (libc, __clock_getres_2, clock_getres, GLIBC_2_2);
+#endif
+
+stub_warning (clock_getres)
diff --git a/time/clock_gettime.c b/time/clock_gettime.c
new file mode 100644
index 0000000..4a5f808
--- /dev/null
+++ b/time/clock_gettime.c
@@ -0,0 +1,40 @@
+/* Get the current value of a clock.  Stub version.
+   Copyright (C) 1999-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <shlib-compat.h>
+
+/* Get current value of CLOCK and store it in TP.  */
+int
+__clock_gettime (clockid_t clock_id, struct timespec *tp)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__clock_gettime)
+
+versioned_symbol (libc, __clock_gettime, clock_gettime, GLIBC_2_17);
+/* clock_gettime moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_gettime, __clock_gettime_2);
+compat_symbol (libc, __clock_gettime_2, clock_gettime, GLIBC_2_2);
+#endif
+
+stub_warning (clock_gettime)
diff --git a/time/clock_nanosleep.c b/time/clock_nanosleep.c
new file mode 100644
index 0000000..a314b16
--- /dev/null
+++ b/time/clock_nanosleep.c
@@ -0,0 +1,46 @@
+/* High-resolution sleep with the specified clock.  Stub version.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <shlib-compat.h>
+
+int
+__clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *req,
+		   struct timespec *rem)
+{
+  if (__builtin_expect (req->tv_nsec, 0) < 0
+      || __builtin_expect (req->tv_nsec, 0) >= 1000000000)
+    return EINVAL;
+
+  if (flags != TIMER_ABSTIME && flags != 0)
+    return EINVAL;
+
+  /* Not implemented.  */
+  return ENOSYS;
+}
+
+versioned_symbol (libc, __clock_nanosleep, clock_nanosleep, GLIBC_2_17);
+/* clock_nanosleep moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_nanosleep, __clock_nanosleep_2);
+compat_symbol (libc, __clock_nanosleep_2, clock_nanosleep, GLIBC_2_2);
+#endif
+
+stub_warning (clock_nanosleep)
diff --git a/time/clock_settime.c b/time/clock_settime.c
new file mode 100644
index 0000000..2091239
--- /dev/null
+++ b/time/clock_settime.c
@@ -0,0 +1,40 @@
+/* Set a clock to a given value.  Stub version.
+   Copyright (C) 1999-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <time.h>
+#include <shlib-compat.h>
+
+/* Set CLOCK to value TP.  */
+int
+__clock_settime (clockid_t clock_id, const struct timespec *tp)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+libc_hidden_def (__clock_settime)
+
+versioned_symbol (libc, __clock_settime, clock_settime, GLIBC_2_17);
+/* clock_settime moved to libc in version 2.17;
+   old binaries may expect the symbol version it had in librt.  */
+#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
+strong_alias (__clock_settime, __clock_settime_2);
+compat_symbol (libc, __clock_settime_2, clock_settime, GLIBC_2_2);
+#endif
+
+stub_warning (clock_settime)
diff --git a/time/tst-clock.c b/time/tst-clock.c
new file mode 100644
index 0000000..bec76d0
--- /dev/null
+++ b/time/tst-clock.c
@@ -0,0 +1,124 @@
+/* Test program for POSIX clock_* functions.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <stdint.h>
+
+
+/* We want to see output immediately.  */
+#define STDOUT_UNBUFFERED
+
+/* We expect to run at least 10 seconds.  */
+#define TIMEOUT 15
+
+static int
+clock_test (clockid_t cl)
+{
+  struct timespec old_ts;
+  struct timespec ts;
+  struct timespec waitit;
+  int result = 0;
+  int i;
+
+  memset (&ts, '\0', sizeof ts);
+
+  waitit.tv_sec = 0;
+  waitit.tv_nsec = 500000000;
+
+  /* Get and print resolution of the clock.  */
+  if (clock_getres (cl, &ts) == 0)
+    {
+      if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000)
+	{
+	  printf ("clock %d: nanosecond value of resolution wrong\n", cl);
+	  result = 1;
+	}
+      else
+	printf ("clock %d: resolution = %jd.%09jd secs\n",
+		cl, (intmax_t) ts.tv_sec, (intmax_t) ts.tv_nsec);
+    }
+  else
+    {
+      printf ("clock %d: cannot get resolution\n", cl);
+      result = 1;
+    }
+
+  memset (&ts, '\0', sizeof ts);
+  memset (&old_ts, '\0', sizeof old_ts);
+
+  /* Next get the current time value a few times.  */
+  for (i = 0; i < 10; ++i)
+    {
+      if (clock_gettime (cl, &ts) == 0)
+	{
+	  if (ts.tv_nsec < 0 || ts.tv_nsec >= 1000000000)
+	    {
+	      printf ("clock %d: nanosecond value of time wrong (try %d)\n",
+		      cl, i);
+	      result = 1;
+	    }
+	  else
+	    {
+	      printf ("clock %d: time = %jd.%09jd secs\n",
+		      cl, (intmax_t) ts.tv_sec, (intmax_t) ts.tv_nsec);
+
+	      if (memcmp (&ts, &old_ts, sizeof ts) == 0)
+		{
+		  printf ("clock %d: time hasn't changed (try %d)\n", cl, i);
+		  result = 1;
+
+		  old_ts = ts;
+		}
+	    }
+	}
+      else
+	{
+	  printf ("clock %d: cannot get time (try %d)\n", cl, i);
+	  result = 1;
+	}
+
+      /* Wait a bit before the next iteration.  */
+      nanosleep (&waitit, NULL);
+    }
+
+  return result;
+}
+
+static int
+do_test (void)
+{
+  clockid_t cl;
+  int result;
+
+  result = clock_test (CLOCK_REALTIME);
+
+  if (clock_getcpuclockid (0, &cl) == 0)
+    /* XXX It's not yet a bug when this fails.  */
+    clock_test (cl);
+  else
+	  printf("CPU clock unavailble, skipping test\n");
+
+  return result;
+}
+#define TEST_FUNCTION do_test ()
+
+
+#include "../test-skeleton.c"
diff --git a/time/tst-clock2.c b/time/tst-clock2.c
new file mode 100644
index 0000000..4c8fb9f
--- /dev/null
+++ b/time/tst-clock2.c
@@ -0,0 +1,43 @@
+/* Test setting the monotonic clock.  */
+
+#include <time.h>
+#include <unistd.h>
+
+#if defined CLOCK_MONOTONIC && defined _POSIX_MONOTONIC_CLOCK
+
+# include <errno.h>
+# include <stdio.h>
+
+static int
+do_test (void)
+{
+  if (sysconf (_SC_MONOTONIC_CLOCK) <= 0)
+    return 0;
+
+  struct timespec ts;
+  if (clock_gettime (CLOCK_MONOTONIC, &ts) != 0)
+    {
+      puts ("clock_gettime(CLOCK_MONOTONIC) failed");
+      return 1;
+    }
+
+  /* Setting the monotonic clock must fail.  */
+  if (clock_settime (CLOCK_MONOTONIC, &ts) != -1)
+    {
+      puts ("clock_settime(CLOCK_MONOTONIC) did not fail");
+      return 1;
+    }
+  if (errno != EINVAL)
+    {
+      printf ("clock_settime(CLOCK_MONOTONIC) set errno to %d, expected %d\n",
+	      errno, EINVAL);
+      return 1;
+    }
+  return 0;
+}
+# define TEST_FUNCTION do_test ()
+
+#else
+# define TEST_FUNCTION	0
+#endif
+#include "../test-skeleton.c"
diff --git a/time/tst-clock_nanosleep.c b/time/tst-clock_nanosleep.c
new file mode 100644
index 0000000..eb2b906
--- /dev/null
+++ b/time/tst-clock_nanosleep.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 2003-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <time.h>
+
+
+/* Test that clock_nanosleep() does sleep.  */
+static int
+do_test (void)
+{
+  /* Current time.  */
+  struct timeval tv1;
+  (void) gettimeofday (&tv1, NULL);
+
+  struct timespec ts;
+  ts.tv_sec = 1;
+  ts.tv_nsec = 0;
+  TEMP_FAILURE_RETRY (clock_nanosleep (CLOCK_REALTIME, 0, &ts, &ts));
+
+  /* At least one second must have passed.  */
+  struct timeval tv2;
+  (void) gettimeofday (&tv2, NULL);
+
+  tv2.tv_sec -= tv1.tv_sec;
+  tv2.tv_usec -= tv1.tv_usec;
+  if (tv2.tv_usec < 0)
+    --tv2.tv_sec;
+
+  if (tv2.tv_sec < 1)
+    {
+      puts ("clock_nanosleep didn't sleep long enough");
+      return 1;
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/time/tst-cpuclock1.c b/time/tst-cpuclock1.c
new file mode 100644
index 0000000..f6d76e3
--- /dev/null
+++ b/time/tst-cpuclock1.c
@@ -0,0 +1,321 @@
+/* Test program for process CPU clocks.
+   Copyright (C) 2004-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdint.h>
+#include <sys/wait.h>
+
+/* This function is intended to rack up both user and system time.  */
+static void
+chew_cpu (void)
+{
+  while (1)
+    {
+      static volatile char buf[4096];
+      for (int i = 0; i < 100; ++i)
+	for (size_t j = 0; j < sizeof buf; ++j)
+	  buf[j] = 0xaa;
+      int nullfd = open ("/dev/null", O_WRONLY);
+      for (int i = 0; i < 100; ++i)
+	for (size_t j = 0; j < sizeof buf; ++j)
+	  buf[j] = 0xbb;
+      write (nullfd, (char *) buf, sizeof buf);
+      close (nullfd);
+      if (getppid () == 1)
+	_exit (2);
+    }
+}
+
+static int
+do_test (void)
+{
+  int result = 0;
+  clockid_t cl;
+  int e;
+  pid_t dead_child, child;
+
+  /* Fork a child and let it die, to give us a PID known not be valid
+     (assuming PIDs don't wrap around during the test).  */
+  {
+    dead_child = fork ();
+    if (dead_child == 0)
+      _exit (0);
+    if (dead_child < 0)
+      {
+	perror ("fork");
+	return 1;
+      }
+    int x;
+    if (wait (&x) != dead_child)
+      {
+	perror ("wait");
+	return 2;
+      }
+  }
+
+  /* POSIX says we should get ESRCH for this.  */
+  e = clock_getcpuclockid (dead_child, &cl);
+  if (e != ENOSYS && e != ESRCH && e != EPERM)
+    {
+      printf ("clock_getcpuclockid on dead PID %d => %s\n",
+	      dead_child, strerror (e));
+      result = 1;
+    }
+
+  /* Now give us a live child eating up CPU time.  */
+  child = fork ();
+  if (child == 0)
+    {
+      chew_cpu ();
+      _exit (1);
+    }
+  if (child < 0)
+    {
+      perror ("fork");
+      return 1;
+    }
+
+  e = clock_getcpuclockid (child, &cl);
+  if (e == EPERM)
+    {
+      puts ("clock_getcpuclockid does not support other processes");
+      goto done;
+    }
+  if (e != 0)
+    {
+      printf ("clock_getcpuclockid on live PID %d => %s\n",
+	      child, strerror (e));
+      result = 1;
+      goto done;
+    }
+
+  const clockid_t child_clock = cl;
+  struct timespec res;
+  if (clock_getres (child_clock, &res) < 0)
+    {
+      printf ("clock_getres on live PID %d clock %lx => %s\n",
+	      child, (unsigned long int) child_clock, strerror (errno));
+      result = 1;
+      goto done;
+    }
+  printf ("live PID %d clock %lx resolution %ju.%.9ju\n",
+	  child, (unsigned long int) child_clock,
+	  (uintmax_t) res.tv_sec, (uintmax_t) res.tv_nsec);
+
+  struct timespec before, after;
+  if (clock_gettime (child_clock, &before) < 0)
+    {
+      printf ("clock_gettime on live PID %d clock %lx => %s\n",
+	      child, (unsigned long int) child_clock, strerror (errno));
+      result = 1;
+      goto done;
+    }
+  /* Should be close to 0.0.  */
+  printf ("live PID %d before sleep => %ju.%.9ju\n",
+	  child, (uintmax_t) before.tv_sec, (uintmax_t) before.tv_nsec);
+
+  struct timespec sleeptime = { .tv_nsec = 500000000 };
+  if (nanosleep (&sleeptime, NULL) != 0)
+    {
+      perror ("nanosleep");
+      result = 1;
+      goto done;
+    }
+
+  if (clock_gettime (child_clock, &after) < 0)
+    {
+      printf ("clock_gettime on live PID %d clock %lx => %s\n",
+	      child, (unsigned long int) child_clock, strerror (errno));
+      result = 1;
+      goto done;
+    }
+  /* Should be close to 0.5.  */
+  printf ("live PID %d after sleep => %ju.%.9ju\n",
+	  child, (uintmax_t) after.tv_sec, (uintmax_t) after.tv_nsec);
+
+  struct timespec diff = { .tv_sec = after.tv_sec - before.tv_sec,
+			   .tv_nsec = after.tv_nsec - before.tv_nsec };
+  if (diff.tv_nsec < 0)
+    {
+      --diff.tv_sec;
+      diff.tv_nsec += 1000000000;
+    }
+  if (diff.tv_sec != 0
+      || diff.tv_nsec > 600000000
+      || diff.tv_nsec < 100000000)
+    {
+      printf ("before - after %ju.%.9ju outside reasonable range\n",
+	      (uintmax_t) diff.tv_sec, (uintmax_t) diff.tv_nsec);
+      result = 1;
+    }
+
+  sleeptime.tv_nsec = 100000000;
+  e = clock_nanosleep (child_clock, 0, &sleeptime, NULL);
+  if (e == EINVAL || e == ENOTSUP || e == ENOSYS)
+    {
+      printf ("clock_nanosleep not supported for other process clock: %s\n",
+	      strerror (e));
+    }
+  else if (e != 0)
+    {
+      printf ("clock_nanosleep on other process clock: %s\n", strerror (e));
+      result = 1;
+    }
+  else
+    {
+      struct timespec afterns;
+      if (clock_gettime (child_clock, &afterns) < 0)
+	{
+	  printf ("clock_gettime on live PID %d clock %lx => %s\n",
+		  child, (unsigned long int) child_clock, strerror (errno));
+	  result = 1;
+	}
+      else
+	{
+	  struct timespec d = { .tv_sec = afterns.tv_sec - after.tv_sec,
+				.tv_nsec = afterns.tv_nsec - after.tv_nsec };
+	  if (d.tv_nsec < 0)
+	    {
+	      --d.tv_sec;
+	      d.tv_nsec += 1000000000;
+	    }
+	  if (d.tv_sec > 0
+	      || d.tv_nsec < sleeptime.tv_nsec
+	      || d.tv_nsec > sleeptime.tv_nsec * 2)
+	    {
+	      printf ("nanosleep time %ju.%.9ju outside reasonable range\n",
+		      (uintmax_t) d.tv_sec, (uintmax_t) d.tv_nsec);
+	      result = 1;
+	    }
+	}
+    }
+
+  if (kill (child, SIGKILL) != 0)
+    {
+      perror ("kill");
+      result = 2;
+      goto done;
+    }
+
+  /* Wait long enough to let the child finish dying.  */
+
+  sleeptime.tv_nsec = 200000000;
+  if (nanosleep (&sleeptime, NULL) != 0)
+    {
+      perror ("nanosleep");
+      result = 1;
+      goto done;
+    }
+
+  struct timespec dead;
+  if (clock_gettime (child_clock, &dead) < 0)
+    {
+      printf ("clock_gettime on dead PID %d clock %lx => %s\n",
+	      child, (unsigned long int) child_clock, strerror (errno));
+      result = 1;
+      goto done;
+    }
+  /* Should be close to 0.6.  */
+  printf ("dead PID %d => %ju.%.9ju\n",
+	  child, (uintmax_t) dead.tv_sec, (uintmax_t) dead.tv_nsec);
+
+  diff.tv_sec = dead.tv_sec - after.tv_sec;
+  diff.tv_nsec = dead.tv_nsec - after.tv_nsec;
+  if (diff.tv_nsec < 0)
+    {
+      --diff.tv_sec;
+      diff.tv_nsec += 1000000000;
+    }
+  if (diff.tv_sec != 0 || diff.tv_nsec > 200000000)
+    {
+      printf ("dead - after %ju.%.9ju outside reasonable range\n",
+	      (uintmax_t) diff.tv_sec, (uintmax_t) diff.tv_nsec);
+      result = 1;
+    }
+
+  /* Now reap the child and verify that its clock is no longer valid.  */
+  {
+    int x;
+    if (waitpid (child, &x, 0) != child)
+      {
+	perror ("waitpid");
+	result = 1;
+      }
+  }
+
+  if (clock_gettime (child_clock, &dead) == 0)
+    {
+      printf ("clock_gettime on reaped PID %d clock %lx => %ju%.9ju\n",
+	      child, (unsigned long int) child_clock,
+	      (uintmax_t) dead.tv_sec, (uintmax_t) dead.tv_nsec);
+      result = 1;
+    }
+  else
+    {
+      if (errno != EINVAL)
+	result = 1;
+      printf ("clock_gettime on reaped PID %d clock %lx => %s\n",
+	      child, (unsigned long int) child_clock, strerror (errno));
+    }
+
+  if (clock_getres (child_clock, &dead) == 0)
+    {
+      printf ("clock_getres on reaped PID %d clock %lx => %ju%.9ju\n",
+	      child, (unsigned long int) child_clock,
+	      (uintmax_t) dead.tv_sec, (uintmax_t) dead.tv_nsec);
+      result = 1;
+    }
+  else
+    {
+      if (errno != EINVAL)
+	result = 1;
+      printf ("clock_getres on reaped PID %d clock %lx => %s\n",
+	      child, (unsigned long int) child_clock, strerror (errno));
+    }
+
+  return result;
+
+ done:
+  {
+    if (kill (child, SIGKILL) != 0 && errno != ESRCH)
+      {
+	perror ("kill");
+	return 2;
+      }
+    int x;
+    if (waitpid (child, &x, 0) != child && errno != ECHILD)
+      {
+	perror ("waitpid");
+	return 2;
+      }
+  }
+
+  return result;
+}
+
+
+#define TIMEOUT 5
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"