Gnulib durch boost ersetzt

7 files changed, 0 insertions, 3525 deletions

diff --git a/lib/glthread/cond.c b/lib/glthread/cond.c
deleted file mode 100644
index 909eb71..0000000
--- a/lib/glthread/cond.c
+++ /dev/null
@@ -1,464 +0,0 @@
-/* Condition variables for multithreading.
-   Copyright (C) 2008 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Yoann Vandoorselaere <yoann@prelude-ids.org>, 2008,
-   and Bruno Haible <bruno@clisp.org>, 2008.  */
-
-#include <config.h>
-
-#include "glthread/cond.h"
-
-/* ========================================================================= */
-
-#if USE_PTH_THREADS
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-int
-glthread_cond_timedwait_multithreaded (gl_cond_t *cond,
-				       gl_lock_t *lock,
-				       struct timespec *abstime)
-{
-  int ret, status;
-  pth_event_t ev;
-
-  ev = pth_event (PTH_EVENT_TIME, pth_time (abstime->tv_sec, abstime->tv_nsec / 1000));
-  ret = pth_cond_await (cond, lock, ev);
-
-  status = pth_event_status (ev);
-  pth_event_free (ev, PTH_FREE_THIS);
-
-  if (status == PTH_STATUS_OCCURRED)
-    return ETIMEDOUT;
-
-  return ret;
-}
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_SOLARIS_THREADS
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-int
-glthread_cond_timedwait_multithreaded (gl_cond_t *cond,
-				       gl_lock_t *lock,
-				       struct timespec *abstime)
-{
-  int ret;
-
-  ret = cond_timedwait (cond, lock, abstime);
-  if (ret == ETIME)
-    return ETIMEDOUT;
-  return ret;
-}
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_WIN32_THREADS
-
-#include <sys/time.h>
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-/* In this file, the waitqueues are implemented as linked lists.  */
-#define gl_waitqueue_t gl_linked_waitqueue_t
-
-/* All links of a circular list, except the anchor, are of this type, carrying
-   a payload.  */
-struct gl_waitqueue_element
-{
-  struct gl_waitqueue_link link; /* must be the first field! */
-  HANDLE event; /* Waiting thread, represented by an event.
-                   This field is immutable once initialized. */
-};
-
-static inline void
-gl_waitqueue_init (gl_waitqueue_t *wq)
-{
-  wq->wq_list.wql_next = &wq->wq_list;
-  wq->wq_list.wql_prev = &wq->wq_list;
-}
-
-/* Enqueues the current thread, represented by an event, in a wait queue.
-   Returns NULL if an allocation failure occurs.  */
-static struct gl_waitqueue_element *
-gl_waitqueue_add (gl_waitqueue_t *wq)
-{
-  struct gl_waitqueue_element *elt;
-  HANDLE event;
-
-  /* Allocate the memory for the waitqueue element on the heap, not on the
-     thread's stack.  If the thread exits unexpectedly, we prefer to leak
-     some memory rather than to access unavailable memory and crash.  */
-  elt =
-    (struct gl_waitqueue_element *)
-    malloc (sizeof (struct gl_waitqueue_element));
-  if (elt == NULL)
-    /* No more memory.  */
-    return NULL;
-
-  /* Whether the created event is a manual-reset one or an auto-reset one,
-     does not matter, since we will wait on it only once.  */
-  event = CreateEvent (NULL, TRUE, FALSE, NULL);
-  if (event == INVALID_HANDLE_VALUE)
-    {
-      /* No way to allocate an event.  */
-      free (elt);
-      return NULL;
-    }
-  elt->event = event;
-  /* Insert elt at the end of the circular list.  */
-  (elt->link.wql_prev = wq->wq_list.wql_prev)->wql_next = &elt->link;
-  (elt->link.wql_next = &wq->wq_list)->wql_prev = &elt->link;
-  return elt;
-}
-
-/* Removes the current thread, represented by a 'struct gl_waitqueue_element *',
-   from a wait queue.
-   Returns true if is was found and removed, false if it was not present.  */
-static inline bool
-gl_waitqueue_remove (gl_waitqueue_t *wq, struct gl_waitqueue_element *elt)
-{
-  if (elt->link.wql_next != NULL && elt->link.wql_prev != NULL)
-    {
-      /* Remove elt from the circular list.  */
-      struct gl_waitqueue_link *prev = elt->link.wql_prev;
-      struct gl_waitqueue_link *next = elt->link.wql_next;
-      prev->wql_next = next;
-      next->wql_prev = prev;
-      elt->link.wql_next = NULL;
-      elt->link.wql_prev = NULL;
-      return true;
-    }
-  else
-    return false;
-}
-
-/* Notifies the first thread from a wait queue and dequeues it.  */
-static inline void
-gl_waitqueue_notify_first (gl_waitqueue_t *wq)
-{
-  if (wq->wq_list.wql_next != &wq->wq_list)
-    {
-      struct gl_waitqueue_element *elt =
-	(struct gl_waitqueue_element *) wq->wq_list.wql_next;
-      struct gl_waitqueue_link *prev;
-      struct gl_waitqueue_link *next;
-
-      /* Remove elt from the circular list.  */
-      prev = &wq->wq_list; /* = elt->link.wql_prev; */
-      next = elt->link.wql_next;
-      prev->wql_next = next;
-      next->wql_prev = prev;
-      elt->link.wql_next = NULL;
-      elt->link.wql_prev = NULL;
-
-      SetEvent (elt->event);
-      /* After the SetEvent, this thread cannot access *elt any more, because
-	 the woken-up thread will quickly call  free (elt).  */
-    }
-}
-
-/* Notifies all threads from a wait queue and dequeues them all.  */
-static inline void
-gl_waitqueue_notify_all (gl_waitqueue_t *wq)
-{
-  struct gl_waitqueue_link *l;
-
-  for (l = wq->wq_list.wql_next; l != &wq->wq_list; )
-    {
-      struct gl_waitqueue_element *elt = (struct gl_waitqueue_element *) l;
-      struct gl_waitqueue_link *prev;
-      struct gl_waitqueue_link *next;
-
-      /* Remove elt from the circular list.  */
-      prev = &wq->wq_list; /* = elt->link.wql_prev; */
-      next = elt->link.wql_next;
-      prev->wql_next = next;
-      next->wql_prev = prev;
-      elt->link.wql_next = NULL;
-      elt->link.wql_prev = NULL;
-
-      SetEvent (elt->event);
-      /* After the SetEvent, this thread cannot access *elt any more, because
-	 the woken-up thread will quickly call  free (elt).  */
-
-      l = next;
-    }
-  if (!(wq->wq_list.wql_next == &wq->wq_list
-        && wq->wq_list.wql_prev == &wq->wq_list))
-    abort ();
-}
-
-int
-glthread_cond_init_func (gl_cond_t *cond)
-{
-  InitializeCriticalSection (&cond->lock);
-  gl_waitqueue_init (&cond->waiters);
-
-  cond->guard.done = 1;
-  return 0;
-}
-
-int
-glthread_cond_wait_func (gl_cond_t *cond, gl_lock_t *lock)
-{
-  if (!cond->guard.done)
-    {
-      if (InterlockedIncrement (&cond->guard.started) == 0)
-	/* This thread is the first one to need this condition variable.
-	   Initialize it.  */
-	glthread_cond_init (cond);
-      else
-	/* Yield the CPU while waiting for another thread to finish
-	   initializing this condition variable.  */
-	while (!cond->guard.done)
-	  Sleep (0);
-    }
-
-  EnterCriticalSection (&cond->lock);
-  {
-    struct gl_waitqueue_element *elt = gl_waitqueue_add (&cond->waiters);
-    LeaveCriticalSection (&cond->lock);
-    if (elt == NULL)
-      {
-	/* Allocation failure.  Weird.  */
-	return EAGAIN;
-      }
-    else
-      {
-	HANDLE event = elt->event;
-	int err;
-	DWORD result;
-
-	/* Now release the lock and let any other thread take it.  */
-	err = glthread_lock_unlock (lock);
-	if (err != 0)
-	  {
-	    EnterCriticalSection (&cond->lock);
-	    gl_waitqueue_remove (&cond->waiters, elt);
-	    LeaveCriticalSection (&cond->lock);
-	    CloseHandle (event);
-	    free (elt);
-	    return err;
-	  }
-	/* POSIX says:
-	    "If another thread is able to acquire the mutex after the
-	     about-to-block thread has released it, then a subsequent call to
-	     pthread_cond_broadcast() or pthread_cond_signal() in that thread
-	     shall behave as if it were issued after the about-to-block thread
-	     has blocked."
-	   This is fulfilled here, because the thread signalling is done
-	   through SetEvent, not PulseEvent.  */
-	/* Wait until another thread signals this event.  */
-	result = WaitForSingleObject (event, INFINITE);
-	if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
-	  abort ();
-	CloseHandle (event);
-	free (elt);
-	/* The thread which signalled the event already did the bookkeeping:
-	   removed us from the waiters.  */
-	return glthread_lock_lock (lock);
-      }
-  }
-}
-
-int
-glthread_cond_timedwait_func (gl_cond_t *cond, gl_lock_t *lock, struct timespec *abstime)
-{
-  struct timeval currtime;
-
-  gettimeofday (&currtime, NULL);
-  if (currtime.tv_sec > abstime->tv_sec
-      || (currtime.tv_sec == abstime->tv_sec
-	  && currtime.tv_usec * 1000 >= abstime->tv_nsec))
-    return ETIMEDOUT;
-
-  if (!cond->guard.done)
-    {
-      if (InterlockedIncrement (&cond->guard.started) == 0)
-	/* This thread is the first one to need this condition variable.
-	   Initialize it.  */
-	glthread_cond_init (cond);
-      else
-	/* Yield the CPU while waiting for another thread to finish
-	   initializing this condition variable.  */
-	while (!cond->guard.done)
-	  Sleep (0);
-    }
-
-  EnterCriticalSection (&cond->lock);
-  {
-    struct gl_waitqueue_element *elt = gl_waitqueue_add (&cond->waiters);
-    LeaveCriticalSection (&cond->lock);
-    if (elt == NULL)
-      {
-	/* Allocation failure.  Weird.  */
-	return EAGAIN;
-      }
-    else
-      {
-	HANDLE event = elt->event;
-	int err;
-	DWORD timeout;
-	DWORD result;
-
-	/* Now release the lock and let any other thread take it.  */
-	err = glthread_lock_unlock (lock);
-	if (err != 0)
-	  {
-	    EnterCriticalSection (&cond->lock);
-	    gl_waitqueue_remove (&cond->waiters, elt);
-	    LeaveCriticalSection (&cond->lock);
-	    CloseHandle (event);
-	    free (elt);
-	    return err;
-	  }
-	/* POSIX says:
-	    "If another thread is able to acquire the mutex after the
-	     about-to-block thread has released it, then a subsequent call to
-	     pthread_cond_broadcast() or pthread_cond_signal() in that thread
-	     shall behave as if it were issued after the about-to-block thread
-	     has blocked."
-	   This is fulfilled here, because the thread signalling is done
-	   through SetEvent, not PulseEvent.  */
-	/* Wait until another thread signals this event or until the abstime
-	   passes.  */
-	gettimeofday (&currtime, NULL);
-	if (currtime.tv_sec > abstime->tv_sec)
-	  timeout = 0;
-	else
-	  {
-	    unsigned long seconds = abstime->tv_sec - currtime.tv_sec;
-	    timeout = seconds * 1000;
-	    if (timeout / 1000 != seconds) /* overflow? */
-	      timeout = INFINITE;
-	    else
-	      {
-		long milliseconds =
-		  abstime->tv_nsec / 1000000 - currtime.tv_usec / 1000;
-		if (milliseconds >= 0)
-		  {
-		    timeout += milliseconds;
-		    if (timeout < milliseconds) /* overflow? */
-		      timeout = INFINITE;
-		  }
-		else
-		  {
-		    if (timeout >= - milliseconds)
-		      timeout -= (- milliseconds);
-		    else
-		      timeout = 0;
-		  }
-	      }
-	  }
-	result = WaitForSingleObject (event, timeout);
-	if (result == WAIT_FAILED)
-	  abort ();
-	if (result == WAIT_TIMEOUT)
-	  {
-	    EnterCriticalSection (&cond->lock);
-	    if (gl_waitqueue_remove (&cond->waiters, elt))
-	      {
-		/* The event was not signaled between the WaitForSingleObject
-		   call and the EnterCriticalSection call.  */
-		if (!(WaitForSingleObject (event, 0) == WAIT_TIMEOUT))
-		  abort ();
-	      }
-	    else
-	      {
-		/* The event was signaled between the WaitForSingleObject
-		   call and the EnterCriticalSection call.  */
-		if (!(WaitForSingleObject (event, 0) == WAIT_OBJECT_0))
-		  abort ();
-		/* Produce the right return value.  */
-		result = WAIT_OBJECT_0;
-	      }
-	    LeaveCriticalSection (&cond->lock);
-	  }
-	else
-	  {
-	    /* The thread which signalled the event already did the
-	       bookkeeping: removed us from the waiters.  */
-	  }
-	CloseHandle (event);
-	free (elt);
-	/* Take the lock again.  It does not matter whether this is done
-	   before or after the bookkeeping for WAIT_TIMEOUT.  */
-	err = glthread_lock_lock (lock);
-	return (err ? err :
-		result == WAIT_OBJECT_0 ? 0 :
-		result == WAIT_TIMEOUT ? ETIMEDOUT :
-		/* WAIT_FAILED shouldn't happen */ EAGAIN);
-      }
-  }
-}
-
-int
-glthread_cond_signal_func (gl_cond_t *cond)
-{
-  if (!cond->guard.done)
-    return EINVAL;
-
-  EnterCriticalSection (&cond->lock);
-  /* POSIX says:
-      "The pthread_cond_broadcast() and pthread_cond_signal() functions shall
-       have no effect if there are no threads currently blocked on cond."  */
-  if (cond->waiters.wq_list.wql_next != &cond->waiters.wq_list)
-    gl_waitqueue_notify_first (&cond->waiters);
-  LeaveCriticalSection (&cond->lock);
-
-  return 0;
-}
-
-int
-glthread_cond_broadcast_func (gl_cond_t *cond)
-{
-  if (!cond->guard.done)
-    return EINVAL;
-
-  EnterCriticalSection (&cond->lock);
-  /* POSIX says:
-      "The pthread_cond_broadcast() and pthread_cond_signal() functions shall
-       have no effect if there are no threads currently blocked on cond."
-     gl_waitqueue_notify_all is a nop in this case.  */
-  gl_waitqueue_notify_all (&cond->waiters);
-  LeaveCriticalSection (&cond->lock);
-
-  return 0;
-}
-
-int
-glthread_cond_destroy_func (gl_cond_t *cond)
-{
-  if (!cond->guard.done)
-    return EINVAL;
-  if (cond->waiters.wq_list.wql_next != &cond->waiters.wq_list)
-    return EBUSY;
-  DeleteCriticalSection (&cond->lock);
-  cond->guard.done = 0;
-  return 0;
-}
-
-#endif
-
-/* ========================================================================= */
diff --git a/lib/glthread/cond.h b/lib/glthread/cond.h
deleted file mode 100644
index f5462db..0000000
--- a/lib/glthread/cond.h
+++ /dev/null
@@ -1,408 +0,0 @@
-/* Condition variables for multithreading.
-   Copyright (C) 2005-2008 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Yoann Vandoorselaere <yoann@prelude-ids.org>, 2008.
-   Based on Bruno Haible <bruno@clisp.org> lock.h */
-
-/*
-   Condition variables can be used for waiting until a condition
-   becomes true. In this respect, they are similar to wait queues. But
-   contrary to wait queues, condition variables have different
-   semantics that allows events to be lost when there is no thread
-   waiting for them.
-
-   Condition variable:
-     Type:                gl_cond_t
-     Declaration:         gl_cond_define(extern, name)
-     Initializer:         gl_cond_define_initialized(, name)
-     Initialization:      gl_cond_init (name);
-     Waiting:             gl_cond_wait (name, lock);
-     Timed wait:          bool timedout = gl_cond_timedwait (name, lock, abstime);
-                          where lock is a gl_lock_t variable (cf. <glthread/lock.h>)
-     Signaling:           gl_cond_signal (name);
-     Broadcasting:        gl_cond_broadcast (name);
-     De-initialization:   gl_cond_destroy (name);
-   Equivalent functions with control of error handling:
-     Initialization:      err = glthread_cond_init (&name);
-     Waiting:             err = glthread_cond_wait (&name);
-     Timed wait:          err = glthread_cond_timedwait (&name, &lock, abstime);
-     Signaling:           err = glthread_cond_signal (&name);
-     Broadcasting:        err = glthread_cond_broadcast (&name);
-     De-initialization:   err = glthread_cond_destroy (&name);
-*/
-
-
-#ifndef _GLTHREAD_COND_H
-#define _GLTHREAD_COND_H
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <time.h>
-
-#include "glthread/lock.h"
-
-/* ========================================================================= */
-
-#if USE_POSIX_THREADS
-
-/* Use the POSIX threads library.  */
-
-# include <pthread.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if PTHREAD_IN_USE_DETECTION_HARD
-
-/* The pthread_in_use() detection needs to be done at runtime.  */
-#  define pthread_in_use() \
-     glthread_in_use ()
-extern int glthread_in_use (void);
-
-# endif
-
-# if USE_POSIX_THREADS_WEAK
-
-/* Use weak references to the POSIX threads library.  */
-
-/* Weak references avoid dragging in external libraries if the other parts
-   of the program don't use them.  Here we use them, because we don't want
-   every program that uses libintl to depend on libpthread.  This assumes
-   that libpthread would not be loaded after libintl; i.e. if libintl is
-   loaded first, by an executable that does not depend on libpthread, and
-   then a module is dynamically loaded that depends on libpthread, libintl
-   will not be multithread-safe.  */
-
-/* The way to test at runtime whether libpthread is present is to test
-   whether a function pointer's value, such as &pthread_mutex_init, is
-   non-NULL.  However, some versions of GCC have a bug through which, in
-   PIC mode, &foo != NULL always evaluates to true if there is a direct
-   call to foo(...) in the same function.  To avoid this, we test the
-   address of a function in libpthread that we don't use.  */
-
-#  pragma weak pthread_cond_init
-#  pragma weak pthread_cond_wait
-#  pragma weak pthread_cond_timedwait
-#  pragma weak pthread_cond_signal
-#  pragma weak pthread_cond_broadcast
-#  pragma weak pthread_cond_destroy
-#  ifndef pthread_self
-#   pragma weak pthread_self
-#  endif
-
-#  if !PTHREAD_IN_USE_DETECTION_HARD
-#   pragma weak pthread_cancel
-#   define pthread_in_use() (pthread_cancel != NULL)
-#  endif
-
-# else
-
-#  if !PTHREAD_IN_USE_DETECTION_HARD
-#   define pthread_in_use() 1
-#  endif
-
-# endif
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-typedef pthread_cond_t gl_cond_t;
-# define gl_cond_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME;
-# define gl_cond_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME = gl_cond_initializer;
-# define gl_cond_initializer \
-    PTHREAD_COND_INITIALIZER
-# define glthread_cond_init(COND) \
-    (pthread_in_use () ? pthread_cond_init (COND, NULL) : 0)
-# define glthread_cond_wait(COND, LOCK) \
-    (pthread_in_use () ? pthread_cond_wait (COND, LOCK) : 0)
-# define glthread_cond_timedwait(COND, LOCK, ABSTIME) \
-    (pthread_in_use () ? pthread_cond_timedwait (COND, LOCK, ABSTIME) : 0)
-# define glthread_cond_signal(COND) \
-    (pthread_in_use () ? pthread_cond_signal (COND) : 0)
-# define glthread_cond_broadcast(COND) \
-    (pthread_in_use () ? pthread_cond_broadcast (COND) : 0)
-# define glthread_cond_destroy(COND) \
-    (pthread_in_use () ? pthread_cond_destroy (COND) : 0)
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_PTH_THREADS
-
-/* Use the GNU Pth threads library.  */
-
-# include <pth.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_PTH_THREADS_WEAK
-
-/* Use weak references to the GNU Pth threads library.  */
-
-#  pragma weak pth_cond_init
-#  pragma weak pth_cond_await
-#  pragma weak pth_cond_notify
-#  pragma weak pth_event
-#  pragma weak pth_timeout
-
-#  pragma weak pth_cancel
-#  define pth_in_use() (pth_cancel != NULL)
-
-# else
-
-#  define pth_in_use() 1
-
-# endif
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-typedef pth_cond_t gl_cond_t;
-# define gl_cond_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME;
-# define gl_cond_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME = gl_cond_initializer;
-# define gl_cond_initializer \
-    PTH_COND_INIT
-# define glthread_cond_init(COND) \
-    (pth_in_use () && !pth_cond_init (COND) ? errno : 0)
-# define glthread_cond_wait(COND, LOCK) \
-    (pth_in_use () && !pth_cond_await (COND, LOCK, NULL) ? errno : 0)
-# define glthread_cond_timedwait(COND, LOCK, ABSTIME) \
-    (pth_in_use () ? glthread_cond_timedwait_multithreaded (COND, LOCK, ABSTIME) : 0)
-# define glthread_cond_signal(COND) \
-    (pth_in_use () && !pth_cond_notify (COND, FALSE) ? errno : 0)
-# define glthread_cond_broadcast(COND) \
-    (pth_in_use () && !pth_cond_notify (COND, TRUE) ? errno : 0)
-# define glthread_cond_destroy(COND) 0
-extern int glthread_cond_timedwait_multithreaded (gl_cond_t *cond, gl_lock_t *lock, struct timespec *abstime);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_SOLARIS_THREADS
-
-/* Use the old Solaris threads library.  */
-
-# include <thread.h>
-# include <synch.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_SOLARIS_THREADS_WEAK
-
-/* Use weak references to the old Solaris threads library.  */
-
-#  pragma weak cond_init
-#  pragma weak cond_wait
-#  pragma weak cond_timedwait
-#  pragma weak cond_signal
-#  pragma weak cond_broadcast
-#  pragma weak cond_destroy
-#  pragma weak thr_suspend
-#  define thread_in_use() (thr_suspend != NULL)
-
-# else
-
-#  define thread_in_use() 1
-
-# endif
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-typedef cond_t gl_cond_t;
-# define gl_cond_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME;
-# define gl_cond_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME = gl_cond_initializer;
-# define gl_cond_initializer \
-    DEFAULTCV
-# define glthread_cond_init(COND) \
-    (pthread_in_use () ? cond_init (COND, USYNC_THREAD, NULL) : 0)
-# define glthread_cond_wait(COND, LOCK) \
-    (pthread_in_use () ? cond_wait (COND, LOCK) : 0)
-# define glthread_cond_timedwait(COND, LOCK, ABSTIME) \
-    (pthread_in_use () ? glthread_cond_timedwait_multithreaded (COND, LOCK, ABSTIME) : 0)
-# define glthread_cond_signal(COND) \
-    (pthread_in_use () ? cond_signal (COND) : 0)
-# define glthread_cond_broadcast(COND) \
-    (pthread_in_use () ? cond_broadcast (COND) : 0)
-# define glthread_cond_destroy(COND) \
-    (pthread_in_use () ? cond_destroy (COND) : 0)
-extern int glthread_cond_timedwait_multithreaded (gl_cond_t *cond, gl_lock_t *lock, struct timespec *abstime);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_WIN32_THREADS
-
-# include <windows.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-/* -------------------------- gl_cond_t datatype -------------------------- */
-
-struct gl_waitqueue_link
-{
-  struct gl_waitqueue_link *wql_next;
-  struct gl_waitqueue_link *wql_prev;
-};
-typedef struct
-        {
-          struct gl_waitqueue_link wq_list; /* circular list of waiting threads */
-        }
-        gl_linked_waitqueue_t;
-typedef struct
-        {
-          gl_spinlock_t guard; /* protects the initialization */
-          CRITICAL_SECTION lock; /* protects the remaining fields */
-          gl_linked_waitqueue_t waiters; /* waiting threads */
-        }
-        gl_cond_t;
-# define gl_cond_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME;
-# define gl_cond_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_cond_t NAME = gl_cond_initializer;
-# define gl_cond_initializer \
-    { { 0, -1 } }
-# define glthread_cond_init(COND) \
-    glthread_cond_init_func (COND)
-# define glthread_cond_wait(COND, LOCK) \
-    glthread_cond_wait_func (COND, LOCK)
-# define glthread_cond_timedwait(COND, LOCK, ABSTIME) \
-    glthread_cond_timedwait_func (COND, LOCK, ABSTIME)
-# define glthread_cond_signal(COND) \
-    glthread_cond_signal_func (COND)
-# define glthread_cond_broadcast(COND) \
-    glthread_cond_broadcast_func (COND)
-# define glthread_cond_destroy(COND) \
-    glthread_cond_destroy_func (COND)
-extern int glthread_cond_init_func (gl_cond_t *cond);
-extern int glthread_cond_wait_func (gl_cond_t *cond, gl_lock_t *lock);
-extern int glthread_cond_timedwait_func (gl_cond_t *cond, gl_lock_t *lock, struct timespec *abstime);
-extern int glthread_cond_signal_func (gl_cond_t *cond);
-extern int glthread_cond_broadcast_func (gl_cond_t *cond);
-extern int glthread_cond_destroy_func (gl_cond_t *cond);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WIN32_THREADS)
-
-/* Provide dummy implementation if threads are not supported.  */
-
-typedef int gl_cond_t;
-# define gl_cond_define(STORAGECLASS, NAME)
-# define gl_cond_define_initialized(STORAGECLASS, NAME)
-# define glthread_cond_init(COND) 0
-# define glthread_cond_wait(COND, LOCK) 0
-# define glthread_cond_timedwait(COND, LOCK, ABSTIME) 0
-# define glthread_cond_signal(COND) 0
-# define glthread_cond_broadcast(COND) 0
-# define glthread_cond_destroy(COND) 0
-
-#endif
-
-/* ========================================================================= */
-
-/* Macros with built-in error handling.  */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define gl_cond_init(COND)             \
-   do                                  \
-     {                                 \
-       if (glthread_cond_init (&COND)) \
-         abort ();                     \
-     }                                 \
-   while (0)
-#define gl_cond_wait(COND, LOCK)              \
-   do                                         \
-     {                                        \
-       if (glthread_cond_wait (&COND, &LOCK)) \
-         abort ();                            \
-     }                                        \
-   while (0)
-#define gl_cond_timedwait(COND, LOCK, ABSTIME) \
-  gl_cond_timedwait_func (&COND, &LOCK, ABSTIME)
-static inline bool
-gl_cond_timedwait_func (gl_cond_t *cond, gl_lock_t *lock, struct timespec *abstime)
-{
-  int err = glthread_cond_timedwait (cond, lock, abstime);
-  if (err == ETIMEDOUT)
-    return true;
-  if (err != 0)
-    abort ();
-  return false;
-}
-#define gl_cond_signal(COND)             \
-   do                                    \
-     {                                   \
-       if (glthread_cond_signal (&COND)) \
-         abort ();                       \
-     }                                   \
-   while (0)
-#define gl_cond_broadcast(COND)             \
-   do                                       \
-     {                                      \
-       if (glthread_cond_broadcast (&COND)) \
-         abort ();                          \
-     }                                      \
-   while (0)
-#define gl_cond_destroy(COND)             \
-   do                                     \
-     {                                    \
-       if (glthread_cond_destroy (&COND)) \
-         abort ();                        \
-     }                                    \
-   while (0)
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _GLTHREAD_COND_H */
diff --git a/lib/glthread/lock.c b/lib/glthread/lock.c
deleted file mode 100644
index 7db6426..0000000
--- a/lib/glthread/lock.c
+++ /dev/null
@@ -1,1058 +0,0 @@
-/* Locking in multithreaded situations.
-   Copyright (C) 2005-2008 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2005.
-   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
-   gthr-win32.h.  */
-
-#include <config.h>
-
-#include "glthread/lock.h"
-
-/* ========================================================================= */
-
-#if USE_POSIX_THREADS
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-# if HAVE_PTHREAD_RWLOCK
-
-#  if !defined PTHREAD_RWLOCK_INITIALIZER
-
-int
-glthread_rwlock_init_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  err = pthread_rwlock_init (&lock->rwlock, NULL);
-  if (err != 0)
-    return err;
-  lock->initialized = 1;
-  return 0;
-}
-
-int
-glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock)
-{
-  if (!lock->initialized)
-    {
-      int err;
-
-      err = pthread_mutex_lock (&lock->guard);
-      if (err != 0)
-	return err;
-      if (!lock->initialized)
-	{
-	  err = glthread_rwlock_init_multithreaded (lock);
-	  if (err != 0)
-	    {
-	      pthread_mutex_unlock (&lock->guard);
-	      return err;
-	    }
-	}
-      err = pthread_mutex_unlock (&lock->guard);
-      if (err != 0)
-	return err;
-    }
-  return pthread_rwlock_rdlock (&lock->rwlock);
-}
-
-int
-glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock)
-{
-  if (!lock->initialized)
-    {
-      int err;
-
-      err = pthread_mutex_lock (&lock->guard);
-      if (err != 0)
-	return err;
-      if (!lock->initialized)
-	{
-	  err = glthread_rwlock_init_multithreaded (lock);
-	  if (err != 0)
-	    {
-	      pthread_mutex_unlock (&lock->guard);
-	      return err;
-	    }
-	}
-      err = pthread_mutex_unlock (&lock->guard);
-      if (err != 0)
-	return err;
-    }
-  return pthread_rwlock_wrlock (&lock->rwlock);
-}
-
-int
-glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock)
-{
-  if (!lock->initialized)
-    return EINVAL;
-  return pthread_rwlock_unlock (&lock->rwlock);
-}
-
-int
-glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  if (!lock->initialized)
-    return EINVAL;
-  err = pthread_rwlock_destroy (&lock->rwlock);
-  if (err != 0)
-    return err;
-  lock->initialized = 0;
-  return 0;
-}
-
-#  endif
-
-# else
-
-int
-glthread_rwlock_init_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  err = pthread_mutex_init (&lock->lock, NULL);
-  if (err != 0)
-    return err;
-  err = pthread_cond_init (&lock->waiting_readers, NULL);
-  if (err != 0)
-    return err;
-  err = pthread_cond_init (&lock->waiting_writers, NULL);
-  if (err != 0)
-    return err;
-  lock->waiting_writers_count = 0;
-  lock->runcount = 0;
-  return 0;
-}
-
-int
-glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  err = pthread_mutex_lock (&lock->lock);
-  if (err != 0)
-    return err;
-  /* Test whether only readers are currently running, and whether the runcount
-     field will not overflow.  */
-  /* POSIX says: "It is implementation-defined whether the calling thread
-     acquires the lock when a writer does not hold the lock and there are
-     writers blocked on the lock."  Let's say, no: give the writers a higher
-     priority.  */
-  while (!(lock->runcount + 1 > 0 && lock->waiting_writers_count == 0))
-    {
-      /* This thread has to wait for a while.  Enqueue it among the
-	 waiting_readers.  */
-      err = pthread_cond_wait (&lock->waiting_readers, &lock->lock);
-      if (err != 0)
-	{
-	  pthread_mutex_unlock (&lock->lock);
-	  return err;
-	}
-    }
-  lock->runcount++;
-  return pthread_mutex_unlock (&lock->lock);
-}
-
-int
-glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  err = pthread_mutex_lock (&lock->lock);
-  if (err != 0)
-    return err;
-  /* Test whether no readers or writers are currently running.  */
-  while (!(lock->runcount == 0))
-    {
-      /* This thread has to wait for a while.  Enqueue it among the
-	 waiting_writers.  */
-      lock->waiting_writers_count++;
-      err = pthread_cond_wait (&lock->waiting_writers, &lock->lock);
-      if (err != 0)
-	{
-	  lock->waiting_writers_count--;
-	  pthread_mutex_unlock (&lock->lock);
-	  return err;
-	}
-      lock->waiting_writers_count--;
-    }
-  lock->runcount--; /* runcount becomes -1 */
-  return pthread_mutex_unlock (&lock->lock);
-}
-
-int
-glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  err = pthread_mutex_lock (&lock->lock);
-  if (err != 0)
-    return err;
-  if (lock->runcount < 0)
-    {
-      /* Drop a writer lock.  */
-      if (!(lock->runcount == -1))
-	{
-	  pthread_mutex_unlock (&lock->lock);
-	  return EINVAL;
-	}
-      lock->runcount = 0;
-    }
-  else
-    {
-      /* Drop a reader lock.  */
-      if (!(lock->runcount > 0))
-	{
-	  pthread_mutex_unlock (&lock->lock);
-	  return EINVAL;
-	}
-      lock->runcount--;
-    }
-  if (lock->runcount == 0)
-    {
-      /* POSIX recommends that "write locks shall take precedence over read
-	 locks", to avoid "writer starvation".  */
-      if (lock->waiting_writers_count > 0)
-	{
-	  /* Wake up one of the waiting writers.  */
-	  err = pthread_cond_signal (&lock->waiting_writers);
-	  if (err != 0)
-	    {
-	      pthread_mutex_unlock (&lock->lock);
-	      return err;
-	    }
-	}
-      else
-	{
-	  /* Wake up all waiting readers.  */
-	  err = pthread_cond_broadcast (&lock->waiting_readers);
-	  if (err != 0)
-	    {
-	      pthread_mutex_unlock (&lock->lock);
-	      return err;
-	    }
-	}
-    }
-  return pthread_mutex_unlock (&lock->lock);
-}
-
-int
-glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock)
-{
-  int err;
-
-  err = pthread_mutex_destroy (&lock->lock);
-  if (err != 0)
-    return err;
-  err = pthread_cond_destroy (&lock->waiting_readers);
-  if (err != 0)
-    return err;
-  err = pthread_cond_destroy (&lock->waiting_writers);
-  if (err != 0)
-    return err;
-  return 0;
-}
-
-# endif
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-# if HAVE_PTHREAD_MUTEX_RECURSIVE
-
-#  if defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER || defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-
-int
-glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
-{
-  pthread_mutexattr_t attributes;
-  int err;
-
-  err = pthread_mutexattr_init (&attributes);
-  if (err != 0)
-    return err;
-  err = pthread_mutexattr_settype (&attributes, PTHREAD_MUTEX_RECURSIVE);
-  if (err != 0)
-    {
-      pthread_mutexattr_destroy (&attributes);
-      return err;
-    }
-  err = pthread_mutex_init (lock, &attributes);
-  if (err != 0)
-    {
-      pthread_mutexattr_destroy (&attributes);
-      return err;
-    }
-  err = pthread_mutexattr_destroy (&attributes);
-  if (err != 0)
-    return err;
-  return 0;
-}
-
-#  else
-
-int
-glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
-{
-  pthread_mutexattr_t attributes;
-  int err;
-
-  err = pthread_mutexattr_init (&attributes);
-  if (err != 0)
-    return err;
-  err = pthread_mutexattr_settype (&attributes, PTHREAD_MUTEX_RECURSIVE);
-  if (err != 0)
-    {
-      pthread_mutexattr_destroy (&attributes);
-      return err;
-    }
-  err = pthread_mutex_init (&lock->recmutex, &attributes);
-  if (err != 0)
-    {
-      pthread_mutexattr_destroy (&attributes);
-      return err;
-    }
-  err = pthread_mutexattr_destroy (&attributes);
-  if (err != 0)
-    return err;
-  lock->initialized = 1;
-  return 0;
-}
-
-int
-glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock)
-{
-  if (!lock->initialized)
-    {
-      int err;
-
-      err = pthread_mutex_lock (&lock->guard);
-      if (err != 0)
-	return err;
-      if (!lock->initialized)
-	{
-	  err = glthread_recursive_lock_init_multithreaded (lock);
-	  if (err != 0)
-	    {
-	      pthread_mutex_unlock (&lock->guard);
-	      return err;
-	    }
-	}
-      err = pthread_mutex_unlock (&lock->guard);
-      if (err != 0)
-	return err;
-    }
-  return pthread_mutex_lock (&lock->recmutex);
-}
-
-int
-glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock)
-{
-  if (!lock->initialized)
-    return EINVAL;
-  return pthread_mutex_unlock (&lock->recmutex);
-}
-
-int
-glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock)
-{
-  int err;
-
-  if (!lock->initialized)
-    return EINVAL;
-  err = pthread_mutex_destroy (&lock->recmutex);
-  if (err != 0)
-    return err;
-  lock->initialized = 0;
-  return 0;
-}
-
-#  endif
-
-# else
-
-int
-glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
-{
-  int err;
-
-  err = pthread_mutex_init (&lock->mutex, NULL);
-  if (err != 0)
-    return err;
-  lock->owner = (pthread_t) 0;
-  lock->depth = 0;
-  return 0;
-}
-
-int
-glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock)
-{
-  pthread_t self = pthread_self ();
-  if (lock->owner != self)
-    {
-      int err;
-
-      err = pthread_mutex_lock (&lock->mutex);
-      if (err != 0)
-	return err;
-      lock->owner = self;
-    }
-  if (++(lock->depth) == 0) /* wraparound? */
-    {
-      lock->depth--;
-      return EAGAIN;
-    }
-  return 0;
-}
-
-int
-glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock)
-{
-  if (lock->owner != pthread_self ())
-    return EPERM;
-  if (lock->depth == 0)
-    return EINVAL;
-  if (--(lock->depth) == 0)
-    {
-      lock->owner = (pthread_t) 0;
-      return pthread_mutex_unlock (&lock->mutex);
-    }
-  else
-    return 0;
-}
-
-int
-glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock)
-{
-  if (lock->owner != (pthread_t) 0)
-    return EBUSY;
-  return pthread_mutex_destroy (&lock->mutex);
-}
-
-# endif
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-static const pthread_once_t fresh_once = PTHREAD_ONCE_INIT;
-
-int
-glthread_once_singlethreaded (pthread_once_t *once_control)
-{
-  /* We don't know whether pthread_once_t is an integer type, a floating-point
-     type, a pointer type, or a structure type.  */
-  char *firstbyte = (char *)once_control;
-  if (*firstbyte == *(const char *)&fresh_once)
-    {
-      /* First time use of once_control.  Invert the first byte.  */
-      *firstbyte = ~ *(const char *)&fresh_once;
-      return 1;
-    }
-  else
-    return 0;
-}
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_PTH_THREADS
-
-/* Use the GNU Pth threads library.  */
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-static void
-glthread_once_call (void *arg)
-{
-  void (**gl_once_temp_addr) (void) = (void (**) (void)) arg;
-  void (*initfunction) (void) = *gl_once_temp_addr;
-  initfunction ();
-}
-
-int
-glthread_once_multithreaded (pth_once_t *once_control, void (*initfunction) (void))
-{
-  void (*temp) (void) = initfunction;
-  return (!pth_once (once_control, glthread_once_call, &temp) ? errno : 0);
-}
-
-int
-glthread_once_singlethreaded (pth_once_t *once_control)
-{
-  /* We know that pth_once_t is an integer type.  */
-  if (*once_control == PTH_ONCE_INIT)
-    {
-      /* First time use of once_control.  Invert the marker.  */
-      *once_control = ~ PTH_ONCE_INIT;
-      return 1;
-    }
-  else
-    return 0;
-}
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_SOLARIS_THREADS
-
-/* Use the old Solaris threads library.  */
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-int
-glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
-{
-  int err;
-
-  err = mutex_init (&lock->mutex, USYNC_THREAD, NULL);
-  if (err != 0)
-    return err;
-  lock->owner = (thread_t) 0;
-  lock->depth = 0;
-  return 0;
-}
-
-int
-glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock)
-{
-  thread_t self = thr_self ();
-  if (lock->owner != self)
-    {
-      int err;
-
-      err = mutex_lock (&lock->mutex);
-      if (err != 0)
-	return err;
-      lock->owner = self;
-    }
-  if (++(lock->depth) == 0) /* wraparound? */
-    {
-      lock->depth--;
-      return EAGAIN;
-    }
-  return 0;
-}
-
-int
-glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock)
-{
-  if (lock->owner != thr_self ())
-    return EPERM;
-  if (lock->depth == 0)
-    return EINVAL;
-  if (--(lock->depth) == 0)
-    {
-      lock->owner = (thread_t) 0;
-      return mutex_unlock (&lock->mutex);
-    }
-  else
-    return 0;
-}
-
-int
-glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock)
-{
-  if (lock->owner != (thread_t) 0)
-    return EBUSY;
-  return mutex_destroy (&lock->mutex);
-}
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-int
-glthread_once_multithreaded (gl_once_t *once_control, void (*initfunction) (void))
-{
-  if (!once_control->inited)
-    {
-      int err;
-
-      /* Use the mutex to guarantee that if another thread is already calling
-	 the initfunction, this thread waits until it's finished.  */
-      err = mutex_lock (&once_control->mutex);
-      if (err != 0)
-	return err;
-      if (!once_control->inited)
-	{
-	  once_control->inited = 1;
-	  initfunction ();
-	}
-      return mutex_unlock (&once_control->mutex);
-    }
-  else
-    return 0;
-}
-
-int
-glthread_once_singlethreaded (gl_once_t *once_control)
-{
-  /* We know that gl_once_t contains an integer type.  */
-  if (!once_control->inited)
-    {
-      /* First time use of once_control.  Invert the marker.  */
-      once_control->inited = ~ 0;
-      return 1;
-    }
-  else
-    return 0;
-}
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_WIN32_THREADS
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-void
-glthread_lock_init_func (gl_lock_t *lock)
-{
-  InitializeCriticalSection (&lock->lock);
-  lock->guard.done = 1;
-}
-
-int
-glthread_lock_lock_func (gl_lock_t *lock)
-{
-  if (!lock->guard.done)
-    {
-      if (InterlockedIncrement (&lock->guard.started) == 0)
-	/* This thread is the first one to need this lock.  Initialize it.  */
-	glthread_lock_init (lock);
-      else
-	/* Yield the CPU while waiting for another thread to finish
-	   initializing this lock.  */
-	while (!lock->guard.done)
-	  Sleep (0);
-    }
-  EnterCriticalSection (&lock->lock);
-  return 0;
-}
-
-int
-glthread_lock_unlock_func (gl_lock_t *lock)
-{
-  if (!lock->guard.done)
-    return EINVAL;
-  LeaveCriticalSection (&lock->lock);
-  return 0;
-}
-
-int
-glthread_lock_destroy_func (gl_lock_t *lock)
-{
-  if (!lock->guard.done)
-    return EINVAL;
-  DeleteCriticalSection (&lock->lock);
-  lock->guard.done = 0;
-  return 0;
-}
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-/* In this file, the waitqueues are implemented as circular arrays.  */
-#define gl_waitqueue_t gl_carray_waitqueue_t
-
-static inline void
-gl_waitqueue_init (gl_waitqueue_t *wq)
-{
-  wq->array = NULL;
-  wq->count = 0;
-  wq->alloc = 0;
-  wq->offset = 0;
-}
-
-/* Enqueues the current thread, represented by an event, in a wait queue.
-   Returns INVALID_HANDLE_VALUE if an allocation failure occurs.  */
-static HANDLE
-gl_waitqueue_add (gl_waitqueue_t *wq)
-{
-  HANDLE event;
-  unsigned int index;
-
-  if (wq->count == wq->alloc)
-    {
-      unsigned int new_alloc = 2 * wq->alloc + 1;
-      HANDLE *new_array =
-	(HANDLE *) realloc (wq->array, new_alloc * sizeof (HANDLE));
-      if (new_array == NULL)
-	/* No more memory.  */
-	return INVALID_HANDLE_VALUE;
-      /* Now is a good opportunity to rotate the array so that its contents
-	 starts at offset 0.  */
-      if (wq->offset > 0)
-	{
-	  unsigned int old_count = wq->count;
-	  unsigned int old_alloc = wq->alloc;
-	  unsigned int old_offset = wq->offset;
-	  unsigned int i;
-	  if (old_offset + old_count > old_alloc)
-	    {
-	      unsigned int limit = old_offset + old_count - old_alloc;
-	      for (i = 0; i < limit; i++)
-		new_array[old_alloc + i] = new_array[i];
-	    }
-	  for (i = 0; i < old_count; i++)
-	    new_array[i] = new_array[old_offset + i];
-	  wq->offset = 0;
-	}
-      wq->array = new_array;
-      wq->alloc = new_alloc;
-    }
-  /* Whether the created event is a manual-reset one or an auto-reset one,
-     does not matter, since we will wait on it only once.  */
-  event = CreateEvent (NULL, TRUE, FALSE, NULL);
-  if (event == INVALID_HANDLE_VALUE)
-    /* No way to allocate an event.  */
-    return INVALID_HANDLE_VALUE;
-  index = wq->offset + wq->count;
-  if (index >= wq->alloc)
-    index -= wq->alloc;
-  wq->array[index] = event;
-  wq->count++;
-  return event;
-}
-
-/* Notifies the first thread from a wait queue and dequeues it.  */
-static inline void
-gl_waitqueue_notify_first (gl_waitqueue_t *wq)
-{
-  SetEvent (wq->array[wq->offset + 0]);
-  wq->offset++;
-  wq->count--;
-  if (wq->count == 0 || wq->offset == wq->alloc)
-    wq->offset = 0;
-}
-
-/* Notifies all threads from a wait queue and dequeues them all.  */
-static inline void
-gl_waitqueue_notify_all (gl_waitqueue_t *wq)
-{
-  unsigned int i;
-
-  for (i = 0; i < wq->count; i++)
-    {
-      unsigned int index = wq->offset + i;
-      if (index >= wq->alloc)
-	index -= wq->alloc;
-      SetEvent (wq->array[index]);
-    }
-  wq->count = 0;
-  wq->offset = 0;
-}
-
-void
-glthread_rwlock_init_func (gl_rwlock_t *lock)
-{
-  InitializeCriticalSection (&lock->lock);
-  gl_waitqueue_init (&lock->waiting_readers);
-  gl_waitqueue_init (&lock->waiting_writers);
-  lock->runcount = 0;
-  lock->guard.done = 1;
-}
-
-int
-glthread_rwlock_rdlock_func (gl_rwlock_t *lock)
-{
-  if (!lock->guard.done)
-    {
-      if (InterlockedIncrement (&lock->guard.started) == 0)
-	/* This thread is the first one to need this lock.  Initialize it.  */
-	glthread_rwlock_init (lock);
-      else
-	/* Yield the CPU while waiting for another thread to finish
-	   initializing this lock.  */
-	while (!lock->guard.done)
-	  Sleep (0);
-    }
-  EnterCriticalSection (&lock->lock);
-  /* Test whether only readers are currently running, and whether the runcount
-     field will not overflow.  */
-  if (!(lock->runcount + 1 > 0))
-    {
-      /* This thread has to wait for a while.  Enqueue it among the
-	 waiting_readers.  */
-      HANDLE event = gl_waitqueue_add (&lock->waiting_readers);
-      if (event != INVALID_HANDLE_VALUE)
-	{
-	  DWORD result;
-	  LeaveCriticalSection (&lock->lock);
-	  /* Wait until another thread signals this event.  */
-	  result = WaitForSingleObject (event, INFINITE);
-	  if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
-	    abort ();
-	  CloseHandle (event);
-	  /* The thread which signalled the event already did the bookkeeping:
-	     removed us from the waiting_readers, incremented lock->runcount.  */
-	  if (!(lock->runcount > 0))
-	    abort ();
-	  return 0;
-	}
-      else
-	{
-	  /* Allocation failure.  Weird.  */
-	  do
-	    {
-	      LeaveCriticalSection (&lock->lock);
-	      Sleep (1);
-	      EnterCriticalSection (&lock->lock);
-	    }
-	  while (!(lock->runcount + 1 > 0));
-	}
-    }
-  lock->runcount++;
-  LeaveCriticalSection (&lock->lock);
-  return 0;
-}
-
-int
-glthread_rwlock_wrlock_func (gl_rwlock_t *lock)
-{
-  if (!lock->guard.done)
-    {
-      if (InterlockedIncrement (&lock->guard.started) == 0)
-	/* This thread is the first one to need this lock.  Initialize it.  */
-	glthread_rwlock_init (lock);
-      else
-	/* Yield the CPU while waiting for another thread to finish
-	   initializing this lock.  */
-	while (!lock->guard.done)
-	  Sleep (0);
-    }
-  EnterCriticalSection (&lock->lock);
-  /* Test whether no readers or writers are currently running.  */
-  if (!(lock->runcount == 0))
-    {
-      /* This thread has to wait for a while.  Enqueue it among the
-	 waiting_writers.  */
-      HANDLE event = gl_waitqueue_add (&lock->waiting_writers);
-      if (event != INVALID_HANDLE_VALUE)
-	{
-	  DWORD result;
-	  LeaveCriticalSection (&lock->lock);
-	  /* Wait until another thread signals this event.  */
-	  result = WaitForSingleObject (event, INFINITE);
-	  if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
-	    abort ();
-	  CloseHandle (event);
-	  /* The thread which signalled the event already did the bookkeeping:
-	     removed us from the waiting_writers, set lock->runcount = -1.  */
-	  if (!(lock->runcount == -1))
-	    abort ();
-	  return 0;
-	}
-      else
-	{
-	  /* Allocation failure.  Weird.  */
-	  do
-	    {
-	      LeaveCriticalSection (&lock->lock);
-	      Sleep (1);
-	      EnterCriticalSection (&lock->lock);
-	    }
-	  while (!(lock->runcount == 0));
-	}
-    }
-  lock->runcount--; /* runcount becomes -1 */
-  LeaveCriticalSection (&lock->lock);
-  return 0;
-}
-
-int
-glthread_rwlock_unlock_func (gl_rwlock_t *lock)
-{
-  if (!lock->guard.done)
-    return EINVAL;
-  EnterCriticalSection (&lock->lock);
-  if (lock->runcount < 0)
-    {
-      /* Drop a writer lock.  */
-      if (!(lock->runcount == -1))
-	abort ();
-      lock->runcount = 0;
-    }
-  else
-    {
-      /* Drop a reader lock.  */
-      if (!(lock->runcount > 0))
-	{
-	  LeaveCriticalSection (&lock->lock);
-	  return EPERM;
-	}
-      lock->runcount--;
-    }
-  if (lock->runcount == 0)
-    {
-      /* POSIX recommends that "write locks shall take precedence over read
-	 locks", to avoid "writer starvation".  */
-      if (lock->waiting_writers.count > 0)
-	{
-	  /* Wake up one of the waiting writers.  */
-	  lock->runcount--;
-	  gl_waitqueue_notify_first (&lock->waiting_writers);
-	}
-      else
-	{
-	  /* Wake up all waiting readers.  */
-	  lock->runcount += lock->waiting_readers.count;
-	  gl_waitqueue_notify_all (&lock->waiting_readers);
-	}
-    }
-  LeaveCriticalSection (&lock->lock);
-  return 0;
-}
-
-int
-glthread_rwlock_destroy_func (gl_rwlock_t *lock)
-{
-  if (!lock->guard.done)
-    return EINVAL;
-  if (lock->runcount != 0)
-    return EBUSY;
-  DeleteCriticalSection (&lock->lock);
-  if (lock->waiting_readers.array != NULL)
-    free (lock->waiting_readers.array);
-  if (lock->waiting_writers.array != NULL)
-    free (lock->waiting_writers.array);
-  lock->guard.done = 0;
-  return 0;
-}
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-void
-glthread_recursive_lock_init_func (gl_recursive_lock_t *lock)
-{
-  lock->owner = 0;
-  lock->depth = 0;
-  InitializeCriticalSection (&lock->lock);
-  lock->guard.done = 1;
-}
-
-int
-glthread_recursive_lock_lock_func (gl_recursive_lock_t *lock)
-{
-  if (!lock->guard.done)
-    {
-      if (InterlockedIncrement (&lock->guard.started) == 0)
-	/* This thread is the first one to need this lock.  Initialize it.  */
-	glthread_recursive_lock_init (lock);
-      else
-	/* Yield the CPU while waiting for another thread to finish
-	   initializing this lock.  */
-	while (!lock->guard.done)
-	  Sleep (0);
-    }
-  {
-    DWORD self = GetCurrentThreadId ();
-    if (lock->owner != self)
-      {
-	EnterCriticalSection (&lock->lock);
-	lock->owner = self;
-      }
-    if (++(lock->depth) == 0) /* wraparound? */
-      {
-	lock->depth--;
-	return EAGAIN;
-      }
-  }
-  return 0;
-}
-
-int
-glthread_recursive_lock_unlock_func (gl_recursive_lock_t *lock)
-{
-  if (lock->owner != GetCurrentThreadId ())
-    return EPERM;
-  if (lock->depth == 0)
-    return EINVAL;
-  if (--(lock->depth) == 0)
-    {
-      lock->owner = 0;
-      LeaveCriticalSection (&lock->lock);
-    }
-  return 0;
-}
-
-int
-glthread_recursive_lock_destroy_func (gl_recursive_lock_t *lock)
-{
-  if (lock->owner != 0)
-    return EBUSY;
-  DeleteCriticalSection (&lock->lock);
-  lock->guard.done = 0;
-  return 0;
-}
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-void
-glthread_once_func (gl_once_t *once_control, void (*initfunction) (void))
-{
-  if (once_control->inited <= 0)
-    {
-      if (InterlockedIncrement (&once_control->started) == 0)
-	{
-	  /* This thread is the first one to come to this once_control.  */
-	  InitializeCriticalSection (&once_control->lock);
-	  EnterCriticalSection (&once_control->lock);
-	  once_control->inited = 0;
-	  initfunction ();
-	  once_control->inited = 1;
-	  LeaveCriticalSection (&once_control->lock);
-	}
-      else
-	{
-	  /* Undo last operation.  */
-	  InterlockedDecrement (&once_control->started);
-	  /* Some other thread has already started the initialization.
-	     Yield the CPU while waiting for the other thread to finish
-	     initializing and taking the lock.  */
-	  while (once_control->inited < 0)
-	    Sleep (0);
-	  if (once_control->inited <= 0)
-	    {
-	      /* Take the lock.  This blocks until the other thread has
-		 finished calling the initfunction.  */
-	      EnterCriticalSection (&once_control->lock);
-	      LeaveCriticalSection (&once_control->lock);
-	      if (!(once_control->inited > 0))
-		abort ();
-	    }
-	}
-    }
-}
-
-#endif
-
-/* ========================================================================= */
diff --git a/lib/glthread/lock.h b/lib/glthread/lock.h
deleted file mode 100644
index 0cfb30e..0000000
--- a/lib/glthread/lock.h
+++ /dev/null
@@ -1,927 +0,0 @@
-/* Locking in multithreaded situations.
-   Copyright (C) 2005-2008 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2005.
-   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
-   gthr-win32.h.  */
-
-/* This file contains locking primitives for use with a given thread library.
-   It does not contain primitives for creating threads or for other
-   synchronization primitives.
-
-   Normal (non-recursive) locks:
-     Type:                gl_lock_t
-     Declaration:         gl_lock_define(extern, name)
-     Initializer:         gl_lock_define_initialized(, name)
-     Initialization:      gl_lock_init (name);
-     Taking the lock:     gl_lock_lock (name);
-     Releasing the lock:  gl_lock_unlock (name);
-     De-initialization:   gl_lock_destroy (name);
-   Equivalent functions with control of error handling:
-     Initialization:      err = glthread_lock_init (&name);
-     Taking the lock:     err = glthread_lock_lock (&name);
-     Releasing the lock:  err = glthread_lock_unlock (&name);
-     De-initialization:   err = glthread_lock_destroy (&name);
-
-   Read-Write (non-recursive) locks:
-     Type:                gl_rwlock_t
-     Declaration:         gl_rwlock_define(extern, name)
-     Initializer:         gl_rwlock_define_initialized(, name)
-     Initialization:      gl_rwlock_init (name);
-     Taking the lock:     gl_rwlock_rdlock (name);
-                          gl_rwlock_wrlock (name);
-     Releasing the lock:  gl_rwlock_unlock (name);
-     De-initialization:   gl_rwlock_destroy (name);
-   Equivalent functions with control of error handling:
-     Initialization:      err = glthread_rwlock_init (&name);
-     Taking the lock:     err = glthread_rwlock_rdlock (&name);
-                          err = glthread_rwlock_wrlock (&name);
-     Releasing the lock:  err = glthread_rwlock_unlock (&name);
-     De-initialization:   err = glthread_rwlock_destroy (&name);
-
-   Recursive locks:
-     Type:                gl_recursive_lock_t
-     Declaration:         gl_recursive_lock_define(extern, name)
-     Initializer:         gl_recursive_lock_define_initialized(, name)
-     Initialization:      gl_recursive_lock_init (name);
-     Taking the lock:     gl_recursive_lock_lock (name);
-     Releasing the lock:  gl_recursive_lock_unlock (name);
-     De-initialization:   gl_recursive_lock_destroy (name);
-   Equivalent functions with control of error handling:
-     Initialization:      err = glthread_recursive_lock_init (&name);
-     Taking the lock:     err = glthread_recursive_lock_lock (&name);
-     Releasing the lock:  err = glthread_recursive_lock_unlock (&name);
-     De-initialization:   err = glthread_recursive_lock_destroy (&name);
-
-  Once-only execution:
-     Type:                gl_once_t
-     Initializer:         gl_once_define(extern, name)
-     Execution:           gl_once (name, initfunction);
-   Equivalent functions with control of error handling:
-     Execution:           err = glthread_once (&name, initfunction);
-*/
-
-
-#ifndef _LOCK_H
-#define _LOCK_H
-
-#include <errno.h>
-#include <stdlib.h>
-
-/* ========================================================================= */
-
-#if USE_POSIX_THREADS
-
-/* Use the POSIX threads library.  */
-
-# include <pthread.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if PTHREAD_IN_USE_DETECTION_HARD
-
-/* The pthread_in_use() detection needs to be done at runtime.  */
-#  define pthread_in_use() \
-     glthread_in_use ()
-extern int glthread_in_use (void);
-
-# endif
-
-# if USE_POSIX_THREADS_WEAK
-
-/* Use weak references to the POSIX threads library.  */
-
-/* Weak references avoid dragging in external libraries if the other parts
-   of the program don't use them.  Here we use them, because we don't want
-   every program that uses libintl to depend on libpthread.  This assumes
-   that libpthread would not be loaded after libintl; i.e. if libintl is
-   loaded first, by an executable that does not depend on libpthread, and
-   then a module is dynamically loaded that depends on libpthread, libintl
-   will not be multithread-safe.  */
-
-/* The way to test at runtime whether libpthread is present is to test
-   whether a function pointer's value, such as &pthread_mutex_init, is
-   non-NULL.  However, some versions of GCC have a bug through which, in
-   PIC mode, &foo != NULL always evaluates to true if there is a direct
-   call to foo(...) in the same function.  To avoid this, we test the
-   address of a function in libpthread that we don't use.  */
-
-#  pragma weak pthread_mutex_init
-#  pragma weak pthread_mutex_lock
-#  pragma weak pthread_mutex_unlock
-#  pragma weak pthread_mutex_destroy
-#  pragma weak pthread_rwlock_init
-#  pragma weak pthread_rwlock_rdlock
-#  pragma weak pthread_rwlock_wrlock
-#  pragma weak pthread_rwlock_unlock
-#  pragma weak pthread_rwlock_destroy
-#  pragma weak pthread_once
-#  pragma weak pthread_cond_init
-#  pragma weak pthread_cond_wait
-#  pragma weak pthread_cond_signal
-#  pragma weak pthread_cond_broadcast
-#  pragma weak pthread_cond_destroy
-#  pragma weak pthread_mutexattr_init
-#  pragma weak pthread_mutexattr_settype
-#  pragma weak pthread_mutexattr_destroy
-#  ifndef pthread_self
-#   pragma weak pthread_self
-#  endif
-
-#  if !PTHREAD_IN_USE_DETECTION_HARD
-#   pragma weak pthread_cancel
-#   define pthread_in_use() (pthread_cancel != NULL)
-#  endif
-
-# else
-
-#  if !PTHREAD_IN_USE_DETECTION_HARD
-#   define pthread_in_use() 1
-#  endif
-
-# endif
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef pthread_mutex_t gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME) \
-    STORAGECLASS pthread_mutex_t NAME;
-# define gl_lock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS pthread_mutex_t NAME = gl_lock_initializer;
-# define gl_lock_initializer \
-    PTHREAD_MUTEX_INITIALIZER
-# define glthread_lock_init(LOCK) \
-    (pthread_in_use () ? pthread_mutex_init (LOCK, NULL) : 0)
-# define glthread_lock_lock(LOCK) \
-    (pthread_in_use () ? pthread_mutex_lock (LOCK) : 0)
-# define glthread_lock_unlock(LOCK) \
-    (pthread_in_use () ? pthread_mutex_unlock (LOCK) : 0)
-# define glthread_lock_destroy(LOCK) \
-    (pthread_in_use () ? pthread_mutex_destroy (LOCK) : 0)
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-# if HAVE_PTHREAD_RWLOCK
-
-#  ifdef PTHREAD_RWLOCK_INITIALIZER
-
-typedef pthread_rwlock_t gl_rwlock_t;
-#   define gl_rwlock_define(STORAGECLASS, NAME) \
-      STORAGECLASS pthread_rwlock_t NAME;
-#   define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
-      STORAGECLASS pthread_rwlock_t NAME = gl_rwlock_initializer;
-#   define gl_rwlock_initializer \
-      PTHREAD_RWLOCK_INITIALIZER
-#   define glthread_rwlock_init(LOCK) \
-      (pthread_in_use () ? pthread_rwlock_init (LOCK, NULL) : 0)
-#   define glthread_rwlock_rdlock(LOCK) \
-      (pthread_in_use () ? pthread_rwlock_rdlock (LOCK) : 0)
-#   define glthread_rwlock_wrlock(LOCK) \
-      (pthread_in_use () ? pthread_rwlock_wrlock (LOCK) : 0)
-#   define glthread_rwlock_unlock(LOCK) \
-      (pthread_in_use () ? pthread_rwlock_unlock (LOCK) : 0)
-#   define glthread_rwlock_destroy(LOCK) \
-      (pthread_in_use () ? pthread_rwlock_destroy (LOCK) : 0)
-
-#  else
-
-typedef struct
-        {
-          int initialized;
-          pthread_mutex_t guard;   /* protects the initialization */
-          pthread_rwlock_t rwlock; /* read-write lock */
-        }
-        gl_rwlock_t;
-#   define gl_rwlock_define(STORAGECLASS, NAME) \
-      STORAGECLASS gl_rwlock_t NAME;
-#   define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
-      STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
-#   define gl_rwlock_initializer \
-      { 0, PTHREAD_MUTEX_INITIALIZER }
-#   define glthread_rwlock_init(LOCK) \
-      (pthread_in_use () ? glthread_rwlock_init_multithreaded (LOCK) : 0)
-#   define glthread_rwlock_rdlock(LOCK) \
-      (pthread_in_use () ? glthread_rwlock_rdlock_multithreaded (LOCK) : 0)
-#   define glthread_rwlock_wrlock(LOCK) \
-      (pthread_in_use () ? glthread_rwlock_wrlock_multithreaded (LOCK) : 0)
-#   define glthread_rwlock_unlock(LOCK) \
-      (pthread_in_use () ? glthread_rwlock_unlock_multithreaded (LOCK) : 0)
-#   define glthread_rwlock_destroy(LOCK) \
-      (pthread_in_use () ? glthread_rwlock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_rwlock_init_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock);
-
-#  endif
-
-# else
-
-typedef struct
-        {
-          pthread_mutex_t lock; /* protects the remaining fields */
-          pthread_cond_t waiting_readers; /* waiting readers */
-          pthread_cond_t waiting_writers; /* waiting writers */
-          unsigned int waiting_writers_count; /* number of waiting writers */
-          int runcount; /* number of readers running, or -1 when a writer runs */
-        }
-        gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_rwlock_t NAME;
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
-# define gl_rwlock_initializer \
-    { PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0 }
-# define glthread_rwlock_init(LOCK) \
-    (pthread_in_use () ? glthread_rwlock_init_multithreaded (LOCK) : 0)
-# define glthread_rwlock_rdlock(LOCK) \
-    (pthread_in_use () ? glthread_rwlock_rdlock_multithreaded (LOCK) : 0)
-# define glthread_rwlock_wrlock(LOCK) \
-    (pthread_in_use () ? glthread_rwlock_wrlock_multithreaded (LOCK) : 0)
-# define glthread_rwlock_unlock(LOCK) \
-    (pthread_in_use () ? glthread_rwlock_unlock_multithreaded (LOCK) : 0)
-# define glthread_rwlock_destroy(LOCK) \
-    (pthread_in_use () ? glthread_rwlock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_rwlock_init_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_wrlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_unlock_multithreaded (gl_rwlock_t *lock);
-extern int glthread_rwlock_destroy_multithreaded (gl_rwlock_t *lock);
-
-# endif
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-# if HAVE_PTHREAD_MUTEX_RECURSIVE
-
-#  if defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER || defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-
-typedef pthread_mutex_t gl_recursive_lock_t;
-#   define gl_recursive_lock_define(STORAGECLASS, NAME) \
-      STORAGECLASS pthread_mutex_t NAME;
-#   define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
-      STORAGECLASS pthread_mutex_t NAME = gl_recursive_lock_initializer;
-#   ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER
-#    define gl_recursive_lock_initializer \
-       PTHREAD_RECURSIVE_MUTEX_INITIALIZER
-#   else
-#    define gl_recursive_lock_initializer \
-       PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-#   endif
-#   define glthread_recursive_lock_init(LOCK) \
-      (pthread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
-#   define glthread_recursive_lock_lock(LOCK) \
-      (pthread_in_use () ? pthread_mutex_lock (LOCK) : 0)
-#   define glthread_recursive_lock_unlock(LOCK) \
-      (pthread_in_use () ? pthread_mutex_unlock (LOCK) : 0)
-#   define glthread_recursive_lock_destroy(LOCK) \
-      (pthread_in_use () ? pthread_mutex_destroy (LOCK) : 0)
-extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
-
-#  else
-
-typedef struct
-        {
-          pthread_mutex_t recmutex; /* recursive mutex */
-          pthread_mutex_t guard;    /* protects the initialization */
-          int initialized;
-        }
-        gl_recursive_lock_t;
-#   define gl_recursive_lock_define(STORAGECLASS, NAME) \
-      STORAGECLASS gl_recursive_lock_t NAME;
-#   define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
-      STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
-#   define gl_recursive_lock_initializer \
-      { PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, 0 }
-#   define glthread_recursive_lock_init(LOCK) \
-      (pthread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
-#   define glthread_recursive_lock_lock(LOCK) \
-      (pthread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
-#   define glthread_recursive_lock_unlock(LOCK) \
-      (pthread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
-#   define glthread_recursive_lock_destroy(LOCK) \
-      (pthread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
-
-#  endif
-
-# else
-
-/* Old versions of POSIX threads on Solaris did not have recursive locks.
-   We have to implement them ourselves.  */
-
-typedef struct
-        {
-          pthread_mutex_t mutex;
-          pthread_t owner;
-          unsigned long depth;
-        }
-        gl_recursive_lock_t;
-#  define gl_recursive_lock_define(STORAGECLASS, NAME) \
-     STORAGECLASS gl_recursive_lock_t NAME;
-#  define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
-     STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
-#  define gl_recursive_lock_initializer \
-     { PTHREAD_MUTEX_INITIALIZER, (pthread_t) 0, 0 }
-#  define glthread_recursive_lock_init(LOCK) \
-     (pthread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
-#  define glthread_recursive_lock_lock(LOCK) \
-     (pthread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
-#  define glthread_recursive_lock_unlock(LOCK) \
-     (pthread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
-#  define glthread_recursive_lock_destroy(LOCK) \
-     (pthread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
-
-# endif
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef pthread_once_t gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
-    STORAGECLASS pthread_once_t NAME = PTHREAD_ONCE_INIT;
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
-    (pthread_in_use ()                                                         \
-     ? pthread_once (ONCE_CONTROL, INITFUNCTION)                               \
-     : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
-extern int glthread_once_singlethreaded (pthread_once_t *once_control);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_PTH_THREADS
-
-/* Use the GNU Pth threads library.  */
-
-# include <pth.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_PTH_THREADS_WEAK
-
-/* Use weak references to the GNU Pth threads library.  */
-
-#  pragma weak pth_mutex_init
-#  pragma weak pth_mutex_acquire
-#  pragma weak pth_mutex_release
-#  pragma weak pth_rwlock_init
-#  pragma weak pth_rwlock_acquire
-#  pragma weak pth_rwlock_release
-#  pragma weak pth_once
-
-#  pragma weak pth_cancel
-#  define pth_in_use() (pth_cancel != NULL)
-
-# else
-
-#  define pth_in_use() 1
-
-# endif
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef pth_mutex_t gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME) \
-    STORAGECLASS pth_mutex_t NAME;
-# define gl_lock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS pth_mutex_t NAME = gl_lock_initializer;
-# define gl_lock_initializer \
-    PTH_MUTEX_INIT
-# define glthread_lock_init(LOCK) \
-    (pth_in_use() && !pth_mutex_init (LOCK) ? errno : 0)
-# define glthread_lock_lock(LOCK) \
-    (pth_in_use() && !pth_mutex_acquire (LOCK, 0, NULL) ? errno : 0)
-# define glthread_lock_unlock(LOCK) \
-    (pth_in_use() && !pth_mutex_release (LOCK) ? errno : 0)
-# define glthread_lock_destroy(LOCK) \
-    ((void)(LOCK), 0)
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-typedef pth_rwlock_t gl_rwlock_t;
-#  define gl_rwlock_define(STORAGECLASS, NAME) \
-     STORAGECLASS pth_rwlock_t NAME;
-#  define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
-     STORAGECLASS pth_rwlock_t NAME = gl_rwlock_initializer;
-#  define gl_rwlock_initializer \
-     PTH_RWLOCK_INIT
-#  define glthread_rwlock_init(LOCK) \
-     (pth_in_use() && !pth_rwlock_init (LOCK) ? errno : 0)
-#  define glthread_rwlock_rdlock(LOCK) \
-     (pth_in_use() && !pth_rwlock_acquire (LOCK, PTH_RWLOCK_RD, 0, NULL) ? errno : 0)
-#  define glthread_rwlock_wrlock(LOCK) \
-     (pth_in_use() && !pth_rwlock_acquire (LOCK, PTH_RWLOCK_RW, 0, NULL) ? errno : 0)
-#  define glthread_rwlock_unlock(LOCK) \
-     (pth_in_use() && !pth_rwlock_release (LOCK) ? errno : 0)
-#  define glthread_rwlock_destroy(LOCK) \
-     ((void)(LOCK), 0)
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-/* In Pth, mutexes are recursive by default.  */
-typedef pth_mutex_t gl_recursive_lock_t;
-#  define gl_recursive_lock_define(STORAGECLASS, NAME) \
-     STORAGECLASS pth_mutex_t NAME;
-#  define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
-     STORAGECLASS pth_mutex_t NAME = gl_recursive_lock_initializer;
-#  define gl_recursive_lock_initializer \
-     PTH_MUTEX_INIT
-#  define glthread_recursive_lock_init(LOCK) \
-     (pth_in_use() && !pth_mutex_init (LOCK) ? errno : 0)
-#  define glthread_recursive_lock_lock(LOCK) \
-     (pth_in_use() && !pth_mutex_acquire (LOCK, 0, NULL) ? errno : 0)
-#  define glthread_recursive_lock_unlock(LOCK) \
-     (pth_in_use() && !pth_mutex_release (LOCK) ? errno : 0)
-#  define glthread_recursive_lock_destroy(LOCK) \
-     ((void)(LOCK), 0)
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef pth_once_t gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
-    STORAGECLASS pth_once_t NAME = PTH_ONCE_INIT;
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
-    (pth_in_use ()                                                             \
-     ? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION)                \
-     : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
-extern int glthread_once_multithreaded (pth_once_t *once_control, void (*initfunction) (void));
-extern int glthread_once_singlethreaded (pth_once_t *once_control);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_SOLARIS_THREADS
-
-/* Use the old Solaris threads library.  */
-
-# include <thread.h>
-# include <synch.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_SOLARIS_THREADS_WEAK
-
-/* Use weak references to the old Solaris threads library.  */
-
-#  pragma weak mutex_init
-#  pragma weak mutex_lock
-#  pragma weak mutex_unlock
-#  pragma weak mutex_destroy
-#  pragma weak rwlock_init
-#  pragma weak rw_rdlock
-#  pragma weak rw_wrlock
-#  pragma weak rw_unlock
-#  pragma weak rwlock_destroy
-#  pragma weak thr_self
-
-#  pragma weak thr_suspend
-#  define thread_in_use() (thr_suspend != NULL)
-
-# else
-
-#  define thread_in_use() 1
-
-# endif
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef mutex_t gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME) \
-    STORAGECLASS mutex_t NAME;
-# define gl_lock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS mutex_t NAME = gl_lock_initializer;
-# define gl_lock_initializer \
-    DEFAULTMUTEX
-# define glthread_lock_init(LOCK) \
-    (thread_in_use () ? mutex_init (LOCK, USYNC_THREAD, NULL) : 0)
-# define glthread_lock_lock(LOCK) \
-    (thread_in_use () ? mutex_lock (LOCK) : 0)
-# define glthread_lock_unlock(LOCK) \
-    (thread_in_use () ? mutex_unlock (LOCK) : 0)
-# define glthread_lock_destroy(LOCK) \
-    (thread_in_use () ? mutex_destroy (LOCK) : 0)
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-typedef rwlock_t gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME) \
-    STORAGECLASS rwlock_t NAME;
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS rwlock_t NAME = gl_rwlock_initializer;
-# define gl_rwlock_initializer \
-    DEFAULTRWLOCK
-# define glthread_rwlock_init(LOCK) \
-    (thread_in_use () ? rwlock_init (LOCK, USYNC_THREAD, NULL) : 0)
-# define glthread_rwlock_rdlock(LOCK) \
-    (thread_in_use () ? rw_rdlock (LOCK) : 0)
-# define glthread_rwlock_wrlock(LOCK) \
-    (thread_in_use () ? rw_wrlock (LOCK) : 0)
-# define glthread_rwlock_unlock(LOCK) \
-    (thread_in_use () ? rw_unlock (LOCK) : 0)
-# define glthread_rwlock_destroy(LOCK) \
-    (thread_in_use () ? rwlock_destroy (LOCK) : 0)
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-/* Old Solaris threads did not have recursive locks.
-   We have to implement them ourselves.  */
-
-typedef struct
-        {
-          mutex_t mutex;
-          thread_t owner;
-          unsigned long depth;
-        }
-        gl_recursive_lock_t;
-# define gl_recursive_lock_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_recursive_lock_t NAME;
-# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
-# define gl_recursive_lock_initializer \
-    { DEFAULTMUTEX, (thread_t) 0, 0 }
-# define glthread_recursive_lock_init(LOCK) \
-    (thread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
-# define glthread_recursive_lock_lock(LOCK) \
-    (thread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
-# define glthread_recursive_lock_unlock(LOCK) \
-    (thread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
-# define glthread_recursive_lock_destroy(LOCK) \
-    (thread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
-extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef struct
-        {
-          volatile int inited;
-          mutex_t mutex;
-        }
-        gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_once_t NAME = { 0, DEFAULTMUTEX };
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
-    (thread_in_use ()                                                          \
-     ? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION)                \
-     : (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
-extern int glthread_once_multithreaded (gl_once_t *once_control, void (*initfunction) (void));
-extern int glthread_once_singlethreaded (gl_once_t *once_control);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_WIN32_THREADS
-
-# include <windows.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-/* We can use CRITICAL_SECTION directly, rather than the Win32 Event, Mutex,
-   Semaphore types, because
-     - we need only to synchronize inside a single process (address space),
-       not inter-process locking,
-     - we don't need to support trylock operations.  (TryEnterCriticalSection
-       does not work on Windows 95/98/ME.  Packages that need trylock usually
-       define their own mutex type.)  */
-
-/* There is no way to statically initialize a CRITICAL_SECTION.  It needs
-   to be done lazily, once only.  For this we need spinlocks.  */
-
-typedef struct { volatile int done; volatile long started; } gl_spinlock_t;
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef struct
-        {
-          gl_spinlock_t guard; /* protects the initialization */
-          CRITICAL_SECTION lock;
-        }
-        gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_lock_t NAME;
-# define gl_lock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_lock_t NAME = gl_lock_initializer;
-# define gl_lock_initializer \
-    { { 0, -1 } }
-# define glthread_lock_init(LOCK) \
-    (glthread_lock_init_func (LOCK), 0)
-# define glthread_lock_lock(LOCK) \
-    glthread_lock_lock_func (LOCK)
-# define glthread_lock_unlock(LOCK) \
-    glthread_lock_unlock_func (LOCK)
-# define glthread_lock_destroy(LOCK) \
-    glthread_lock_destroy_func (LOCK)
-extern void glthread_lock_init_func (gl_lock_t *lock);
-extern int glthread_lock_lock_func (gl_lock_t *lock);
-extern int glthread_lock_unlock_func (gl_lock_t *lock);
-extern int glthread_lock_destroy_func (gl_lock_t *lock);
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-/* It is impossible to implement read-write locks using plain locks, without
-   introducing an extra thread dedicated to managing read-write locks.
-   Therefore here we need to use the low-level Event type.  */
-
-typedef struct
-        {
-          HANDLE *array; /* array of waiting threads, each represented by an event */
-          unsigned int count; /* number of waiting threads */
-          unsigned int alloc; /* length of allocated array */
-          unsigned int offset; /* index of first waiting thread in array */
-        }
-        gl_carray_waitqueue_t;
-typedef struct
-        {
-          gl_spinlock_t guard; /* protects the initialization */
-          CRITICAL_SECTION lock; /* protects the remaining fields */
-          gl_carray_waitqueue_t waiting_readers; /* waiting readers */
-          gl_carray_waitqueue_t waiting_writers; /* waiting writers */
-          int runcount; /* number of readers running, or -1 when a writer runs */
-        }
-        gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_rwlock_t NAME;
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
-# define gl_rwlock_initializer \
-    { { 0, -1 } }
-# define glthread_rwlock_init(LOCK) \
-    (glthread_rwlock_init_func (LOCK), 0)
-# define glthread_rwlock_rdlock(LOCK) \
-    glthread_rwlock_rdlock_func (LOCK)
-# define glthread_rwlock_wrlock(LOCK) \
-    glthread_rwlock_wrlock_func (LOCK)
-# define glthread_rwlock_unlock(LOCK) \
-    glthread_rwlock_unlock_func (LOCK)
-# define glthread_rwlock_destroy(LOCK) \
-    glthread_rwlock_destroy_func (LOCK)
-extern void glthread_rwlock_init_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_rdlock_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_wrlock_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_unlock_func (gl_rwlock_t *lock);
-extern int glthread_rwlock_destroy_func (gl_rwlock_t *lock);
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-/* The Win32 documentation says that CRITICAL_SECTION already implements a
-   recursive lock.  But we need not rely on it: It's easy to implement a
-   recursive lock without this assumption.  */
-
-typedef struct
-        {
-          gl_spinlock_t guard; /* protects the initialization */
-          DWORD owner;
-          unsigned long depth;
-          CRITICAL_SECTION lock;
-        }
-        gl_recursive_lock_t;
-# define gl_recursive_lock_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_recursive_lock_t NAME;
-# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
-    STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
-# define gl_recursive_lock_initializer \
-    { { 0, -1 }, 0, 0 }
-# define glthread_recursive_lock_init(LOCK) \
-    (glthread_recursive_lock_init_func (LOCK), 0)
-# define glthread_recursive_lock_lock(LOCK) \
-    glthread_recursive_lock_lock_func (LOCK)
-# define glthread_recursive_lock_unlock(LOCK) \
-    glthread_recursive_lock_unlock_func (LOCK)
-# define glthread_recursive_lock_destroy(LOCK) \
-    glthread_recursive_lock_destroy_func (LOCK)
-extern void glthread_recursive_lock_init_func (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_lock_func (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_unlock_func (gl_recursive_lock_t *lock);
-extern int glthread_recursive_lock_destroy_func (gl_recursive_lock_t *lock);
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef struct
-        {
-          volatile int inited;
-          volatile long started;
-          CRITICAL_SECTION lock;
-        }
-        gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_once_t NAME = { -1, -1 };
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
-    (glthread_once_func (ONCE_CONTROL, INITFUNCTION), 0)
-extern void glthread_once_func (gl_once_t *once_control, void (*initfunction) (void));
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WIN32_THREADS)
-
-/* Provide dummy implementation if threads are not supported.  */
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-typedef int gl_lock_t;
-# define gl_lock_define(STORAGECLASS, NAME)
-# define gl_lock_define_initialized(STORAGECLASS, NAME)
-# define glthread_lock_init(NAME) 0
-# define glthread_lock_lock(NAME) 0
-# define glthread_lock_unlock(NAME) 0
-# define glthread_lock_destroy(NAME) 0
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-typedef int gl_rwlock_t;
-# define gl_rwlock_define(STORAGECLASS, NAME)
-# define gl_rwlock_define_initialized(STORAGECLASS, NAME)
-# define glthread_rwlock_init(NAME) 0
-# define glthread_rwlock_rdlock(NAME) 0
-# define glthread_rwlock_wrlock(NAME) 0
-# define glthread_rwlock_unlock(NAME) 0
-# define glthread_rwlock_destroy(NAME) 0
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-typedef int gl_recursive_lock_t;
-# define gl_recursive_lock_define(STORAGECLASS, NAME)
-# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME)
-# define glthread_recursive_lock_init(NAME) 0
-# define glthread_recursive_lock_lock(NAME) 0
-# define glthread_recursive_lock_unlock(NAME) 0
-# define glthread_recursive_lock_destroy(NAME) 0
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-typedef int gl_once_t;
-# define gl_once_define(STORAGECLASS, NAME) \
-    STORAGECLASS gl_once_t NAME = 0;
-# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
-    (*(ONCE_CONTROL) == 0 ? (*(ONCE_CONTROL) = ~ 0, INITFUNCTION (), 0) : 0)
-
-#endif
-
-/* ========================================================================= */
-
-/* Macros with built-in error handling.  */
-
-/* -------------------------- gl_lock_t datatype -------------------------- */
-
-#define gl_lock_init(NAME) \
-   do                                  \
-     {                                 \
-       if (glthread_lock_init (&NAME)) \
-         abort ();                     \
-     }                                 \
-   while (0)
-#define gl_lock_lock(NAME) \
-   do                                  \
-     {                                 \
-       if (glthread_lock_lock (&NAME)) \
-         abort ();                     \
-     }                                 \
-   while (0)
-#define gl_lock_unlock(NAME) \
-   do                                    \
-     {                                   \
-       if (glthread_lock_unlock (&NAME)) \
-         abort ();                       \
-     }                                   \
-   while (0)
-#define gl_lock_destroy(NAME) \
-   do                                     \
-     {                                    \
-       if (glthread_lock_destroy (&NAME)) \
-         abort ();                        \
-     }                                    \
-   while (0)
-
-/* ------------------------- gl_rwlock_t datatype ------------------------- */
-
-#define gl_rwlock_init(NAME) \
-   do                                    \
-     {                                   \
-       if (glthread_rwlock_init (&NAME)) \
-         abort ();                       \
-     }                                   \
-   while (0)
-#define gl_rwlock_rdlock(NAME) \
-   do                                      \
-     {                                     \
-       if (glthread_rwlock_rdlock (&NAME)) \
-         abort ();                         \
-     }                                     \
-   while (0)
-#define gl_rwlock_wrlock(NAME) \
-   do                                      \
-     {                                     \
-       if (glthread_rwlock_wrlock (&NAME)) \
-         abort ();                         \
-     }                                     \
-   while (0)
-#define gl_rwlock_unlock(NAME) \
-   do                                      \
-     {                                     \
-       if (glthread_rwlock_unlock (&NAME)) \
-         abort ();                         \
-     }                                     \
-   while (0)
-#define gl_rwlock_destroy(NAME) \
-   do                                       \
-     {                                      \
-       if (glthread_rwlock_destroy (&NAME)) \
-         abort ();                          \
-     }                                      \
-   while (0)
-
-/* --------------------- gl_recursive_lock_t datatype --------------------- */
-
-#define gl_recursive_lock_init(NAME) \
-   do                                            \
-     {                                           \
-       if (glthread_recursive_lock_init (&NAME)) \
-         abort ();                               \
-     }                                           \
-   while (0)
-#define gl_recursive_lock_lock(NAME) \
-   do                                            \
-     {                                           \
-       if (glthread_recursive_lock_lock (&NAME)) \
-         abort ();                               \
-     }                                           \
-   while (0)
-#define gl_recursive_lock_unlock(NAME) \
-   do                                              \
-     {                                             \
-       if (glthread_recursive_lock_unlock (&NAME)) \
-         abort ();                                 \
-     }                                             \
-   while (0)
-#define gl_recursive_lock_destroy(NAME) \
-   do                                               \
-     {                                              \
-       if (glthread_recursive_lock_destroy (&NAME)) \
-         abort ();                                  \
-     }                                              \
-   while (0)
-
-/* -------------------------- gl_once_t datatype -------------------------- */
-
-#define gl_once(NAME, INITFUNCTION) \
-   do                                           \
-     {                                          \
-       if (glthread_once (&NAME, INITFUNCTION)) \
-         abort ();                              \
-     }                                          \
-   while (0)
-
-/* ========================================================================= */
-
-#endif /* _LOCK_H */
diff --git a/lib/glthread/thread.c b/lib/glthread/thread.c
deleted file mode 100644
index 82d2ad4..0000000
--- a/lib/glthread/thread.c
+++ /dev/null
@@ -1,218 +0,0 @@
-/* Creating and controlling threads.
-   Copyright (C) 2005-2008 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2005.
-   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
-   gthr-win32.h.  */
-
-#include <config.h>
-
-/* Specification.  */
-#include "glthread/thread.h"
-
-#include <stdlib.h>
-#include "glthread/lock.h"
-
-/* ========================================================================= */
-
-#if USE_WIN32_THREADS
-
-#include <process.h>
-
-/* -------------------------- gl_thread_t datatype -------------------------- */
-
-/* The Thread-Local Storage (TLS) key that allows to access each thread's
-   'struct gl_thread_struct *' pointer.  */
-static DWORD self_key = (DWORD)-1;
-
-/* Initializes self_key.  This function must only be called once.  */
-static void
-do_init_self_key (void)
-{
-  self_key = TlsAlloc ();
-  /* If this fails, we're hosed.  */
-  if (self_key == (DWORD)-1)
-    abort ();
-}
-
-/* Initializes self_key.  */
-static void
-init_self_key (void)
-{
-  gl_once_define(static, once)
-  gl_once (once, do_init_self_key);
-}
-
-/* This structure contains information about a thread.
-   It is stored in TLS under key self_key.  */
-struct gl_thread_struct
-{
-  /* Fields for managing the handle.  */
-  HANDLE volatile handle;
-  CRITICAL_SECTION handle_lock;
-  /* Fields for managing the exit value.  */
-  void * volatile result;
-  /* Fields for managing the thread start.  */
-  void * (*func) (void *);
-  void *arg;
-};
-
-/* Return a real HANDLE object for the current thread.  */
-static inline HANDLE
-get_current_thread_handle (void)
-{
-  HANDLE this_handle;
-
-  /* GetCurrentThread() returns a pseudo-handle, i.e. only a symbolic
-     identifier, not a real handle.  */
-  if (!DuplicateHandle (GetCurrentProcess (), GetCurrentThread (),
-			GetCurrentProcess (), &this_handle,
-			0, FALSE, DUPLICATE_SAME_ACCESS))
-    abort ();
-  return this_handle;
-}
-
-gl_thread_t
-gl_thread_self_func (void)
-{
-  gl_thread_t thread;
-
-  if (self_key == (DWORD)-1)
-    init_self_key ();
-  thread = TlsGetValue (self_key);
-  if (thread == NULL)
-    {
-      /* This happens only in threads that have not been created through
-	 glthread_create(), such as the main thread.  */
-      for (;;)
-	{
-	  thread =
-	    (struct gl_thread_struct *)
-	    malloc (sizeof (struct gl_thread_struct));
-	  if (thread != NULL)
-	    break;
-	  /* Memory allocation failed.  There is not much we can do.  Have to
-	     busy-loop, waiting for the availability of memory.  */
-	  Sleep (1);
-	}
-
-      thread->handle = get_current_thread_handle ();
-      InitializeCriticalSection (&thread->handle_lock);
-      thread->result = NULL; /* just to be deterministic */
-      TlsSetValue (self_key, thread);
-    }
-  return thread;
-}
-
-/* The main function of a freshly creating thread.  It's a wrapper around
-   the FUNC and ARG arguments passed to glthread_create_func.  */
-static unsigned int WINAPI
-wrapper_func (void *varg)
-{
-  struct gl_thread_struct *thread = (struct gl_thread_struct *)varg;
-
-  EnterCriticalSection (&thread->handle_lock);
-  /* Create a new handle for the thread only if the parent thread did not yet
-     fill in the handle.  */
-  if (thread->handle == NULL)
-    thread->handle = get_current_thread_handle ();
-  LeaveCriticalSection (&thread->handle_lock);
-
-  if (self_key == (DWORD)-1)
-    init_self_key ();
-  TlsSetValue (self_key, thread);
-
-  /* Run the thread.  Store the exit value if the thread was not terminated
-     otherwise.  */
-  thread->result = thread->func (thread->arg);
-  return 0;
-}
-
-int
-glthread_create_func (gl_thread_t *threadp, void * (*func) (void *), void *arg)
-{
-  struct gl_thread_struct *thread =
-    (struct gl_thread_struct *) malloc (sizeof (struct gl_thread_struct));
-  if (thread == NULL)
-    return ENOMEM;
-  thread->handle = NULL;
-  InitializeCriticalSection (&thread->handle_lock);
-  thread->result = NULL; /* just to be deterministic */
-  thread->func = func;
-  thread->arg = arg;
-
-  {
-    unsigned int thread_id;
-    HANDLE thread_handle;
-
-    thread_handle = (HANDLE)
-      _beginthreadex (NULL, 100000, wrapper_func, thread, 0, &thread_id);
-      /* calls CreateThread with the same arguments */
-    if (thread_handle == NULL)
-      {
-	DeleteCriticalSection (&thread->handle_lock);
-	free (thread);
-	return EAGAIN;
-      }
-
-    EnterCriticalSection (&thread->handle_lock);
-    if (thread->handle == NULL)
-      thread->handle = thread_handle;
-    else
-      /* thread->handle was already set by the thread itself.  */
-      CloseHandle (thread_handle);
-    LeaveCriticalSection (&thread->handle_lock);
-
-    *threadp = thread;
-    return 0;
-  }
-}
-
-int
-glthread_join_func (gl_thread_t thread, void **retvalp)
-{
-  if (thread == NULL)
-    return EINVAL;
-
-  if (thread == gl_thread_self ())
-    return EDEADLK;
-
-  if (WaitForSingleObject (thread->handle, INFINITE) == WAIT_FAILED)
-    return EINVAL;
-
-  if (retvalp != NULL)
-    *retvalp = thread->result;
-
-  DeleteCriticalSection (&thread->handle_lock);
-  CloseHandle (thread->handle);
-  free (thread);
-
-  return 0;
-}
-
-int
-gl_thread_exit_func (void *retval)
-{
-  gl_thread_t thread = gl_thread_self ();
-  thread->result = retval;
-  _endthreadex (0); /* calls ExitThread (0) */
-  abort ();
-}
-
-#endif
-
-/* ========================================================================= */
diff --git a/lib/glthread/thread.h b/lib/glthread/thread.h
deleted file mode 100644
index c47a82e..0000000
--- a/lib/glthread/thread.h
+++ /dev/null
@@ -1,376 +0,0 @@
-/* Creating and controlling threads.
-   Copyright (C) 2005-2008 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2005.
-   Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
-   gthr-win32.h.  */
-
-/* This file contains primitives for creating and controlling threads.
-
-   Thread data type: gl_thread_t.
-
-   Creating a thread:
-       thread = gl_thread_create (func, arg);
-   Or with control of error handling:
-       err = glthread_create (&thread, func, arg);
-       extern int glthread_create (gl_thread_t *result,
-                                   void *(*func) (void *), void *arg);
-
-   Querying and changing the signal mask of a thread (not supported on all
-   platforms):
-       gl_thread_sigmask (how, newmask, oldmask);
-   Or with control of error handling:
-       err = glthread_sigmask (how, newmask, oldmask);
-       extern int glthread_sigmask (int how, const sigset_t *newmask, sigset_t *oldmask);
-
-   Waiting for termination of another thread:
-       gl_thread_join (thread, &return_value);
-   Or with control of error handling:
-       err = glthread_join (thread, &return_value);
-       extern int glthread_join (gl_thread_t thread, void **return_value_ptr);
-
-   Getting a reference to the current thread:
-       current = gl_thread_self ();
-       extern gl_thread_t gl_thread_self (void);
-
-   Terminating the current thread:
-       gl_thread_exit (return_value);
-       extern void gl_thread_exit (void *return_value) __attribute__ ((noreturn));
-
-   Requesting custom code to be executed at fork() time(not supported on all
-   platforms):
-       gl_thread_atfork (prepare_func, parent_func, child_func);
-   Or with control of error handling:
-       err = glthread_atfork (prepare_func, parent_func, child_func);
-       extern int glthread_atfork (void (*prepare_func) (void),
-                                   void (*parent_func) (void),
-                                   void (*child_func) (void));
-   Note that even on platforms where this is supported, use of fork() and
-   threads together is problematic, see
-     <http://lists.gnu.org/archive/html/bug-gnulib/2008-08/msg00062.html>
- */
-
-
-#ifndef _GLTHREAD_THREAD_H
-#define _GLTHREAD_THREAD_H
-
-#include <errno.h>
-#include <stdlib.h>
-
-/* ========================================================================= */
-
-#if USE_POSIX_THREADS
-
-/* Use the POSIX threads library.  */
-
-# include <pthread.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if PTHREAD_IN_USE_DETECTION_HARD
-
-/* The pthread_in_use() detection needs to be done at runtime.  */
-#  define pthread_in_use() \
-     glthread_in_use ()
-extern int glthread_in_use (void);
-
-# endif
-
-# if USE_POSIX_THREADS_WEAK
-
-/* Use weak references to the POSIX threads library.  */
-
-/* Weak references avoid dragging in external libraries if the other parts
-   of the program don't use them.  Here we use them, because we don't want
-   every program that uses libintl to depend on libpthread.  This assumes
-   that libpthread would not be loaded after libintl; i.e. if libintl is
-   loaded first, by an executable that does not depend on libpthread, and
-   then a module is dynamically loaded that depends on libpthread, libintl
-   will not be multithread-safe.  */
-
-/* The way to test at runtime whether libpthread is present is to test
-   whether a function pointer's value, such as &pthread_mutex_init, is
-   non-NULL.  However, some versions of GCC have a bug through which, in
-   PIC mode, &foo != NULL always evaluates to true if there is a direct
-   call to foo(...) in the same function.  To avoid this, we test the
-   address of a function in libpthread that we don't use.  */
-
-#  pragma weak pthread_create
-#  pragma weak pthread_sigmask
-#  pragma weak pthread_join
-#  ifndef pthread_self
-#   pragma weak pthread_self
-#  endif
-#  pragma weak pthread_exit
-#  if HAVE_PTHREAD_ATFORK
-#   pragma weak pthread_atfork
-#  endif
-
-#  if !PTHREAD_IN_USE_DETECTION_HARD
-#   pragma weak pthread_cancel
-#   define pthread_in_use() (pthread_cancel != NULL)
-#  endif
-
-# else
-
-#  if !PTHREAD_IN_USE_DETECTION_HARD
-#   define pthread_in_use() 1
-#  endif
-
-# endif
-
-/* -------------------------- gl_thread_t datatype -------------------------- */
-
-/* This choice of gl_thread_t assumes that
-     pthread_equal (a, b)  is equivalent to  ((a) == (b)).
-   This is the case on all platforms in use in 2008.  */
-typedef pthread_t gl_thread_t;
-# define glthread_create(THREADP, FUNC, ARG) \
-    (pthread_in_use () ? pthread_create (THREADP, NULL, FUNC, ARG) : ENOSYS)
-# define glthread_sigmask(HOW, SET, OSET) \
-    (pthread_in_use () ? pthread_sigmask (HOW, SET, OSET) : 0)
-# define glthread_join(THREAD, RETVALP) \
-    (pthread_in_use () ? pthread_join (THREAD, RETVALP) : 0)
-# define gl_thread_self() \
-    (pthread_in_use () ? (void *) pthread_self () : NULL)
-# define gl_thread_exit(RETVAL) \
-    (pthread_in_use () ? pthread_exit (RETVAL) : 0)
-
-# if HAVE_PTHREAD_ATFORK
-#  define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) \
-     (pthread_in_use () ? pthread_atfork (PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) : 0)
-# else
-#  define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
-# endif
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_PTH_THREADS
-
-/* Use the GNU Pth threads library.  */
-
-# include <pth.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_PTH_THREADS_WEAK
-
-/* Use weak references to the GNU Pth threads library.  */
-
-#  pragma weak pth_spawn
-#  pragma weak pth_sigmask
-#  pragma weak pth_join
-#  pragma weak pth_self
-#  pragma weak pth_exit
-
-#  pragma weak pth_cancel
-#  define pth_in_use() (pth_cancel != NULL)
-
-# else
-
-#  define pth_in_use() 1
-
-# endif
-/* -------------------------- gl_thread_t datatype -------------------------- */
-
-typedef pth_t gl_thread_t;
-# define glthread_create(THREADP, FUNC, ARG) \
-    (pth_in_use () ? ((*(THREADP) = pth_spawn (NULL, FUNC, ARG)) ? 0 : errno) : 0)
-# define glthread_sigmask(HOW, SET, OSET) \
-    (pth_in_use () && !pth_sigmask (HOW, SET, OSET) ? errno : 0)
-# define glthread_join(THREAD, RETVALP) \
-    (pth_in_use () && !pth_join (THREAD, RETVALP) ? errno : 0)
-# define gl_thread_self() \
-    (pth_in_use () ? (void *) pth_self () : 0)
-# define gl_thread_exit(RETVAL) \
-    (pth_in_use () ? pth_exit (RETVAL) : 0)
-# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_SOLARIS_THREADS
-
-/* Use the old Solaris threads library.  */
-
-# include <thread.h>
-# include <synch.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-# if USE_SOLARIS_THREADS_WEAK
-
-/* Use weak references to the old Solaris threads library.  */
-
-#  pragma weak thr_create
-#  pragma weak thr_join
-#  pragma weak thr_self
-#  pragma weak thr_exit
-
-#  pragma weak thr_suspend
-#  define thread_in_use() (thr_suspend != NULL)
-
-# else
-
-#  define thread_in_use() 1
-
-# endif
-
-/* -------------------------- gl_thread_t datatype -------------------------- */
-
-typedef thread_t gl_thread_t;
-# define glthread_create(THREADP, FUNC, ARG) \
-    (thread_in_use () ? thr_create (NULL, 0, FUNC, ARG, 0, THREADP) : 0)
-# define glthread_sigmask(HOW, SET, OSET) \
-    (thread_in_use () ? sigprocmask (HOW, SET, OSET) : 0)
-# define glthread_join(THREAD, RETVALP) \
-    (thread_in_use () ? thr_join (THREAD, NULL, RETVALP) : 0)
-# define gl_thread_self() \
-    (thread_in_use () ? (void *) thr_self () : 0)
-# define gl_thread_exit(RETVAL) \
-    (thread_in_use () ? thr_exit (RETVAL) : 0)
-# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if USE_WIN32_THREADS
-
-# include <windows.h>
-
-# ifdef __cplusplus
-extern "C" {
-# endif
-
-/* -------------------------- gl_thread_t datatype -------------------------- */
-
-/* The gl_thread_t is a pointer to a structure in memory.
-   Why not the thread handle?  If it were the thread handle, it would be hard
-   to implement gl_thread_self() (since GetCurrentThread () returns a pseudo-
-   handle, DuplicateHandle (GetCurrentThread ()) returns a handle that must be
-   closed afterwards, and there is no function for quickly retrieving a thread
-   handle from its id).
-   Why not the thread id?  I tried it.  It did not work: Sometimes ids appeared
-   that did not belong to running threads, and glthread_join failed with ESRCH.
- */
-typedef struct gl_thread_struct *gl_thread_t;
-# define glthread_create(THREADP, FUNC, ARG) \
-    glthread_create_func (THREADP, FUNC, ARG)
-# define glthread_sigmask(HOW, SET, OSET) \
-    /* unsupported */ 0
-# define glthread_join(THREAD, RETVALP) \
-    glthread_join_func (THREAD, RETVALP)
-# define gl_thread_self() \
-    gl_thread_self_func ()
-# define gl_thread_exit(RETVAL) \
-    gl_thread_exit_func (RETVAL)
-# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
-extern int glthread_create_func (gl_thread_t *threadp, void * (*func) (void *), void *arg);
-extern int glthread_join_func (gl_thread_t thread, void **retvalp);
-extern gl_thread_t gl_thread_self_func (void);
-extern int gl_thread_exit_func (void *retval);
-
-# ifdef __cplusplus
-}
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WIN32_THREADS)
-
-/* Provide dummy implementation if threads are not supported.  */
-
-typedef int gl_thread_t;
-# define glthread_create(THREADP, FUNC, ARG) ENOSYS
-# define glthread_sigmask(HOW, SET, OSET) 0
-# define glthread_join(THREAD, RETVALP) 0
-# define gl_thread_self() NULL
-# define gl_thread_exit(RETVAL) 0
-# define glthread_atfork(PREPARE_FUNC, PARENT_FUNC, CHILD_FUNC) 0
-
-#endif
-
-/* ========================================================================= */
-
-/* Macros with built-in error handling.  */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static inline gl_thread_t
-gl_thread_create (void *(*func) (void *arg), void *arg)
-{
-  gl_thread_t thread;
-  int ret;
-
-  ret = glthread_create (&thread, func, arg);
-  if (ret != 0)
-    abort ();
-  return thread;
-}
-#define gl_thread_sigmask(HOW, SET, OSET)     \
-   do                                         \
-     {                                        \
-       if (glthread_sigmask (HOW, SET, OSET)) \
-         abort ();                            \
-     }                                        \
-   while (0)
-#define gl_thread_join(THREAD, RETVAL)     \
-   do                                      \
-     {                                     \
-       if (glthread_join (THREAD, RETVAL)) \
-         abort ();                         \
-     }                                     \
-   while (0)
-#define gl_thread_atfork(PREPARE, PARENT, CHILD)     \
-   do                                                \
-     {                                               \
-       if (glthread_atfork (PREPARE, PARENT, CHILD)) \
-         abort ();                                   \
-     }                                               \
-   while (0)
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _GLTHREAD_THREAD_H */
diff --git a/lib/glthread/threadlib.c b/lib/glthread/threadlib.c
deleted file mode 100644
index 5feb304..0000000
--- a/lib/glthread/threadlib.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/* Multithreading primitives.
-   Copyright (C) 2005-2009 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2005.  */
-
-#include <config.h>
-
-/* ========================================================================= */
-
-#if USE_POSIX_THREADS
-
-/* Use the POSIX threads library.  */
-
-# include <pthread.h>
-# include <stdlib.h>
-
-# if PTHREAD_IN_USE_DETECTION_HARD
-
-/* The function to be executed by a dummy thread.  */
-static void *
-dummy_thread_func (void *arg)
-{
-  return arg;
-}
-
-int
-glthread_in_use (void)
-{
-  static int tested;
-  static int result; /* 1: linked with -lpthread, 0: only with libc */
-
-  if (!tested)
-    {
-      pthread_t thread;
-
-      if (pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
-	/* Thread creation failed.  */
-	result = 0;
-      else
-	{
-	  /* Thread creation works.  */
-	  void *retval;
-	  if (pthread_join (thread, &retval) != 0)
-	    abort ();
-	  result = 1;
-	}
-      tested = 1;
-    }
-  return result;
-}
-
-# endif
-
-#endif
-
-/* ========================================================================= */
-
-/* This declaration is solely to ensure that after preprocessing
-   this file is never empty.  */
-typedef int dummy;