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diff --git a/gcc/gthr-posix.c b/gcc/gthr-posix.c
new file mode 100644
index 00000000..429c3f46
--- /dev/null
+++ b/gcc/gthr-posix.c
@@ -0,0 +1,264 @@
+/* POSIX threads dummy routines for systems without weak definitions.  */
+/* Compile this one with gcc.  */
+/* Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "tconfig.h"
+#include "tm.h"
+# define __gthrw_pragma(pragma) _Pragma (#pragma)
+/* Define so we provide weak definitions of functions used by libobjc only.  */
+#define _LIBOBJC_WEAK
+#include "gthr.h"
+
+int
+pthread_once (pthread_once_t *once ATTRIBUTE_UNUSED,
+	      void (*func) (void) ATTRIBUTE_UNUSED)
+{
+  return -1;
+}
+
+int
+pthread_key_create (pthread_key_t *key ATTRIBUTE_UNUSED,
+		    void (*dtor) (void *) ATTRIBUTE_UNUSED)
+{
+  return -1;
+}
+
+int
+pthread_key_delete (pthread_key_t key ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+void *
+pthread_getspecific (pthread_key_t key ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_setspecific (pthread_key_t key ATTRIBUTE_UNUSED,
+		     const void *ptr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_create (pthread_t *thread ATTRIBUTE_UNUSED,
+		const pthread_attr_t *attr ATTRIBUTE_UNUSED,
+		void *(*start_routine) (void *) ATTRIBUTE_UNUSED,
+		void *arg ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int 
+pthread_join (pthread_t thread ATTRIBUTE_UNUSED, 
+	      void **value_ptr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+void
+pthread_exit (void *value_ptr ATTRIBUTE_UNUSED)
+{
+}
+
+int 
+pthread_detach (pthread_t thread ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cancel (pthread_t thread ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutex_lock (pthread_mutex_t *mutex ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutex_trylock (pthread_mutex_t *mutex ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+#ifdef _POSIX_TIMEOUTS
+#if _POSIX_TIMEOUTS >= 0
+int
+pthread_mutex_timedlock (pthread_mutex_t *mutex ATTRIBUTE_UNUSED,
+			 const struct timespec *abs_timeout ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+#endif
+#endif /* _POSIX_TIMEOUTS */
+
+int
+pthread_mutex_unlock (pthread_mutex_t *mutex ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutexattr_init (pthread_mutexattr_t *attr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutexattr_settype (pthread_mutexattr_t *attr ATTRIBUTE_UNUSED,
+			   int type ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutexattr_destroy (pthread_mutexattr_t *attr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cond_broadcast (pthread_cond_t *cond ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cond_destroy (pthread_cond_t *cond ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cond_init (pthread_cond_t *cond ATTRIBUTE_UNUSED,
+		   const pthread_condattr_t *attr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cond_signal (pthread_cond_t *cond ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cond_wait (pthread_cond_t *cond ATTRIBUTE_UNUSED,
+		   pthread_mutex_t *mutex ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_cond_timedwait (pthread_cond_t *cond ATTRIBUTE_UNUSED, 
+			pthread_mutex_t *mutex ATTRIBUTE_UNUSED, 
+			const struct timespec *abstime ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutex_init (pthread_mutex_t *mutex ATTRIBUTE_UNUSED,
+		    const pthread_mutexattr_t *attr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_mutex_destroy (pthread_mutex_t *mutex ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+pthread_t
+pthread_self (void)
+{
+  return (pthread_t) 0;
+}
+
+#ifdef _POSIX_PRIORITY_SCHEDULING
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+int
+sched_get_priority_max (int policy ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+sched_get_priority_min (int policy ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+#endif /* _POSIX_PRIORITY_SCHEDULING */
+
+int
+sched_yield (void)
+{
+  return 0;
+}
+
+int
+pthread_attr_destroy (pthread_attr_t *attr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_attr_init (pthread_attr_t *attr ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_attr_setdetachstate (pthread_attr_t *attr ATTRIBUTE_UNUSED,
+			     int detachstate ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+int
+pthread_getschedparam (pthread_t thread ATTRIBUTE_UNUSED,
+		       int *policy ATTRIBUTE_UNUSED,
+		       struct sched_param *param ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+pthread_setschedparam (pthread_t thread ATTRIBUTE_UNUSED,
+		       int policy ATTRIBUTE_UNUSED,
+		       const struct sched_param *param ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+#endif /* _POSIX_THREAD_PRIORITY_SCHEDULING */
+