diff -BbprN --unified=4 boost_1_47_0/libs/filesystem/v2/src/v2_path.cpp boost_1_47_0_ticket4688/libs/filesystem/v2/src/v2_path.cpp
--- boost_1_47_0/libs/filesystem/v2/src/v2_path.cpp	2011-01-11 13:39:33.000000000 -0800
+++ boost_1_47_0_ticket4688/libs/filesystem/v2/src/v2_path.cpp	2012-01-13 12:22:15.000000000 -0800
@@ -29,9 +29,9 @@
 #include <boost/system/error_code.hpp>
 
 #include <cwchar>     // for std::mbstate_t
 
-#if defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) 
+#if defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) || defined(__FreeBSD__)
 # include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
 #endif
 
 
@@ -42,9 +42,9 @@ namespace
   // caught. (A previous version was at namespace scope, so initialization
   // occurred before main(), preventing exceptions from being caught.)
   std::locale & loc()
   {
-#if !defined(macintosh) && !defined(__APPLE__) && !defined(__APPLE_CC__) 
+#if !defined(macintosh) && !defined(__APPLE__) && !defined(__APPLE_CC__) && !defined(__FreeBSD__)
     // ISO C calls this "the locale-specific native environment":
     static std::locale lc("");
 #else  // Mac OS
     // "All BSD system functions expect their string parameters to be in UTF-8 encoding
diff -BbprN --unified=4 boost_1_47_0/libs/filesystem/v3/src/path.cpp boost_1_47_0_ticket4688/libs/filesystem/v3/src/path.cpp
--- boost_1_47_0/libs/filesystem/v3/src/path.cpp	2011-07-05 07:49:42.000000000 -0700
+++ boost_1_47_0_ticket4688/libs/filesystem/v3/src/path.cpp	2012-01-13 12:22:42.000000000 -0800
@@ -34,9 +34,9 @@
 
 #ifdef BOOST_WINDOWS_API
 # include "windows_file_codecvt.hpp"
 # include <windows.h>
-#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
+#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) || defined(__FreeBSD__)
 # include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
 #endif
 
 #ifdef BOOST_FILESYSTEM_DEBUG
@@ -733,9 +733,9 @@ namespace
     std::locale global_loc = std::locale();
     std::locale loc(global_loc, new windows_file_codecvt);
     return loc;
 
-#   elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
+#   elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) || defined(__FreeBSD__)
     // "All BSD system functions expect their string parameters to be in UTF-8 encoding
     // and nothing else." See
     // http://developer.apple.com/mac/library/documentation/MacOSX/Conceptual/BPInternational/Articles/FileEncodings.html
     //