Index: boost/program_options/detail/convert.hpp
===================================================================
--- boost/program_options/detail/convert.hpp	(Revision 77740)
+++ boost/program_options/detail/convert.hpp	(Arbeitskopie)
@@ -8,7 +8,7 @@
 
 #include <boost/program_options/config.hpp>
 
-#if !defined(BOOST_NO_STD_WSTRING)
+#if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_STD_LOCALE)
 
 #include <boost/detail/workaround.hpp>
 
@@ -90,8 +90,26 @@
 #include <vector>
 #include <string>
 namespace boost{
+
+#ifndef BOOST_NO_STD_WSTRING
+    BOOST_PROGRAM_OPTIONS_DECL std::string
+    to_utf8(const std::wstring& s);
+
+    BOOST_PROGRAM_OPTIONS_DECL std::wstring
+    from_utf8(const std::string& s);
+
+    BOOST_PROGRAM_OPTIONS_DECL std::string
+    to_local_8_bit(const std::wstring& s);
+
+    BOOST_PROGRAM_OPTIONS_DECL std::wstring
+    from_local_8_bit(const std::string& s);
+#endif
+
    namespace program_options{
         BOOST_PROGRAM_OPTIONS_DECL std::string to_internal(const std::string&);
+#ifndef BOOST_NO_STD_WSTRING
+        BOOST_PROGRAM_OPTIONS_DECL std::string to_internal(const std::wstring& s);
+#endif
 
         template<class T>
         std::vector<std::string> to_internal(const std::vector<T>& s)
Index: libs/program_options/src/convert.cpp
===================================================================
--- libs/program_options/src/convert.cpp	(Revision 77740)
+++ libs/program_options/src/convert.cpp	(Arbeitskopie)
@@ -84,7 +84,7 @@
 
 namespace boost {
 
-#ifndef BOOST_NO_STD_WSTRING
+#if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_STD_LOCALE)
     BOOST_PROGRAM_OPTIONS_DECL std::wstring 
     from_8_bit(const std::string& s, 
                const std::codecvt<wchar_t, char, std::mbstate_t>& cvt)
@@ -142,6 +142,33 @@
     }
 #endif
 
+#ifdef BOOST_NO_STD_LOCALE
+    // these methods are NOT converting character sets!
+    BOOST_PROGRAM_OPTIONS_DECL std::string
+    to_utf8(const std::wstring& s)
+    {
+        return std::string(s.begin(), s.end());
+    }
+
+    BOOST_PROGRAM_OPTIONS_DECL std::wstring
+    from_utf8(const std::string& s)
+    {
+        return std::wstring(s.begin(), s.end());
+    }
+
+    BOOST_PROGRAM_OPTIONS_DECL std::string
+    to_local_8_bit(const std::wstring& s)
+    {
+        return std::string(s.begin(), s.end());
+    }
+
+    BOOST_PROGRAM_OPTIONS_DECL std::wstring
+    from_local_8_bit(const std::string& s)
+    {
+        return std::wstring(s.begin(), s.end());
+    }
+#endif
+
     namespace program_options
     {
         BOOST_PROGRAM_OPTIONS_DECL std::string to_internal(const std::string& s)