diff --git a/intl/textdomain.c b/intl/textdomain.c
new file mode 100644
index 0000000..8745a84
--- /dev/null
+++ b/intl/textdomain.c
@@ -0,0 +1,141 @@
+/* Implementation of the textdomain(3) function.
+   Copyright (C) 1995-1998, 2000-2003 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+   USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+#include "gettextP.h"
+
+#ifdef _LIBC
+/* We have to handle multi-threaded applications.  */
+# include <bits/libc-lock.h>
+#else
+/* Provide dummy implementation if this is outside glibc.  */
+# define __libc_rwlock_define(CLASS, NAME)
+# define __libc_rwlock_wrlock(NAME)
+# define __libc_rwlock_unlock(NAME)
+#endif
+
+/* The internal variables in the standalone libintl.a must have different
+   names than the internal variables in GNU libc, otherwise programs
+   using libintl.a cannot be linked statically.  */
+#if !defined _LIBC
+# define _nl_default_default_domain libintl_nl_default_default_domain
+# define _nl_current_default_domain libintl_nl_current_default_domain
+#endif
+
+/* @@ end of prolog @@ */
+
+/* Name of the default text domain.  */
+extern const char _nl_default_default_domain[] attribute_hidden;
+
+/* Default text domain in which entries for gettext(3) are to be found.  */
+extern const char *_nl_current_default_domain attribute_hidden;
+
+
+/* Names for the libintl functions are a problem.  They must not clash
+   with existing names and they should follow ANSI C.  But this source
+   code is also used in GNU C Library where the names have a __
+   prefix.  So we have to make a difference here.  */
+#ifdef _LIBC
+# define TEXTDOMAIN __textdomain
+# ifndef strdup
+#  define strdup(str) __strdup (str)
+# endif
+#else
+# define TEXTDOMAIN libintl_textdomain
+#endif
+
+/* Lock variable to protect the global data in the gettext implementation.  */
+__libc_rwlock_define (extern, _nl_state_lock attribute_hidden)
+
+/* Set the current default message catalog to DOMAINNAME.
+   If DOMAINNAME is null, return the current default.
+   If DOMAINNAME is "", reset to the default of "messages".  */
+char *
+TEXTDOMAIN (const char *domainname)
+{
+  char *new_domain;
+  char *old_domain;
+
+  /* A NULL pointer requests the current setting.  */
+  if (domainname == NULL)
+    return (char *) _nl_current_default_domain;
+
+  __libc_rwlock_wrlock (_nl_state_lock);
+
+  old_domain = (char *) _nl_current_default_domain;
+
+  /* If domain name is the null string set to default domain "messages".  */
+  if (domainname[0] == '\0'
+      || strcmp (domainname, _nl_default_default_domain) == 0)
+    {
+      _nl_current_default_domain = _nl_default_default_domain;
+      new_domain = (char *) _nl_current_default_domain;
+    }
+  else if (strcmp (domainname, old_domain) == 0)
+    /* This can happen and people will use it to signal that some
+       environment variable changed.  */
+    new_domain = old_domain;
+  else
+    {
+      /* If the following malloc fails `_nl_current_default_domain'
+	 will be NULL.  This value will be returned and so signals we
+	 are out of core.  */
+#if defined _LIBC || defined HAVE_STRDUP
+      new_domain = strdup (domainname);
+#else
+      size_t len = strlen (domainname) + 1;
+      new_domain = (char *) malloc (len);
+      if (new_domain != NULL)
+	memcpy (new_domain, domainname, len);
+#endif
+
+      if (new_domain != NULL)
+	_nl_current_default_domain = new_domain;
+    }
+
+  /* We use this possibility to signal a change of the loaded catalogs
+     since this is most likely the case and there is no other easy we
+     to do it.  Do it only when the call was successful.  */
+  if (new_domain != NULL)
+    {
+      ++_nl_msg_cat_cntr;
+
+      if (old_domain != new_domain && old_domain != _nl_default_default_domain)
+	free (old_domain);
+    }
+
+  __libc_rwlock_unlock (_nl_state_lock);
+
+  return new_domain;
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library.  */
+weak_alias (__textdomain, textdomain);
+#endif