Index: acinclude.m4
===================================================================
--- acinclude.m4	(revision 192154)
+++ acinclude.m4	(working copy)
@@ -1862,6 +1862,9 @@
       darwin* | freebsd*)
 	enable_clocale_flag=darwin
 	;;
+      openbsd*)
+	enable_clocale_flag=newlib
+	;;
       *)
 	if test x"$with_newlib" = x"yes"; then
 	  enable_clocale_flag=newlib
Index: config/os/bsd/openbsd/ctype_base.h
===================================================================
--- config/os/bsd/openbsd/ctype_base.h	(revision 0)
+++ config/os/bsd/openbsd/ctype_base.h	(working copy)
@@ -0,0 +1,59 @@
+// Locale support -*- C++ -*-
+
+// Copyright (C) 2000, 2009, 2012 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 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 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/>.
+
+//
+// ISO C++ 14882: 22.1  Locales
+//
+  
+// Information as gleaned from /usr/include/ctype.h on OpenBSD.
+  
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  /// @brief  Base class for ctype.
+  struct ctype_base
+  {
+    // Non-standard typedefs.
+    typedef const short*	__to_type;
+
+    // NB: Offsets into ctype<char>::_M_table force a particular size
+    // on the mask type. Because of this, we don't use an enum.
+    typedef char		mask;
+
+    static const mask upper	= _U;
+    static const mask lower	= _L;
+    static const mask alpha	= _U | _L;
+    static const mask digit	= _N;
+    static const mask xdigit	= _N | _X;
+    static const mask space	= _S;
+    static const mask print	= _P | _U | _L | _N | _B;
+    static const mask graph	= _P | _U | _L | _N;
+    static const mask cntrl	= _C;
+    static const mask punct	= _P;
+    static const mask alnum	= _U | _L | _N;
+  };
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
Index: config/os/bsd/openbsd/ctype_configure_char.cc
===================================================================
--- config/os/bsd/openbsd/ctype_configure_char.cc	(revision 0)
+++ config/os/bsd/openbsd/ctype_configure_char.cc	(working copy)
@@ -0,0 +1,99 @@
+// Locale support -*- C++ -*-
+
+// Copyright (C) 2011 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 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 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/>.
+
+/** @file ctype_configure_char.cc */
+
+//
+// ISO C++ 14882: 22.1  Locales
+//
+
+#include <locale>
+#include <cstdlib>
+#include <cstring>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+// Information as gleaned from /usr/include/ctype.h
+
+  const ctype_base::mask*
+  ctype<char>::classic_table() throw()
+  { return _ctype_ + 1; }
+
+  ctype<char>::ctype(__c_locale, const mask* __table, bool __del, 
+		     size_t __refs) 
+  : facet(__refs), _M_del(__table != 0 && __del), 
+  _M_toupper(NULL), _M_tolower(NULL), 
+  _M_table(__table ? __table : classic_table())
+  { 
+    memset(_M_widen, 0, sizeof(_M_widen));
+    _M_widen_ok = 0;
+    memset(_M_narrow, 0, sizeof(_M_narrow));
+    _M_narrow_ok = 0;
+  }
+
+  ctype<char>::ctype(const mask* __table, bool __del, size_t __refs) 
+  : facet(__refs), _M_del(__table != 0 && __del), 
+  _M_toupper(NULL), _M_tolower(NULL), 
+  _M_table(__table ? __table : classic_table())
+  { 
+    memset(_M_widen, 0, sizeof(_M_widen));
+    _M_widen_ok = 0;
+    memset(_M_narrow, 0, sizeof(_M_narrow));
+    _M_narrow_ok = 0;
+  }
+
+  char
+  ctype<char>::do_toupper(char __c) const
+  { return ::toupper((int) __c); }
+
+  const char*
+  ctype<char>::do_toupper(char* __low, const char* __high) const
+  {
+    while (__low < __high)
+      {
+	*__low = ::toupper((int) *__low);
+	++__low;
+      }
+    return __high;
+  }
+
+  char
+  ctype<char>::do_tolower(char __c) const
+  { return ::tolower((int) __c); }
+
+  const char* 
+  ctype<char>::do_tolower(char* __low, const char* __high) const
+  {
+    while (__low < __high)
+      {
+	*__low = ::tolower((int) *__low);
+	++__low;
+      }
+    return __high;
+  }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
Index: config/os/bsd/openbsd/ctype_inline.h
===================================================================
--- config/os/bsd/openbsd/ctype_inline.h	(revision 0)
+++ config/os/bsd/openbsd/ctype_inline.h	(working copy)
@@ -0,0 +1,74 @@
+// Locale support -*- C++ -*-
+
+// Copyright (C) 2010 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 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 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/>.
+
+/** @file bits/ctype_inline.h
+ *  This is an internal header file, included by other library headers.
+ *  Do not attempt to use it directly. @headername{locale}
+ */
+
+//
+// ISO C++ 14882: 22.1  Locales
+//
+
+// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
+// functions go in ctype.cc
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  bool
+  ctype<char>::
+  is(mask __m, char __c) const
+  { return _M_table[static_cast<unsigned char>(__c)] & __m; }
+
+  const char*
+  ctype<char>::
+  is(const char* __low, const char* __high, mask* __vec) const
+  {
+    while (__low < __high)
+      *__vec++ = _M_table[static_cast<unsigned char>(*__low++)];
+    return __high;
+  }
+
+  const char*
+  ctype<char>::
+  scan_is(mask __m, const char* __low, const char* __high) const
+  {
+    while (__low < __high && !this->is(__m, *__low))
+      ++__low;
+    return __low;
+  }
+
+  const char*
+  ctype<char>::
+  scan_not(mask __m, const char* __low, const char* __high) const
+  {
+    while (__low < __high && this->is(__m, *__low) != 0)
+      ++__low;
+    return __low;
+  }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
Index: config/os/bsd/openbsd/os_defines.h
===================================================================
--- config/os/bsd/openbsd/os_defines.h	(revision 0)
+++ config/os/bsd/openbsd/os_defines.h	(working copy)
@@ -0,0 +1,41 @@
+// Specific definitions for OpenBSD  -*- C++ -*-
+
+// Copyright (C) 2000, 2002, 2009, 2012 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library 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 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 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/>.
+
+/** @file bits/os_defines.h
+ *  This is an internal header file, included by other library headers.
+ *  Do not attempt to use it directly. @headername{iosfwd}
+ */
+
+#ifndef _GLIBCXX_OS_DEFINES
+#define _GLIBCXX_OS_DEFINES 1
+
+// System-specific #define, typedefs, corrections, etc, go here.  This
+// file will come before all others.
+
+#define _GLIBCXX_USE_C99_DYNAMIC (!(__ISO_C_VISIBLE >= 1999))
+#define _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC _GLIBCXX_USE_C99_DYNAMIC
+#define _GLIBCXX_USE_C99_FLOAT_TRANSCENDENTALS_DYNAMIC _GLIBCXX_USE_C99_DYNAMIC
+#define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC _GLIBCXX_USE_C99_DYNAMIC
+
+#endif
Index: configure.host
===================================================================
--- configure.host	(revision 192154)
+++ configure.host	(working copy)
@@ -291,6 +291,9 @@
   netbsd*)
     os_include_dir="os/bsd/netbsd"
     ;;
+  openbsd*)
+    os_include_dir="os/bsd/openbsd"
+    ;;
   qnx6.[12]*)
     os_include_dir="os/qnx/qnx6.1"
     c_model=c
