diff --git a/ap/build/uClibc/libpthread/linuxthreads/lockfile.c b/ap/build/uClibc/libpthread/linuxthreads/lockfile.c
new file mode 100644
index 0000000..5266b18
--- /dev/null
+++ b/ap/build/uClibc/libpthread/linuxthreads/lockfile.c
@@ -0,0 +1,52 @@
+/* lockfile - Handle locking and unlocking of stream.
+   Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <bits/libc-lock.h>
+#include <stdio.h>
+#include <pthread.h>
+#include "internals.h"
+
+/* Note: glibc puts flockfile, funlockfile, and ftrylockfile in both
+ * libc and libpthread.  In uClibc, they are now in libc only.  */
+
+void
+__flockfilelist(void)
+{
+}
+
+void
+__funlockfilelist(void)
+{
+}
+
+void
+__fresetlockfiles (void)
+{
+  FILE *fp;
+
+  pthread_mutexattr_t attr;
+
+  __pthread_mutexattr_init (&attr);
+  __pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE_NP);
+
+  for (fp = _stdio_openlist; fp != NULL; fp = fp->__nextopen)
+    pthread_mutex_init (&fp->__lock, &attr);
+
+  pthread_mutexattr_destroy(&attr);
+}