147 files changed, 21715 insertions, 0 deletions
diff --git a/src/boost/libs/filesystem/CMakeLists.txt b/src/boost/libs/filesystem/CMakeLists.txt
new file mode 100644
index 00000000..94f03b35
--- /dev/null
+++ b/src/boost/libs/filesystem/CMakeLists.txt
@@ -0,0 +1,59 @@
+# Copyright 2019 Mike Dev
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
+#
+# NOTE: CMake support for Boost.Filesystem is currently experimental at best
+#       and the interface is likely to change in the future
+
+cmake_minimum_required( VERSION 3.5 )
+project( BoostFilesystem )
+
+add_library( boost_filesystem
+    src/codecvt_error_category.cpp
+    src/exception.cpp
+    src/operations.cpp
+    src/directory.cpp
+    src/path.cpp
+    src/path_traits.cpp
+    src/portability.cpp
+    src/unique_path.cpp
+    src/utf8_codecvt_facet.cpp
+    src/windows_file_codecvt.cpp
+)
+
+add_library( Boost::filesystem ALIAS boost_filesystem )
+
+target_include_directories( boost_filesystem PUBLIC include )
+
+target_compile_definitions( boost_filesystem
+    PUBLIC
+        # NOTE:
+        # We deactivate autolinking, because cmake based builds don't need it
+        # and we don't implement name mangling for the library file anyway.
+        # Ususally the parent CMakeLists.txt file should already have globally defined BOOST_ALL_NO_LIB
+        BOOST_FILESYSTEM_NO_LIB
+        $<$<STREQUAL:$<TARGET_PROPERTY:boost_filesystem,TYPE>,SHARED_LIBRARY>:BOOST_FILESYSTEM_DYN_LINK=1>
+        $<$<STREQUAL:$<TARGET_PROPERTY:boost_filesystem,TYPE>,STATIC_LIBRARY>:BOOST_FILESYSTEM_STATIC_LINK=1>
+
+    PRIVATE
+        BOOST_FILESYSTEM_SOURCE
+)
+
+target_link_libraries( boost_filesystem
+    PUBLIC
+        Boost::assert
+        Boost::config
+        Boost::container_hash
+        Boost::core
+        Boost::detail
+        Boost::io
+        Boost::iterator
+        Boost::smart_ptr
+        Boost::system
+        Boost::type_traits
+)
+
+target_link_libraries( boost_filesystem
+    PRIVATE
+        Boost::winapi
+)
diff --git a/src/boost/libs/filesystem/README.md b/src/boost/libs/filesystem/README.md
new file mode 100644
index 00000000..f31d689b
--- /dev/null
+++ b/src/boost/libs/filesystem/README.md
@@ -0,0 +1,26 @@
+# Boost.Filesystem
+
+Boost.Filesystem, part of collection of the [Boost C++ Libraries](https://github.com/boostorg), provides facilities to manipulate files and directories, and the paths that identify them.
+
+### Directories
+
+* **doc** - Documentation sources
+* **include** - Interface headers of Boost.Filesystem
+* **src** - Compilable source files of Boost.Filesystem
+* **test** - Boost.Filesystem unit tests
+* **example** - Boost.Filesystem usage examples
+
+### More information
+
+* [Documentation](https://boost.org/libs/filesystem)
+* [Report bugs](https://github.com/boostorg/filesystem/issues/new). Be sure to mention Boost version, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
+* Submit your patches as pull requests against **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
+
+### Build status
+
+Master: [![AppVeyor](https://ci.appveyor.com/api/projects/status/nx3e7bcavvn3q953?svg=true)](https://ci.appveyor.com/project/Lastique/filesystem/branch/master) [![Travis CI](https://travis-ci.org/boostorg/filesystem.svg?branch=master)](https://travis-ci.org/boostorg/filesystem)
+Develop: [![AppVeyor](https://ci.appveyor.com/api/projects/status/nx3e7bcavvn3q953/branch/develop?svg=true)](https://ci.appveyor.com/project/Lastique/filesystem/branch/develop) [![Travis CI](https://travis-ci.org/boostorg/filesystem.svg?branch=develop)](https://travis-ci.org/boostorg/filesystem)
+
+### License
+
+Distributed under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
diff --git a/src/boost/libs/filesystem/bug/Jamfile.v2 b/src/boost/libs/filesystem/bug/Jamfile.v2
new file mode 100644
index 00000000..c6e8d6e6
--- /dev/null
+++ b/src/boost/libs/filesystem/bug/Jamfile.v2
@@ -0,0 +1,17 @@
+# Boost Filesystem Library Bug report Jamfile
+ 
+# Copyright Beman Dawes 2014
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+
+# Library home page: http://www.boost.org/libs/filesystem
+
+project
+    : requirements
+      <library>/boost/filesystem//boost_filesystem
+    ;
+
+exe bug : bug.cpp : <link>static ;
+
+# install in ./bin; invoke via "b2", not "b2 install"
+install bin : bug ;
diff --git a/src/boost/libs/filesystem/bug/bug.cpp b/src/boost/libs/filesystem/bug/bug.cpp
new file mode 100644
index 00000000..6a1aea91
--- /dev/null
+++ b/src/boost/libs/filesystem/bug/bug.cpp
@@ -0,0 +1,19 @@
+//  filesystem/bug/bug.cpp
+
+#include <boost/detail/lightweight_test_report.hpp>
+#include <boost/filesystem.hpp>
+
+namespace fs = boost::filesystem;
+
+int test_main(int, char*[])     // note name
+{
+  BOOST_TEST(2 + 2 == 5);       // one convertible-to-bool argument
+  BOOST_TEST_EQ(4 + 4, 9);      // two EqualityComparible arguments
+  BOOST_TEST(fs::exists("."));  // should pass, so nothing reported
+
+  return ::boost::report_errors();   // required
+}
+
+//  Copyright Beman Dawes 2014
+//  Distributed under the Boost Software License, Version 1.0.
+//  www.boost.org/LICENSE_1_0.txt
diff --git a/src/boost/libs/filesystem/bug/index.html b/src/boost/libs/filesystem/bug/index.html
new file mode 100644
index 00000000..985b9c0c
--- /dev/null
+++ b/src/boost/libs/filesystem/bug/index.html
@@ -0,0 +1,13 @@
+<html>
+<head>
+<meta http-equiv="refresh" content="0; URL=../doc/issue_reporting.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="../doc/issue_reporting.html">../doc/issue_reporting.html</a>.
+<hr>
+<p>&copy; Copyright Beman Dawes, 2014</p>
+<p> Distributed under the Boost Software License, Version 1.0.
+See http://www.boost.org/LICENSE_1_0.txt</p>
+</body>
+</html>
diff --git a/src/boost/libs/filesystem/build/Jamfile.v2 b/src/boost/libs/filesystem/build/Jamfile.v2
new file mode 100644
index 00000000..01c33753
--- /dev/null
+++ b/src/boost/libs/filesystem/build/Jamfile.v2
@@ -0,0 +1,39 @@
+# Boost Filesystem Library Build Jamfile
+
+# (C) Copyright Beman Dawes 2002-2006
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+
+# See library home page at http://www.boost.org/libs/filesystem
+
+project boost/filesystem
+    : requirements <host-os>hpux,<toolset>gcc:<define>_INCLUDE_STDC__SOURCE_199901
+    : source-location ../src
+    : usage-requirements # pass these requirement to dependents (i.e. users)
+      <link>shared:<define>BOOST_FILESYSTEM_DYN_LINK=1
+      <link>static:<define>BOOST_FILESYSTEM_STATIC_LINK=1
+    ;
+
+SOURCES =
+    codecvt_error_category
+    exception
+    directory
+    operations
+    path
+    path_traits
+    portability
+    unique_path
+    utf8_codecvt_facet
+    windows_file_codecvt
+    ;
+
+lib boost_filesystem
+    : $(SOURCES).cpp
+    : <define>BOOST_FILESYSTEM_SOURCE
+      <link>shared:<define>BOOST_FILESYSTEM_DYN_LINK=1
+      <link>static:<define>BOOST_FILESYSTEM_STATIC_LINK=1
+    :
+    :
+    ;
+
+boost-install boost_filesystem ;
diff --git a/src/boost/libs/filesystem/example/Jamfile.v2 b/src/boost/libs/filesystem/example/Jamfile.v2
new file mode 100644
index 00000000..79722835
--- /dev/null
+++ b/src/boost/libs/filesystem/example/Jamfile.v2
@@ -0,0 +1,25 @@
+# Boost Filesystem Library Example Jamfile
+ 
+# (C) Copyright Vladimir Prus 2003
+
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+
+# Library home page: http://www.boost.org/libs/filesystem
+
+project
+    : requirements
+      <library>/boost/filesystem//boost_filesystem
+      <link>static
+    ;
+
+exe tut0 : tut0.cpp ;
+exe tut1 : tut1.cpp ;
+exe tut2 : tut2.cpp ;
+exe tut3 : tut3.cpp ;
+exe tut4 : tut4.cpp ;
+exe tut5 : tut5.cpp ;
+exe path_info : path_info.cpp ;
+exe file_status : file_status.cpp ;
+exe file_size : file_size.cpp ;
+exe directory_symlink_parent_resolution : directory_symlink_parent_resolution.cpp ;
+\ No newline at end of file
diff --git a/src/boost/libs/filesystem/example/directory_symlink_parent_resolution.cpp b/src/boost/libs/filesystem/example/directory_symlink_parent_resolution.cpp
new file mode 100644
index 00000000..a204b6e9
--- /dev/null
+++ b/src/boost/libs/filesystem/example/directory_symlink_parent_resolution.cpp
@@ -0,0 +1,41 @@
+//  directory_symlink_parent_resolution.cpp  -------------------------------------------//
+
+//  Copyright Beman Dawes 2015
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/string_file.hpp>
+#include <boost/detail/lightweight_main.hpp>
+#include <iostream>
+#include <string>
+using std::cout;
+using std::endl;
+using namespace boost::filesystem;
+
+int cpp_main(int argc, char* argv[])
+{
+# ifdef BOOST_WINDOWS_API
+  cout  << "BOOST_WINDOWS_API" << endl;
+# else
+  cout  << "BOOST_POSIX_API" << endl;
+# endif
+
+  path test_dir(current_path() / "dspr_demo");
+
+  remove_all(test_dir);
+  create_directories(test_dir / "a/c/d");
+  current_path(test_dir / "a");
+  create_directory_symlink("c/d", "b");
+  save_string_file("name.txt", "Windows");
+  save_string_file("c/name.txt", "POSIX");
+  current_path(test_dir);
+  std::string s;
+  load_string_file("a/b/../name.txt", s);
+  cout << s << endl;
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/error_demo.cpp b/src/boost/libs/filesystem/example/error_demo.cpp
new file mode 100644
index 00000000..ce16b3bc
--- /dev/null
+++ b/src/boost/libs/filesystem/example/error_demo.cpp
@@ -0,0 +1,185 @@
+//  error_demo.cpp  --------------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//  The purpose of this program is to demonstrate how error reporting works.            //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+#include <boost/filesystem.hpp>
+#include <boost/system/system_error.hpp>
+#include <iostream>
+
+using std::cout;
+using boost::filesystem::path;
+using boost::filesystem::filesystem_error;
+using boost::system::error_code;
+using boost::system::system_error;
+namespace fs = boost::filesystem;
+
+namespace
+{
+  void report_system_error(const system_error& ex)
+  {
+    cout << " threw system_error:\n"
+         << "    ex.code().value() is " << ex.code().value() << '\n'
+         << "    ex.code().category().name() is " << ex.code().category().name() << '\n'
+         << "    ex.what() is " << ex.what() << '\n'
+         ;
+  }
+
+  void report_filesystem_error(const system_error& ex)
+  {
+    cout << "  threw filesystem_error exception:\n"
+         << "    ex.code().value() is " << ex.code().value() << '\n'
+         << "    ex.code().category().name() is " << ex.code().category().name() << '\n'
+         << "    ex.what() is " << ex.what() << '\n'
+         ;
+  }
+
+  void report_status(fs::file_status s)
+  {
+    cout << "  file_status::type() is ";
+    switch (s.type())
+    {
+    case fs::status_error:
+      cout << "status_error\n"; break;
+    case fs::file_not_found:
+      cout << "file_not_found\n"; break;
+    case fs::regular_file:
+      cout << "regular_file\n"; break;
+    case fs::directory_file:
+      cout << "directory_file\n"; break;
+    case fs::symlink_file:
+      cout << "symlink_file\n"; break;
+    case fs::block_file:
+      cout << "block_file\n"; break;
+    case fs::character_file:
+      cout << "character_file\n"; break;
+    case fs::fifo_file:
+      cout << "fifo_file\n"; break;
+    case fs::socket_file:
+      cout << "socket_file\n"; break;
+    case fs::type_unknown:
+      cout << "type_unknown\n"; break;
+    default:
+      cout << "not a valid enumeration constant\n";
+    }
+  }
+
+  void report_error_code(const error_code& ec)
+  {
+    cout << "  ec:\n"
+         << "    value() is " << ec.value() << '\n'
+         << "    category().name() is " << ec.category().name() << '\n'
+         << "    message() is " <<  ec.message() << '\n'
+         ;
+  }
+
+  bool threw_exception;
+
+}
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cout << "Usage: error_demo path\n";
+    return 1;
+  }
+
+  error_code ec;
+
+  ////  construct path - no error_code
+
+  //try { path p1(argv[1]); }
+  //catch (const system_error& ex)
+  //{
+  //  cout << "construct path without error_code";
+  //  report_system_error(ex);
+  //}
+
+  ////  construct path - with error_code
+
+  path p (argv[1]);
+
+  fs::file_status s;
+  bool            b (false);
+  fs::directory_iterator di;
+
+  //  get status - no error_code
+
+  cout << "\nstatus(\"" << p.string() << "\");\n";
+  threw_exception = false;
+
+  try { s = fs::status(p); }
+  catch (const system_error& ex)
+  {
+    report_filesystem_error(ex);
+    threw_exception = true;
+  }
+  if (!threw_exception)
+    cout << "  Did not throw exception\n";
+  report_status(s);
+
+  //  get status - with error_code
+
+  cout << "\nstatus(\"" << p.string() << "\", ec);\n";
+  s = fs::status(p, ec);
+  report_status(s);
+  report_error_code(ec);
+
+  //  query existence - no error_code
+
+  cout << "\nexists(\"" << p.string() << "\");\n";
+  threw_exception = false;
+
+  try { b = fs::exists(p); }
+  catch (const system_error& ex)
+  {
+    report_filesystem_error(ex);
+    threw_exception = true;
+  }
+  if (!threw_exception)
+  {
+    cout << "  Did not throw exception\n"
+         << "  Returns: " << (b ? "true" : "false") << '\n';
+  }
+
+  //  query existence - with error_code
+
+  //  directory_iterator - no error_code
+
+  cout << "\ndirectory_iterator(\"" << p.string() << "\");\n";
+  threw_exception = false;
+
+  try { di = fs::directory_iterator(p); }
+  catch (const system_error& ex)
+  {
+    report_filesystem_error(ex);
+    threw_exception = true;
+  }
+  if (!threw_exception)
+  {
+    cout << "  Did not throw exception\n"
+      << (di == fs::directory_iterator() ? "  Equal" : "  Not equal")
+      << " to the end iterator\n";
+  }
+
+  //  directory_iterator - with error_code
+
+  cout << "\ndirectory_iterator(\"" << p.string() << "\", ec);\n";
+  di = fs::directory_iterator(p, ec);
+  cout << (di == fs::directory_iterator() ? "  Equal" : "  Not equal")
+       << " to the end iterator\n";
+  report_error_code(ec);
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/file_size.cpp b/src/boost/libs/filesystem/example/file_size.cpp
new file mode 100644
index 00000000..3fbfa4ea
--- /dev/null
+++ b/src/boost/libs/filesystem/example/file_size.cpp
@@ -0,0 +1,44 @@
+//  file_size program  -------------------------------------------------------//
+
+//  Copyright Beman Dawes, 2004
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/filesystem for documentation.
+
+#include <boost/filesystem/operations.hpp>
+#include <iostream>
+
+namespace fs = boost::filesystem;
+
+int main( int argc, char* argv[] )
+{
+
+  if ( argc != 2 )
+  {
+    std::cout << "Usage: file_size path\n";
+    return 1;
+  }
+
+  std::cout << "sizeof(intmax_t) is " << sizeof(boost::intmax_t) << '\n';
+
+  fs::path p( argv[1] );
+
+  if ( !fs::exists( p ) )
+  {
+    std::cout << "not found: " << argv[1] << std::endl;
+    return 1;
+  }
+
+  if ( !fs::is_regular( p ) )
+  {
+    std::cout << "not a regular file: " << argv[1] << std::endl;
+    return 1;
+  }
+ 
+  std::cout << "size of " << argv[1] << " is " << fs::file_size( p )
+    << std::endl;
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/file_status.cpp b/src/boost/libs/filesystem/example/file_status.cpp
new file mode 100644
index 00000000..5d3774fd
--- /dev/null
+++ b/src/boost/libs/filesystem/example/file_status.cpp
@@ -0,0 +1,117 @@
+//  status.cpp  ------------------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2011
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <boost/config.hpp>
+#include <boost/version.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+using std::cout; using std::endl;
+using namespace boost::filesystem;
+
+namespace
+{
+  path p;
+  
+  void print_boost_macros()
+  {
+    std::cout << "Boost "
+              << BOOST_VERSION / 100000 << '.'
+              << BOOST_VERSION / 100 % 1000 << '.'
+              << BOOST_VERSION % 100 << ", "
+#           ifndef _WIN64
+              << BOOST_COMPILER << ", "
+#           else
+              << BOOST_COMPILER << " with _WIN64 defined, "
+#           endif
+              << BOOST_STDLIB << ", "
+              << BOOST_PLATFORM
+              << std::endl;
+  }
+
+  const char* file_type_tab[] = 
+    { "status_error", "file_not_found", "regular_file", "directory_file",
+      "symlink_file", "block_file", "character_file", "fifo_file", "socket_file",
+      "type_unknown"
+    };
+
+  const char* file_type_c_str(enum file_type t)
+  {
+    return file_type_tab[t];
+  }
+
+  void show_status(file_status s, boost::system::error_code ec)
+  {
+    boost::system::error_condition econd;
+
+    if (ec)
+    {
+      econd = ec.default_error_condition();
+      cout << "sets ec to indicate an error:\n"
+           << "   ec.value() is " << ec.value() << '\n'
+           << "   ec.message() is \"" << ec.message() << "\"\n"
+           << "   ec.default_error_condition().value() is " << econd.value() << '\n'
+           << "   ec.default_error_condition().message() is \"" << econd.message() << "\"\n";
+    }
+    else
+      cout << "clears ec.\n";
+
+    cout << "s.type() is " << s.type()
+         << ", which is defined as \"" << file_type_c_str(s.type()) << "\"\n";
+
+    cout << "exists(s) is " << (exists(s) ? "true" : "false") << "\n";
+    cout << "status_known(s) is " << (status_known(s) ? "true" : "false") << "\n";
+    cout << "is_regular_file(s) is " << (is_regular_file(s) ? "true" : "false") << "\n";
+    cout << "is_directory(s) is " << (is_directory(s) ? "true" : "false") << "\n";
+    cout << "is_other(s) is " << (is_other(s) ? "true" : "false") << "\n";
+    cout << "is_symlink(s) is " << (is_symlink(s) ? "true" : "false") << "\n";
+  }
+
+  void try_exists()
+  {
+    cout << "\nexists(" << p << ") ";
+    try
+    {
+      bool result = exists(p);
+      cout << "is " << (result ? "true" : "false") << "\n";
+    }
+    catch (const filesystem_error& ex)
+    {
+      cout << "throws a filesystem_error exception: " << ex.what() << "\n";
+    }
+  }
+
+}
+
+int cpp_main(int argc, char* argv[])
+{
+  print_boost_macros();
+
+  if (argc < 2)
+  {
+    std::cout << "Usage: file_status <path>\n";
+    p = argv[0];
+  }
+  else
+    p = argv[1];
+
+  boost::system::error_code ec;
+  file_status s = status(p, ec);
+  cout << "\nfile_status s = status(" << p << ", ec) ";
+  show_status(s, ec);
+
+  s = symlink_status(p, ec);
+  cout << "\nfile_status s = symlink_status(" << p << ", ec) ";
+  show_status(s, ec);
+
+  try_exists();
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/mbcopy.cpp b/src/boost/libs/filesystem/example/mbcopy.cpp
new file mode 100644
index 00000000..2b1f6038
--- /dev/null
+++ b/src/boost/libs/filesystem/example/mbcopy.cpp
@@ -0,0 +1,90 @@
+//  Boost.Filesystem mbcopy.cpp  ---------------------------------------------//
+
+//  Copyright Beman Dawes 2005
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  Copy the files in a directory, using mbpath to represent the new file names
+//  See http://../doc/path.htm#mbpath for more information
+
+//  See deprecated_test for tests of deprecated features
+#define BOOST_FILESYSTEM_NO_DEPRECATED
+
+#include <boost/filesystem/config.hpp>
+# ifdef BOOST_FILESYSTEM_NARROW_ONLY
+#   error This compiler or standard library does not support wide-character strings or paths
+# endif
+
+#include "mbpath.hpp"
+#include <iostream>
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/fstream.hpp>
+#include "../src/utf8_codecvt_facet.hpp"
+
+namespace fs = boost::filesystem;
+
+namespace
+{
+  // we can't use boost::filesystem::copy_file() because the argument types
+  // differ, so provide a not-very-smart replacement.
+
+  void copy_file( const fs::wpath & from, const user::mbpath & to )
+  {
+    fs::ifstream from_file( from, std::ios_base::in | std::ios_base::binary );
+    if ( !from_file ) { std::cout << "input open failed\n"; return; }
+
+    fs::ofstream to_file( to, std::ios_base::out | std::ios_base::binary );
+    if ( !to_file ) { std::cout << "output open failed\n"; return; }
+
+    char c;
+    while ( from_file.get(c) )
+    {
+      to_file.put(c);
+      if ( to_file.fail() ) { std::cout << "write error\n"; return; }
+    }
+
+    if ( !from_file.eof() ) { std::cout << "read error\n"; }
+  }
+}
+
+int main( int argc, char * argv[] )
+{
+  if ( argc != 2 )
+  {
+    std::cout << "Copy files in the current directory to a target directory\n"
+              << "Usage: mbcopy <target-dir>\n";
+    return 1;
+  }
+
+  // For encoding, use Boost UTF-8 codecvt
+  std::locale global_loc = std::locale();
+  std::locale loc( global_loc, new fs::detail::utf8_codecvt_facet );
+  user::mbpath_traits::imbue( loc );
+
+  std::string target_string( argv[1] );
+  user::mbpath target_dir( user::mbpath_traits::to_internal( target_string ) );
+
+  if ( !fs::is_directory( target_dir ) )
+  {
+    std::cout << "Error: " << argv[1] << " is not a directory\n";
+    return 1;
+  }
+
+  for ( fs::wdirectory_iterator it( L"." );
+    it != fs::wdirectory_iterator(); ++it )
+  {
+    if ( fs::is_regular_file(it->status()) )
+    {
+      copy_file( *it, target_dir / it->path().filename() );
+    }
+  }
+
+  return 0;
+}
+
+
+
+
+
diff --git a/src/boost/libs/filesystem/example/mbpath.cpp b/src/boost/libs/filesystem/example/mbpath.cpp
new file mode 100644
index 00000000..43590010
--- /dev/null
+++ b/src/boost/libs/filesystem/example/mbpath.cpp
@@ -0,0 +1,80 @@
+//  Boost.Filesystem mbpath.cpp  ---------------------------------------------//
+
+//  (c) Copyright Beman Dawes 2005
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See Boost.Filesystem home page at http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem/config.hpp>
+# ifdef BOOST_FILESYSTEM_NARROW_ONLY
+#   error This compiler or standard library does not support wide-character strings or paths
+# endif
+
+#include "mbpath.hpp"
+#include <boost/system/system_error.hpp>
+#include <boost/scoped_array.hpp>
+
+namespace fs = boost::filesystem;
+
+namespace
+{
+  // ISO C calls this "the locale-specific native environment":
+  std::locale loc("");
+
+  const std::codecvt<wchar_t, char, std::mbstate_t> *
+    cvt( &std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t> >
+           ( loc ) );
+}
+
+namespace user
+{
+  mbpath_traits::external_string_type
+  mbpath_traits::to_external( const mbpath & ph,
+    const internal_string_type & src )
+  {
+    std::size_t work_size( cvt->max_length() * (src.size()+1) );
+    boost::scoped_array<char> work( new char[ work_size ] );
+    std::mbstate_t state;
+    const internal_string_type::value_type * from_next;
+    external_string_type::value_type * to_next;
+    if ( cvt->out( 
+      state, src.c_str(), src.c_str()+src.size(), from_next, work.get(),
+      work.get()+work_size, to_next ) != std::codecvt_base::ok )
+      boost::throw_exception<fs::basic_filesystem_error<mbpath> >(
+        fs::basic_filesystem_error<mbpath>(
+          "user::mbpath::to_external conversion error",
+          ph, boost::system::error_code( EINVAL, boost::system::errno_ecat ) ) );
+    *to_next = '\0';
+    return external_string_type( work.get() );
+  }
+
+  mbpath_traits::internal_string_type 
+  mbpath_traits::to_internal( const external_string_type & src )
+  {
+      std::size_t work_size( src.size()+1 );
+      boost::scoped_array<wchar_t> work( new wchar_t[ work_size ] );
+      std::mbstate_t state;
+      const external_string_type::value_type * from_next;
+      internal_string_type::value_type * to_next;
+      if ( cvt->in( 
+        state, src.c_str(), src.c_str()+src.size(), from_next, work.get(),
+        work.get()+work_size, to_next ) != std::codecvt_base::ok )
+        boost::throw_exception<fs::basic_filesystem_error<mbpath> >(
+          fs::basic_filesystem_error<mbpath>(
+            "user::mbpath::to_internal conversion error",
+            boost::system::error_code( EINVAL, boost::system::errno_ecat ) ) );
+      *to_next = L'\0';
+      return internal_string_type( work.get() );
+  }
+
+  void mbpath_traits::imbue( const std::locale & new_loc )
+  {
+    loc = new_loc;
+    cvt = &std::use_facet
+      <std::codecvt<wchar_t, char, std::mbstate_t> >( loc );
+  }
+
+} // namespace user
diff --git a/src/boost/libs/filesystem/example/mbpath.hpp b/src/boost/libs/filesystem/example/mbpath.hpp
new file mode 100644
index 00000000..f752b3fd
--- /dev/null
+++ b/src/boost/libs/filesystem/example/mbpath.hpp
@@ -0,0 +1,44 @@
+//  Boost.Filesystem mbpath.hpp  ---------------------------------------------//
+
+//  Copyright Beman Dawes 2005
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  Encodes wide character paths as MBCS
+//  See http://../doc/path.htm#mbpath for more information
+
+#include <boost/filesystem/path.hpp>
+#include <cwchar>     // for std::mbstate_t
+#include <string>
+#include <locale>
+
+namespace user
+{
+  struct mbpath_traits;
+  
+  typedef boost::filesystem::basic_path<std::wstring, mbpath_traits> mbpath;
+
+  struct mbpath_traits
+  {
+    typedef std::wstring internal_string_type;
+    typedef std::string external_string_type;
+
+    static external_string_type to_external( const mbpath & ph,
+      const internal_string_type & src );
+
+    static internal_string_type to_internal( const external_string_type & src );
+
+    static void imbue( const std::locale & loc );
+  };
+} // namespace user
+
+namespace boost
+{
+  namespace filesystem
+  {
+    template<> struct is_basic_path<user::mbpath>
+      { static const bool value = true; };
+  }
+}
diff --git a/src/boost/libs/filesystem/example/msvc/common.props b/src/boost/libs/filesystem/example/msvc/common.props
new file mode 100644
index 00000000..527c3c8a
--- /dev/null
+++ b/src/boost/libs/filesystem/example/msvc/common.props
@@ -0,0 +1,15 @@
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+  <ItemGroup />
+</Project>
+\ No newline at end of file
diff --git a/src/boost/libs/filesystem/example/msvc/directory_symlink_parent_resolution/directory_symlink_parent_resolution.vcxproj b/src/boost/libs/filesystem/example/msvc/directory_symlink_parent_resolution/directory_symlink_parent_resolution.vcxproj
new file mode 100644
index 00000000..243e4d68
--- /dev/null
+++ b/src/boost/libs/filesystem/example/msvc/directory_symlink_parent_resolution/directory_symlink_parent_resolution.vcxproj
@@ -0,0 +1,170 @@
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new file mode 100644
index 00000000..e41ee55a
--- /dev/null
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@@ -0,0 +1,88 @@
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diff --git a/src/boost/libs/filesystem/example/path_info.cpp b/src/boost/libs/filesystem/example/path_info.cpp
new file mode 100644
index 00000000..42e4bdfb
--- /dev/null
+++ b/src/boost/libs/filesystem/example/path_info.cpp
@@ -0,0 +1,82 @@
+//  path_info.cpp  ---------------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <boost/filesystem.hpp>
+using namespace std;
+using namespace boost::filesystem;
+
+const char * say_what(bool b) { return b ? "true" : "false"; }
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cout << "Usage: path_info path-element [path-element...]\n"
+            "Composes a path via operator/= from one or more path-element arguments\n"
+            "Example: path_info foo/bar baz\n"
+#            ifdef BOOST_POSIX_API
+            "         would report info about the composed path foo/bar/baz\n";
+#            else  // BOOST_WINDOWS_API
+            "         would report info about the composed path foo/bar\\baz\n";
+#            endif
+    return 1;
+  }
+
+  path p;
+  for (; argc > 1; --argc, ++argv)
+    p /= argv[1];  // compose path p from the command line arguments
+
+  cout  <<  "\ncomposed path:\n";
+  cout  <<  "  operator<<()---------: " << p << "\n";
+  cout  <<  "  make_preferred()-----: " << p.make_preferred() << "\n";
+
+  cout << "\nelements:\n";
+  for (auto element : p)
+    cout << "  " << element << '\n';
+
+  cout  <<  "\nobservers, native format:" << endl;
+# ifdef BOOST_POSIX_API
+  cout  <<  "  native()-------------: " << p.native() << endl;
+  cout  <<  "  c_str()--------------: " << p.c_str() << endl;
+# else  // BOOST_WINDOWS_API
+  wcout << L"  native()-------------: " << p.native() << endl;
+  wcout << L"  c_str()--------------: " << p.c_str() << endl;
+# endif
+  cout  <<  "  string()-------------: " << p.string() << endl;
+  wcout << L"  wstring()------------: " << p.wstring() << endl;
+
+  cout  <<  "\nobservers, generic format:\n";
+  cout  <<  "  generic_string()-----: " << p.generic_string() << endl;
+  wcout << L"  generic_wstring()----: " << p.generic_wstring() << endl;
+
+  cout  <<  "\ndecomposition:\n";
+  cout  <<  "  root_name()----------: " << p.root_name() << '\n';
+  cout  <<  "  root_directory()-----: " << p.root_directory() << '\n';
+  cout  <<  "  root_path()----------: " << p.root_path() << '\n';
+  cout  <<  "  relative_path()------: " << p.relative_path() << '\n';
+  cout  <<  "  parent_path()--------: " << p.parent_path() << '\n';
+  cout  <<  "  filename()-----------: " << p.filename() << '\n';
+  cout  <<  "  stem()---------------: " << p.stem() << '\n';
+  cout  <<  "  extension()----------: " << p.extension() << '\n';
+
+  cout  <<  "\nquery:\n";
+  cout  <<  "  empty()--------------: " << say_what(p.empty()) << '\n';
+  cout  <<  "  is_absolute()--------: " << say_what(p.is_absolute()) << '\n';
+  cout  <<  "  has_root_name()------: " << say_what(p.has_root_name()) << '\n';
+  cout  <<  "  has_root_directory()-: " << say_what(p.has_root_directory()) << '\n';
+  cout  <<  "  has_root_path()------: " << say_what(p.has_root_path()) << '\n';
+  cout  <<  "  has_relative_path()--: " << say_what(p.has_relative_path()) << '\n';
+  cout  <<  "  has_parent_path()----: " << say_what(p.has_parent_path()) << '\n';
+  cout  <<  "  has_filename()-------: " << say_what(p.has_filename()) << '\n';
+  cout  <<  "  has_stem()-----------: " << say_what(p.has_stem()) << '\n';
+  cout  <<  "  has_extension()------: " << say_what(p.has_extension()) << '\n';
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/simple_ls.cpp b/src/boost/libs/filesystem/example/simple_ls.cpp
new file mode 100644
index 00000000..c914a51e
--- /dev/null
+++ b/src/boost/libs/filesystem/example/simple_ls.cpp
@@ -0,0 +1,92 @@
+//  simple_ls program  -------------------------------------------------------//
+
+//  Copyright Jeff Garland and Beman Dawes, 2002
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/filesystem for documentation.
+
+#define BOOST_FILESYSTEM_VERSION 3
+
+//  As an example program, we don't want to use any deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED 
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED 
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/directory.hpp>
+#include <boost/filesystem/path.hpp>
+#include <iostream>
+
+namespace fs = boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  fs::path p(fs::current_path());
+
+  if (argc > 1)
+    p = fs::system_complete(argv[1]);
+  else
+    std::cout << "\nusage:   simple_ls [path]" << std::endl;
+
+  unsigned long file_count = 0;
+  unsigned long dir_count = 0;
+  unsigned long other_count = 0;
+  unsigned long err_count = 0;
+
+  if (!fs::exists(p))
+  {
+    std::cout << "\nNot found: " << p << std::endl;
+    return 1;
+  }
+
+  if (fs::is_directory(p))
+  {
+    std::cout << "\nIn directory: " << p << "\n\n";
+    fs::directory_iterator end_iter;
+    for (fs::directory_iterator dir_itr(p);
+          dir_itr != end_iter;
+          ++dir_itr)
+    {
+      try
+      {
+        if (fs::is_directory(dir_itr->status()))
+        {
+          ++dir_count;
+          std::cout << dir_itr->path().filename() << " [directory]\n";
+        }
+        else if (fs::is_regular_file(dir_itr->status()))
+        {
+          ++file_count;
+          std::cout << dir_itr->path().filename() << "\n";
+        }
+        else
+        {
+          ++other_count;
+          std::cout << dir_itr->path().filename() << " [other]\n";
+        }
+
+      }
+      catch (const std::exception & ex)
+      {
+        ++err_count;
+        std::cout << dir_itr->path().filename() << " " << ex.what() << std::endl;
+      }
+    }
+    std::cout << "\n" << file_count << " files\n"
+              << dir_count << " directories\n"
+              << other_count << " others\n"
+              << err_count << " errors\n";
+  }
+  else // must be a file
+  {
+    std::cout << "\nFound: " << p << "\n";
+  }
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/stems.cpp b/src/boost/libs/filesystem/example/stems.cpp
new file mode 100644
index 00000000..3699fa81
--- /dev/null
+++ b/src/boost/libs/filesystem/example/stems.cpp
@@ -0,0 +1,31 @@
+//  filesystem example stems.cpp  ------------------------------------------------------//
+
+//  Copyright Beman Dawes 2011
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem.hpp>
+#include <iostream>
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    std::cout << "Usage: stems <path>\n";
+    return 1;
+  }
+
+  boost::filesystem::path p(argv[1]), name(p.filename());
+
+  for(;;)
+  {
+    std::cout << "filename " << name  << " has stem " << name.stem()
+      << " and extension " << name.extension() << "\n";
+    if (name.stem().empty() || name.extension().empty())
+      return 0;
+    name = name.stem();
+  }
+}
diff --git a/src/boost/libs/filesystem/example/tchar.cpp b/src/boost/libs/filesystem/example/tchar.cpp
new file mode 100644
index 00000000..5f33d69e
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tchar.cpp
@@ -0,0 +1,39 @@
+//  Example use of Microsoft TCHAR  ----------------------------------------------------//
+
+//  Copyright Beman Dawes 2008
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem/operations.hpp>
+#include <string>
+#include <cassert>
+#include <windows.h>
+#include <winnt.h>
+
+namespace fs = boost::filesystem;
+
+typedef std::basic_string<TCHAR> tstring;
+
+void func( const fs::path & p )
+{
+  assert( fs::exists( p ) );
+}
+
+int main()
+{
+  // get a path that is known to exist
+  fs::path cp = fs::current_path(); 
+
+  // demo: get tstring from the path
+  tstring cp_as_tstring = cp.string<tstring>();
+
+  // demo: pass tstring to filesystem function taking path
+  assert( fs::exists( cp_as_tstring ) );
+
+  // demo: pass tstring to user function taking path
+  func( cp_as_tstring );
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/test/Jamfile.v2 b/src/boost/libs/filesystem/example/test/Jamfile.v2
new file mode 100644
index 00000000..22a16325
--- /dev/null
+++ b/src/boost/libs/filesystem/example/test/Jamfile.v2
@@ -0,0 +1,29 @@
+# Boost Filesystem Library Tutorial Jamfile
+ 
+# (C) Copyright Beman Dawes 2010
+# (C) Copyright Vladimir Prus 2003
+
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+
+# Library home page: http://www.boost.org/libs/filesystem
+
+project
+    : requirements
+      <library>/boost/filesystem//boost_filesystem
+    ;
+
+exe tut1 : tut1.cpp ;
+exe tut2 : tut2.cpp ;
+exe tut3 : tut3.cpp ;
+exe tut4 : tut4.cpp ;
+exe tut5 : tut5.cpp ;
+exe path_info : path_info.cpp ;
+
+install tut1-copy : tut1 : <location>. ;
+install tut2-copy : tut2 : <location>. ;
+install tut3-copy : tut3 : <location>. ;
+install tut4-copy : tut4 : <location>. ;
+install tut5-copy : tut5 : <location>. ;
+install path_info-copy : path_info : <location>. ;
+  
diff --git a/src/boost/libs/filesystem/example/test/build.bat b/src/boost/libs/filesystem/example/test/build.bat
new file mode 100644
index 00000000..1921ca1c
--- /dev/null
+++ b/src/boost/libs/filesystem/example/test/build.bat
@@ -0,0 +1,7 @@
+@echo off
+rem Copyright Beman Dawes, 2010
+rem Distributed under the Boost Software License, Version 1.0.
+rem See www.boost.org/LICENSE_1_0.txt
+echo Compiling example programs...
+b2 %* >b2.log
+find "error" <b2.log
diff --git a/src/boost/libs/filesystem/example/test/build.sh b/src/boost/libs/filesystem/example/test/build.sh
new file mode 100755
index 00000000..19b1a788
--- /dev/null
+++ b/src/boost/libs/filesystem/example/test/build.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+# Copyright Beman Dawes, 2010
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+echo Compiling example programs...
+b2 $* >b2.log
+grep "error" <b2.log
diff --git a/src/boost/libs/filesystem/example/test/setup.bat b/src/boost/libs/filesystem/example/test/setup.bat
new file mode 100644
index 00000000..59822a51
--- /dev/null
+++ b/src/boost/libs/filesystem/example/test/setup.bat
@@ -0,0 +1,13 @@
+@echo off
+rem Copyright Beman Dawes, 2010
+rem Distributed under the Boost Software License, Version 1.0.
+rem See www.boost.org/LICENSE_1_0.txt
+echo Copying example programs...
+copy /y ..\tut1.cpp >nul
+copy /y ..\tut2.cpp >nul
+copy /y ..\tut3.cpp >nul
+copy /y ..\tut4.cpp >nul
+copy /y ..\tut5.cpp >nul
+copy /y ..\path_info.cpp >nul
+del *.exe 2>nul
+del *.pdb 2>nul
diff --git a/src/boost/libs/filesystem/example/test/setup.sh b/src/boost/libs/filesystem/example/test/setup.sh
new file mode 100755
index 00000000..cb1ba684
--- /dev/null
+++ b/src/boost/libs/filesystem/example/test/setup.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+# Copyright Beman Dawes, 2010
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+echo Copying example programs...
+cp ../tut1.cpp .
+cp ../tut2.cpp .
+cp ../tut3.cpp .
+cp ../tut4.cpp .
+cp ../tut5.cpp .
+cp ../path_info.cpp .
+rm tut1 2>~/junk
+rm tut2 2>~/junk
+rm tut3 2>~/junk
+rm tut4 2>~/junk
+rm tut5 2>~/junk
+rm path_info 2>~/junk
+
diff --git a/src/boost/libs/filesystem/example/tut0.cpp b/src/boost/libs/filesystem/example/tut0.cpp
new file mode 100644
index 00000000..3e294c02
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut0.cpp
@@ -0,0 +1,23 @@
+//  filesystem tut0.cpp  ---------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <boost/filesystem.hpp>
+namespace fs = boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    std::cout << "Usage: tut0 path\n";
+    return 1;
+  }
+  std::cout << argv[1] << '\n';
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/tut1.cpp b/src/boost/libs/filesystem/example/tut1.cpp
new file mode 100644
index 00000000..3ac85b90
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut1.cpp
@@ -0,0 +1,23 @@
+//  filesystem tut1.cpp  ---------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <boost/filesystem.hpp>
+using namespace boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    std::cout << "Usage: tut1 path\n";
+    return 1;
+  }
+  std::cout << argv[1] << " " << file_size(argv[1]) << '\n';
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/tut2.cpp b/src/boost/libs/filesystem/example/tut2.cpp
new file mode 100644
index 00000000..147dc3d8
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut2.cpp
@@ -0,0 +1,40 @@
+//  filesystem tut2.cpp  ---------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <boost/filesystem.hpp>
+using namespace std;
+using namespace boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cout << "Usage: tut2 path\n";
+    return 1;
+  }
+
+  path p(argv[1]);  // avoid repeated path construction below
+
+  if (exists(p))    // does path p actually exist?
+  {
+    if (is_regular_file(p))        // is path p a regular file?
+      cout << p << " size is " << file_size(p) << '\n';
+
+    else if (is_directory(p))      // is path p a directory?
+      cout << p << " is a directory\n";
+
+    else
+      cout << p << " exists, but is not a regular file or directory\n";
+  }
+  else
+    cout << p << " does not exist\n";
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/tut3.cpp b/src/boost/libs/filesystem/example/tut3.cpp
new file mode 100644
index 00000000..f930e101
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut3.cpp
@@ -0,0 +1,52 @@
+//  filesystem tut3.cpp  ---------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <boost/filesystem.hpp>
+using std::cout;
+using namespace boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cout << "Usage: tut3 path\n";
+    return 1;
+  }
+
+  path p (argv[1]);
+
+  try
+  {
+    if (exists(p))
+    {
+      if (is_regular_file(p))
+        cout << p << " size is " << file_size(p) << '\n';
+
+      else if (is_directory(p))
+      {
+        cout << p << " is a directory containing:\n";
+
+        for (const directory_entry& x : directory_iterator(p))
+          cout << "    " << x.path() << '\n'; 
+      }
+      else
+        cout << p << " exists, but is not a regular file or directory\n";
+    }
+    else
+      cout << p << " does not exist\n";
+  }
+
+  catch (const filesystem_error& ex)
+  {
+    cout << ex.what() << '\n';
+  }
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/tut4.cpp b/src/boost/libs/filesystem/example/tut4.cpp
new file mode 100644
index 00000000..513a5e62
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut4.cpp
@@ -0,0 +1,61 @@
+//  filesystem tut4.cpp  ---------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <vector>
+#include <algorithm>
+#include <boost/filesystem.hpp>
+using std::cout;
+using namespace boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cout << "Usage: tut4 path\n";
+    return 1;
+  }
+
+  path p (argv[1]);
+
+  try
+  {
+    if (exists(p))
+    {
+      if (is_regular_file(p))
+        cout << p << " size is " << file_size(p) << '\n';
+
+      else if (is_directory(p))
+      {
+        cout << p << " is a directory containing:\n";
+
+        std::vector<path> v;
+
+        for (auto&& x : directory_iterator(p))
+          v.push_back(x.path()); 
+
+        std::sort(v.begin(), v.end());  
+
+        for (auto&& x : v)
+          cout << "    " << x.filename() << '\n';
+      }
+      else
+        cout << p << " exists, but is not a regular file or directory\n";
+    }
+    else
+      cout << p << " does not exist\n";
+  }
+
+  catch (const filesystem_error& ex)
+  {
+    cout << ex.what() << '\n';
+  }
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/tut5.cpp b/src/boost/libs/filesystem/example/tut5.cpp
new file mode 100644
index 00000000..d665b0db
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut5.cpp
@@ -0,0 +1,52 @@
+//  filesystem tut5.cpp  ---------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem/fstream.hpp>
+#include <string>
+#include <list>
+namespace fs = boost::filesystem;
+
+int main()
+{
+  // \u263A is "Unicode WHITE SMILING FACE = have a nice day!"
+  std::string narrow_string ("smile2");
+  std::wstring wide_string (L"smile2\u263A");
+  std::list<char> narrow_list;
+  narrow_list.push_back('s');
+  narrow_list.push_back('m');
+  narrow_list.push_back('i');
+  narrow_list.push_back('l');
+  narrow_list.push_back('e');
+  narrow_list.push_back('3');
+  std::list<wchar_t> wide_list;
+  wide_list.push_back(L's');
+  wide_list.push_back(L'm');
+  wide_list.push_back(L'i');
+  wide_list.push_back(L'l');
+  wide_list.push_back(L'e');
+  wide_list.push_back(L'3');
+  wide_list.push_back(L'\u263A');
+
+  { fs::ofstream f("smile"); }
+  { fs::ofstream f(L"smile\u263A"); }
+  { fs::ofstream f(narrow_string); }
+  { fs::ofstream f(wide_string); }
+  { fs::ofstream f(narrow_list); }
+  { fs::ofstream f(wide_list); }
+  narrow_list.pop_back();
+  narrow_list.push_back('4');
+  wide_list.pop_back();
+  wide_list.pop_back();
+  wide_list.push_back(L'4');
+  wide_list.push_back(L'\u263A');
+  { fs::ofstream f(fs::path(narrow_list.begin(), narrow_list.end())); }
+  { fs::ofstream f(fs::path(wide_list.begin(), wide_list.end())); }
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/example/tut6a.cpp b/src/boost/libs/filesystem/example/tut6a.cpp
new file mode 100644
index 00000000..f579a427
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut6a.cpp
@@ -0,0 +1,48 @@
+//  filesystem tut6a.cpp  --------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <exception>
+#include <boost/filesystem.hpp>
+using namespace boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    std::cout << "Usage: tut6a path\n";
+    return 1;
+  }
+
+  try
+  {
+    for (recursive_directory_iterator it (argv[1]);
+         it != recursive_directory_iterator();
+         ++it)
+    {
+      if (it.level() > 1)
+        it.pop();
+      else
+      {
+        for (int i = 0; i <= it.level(); ++i)
+          std::cout << "  ";
+
+        std::cout << it->path() << '\n';
+      }
+    }
+  }
+  
+  catch (const std::exception& ex)
+  {
+    std::cout << "************* exception *****************\n";
+    std::cout << ex.what() << '\n';
+  }
+
+  return 0;
+}  
diff --git a/src/boost/libs/filesystem/example/tut6b.cpp b/src/boost/libs/filesystem/example/tut6b.cpp
new file mode 100644
index 00000000..90f54efc
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut6b.cpp
@@ -0,0 +1,50 @@
+//  filesystem tut6b.cpp  --------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <exception>
+#include <boost/filesystem.hpp>
+using namespace boost::filesystem;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    std::cout << "Usage: tut6b path\n";
+    return 1;
+  }
+
+  try
+  {
+    for (recursive_directory_iterator it (argv[1]);
+         it != recursive_directory_iterator();
+        )
+    {
+      for (int i = 0; i <= it.level(); ++i)
+        std::cout << "  ";
+
+      std::cout << it->path() << '\n';
+
+      try { ++it; }
+      catch (const filesystem_error& ex)
+      {
+        std::cout << "************* filesystem_error *****************\n";
+        std::cout << ex.what() << '\n';
+      }
+    }
+  }
+  
+  catch (const std::exception& ex)
+  {
+    std::cout << "************* exception *****************\n";
+    std::cout << ex.what() << '\n';
+  }
+
+  return 0;
+}  
diff --git a/src/boost/libs/filesystem/example/tut6c.cpp b/src/boost/libs/filesystem/example/tut6c.cpp
new file mode 100644
index 00000000..2b73f774
--- /dev/null
+++ b/src/boost/libs/filesystem/example/tut6c.cpp
@@ -0,0 +1,40 @@
+//  filesystem tut6c.cpp  --------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <iostream>
+#include <exception>
+#include <boost/filesystem.hpp>
+#include <boost/system/error_code.hpp>
+
+using namespace boost::filesystem;
+using namespace boost::system;
+
+int main(int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    std::cout << "Usage: tut6c path\n";
+    return 1;
+  }
+
+  error_code ec;
+  for (recursive_directory_iterator it (argv[1], ec);
+        it != recursive_directory_iterator();
+      )
+  {
+    for (int i = 0; i <= it.level(); ++i)
+      std::cout << "  ";
+
+    std::cout << it->path() << '\n';
+
+    it.increment(ec);
+  }
+
+  return 0;
+}  
diff --git a/src/boost/libs/filesystem/index.html b/src/boost/libs/filesystem/index.html
new file mode 100644
index 00000000..1803c23c
--- /dev/null
+++ b/src/boost/libs/filesystem/index.html
@@ -0,0 +1,13 @@
+<html>
+<head>
+<meta http-equiv="refresh" content="0; URL=doc/index.htm">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="doc/index.htm">doc/index.htm</a>.
+<hr>
+<p>&copy; Copyright Beman Dawes, 2003</p>
+<p> Distributed under the Boost Software License, Version 1.0.
+See http://www.boost.org/LICENSE_1_0.txt</p>
+</body>
+</html>
diff --git a/src/boost/libs/filesystem/meta/libraries.json b/src/boost/libs/filesystem/meta/libraries.json
new file mode 100644
index 00000000..25cfa5ff
--- /dev/null
+++ b/src/boost/libs/filesystem/meta/libraries.json
@@ -0,0 +1,15 @@
+{
+    "key": "filesystem",
+    "name": "Filesystem",
+    "authors": [
+        "Beman Dawes"
+    ],
+    "description": "The Boost Filesystem Library provides portable facilities to query and manipulate paths, files, and directories.",
+    "category": [
+        "System"
+    ],
+    "maintainers": [
+        "Beman Dawes <bdawes -at- acm.org>",
+        "Andrey Semashev <andrey.semashev -at- gmail.com>"
+    ]
+}
diff --git a/src/boost/libs/filesystem/src/codecvt_error_category.cpp b/src/boost/libs/filesystem/src/codecvt_error_category.cpp
new file mode 100644
index 00000000..c8d1cca4
--- /dev/null
+++ b/src/boost/libs/filesystem/src/codecvt_error_category.cpp
@@ -0,0 +1,80 @@
+//  codecvt_error_category implementation file  ----------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt)
+
+//  Library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#include <boost/config/warning_disable.hpp>
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/path_traits.hpp>
+#include <boost/system/error_code.hpp>
+#include <locale>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+//--------------------------------------------------------------------------------------//
+
+namespace
+{
+  class codecvt_error_cat : public boost::system::error_category
+  {
+  public:
+    codecvt_error_cat(){}
+    const char*   name() const BOOST_SYSTEM_NOEXCEPT;
+    std::string    message(int ev) const;
+  };
+
+  const char* codecvt_error_cat::name() const BOOST_SYSTEM_NOEXCEPT
+  {
+    return "codecvt";
+  }
+
+  std::string codecvt_error_cat::message(int ev) const
+  {
+    std::string str;
+    switch (ev)
+    {
+    case std::codecvt_base::ok:
+      str = "ok";
+      break;
+    case std::codecvt_base::partial:
+      str = "partial";
+      break;
+    case std::codecvt_base::error:
+      str = "error";
+      break;
+    case std::codecvt_base::noconv:
+      str = "noconv";
+      break;
+    default:
+      str = "unknown error";
+    }
+    return str;
+  }
+
+} // unnamed namespace
+
+namespace boost
+{
+  namespace filesystem
+  {
+
+    BOOST_FILESYSTEM_DECL const boost::system::error_category& codecvt_error_category()
+    {
+      static const codecvt_error_cat  codecvt_error_cat_const;
+      return codecvt_error_cat_const;
+    }
+
+  } // namespace filesystem
+} // namespace boost
diff --git a/src/boost/libs/filesystem/src/directory.cpp b/src/boost/libs/filesystem/src/directory.cpp
new file mode 100644
index 00000000..438b722e
--- /dev/null
+++ b/src/boost/libs/filesystem/src/directory.cpp
@@ -0,0 +1,887 @@
+//  operations.cpp  --------------------------------------------------------------------//
+
+//  Copyright 2002-2009, 2014 Beman Dawes
+//  Copyright 2001 Dietmar Kuehl
+//  Copyright 2019 Andrey Semashev
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS  // Sun readdir_r() needs this
+#endif
+
+// Include Boost.Predef first so that windows.h is guaranteed to be not included
+#include <boost/predef/os/windows.h>
+#if BOOST_OS_WINDOWS
+#include <boost/winapi/config.hpp>
+#endif
+
+#include <boost/filesystem/directory.hpp>
+#include <boost/filesystem/exception.hpp>
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/file_status.hpp>
+
+#include <cstddef>
+#include <cerrno>
+#include <cstring>
+#include <cstdlib> // std::malloc, std::free
+#include <new> // std::nothrow, std::bad_alloc
+#include <limits>
+#include <string>
+#include <utility> // std::move
+#include <boost/assert.hpp>
+#include <boost/system/error_code.hpp>
+#include <boost/smart_ptr/intrusive_ptr.hpp>
+
+#ifdef BOOST_POSIX_API
+
+#include <dirent.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS+0 >= 0)\
+  && defined(_SC_THREAD_SAFE_FUNCTIONS)\
+  && !defined(__CYGWIN__)\
+  && !(defined(linux) || defined(__linux) || defined(__linux__))\
+  && !defined(__ANDROID__)\
+  && (!defined(__hpux) || defined(_REENTRANT)) \
+  && (!defined(_AIX) || defined(__THREAD_SAFE))
+#define BOOST_FILESYSTEM_USE_READDIR_R
+#endif
+
+#else // BOOST_WINDOWS_API
+
+#include <cwchar>
+#include <windows.h>
+
+#include "windows_tools.hpp"
+
+#endif  // BOOST_WINDOWS_API
+
+#include "error_handling.hpp"
+
+//  BOOST_FILESYSTEM_STATUS_CACHE enables file_status cache in
+//  dir_itr_increment. The config tests are placed here because some of the
+//  macros being tested come from dirent.h.
+//
+// TODO: find out what macros indicate dirent::d_type present in more libraries
+#if defined(BOOST_WINDOWS_API)\
+  || defined(_DIRENT_HAVE_D_TYPE)// defined by GNU C library if d_type present
+#define BOOST_FILESYSTEM_STATUS_CACHE
+#endif
+
+namespace fs = boost::filesystem;
+using boost::system::error_code;
+using boost::system::system_category;
+
+namespace boost {
+namespace filesystem {
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                 directory_entry                                      //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+BOOST_FILESYSTEM_DECL
+file_status directory_entry::get_status(system::error_code* ec) const
+{
+  if (!status_known(m_status))
+  {
+    // optimization: if the symlink status is known, and it isn't a symlink,
+    // then status and symlink_status are identical so just copy the
+    // symlink status to the regular status.
+    if (status_known(m_symlink_status) && !is_symlink(m_symlink_status))
+    {
+      m_status = m_symlink_status;
+      if (ec != 0)
+        ec->clear();
+    }
+    else
+    {
+      m_status = detail::status(m_path, ec);
+    }
+  }
+  else if (ec != 0)
+  {
+    ec->clear();
+  }
+
+  return m_status;
+}
+
+BOOST_FILESYSTEM_DECL
+file_status directory_entry::get_symlink_status(system::error_code* ec) const
+{
+  if (!status_known(m_symlink_status))
+    m_symlink_status = detail::symlink_status(m_path, ec);
+  else if (ec != 0)
+    ec->clear();
+
+  return m_symlink_status;
+}
+
+//  dispatch directory_entry supplied here rather than in
+//  <boost/filesystem/path_traits.hpp>, thus avoiding header circularity.
+//  test cases are in operations_unit_test.cpp
+
+namespace path_traits {
+
+void dispatch(const directory_entry& de,
+#ifdef BOOST_WINDOWS_API
+  std::wstring& to,
+#else
+  std::string& to,
+#endif
+  const codecvt_type&)
+{
+  to = de.path().native();
+}
+
+void dispatch(const directory_entry& de,
+#ifdef BOOST_WINDOWS_API
+  std::wstring& to
+#else
+  std::string& to
+#endif
+  )
+{
+  to = de.path().native();
+}
+
+} // namespace path_traits
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                               directory_iterator                                     //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+namespace detail {
+
+namespace {
+
+#ifdef BOOST_POSIX_API
+
+#if defined(BOOST_FILESYSTEM_USE_READDIR_R)
+
+// Obtains maximum length of a path, not including the terminating zero
+inline std::size_t get_path_max()
+{
+  // this code is based on Stevens and Rago, Advanced Programming in the
+  // UNIX envirnment, 2nd Ed., ISBN 0-201-43307-9, page 49
+  std::size_t max = 0;
+  errno = 0;
+  long res = ::pathconf("/", _PC_PATH_MAX);
+  if (res < 0)
+  {
+#if defined(PATH_MAX)
+    max = PATH_MAX;
+#else
+    max = 4096;
+#endif
+  }
+  else
+  {
+    max = static_cast< std::size_t >(res); // relative root
+#if defined(PATH_MAX)
+    if (max < PATH_MAX)
+      max = PATH_MAX;
+#endif
+  }
+
+  if ((max + 1) < sizeof(dirent().d_name))
+    max = sizeof(dirent().d_name) - 1;
+
+  return max;
+}
+
+// Returns maximum length of a path, not including the terminating zero
+inline std::size_t path_max()
+{
+  static const std::size_t max = get_path_max();
+  return max;
+}
+
+#endif // BOOST_FILESYSTEM_USE_READDIR_R
+
+error_code dir_itr_first(void*& handle, void*& buffer,
+  const char* dir, std::string& target,
+  fs::file_status&, fs::file_status&)
+{
+  if ((handle = ::opendir(dir)) == 0)
+  {
+    const int err = errno;
+    return error_code(err, system_category());
+  }
+  target.assign(".");  // string was static but caused trouble
+                       // when iteration called from dtor, after
+                       // static had already been destroyed
+  return error_code();
+}
+
+// *result set to NULL on end of directory
+inline int readdir_r_simulator(DIR* dirp, void*& buffer, struct dirent** result)
+{
+#if defined(BOOST_FILESYSTEM_USE_READDIR_R)
+  errno = 0;
+
+  if (::sysconf(_SC_THREAD_SAFE_FUNCTIONS) >= 0)
+  {
+    struct dirent* storage = static_cast< struct dirent* >(buffer);
+    if (BOOST_UNLIKELY(!storage))
+    {
+      // According to readdir description, there's no reliable way to predict the length of the d_name string.
+      // It may exceed NAME_MAX and pathconf(_PC_NAME_MAX) limits. We are being conservative here and allocate
+      // buffer that is enough for PATH_MAX as the directory name. Still, this doesn't guarantee there won't be
+      // a buffer overrun. The readdir_r API is fundamentally flawed and we should avoid it as much as possible
+      // in favor of readdir.
+      const std::size_t name_size = path_max();
+      const std::size_t buffer_size = (sizeof(dirent) - sizeof(dirent().d_name)) + name_size + 1; // + 1 for "\0"
+      buffer = storage = static_cast< struct dirent* >(std::malloc(buffer_size));
+      if (BOOST_UNLIKELY(!storage))
+        return boost::system::errc::not_enough_memory;
+      std::memset(storage, 0, buffer_size);
+    }
+
+    return ::readdir_r(dirp, storage, result);
+  }
+#endif
+
+  errno = 0;
+
+  struct dirent* p = ::readdir(dirp);
+  *result = p;
+  if (!p)
+    return errno;
+  return 0;
+}
+
+error_code dir_itr_increment(void*& handle, void*& buffer,
+  std::string& target, fs::file_status& sf, fs::file_status& symlink_sf)
+{
+  dirent* result = NULL;
+  int err = readdir_r_simulator(static_cast<DIR*>(handle), buffer, &result);
+  if (BOOST_UNLIKELY(err != 0))
+    return error_code(err, system_category());
+  if (result == NULL)
+    return fs::detail::dir_itr_close(handle, buffer);
+
+  target = result->d_name;
+
+#ifdef BOOST_FILESYSTEM_STATUS_CACHE
+  if (result->d_type == DT_UNKNOWN) // filesystem does not supply d_type value
+  {
+    sf = symlink_sf = fs::file_status(fs::status_error);
+  }
+  else  // filesystem supplies d_type value
+  {
+    if (result->d_type == DT_DIR)
+      sf = symlink_sf = fs::file_status(fs::directory_file);
+    else if (result->d_type == DT_REG)
+      sf = symlink_sf = fs::file_status(fs::regular_file);
+    else if (result->d_type == DT_LNK)
+    {
+      sf = fs::file_status(fs::status_error);
+      symlink_sf = fs::file_status(fs::symlink_file);
+    }
+    else
+      sf = symlink_sf = fs::file_status(fs::status_error);
+  }
+#else
+  sf = symlink_sf = fs::file_status(fs::status_error);
+#endif
+  return error_code();
+}
+
+#else // BOOST_WINDOWS_API
+
+error_code dir_itr_first(void*& handle, const fs::path& dir,
+  std::wstring& target, fs::file_status& sf, fs::file_status& symlink_sf)
+// Note: an empty root directory has no "." or ".." entries, so this
+// causes a ERROR_FILE_NOT_FOUND error which we do not considered an
+// error. It is treated as eof instead.
+{
+  // use a form of search Sebastian Martel reports will work with Win98
+  std::wstring dirpath(dir.wstring());
+  dirpath += (dirpath.empty()
+    || (dirpath[dirpath.size()-1] != L'\\'
+      && dirpath[dirpath.size()-1] != L'/'
+      && dirpath[dirpath.size()-1] != L':'))? L"\\*" : L"*";
+
+  WIN32_FIND_DATAW data;
+  if ((handle = ::FindFirstFileW(dirpath.c_str(), &data))
+    == INVALID_HANDLE_VALUE)
+  {
+    handle = 0;  // signal eof
+    DWORD error = ::GetLastError();
+    return error_code( (error == ERROR_FILE_NOT_FOUND
+                     // Windows Mobile returns ERROR_NO_MORE_FILES; see ticket #3551
+                     || error == ERROR_NO_MORE_FILES)
+      ? 0 : error, system_category() );
+  }
+  target = data.cFileName;
+  if (data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+  // reparse points are complex, so don't try to handle them here; instead just mark
+  // them as status_error which causes directory_entry caching to call status()
+  // and symlink_status() which do handle reparse points fully
+  {
+    sf.type(fs::status_error);
+    symlink_sf.type(fs::status_error);
+  }
+  else
+  {
+    if (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+    {
+      sf.type(fs::directory_file);
+      symlink_sf.type(fs::directory_file);
+    }
+    else
+    {
+      sf.type(fs::regular_file);
+      symlink_sf.type(fs::regular_file);
+    }
+    sf.permissions(make_permissions(data.cFileName, data.dwFileAttributes));
+    symlink_sf.permissions(sf.permissions());
+  }
+  return error_code();
+}
+
+error_code dir_itr_increment(void*& handle, std::wstring& target, fs::file_status& sf, fs::file_status& symlink_sf)
+{
+  WIN32_FIND_DATAW data;
+  if (::FindNextFileW(handle, &data)== 0)// fails
+  {
+    DWORD error = ::GetLastError();
+    fs::detail::dir_itr_close(handle);
+    return error_code(error == ERROR_NO_MORE_FILES ? 0 : error, system_category());
+  }
+  target = data.cFileName;
+  if (data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)
+  // reparse points are complex, so don't try to handle them here; instead just mark
+  // them as status_error which causes directory_entry caching to call status()
+  // and symlink_status() which do handle reparse points fully
+  {
+    sf.type(fs::status_error);
+    symlink_sf.type(fs::status_error);
+  }
+  else
+  {
+    if (data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+    {
+      sf.type(fs::directory_file);
+      symlink_sf.type(fs::directory_file);
+    }
+    else
+    {
+      sf.type(fs::regular_file);
+      symlink_sf.type(fs::regular_file);
+    }
+    sf.permissions(make_permissions(data.cFileName, data.dwFileAttributes));
+    symlink_sf.permissions(sf.permissions());
+  }
+  return error_code();
+}
+#endif
+
+BOOST_CONSTEXPR_OR_CONST err_t not_found_error_code =
+#ifdef BOOST_WINDOWS_API
+  ERROR_PATH_NOT_FOUND
+#else
+  ENOENT
+#endif
+;
+
+} // namespace
+
+//  dir_itr_close is called both from the ~dir_itr_imp()destructor
+//  and dir_itr_increment()
+BOOST_FILESYSTEM_DECL
+system::error_code dir_itr_close( // never throws
+  void*& handle
+#if defined(BOOST_POSIX_API)
+  , void*& buffer
+#endif
+  ) BOOST_NOEXCEPT
+{
+#ifdef BOOST_POSIX_API
+
+  if (buffer != NULL)
+  {
+    std::free(buffer);
+    buffer = NULL;
+  }
+
+  if (handle != NULL)
+  {
+    DIR* h = static_cast<DIR*>(handle);
+    handle = NULL;
+    int err = 0;
+    if (BOOST_UNLIKELY(::closedir(h) != 0))
+    {
+      err = errno;
+      return error_code(err, system_category());
+    }
+  }
+
+  return error_code();
+
+#else
+
+  if (handle != NULL)
+  {
+    ::FindClose(handle);
+    handle = NULL;
+  }
+  return error_code();
+
+#endif
+}
+
+BOOST_FILESYSTEM_DECL
+void directory_iterator_construct(directory_iterator& it, const path& p, unsigned int opts, system::error_code* ec)
+{
+  if (error(p.empty() ? not_found_error_code : 0, p, ec,
+            "boost::filesystem::directory_iterator::construct"))
+  {
+    return;
+  }
+
+  boost::intrusive_ptr< detail::dir_itr_imp > imp;
+  if (!ec)
+  {
+    imp = new detail::dir_itr_imp();
+  }
+  else
+  {
+    imp = new (std::nothrow) detail::dir_itr_imp();
+    if (BOOST_UNLIKELY(!imp))
+    {
+      *ec = make_error_code(system::errc::not_enough_memory);
+      return;
+    }
+  }
+
+  try
+  {
+    path::string_type filename;
+    file_status file_stat, symlink_file_stat;
+    error_code result = dir_itr_first(imp->handle,
+#     if defined(BOOST_POSIX_API)
+      imp->buffer,
+#     endif
+      p.c_str(), filename, file_stat, symlink_file_stat);
+
+    if (result)
+    {
+      if (result != make_error_condition(system::errc::permission_denied) ||
+        (opts & static_cast< unsigned int >(directory_options::skip_permission_denied)) == 0u)
+      {
+        error(result.value(), p,
+          ec, "boost::filesystem::directory_iterator::construct");
+      }
+
+      return;
+    }
+
+    if (imp->handle)
+    {
+      // Not eof
+      it.m_imp.swap(imp);
+      it.m_imp->dir_entry.assign(p / filename, file_stat, symlink_file_stat);
+      const path::string_type::value_type* filename_str = filename.c_str();
+      if (filename_str[0] == path::dot // dot or dot-dot
+        && (filename_str[1] == static_cast< path::string_type::value_type >('\0') ||
+           (filename_str[1] == path::dot && filename_str[2] == static_cast< path::string_type::value_type >('\0'))))
+      {
+        detail::directory_iterator_increment(it, ec);
+      }
+    }
+  }
+  catch (std::bad_alloc&)
+  {
+    if (!ec)
+      throw;
+
+    *ec = make_error_code(boost::system::errc::not_enough_memory);
+    it.m_imp.reset();
+  }
+}
+
+BOOST_FILESYSTEM_DECL
+void directory_iterator_increment(directory_iterator& it, system::error_code* ec)
+{
+  BOOST_ASSERT_MSG(!it.is_end(), "attempt to increment end iterator");
+
+  if (ec)
+    ec->clear();
+
+  try
+  {
+    path::string_type filename;
+    file_status file_stat, symlink_file_stat;
+    system::error_code increment_ec;
+
+    for (;;)
+    {
+      increment_ec = dir_itr_increment(it.m_imp->handle,
+#       if defined(BOOST_POSIX_API)
+        it.m_imp->buffer,
+#       endif
+        filename, file_stat, symlink_file_stat);
+
+      if (BOOST_UNLIKELY(!!increment_ec))  // happens if filesystem is corrupt, such as on a damaged optical disc
+      {
+        boost::intrusive_ptr< detail::dir_itr_imp > imp;
+        imp.swap(it.m_imp);
+        path error_path(imp->dir_entry.path().parent_path());  // fix ticket #5900
+        if (ec == NULL)
+        {
+          BOOST_FILESYSTEM_THROW(
+            filesystem_error("boost::filesystem::directory_iterator::operator++",
+              error_path,
+              increment_ec));
+        }
+        *ec = increment_ec;
+        return;
+      }
+
+      if (it.m_imp->handle == NULL)  // eof, make end
+      {
+        it.m_imp.reset();
+        return;
+      }
+
+      const path::string_type::value_type* filename_str = filename.c_str();
+      if (!(filename_str[0] == path::dot // !(dot or dot-dot)
+        && (filename_str[1] == static_cast< path::string_type::value_type >('\0') ||
+           (filename_str[1] == path::dot && filename_str[2] == static_cast< path::string_type::value_type >('\0')))))
+      {
+        it.m_imp->dir_entry.replace_filename(filename, file_stat, symlink_file_stat);
+        return;
+      }
+    }
+  }
+  catch (std::bad_alloc&)
+  {
+    if (!ec)
+      throw;
+
+    it.m_imp.reset();
+    *ec = make_error_code(boost::system::errc::not_enough_memory);
+  }
+}
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                           recursive_directory_iterator                               //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+BOOST_FILESYSTEM_DECL
+void recursive_directory_iterator_construct(recursive_directory_iterator& it, const path& dir_path, unsigned int opts, system::error_code* ec)
+{
+  if (ec)
+    ec->clear();
+
+  directory_iterator dir_it;
+  detail::directory_iterator_construct(dir_it, dir_path, opts, ec);
+  if ((ec && *ec) || dir_it == directory_iterator())
+    return;
+
+  boost::intrusive_ptr< detail::recur_dir_itr_imp > imp;
+  if (!ec)
+  {
+    imp = new detail::recur_dir_itr_imp(opts);
+  }
+  else
+  {
+    imp = new (std::nothrow) detail::recur_dir_itr_imp(opts);
+    if (BOOST_UNLIKELY(!imp))
+    {
+      *ec = make_error_code(system::errc::not_enough_memory);
+      return;
+    }
+  }
+
+  try
+  {
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    imp->m_stack.push_back(std::move(dir_it));
+#else
+    imp->m_stack.push_back(dir_it);
+#endif
+
+    it.m_imp.swap(imp);
+  }
+  catch (std::bad_alloc&)
+  {
+    if (ec)
+    {
+      *ec = make_error_code(system::errc::not_enough_memory);
+      return;
+    }
+
+    throw;
+  }
+}
+
+namespace {
+
+void recursive_directory_iterator_pop_on_error(detail::recur_dir_itr_imp* imp)
+{
+  imp->m_stack.pop_back();
+
+  while (!imp->m_stack.empty())
+  {
+    directory_iterator& dir_it = imp->m_stack.back();
+    system::error_code increment_ec;
+    detail::directory_iterator_increment(dir_it, &increment_ec);
+    if (!increment_ec && dir_it != directory_iterator())
+      break;
+
+    imp->m_stack.pop_back();
+  }
+}
+
+} // namespace
+
+BOOST_FILESYSTEM_DECL
+void recursive_directory_iterator_pop(recursive_directory_iterator& it, system::error_code* ec)
+{
+  BOOST_ASSERT_MSG(!it.is_end(), "pop() on end recursive_directory_iterator");
+  detail::recur_dir_itr_imp* const imp = it.m_imp.get();
+
+  if (ec)
+    ec->clear();
+
+  imp->m_stack.pop_back();
+
+  while (true)
+  {
+    if (imp->m_stack.empty())
+    {
+      it.m_imp.reset(); // done, so make end iterator
+      break;
+    }
+
+    directory_iterator& dir_it = imp->m_stack.back();
+    system::error_code increment_ec;
+    detail::directory_iterator_increment(dir_it, &increment_ec);
+    if (BOOST_UNLIKELY(!!increment_ec))
+    {
+      if ((imp->m_options & static_cast< unsigned int >(directory_options::pop_on_error)) == 0u)
+      {
+        // Make an end iterator on errors
+        it.m_imp.reset();
+      }
+      else
+      {
+        recursive_directory_iterator_pop_on_error(imp);
+
+        if (imp->m_stack.empty())
+          it.m_imp.reset(); // done, so make end iterator
+      }
+
+      if (ec == NULL)
+      {
+        BOOST_FILESYSTEM_THROW(
+          filesystem_error("boost::filesystem::recursive_directory_iterator::pop", increment_ec));
+      }
+
+      *ec = increment_ec;
+      return;
+    }
+
+    if (dir_it != directory_iterator())
+      break;
+
+    imp->m_stack.pop_back();
+  }
+}
+
+namespace {
+
+enum push_directory_result
+{
+  directory_not_pushed = 0u,
+  directory_pushed = 1u,
+  keep_depth = 1u << 1
+};
+
+// Returns: true if push occurs, otherwise false. Always returns false on error.
+inline push_directory_result recursive_directory_iterator_push_directory(detail::recur_dir_itr_imp* imp, system::error_code& ec) BOOST_NOEXCEPT
+{
+  push_directory_result result = directory_not_pushed;
+  try
+  {
+    //  Discover if the iterator is for a directory that needs to be recursed into,
+    //  taking symlinks and options into account.
+
+    if ((imp->m_options & static_cast< unsigned int >(directory_options::_detail_no_push)) != 0u)
+    {
+      imp->m_options &= ~static_cast< unsigned int >(directory_options::_detail_no_push);
+      return result;
+    }
+
+    file_status symlink_stat;
+
+    // if we are not recursing into symlinks, we are going to have to know if the
+    // stack top is a symlink, so get symlink_status and verify no error occurred
+    if ((imp->m_options & static_cast< unsigned int >(directory_options::follow_directory_symlink)) == 0u ||
+      (imp->m_options & static_cast< unsigned int >(directory_options::skip_dangling_symlinks)) != 0u)
+    {
+      symlink_stat = imp->m_stack.back()->symlink_status(ec);
+      if (ec)
+        return result;
+    }
+
+    // Logic for following predicate was contributed by Daniel Aarno to handle cyclic
+    // symlinks correctly and efficiently, fixing ticket #5652.
+    //   if (((m_options & directory_options::follow_directory_symlink) == directory_options::follow_directory_symlink
+    //         || !is_symlink(m_stack.back()->symlink_status()))
+    //       && is_directory(m_stack.back()->status())) ...
+    // The predicate code has since been rewritten to pass error_code arguments,
+    // per ticket #5653.
+
+    if ((imp->m_options & static_cast< unsigned int >(directory_options::follow_directory_symlink)) != 0u || !fs::is_symlink(symlink_stat))
+    {
+      file_status stat = imp->m_stack.back()->status(ec);
+      if (BOOST_UNLIKELY(!!ec))
+      {
+        if (ec == make_error_condition(system::errc::no_such_file_or_directory) && fs::is_symlink(symlink_stat) &&
+          (imp->m_options & static_cast< unsigned int >(directory_options::follow_directory_symlink | directory_options::skip_dangling_symlinks))
+          == static_cast< unsigned int >(directory_options::follow_directory_symlink | directory_options::skip_dangling_symlinks))
+        {
+          // Skip dangling symlink and continue iteration on the current depth level
+          ec = error_code();
+        }
+
+        return result;
+      }
+
+      if (!fs::is_directory(stat))
+        return result;
+
+      if (BOOST_UNLIKELY((imp->m_stack.size() - 1u) >= static_cast< std::size_t >((std::numeric_limits< int >::max)())))
+      {
+        // We cannot let depth to overflow
+        ec = make_error_code(system::errc::value_too_large);
+        // When depth overflow happens, avoid popping the current directory iterator
+        // and attempt to continue iteration on the current depth.
+        result = keep_depth;
+        return result;
+      }
+
+      directory_iterator next(imp->m_stack.back()->path(), static_cast< BOOST_SCOPED_ENUM_NATIVE(directory_options) >(imp->m_options), ec);
+      if (!ec && next != directory_iterator())
+      {
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+        imp->m_stack.push_back(std::move(next)); // may throw
+#else
+        imp->m_stack.push_back(next); // may throw
+#endif
+        return directory_pushed;
+      }
+    }
+  }
+  catch (std::bad_alloc&)
+  {
+    ec = make_error_code(system::errc::not_enough_memory);
+  }
+
+  return result;
+}
+
+} // namespace
+
+BOOST_FILESYSTEM_DECL
+void recursive_directory_iterator_increment(recursive_directory_iterator& it, system::error_code* ec)
+{
+  BOOST_ASSERT_MSG(!it.is_end(), "increment() on end recursive_directory_iterator");
+  detail::recur_dir_itr_imp* const imp = it.m_imp.get();
+
+  if (ec)
+    ec->clear();
+
+  system::error_code local_ec;
+
+  //  if various conditions are met, push a directory_iterator into the iterator stack
+  push_directory_result push_result = recursive_directory_iterator_push_directory(imp, local_ec);
+  if (push_result == directory_pushed)
+    return;
+
+  // report errors if any
+  if (BOOST_UNLIKELY(!!local_ec))
+  {
+  on_error:
+    if ((imp->m_options & static_cast< unsigned int >(directory_options::pop_on_error)) == 0u)
+    {
+      // Make an end iterator on errors
+      it.m_imp.reset();
+    }
+    else
+    {
+      if ((push_result & keep_depth) != 0u)
+      {
+        system::error_code increment_ec;
+        directory_iterator& dir_it = imp->m_stack.back();
+        detail::directory_iterator_increment(dir_it, &increment_ec);
+        if (!increment_ec && dir_it != directory_iterator())
+          goto on_error_return;
+      }
+
+      recursive_directory_iterator_pop_on_error(imp);
+
+      if (imp->m_stack.empty())
+        it.m_imp.reset(); // done, so make end iterator
+    }
+
+  on_error_return:
+    if (ec == NULL)
+    {
+      BOOST_FILESYSTEM_THROW(filesystem_error(
+        "filesystem::recursive_directory_iterator increment error",
+        local_ec));
+    }
+
+    *ec = local_ec;
+    return;
+  }
+
+  //  Do the actual increment operation on the top iterator in the iterator
+  //  stack, popping the stack if necessary, until either the stack is empty or a
+  //  non-end iterator is reached.
+  while (true)
+  {
+    if (imp->m_stack.empty())
+    {
+      it.m_imp.reset(); // done, so make end iterator
+      break;
+    }
+
+    directory_iterator& dir_it = imp->m_stack.back();
+    detail::directory_iterator_increment(dir_it, &local_ec);
+    if (BOOST_UNLIKELY(!!local_ec))
+      goto on_error;
+
+    if (dir_it != directory_iterator())
+      break;
+
+    imp->m_stack.pop_back();
+  }
+}
+
+} // namespace detail
+
+} // namespace filesystem
+} // namespace boost
diff --git a/src/boost/libs/filesystem/src/error_handling.hpp b/src/boost/libs/filesystem/src/error_handling.hpp
new file mode 100644
index 00000000..16211c4f
--- /dev/null
+++ b/src/boost/libs/filesystem/src/error_handling.hpp
@@ -0,0 +1,107 @@
+//  error_handling.hpp  --------------------------------------------------------------------//
+
+//  Copyright 2002-2009, 2014 Beman Dawes
+//  Copyright 2019 Andrey Semashev
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_FILESYSTEM3_SRC_ERROR_HANDLING_HPP_
+#define BOOST_FILESYSTEM3_SRC_ERROR_HANDLING_HPP_
+
+#include <cerrno>
+#include <boost/system/error_code.hpp>
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/exception.hpp>
+
+#if defined(BOOST_WINDOWS_API)
+#include <boost/winapi/basic_types.hpp>
+#include <boost/winapi/get_last_error.hpp>
+#include <boost/winapi/error_codes.hpp>
+#endif
+
+namespace boost {
+namespace filesystem {
+
+#if defined(BOOST_POSIX_API)
+
+typedef int err_t;
+
+//  POSIX uses a 0 return to indicate success
+#define BOOST_ERRNO    errno
+
+#define BOOST_ERROR_NOT_SUPPORTED ENOSYS
+#define BOOST_ERROR_ALREADY_EXISTS EEXIST
+
+#else
+
+typedef boost::winapi::DWORD_ err_t;
+
+//  Windows uses a non-0 return to indicate success
+#define BOOST_ERRNO    boost::winapi::GetLastError()
+
+#define BOOST_ERROR_ALREADY_EXISTS boost::winapi::ERROR_ALREADY_EXISTS_
+#define BOOST_ERROR_NOT_SUPPORTED boost::winapi::ERROR_NOT_SUPPORTED_
+
+#endif
+
+//  error handling helpers  ----------------------------------------------------------//
+
+// Implemented in exception.cpp
+void emit_error(err_t error_num, system::error_code* ec, const char* message);
+void emit_error(err_t error_num, const path& p, system::error_code* ec, const char* message);
+void emit_error(err_t error_num, const path& p1, const path& p2, system::error_code* ec, const char* message);
+
+inline bool error(err_t error_num, system::error_code* ec, const char* message)
+{
+  if (BOOST_LIKELY(!error_num))
+  {
+    if (ec)
+      ec->clear();
+    return false;
+  }
+  else
+  { //  error
+    filesystem::emit_error(error_num, ec, message);
+    return true;
+  }
+}
+
+inline bool error(err_t error_num, const path& p, system::error_code* ec, const char* message)
+{
+  if (BOOST_LIKELY(!error_num))
+  {
+    if (ec)
+      ec->clear();
+    return false;
+  }
+  else
+  { //  error
+    filesystem::emit_error(error_num, p, ec, message);
+    return true;
+  }
+}
+
+inline bool error(err_t error_num, const path& p1, const path& p2, system::error_code* ec, const char* message)
+{
+  if (BOOST_LIKELY(!error_num))
+  {
+    if (ec)
+      ec->clear();
+    return false;
+  }
+  else
+  { //  error
+    filesystem::emit_error(error_num, p1, p2, ec, message);
+    return true;
+  }
+}
+
+} // namespace filesystem
+} // namespace boost
+
+#endif // BOOST_FILESYSTEM3_SRC_ERROR_HANDLING_HPP_
diff --git a/src/boost/libs/filesystem/src/exception.cpp b/src/boost/libs/filesystem/src/exception.cpp
new file mode 100644
index 00000000..9824f0f2
--- /dev/null
+++ b/src/boost/libs/filesystem/src/exception.cpp
@@ -0,0 +1,145 @@
+//  boost/filesystem/exception.hpp  -----------------------------------------------------//
+
+//  Copyright Beman Dawes 2003
+//  Copyright Andrey Semashev 2019
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <string>
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem/exception.hpp>
+
+#include "error_handling.hpp"
+
+#include <boost/config/abi_prefix.hpp> // must be the last #include
+
+namespace boost {
+namespace filesystem {
+
+filesystem_error::filesystem_error(const std::string& what_arg, system::error_code ec) :
+  system::system_error(ec, what_arg)
+{
+  try
+  {
+    m_imp_ptr.reset(new impl());
+  }
+  catch (...)
+  {
+    m_imp_ptr.reset();
+  }
+}
+
+filesystem_error::filesystem_error(const std::string& what_arg, const path& path1_arg, system::error_code ec) :
+  system::system_error(ec, what_arg)
+{
+  try
+  {
+    m_imp_ptr.reset(new impl(path1_arg));
+  }
+  catch (...)
+  {
+    m_imp_ptr.reset();
+  }
+}
+
+filesystem_error::filesystem_error(const std::string& what_arg, const path& path1_arg, const path& path2_arg, system::error_code ec) :
+  system::system_error(ec, what_arg)
+{
+  try
+  {
+    m_imp_ptr.reset(new impl(path1_arg, path2_arg));
+  }
+  catch (...)
+  {
+    m_imp_ptr.reset();
+  }
+}
+
+filesystem_error::filesystem_error(filesystem_error const& that) :
+  system::system_error(static_cast< system::system_error const& >(that)),
+  m_imp_ptr(that.m_imp_ptr)
+{
+}
+
+filesystem_error& filesystem_error::operator= (filesystem_error const& that)
+{
+  static_cast< system::system_error& >(*this) = static_cast< system::system_error const& >(that);
+  m_imp_ptr = that.m_imp_ptr;
+  return *this;
+}
+
+filesystem_error::~filesystem_error() BOOST_NOEXCEPT_OR_NOTHROW
+{
+}
+
+const char* filesystem_error::what() const BOOST_NOEXCEPT_OR_NOTHROW
+{
+  if (m_imp_ptr.get()) try
+  {
+    if (m_imp_ptr->m_what.empty())
+    {
+      m_imp_ptr->m_what = system::system_error::what();
+      if (!m_imp_ptr->m_path1.empty())
+      {
+        m_imp_ptr->m_what += ": \"";
+        m_imp_ptr->m_what += m_imp_ptr->m_path1.string();
+        m_imp_ptr->m_what += "\"";
+      }
+      if (!m_imp_ptr->m_path2.empty())
+      {
+        m_imp_ptr->m_what += ", \"";
+        m_imp_ptr->m_what += m_imp_ptr->m_path2.string();
+        m_imp_ptr->m_what += "\"";
+      }
+    }
+
+    return m_imp_ptr->m_what.c_str();
+  }
+  catch (...)
+  {
+    m_imp_ptr->m_what.clear();
+  }
+
+  return system::system_error::what();
+}
+
+const path& filesystem_error::get_empty_path() BOOST_NOEXCEPT
+{
+  static const path empty_path;
+  return empty_path;
+}
+
+//  error handling helpers declared in error_handling.hpp  -----------------------------------------------------//
+
+void emit_error(err_t error_num, system::error_code* ec, const char* message)
+{
+  if (!ec)
+    BOOST_FILESYSTEM_THROW(filesystem_error(message, system::error_code(error_num, system::system_category())));
+  else
+    ec->assign(error_num, system::system_category());
+}
+
+void emit_error(err_t error_num, const path& p, system::error_code* ec, const char* message)
+{
+  if (!ec)
+    BOOST_FILESYSTEM_THROW(filesystem_error(message, p, system::error_code(error_num, system::system_category())));
+  else
+    ec->assign(error_num, system::system_category());
+}
+
+void emit_error(err_t error_num, const path& p1, const path& p2, system::error_code* ec, const char* message)
+{
+  if (ec == 0)
+    BOOST_FILESYSTEM_THROW(filesystem_error(message, p1, p2, system::error_code(error_num, system::system_category())));
+  else
+    ec->assign(error_num, system::system_category());
+}
+
+} // namespace filesystem
+} // namespace boost
+
+#include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
diff --git a/src/boost/libs/filesystem/src/operations.cpp b/src/boost/libs/filesystem/src/operations.cpp
new file mode 100644
index 00000000..306875c5
--- /dev/null
+++ b/src/boost/libs/filesystem/src/operations.cpp
@@ -0,0 +1,1996 @@
+//  operations.cpp  --------------------------------------------------------------------//
+
+//  Copyright 2002-2009, 2014 Beman Dawes
+//  Copyright 2001 Dietmar Kuehl
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+//  define 64-bit offset macros BEFORE including boost/config.hpp (see ticket #5355)
+#if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ < 24
+// Android fully supports 64-bit file offsets only for API 24 and above.
+//
+// Trying to define _FILE_OFFSET_BITS=64 for APIs below 24
+// leads to compilation failure for one or another reason,
+// depending on target Android API level, Android NDK version,
+// used STL, order of include paths and more.
+// For more information, please see:
+// - https://github.com/boostorg/filesystem/issues/65
+// - https://github.com/boostorg/filesystem/pull/69
+//
+// Android NDK developers consider it the expected behavior.
+// See their official position here:
+// - https://github.com/android-ndk/ndk/issues/501#issuecomment-326447479
+// - https://android.googlesource.com/platform/bionic/+/a34817457feee026e8702a1d2dffe9e92b51d7d1/docs/32-bit-abi.md#32_bit-abi-bugs
+//
+// Thus we do not define _FILE_OFFSET_BITS in such case.
+#else
+// Defining _FILE_OFFSET_BITS=64 should kick in 64-bit off_t's
+// (and thus st_size) on 32-bit systems that provide the Large File
+// Support (LFS) interface, such as Linux, Solaris, and IRIX.
+//
+// At the time of this comment writing (March 2018), on most systems
+// _FILE_OFFSET_BITS=64 definition is harmless:
+// either the definition is supported and enables 64-bit off_t,
+// or the definition is not supported and is ignored, in which case
+// off_t does not change its default size for the target system
+// (which may be 32-bit or 64-bit already).
+// Thus it makes sense to have _FILE_OFFSET_BITS=64 defined by default,
+// instead of listing every system that supports the definition.
+// Those few systems, on which _FILE_OFFSET_BITS=64 is harmful,
+// for example this definition causes compilation failure on those systems,
+// should be exempt from defining _FILE_OFFSET_BITS by adding
+// an appropriate #elif block above with the appropriate comment.
+//
+// _FILE_OFFSET_BITS must be defined before any headers are included
+// to ensure that the definition is available to all included headers.
+// That is required at least on Solaris, and possibly on other
+// systems as well.
+#define _FILE_OFFSET_BITS 64
+#endif
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS  // Sun readdir_r() needs this
+#endif
+
+// Include Boost.Predef first so that windows.h is guaranteed to be not included
+#include <boost/predef/os/windows.h>
+#if BOOST_OS_WINDOWS
+#include <boost/winapi/config.hpp>
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/file_status.hpp>
+#include <boost/filesystem/exception.hpp>
+#include <boost/filesystem/directory.hpp>
+#include <boost/system/error_code.hpp>
+#include <boost/smart_ptr/scoped_array.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/assert.hpp>
+#include <new> // std::bad_alloc
+#include <limits>
+#include <string>
+#include <cstddef>
+#include <cstdlib>     // for malloc, free
+#include <cstring>
+#include <cstdio>      // for remove, rename
+#if defined(__QNXNTO__)  // see ticket #5355
+# include <stdio.h>
+#endif
+#include <cerrno>
+
+#ifdef BOOST_FILEYSTEM_INCLUDE_IOSTREAM
+# include <iostream>
+#endif
+
+# ifdef BOOST_POSIX_API
+
+#   include <sys/types.h>
+#   include <sys/stat.h>
+#   if !defined(__APPLE__) && !defined(__OpenBSD__) && !defined(__ANDROID__) \
+ && !defined(__VXWORKS__)
+#     include <sys/statvfs.h>
+#     define BOOST_STATVFS statvfs
+#     define BOOST_STATVFS_F_FRSIZE vfs.f_frsize
+#   else
+#     ifdef __OpenBSD__
+#       include <sys/param.h>
+#     elif defined(__ANDROID__)
+#       include <sys/vfs.h>
+#     endif
+#     if !defined(__VXWORKS__)
+#       include <sys/mount.h>
+#     endif
+#     define BOOST_STATVFS statfs
+#     define BOOST_STATVFS_F_FRSIZE static_cast<boost::uintmax_t>(vfs.f_bsize)
+#   endif
+#   include <unistd.h>
+#   include <fcntl.h>
+#   if _POSIX_C_SOURCE < 200809L
+#     include <utime.h>
+#   endif
+#   include "limits.h"
+
+# else // BOOST_WINDOWS_API
+
+#   include <boost/winapi/dll.hpp> // get_proc_address, GetModuleHandleW
+#   include <cwchar>
+#   include <io.h>
+#   include <windows.h>
+#   include <winnt.h>
+#   if defined(__BORLANDC__) || defined(__MWERKS__)
+#     if defined(__BORLANDC__)
+        using std::time_t;
+#     endif
+#     include <utime.h>
+#   else
+#     include <sys/utime.h>
+#   endif
+
+#include "windows_tools.hpp"
+
+# endif  // BOOST_WINDOWS_API
+
+#include "error_handling.hpp"
+
+namespace fs = boost::filesystem;
+using boost::filesystem::path;
+using boost::filesystem::filesystem_error;
+using boost::filesystem::perms;
+using boost::system::error_code;
+using boost::system::system_category;
+
+# if defined(BOOST_WINDOWS_API)
+
+//  REPARSE_DATA_BUFFER related definitions are found in ntifs.h, which is part of the
+//  Windows Device Driver Kit. Since that's inconvenient, the definitions are provided
+//  here. See http://msdn.microsoft.com/en-us/library/ms791514.aspx
+
+#if !defined(REPARSE_DATA_BUFFER_HEADER_SIZE)  // mingw winnt.h does provide the defs
+
+#define SYMLINK_FLAG_RELATIVE 1
+
+typedef struct _REPARSE_DATA_BUFFER {
+  ULONG  ReparseTag;
+  USHORT  ReparseDataLength;
+  USHORT  Reserved;
+  union {
+    struct {
+      USHORT  SubstituteNameOffset;
+      USHORT  SubstituteNameLength;
+      USHORT  PrintNameOffset;
+      USHORT  PrintNameLength;
+      ULONG  Flags;
+      WCHAR  PathBuffer[1];
+  /*  Example of distinction between substitute and print names:
+        mklink /d ldrive c:\
+        SubstituteName: c:\\??\
+        PrintName: c:\
+  */
+     } SymbolicLinkReparseBuffer;
+    struct {
+      USHORT  SubstituteNameOffset;
+      USHORT  SubstituteNameLength;
+      USHORT  PrintNameOffset;
+      USHORT  PrintNameLength;
+      WCHAR  PathBuffer[1];
+    } MountPointReparseBuffer;
+    struct {
+      UCHAR  DataBuffer[1];
+    } GenericReparseBuffer;
+  };
+} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
+
+#define REPARSE_DATA_BUFFER_HEADER_SIZE \
+  FIELD_OFFSET(REPARSE_DATA_BUFFER, GenericReparseBuffer)
+
+#endif
+
+#ifndef MAXIMUM_REPARSE_DATA_BUFFER_SIZE
+#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE  ( 16 * 1024 )
+#endif
+
+# ifndef FSCTL_GET_REPARSE_POINT
+#   define FSCTL_GET_REPARSE_POINT 0x900a8
+# endif
+
+# ifndef IO_REPARSE_TAG_SYMLINK
+#   define IO_REPARSE_TAG_SYMLINK (0xA000000CL)
+# endif
+
+# endif  // BOOST_WINDOWS_API
+
+//  POSIX/Windows macros  ----------------------------------------------------//
+
+//  Portions of the POSIX and Windows API's are very similar, except for name,
+//  order of arguments, and meaning of zero/non-zero returns. The macros below
+//  abstract away those differences. They follow Windows naming and order of
+//  arguments, and return true to indicate no error occurred. [POSIX naming,
+//  order of arguments, and meaning of return were followed initially, but
+//  found to be less clear and cause more coding errors.]
+
+# if defined(BOOST_POSIX_API)
+
+#   define BOOST_SET_CURRENT_DIRECTORY(P)(::chdir(P)== 0)
+#   define BOOST_CREATE_DIRECTORY(P)(::mkdir(P, S_IRWXU|S_IRWXG|S_IRWXO)== 0)
+#   define BOOST_CREATE_HARD_LINK(F,T)(::link(T, F)== 0)
+#   define BOOST_CREATE_SYMBOLIC_LINK(F,T,Flag)(::symlink(T, F)== 0)
+#   define BOOST_REMOVE_DIRECTORY(P)(::rmdir(P)== 0)
+#   define BOOST_DELETE_FILE(P)(::unlink(P)== 0)
+#   define BOOST_COPY_DIRECTORY(F,T)(!(::stat(from.c_str(), &from_stat)!= 0\
+         || ::mkdir(to.c_str(),from_stat.st_mode)!= 0))
+#   define BOOST_COPY_FILE(F,T,FailIfExistsBool)copy_file_api(F, T, FailIfExistsBool)
+#   define BOOST_MOVE_FILE(OLD,NEW)(::rename(OLD, NEW)== 0)
+#   define BOOST_RESIZE_FILE(P,SZ)(::truncate(P, SZ)== 0)
+
+# else  // BOOST_WINDOWS_API
+
+#   define BOOST_SET_CURRENT_DIRECTORY(P)(::SetCurrentDirectoryW(P)!= 0)
+#   define BOOST_CREATE_DIRECTORY(P)(::CreateDirectoryW(P, 0)!= 0)
+#   define BOOST_CREATE_HARD_LINK(F,T)(create_hard_link_api(F, T, 0)!= 0)
+#   define BOOST_CREATE_SYMBOLIC_LINK(F,T,Flag)(create_symbolic_link_api(F, T, Flag)!= 0)
+#   define BOOST_REMOVE_DIRECTORY(P)(::RemoveDirectoryW(P)!= 0)
+#   define BOOST_DELETE_FILE(P)(::DeleteFileW(P)!= 0)
+#   define BOOST_COPY_DIRECTORY(F,T)(::CreateDirectoryExW(F, T, 0)!= 0)
+#   define BOOST_COPY_FILE(F,T,FailIfExistsBool)(::CopyFileW(F, T, FailIfExistsBool)!= 0)
+#   define BOOST_MOVE_FILE(OLD,NEW)(::MoveFileExW(OLD, NEW, MOVEFILE_REPLACE_EXISTING|MOVEFILE_COPY_ALLOWED)!= 0)
+#   define BOOST_RESIZE_FILE(P,SZ)(resize_file_api(P, SZ)!= 0)
+#   define BOOST_READ_SYMLINK(P,T)
+
+# endif
+
+namespace boost {
+namespace filesystem {
+namespace detail {
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                        helpers (all operating systems)                               //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+namespace {
+
+// Absolute maximum path length, in bytes, that we're willing to accept from various system calls.
+// This value is arbitrary, it is supposed to be a hard limit to avoid memory exhaustion
+// in some of the algorithms below in case of some corrupted or maliciously broken filesystem.
+BOOST_CONSTEXPR_OR_CONST std::size_t absolute_path_max = 16u * 1024u * 1024u;
+
+fs::file_type query_file_type(const path& p, error_code* ec);
+
+//  general helpers  -----------------------------------------------------------------//
+
+bool is_empty_directory(const path& p, error_code* ec)
+{
+  return (ec != 0 ? fs::directory_iterator(p, *ec) : fs::directory_iterator(p))
+    == fs::directory_iterator();
+}
+
+bool not_found_error(int errval) BOOST_NOEXCEPT; // forward declaration
+
+// only called if directory exists
+bool remove_directory(const path& p) // true if succeeds or not found
+{
+  return BOOST_REMOVE_DIRECTORY(p.c_str())
+    || not_found_error(BOOST_ERRNO);  // mitigate possible file system race. See #11166
+}
+
+// only called if file exists
+bool remove_file(const path& p) // true if succeeds or not found
+{
+  return BOOST_DELETE_FILE(p.c_str())
+    || not_found_error(BOOST_ERRNO);  // mitigate possible file system race. See #11166
+}
+
+// called by remove and remove_all_aux
+bool remove_file_or_directory(const path& p, fs::file_type type, error_code* ec)
+  // return true if file removed, false if not removed
+{
+  if (type == fs::file_not_found)
+  {
+    if (ec != 0) ec->clear();
+    return false;
+  }
+
+  if (type == fs::directory_file
+#     ifdef BOOST_WINDOWS_API
+      || type == fs::_detail_directory_symlink
+#     endif
+    )
+  {
+    if (error(!remove_directory(p) ? BOOST_ERRNO : 0, p, ec,
+      "boost::filesystem::remove"))
+        return false;
+  }
+  else
+  {
+    if (error(!remove_file(p) ? BOOST_ERRNO : 0, p, ec,
+      "boost::filesystem::remove"))
+        return false;
+  }
+  return true;
+}
+
+boost::uintmax_t remove_all_aux(const path& p, fs::file_type type,
+  error_code* ec)
+{
+  boost::uintmax_t count = 0;
+
+  if (type == fs::directory_file)  // but not a directory symlink
+  {
+    fs::directory_iterator itr;
+    if (ec != 0)
+    {
+      itr = fs::directory_iterator(p, *ec);
+      if (*ec)
+        return count;
+    }
+    else
+      itr = fs::directory_iterator(p);
+
+    const fs::directory_iterator end_dit;
+    while(itr != end_dit)
+    {
+      fs::file_type tmp_type = query_file_type(itr->path(), ec);
+      if (ec != 0 && *ec)
+        return count;
+
+      count += remove_all_aux(itr->path(), tmp_type, ec);
+      if (ec != 0 && *ec)
+        return count;
+
+      fs::detail::directory_iterator_increment(itr, ec);
+      if (ec != 0 && *ec)
+        return count;
+    }
+  }
+
+  remove_file_or_directory(p, type, ec);
+  if (ec != 0 && *ec)
+    return count;
+
+  return ++count;
+}
+
+#ifdef BOOST_POSIX_API
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                            POSIX-specific helpers                                    //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+BOOST_CONSTEXPR_OR_CONST char dot = '.';
+
+inline bool not_found_error(int errval) BOOST_NOEXCEPT
+{
+  return errval == ENOENT || errval == ENOTDIR;
+}
+
+bool // true if ok
+copy_file_api(const std::string& from_p,
+  const std::string& to_p, bool fail_if_exists)
+{
+  BOOST_CONSTEXPR_OR_CONST std::size_t buf_sz = 65536;
+  boost::scoped_array<char> buf(new char [buf_sz]);
+  int infile=-1, outfile=-1;  // -1 means not open
+
+  // bug fixed: code previously did a stat()on the from_file first, but that
+  // introduced a gratuitous race condition; the stat()is now done after the open()
+
+  if ((infile = ::open(from_p.c_str(), O_RDONLY))< 0)
+    { return false; }
+
+  struct stat from_stat;
+  if (::stat(from_p.c_str(), &from_stat)!= 0)
+  {
+    ::close(infile);
+    return false;
+  }
+
+  int oflag = O_CREAT | O_WRONLY | O_TRUNC;
+  if (fail_if_exists)
+    oflag |= O_EXCL;
+  if ((outfile = ::open(to_p.c_str(), oflag, from_stat.st_mode)) < 0)
+  {
+    const int open_errno = errno;
+    BOOST_ASSERT(infile >= 0);
+    ::close(infile);
+    errno = open_errno;
+    return false;
+  }
+
+  ssize_t sz, sz_read=1, sz_write;
+  while (sz_read > 0
+    && (sz_read = ::read(infile, buf.get(), buf_sz)) > 0)
+  {
+    // Allow for partial writes - see Advanced Unix Programming (2nd Ed.),
+    // Marc Rochkind, Addison-Wesley, 2004, page 94
+    sz_write = 0;
+    do
+    {
+      BOOST_ASSERT(sz_read - sz_write > 0);  // #1
+        // ticket 4438 claimed possible infinite loop if write returns 0. My analysis
+        // is that POSIX specifies 0 return only if 3rd arg is 0, and that will never
+        // happen due to loop entry and coninuation conditions. BOOST_ASSERT #1 above
+        // and #2 below added to verify that analysis.
+      if ((sz = ::write(outfile, buf.get() + sz_write,
+        sz_read - sz_write)) < 0)
+      {
+        sz_read = sz; // cause read loop termination
+        break;        //  and error reported after closes
+      }
+      BOOST_ASSERT(sz > 0);                  // #2
+      sz_write += sz;
+    } while (sz_write < sz_read);
+  }
+
+  if (::close(infile)< 0)
+    sz_read = -1;
+  if (::close(outfile)< 0)
+    sz_read = -1;
+
+  return sz_read >= 0;
+}
+
+inline fs::file_type query_file_type(const path& p, error_code* ec)
+{
+  return fs::detail::symlink_status(p, ec).type();
+}
+
+# else
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                            Windows-specific helpers                                  //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+BOOST_CONSTEXPR_OR_CONST std::size_t buf_size = 128;
+
+BOOST_CONSTEXPR_OR_CONST wchar_t dot = L'.';
+
+inline std::wstring wgetenv(const wchar_t* name)
+{
+  // use a separate buffer since C++03 basic_string is not required to be contiguous
+  const DWORD size = ::GetEnvironmentVariableW(name, NULL, 0);
+  if (size > 0)
+  {
+    boost::scoped_array<wchar_t> buf(new wchar_t[size]);
+    if (BOOST_LIKELY(::GetEnvironmentVariableW(name, buf.get(), size) > 0))
+      return std::wstring(buf.get());
+  }
+
+  return std::wstring();
+}
+
+inline bool not_found_error(int errval) BOOST_NOEXCEPT
+{
+  return errval == ERROR_FILE_NOT_FOUND
+    || errval == ERROR_PATH_NOT_FOUND
+    || errval == ERROR_INVALID_NAME  // "tools/jam/src/:sys:stat.h", "//foo"
+    || errval == ERROR_INVALID_DRIVE  // USB card reader with no card inserted
+    || errval == ERROR_NOT_READY  // CD/DVD drive with no disc inserted
+    || errval == ERROR_INVALID_PARAMETER  // ":sys:stat.h"
+    || errval == ERROR_BAD_PATHNAME  // "//nosuch" on Win64
+    || errval == ERROR_BAD_NETPATH;  // "//nosuch" on Win32
+}
+
+// these constants come from inspecting some Microsoft sample code
+std::time_t to_time_t(const FILETIME & ft)
+{
+  __int64 t = (static_cast<__int64>(ft.dwHighDateTime)<< 32)
+    + ft.dwLowDateTime;
+#   if !defined(BOOST_MSVC) || BOOST_MSVC > 1300 // > VC++ 7.0
+  t -= 116444736000000000LL;
+#   else
+  t -= 116444736000000000;
+#   endif
+  t /= 10000000;
+  return static_cast<std::time_t>(t);
+}
+
+void to_FILETIME(std::time_t t, FILETIME & ft)
+{
+  __int64 temp = t;
+  temp *= 10000000;
+#   if !defined(BOOST_MSVC) || BOOST_MSVC > 1300 // > VC++ 7.0
+  temp += 116444736000000000LL;
+#   else
+  temp += 116444736000000000;
+#   endif
+  ft.dwLowDateTime = static_cast<DWORD>(temp);
+  ft.dwHighDateTime = static_cast<DWORD>(temp >> 32);
+}
+
+// Thanks to Jeremy Maitin-Shepard for much help and for permission to
+// base the equivalent()implementation on portions of his
+// file-equivalence-win32.cpp experimental code.
+
+struct handle_wrapper
+{
+  HANDLE handle;
+  handle_wrapper(HANDLE h)
+    : handle(h){}
+  ~handle_wrapper()
+  {
+    if (handle != INVALID_HANDLE_VALUE)
+      ::CloseHandle(handle);
+  }
+};
+
+HANDLE create_file_handle(const path& p, DWORD dwDesiredAccess,
+  DWORD dwShareMode, LPSECURITY_ATTRIBUTES lpSecurityAttributes,
+  DWORD dwCreationDisposition, DWORD dwFlagsAndAttributes,
+  HANDLE hTemplateFile)
+{
+  return ::CreateFileW(p.c_str(), dwDesiredAccess, dwShareMode,
+    lpSecurityAttributes, dwCreationDisposition, dwFlagsAndAttributes,
+    hTemplateFile);
+}
+
+bool is_reparse_point_a_symlink(const path& p)
+{
+  handle_wrapper h(create_file_handle(p, FILE_READ_EA,
+    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING,
+    FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, NULL));
+  if (h.handle == INVALID_HANDLE_VALUE)
+    return false;
+
+  boost::scoped_array<char> buf(new char [MAXIMUM_REPARSE_DATA_BUFFER_SIZE]);
+
+  // Query the reparse data
+  DWORD dwRetLen;
+  BOOL result = ::DeviceIoControl(h.handle, FSCTL_GET_REPARSE_POINT, NULL, 0, buf.get(),
+    MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &dwRetLen, NULL);
+  if (!result) return false;
+
+  return reinterpret_cast<const REPARSE_DATA_BUFFER*>(buf.get())->ReparseTag
+      == IO_REPARSE_TAG_SYMLINK
+      // Issue 9016 asked that NTFS directory junctions be recognized as directories.
+      // That is equivalent to recognizing them as symlinks, and then the normal symlink
+      // mechanism will take care of recognizing them as directories.
+      //
+      // Directory junctions are very similar to symlinks, but have some performance
+      // and other advantages over symlinks. They can be created from the command line
+      // with "mklink /j junction-name target-path".
+    || reinterpret_cast<const REPARSE_DATA_BUFFER*>(buf.get())->ReparseTag
+      == IO_REPARSE_TAG_MOUNT_POINT;  // aka "directory junction" or "junction"
+}
+
+inline std::size_t get_full_path_name(
+  const path& src, std::size_t len, wchar_t* buf, wchar_t** p)
+{
+  return static_cast<std::size_t>(
+    ::GetFullPathNameW(src.c_str(), static_cast<DWORD>(len), buf, p));
+}
+
+fs::file_status process_status_failure(const path& p, error_code* ec)
+{
+  int errval(::GetLastError());
+  if (ec != 0)                             // always report errval, even though some
+    ec->assign(errval, system_category());   // errval values are not status_errors
+
+  if (not_found_error(errval))
+  {
+    return fs::file_status(fs::file_not_found, fs::no_perms);
+  }
+  else if (errval == ERROR_SHARING_VIOLATION)
+  {
+    return fs::file_status(fs::type_unknown);
+  }
+  if (ec == 0)
+    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::status",
+      p, error_code(errval, system_category())));
+  return fs::file_status(fs::status_error);
+}
+
+//  differs from symlink_status() in that directory symlinks are reported as
+//  _detail_directory_symlink, as required on Windows by remove() and its helpers.
+fs::file_type query_file_type(const path& p, error_code* ec)
+{
+  DWORD attr(::GetFileAttributesW(p.c_str()));
+  if (attr == 0xFFFFFFFF)
+  {
+    return process_status_failure(p, ec).type();
+  }
+
+  if (ec != 0) ec->clear();
+
+  if (attr & FILE_ATTRIBUTE_REPARSE_POINT)
+  {
+    if (is_reparse_point_a_symlink(p))
+      return (attr & FILE_ATTRIBUTE_DIRECTORY)
+        ? fs::_detail_directory_symlink
+        : fs::symlink_file;
+    return fs::reparse_file;
+  }
+
+  return (attr & FILE_ATTRIBUTE_DIRECTORY)
+    ? fs::directory_file
+    : fs::regular_file;
+}
+
+BOOL resize_file_api(const wchar_t* p, boost::uintmax_t size)
+{
+  handle_wrapper h(CreateFileW(p, GENERIC_WRITE, 0, 0, OPEN_EXISTING,
+                              FILE_ATTRIBUTE_NORMAL, 0));
+  LARGE_INTEGER sz;
+  sz.QuadPart = size;
+  return h.handle != INVALID_HANDLE_VALUE
+    && ::SetFilePointerEx(h.handle, sz, 0, FILE_BEGIN)
+    && ::SetEndOfFile(h.handle);
+}
+
+//  Windows kernel32.dll functions that may or may not be present
+//  must be accessed through pointers
+
+typedef BOOL (WINAPI *PtrCreateHardLinkW)(
+  /*__in*/       LPCWSTR lpFileName,
+  /*__in*/       LPCWSTR lpExistingFileName,
+  /*__reserved*/ LPSECURITY_ATTRIBUTES lpSecurityAttributes
+ );
+
+PtrCreateHardLinkW create_hard_link_api = PtrCreateHardLinkW(
+  boost::winapi::get_proc_address(
+    boost::winapi::GetModuleHandleW(L"kernel32.dll"), "CreateHardLinkW"));
+
+typedef BOOLEAN (WINAPI *PtrCreateSymbolicLinkW)(
+  /*__in*/ LPCWSTR lpSymlinkFileName,
+  /*__in*/ LPCWSTR lpTargetFileName,
+  /*__in*/ DWORD dwFlags
+ );
+
+PtrCreateSymbolicLinkW create_symbolic_link_api = PtrCreateSymbolicLinkW(
+  boost::winapi::get_proc_address(
+    boost::winapi::GetModuleHandleW(L"kernel32.dll"), "CreateSymbolicLinkW"));
+
+#endif
+
+//#ifdef BOOST_WINDOWS_API
+//
+//
+//  inline bool get_free_disk_space(const std::wstring& ph,
+//    PULARGE_INTEGER avail, PULARGE_INTEGER total, PULARGE_INTEGER free)
+//    { return ::GetDiskFreeSpaceExW(ph.c_str(), avail, total, free)!= 0; }
+//
+//#endif
+
+} // unnamed namespace
+} // namespace detail
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                operations functions declared in operations.hpp                       //
+//                            in alphabetic order                                       //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+BOOST_FILESYSTEM_DECL
+path absolute(const path& p, const path& base)
+{
+//  if ( p.empty() || p.is_absolute() )
+//    return p;
+//  //  recursively calling absolute is sub-optimal, but is simple
+//  path abs_base(base.is_absolute() ? base : absolute(base));
+//# ifdef BOOST_WINDOWS_API
+//  if (p.has_root_directory())
+//    return abs_base.root_name() / p;
+//  //  !p.has_root_directory
+//  if (p.has_root_name())
+//    return p.root_name()
+//      / abs_base.root_directory() / abs_base.relative_path() / p.relative_path();
+//  //  !p.has_root_name()
+//# endif
+//  return abs_base / p;
+
+  //  recursively calling absolute is sub-optimal, but is sure and simple
+  path abs_base(base.is_absolute() ? base : absolute(base));
+
+  //  store expensive to compute values that are needed multiple times
+  path p_root_name (p.root_name());
+  path base_root_name (abs_base.root_name());
+  path p_root_directory (p.root_directory());
+
+  if (p.empty())
+    return abs_base;
+
+  if (!p_root_name.empty())  // p.has_root_name()
+  {
+    if (p_root_directory.empty())  // !p.has_root_directory()
+      return p_root_name / abs_base.root_directory()
+      / abs_base.relative_path() / p.relative_path();
+    // p is absolute, so fall through to return p at end of block
+  }
+  else if (!p_root_directory.empty())  // p.has_root_directory()
+  {
+#   ifdef BOOST_POSIX_API
+    // POSIX can have root name it it is a network path
+    if (base_root_name.empty())   // !abs_base.has_root_name()
+      return p;
+#   endif
+    return base_root_name / p;
+  }
+  else
+  {
+    return abs_base / p;
+  }
+
+  return p;  // p.is_absolute() is true
+}
+
+namespace detail {
+
+BOOST_FILESYSTEM_DECL bool possible_large_file_size_support()
+{
+# ifdef BOOST_POSIX_API
+  typedef struct stat struct_stat;
+  return sizeof(struct_stat().st_size) > 4;
+# else
+  return true;
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+path canonical(const path& p, const path& base, system::error_code* ec)
+{
+  path source (p.is_absolute() ? p : absolute(p, base));
+  path root(source.root_path());
+  path result;
+
+  system::error_code local_ec;
+  file_status stat (status(source, local_ec));
+
+  if (stat.type() == fs::file_not_found)
+  {
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error(
+        "boost::filesystem::canonical", source,
+        error_code(system::errc::no_such_file_or_directory, system::generic_category())));
+    ec->assign(system::errc::no_such_file_or_directory, system::generic_category());
+    return result;
+  }
+  else if (local_ec)
+  {
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error(
+        "boost::filesystem::canonical", source, local_ec));
+    *ec = local_ec;
+    return result;
+  }
+
+  bool scan = true;
+  while (scan)
+  {
+    scan = false;
+    result.clear();
+    for (path::iterator itr = source.begin(); itr != source.end(); ++itr)
+    {
+      if (*itr == dot_path())
+        continue;
+      if (*itr == dot_dot_path())
+      {
+        if (result != root)
+          result.remove_filename();
+        continue;
+      }
+
+      result /= *itr;
+
+      bool is_sym (is_symlink(detail::symlink_status(result, ec)));
+      if (ec && *ec)
+        return path();
+
+      if (is_sym)
+      {
+        path link(detail::read_symlink(result, ec));
+        if (ec && *ec)
+          return path();
+        result.remove_filename();
+
+        if (link.is_absolute())
+        {
+          for (++itr; itr != source.end(); ++itr)
+            link /= *itr;
+          source = link;
+        }
+        else // link is relative
+        {
+          path new_source(result);
+          new_source /= link;
+          for (++itr; itr != source.end(); ++itr)
+            new_source /= *itr;
+          source = new_source;
+        }
+        scan = true;  // symlink causes scan to be restarted
+        break;
+      }
+    }
+  }
+  if (ec != 0)
+    ec->clear();
+  BOOST_ASSERT_MSG(result.is_absolute(), "canonical() implementation error; please report");
+  return result;
+}
+
+BOOST_FILESYSTEM_DECL
+void copy(const path& from, const path& to, system::error_code* ec)
+{
+  file_status s(detail::symlink_status(from, ec));
+  if (ec != 0 && *ec) return;
+
+  if(is_symlink(s))
+  {
+    detail::copy_symlink(from, to, ec);
+  }
+  else if(is_directory(s))
+  {
+    detail::copy_directory(from, to, ec);
+  }
+  else if(is_regular_file(s))
+  {
+    detail::copy_file(from, to, detail::fail_if_exists, ec);
+  }
+  else
+  {
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::copy",
+        from, to, error_code(BOOST_ERROR_NOT_SUPPORTED, system_category())));
+    ec->assign(BOOST_ERROR_NOT_SUPPORTED, system_category());
+  }
+}
+
+BOOST_FILESYSTEM_DECL
+void copy_directory(const path& from, const path& to, system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+  struct stat from_stat;
+# endif
+  error(!BOOST_COPY_DIRECTORY(from.c_str(), to.c_str()) ? BOOST_ERRNO : 0,
+    from, to, ec, "boost::filesystem::copy_directory");
+}
+
+BOOST_FILESYSTEM_DECL
+void copy_file(const path& from, const path& to, copy_option option, error_code* ec)
+{
+  error(!BOOST_COPY_FILE(from.c_str(), to.c_str(),
+    option == fail_if_exists) ? BOOST_ERRNO : 0,
+      from, to, ec, "boost::filesystem::copy_file");
+}
+
+BOOST_FILESYSTEM_DECL
+void copy_symlink(const path& existing_symlink, const path& new_symlink,
+  system::error_code* ec)
+{
+# if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0600
+  error(BOOST_ERROR_NOT_SUPPORTED, new_symlink, existing_symlink, ec,
+    "boost::filesystem::copy_symlink");
+
+# else  // modern Windows or BOOST_POSIX_API
+  path p(read_symlink(existing_symlink, ec));
+  if (ec != 0 && *ec) return;
+  create_symlink(p, new_symlink, ec);
+
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+bool create_directories(const path& p, system::error_code* ec)
+{
+ if (p.empty())
+ {
+   if (ec == 0)
+     BOOST_FILESYSTEM_THROW(filesystem_error(
+       "boost::filesystem::create_directories", p,
+       system::errc::make_error_code(system::errc::invalid_argument)));
+   else
+     ec->assign(system::errc::invalid_argument, system::generic_category());
+   return false;
+ }
+
+  if (p.filename_is_dot() || p.filename_is_dot_dot())
+    return create_directories(p.parent_path(), ec);
+
+  error_code local_ec;
+  file_status p_status = status(p, local_ec);
+
+  if (p_status.type() == directory_file)
+  {
+    if (ec != 0)
+      ec->clear();
+    return false;
+  }
+
+  path parent = p.parent_path();
+  BOOST_ASSERT_MSG(parent != p, "internal error: p == p.parent_path()");
+  if (!parent.empty())
+  {
+    // determine if the parent exists
+    file_status parent_status = status(parent, local_ec);
+
+    // if the parent does not exist, create the parent
+    if (parent_status.type() == file_not_found)
+    {
+      create_directories(parent, local_ec);
+      if (local_ec)
+      {
+        if (ec == 0)
+          BOOST_FILESYSTEM_THROW(filesystem_error(
+            "boost::filesystem::create_directories", parent, local_ec));
+        else
+          *ec = local_ec;
+        return false;
+      }
+    }
+  }
+
+  // create the directory
+  return create_directory(p, ec);
+}
+
+BOOST_FILESYSTEM_DECL
+bool create_directory(const path& p, error_code* ec)
+{
+  if (BOOST_CREATE_DIRECTORY(p.c_str()))
+  {
+    if (ec != 0)
+      ec->clear();
+    return true;
+  }
+
+  //  attempt to create directory failed
+  int errval(BOOST_ERRNO);  // save reason for failure
+  error_code dummy;
+
+  if (is_directory(p, dummy))
+  {
+    if (ec != 0)
+      ec->clear();
+    return false;
+  }
+
+  //  attempt to create directory failed && it doesn't already exist
+  if (ec == 0)
+    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::create_directory",
+      p, error_code(errval, system_category())));
+  else
+    ec->assign(errval, system_category());
+
+  return false;
+}
+
+BOOST_FILESYSTEM_DECL
+void create_directory_symlink(const path& to, const path& from,
+                               system::error_code* ec)
+{
+# if defined(BOOST_WINDOWS_API) && _WIN32_WINNT < 0x0600  // SDK earlier than Vista and Server 2008
+
+  error(BOOST_ERROR_NOT_SUPPORTED, to, from, ec,
+    "boost::filesystem::create_directory_symlink");
+# else
+
+#   if defined(BOOST_WINDOWS_API) && _WIN32_WINNT >= 0x0600
+      // see if actually supported by Windows runtime dll
+      if (error(!create_symbolic_link_api ? BOOST_ERROR_NOT_SUPPORTED : 0, to, from, ec,
+          "boost::filesystem::create_directory_symlink"))
+        return;
+#   endif
+
+  error(!BOOST_CREATE_SYMBOLIC_LINK(from.c_str(), to.c_str(),
+    SYMBOLIC_LINK_FLAG_DIRECTORY) ? BOOST_ERRNO : 0,
+    to, from, ec, "boost::filesystem::create_directory_symlink");
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+void create_hard_link(const path& to, const path& from, error_code* ec)
+{
+# if defined(BOOST_WINDOWS_API) && _WIN32_WINNT < 0x0500  // SDK earlier than Win 2K
+
+  error(BOOST_ERROR_NOT_SUPPORTED, to, from, ec,
+    "boost::filesystem::create_hard_link");
+# else
+
+#   if defined(BOOST_WINDOWS_API) && _WIN32_WINNT >= 0x0500
+      // see if actually supported by Windows runtime dll
+      if (error(!create_hard_link_api ? BOOST_ERROR_NOT_SUPPORTED : 0, to, from, ec,
+          "boost::filesystem::create_hard_link"))
+        return;
+#   endif
+
+  error(!BOOST_CREATE_HARD_LINK(from.c_str(), to.c_str()) ? BOOST_ERRNO : 0, to, from, ec,
+    "boost::filesystem::create_hard_link");
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+void create_symlink(const path& to, const path& from, error_code* ec)
+{
+# if defined(BOOST_WINDOWS_API) && _WIN32_WINNT < 0x0600  // SDK earlier than Vista and Server 2008
+  error(BOOST_ERROR_NOT_SUPPORTED, to, from, ec,
+    "boost::filesystem::create_directory_symlink");
+# else
+
+#   if defined(BOOST_WINDOWS_API) && _WIN32_WINNT >= 0x0600
+      // see if actually supported by Windows runtime dll
+      if (error(!create_symbolic_link_api ? BOOST_ERROR_NOT_SUPPORTED : 0, to, from, ec,
+          "boost::filesystem::create_symlink"))
+        return;
+#   endif
+
+  error(!BOOST_CREATE_SYMBOLIC_LINK(from.c_str(), to.c_str(), 0) ? BOOST_ERRNO : 0,
+    to, from, ec, "boost::filesystem::create_symlink");
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+path current_path(error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+  struct local
+  {
+    static bool getcwd_error(error_code* ec)
+    {
+      const int err = errno;
+      return error((err != ERANGE
+          // bug in some versions of the Metrowerks C lib on the Mac: wrong errno set
+#   if defined(__MSL__) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
+          && err != 0
+#   endif
+        ) ? err : 0, ec, "boost::filesystem::current_path");
+    }
+  };
+
+  path cur;
+  char small_buf[1024];
+  const char* p = ::getcwd(small_buf, sizeof(small_buf));
+  if (BOOST_LIKELY(!!p))
+  {
+    cur = p;
+    if (ec != 0) ec->clear();
+  }
+  else if (BOOST_LIKELY(!local::getcwd_error(ec)))
+  {
+    for (std::size_t path_max = sizeof(small_buf);; path_max *= 2u) // loop 'til buffer large enough
+    {
+      if (BOOST_UNLIKELY(path_max > absolute_path_max))
+      {
+        if (ec == 0)
+          BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::current_path",
+            error_code(ENAMETOOLONG, system_category())));
+        else
+          ec->assign(ENAMETOOLONG, system_category());
+        break;
+      }
+
+      boost::scoped_array<char> buf(new char[path_max]);
+      p = ::getcwd(buf.get(), path_max);
+      if (BOOST_LIKELY(!!p))
+      {
+        cur = buf.get();
+        if (ec != 0)
+          ec->clear();
+        break;
+      }
+      else if (BOOST_UNLIKELY(local::getcwd_error(ec)))
+      {
+        break;
+      }
+    }
+  }
+
+  return cur;
+
+# elif defined(UNDER_CE)
+  // Windows CE has no current directory, so everything's relative to the root of the directory tree
+  return L"\\";
+# else
+  DWORD sz;
+  if ((sz = ::GetCurrentDirectoryW(0, NULL)) == 0)sz = 1;
+  boost::scoped_array<path::value_type> buf(new path::value_type[sz]);
+  error(::GetCurrentDirectoryW(sz, buf.get()) == 0 ? BOOST_ERRNO : 0, ec,
+    "boost::filesystem::current_path");
+  return path(buf.get());
+# endif
+}
+
+
+BOOST_FILESYSTEM_DECL
+void current_path(const path& p, system::error_code* ec)
+{
+# ifdef UNDER_CE
+  error(BOOST_ERROR_NOT_SUPPORTED, p, ec,
+    "boost::filesystem::current_path");
+# else
+  error(!BOOST_SET_CURRENT_DIRECTORY(p.c_str()) ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::current_path");
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+bool equivalent(const path& p1, const path& p2, system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+  struct stat s2;
+  int e2(::stat(p2.c_str(), &s2));
+  struct stat s1;
+  int e1(::stat(p1.c_str(), &s1));
+
+  if (e1 != 0 || e2 != 0)
+  {
+    // if one is invalid and the other isn't then they aren't equivalent,
+    // but if both are invalid then it is an error
+    error (e1 != 0 && e2 != 0, p1, p2, ec, "boost::filesystem::equivalent");
+    return false;
+  }
+
+  // both stats now known to be valid
+  return  s1.st_dev == s2.st_dev && s1.st_ino == s2.st_ino
+      // According to the POSIX stat specs, "The st_ino and st_dev fields
+      // taken together uniquely identify the file within the system."
+      // Just to be sure, size and mod time are also checked.
+      && s1.st_size == s2.st_size && s1.st_mtime == s2.st_mtime;
+
+# else  // Windows
+
+  // Note well: Physical location on external media is part of the
+  // equivalence criteria. If there are no open handles, physical location
+  // can change due to defragmentation or other relocations. Thus handles
+  // must be held open until location information for both paths has
+  // been retrieved.
+
+  // p2 is done first, so any error reported is for p1
+  handle_wrapper h2(
+    create_file_handle(
+        p2.c_str(),
+        0,
+        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+        0,
+        OPEN_EXISTING,
+        FILE_FLAG_BACKUP_SEMANTICS,
+        0));
+
+  handle_wrapper h1(
+    create_file_handle(
+        p1.c_str(),
+        0,
+        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+        0,
+        OPEN_EXISTING,
+        FILE_FLAG_BACKUP_SEMANTICS,
+        0));
+
+  if (h1.handle == INVALID_HANDLE_VALUE
+    || h2.handle == INVALID_HANDLE_VALUE)
+  {
+    // if one is invalid and the other isn't, then they aren't equivalent,
+    // but if both are invalid then it is an error
+    error((h1.handle == INVALID_HANDLE_VALUE
+      && h2.handle == INVALID_HANDLE_VALUE) ? BOOST_ERROR_NOT_SUPPORTED : 0, p1, p2, ec,
+        "boost::filesystem::equivalent");
+    return false;
+  }
+
+  // at this point, both handles are known to be valid
+
+  BY_HANDLE_FILE_INFORMATION info1, info2;
+
+  if (error(!::GetFileInformationByHandle(h1.handle, &info1) ? BOOST_ERRNO : 0,
+    p1, p2, ec, "boost::filesystem::equivalent"))
+    return  false;
+
+  if (error(!::GetFileInformationByHandle(h2.handle, &info2) ? BOOST_ERRNO : 0,
+    p1, p2, ec, "boost::filesystem::equivalent"))
+    return  false;
+
+  // In theory, volume serial numbers are sufficient to distinguish between
+  // devices, but in practice VSN's are sometimes duplicated, so last write
+  // time and file size are also checked.
+  return
+    info1.dwVolumeSerialNumber == info2.dwVolumeSerialNumber
+    && info1.nFileIndexHigh == info2.nFileIndexHigh
+    && info1.nFileIndexLow == info2.nFileIndexLow
+    && info1.nFileSizeHigh == info2.nFileSizeHigh
+    && info1.nFileSizeLow == info2.nFileSizeLow
+    && info1.ftLastWriteTime.dwLowDateTime
+      == info2.ftLastWriteTime.dwLowDateTime
+    && info1.ftLastWriteTime.dwHighDateTime
+      == info2.ftLastWriteTime.dwHighDateTime;
+
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+boost::uintmax_t file_size(const path& p, error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  struct stat path_stat;
+  if (error(::stat(p.c_str(), &path_stat)!= 0 ? BOOST_ERRNO : 0,
+      p, ec, "boost::filesystem::file_size"))
+    return static_cast<boost::uintmax_t>(-1);
+  if (error(!S_ISREG(path_stat.st_mode) ? EPERM : 0,
+      p, ec, "boost::filesystem::file_size"))
+    return static_cast<boost::uintmax_t>(-1);
+
+  return static_cast<boost::uintmax_t>(path_stat.st_size);
+
+# else  // Windows
+
+  // assume uintmax_t is 64-bits on all Windows compilers
+
+  WIN32_FILE_ATTRIBUTE_DATA fad;
+
+  if (error(::GetFileAttributesExW(p.c_str(), ::GetFileExInfoStandard, &fad)== 0
+    ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::file_size"))
+        return static_cast<boost::uintmax_t>(-1);
+
+  if (error((fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)!= 0
+    ? ERROR_NOT_SUPPORTED : 0, p, ec, "boost::filesystem::file_size"))
+    return static_cast<boost::uintmax_t>(-1);
+
+  return (static_cast<boost::uintmax_t>(fad.nFileSizeHigh)
+            << (sizeof(fad.nFileSizeLow)*8)) + fad.nFileSizeLow;
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+boost::uintmax_t hard_link_count(const path& p, system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  struct stat path_stat;
+  return error(::stat(p.c_str(), &path_stat)!= 0 ? BOOST_ERRNO : 0,
+                p, ec, "boost::filesystem::hard_link_count")
+         ? 0
+         : static_cast<boost::uintmax_t>(path_stat.st_nlink);
+
+# else // Windows
+
+  // Link count info is only available through GetFileInformationByHandle
+  BY_HANDLE_FILE_INFORMATION info;
+  handle_wrapper h(
+    create_file_handle(p.c_str(), 0,
+        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
+        OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0));
+  return
+    !error(h.handle == INVALID_HANDLE_VALUE ? BOOST_ERRNO : 0,
+            p, ec, "boost::filesystem::hard_link_count")
+    && !error(::GetFileInformationByHandle(h.handle, &info)== 0 ? BOOST_ERRNO : 0,
+               p, ec, "boost::filesystem::hard_link_count")
+         ? info.nNumberOfLinks
+         : 0;
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+path initial_path(error_code* ec)
+{
+  static path init_path;
+  if (init_path.empty())
+    init_path = current_path(ec);
+  else if (ec != 0) ec->clear();
+  return init_path;
+}
+
+BOOST_FILESYSTEM_DECL
+bool is_empty(const path& p, system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  struct stat path_stat;
+  if (error(::stat(p.c_str(), &path_stat)!= 0,
+      p, ec, "boost::filesystem::is_empty"))
+    return false;
+  return S_ISDIR(path_stat.st_mode)
+    ? is_empty_directory(p, ec)
+    : path_stat.st_size == 0;
+
+# else
+
+  WIN32_FILE_ATTRIBUTE_DATA fad;
+  if (error(::GetFileAttributesExW(p.c_str(), ::GetFileExInfoStandard, &fad)== 0
+    ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::is_empty"))
+      return false;
+
+  if (ec != 0) ec->clear();
+  return
+    (fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+      ? is_empty_directory(p, ec)
+      : (!fad.nFileSizeHigh && !fad.nFileSizeLow);
+
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+std::time_t last_write_time(const path& p, system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  struct stat path_stat;
+  if (error(::stat(p.c_str(), &path_stat)!= 0 ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::last_write_time"))
+      return std::time_t(-1);
+  return path_stat.st_mtime;
+
+# else
+
+  handle_wrapper hw(
+    create_file_handle(p.c_str(), 0,
+      FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
+      OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0));
+
+  if (error(hw.handle == INVALID_HANDLE_VALUE ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::last_write_time"))
+      return std::time_t(-1);
+
+  FILETIME lwt;
+
+  if (error(::GetFileTime(hw.handle, 0, 0, &lwt)== 0 ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::last_write_time"))
+      return std::time_t(-1);
+
+  return to_time_t(lwt);
+
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+void last_write_time(const path& p, const std::time_t new_time,
+                      system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+#   if _POSIX_C_SOURCE >= 200809L
+
+  struct timespec times[2] = {};
+
+  // Keep the last access time unchanged
+  times[0].tv_nsec = UTIME_OMIT;
+
+  times[1].tv_sec = new_time;
+
+  if (BOOST_UNLIKELY(::utimensat(AT_FDCWD, p.c_str(), times, 0) != 0))
+  {
+    error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
+    return;
+  }
+
+#   else // _POSIX_C_SOURCE >= 200809L
+
+  struct stat path_stat;
+  if (error(::stat(p.c_str(), &path_stat)!= 0,
+    p, ec, "boost::filesystem::last_write_time"))
+      return;
+  ::utimbuf buf;
+  buf.actime = path_stat.st_atime; // utime()updates access time too:-(
+  buf.modtime = new_time;
+  error(::utime(p.c_str(), &buf)!= 0 ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::last_write_time");
+
+#   endif // _POSIX_C_SOURCE >= 200809L
+
+# else
+
+  handle_wrapper hw(
+    create_file_handle(p.c_str(), FILE_WRITE_ATTRIBUTES,
+      FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
+      OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0));
+
+  if (error(hw.handle == INVALID_HANDLE_VALUE ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::last_write_time"))
+      return;
+
+  FILETIME lwt;
+  to_FILETIME(new_time, lwt);
+
+  error(::SetFileTime(hw.handle, 0, 0, &lwt)== 0 ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::last_write_time");
+
+# endif
+}
+
+# ifdef BOOST_POSIX_API
+const perms active_bits(all_all | set_uid_on_exe | set_gid_on_exe | sticky_bit);
+inline mode_t mode_cast(perms prms) { return prms & active_bits; }
+# endif
+
+BOOST_FILESYSTEM_DECL
+void permissions(const path& p, perms prms, system::error_code* ec)
+{
+  BOOST_ASSERT_MSG(!((prms & add_perms) && (prms & remove_perms)),
+    "add_perms and remove_perms are mutually exclusive");
+
+  if ((prms & add_perms) && (prms & remove_perms))  // precondition failed
+    return;
+
+# ifdef BOOST_POSIX_API
+  error_code local_ec;
+  file_status current_status((prms & symlink_perms)
+                             ? fs::symlink_status(p, local_ec)
+                             : fs::status(p, local_ec));
+  if (local_ec)
+  {
+    if (ec == 0)
+    BOOST_FILESYSTEM_THROW(filesystem_error(
+        "boost::filesystem::permissions", p, local_ec));
+    else
+      *ec = local_ec;
+    return;
+  }
+
+  if (prms & add_perms)
+    prms |= current_status.permissions();
+  else if (prms & remove_perms)
+    prms = current_status.permissions() & ~prms;
+
+  // OS X <10.10, iOS <8.0 and some other platforms don't support fchmodat().
+  // Solaris (SunPro and gcc) only support fchmodat() on Solaris 11 and higher,
+  // and a runtime check is too much trouble.
+  // Linux does not support permissions on symbolic links and has no plans to
+  // support them in the future.  The chmod() code is thus more practical,
+  // rather than always hitting ENOTSUP when sending in AT_SYMLINK_NO_FOLLOW.
+  //  - See the 3rd paragraph of
+  // "Symbolic link ownership, permissions, and timestamps" at:
+  //   "http://man7.org/linux/man-pages/man7/symlink.7.html"
+  //  - See the fchmodat() Linux man page:
+  //   "http://man7.org/linux/man-pages/man2/fchmodat.2.html"
+# if defined(AT_FDCWD) && defined(AT_SYMLINK_NOFOLLOW) \
+    && !(defined(__SUNPRO_CC) || defined(__sun) || defined(sun)) \
+    && !(defined(linux) || defined(__linux) || defined(__linux__)) \
+    && !(defined(__MAC_OS_X_VERSION_MIN_REQUIRED) \
+         && __MAC_OS_X_VERSION_MIN_REQUIRED < 101000) \
+    && !(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) \
+         && __IPHONE_OS_VERSION_MIN_REQUIRED < 80000) \
+    && !(defined(__QNX__) && (_NTO_VERSION <= 700))
+  if (::fchmodat(AT_FDCWD, p.c_str(), mode_cast(prms),
+       !(prms & symlink_perms) ? 0 : AT_SYMLINK_NOFOLLOW))
+# else  // fallback if fchmodat() not supported
+  if (::chmod(p.c_str(), mode_cast(prms)))
+# endif
+  {
+    const int err = errno;
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error(
+        "boost::filesystem::permissions", p,
+        error_code(err, system::generic_category())));
+    else
+      ec->assign(err, system::generic_category());
+  }
+
+# else  // Windows
+
+  // if not going to alter FILE_ATTRIBUTE_READONLY, just return
+  if (!(!((prms & (add_perms | remove_perms)))
+    || (prms & (owner_write|group_write|others_write))))
+    return;
+
+  DWORD attr = ::GetFileAttributesW(p.c_str());
+
+  if (error(attr == 0 ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::permissions"))
+    return;
+
+  if (prms & add_perms)
+    attr &= ~FILE_ATTRIBUTE_READONLY;
+  else if (prms & remove_perms)
+    attr |= FILE_ATTRIBUTE_READONLY;
+  else if (prms & (owner_write|group_write|others_write))
+    attr &= ~FILE_ATTRIBUTE_READONLY;
+  else
+    attr |= FILE_ATTRIBUTE_READONLY;
+
+  error(::SetFileAttributesW(p.c_str(), attr) == 0 ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::permissions");
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+path read_symlink(const path& p, system::error_code* ec)
+{
+  path symlink_path;
+
+# ifdef BOOST_POSIX_API
+  const char* const path_str = p.c_str();
+  char small_buf[1024];
+  ssize_t result = ::readlink(path_str, small_buf, sizeof(small_buf));
+  if (BOOST_UNLIKELY(result < 0))
+  {
+  fail:
+    const int err = errno;
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::read_symlink",
+        p, error_code(err, system_category())));
+    else
+      ec->assign(err, system_category());
+  }
+  else if (BOOST_LIKELY(static_cast< std::size_t >(result) < sizeof(small_buf)))
+  {
+    symlink_path.assign(small_buf, small_buf + result);
+    if (ec != 0)
+      ec->clear();
+  }
+  else
+  {
+    for (std::size_t path_max = sizeof(small_buf) * 2u;; path_max *= 2u) // loop 'til buffer large enough
+    {
+      if (BOOST_UNLIKELY(path_max > absolute_path_max))
+      {
+        if (ec == 0)
+          BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::read_symlink",
+            p, error_code(ENAMETOOLONG, system_category())));
+        else
+          ec->assign(ENAMETOOLONG, system_category());
+        break;
+      }
+
+      boost::scoped_array<char> buf(new char[path_max]);
+      result = ::readlink(path_str, buf.get(), path_max);
+      if (BOOST_UNLIKELY(result < 0))
+      {
+        goto fail;
+      }
+      else if (BOOST_LIKELY(static_cast< std::size_t >(result) < path_max))
+      {
+        symlink_path.assign(buf.get(), buf.get() + result);
+        if (ec != 0) ec->clear();
+        break;
+      }
+    }
+  }
+
+# elif _WIN32_WINNT < 0x0600  // SDK earlier than Vista and Server 2008
+  error(BOOST_ERROR_NOT_SUPPORTED, p, ec,
+        "boost::filesystem::read_symlink");
+# else  // Vista and Server 2008 SDK, or later
+
+  union info_t
+  {
+    char buf[REPARSE_DATA_BUFFER_HEADER_SIZE+MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
+    REPARSE_DATA_BUFFER rdb;
+  } info;
+
+  handle_wrapper h(
+    create_file_handle(p.c_str(), GENERIC_READ, 0, 0, OPEN_EXISTING,
+      FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0));
+
+  if (error(h.handle == INVALID_HANDLE_VALUE ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::read_symlink"))
+      return symlink_path;
+
+  DWORD sz;
+
+  if (!error(::DeviceIoControl(h.handle, FSCTL_GET_REPARSE_POINT,
+        0, 0, info.buf, sizeof(info), &sz, 0) == 0 ? BOOST_ERRNO : 0, p, ec,
+        "boost::filesystem::read_symlink" ))
+    symlink_path.assign(
+      static_cast<wchar_t*>(info.rdb.SymbolicLinkReparseBuffer.PathBuffer)
+      + info.rdb.SymbolicLinkReparseBuffer.PrintNameOffset/sizeof(wchar_t),
+      static_cast<wchar_t*>(info.rdb.SymbolicLinkReparseBuffer.PathBuffer)
+      + info.rdb.SymbolicLinkReparseBuffer.PrintNameOffset/sizeof(wchar_t)
+      + info.rdb.SymbolicLinkReparseBuffer.PrintNameLength/sizeof(wchar_t));
+# endif
+  return symlink_path;
+}
+
+BOOST_FILESYSTEM_DECL
+path relative(const path& p, const path& base, error_code* ec)
+{
+  error_code tmp_ec;
+  path wc_base(weakly_canonical(base, &tmp_ec));
+  if (error(tmp_ec.value(), base, ec, "boost::filesystem::relative"))
+    return path();
+  path wc_p(weakly_canonical(p, &tmp_ec));
+  if (error(tmp_ec.value(), base, ec, "boost::filesystem::relative"))
+    return path();
+  return wc_p.lexically_relative(wc_base);
+}
+
+BOOST_FILESYSTEM_DECL
+bool remove(const path& p, error_code* ec)
+{
+  error_code tmp_ec;
+  file_type type = query_file_type(p, &tmp_ec);
+  if (error(type == status_error ? tmp_ec.value() : 0, p, ec,
+      "boost::filesystem::remove"))
+    return false;
+
+  // Since POSIX remove() is specified to work with either files or directories, in a
+  // perfect world it could just be called. But some important real-world operating
+  // systems (Windows, Mac OS X, for example) don't implement the POSIX spec. So
+  // remove_file_or_directory() is always called to keep it simple.
+  return remove_file_or_directory(p, type, ec);
+}
+
+BOOST_FILESYSTEM_DECL
+boost::uintmax_t remove_all(const path& p, error_code* ec)
+{
+  error_code tmp_ec;
+  file_type type = query_file_type(p, &tmp_ec);
+  if (error(type == status_error ? tmp_ec.value() : 0, p, ec,
+    "boost::filesystem::remove_all"))
+    return 0;
+
+  return (type != status_error && type != file_not_found) // exists
+    ? remove_all_aux(p, type, ec)
+    : 0;
+}
+
+BOOST_FILESYSTEM_DECL
+void rename(const path& old_p, const path& new_p, error_code* ec)
+{
+  error(!BOOST_MOVE_FILE(old_p.c_str(), new_p.c_str()) ? BOOST_ERRNO : 0, old_p, new_p,
+    ec, "boost::filesystem::rename");
+}
+
+BOOST_FILESYSTEM_DECL
+void resize_file(const path& p, uintmax_t size, system::error_code* ec)
+{
+# if defined(BOOST_POSIX_API)
+  if (BOOST_UNLIKELY(size > static_cast< uintmax_t >((std::numeric_limits< off_t >::max)()))) {
+    error(system::errc::file_too_large, p, ec, "boost::filesystem::resize_file");
+    return;
+  }
+# endif
+  error(!BOOST_RESIZE_FILE(p.c_str(), size) ? BOOST_ERRNO : 0, p, ec,
+    "boost::filesystem::resize_file");
+}
+
+BOOST_FILESYSTEM_DECL
+space_info space(const path& p, error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+  struct BOOST_STATVFS vfs;
+  space_info info;
+  if (!error(::BOOST_STATVFS(p.c_str(), &vfs) ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::space"))
+  {
+    info.capacity
+      = static_cast<boost::uintmax_t>(vfs.f_blocks)* BOOST_STATVFS_F_FRSIZE;
+    info.free
+      = static_cast<boost::uintmax_t>(vfs.f_bfree)* BOOST_STATVFS_F_FRSIZE;
+    info.available
+      = static_cast<boost::uintmax_t>(vfs.f_bavail)* BOOST_STATVFS_F_FRSIZE;
+  }
+
+# else
+
+  ULARGE_INTEGER avail, total, free;
+  space_info info;
+
+  if (!error(::GetDiskFreeSpaceExW(p.c_str(), &avail, &total, &free)== 0,
+     p, ec, "boost::filesystem::space"))
+  {
+    info.capacity
+      = (static_cast<boost::uintmax_t>(total.HighPart)<< 32)
+        + total.LowPart;
+    info.free
+      = (static_cast<boost::uintmax_t>(free.HighPart)<< 32)
+        + free.LowPart;
+    info.available
+      = (static_cast<boost::uintmax_t>(avail.HighPart)<< 32)
+        + avail.LowPart;
+  }
+
+# endif
+
+  else
+  {
+    info.capacity = info.free = info.available = 0;
+  }
+  return info;
+}
+
+BOOST_FILESYSTEM_DECL
+file_status status(const path& p, error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  struct stat path_stat;
+  if (::stat(p.c_str(), &path_stat)!= 0)
+  {
+    const int err = errno;
+    if (ec != 0)                            // always report errno, even though some
+      ec->assign(err, system_category());   // errno values are not status_errors
+
+    if (not_found_error(err))
+    {
+      return fs::file_status(fs::file_not_found, fs::no_perms);
+    }
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::status",
+        p, error_code(err, system_category())));
+    return fs::file_status(fs::status_error);
+  }
+  if (ec != 0) ec->clear();;
+  if (S_ISDIR(path_stat.st_mode))
+    return fs::file_status(fs::directory_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISREG(path_stat.st_mode))
+    return fs::file_status(fs::regular_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISBLK(path_stat.st_mode))
+    return fs::file_status(fs::block_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISCHR(path_stat.st_mode))
+    return fs::file_status(fs::character_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISFIFO(path_stat.st_mode))
+    return fs::file_status(fs::fifo_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISSOCK(path_stat.st_mode))
+    return fs::file_status(fs::socket_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  return fs::file_status(fs::type_unknown);
+
+# else  // Windows
+
+  DWORD attr(::GetFileAttributesW(p.c_str()));
+  if (attr == 0xFFFFFFFF)
+  {
+    return process_status_failure(p, ec);
+  }
+
+  perms permissions = make_permissions(p, attr);
+
+  //  reparse point handling;
+  //    since GetFileAttributesW does not resolve symlinks, try to open a file
+  //    handle to discover if the file exists
+  if (attr & FILE_ATTRIBUTE_REPARSE_POINT)
+  {
+    handle_wrapper h(
+      create_file_handle(
+          p.c_str(),
+          0,  // dwDesiredAccess; attributes only
+          FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
+          0,  // lpSecurityAttributes
+          OPEN_EXISTING,
+          FILE_FLAG_BACKUP_SEMANTICS,
+          0)); // hTemplateFile
+    if (h.handle == INVALID_HANDLE_VALUE)
+    {
+      return process_status_failure(p, ec);
+    }
+
+    if (!is_reparse_point_a_symlink(p))
+      return file_status(reparse_file, permissions);
+  }
+
+  if (ec != 0) ec->clear();
+  return (attr & FILE_ATTRIBUTE_DIRECTORY)
+    ? file_status(directory_file, permissions)
+    : file_status(regular_file, permissions);
+
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+file_status symlink_status(const path& p, error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  struct stat path_stat;
+  if (::lstat(p.c_str(), &path_stat)!= 0)
+  {
+    const int err = errno;
+    if (ec != 0)                            // always report errno, even though some
+      ec->assign(err, system_category());   // errno values are not status_errors
+
+    if (not_found_error(err)) // these are not errors
+    {
+      return fs::file_status(fs::file_not_found, fs::no_perms);
+    }
+    if (ec == 0)
+      BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::status",
+        p, error_code(err, system_category())));
+    return fs::file_status(fs::status_error);
+  }
+  if (ec != 0) ec->clear();
+  if (S_ISREG(path_stat.st_mode))
+    return fs::file_status(fs::regular_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISDIR(path_stat.st_mode))
+    return fs::file_status(fs::directory_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISLNK(path_stat.st_mode))
+    return fs::file_status(fs::symlink_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISBLK(path_stat.st_mode))
+    return fs::file_status(fs::block_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISCHR(path_stat.st_mode))
+    return fs::file_status(fs::character_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISFIFO(path_stat.st_mode))
+    return fs::file_status(fs::fifo_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  if (S_ISSOCK(path_stat.st_mode))
+    return fs::file_status(fs::socket_file,
+      static_cast<perms>(path_stat.st_mode) & fs::perms_mask);
+  return fs::file_status(fs::type_unknown);
+
+# else  // Windows
+
+  DWORD attr(::GetFileAttributesW(p.c_str()));
+  if (attr == 0xFFFFFFFF)
+  {
+    return process_status_failure(p, ec);
+  }
+
+  if (ec != 0) ec->clear();
+
+  perms permissions = make_permissions(p, attr);
+
+  if (attr & FILE_ATTRIBUTE_REPARSE_POINT)
+    return is_reparse_point_a_symlink(p)
+           ? file_status(symlink_file, permissions)
+           : file_status(reparse_file, permissions);
+
+  return (attr & FILE_ATTRIBUTE_DIRECTORY)
+    ? file_status(directory_file, permissions)
+    : file_status(regular_file, permissions);
+
+# endif
+}
+
+ // contributed by Jeff Flinn
+BOOST_FILESYSTEM_DECL
+path temp_directory_path(system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+  const char* val = 0;
+
+  (val = std::getenv("TMPDIR" )) ||
+  (val = std::getenv("TMP"    )) ||
+  (val = std::getenv("TEMP"   )) ||
+  (val = std::getenv("TEMPDIR"));
+
+#   ifdef __ANDROID__
+  const char* default_tmp = "/data/local/tmp";
+#   else
+  const char* default_tmp = "/tmp";
+#   endif
+  path p((val != NULL) ? val : default_tmp);
+
+  if (p.empty() || (ec && !is_directory(p, *ec)) || (!ec && !is_directory(p)))
+  {
+    error(ENOTDIR, p, ec, "boost::filesystem::temp_directory_path");
+    return p;
+  }
+
+  return p;
+
+# else  // Windows
+
+  const wchar_t* tmp_env = L"TMP";
+  const wchar_t* temp_env = L"TEMP";
+  const wchar_t* localappdata_env = L"LOCALAPPDATA";
+  const wchar_t* userprofile_env = L"USERPROFILE";
+  const wchar_t* env_list[] = { tmp_env, temp_env, localappdata_env, userprofile_env };
+
+  path p;
+  for (unsigned int i = 0; i < sizeof(env_list) / sizeof(*env_list); ++i)
+  {
+    std::wstring env = wgetenv(env_list[i]);
+    if (!env.empty())
+    {
+      p = env;
+      if (i >= 2)
+        p /= L"Temp";
+      error_code lcl_ec;
+      if (exists(p, lcl_ec) && !lcl_ec && is_directory(p, lcl_ec) && !lcl_ec)
+        break;
+      p.clear();
+    }
+  }
+
+  if (p.empty())
+  {
+    // use a separate buffer since in C++03 a string is not required to be contiguous
+    const UINT size = ::GetWindowsDirectoryW(NULL, 0);
+    if (BOOST_UNLIKELY(size == 0))
+    {
+    getwindir_error:
+      int errval = ::GetLastError();
+      error(errval, ec, "boost::filesystem::temp_directory_path");
+      return path();
+    }
+
+    boost::scoped_array<wchar_t> buf(new wchar_t[size]);
+    if (BOOST_UNLIKELY(::GetWindowsDirectoryW(buf.get(), size) == 0))
+      goto getwindir_error;
+
+    p = buf.get();  // do not depend on initial buf size, see ticket #10388
+    p /= L"Temp";
+  }
+
+  return p;
+
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+path system_complete(const path& p, system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+  return (p.empty() || p.is_absolute())
+    ? p : current_path() / p;
+
+# else
+  if (p.empty())
+  {
+    if (ec != 0) ec->clear();
+    return p;
+  }
+  wchar_t buf[buf_size];
+  wchar_t* pfn;
+  std::size_t len = get_full_path_name(p, buf_size, buf, &pfn);
+
+  if (error(len == 0 ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::system_complete"))
+    return path();
+
+  if (len < buf_size)// len does not include null termination character
+    return path(&buf[0]);
+
+  boost::scoped_array<wchar_t> big_buf(new wchar_t[len]);
+
+  return error(get_full_path_name(p, len , big_buf.get(), &pfn)== 0 ? BOOST_ERRNO : 0,
+    p, ec, "boost::filesystem::system_complete")
+    ? path()
+    : path(big_buf.get());
+# endif
+}
+
+BOOST_FILESYSTEM_DECL
+path weakly_canonical(const path& p, system::error_code* ec)
+{
+  path head(p);
+  path tail;
+  system::error_code tmp_ec;
+  path::iterator itr = p.end();
+
+  for (; !head.empty(); --itr)
+  {
+    file_status head_status = status(head, tmp_ec);
+    if (error(head_status.type() == fs::status_error,
+      head, ec, "boost::filesystem::weakly_canonical"))
+      return path();
+    if (head_status.type() != fs::file_not_found)
+      break;
+    head.remove_filename();
+  }
+
+  bool tail_has_dots = false;
+  for (; itr != p.end(); ++itr)
+  {
+    tail /= *itr;
+    // for a later optimization, track if any dot or dot-dot elements are present
+    if (itr->native().size() <= 2
+      && itr->native()[0] == dot
+      && (itr->native().size() == 1 || itr->native()[1] == dot))
+      tail_has_dots = true;
+  }
+
+  if (head.empty())
+    return p.lexically_normal();
+  head = canonical(head, tmp_ec);
+  if (error(tmp_ec.value(), head, ec, "boost::filesystem::weakly_canonical"))
+    return path();
+  return tail.empty()
+    ? head
+    : (tail_has_dots  // optimization: only normalize if tail had dot or dot-dot element
+        ? (head/tail).lexically_normal()
+        : head/tail);
+}
+
+} // namespace detail
+} // namespace filesystem
+} // namespace boost
diff --git a/src/boost/libs/filesystem/src/path.cpp b/src/boost/libs/filesystem/src/path.cpp
new file mode 100644
index 00000000..590f0296
--- /dev/null
+++ b/src/boost/libs/filesystem/src/path.cpp
@@ -0,0 +1,958 @@
+//  filesystem path.cpp  -------------------------------------------------------------  //
+
+//  Copyright Beman Dawes 2008
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+// Include Boost.Predef first so that windows.h is guaranteed to be not included
+#include <boost/predef/os/windows.h>
+#if BOOST_OS_WINDOWS
+#include <boost/winapi/config.hpp>
+#endif
+
+//  Old standard library configurations, particularly MingGW, don't support wide strings.
+//  Report this with an explicit error message.
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem/operations.hpp>  // for filesystem_error
+#include <boost/scoped_array.hpp>
+#include <boost/system/error_code.hpp>
+#include <boost/assert.hpp>
+#include <algorithm>
+#include <iterator>
+#include <utility>
+#include <cstddef>
+#include <cstring>
+#include <cassert>
+
+#ifdef BOOST_WINDOWS_API
+# include "windows_file_codecvt.hpp"
+# include <windows.h>
+#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) \
+ || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
+# include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
+#endif
+
+#ifdef BOOST_FILESYSTEM_DEBUG
+# include <iostream>
+# include <iomanip>
+#endif
+
+namespace fs = boost::filesystem;
+
+using boost::filesystem::path;
+
+using std::string;
+using std::wstring;
+
+using boost::system::error_code;
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                class path helpers                                    //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+namespace
+{
+  //------------------------------------------------------------------------------------//
+  //                        miscellaneous class path helpers                            //
+  //------------------------------------------------------------------------------------//
+
+  typedef path::value_type        value_type;
+  typedef path::string_type       string_type;
+  typedef string_type::size_type  size_type;
+
+# ifdef BOOST_WINDOWS_API
+
+  const wchar_t* const separators = L"/\\";
+  const wchar_t* separator_string = L"/";
+  const wchar_t* preferred_separator_string = L"\\";
+  const wchar_t colon = L':';
+  const wchar_t questionmark = L'?';
+
+  inline bool is_letter(wchar_t c)
+  {
+    return (c >= L'a' && c <=L'z') || (c >= L'A' && c <=L'Z');
+  }
+
+# else
+
+  const char* const separators = "/";
+  const char* separator_string = "/";
+  const char* preferred_separator_string = "/";
+
+# endif
+
+  bool is_root_separator(const string_type& str, size_type pos);
+    // pos is position of the separator
+
+  size_type filename_pos(const string_type& str,
+                          size_type end_pos); // end_pos is past-the-end position
+  //  Returns: 0 if str itself is filename (or empty)
+
+  size_type root_directory_start(const string_type& path, size_type size);
+  //  Returns:  npos if no root_directory found
+
+  void first_element(
+      const string_type& src,
+      size_type& element_pos,
+      size_type& element_size,
+#     if !BOOST_WORKAROUND(BOOST_MSVC, <= 1310) // VC++ 7.1
+      size_type size = string_type::npos
+#     else
+      size_type size = -1
+#     endif
+    );
+
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                            class path implementation                                 //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+namespace boost
+{
+namespace filesystem
+{
+
+  BOOST_FILESYSTEM_DECL path& path::operator/=(const path& p)
+  {
+    if (p.empty())
+      return *this;
+    if (this == &p)  // self-append
+    {
+      path rhs(p);
+      if (!detail::is_directory_separator(rhs.m_pathname[0]))
+        m_append_separator_if_needed();
+      m_pathname += rhs.m_pathname;
+    }
+    else
+    {
+      if (!detail::is_directory_separator(*p.m_pathname.begin()))
+        m_append_separator_if_needed();
+      m_pathname += p.m_pathname;
+    }
+    return *this;
+  }
+
+  BOOST_FILESYSTEM_DECL path& path::operator/=(const value_type* ptr)
+  {
+    if (!*ptr)
+      return *this;
+    if (ptr >= m_pathname.data()
+      && ptr < m_pathname.data() + m_pathname.size())  // overlapping source
+    {
+      path rhs(ptr);
+      if (!detail::is_directory_separator(rhs.m_pathname[0]))
+        m_append_separator_if_needed();
+      m_pathname += rhs.m_pathname;
+    }
+    else
+    {
+      if (!detail::is_directory_separator(*ptr))
+        m_append_separator_if_needed();
+      m_pathname += ptr;
+    }
+    return *this;
+  }
+
+# ifdef BOOST_WINDOWS_API
+
+  BOOST_FILESYSTEM_DECL path path::generic_path() const
+  {
+    path tmp(*this);
+    std::replace(tmp.m_pathname.begin(), tmp.m_pathname.end(), L'\\', L'/');
+    return tmp;
+  }
+
+# endif  // BOOST_WINDOWS_API
+
+  BOOST_FILESYSTEM_DECL int path::compare(const path& p) const BOOST_NOEXCEPT
+  {
+    return detail::lex_compare(begin(), end(), p.begin(), p.end());
+  }
+
+  //  m_append_separator_if_needed  ----------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL path::string_type::size_type path::m_append_separator_if_needed()
+  {
+    if (!m_pathname.empty() &&
+#     ifdef BOOST_WINDOWS_API
+      *(m_pathname.end()-1) != colon &&
+#     endif
+      !detail::is_directory_separator(*(m_pathname.end()-1)))
+    {
+      string_type::size_type tmp(m_pathname.size());
+      m_pathname += preferred_separator;
+      return tmp;
+    }
+    return 0;
+  }
+
+  //  m_erase_redundant_separator  -----------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL void path::m_erase_redundant_separator(string_type::size_type sep_pos)
+  {
+    if (sep_pos                         // a separator was added
+      && sep_pos < m_pathname.size()         // and something was appended
+      && (m_pathname[sep_pos+1] == separator // and it was also separator
+#      ifdef BOOST_WINDOWS_API
+       || m_pathname[sep_pos+1] == preferred_separator  // or preferred_separator
+#      endif
+)) { m_pathname.erase(sep_pos, 1); } // erase the added separator
+  }
+
+  //  modifiers  -----------------------------------------------------------------------//
+
+# ifdef BOOST_WINDOWS_API
+  BOOST_FILESYSTEM_DECL path& path::make_preferred()
+  {
+    std::replace(m_pathname.begin(), m_pathname.end(), L'/', L'\\');
+    return *this;
+  }
+# endif
+
+  BOOST_FILESYSTEM_DECL path& path::remove_filename()
+  {
+    m_pathname.erase(m_parent_path_end());
+    return *this;
+  }
+
+  BOOST_FILESYSTEM_DECL path& path::remove_trailing_separator()
+  {
+    if (!m_pathname.empty()
+      && detail::is_directory_separator(m_pathname[m_pathname.size() - 1]))
+      m_pathname.erase(m_pathname.size() - 1);
+    return *this;
+  }
+
+  BOOST_FILESYSTEM_DECL path& path::replace_extension(const path& new_extension)
+  {
+    // erase existing extension, including the dot, if any
+    m_pathname.erase(m_pathname.size()-extension().m_pathname.size());
+
+    if (!new_extension.empty())
+    {
+      // append new_extension, adding the dot if necessary
+      if (new_extension.m_pathname[0] != dot)
+        m_pathname.push_back(dot);
+      m_pathname.append(new_extension.m_pathname);
+    }
+
+    return *this;
+  }
+
+  //  decomposition  -------------------------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL path path::root_path() const
+  {
+    path temp(root_name());
+    if (!root_directory().empty()) temp.m_pathname += root_directory().c_str();
+    return temp;
+  }
+
+  BOOST_FILESYSTEM_DECL path path::root_name() const
+  {
+    iterator itr(begin());
+
+    return (itr.m_pos != m_pathname.size()
+      && (
+          (itr.m_element.m_pathname.size() > 1
+            && detail::is_directory_separator(itr.m_element.m_pathname[0])
+            && detail::is_directory_separator(itr.m_element.m_pathname[1]))
+#       ifdef BOOST_WINDOWS_API
+          || itr.m_element.m_pathname[itr.m_element.m_pathname.size()-1] == colon
+#       endif
+      ))
+      ? itr.m_element
+      : path();
+  }
+
+  BOOST_FILESYSTEM_DECL path path::root_directory() const
+  {
+    size_type pos(root_directory_start(m_pathname, m_pathname.size()));
+
+    return pos == string_type::npos
+      ? path()
+      : path(m_pathname.c_str() + pos, m_pathname.c_str() + pos + 1);
+  }
+
+  BOOST_FILESYSTEM_DECL path path::relative_path() const
+  {
+    iterator itr(begin());
+
+    for (; itr.m_pos != m_pathname.size()
+      && (detail::is_directory_separator(itr.m_element.m_pathname[0])
+#     ifdef BOOST_WINDOWS_API
+      || itr.m_element.m_pathname[itr.m_element.m_pathname.size()-1] == colon
+#     endif
+    ); ++itr) {}
+
+    return path(m_pathname.c_str() + itr.m_pos);
+  }
+
+  BOOST_FILESYSTEM_DECL string_type::size_type path::m_parent_path_end() const
+  {
+    size_type end_pos(filename_pos(m_pathname, m_pathname.size()));
+
+    bool filename_was_separator(m_pathname.size()
+      && detail::is_directory_separator(m_pathname[end_pos]));
+
+    // skip separators unless root directory
+    size_type root_dir_pos(root_directory_start(m_pathname, end_pos));
+    for (;
+      end_pos > 0
+      && (end_pos-1) != root_dir_pos
+      && detail::is_directory_separator(m_pathname[end_pos-1])
+      ;
+      --end_pos) {}
+
+   return (end_pos == 1 && root_dir_pos == 0 && filename_was_separator)
+     ? string_type::npos
+     : end_pos;
+  }
+
+  BOOST_FILESYSTEM_DECL path path::parent_path() const
+  {
+   size_type end_pos(m_parent_path_end());
+   return end_pos == string_type::npos
+     ? path()
+     : path(m_pathname.c_str(), m_pathname.c_str() + end_pos);
+  }
+
+  BOOST_FILESYSTEM_DECL path path::filename() const
+  {
+    size_type pos(filename_pos(m_pathname, m_pathname.size()));
+    return (m_pathname.size()
+              && pos
+              && detail::is_directory_separator(m_pathname[pos])
+              && !is_root_separator(m_pathname, pos))
+      ? detail::dot_path()
+      : path(m_pathname.c_str() + pos);
+  }
+
+  BOOST_FILESYSTEM_DECL path path::stem() const
+  {
+    path name(filename());
+    if (name == detail::dot_path() || name == detail::dot_dot_path()) return name;
+    size_type pos(name.m_pathname.rfind(dot));
+    return pos == string_type::npos
+      ? name
+      : path(name.m_pathname.c_str(), name.m_pathname.c_str() + pos);
+  }
+
+  BOOST_FILESYSTEM_DECL path path::extension() const
+  {
+    path name(filename());
+    if (name == detail::dot_path() || name == detail::dot_dot_path()) return path();
+    size_type pos(name.m_pathname.rfind(dot));
+    return pos == string_type::npos
+      ? path()
+      : path(name.m_pathname.c_str() + pos);
+  }
+
+  //  lexical operations  --------------------------------------------------------------//
+
+  namespace detail
+  {
+    // C++14 provides a mismatch algorithm with four iterator arguments(), but earlier
+    // standard libraries didn't, so provide this needed functionality.
+    inline
+    std::pair<path::iterator, path::iterator> mismatch(path::iterator it1,
+      path::iterator it1end, path::iterator it2, path::iterator it2end)
+    {
+      for (; it1 != it1end && it2 != it2end && *it1 == *it2;)
+      {
+        ++it1;
+        ++it2;
+      }
+      return std::make_pair(it1, it2);
+    }
+  }
+
+  BOOST_FILESYSTEM_DECL path path::lexically_relative(const path& base) const
+  {
+    path::iterator b = begin(), e = end(), base_b = base.begin(), base_e = base.end();
+    std::pair<path::iterator, path::iterator> mm = detail::mismatch(b, e, base_b, base_e);
+    if (mm.first == b && mm.second == base_b)
+      return path();
+    if (mm.first == e && mm.second == base_e)
+      return detail::dot_path();
+
+    std::ptrdiff_t n = 0;
+    for (; mm.second != base_e; ++mm.second)
+    {
+      path const& p = *mm.second;
+      if (p == detail::dot_dot_path())
+        --n;
+      else if (!p.empty() && p != detail::dot_path())
+        ++n;
+    }
+    if (n < 0)
+      return path();
+    if (n == 0 && (mm.first == e || mm.first->empty()))
+      return detail::dot_path();
+
+    path tmp;
+    for (; n > 0; --n)
+      tmp /= detail::dot_dot_path();
+    for (; mm.first != e; ++mm.first)
+      tmp /= *mm.first;
+    return tmp;
+  }
+
+  //  normal  --------------------------------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL path path::lexically_normal() const
+  {
+    if (m_pathname.empty())
+      return *this;
+
+    path temp;
+    iterator start(begin());
+    iterator last(end());
+    iterator stop(last--);
+    for (iterator itr(start); itr != stop; ++itr)
+    {
+      // ignore "." except at start and last
+      if (itr->native().size() == 1
+        && (itr->native())[0] == dot
+        && itr != start
+        && itr != last) continue;
+
+      // ignore a name and following ".."
+      if (!temp.empty()
+        && itr->native().size() == 2
+        && (itr->native())[0] == dot
+        && (itr->native())[1] == dot) // dot dot
+      {
+        string_type lf(temp.filename().native());
+        if (lf.size() > 0
+          && (lf.size() != 1
+            || (lf[0] != dot
+              && lf[0] != separator))
+          && (lf.size() != 2
+            || (lf[0] != dot
+              && lf[1] != dot
+#             ifdef BOOST_WINDOWS_API
+              && lf[1] != colon
+#             endif
+               )
+             )
+          )
+        {
+          temp.remove_filename();
+          //// if not root directory, must also remove "/" if any
+          //if (temp.native().size() > 0
+          //  && temp.native()[temp.native().size()-1]
+          //    == separator)
+          //{
+          //  string_type::size_type rds(
+          //    root_directory_start(temp.native(), temp.native().size()));
+          //  if (rds == string_type::npos
+          //    || rds != temp.native().size()-1)
+          //  {
+          //    temp.m_pathname.erase(temp.native().size()-1);
+          //  }
+          //}
+
+          iterator next(itr);
+          if (temp.empty() && ++next != stop
+            && next == last && *last == detail::dot_path())
+          {
+            temp /= detail::dot_path();
+          }
+          continue;
+        }
+      }
+
+      temp /= *itr;
+    };
+
+    if (temp.empty())
+      temp /= detail::dot_path();
+    return temp;
+  }
+
+}  // namespace filesystem
+}  // namespace boost
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                         class path helpers implementation                            //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+namespace
+{
+
+  //  is_root_separator  ---------------------------------------------------------------//
+
+  bool is_root_separator(const string_type & str, size_type pos)
+    // pos is position of the separator
+  {
+    BOOST_ASSERT_MSG(!str.empty() && fs::detail::is_directory_separator(str[pos]),
+      "precondition violation");
+
+    // subsequent logic expects pos to be for leftmost slash of a set
+    while (pos > 0 && fs::detail::is_directory_separator(str[pos-1]))
+      --pos;
+
+    //  "/" [...]
+    if (pos == 0)
+      return true;
+
+# ifdef BOOST_WINDOWS_API
+    //  "c:/" [...]
+    if (pos == 2 && is_letter(str[0]) && str[1] == colon)
+      return true;
+# endif
+
+    //  "//" name "/"
+    if (pos < 3 || !fs::detail::is_directory_separator(str[0])
+      || !fs::detail::is_directory_separator(str[1]))
+      return false;
+
+    return str.find_first_of(separators, 2) == pos;
+  }
+
+  //  filename_pos  --------------------------------------------------------------------//
+
+  size_type filename_pos(const string_type & str,
+                          size_type end_pos) // end_pos is past-the-end position
+    // return 0 if str itself is filename (or empty)
+  {
+    // case: "//"
+    if (end_pos == 2
+      && fs::detail::is_directory_separator(str[0])
+      && fs::detail::is_directory_separator(str[1])) return 0;
+
+    // case: ends in "/"
+    if (end_pos && fs::detail::is_directory_separator(str[end_pos-1]))
+      return end_pos-1;
+
+    // set pos to start of last element
+    size_type pos(str.find_last_of(separators, end_pos-1));
+
+#   ifdef BOOST_WINDOWS_API
+    if (pos == string_type::npos && end_pos > 1)
+      pos = str.find_last_of(colon, end_pos-2);
+#   endif
+
+    return (pos == string_type::npos // path itself must be a filename (or empty)
+      || (pos == 1 && fs::detail::is_directory_separator(str[0]))) // or net
+        ? 0 // so filename is entire string
+        : pos + 1; // or starts after delimiter
+  }
+
+  //  root_directory_start  ------------------------------------------------------------//
+
+  size_type root_directory_start(const string_type & path, size_type size)
+  // return npos if no root_directory found
+  {
+
+#   ifdef BOOST_WINDOWS_API
+    // case "c:/"
+    if (size > 2
+      && path[1] == colon
+      && fs::detail::is_directory_separator(path[2])) return 2;
+#   endif
+
+    // case "//"
+    if (size == 2
+      && fs::detail::is_directory_separator(path[0])
+      && fs::detail::is_directory_separator(path[1])) return string_type::npos;
+
+#   ifdef BOOST_WINDOWS_API
+    // case "\\?\"
+    if (size > 4
+      && fs::detail::is_directory_separator(path[0])
+      && fs::detail::is_directory_separator(path[1])
+      && path[2] == questionmark
+      && fs::detail::is_directory_separator(path[3]))
+    {
+      string_type::size_type pos(path.find_first_of(separators, 4));
+        return pos < size ? pos : string_type::npos;
+    }
+#   endif
+
+    // case "//net {/}"
+    if (size > 3
+      && fs::detail::is_directory_separator(path[0])
+      && fs::detail::is_directory_separator(path[1])
+      && !fs::detail::is_directory_separator(path[2]))
+    {
+      string_type::size_type pos(path.find_first_of(separators, 2));
+      return pos < size ? pos : string_type::npos;
+    }
+
+    // case "/"
+    if (size > 0 && fs::detail::is_directory_separator(path[0])) return 0;
+
+    return string_type::npos;
+  }
+
+  //  first_element --------------------------------------------------------------------//
+  //   sets pos and len of first element, excluding extra separators
+  //   if src.empty(), sets pos,len, to 0,0.
+
+  void first_element(
+      const string_type & src,
+      size_type & element_pos,
+      size_type & element_size,
+      size_type size
+)
+  {
+    if (size == string_type::npos) size = src.size();
+    element_pos = 0;
+    element_size = 0;
+    if (src.empty()) return;
+
+    string_type::size_type cur(0);
+
+    // deal with // [network]
+    if (size >= 2 && fs::detail::is_directory_separator(src[0])
+      && fs::detail::is_directory_separator(src[1])
+      && (size == 2
+        || !fs::detail::is_directory_separator(src[2])))
+    {
+      cur += 2;
+      element_size += 2;
+    }
+
+    // leading (not non-network) separator
+    else if (fs::detail::is_directory_separator(src[0]))
+    {
+      ++element_size;
+      // bypass extra leading separators
+      while (cur+1 < size
+        && fs::detail::is_directory_separator(src[cur+1]))
+      {
+        ++cur;
+        ++element_pos;
+      }
+      return;
+    }
+
+    // at this point, we have either a plain name, a network name,
+    // or (on Windows only) a device name
+
+    // find the end
+    while (cur < size
+#     ifdef BOOST_WINDOWS_API
+      && src[cur] != colon
+#     endif
+      && !fs::detail::is_directory_separator(src[cur]))
+    {
+      ++cur;
+      ++element_size;
+    }
+
+#   ifdef BOOST_WINDOWS_API
+    if (cur == size) return;
+    // include device delimiter
+    if (src[cur] == colon)
+      { ++element_size; }
+#   endif
+
+    return;
+  }
+
+}  // unnamed namespace
+
+
+namespace boost
+{
+namespace filesystem
+{
+  namespace detail
+  {
+    BOOST_FILESYSTEM_DECL
+    int lex_compare(path::iterator first1, path::iterator last1,
+        path::iterator first2, path::iterator last2)
+    {
+      for (; first1 != last1 && first2 != last2;)
+      {
+        if (first1->native() < first2->native()) return -1;
+        if (first2->native() < first1->native()) return 1;
+        BOOST_ASSERT(first2->native() == first1->native());
+        ++first1;
+        ++first2;
+      }
+      if (first1 == last1 && first2 == last2)
+        return 0;
+      return first1 == last1 ? -1 : 1;
+    }
+
+    BOOST_FILESYSTEM_DECL
+    const path&  dot_path()
+    {
+#   ifdef BOOST_WINDOWS_API
+      static const fs::path dot_pth(L".");
+#   else
+      static const fs::path dot_pth(".");
+#   endif
+      return dot_pth;
+    }
+
+    BOOST_FILESYSTEM_DECL
+    const path&  dot_dot_path()
+    {
+#   ifdef BOOST_WINDOWS_API
+      static const fs::path dot_dot(L"..");
+#   else
+      static const fs::path dot_dot("..");
+#   endif
+      return dot_dot;
+    }
+  }
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                        class path::iterator implementation                           //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL path::iterator path::begin() const
+  {
+    iterator itr;
+    itr.m_path_ptr = this;
+    size_type element_size;
+    first_element(m_pathname, itr.m_pos, element_size);
+    itr.m_element = m_pathname.substr(itr.m_pos, element_size);
+    if (itr.m_element.m_pathname == preferred_separator_string)
+      itr.m_element.m_pathname = separator_string;  // needed for Windows, harmless on POSIX
+    return itr;
+  }
+
+  BOOST_FILESYSTEM_DECL path::iterator path::end() const
+  {
+    iterator itr;
+    itr.m_path_ptr = this;
+    itr.m_pos = m_pathname.size();
+    return itr;
+  }
+
+  BOOST_FILESYSTEM_DECL void path::m_path_iterator_increment(path::iterator & it)
+  {
+    BOOST_ASSERT_MSG(it.m_pos < it.m_path_ptr->m_pathname.size(),
+      "path::basic_iterator increment past end()");
+
+    // increment to position past current element; if current element is implicit dot,
+    // this will cause it.m_pos to represent the end iterator
+    it.m_pos += it.m_element.m_pathname.size();
+
+    // if the end is reached, we are done
+    if (it.m_pos == it.m_path_ptr->m_pathname.size())
+    {
+      it.m_element.clear();  // aids debugging, may release unneeded memory
+      return;
+    }
+
+    // both POSIX and Windows treat paths that begin with exactly two separators specially
+    bool was_net(it.m_element.m_pathname.size() > 2
+      && detail::is_directory_separator(it.m_element.m_pathname[0])
+      && detail::is_directory_separator(it.m_element.m_pathname[1])
+      && !detail::is_directory_separator(it.m_element.m_pathname[2]));
+
+    // process separator (Windows drive spec is only case not a separator)
+    if (detail::is_directory_separator(it.m_path_ptr->m_pathname[it.m_pos]))
+    {
+      // detect root directory
+      if (was_net
+#       ifdef BOOST_WINDOWS_API
+        // case "c:/"
+        || it.m_element.m_pathname[it.m_element.m_pathname.size()-1] == colon
+#       endif
+         )
+      {
+        it.m_element.m_pathname = separator;  // generic format; see docs
+        return;
+      }
+
+      // skip separators until it.m_pos points to the start of the next element
+      while (it.m_pos != it.m_path_ptr->m_pathname.size()
+        && detail::is_directory_separator(it.m_path_ptr->m_pathname[it.m_pos]))
+        { ++it.m_pos; }
+
+      // detect trailing separator, and treat it as ".", per POSIX spec
+      if (it.m_pos == it.m_path_ptr->m_pathname.size()
+        && !is_root_separator(it.m_path_ptr->m_pathname, it.m_pos-1))
+      {
+        --it.m_pos;
+        it.m_element = detail::dot_path();
+        return;
+      }
+    }
+
+    // get m_element
+    size_type end_pos(it.m_path_ptr->m_pathname.find_first_of(separators, it.m_pos));
+    if (end_pos == string_type::npos)
+      end_pos = it.m_path_ptr->m_pathname.size();
+    it.m_element = it.m_path_ptr->m_pathname.substr(it.m_pos, end_pos - it.m_pos);
+  }
+
+  BOOST_FILESYSTEM_DECL void path::m_path_iterator_decrement(path::iterator & it)
+  {
+    BOOST_ASSERT_MSG(it.m_pos, "path::iterator decrement past begin()");
+
+    size_type end_pos(it.m_pos);
+
+    // if at end and there was a trailing non-root '/', return "."
+    if (it.m_pos == it.m_path_ptr->m_pathname.size()
+      && it.m_path_ptr->m_pathname.size() > 1
+      && detail::is_directory_separator(it.m_path_ptr->m_pathname[it.m_pos-1])
+      && !is_root_separator(it.m_path_ptr->m_pathname, it.m_pos-1)
+       )
+    {
+      --it.m_pos;
+      it.m_element = detail::dot_path();
+      return;
+    }
+
+    size_type root_dir_pos(root_directory_start(it.m_path_ptr->m_pathname, end_pos));
+
+    // skip separators unless root directory
+    for (
+      ;
+      end_pos > 0
+      && (end_pos-1) != root_dir_pos
+      && detail::is_directory_separator(it.m_path_ptr->m_pathname[end_pos-1])
+      ;
+      --end_pos) {}
+
+    it.m_pos = filename_pos(it.m_path_ptr->m_pathname, end_pos);
+    it.m_element = it.m_path_ptr->m_pathname.substr(it.m_pos, end_pos - it.m_pos);
+    if (it.m_element.m_pathname == preferred_separator_string) // needed for Windows, harmless on POSIX
+      it.m_element.m_pathname = separator_string;    // generic format; see docs
+  }
+
+}  // namespace filesystem
+}  // namespace boost
+
+namespace
+{
+
+  //------------------------------------------------------------------------------------//
+  //                                locale helpers                                      //
+  //------------------------------------------------------------------------------------//
+
+  //  Prior versions of these locale and codecvt implementations tried to take advantage
+  //  of static initialization where possible, kept a local copy of the current codecvt
+  //  facet (to avoid codecvt() having to call use_facet()), and was not multi-threading
+  //  safe (again for efficiency).
+  //
+  //  This was error prone, and required different implementation techniques depending
+  //  on the compiler and also whether static or dynamic linking was used. Furthermore,
+  //  users could not easily provide their multi-threading safe wrappers because the
+  //  path interface requires the implementation itself to call codecvt() to obtain the
+  //  default facet, and the initialization of the static within path_locale() could race.
+  //
+  //  The code below is portable to all platforms, is much simpler, and hopefully will be
+  //  much more robust. Timing tests (on Windows, using a Visual C++ release build)
+  //  indicated the current code is roughly 9% slower than the previous code, and that
+  //  seems a small price to pay for better code that is easier to use.
+
+  std::locale default_locale()
+  {
+# if defined(BOOST_WINDOWS_API)
+    std::locale global_loc = std::locale();
+    return std::locale(global_loc, new windows_file_codecvt);
+# elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__) \
+  || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__HAIKU__)
+    // "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
+    //
+    // "The kernel will reject any filename that is not a valid UTF-8 string, and it will
+    // even be normalized (to Unicode NFD) before stored on disk, at least when using HFS.
+    // The right way to deal with it would be to always convert the filename to UTF-8
+    // before trying to open/create a file." See
+    // http://lists.apple.com/archives/unix-porting/2007/Sep/msg00023.html
+    //
+    // "How a file name looks at the API level depends on the API. Current Carbon APIs
+    // handle file names as an array of UTF-16 characters; POSIX ones handle them as an
+    // array of UTF-8, which is why UTF-8 works well in Terminal. How it's stored on disk
+    // depends on the disk format; HFS+ uses UTF-16, but that's not important in most
+    // cases." See
+    // http://lists.apple.com/archives/applescript-users/2002/Sep/msg00319.html
+    //
+    // Many thanks to Peter Dimov for digging out the above references!
+
+    std::locale global_loc = std::locale();
+    return std::locale(global_loc, new boost::filesystem::detail::utf8_codecvt_facet);
+# else  // Other POSIX
+    // ISO C calls std::locale("") "the locale-specific native environment", and this
+    // locale is the default for many POSIX-based operating systems such as Linux.
+    return std::locale("");
+# endif
+  }
+
+  std::locale& path_locale()
+  // std::locale("") construction, needed on non-Apple POSIX systems, can throw
+  // (if environmental variables LC_MESSAGES or LANG are wrong, for example), so
+  // path_locale() provides lazy initialization via a local static to ensure that any
+  // exceptions occur after main() starts and so can be caught. Furthermore,
+  // path_locale() is only called if path::codecvt() or path::imbue() are themselves
+  // actually called, ensuring that an exception will only be thrown if std::locale("")
+  // is really needed.
+  {
+    // [locale] paragraph 6: Once a facet reference is obtained from a locale object by
+    // calling use_facet<>, that reference remains usable, and the results from member
+    // functions of it may be cached and re-used, as long as some locale object refers
+    // to that facet.
+    static std::locale loc(default_locale());
+#ifdef BOOST_FILESYSTEM_DEBUG
+    std::cout << "***** path_locale() called" << std::endl;
+#endif
+    return loc;
+  }
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//              path::codecvt() and path::imbue() implementation                        //
+//--------------------------------------------------------------------------------------//
+
+namespace boost
+{
+namespace filesystem
+{
+  // See comments above
+
+  BOOST_FILESYSTEM_DECL const path::codecvt_type& path::codecvt()
+  {
+#ifdef BOOST_FILESYSTEM_DEBUG
+    std::cout << "***** path::codecvt() called" << std::endl;
+#endif
+    BOOST_ASSERT_MSG(&path_locale(), "boost::filesystem::path locale initialization error");
+
+    return std::use_facet<std::codecvt<wchar_t, char, std::mbstate_t> >(path_locale());
+  }
+
+  BOOST_FILESYSTEM_DECL std::locale path::imbue(const std::locale& loc)
+  {
+#ifdef BOOST_FILESYSTEM_DEBUG
+    std::cout << "***** path::imbue() called" << std::endl;
+#endif
+    std::locale temp(path_locale());
+    path_locale() = loc;
+    return temp;
+  }
+
+}  // namespace filesystem
+}  // namespace boost
diff --git a/src/boost/libs/filesystem/src/path_traits.cpp b/src/boost/libs/filesystem/src/path_traits.cpp
new file mode 100644
index 00000000..6bb609a8
--- /dev/null
+++ b/src/boost/libs/filesystem/src/path_traits.cpp
@@ -0,0 +1,196 @@
+//  filesystem path_traits.cpp  --------------------------------------------------------//
+
+//  Copyright Beman Dawes 2008, 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/path_traits.hpp>
+#include <boost/system/system_error.hpp>
+#include <boost/scoped_array.hpp>
+#include <locale>   // for codecvt_base::result
+#include <cstring>  // for strlen
+#include <cwchar>   // for wcslen
+
+namespace pt = boost::filesystem::path_traits;
+namespace fs = boost::filesystem;
+namespace bs = boost::system;
+
+//--------------------------------------------------------------------------------------//
+//                                  configuration                                       //
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_FILESYSTEM_CODECVT_BUF_SIZE
+# define BOOST_FILESYSTEM_CODECVT_BUF_SIZE 256
+#endif
+
+namespace {
+
+  const std::size_t default_codecvt_buf_size = BOOST_FILESYSTEM_CODECVT_BUF_SIZE;
+
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//  The public convert() functions do buffer management, and then forward to the        //
+//  convert_aux() functions for the actual call to the codecvt facet.                   //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+//--------------------------------------------------------------------------------------//
+//                      convert_aux const char* to wstring                             //
+//--------------------------------------------------------------------------------------//
+
+  void convert_aux(
+                   const char* from,
+                   const char* from_end,
+                   wchar_t* to, wchar_t* to_end,
+                   std::wstring & target,
+                   const pt::codecvt_type & cvt)
+  {
+    //std::cout << std::hex
+    //          << " from=" << std::size_t(from)
+    //          << " from_end=" << std::size_t(from_end)
+    //          << " to=" << std::size_t(to)
+    //          << " to_end=" << std::size_t(to_end)
+    //          << std::endl;
+
+    std::mbstate_t state  = std::mbstate_t();  // perhaps unneeded, but cuts bug reports
+    const char* from_next;
+    wchar_t* to_next;
+
+    std::codecvt_base::result res;
+
+    if ((res=cvt.in(state, from, from_end, from_next,
+           to, to_end, to_next)) != std::codecvt_base::ok)
+    {
+      //std::cout << " result is " << static_cast<int>(res) << std::endl;
+      BOOST_FILESYSTEM_THROW(bs::system_error(res, fs::codecvt_error_category(),
+        "boost::filesystem::path codecvt to wstring"));
+    }
+    target.append(to, to_next);
+  }
+
+//--------------------------------------------------------------------------------------//
+//                      convert_aux const wchar_t* to string                           //
+//--------------------------------------------------------------------------------------//
+
+  void convert_aux(
+                   const wchar_t* from,
+                   const wchar_t* from_end,
+                   char* to, char* to_end,
+                   std::string & target,
+                   const pt::codecvt_type & cvt)
+  {
+    //std::cout << std::hex
+    //          << " from=" << std::size_t(from)
+    //          << " from_end=" << std::size_t(from_end)
+    //          << " to=" << std::size_t(to)
+    //          << " to_end=" << std::size_t(to_end)
+    //          << std::endl;
+
+    std::mbstate_t state  = std::mbstate_t();  // perhaps unneeded, but cuts bug reports
+    const wchar_t* from_next;
+    char* to_next;
+
+    std::codecvt_base::result res;
+
+    if ((res=cvt.out(state, from, from_end, from_next,
+           to, to_end, to_next)) != std::codecvt_base::ok)
+    {
+      //std::cout << " result is " << static_cast<int>(res) << std::endl;
+      BOOST_FILESYSTEM_THROW(bs::system_error(res, fs::codecvt_error_category(),
+        "boost::filesystem::path codecvt to string"));
+    }
+    target.append(to, to_next);
+  }
+
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//                                   path_traits                                        //
+//--------------------------------------------------------------------------------------//
+
+namespace boost { namespace filesystem { namespace path_traits {
+
+//--------------------------------------------------------------------------------------//
+//                          convert const char* to wstring                              //
+//--------------------------------------------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL
+  void convert(const char* from,
+                const char* from_end,    // 0 for null terminated MBCS
+                std::wstring & to,
+                const codecvt_type & cvt)
+  {
+    BOOST_ASSERT(from);
+
+    if (!from_end)  // null terminated
+    {
+      from_end = from + std::strlen(from);
+    }
+
+    if (from == from_end) return;
+
+    std::size_t buf_size = (from_end - from) * 3;  // perhaps too large, but that's OK
+
+    //  dynamically allocate a buffer only if source is unusually large
+    if (buf_size > default_codecvt_buf_size)
+    {
+      boost::scoped_array< wchar_t > buf(new wchar_t [buf_size]);
+      convert_aux(from, from_end, buf.get(), buf.get()+buf_size, to, cvt);
+    }
+    else
+    {
+      wchar_t buf[default_codecvt_buf_size];
+      convert_aux(from, from_end, buf, buf+default_codecvt_buf_size, to, cvt);
+    }
+  }
+
+//--------------------------------------------------------------------------------------//
+//                         convert const wchar_t* to string                            //
+//--------------------------------------------------------------------------------------//
+
+  BOOST_FILESYSTEM_DECL
+  void convert(const wchar_t* from,
+                const wchar_t* from_end,  // 0 for null terminated MBCS
+                std::string & to,
+                const codecvt_type & cvt)
+  {
+    BOOST_ASSERT(from);
+
+    if (!from_end)  // null terminated
+    {
+      from_end = from + std::wcslen(from);
+    }
+
+    if (from == from_end) return;
+
+    //  The codecvt length functions may not be implemented, and I don't really
+    //  understand them either. Thus this code is just a guess; if it turns
+    //  out the buffer is too small then an error will be reported and the code
+    //  will have to be fixed.
+    std::size_t buf_size = (from_end - from) * 4;  // perhaps too large, but that's OK
+    buf_size += 4;  // encodings like shift-JIS need some prefix space
+
+    //  dynamically allocate a buffer only if source is unusually large
+    if (buf_size > default_codecvt_buf_size)
+    {
+      boost::scoped_array< char > buf(new char [buf_size]);
+      convert_aux(from, from_end, buf.get(), buf.get()+buf_size, to, cvt);
+    }
+    else
+    {
+      char buf[default_codecvt_buf_size];
+      convert_aux(from, from_end, buf, buf+default_codecvt_buf_size, to, cvt);
+    }
+  }
+}}} // namespace boost::filesystem::path_traits
diff --git a/src/boost/libs/filesystem/src/portability.cpp b/src/boost/libs/filesystem/src/portability.cpp
new file mode 100644
index 00000000..fc7186d7
--- /dev/null
+++ b/src/boost/libs/filesystem/src/portability.cpp
@@ -0,0 +1,115 @@
+//  portability.cpp  -------------------------------------------------------------------//
+
+//  Copyright 2002-2005 Beman Dawes
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy
+//  at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/filesystem/path.hpp>
+
+namespace fs = boost::filesystem;
+
+#include <cstring> // SGI MIPSpro compilers need this
+
+# ifdef BOOST_NO_STDC_NAMESPACE
+    namespace std { using ::strerror; }
+# endif
+
+//--------------------------------------------------------------------------------------//
+
+namespace
+{
+  const char invalid_chars[] =
+    "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F"
+    "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F"
+    "<>:\"/\\|";
+  // note that the terminating '\0' is part of the string - thus the size below
+  // is sizeof(invalid_chars) rather than sizeof(invalid_chars)-1.  I
+  const std::string windows_invalid_chars(invalid_chars, sizeof(invalid_chars));
+
+  const std::string valid_posix(
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._-");
+
+} // unnamed namespace
+
+namespace boost
+{
+  namespace filesystem
+  {
+
+    //  name_check functions  ----------------------------------------------//
+
+#   ifdef BOOST_WINDOWS
+    BOOST_FILESYSTEM_DECL bool native(const std::string & name)
+    {
+      return windows_name(name);
+    }
+#   else
+    BOOST_FILESYSTEM_DECL bool native(const std::string & name)
+    {
+      return  name.size() != 0
+        && name[0] != ' '
+        && name.find('/') == std::string::npos;
+    }
+#   endif
+
+    BOOST_FILESYSTEM_DECL bool portable_posix_name(const std::string & name)
+    {
+      return name.size() != 0
+        && name.find_first_not_of(valid_posix) == std::string::npos;
+    }
+
+    BOOST_FILESYSTEM_DECL bool windows_name(const std::string & name)
+    {
+      return name.size() != 0
+        && name[0] != ' '
+        && name.find_first_of(windows_invalid_chars) == std::string::npos
+        && *(name.end()-1) != ' '
+        && (*(name.end()-1) != '.'
+          || name.length() == 1 || name == "..");
+    }
+
+    BOOST_FILESYSTEM_DECL bool portable_name(const std::string & name)
+    {
+      return
+        name.size() != 0
+        && (name == "."
+          || name == ".."
+          || (windows_name(name)
+            && portable_posix_name(name)
+            && name[0] != '.' && name[0] != '-'));
+    }
+
+    BOOST_FILESYSTEM_DECL bool portable_directory_name(const std::string & name)
+    {
+      return
+        name == "."
+        || name == ".."
+        || (portable_name(name)
+          && name.find('.') == std::string::npos);
+    }
+
+    BOOST_FILESYSTEM_DECL bool portable_file_name(const std::string & name)
+    {
+      std::string::size_type pos;
+      return
+         portable_name(name)
+         && name != "."
+         && name != ".."
+         && ((pos = name.find('.')) == std::string::npos
+             || (name.find('.', pos+1) == std::string::npos
+               && (pos + 5) > name.length()))
+        ;
+    }
+
+  } // namespace filesystem
+} // namespace boost
diff --git a/src/boost/libs/filesystem/src/unique_path.cpp b/src/boost/libs/filesystem/src/unique_path.cpp
new file mode 100644
index 00000000..199f7e8b
--- /dev/null
+++ b/src/boost/libs/filesystem/src/unique_path.cpp
@@ -0,0 +1,173 @@
+//  filesystem unique_path.cpp  --------------------------------------------------------//
+
+//  Copyright Beman Dawes 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/operations.hpp>
+#include <cassert>
+
+# ifdef BOOST_POSIX_API
+#   include <fcntl.h>
+#   ifdef BOOST_HAS_UNISTD_H
+#      include <unistd.h>
+#   endif
+# else // BOOST_WINDOWS_API
+#   include <windows.h>
+#   include <wincrypt.h>
+#   ifdef _MSC_VER
+#      pragma comment(lib, "Advapi32.lib")
+#   endif
+# endif
+
+namespace {
+
+void fail(int err, boost::system::error_code* ec)
+{
+  if (ec == 0)
+    BOOST_FILESYSTEM_THROW( boost::system::system_error(err,
+      boost::system::system_category(),
+      "boost::filesystem::unique_path"));
+
+  ec->assign(err, boost::system::system_category());
+  return;
+}
+
+#ifdef BOOST_WINDOWS_API
+
+int acquire_crypt_handle(HCRYPTPROV& handle)
+{
+  if (::CryptAcquireContextW(&handle, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+    return 0;
+
+  int errval = ::GetLastError();
+  if (errval != NTE_BAD_KEYSET)
+    return errval;
+
+  if (::CryptAcquireContextW(&handle, 0, 0, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+    return 0;
+
+  errval = ::GetLastError();
+  // Another thread could have attempted to create the keyset at the same time.
+  if (errval != NTE_EXISTS)
+    return errval;
+
+  if (::CryptAcquireContextW(&handle, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
+    return 0;
+
+  return ::GetLastError();
+}
+
+#endif
+
+void system_crypt_random(void* buf, std::size_t len, boost::system::error_code* ec)
+{
+# ifdef BOOST_POSIX_API
+
+  int file = open("/dev/urandom", O_RDONLY);
+  if (file == -1)
+  {
+    file = open("/dev/random", O_RDONLY);
+    if (file == -1)
+    {
+      fail(errno, ec);
+      return;
+    }
+  }
+
+  size_t bytes_read = 0;
+  while (bytes_read < len)
+  {
+    ssize_t n = read(file, buf, len - bytes_read);
+    if (n == -1)
+    {
+      close(file);
+      fail(errno, ec);
+      return;
+    }
+    bytes_read += n;
+    buf = static_cast<char*>(buf) + n;
+  }
+
+  close(file);
+
+# else // BOOST_WINDOWS_API
+
+  HCRYPTPROV handle;
+  int errval = acquire_crypt_handle(handle);
+
+  if (!errval)
+  {
+    BOOL gen_ok = ::CryptGenRandom(handle, static_cast<DWORD>(len), static_cast<unsigned char*>(buf));
+    if (!gen_ok)
+      errval = ::GetLastError();
+    ::CryptReleaseContext(handle, 0);
+  }
+
+  if (!errval) return;
+
+  fail(errval, ec);
+# endif
+}
+
+}  // unnamed namespace
+
+namespace boost { namespace filesystem { namespace detail {
+
+BOOST_FILESYSTEM_DECL
+path unique_path(const path& model, system::error_code* ec)
+{
+  // This function used wstring for fear of misidentifying
+  // a part of a multibyte character as a percent sign.
+  // However, double byte encodings only have 80-FF as lead
+  // bytes and 40-7F as trailing bytes, whereas % is 25.
+  // So, use string on POSIX and avoid conversions.
+
+  path::string_type s( model.native() );
+
+#ifdef BOOST_WINDOWS_API
+  const wchar_t hex[] = L"0123456789abcdef";
+  const wchar_t percent = L'%';
+#else
+  const char hex[] = "0123456789abcdef";
+  const char percent = '%';
+#endif
+
+  char ran[] = "123456789abcdef";  // init to avoid clang static analyzer message
+                                   // see ticket #8954
+  assert(sizeof(ran) == 16);
+  const int max_nibbles = 2 * sizeof(ran);   // 4-bits per nibble
+
+  int nibbles_used = max_nibbles;
+  for(path::string_type::size_type i=0; i < s.size(); ++i)
+  {
+    if (s[i] == percent)                     // digit request
+    {
+      if (nibbles_used == max_nibbles)
+      {
+        system_crypt_random(ran, sizeof(ran), ec);
+        if (ec != 0 && *ec)
+          return "";
+        nibbles_used = 0;
+      }
+      int c = ran[nibbles_used/2];
+      c >>= 4 * (nibbles_used++ & 1);  // if odd, shift right 1 nibble
+      s[i] = hex[c & 0xf];             // convert to hex digit and replace
+    }
+  }
+
+  if (ec != 0) ec->clear();
+
+  return s;
+}
+
+}}}
diff --git a/src/boost/libs/filesystem/src/utf8_codecvt_facet.cpp b/src/boost/libs/filesystem/src/utf8_codecvt_facet.cpp
new file mode 100644
index 00000000..e46778c0
--- /dev/null
+++ b/src/boost/libs/filesystem/src/utf8_codecvt_facet.cpp
@@ -0,0 +1,26 @@
+// Copyright Vladimir Prus 2004.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// For HP-UX, request that WCHAR_MAX and WCHAR_MIN be defined as macros,
+// not casts. See ticket 5048
+#define _INCLUDE_STDCSOURCE_199901
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+
+#define BOOST_UTF8_BEGIN_NAMESPACE \
+     namespace boost { namespace filesystem { namespace detail {
+
+#define BOOST_UTF8_END_NAMESPACE }}}
+#define BOOST_UTF8_DECL BOOST_FILESYSTEM_DECL
+
+#include <boost/detail/utf8_codecvt_facet.ipp>
+
+#undef BOOST_UTF8_BEGIN_NAMESPACE
+#undef BOOST_UTF8_END_NAMESPACE
+#undef BOOST_UTF8_DECL
diff --git a/src/boost/libs/filesystem/src/windows_file_codecvt.cpp b/src/boost/libs/filesystem/src/windows_file_codecvt.cpp
new file mode 100644
index 00000000..0262d2cf
--- /dev/null
+++ b/src/boost/libs/filesystem/src/windows_file_codecvt.cpp
@@ -0,0 +1,77 @@
+//  filesystem windows_file_codecvt.cpp  -----------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+// Include Boost.Predef first so that windows.h is guaranteed to be not included
+#include <boost/predef/os/windows.h>
+#if BOOST_OS_WINDOWS
+#include <boost/winapi/config.hpp>
+#endif
+
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <cwchar>  // for mbstate_t
+
+#ifdef BOOST_WINDOWS_API
+
+#include "windows_file_codecvt.hpp"
+
+// Versions of MinGW prior to GCC 4.6 requires this
+#ifndef WINVER
+# define WINVER 0x0500
+#endif
+
+#include <windows.h>
+
+  std::codecvt_base::result windows_file_codecvt::do_in(
+    std::mbstate_t &,
+    const char* from, const char* from_end, const char*& from_next,
+    wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const
+  {
+    UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+
+    int count;
+    if ((count = ::MultiByteToWideChar(codepage, MB_PRECOMPOSED, from,
+      static_cast<int>(from_end - from), to, static_cast<int>(to_end - to))) == 0)
+    {
+      return error;  // conversion failed
+    }
+
+    from_next = from_end;
+    to_next = to + count;
+    *to_next = L'\0';
+    return ok;
+ }
+
+  std::codecvt_base::result windows_file_codecvt::do_out(
+    std::mbstate_t &,
+    const wchar_t* from, const wchar_t* from_end, const wchar_t*  & from_next,
+    char* to, char* to_end, char* & to_next) const
+  {
+    UINT codepage = AreFileApisANSI() ? CP_ACP : CP_OEMCP;
+
+    int count;
+    if ((count = ::WideCharToMultiByte(codepage, WC_NO_BEST_FIT_CHARS, from,
+      static_cast<int>(from_end - from), to, static_cast<int>(to_end - to), 0, 0)) == 0)
+    {
+      return error;  // conversion failed
+    }
+
+    from_next = from_end;
+    to_next = to + count;
+    *to_next = '\0';
+    return ok;
+  }
+
+  # endif  // BOOST_WINDOWS_API
+
diff --git a/src/boost/libs/filesystem/src/windows_file_codecvt.hpp b/src/boost/libs/filesystem/src/windows_file_codecvt.hpp
new file mode 100644
index 00000000..97cbf161
--- /dev/null
+++ b/src/boost/libs/filesystem/src/windows_file_codecvt.hpp
@@ -0,0 +1,56 @@
+//  filesystem windows_file_codecvt.hpp  -----------------------------------------------//
+
+//  Copyright Beman Dawes 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#ifndef BOOST_FILESYSTEM3_WIN_FILE_CODECVT_HPP
+#define BOOST_FILESYSTEM3_WIN_FILE_CODECVT_HPP
+
+#include <boost/filesystem/config.hpp>
+#include <locale>
+
+  //------------------------------------------------------------------------------------//
+  //                                                                                    //
+  //                          class windows_file_codecvt                                //
+  //                                                                                    //
+  //  Warning: partial implementation; even do_in and do_out only partially meet the    //
+  //  standard library specifications as the "to" buffer must hold the entire result.   //
+  //                                                                                    //
+  //------------------------------------------------------------------------------------//
+
+  class BOOST_FILESYSTEM_DECL windows_file_codecvt
+    : public std::codecvt< wchar_t, char, std::mbstate_t >
+  {
+  public:
+    explicit windows_file_codecvt(std::size_t refs = 0)
+        : std::codecvt<wchar_t, char, std::mbstate_t>(refs) {}
+  protected:
+
+    virtual bool do_always_noconv() const throw() { return false; }
+
+    //  seems safest to assume variable number of characters since we don't
+    //  actually know what codepage is active
+    virtual int do_encoding() const throw() { return 0; }
+
+    virtual std::codecvt_base::result do_in(std::mbstate_t& state,
+      const char* from, const char* from_end, const char*& from_next,
+      wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const;
+
+    virtual std::codecvt_base::result do_out(std::mbstate_t & state,
+      const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+      char* to, char* to_end, char*& to_next) const;
+
+    virtual std::codecvt_base::result do_unshift(std::mbstate_t&,
+        char* /*from*/, char* /*to*/, char* & /*next*/) const  { return ok; }
+
+    virtual int do_length(std::mbstate_t&,
+      const char* /*from*/, const char* /*from_end*/, std::size_t /*max*/) const  { return 0; }
+
+    virtual int do_max_length() const throw () { return 0; }
+  };
+
+#endif  // BOOST_FILESYSTEM3_WIN_FILE_CODECVT_HPP
diff --git a/src/boost/libs/filesystem/src/windows_tools.hpp b/src/boost/libs/filesystem/src/windows_tools.hpp
new file mode 100644
index 00000000..ce116c51
--- /dev/null
+++ b/src/boost/libs/filesystem/src/windows_tools.hpp
@@ -0,0 +1,54 @@
+//  windows_tools.hpp  -----------------------------------------------------------------//
+
+//  Copyright 2002-2009, 2014 Beman Dawes
+//  Copyright 2001 Dietmar Kuehl
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#ifndef BOOST_FILESYSTEM_SRC_WINDOWS_TOOLS_HPP_
+#define BOOST_FILESYSTEM_SRC_WINDOWS_TOOLS_HPP_
+
+#include <boost/filesystem/path.hpp>
+#include <boost/filesystem/file_status.hpp>
+
+#include <windows.h>
+
+namespace boost {
+namespace filesystem {
+namespace detail {
+
+inline bool equal_extension(wchar_t const* p, wchar_t const (&x1)[5], wchar_t const (&x2)[5])
+{
+  return
+    (p[0] == x1[0] || p[0] == x2[0]) &&
+    (p[1] == x1[1] || p[1] == x2[1]) &&
+    (p[2] == x1[2] || p[2] == x2[2]) &&
+    (p[3] == x1[3] || p[3] == x2[3]) &&
+    p[4] == 0;
+}
+
+inline boost::filesystem::perms make_permissions(const boost::filesystem::path& p, DWORD attr)
+{
+  boost::filesystem::perms prms = boost::filesystem::owner_read | boost::filesystem::group_read | boost::filesystem::others_read;
+  if  ((attr & FILE_ATTRIBUTE_READONLY) == 0u)
+    prms |= boost::filesystem::owner_write | boost::filesystem::group_write | boost::filesystem::others_write;
+  boost::filesystem::path ext = p.extension();
+  wchar_t const* q = ext.c_str();
+  if (equal_extension(q, L".exe", L".EXE")
+    || equal_extension(q, L".com", L".COM")
+    || equal_extension(q, L".bat", L".BAT")
+    || equal_extension(q, L".cmd", L".CMD"))
+    prms |= boost::filesystem::owner_exe | boost::filesystem::group_exe | boost::filesystem::others_exe;
+  return prms;
+}
+
+} // namespace detail
+} // namespace filesystem
+} // namespace boost
+
+#endif // BOOST_FILESYSTEM_SRC_WINDOWS_TOOLS_HPP_
diff --git a/src/boost/libs/filesystem/test/Jamfile.v2 b/src/boost/libs/filesystem/test/Jamfile.v2
new file mode 100644
index 00000000..5f9ae31d
--- /dev/null
+++ b/src/boost/libs/filesystem/test/Jamfile.v2
@@ -0,0 +1,54 @@
+# Boost Filesystem Library test Jamfile
+
+# (C) Copyright Beman Dawes 2002-2006
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+
+import testing ;
+import os ;
+
+project
+    : requirements
+      <library>/boost/filesystem//boost_filesystem
+    ;
+
+# Some tests are run both statically and as shared libraries since Filesystem
+# has a history of bugs that appear only in one type of build or the other.
+
+path-constant HERE : . ;
+
+local VIS ;
+
+if [ os.environ UBSAN ]
+{
+    VIS = <visibility>global
+       -<library>/boost/filesystem//boost_filesystem
+        <library>/boost/filesystem//boost_filesystem/<visibility>global ;
+}
+
+run config_info.cpp : : : <link>shared <test-info>always_show_run_output ;
+run config_info.cpp : : : <link>static <test-info>always_show_run_output : config_info_static ;
+run convenience_test.cpp ;
+compile macro_default_test.cpp ;
+run odr1_test.cpp odr2_test.cpp ;
+run deprecated_test.cpp ;
+run fstream_test.cpp : : :  $(VIS) ;
+run large_file_support_test.cpp ;
+run locale_info.cpp : : : <test-info>always_show_run_output ;
+run operations_test.cpp : : : <link>shared <test-info>always_show_run_output ;
+run operations_test.cpp : : : <link>static : operations_test_static ;
+run operations_unit_test.cpp : $(HERE) : : <link>shared <test-info>always_show_run_output ;
+run path_test.cpp : : : <link>shared ;
+run path_test.cpp : : : <link>static : path_test_static ;
+run path_unit_test.cpp : : : <link>shared $(VIS) ;
+run path_unit_test.cpp : : : <link>static $(VIS) : path_unit_test_static ;
+run relative_test.cpp ;
+run ../example/simple_ls.cpp ;
+run ../example/file_status.cpp ;
+run foreach_test.cpp ;
+
+# `quick` target (for CI)
+run quick.cpp ;
+
+# Tests for specific issues
+run issues/70-71-copy.cpp ;
diff --git a/src/boost/libs/filesystem/test/boost_test.bat b/src/boost/libs/filesystem/test/boost_test.bat
new file mode 100644
index 00000000..38880be0
--- /dev/null
+++ b/src/boost/libs/filesystem/test/boost_test.bat
@@ -0,0 +1,30 @@
+@echo off
+
+if not $%1==$--help goto nohelp
+echo Invoke: boost_test [-ts toolset] [b2-options]
+echo Default -ts is gcc-c++03,gcc-c++11,gcc-c++14,msvc-12.0,msvc-14.0,msvc-14.1
+echo Example: boost_test -ts msvc-12.0 -a "define=BOOST_SOME_MACRO" config_info
+goto done
+:nohelp
+
+if $%1==$-ts goto toolset
+
+echo Begin test processing...
+b2 -j3 --v2 --dump-tests --toolset=gcc-c++03,gcc-c++11,gcc-c++14,msvc-12.0,msvc-14.0,msvc-14.1 %* >b2.log 2>&1
+goto jam_log
+
+:toolset
+echo Begin test processing...
+b2 -j3 --v2 --dump-tests --toolset=%2 %3 %4 %5 %6 %7 %8 %9  >b2.log 2>&1
+
+:jam_log
+echo Begin log processing...
+process_jam_log --v2 <b2.log
+start b2.log
+grep -i warning b2.log | sort | uniq
+
+echo Begin compiler status processing...
+compiler_status --v2 . test_status.html test_links.html
+start test_status.html
+
+:done
diff --git a/src/boost/libs/filesystem/test/config_info.cpp b/src/boost/libs/filesystem/test/config_info.cpp
new file mode 100644
index 00000000..4216627c
--- /dev/null
+++ b/src/boost/libs/filesystem/test/config_info.cpp
@@ -0,0 +1,52 @@
+//  boost/libs/filesystem/test/config_info.cpp  ----------------------------------------//
+
+//  Copyright Beman Dawes 2017
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/detail/macro_value.hpp>
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+
+int main()
+{
+  cout << "Verify macro reporting works correctly\n";
+  cout << "  NOSUCHMACRO: " << BOOST_MACRO_VALUE(NOSUCHMACRO) << endl;
+# define SUCHAMACRO
+  cout << "  SUCHAMACRO: " << BOOST_MACRO_VALUE(SUCHAMACRO) << endl;
+  cout << "  BOOST_VERSION: " << BOOST_MACRO_VALUE(BOOST_VERSION) << endl;
+
+  cout << "Report macro values that may be useful in debugging various test programs\n";
+  cout << "  BOOST_VERSION: " << BOOST_MACRO_VALUE(BOOST_VERSION) << endl;
+  cout << "  BOOST_FILESYSTEM_VERSION: " << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_VERSION) << endl;
+  cout << "  BOOST_FILESYSTEM_DEPRECATED: " << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_DEPRECATED) << endl;
+  cout << "  BOOST_FILESYSTEM_SOURCE: " << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_SOURCE) << endl;
+  cout << "  BOOST_FILESYSTEM_DYN_LINK: " << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_DYN_LINK) << endl;
+  cout << "  BOOST_FILESYSTEM_STATIC_LINK: " << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_STATIC_LINK) << endl;
+  cout << "  BOOST_ALL_NO_LIB: " << BOOST_MACRO_VALUE(BOOST_ALL_NO_LIB) << endl;
+  cout << "  BOOST_FILESYSTEM_NO_LIB: " << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_NO_LIB) << endl;
+  cout << "  BOOST_LIB_NAME: " << BOOST_MACRO_VALUE(BOOST_LIB_NAME) << endl;
+  cout << "  BOOST_POSIX_API: " << BOOST_MACRO_VALUE(BOOST_POSIX_API) << endl;
+  cout << "  BOOST_WINDOWS_API: " << BOOST_MACRO_VALUE(BOOST_WINDOWS_API) << endl;
+  cout << "  _MSC_VER: " << BOOST_MACRO_VALUE(_MSC_VER) << endl;
+  cout << "  __MINGW32__: " << BOOST_MACRO_VALUE(__MINGW32__) << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+  //cout << "  : " << BOOST_MACRO_VALUE() << endl;
+
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/convenience_test.cpp b/src/boost/libs/filesystem/test/convenience_test.cpp
new file mode 100644
index 00000000..f4364b94
--- /dev/null
+++ b/src/boost/libs/filesystem/test/convenience_test.cpp
@@ -0,0 +1,179 @@
+//  libs/filesystem/test/convenience_test.cpp  -----------------------------------------//
+
+//  Copyright Beman Dawes, 2002
+//  Copyright Vladimir Prus, 2002
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/convenience.hpp>
+#include <boost/filesystem/directory.hpp>
+#include <boost/filesystem/exception.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+#include <boost/bind.hpp>
+#include <fstream>
+#include <iostream>
+
+namespace fs = boost::filesystem;
+using fs::path;
+namespace sys = boost::system;
+
+namespace
+{
+  template< typename F >
+    bool throws_fs_error(F func)
+  {
+    try { func(); }
+
+    catch (const fs::filesystem_error &)
+    {
+      return true;
+    }
+    return false;
+  }
+
+    void create_recursive_iterator(const fs::path & ph)
+    {
+      fs::recursive_directory_iterator it(ph);
+    }
+}
+
+//  ------------------------------------------------------------------------------------//
+
+int cpp_main(int, char*[])
+{
+
+//  create_directories() tests  --------------------------------------------------------//
+
+  BOOST_TEST(!fs::create_directories("/")); // should be harmless
+
+  path unique_dir = fs::unique_path();  // unique name in case tests running in parallel
+  path unique_yy = unique_dir / "yy";
+  path unique_yya = unique_dir / "yya";
+  path unique_yy_zz = unique_dir / "yy" / "zz";
+
+  fs::remove_all(unique_dir);  // make sure slate is blank
+  BOOST_TEST(!fs::exists(unique_dir)); // reality check
+
+  BOOST_TEST(fs::create_directories(unique_dir));
+  BOOST_TEST(fs::exists(unique_dir));
+  BOOST_TEST(fs::is_directory(unique_dir));
+
+  BOOST_TEST(fs::create_directories(unique_yy_zz));
+  BOOST_TEST(fs::exists(unique_dir));
+  BOOST_TEST(fs::exists(unique_yy));
+  BOOST_TEST(fs::exists(unique_yy_zz));
+  BOOST_TEST(fs::is_directory(unique_dir));
+  BOOST_TEST(fs::is_directory(unique_yy));
+  BOOST_TEST(fs::is_directory(unique_yy_zz));
+
+  path is_a_file(unique_dir / "uu");
+  {
+    std::ofstream f(is_a_file.string().c_str());
+    BOOST_TEST(!!f);
+  }
+  BOOST_TEST(throws_fs_error(
+    boost::bind(fs::create_directories, is_a_file)));
+  BOOST_TEST(throws_fs_error(
+    boost::bind(fs::create_directories, is_a_file / "aa")));
+
+// recursive_directory_iterator tests ----------------------------------------//
+
+  sys::error_code ec;
+  fs::recursive_directory_iterator it("/no-such-path", ec);
+  BOOST_TEST(ec);
+
+  BOOST_TEST(throws_fs_error(
+    boost::bind(create_recursive_iterator, "/no-such-path")));
+
+  fs::remove(unique_dir / "uu");
+
+#ifdef BOOST_WINDOWS_API
+  // These tests depends on ordering of directory entries, and that's guaranteed
+  // on Windows but not necessarily on other operating systems
+  {
+    std::ofstream f(unique_yya.string().c_str());
+    BOOST_TEST(!!f);
+  }
+
+  for (it = fs::recursive_directory_iterator(unique_dir);
+        it != fs::recursive_directory_iterator(); ++it)
+    { std::cout << it->path() << '\n'; }
+
+  it = fs::recursive_directory_iterator(unique_dir);
+  BOOST_TEST(it->path() == unique_yy);
+  BOOST_TEST(it.depth() == 0);
+  ++it;
+  BOOST_TEST(it->path() == unique_yy_zz);
+  BOOST_TEST(it.depth() == 1);
+  it.pop();
+  BOOST_TEST(it->path() == unique_yya);
+  BOOST_TEST(it.depth() == 0);
+  it++;
+  BOOST_TEST(it == fs::recursive_directory_iterator());
+
+  it = fs::recursive_directory_iterator(unique_dir);
+  BOOST_TEST(it->path() == unique_yy);
+  it.disable_recursion_pending();
+  ++it;
+  BOOST_TEST(it->path() == unique_yya);
+  ++it;
+  BOOST_TEST(it == fs::recursive_directory_iterator());
+
+  fs::remove(unique_yya);
+#endif
+
+  it = fs::recursive_directory_iterator(unique_yy_zz);
+  BOOST_TEST(it == fs::recursive_directory_iterator());
+
+  it = fs::recursive_directory_iterator(unique_dir);
+  BOOST_TEST(it->path() == unique_yy);
+  BOOST_TEST(it.depth() == 0);
+  ++it;
+  BOOST_TEST(it->path() == unique_yy_zz);
+  BOOST_TEST(it.depth() == 1);
+  it++;
+  BOOST_TEST(it == fs::recursive_directory_iterator());
+
+  it = fs::recursive_directory_iterator(unique_dir);
+  BOOST_TEST(it->path() == unique_yy);
+  it.disable_recursion_pending();
+  ++it;
+  BOOST_TEST(it == fs::recursive_directory_iterator());
+
+  it = fs::recursive_directory_iterator(unique_dir);
+  BOOST_TEST(it->path() == unique_yy);
+  ++it;
+  it.pop();
+  BOOST_TEST(it == fs::recursive_directory_iterator());
+
+  ec.clear();
+  BOOST_TEST(!ec);
+  // check that two argument failed constructor creates the end iterator
+  BOOST_TEST(fs::recursive_directory_iterator("nosuchdir", ec)
+    == fs::recursive_directory_iterator());
+  BOOST_TEST(ec);
+
+  fs::remove_all(unique_dir);  // clean up behind ourselves
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/deprecated_test.cpp b/src/boost/libs/filesystem/test/deprecated_test.cpp
new file mode 100644
index 00000000..a65f9585
--- /dev/null
+++ b/src/boost/libs/filesystem/test/deprecated_test.cpp
@@ -0,0 +1,251 @@
+//  deprecated_test program --------------------------------------------------//
+
+//  Copyright Beman Dawes 2002
+//  Copyright Vladimir Prus 2002
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//  This test verifies that various deprecated names still work. This is
+//  important to preserve existing code that uses the old names.
+
+#define BOOST_FILESYSTEM_DEPRECATED
+
+#include <boost/filesystem.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+namespace fs = boost::filesystem;
+using boost::filesystem::path;
+
+#define PATH_CHECK(a, b) check(a, b, __LINE__)
+
+namespace
+{
+  std::string platform(BOOST_PLATFORM);
+
+  void check(const fs::path & source,
+              const std::string & expected, int line)
+  {
+    if (source.generic_string()== expected) return;
+
+    ++::boost::detail::test_errors();
+
+    std::cout << '(' << line << ") source.string(): \"" << source.string()
+              << "\" != expected: \"" << expected
+              << "\"" << std::endl;
+  }
+
+  void normalize_test()
+  {
+    PATH_CHECK(path("").normalize(), "");
+    PATH_CHECK(path("/").normalize(), "/");
+    PATH_CHECK(path("//").normalize(), "//");
+    PATH_CHECK(path("///").normalize(), "/");
+    PATH_CHECK(path("f").normalize(), "f");
+    PATH_CHECK(path("foo").normalize(), "foo");
+    PATH_CHECK(path("foo/").normalize(), "foo/.");
+    PATH_CHECK(path("f/").normalize(), "f/.");
+    PATH_CHECK(path("/foo").normalize(), "/foo");
+    PATH_CHECK(path("foo/bar").normalize(), "foo/bar");
+    PATH_CHECK(path("..").normalize(), "..");
+    PATH_CHECK(path("../..").normalize(), "../..");
+    PATH_CHECK(path("/..").normalize(), "/..");
+    PATH_CHECK(path("/../..").normalize(), "/../..");
+    PATH_CHECK(path("../foo").normalize(), "../foo");
+    PATH_CHECK(path("foo/..").normalize(), ".");
+    PATH_CHECK(path("foo/../").normalize(), "./.");
+    PATH_CHECK((path("foo") / "..").normalize() , ".");
+    PATH_CHECK(path("foo/...").normalize(), "foo/...");
+    PATH_CHECK(path("foo/.../").normalize(), "foo/.../.");
+    PATH_CHECK(path("foo/..bar").normalize(), "foo/..bar");
+    PATH_CHECK(path("../f").normalize(), "../f");
+    PATH_CHECK(path("/../f").normalize(), "/../f");
+    PATH_CHECK(path("f/..").normalize(), ".");
+    PATH_CHECK((path("f") / "..").normalize() , ".");
+    PATH_CHECK(path("foo/../..").normalize(), "..");
+    PATH_CHECK(path("foo/../../").normalize(), "../.");
+    PATH_CHECK(path("foo/../../..").normalize(), "../..");
+    PATH_CHECK(path("foo/../../../").normalize(), "../../.");
+    PATH_CHECK(path("foo/../bar").normalize(), "bar");
+    PATH_CHECK(path("foo/../bar/").normalize(), "bar/.");
+    PATH_CHECK(path("foo/bar/..").normalize(), "foo");
+    PATH_CHECK(path("foo/bar/../").normalize(), "foo/.");
+    PATH_CHECK(path("foo/bar/../..").normalize(), ".");
+    PATH_CHECK(path("foo/bar/../../").normalize(), "./.");
+    PATH_CHECK(path("foo/bar/../blah").normalize(), "foo/blah");
+    PATH_CHECK(path("f/../b").normalize(), "b");
+    PATH_CHECK(path("f/b/..").normalize(), "f");
+    PATH_CHECK(path("f/b/../").normalize(), "f/.");
+    PATH_CHECK(path("f/b/../a").normalize(), "f/a");
+    PATH_CHECK(path("foo/bar/blah/../..").normalize(), "foo");
+    PATH_CHECK(path("foo/bar/blah/../../bletch").normalize(), "foo/bletch");
+    PATH_CHECK(path("//net").normalize(), "//net");
+    PATH_CHECK(path("//net/").normalize(), "//net/");
+    PATH_CHECK(path("//..net").normalize(), "//..net");
+    PATH_CHECK(path("//net/..").normalize(), "//net/..");
+    PATH_CHECK(path("//net/foo").normalize(), "//net/foo");
+    PATH_CHECK(path("//net/foo/").normalize(), "//net/foo/.");
+    PATH_CHECK(path("//net/foo/..").normalize(), "//net/");
+    PATH_CHECK(path("//net/foo/../").normalize(), "//net/.");
+
+    PATH_CHECK(path("/net/foo/bar").normalize(), "/net/foo/bar");
+    PATH_CHECK(path("/net/foo/bar/").normalize(), "/net/foo/bar/.");
+    PATH_CHECK(path("/net/foo/..").normalize(), "/net");
+    PATH_CHECK(path("/net/foo/../").normalize(), "/net/.");
+
+    PATH_CHECK(path("//net//foo//bar").normalize(), "//net/foo/bar");
+    PATH_CHECK(path("//net//foo//bar//").normalize(), "//net/foo/bar/.");
+    PATH_CHECK(path("//net//foo//..").normalize(), "//net/");
+    PATH_CHECK(path("//net//foo//..//").normalize(), "//net/.");
+
+    PATH_CHECK(path("///net///foo///bar").normalize(), "/net/foo/bar");
+    PATH_CHECK(path("///net///foo///bar///").normalize(), "/net/foo/bar/.");
+    PATH_CHECK(path("///net///foo///..").normalize(), "/net");
+    PATH_CHECK(path("///net///foo///..///").normalize(), "/net/.");
+
+    if (platform == "Windows")
+    {
+      PATH_CHECK(path("c:..").normalize(), "c:..");
+      PATH_CHECK(path("c:foo/..").normalize(), "c:");
+
+      PATH_CHECK(path("c:foo/../").normalize(), "c:.");
+
+      PATH_CHECK(path("c:/foo/..").normalize(), "c:/");
+      PATH_CHECK(path("c:/foo/../").normalize(), "c:/.");
+      PATH_CHECK(path("c:/..").normalize(), "c:/..");
+      PATH_CHECK(path("c:/../").normalize(), "c:/../.");
+      PATH_CHECK(path("c:/../..").normalize(), "c:/../..");
+      PATH_CHECK(path("c:/../../").normalize(), "c:/../../.");
+      PATH_CHECK(path("c:/../foo").normalize(), "c:/../foo");
+      PATH_CHECK(path("c:/../foo/").normalize(), "c:/../foo/.");
+      PATH_CHECK(path("c:/../../foo").normalize(), "c:/../../foo");
+      PATH_CHECK(path("c:/../../foo/").normalize(), "c:/../../foo/.");
+      PATH_CHECK(path("c:/..foo").normalize(), "c:/..foo");
+    }
+    else // POSIX
+    {
+      PATH_CHECK(path("c:..").normalize(), "c:..");
+      PATH_CHECK(path("c:foo/..").normalize(), ".");
+      PATH_CHECK(path("c:foo/../").normalize(), "./.");
+      PATH_CHECK(path("c:/foo/..").normalize(), "c:");
+      PATH_CHECK(path("c:/foo/../").normalize(), "c:/.");
+      PATH_CHECK(path("c:/..").normalize(), ".");
+      PATH_CHECK(path("c:/../").normalize(), "./.");
+      PATH_CHECK(path("c:/../..").normalize(), "..");
+      PATH_CHECK(path("c:/../../").normalize(), "../.");
+      PATH_CHECK(path("c:/../foo").normalize(), "foo");
+      PATH_CHECK(path("c:/../foo/").normalize(), "foo/.");
+      PATH_CHECK(path("c:/../../foo").normalize(), "../foo");
+      PATH_CHECK(path("c:/../../foo/").normalize(), "../foo/.");
+      PATH_CHECK(path("c:/..foo").normalize(), "c:/..foo");
+    }
+  }
+
+  //  misc_test ------------------------------------------------------------------------//
+
+  void misc_test()
+  {
+    fs::path p;
+
+    fs::initial_path<fs::path>();
+    fs::initial_path<fs::wpath>();
+
+    p.file_string();
+    p.directory_string();
+  }
+
+  //  path_rename_test -----------------------------------------------------------------//
+
+  void path_rename_test()
+  {
+    fs::path p("foo/bar/blah");
+
+    BOOST_TEST_EQ(path("foo/bar/blah").remove_leaf(), "foo/bar");
+    BOOST_TEST_EQ(p.leaf(), "blah");
+    BOOST_TEST_EQ(p.branch_path(), "foo/bar");
+    BOOST_TEST(p.has_leaf());
+    BOOST_TEST(p.has_branch_path());
+    BOOST_TEST(!p.is_complete());
+
+    if (platform == "Windows")
+    {
+      BOOST_TEST_EQ(path("foo\\bar\\blah").remove_leaf(), "foo\\bar");
+      p = "foo\\bar\\blah";
+      BOOST_TEST_EQ(p.branch_path(), "foo\\bar");
+    }
+  }
+
+} // unnamed namespace
+
+
+//--------------------------------------------------------------------------------------//
+
+int cpp_main(int /*argc*/, char* /*argv*/[])
+{
+  // The choice of platform is make at runtime rather than compile-time
+  // so that compile errors for all platforms will be detected even though
+  // only the current platform is runtime tested.
+  platform = (platform == "Win32" || platform == "Win64" || platform == "Cygwin")
+               ? "Windows"
+               : "POSIX";
+  std::cout << "Platform is " << platform << '\n';
+
+  BOOST_TEST(fs::initial_path() == fs::current_path());
+
+  //path::default_name_check(fs::no_check);
+
+  fs::directory_entry de("foo/bar");
+
+  de.replace_leaf("", fs::file_status(), fs::file_status());
+
+  //de.leaf();
+  //de.string();
+
+  fs::path ng(" no-way, Jose");
+  BOOST_TEST(!fs::is_regular(ng));  // verify deprecated name still works
+  BOOST_TEST(!fs::symbolic_link_exists("nosuchfileordirectory"));
+
+  misc_test();
+  path_rename_test();
+  normalize_test();
+  BOOST_TEST(fs::path("foo/bar").generic() == fs::path("foo/bar"));
+
+// extension() tests ---------------------------------------------------------//
+
+  BOOST_TEST(fs::extension("a/b") == "");
+  BOOST_TEST(fs::extension("a/b.txt") == ".txt");
+  BOOST_TEST(fs::extension("a/b.") == ".");
+  BOOST_TEST(fs::extension("a.b.c") == ".c");
+  BOOST_TEST(fs::extension("a.b.c.") == ".");
+  BOOST_TEST(fs::extension("") == "");
+  BOOST_TEST(fs::extension("a/") == "");
+
+// basename() tests ----------------------------------------------------------//
+
+  BOOST_TEST(fs::basename("b") == "b");
+  BOOST_TEST(fs::basename("a/b.txt") == "b");
+  BOOST_TEST(fs::basename("a/b.") == "b");
+  BOOST_TEST(fs::basename("a.b.c") == "a.b");
+  BOOST_TEST(fs::basename("a.b.c.") == "a.b.c");
+  BOOST_TEST(fs::basename("") == "");
+
+// change_extension tests ---------------------------------------------------//
+
+  BOOST_TEST(fs::change_extension("a.txt", ".tex").string() == "a.tex");
+  BOOST_TEST(fs::change_extension("a.", ".tex").string() == "a.tex");
+  BOOST_TEST(fs::change_extension("a", ".txt").string() == "a.txt");
+  BOOST_TEST(fs::change_extension("a.b.txt", ".tex").string() == "a.b.tex");
+  // see the rationale in html docs for explanation why this works
+  BOOST_TEST(fs::change_extension("", ".png").string() == ".png");
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/design_use_cases.cpp b/src/boost/libs/filesystem/test/design_use_cases.cpp
new file mode 100644
index 00000000..49b0c28c
--- /dev/null
+++ b/src/boost/libs/filesystem/test/design_use_cases.cpp
@@ -0,0 +1,81 @@
+#include <string>
+#include <iostream>
+
+//  Minimal class path
+
+class path
+{
+public:
+  path( const char * )
+  {
+    std::cout << "path( const char * )\n";
+  }
+  path( const std::string & )
+  {
+    std::cout << "path( std::string & )\n";
+  }
+
+//  for maximum efficiency, either signature must work
+# ifdef BY_VALUE
+  operator const std::string() const
+# else
+  operator const std::string&() const
+# endif
+  {
+    std::cout << "operator string\n";
+    return m_path;
+  }
+
+#ifdef NAMED_CONVERSION
+  std::string string() const
+  {
+    std::cout << "std::string string() const\n";
+    return m_path;
+  }
+#endif
+
+private:
+  std::string m_path;
+};
+
+bool operator==( const path &, const path & )
+{
+  std::cout << "operator==( const path &, const path & )\n";
+  return true;
+}
+
+//  These are the critical use cases. If any of these don't compile, usability
+//  is unacceptably degraded.
+
+void f( const path & )
+{
+  std::cout << "f( const path & )\n";
+}
+
+int main()
+{
+  f( "foo" );
+  f( std::string( "foo" ) );
+  f( path( "foo" ) );
+
+  std::cout << '\n';
+
+  std::string s1( path( "foo" ) );
+  std::string s2 = path( "foo" );
+  s2 = path( "foo" );
+
+#ifdef NAMED_CONVERSION
+  s2 = path( "foo" ).string();
+#endif
+
+  std::cout << '\n';
+
+  // these must call bool path( const path &, const path & );
+  path( "foo" ) == path( "foo" );
+  path( "foo" ) == "foo";
+  path( "foo" ) == std::string( "foo" );
+  "foo" == path( "foo" );
+  std::string( "foo" ) == path( "foo" );
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/equivalent.cpp b/src/boost/libs/filesystem/test/equivalent.cpp
new file mode 100644
index 00000000..ead4210c
--- /dev/null
+++ b/src/boost/libs/filesystem/test/equivalent.cpp
@@ -0,0 +1,39 @@
+//  equivalent program -------------------------------------------------------//
+
+//  Copyright (c) 2004 Beman Dawes
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy
+//  at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//----------------------------------------------------------------------------//
+
+#include <boost/filesystem/operations.hpp>
+#include <iostream>
+#include <exception>
+
+int main( int argc, char * argv[] )
+{
+  boost::filesystem::path::default_name_check( boost::filesystem::native );
+  if ( argc != 3 )
+  {
+    std::cout << "Usage: equivalent path1 path2\n";
+    return 2;
+  }
+
+  bool eq;
+  try
+  {
+    eq = boost::filesystem::equivalent( argv[1], argv[2] );
+  }
+  catch ( const std::exception & ex )
+  {
+    std::cout << ex.what() << "\n";
+    return 3;
+  }
+
+  std::cout << (eq ? "Paths are equivalent\n" : "Paths are not equivalent\n");
+  return !eq;
+}
diff --git a/src/boost/libs/filesystem/test/foreach_test.cpp b/src/boost/libs/filesystem/test/foreach_test.cpp
new file mode 100644
index 00000000..c6280f76
--- /dev/null
+++ b/src/boost/libs/filesystem/test/foreach_test.cpp
@@ -0,0 +1,62 @@
+
+// Copyright 2018 Peter Dimov.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+// See library home page at http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem.hpp>
+#include <boost/foreach.hpp>
+#include <boost/config.hpp>
+
+namespace fs = boost::filesystem;
+
+int main()
+{
+    {
+        fs::directory_iterator const it;
+
+        BOOST_FOREACH( fs::path const& p, it )
+        {
+            p.string();
+        }
+    }
+
+#if !defined(BOOST_NO_CXX11_RANGE_BASED_FOR)
+
+    {
+        fs::directory_iterator const it;
+
+        for( fs::path const& p: it )
+        {
+            p.string();
+        }
+    }
+
+#endif
+
+    {
+        fs::recursive_directory_iterator it;
+
+        BOOST_FOREACH( fs::path const& p, it )
+        {
+            p.string();
+        }
+    }
+
+#if !defined(BOOST_NO_CXX11_RANGE_BASED_FOR)
+
+    {
+        fs::recursive_directory_iterator const it;
+
+        for( fs::path const& p: it )
+        {
+            p.string();
+        }
+    }
+
+#endif
+}
diff --git a/src/boost/libs/filesystem/test/fstream_test.cpp b/src/boost/libs/filesystem/test/fstream_test.cpp
new file mode 100644
index 00000000..dff359aa
--- /dev/null
+++ b/src/boost/libs/filesystem/test/fstream_test.cpp
@@ -0,0 +1,169 @@
+//  fstream_test.cpp  ------------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2002
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/fstream.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/filesystem/operations.hpp>
+#include <string>
+#include <iostream>
+#include <cstdio> // for std::remove
+
+#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
+
+namespace fs = boost::filesystem;
+
+#include <boost/config.hpp>
+#ifdef BOOST_NO_STDC_NAMESPACE
+  namespace std { using ::remove; }
+#endif
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+namespace
+{
+  bool cleanup = true;
+
+  void test(const fs::path & p)
+  {
+    fs::remove(p);
+    {
+      std::cout << " in test 1\n";
+      fs::filebuf fb1;
+      fb1.open(p, std::ios_base::out);
+      BOOST_TEST(fb1.is_open());
+    }
+    {
+      std::cout << " in test 2\n";
+      fs::filebuf fb2;
+      fb2.open(p, std::ios_base::in);
+      BOOST_TEST(fb2.is_open());
+    }
+    {
+      std::cout << " in test 3\n";
+      fs::ifstream tfs(p);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 4\n";
+      fs::ifstream tfs(p / p.filename()); // should fail
+      BOOST_TEST(!tfs.is_open());
+    }
+    {
+      std::cout << " in test 5\n";
+      fs::ifstream tfs(p, std::ios_base::in);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 6\n";
+      fs::ifstream tfs;
+      tfs.open(p);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 7\n";
+      fs::ifstream tfs;
+      tfs.open(p, std::ios_base::in);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 8\n";
+      fs::ofstream tfs(p);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 9\n";
+      fs::ofstream tfs(p, std::ios_base::out);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 10\n";
+      fs::ofstream tfs;
+      tfs.open(p);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 11\n";
+      fs::ofstream tfs;
+      tfs.open(p, std::ios_base::out);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 12\n";
+      fs::fstream tfs(p);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 13\n";
+      fs::fstream tfs(p, std::ios_base::in|std::ios_base::out);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 14\n";
+      fs::fstream tfs;
+      tfs.open(p);
+      BOOST_TEST(tfs.is_open());
+    }
+    {
+      std::cout << " in test 15\n";
+      fs::fstream tfs;
+      tfs.open(p, std::ios_base::in|std::ios_base::out);
+      BOOST_TEST(tfs.is_open());
+    }
+
+    if (cleanup)
+      fs::remove(p);
+
+  } // test
+} // unnamed namespace
+
+int cpp_main(int argc, char*[])
+{
+  if (argc > 1) cleanup = false;
+
+  std::cout << "BOOST_FILESYSTEM_C_STR defined as \""
+            << BOOST_STRINGIZE(BOOST_FILESYSTEM_C_STR) << "\"\n";
+
+  // test narrow characters
+  std::cout << "narrow character tests:\n";
+  test("narrow_fstream_test");
+
+
+  // So that tests are run with known encoding, use Boost UTF-8 codecvt
+  std::locale global_loc = std::locale();
+  std::locale loc(global_loc, new fs::detail::utf8_codecvt_facet);
+  fs::path::imbue(loc);
+
+  // test with some wide characters
+  //  \u2780 is circled 1 against white background == e2 9e 80 in UTF-8
+  //  \u2781 is circled 2 against white background == e2 9e 81 in UTF-8
+  //  \u263A is a white smiling face
+  std::cout << "\nwide character tests:\n";
+  std::wstring ws(L"wide_fstream_test_");
+  ws += 0x2780;
+  ws += 0x263A;
+  test(ws);
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/issues/10038.cpp b/src/boost/libs/filesystem/test/issues/10038.cpp
new file mode 100644
index 00000000..341e7a94
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/10038.cpp
@@ -0,0 +1,8 @@
+#include <boost/filesystem.hpp>
+
+int main(void)
+{
+    boost::filesystem::copy_file("a", "b");
+    return 0;
+}
+
diff --git a/src/boost/libs/filesystem/test/issues/10205.cpp b/src/boost/libs/filesystem/test/issues/10205.cpp
new file mode 100644
index 00000000..4cf5e728
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/10205.cpp
@@ -0,0 +1,17 @@
+// Linux test; before running: export LANG=foo
+
+#include <locale>
+#include <iostream>
+#include <string>
+#include <boost/filesystem/path.hpp>
+
+int main()
+{
+  std::string pathname = "/some/filesystem/path/%%%%";
+
+  boost::filesystem::path path(pathname);
+
+  std::wcout << path.wstring() << std::endl;
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/issues/10485.cpp b/src/boost/libs/filesystem/test/issues/10485.cpp
new file mode 100644
index 00000000..81ba2136
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/10485.cpp
@@ -0,0 +1,14 @@
+//  Copyright iamvfx@gmail.com 2014
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#include <stdio.h>
+#include <boost/filesystem.hpp>
+
+int main()
+{
+  boost::filesystem::path dir("/");
+  for (char c : dir.filename().string())
+    printf("%c\n", c);
+}
diff --git a/src/boost/libs/filesystem/test/issues/10641.cpp b/src/boost/libs/filesystem/test/issues/10641.cpp
new file mode 100644
index 00000000..ff90784e
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/10641.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <boost/filesystem/path.hpp>
+using namespace std;
+namespace fs = boost::filesystem;
+int main(int argc, char** argv)
+{
+
+	try
+	{
+		fs::path my_path("test/test.txt");
+		cout << "current path is      " << my_path << endl;
+		cout << "parent path is       " << my_path.parent_path() << endl;
+	}
+	catch(std::exception& e) {
+		cerr << endl << "Error during execution: " << e.what() << endl << endl;
+		return EXIT_FAILURE;
+	}
+	return EXIT_SUCCESS;
+}
+
diff --git a/src/boost/libs/filesystem/test/issues/11166-remove-race.cpp b/src/boost/libs/filesystem/test/issues/11166-remove-race.cpp
new file mode 100644
index 00000000..e5ba61a5
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/11166-remove-race.cpp
@@ -0,0 +1,38 @@
+#include <boost/filesystem.hpp>
+#include <boost/thread.hpp>
+#include <fstream>
+
+boost::condition_variable cond;
+boost::mutex mut;
+
+#define FNAME ("remove-test")
+void remover()
+{
+    while(1)
+    {
+        boost::filesystem::remove(FNAME);
+    }
+}
+
+void creater()
+{
+    for(int i=0; i<100000; i++) std::fstream(FNAME, std::fstream::out);
+}
+
+int main()
+{
+    boost::filesystem::remove(FNAME);
+    boost::filesystem::remove(FNAME);
+
+    std::cout <<
+        "If you got this far, it's OK to remove a file that doesn't exist\n"
+        "Now trying with one creator thread and two remover threads.\n"
+        "This is likely to crash after just a few seconds at most." <<
+        std::endl;
+
+    boost::thread c(creater), r1(remover), r2(remover);
+
+    c.join();
+    r1.interrupt(); r1.join();
+    r2.interrupt(); r2.join();
+}
diff --git a/src/boost/libs/filesystem/test/issues/11228--filtered-recursive_directory_iterator-range.cpp b/src/boost/libs/filesystem/test/issues/11228--filtered-recursive_directory_iterator-range.cpp
new file mode 100644
index 00000000..ac44d2d6
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/11228--filtered-recursive_directory_iterator-range.cpp
@@ -0,0 +1,25 @@
+#include <boost/filesystem.hpp>
+#include <boost/range.hpp>
+#include <boost/range/algorithm.hpp>
+#include <boost/range/adaptors.hpp>
+#include <vector>
+#include <iostream>
+
+namespace fs = boost::filesystem;
+using namespace boost::adaptors;
+
+int main() {
+    fs::recursive_directory_iterator beg("."), end;
+
+    auto fileFilter = [](fs::path const & path)
+    {
+      return is_regular_file(path);
+    };
+
+    std::vector<fs::path> paths;
+    copy(boost::make_iterator_range(beg, end) | filtered(fileFilter),
+      std::back_inserter(paths));
+
+    for(auto& p : paths)
+        std::cout << p << "\n";
+}
+\ No newline at end of file
diff --git a/src/boost/libs/filesystem/test/issues/3332/test.cpp b/src/boost/libs/filesystem/test/issues/3332/test.cpp
new file mode 100644
index 00000000..9456a7a8
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/3332/test.cpp
@@ -0,0 +1,37 @@
+#include <boost/filesystem.hpp>
+#include <cvt/cp950>
+#include <iostream>
+#include <string>
+#include <locale>
+
+namespace fs = boost::filesystem;
+
+int main(void) {
+
+  std::locale global_loc = std::locale();
+  std::locale loc(global_loc, new stdext::cvt::codecvt_cp950<wchar_t>);
+  fs::path::imbue(loc);
+
+  std::cout <<
+    "HEADS UP! PIPE OUTPUT TO FILE AND INSPECT WITH HEX OR CP950 EDITOR.\n"
+    "WINDOWS COMMAND PROMPT FONTS DON'T SUPPORT CHINESE,\n"
+    "EVEN WITH CODEPAGE SET AND EVEN AS OF WIN 10 TECH PREVIEW." << std::endl;
+
+  fs::recursive_directory_iterator end;
+  fs::recursive_directory_iterator iter
+    ("C:/boost/test-files/utf-8");
+
+  while (iter != end)
+  {
+    if (fs::is_directory(*iter))
+    {
+      std::cout << "[directory] " << iter->path().generic_string() << std::endl;
+    }
+    else if (fs::is_regular(*iter))
+    {
+      std::cout << " [file] " << iter->path().generic_string() << std::endl;
+    }
+    ++iter;
+  }
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/issues/4329.-basename.cpp b/src/boost/libs/filesystem/test/issues/4329.-basename.cpp
new file mode 100644
index 00000000..a07648b3
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/4329.-basename.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <boost/filesystem.hpp>
+using boost::filesystem::path;
+
+int main()
+{
+  std::cout << path("a").stem() << std::endl;
+  std::cout << path("a/").stem() << std::endl;
+  std::cout << path("a/b").stem() << std::endl;
+  std::cout << path("a/b/").stem() << std::endl;
+  std::cout << path("a/b/c").stem() << std::endl;
+  std::cout << path("a/b/c/").stem() << std::endl;
+  std::cout << path("a/b/c/d").stem() << std::endl;
+  std::cout << path("a/b/c/d/").stem() << std::endl;
+  std::cout << path("a/b/c/d/e").stem() << std::endl;
+  std::cout << path("a/b/c/d/e/").stem() << std::endl;
+  return 0;
+}
+
+
diff --git a/src/boost/libs/filesystem/test/issues/5300-temp-dir-path-130.cpp b/src/boost/libs/filesystem/test/issues/5300-temp-dir-path-130.cpp
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/5300-temp-dir-path-130.cpp
diff --git a/src/boost/libs/filesystem/test/issues/6638-global-init-fails-3.cpp b/src/boost/libs/filesystem/test/issues/6638-global-init-fails-3.cpp
new file mode 100644
index 00000000..b0a62ede
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/6638-global-init-fails-3.cpp
@@ -0,0 +1,36 @@
+#include <boost/filesystem.hpp>
+#include <boost/detail/lightweight_main.hpp>
+#include <string>
+
+using namespace boost::filesystem;
+
+//  The original bug report was that this broke:
+//     path p(L"C:\\TEMP\\");
+//     path r(p / "narrow");
+//  That code now works, but ...
+
+//  Nils Gladitz has provided this example ...
+
+class Test
+{
+public:
+	~Test()
+	{
+		path p(L"C:\\TEMP\\");
+		path r(p / "narrow");
+	}
+};
+
+//  path p("narrow");
+
+//  fails if static linked and Test object is global variable, but does not fail if
+//  path p("narrow") line above is not commented out, and also does not fail if the
+//  Test test2 line below is commented out.
+
+Test test1;
+Test test2;
+
+int cpp_main(int, char* [])
+{
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/issues/70-71-copy.cpp b/src/boost/libs/filesystem/test/issues/70-71-copy.cpp
new file mode 100644
index 00000000..ed67f170
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/70-71-copy.cpp
@@ -0,0 +1,20 @@
+
+// Copyright 2018 Peter Dimov.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+// See library home page at http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+namespace fs = boost::filesystem;
+
+int main()
+{
+    BOOST_TEST_THROWS( fs::copy( "/tmp/non-existent-a", "/tmp/non-existent-b" ), std::exception );
+    return boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/issues/8930.cpp b/src/boost/libs/filesystem/test/issues/8930.cpp
new file mode 100644
index 00000000..280e5ed6
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/8930.cpp
@@ -0,0 +1,7 @@
+// Before running this test: export LANG=foo
+
+#include <boost/filesystem.hpp>
+int main() {
+  boost::filesystem::path("/abc").root_directory();
+}
+
diff --git a/src/boost/libs/filesystem/test/issues/9054_static_const_codecvt_segfault_pre_main.cpp b/src/boost/libs/filesystem/test/issues/9054_static_const_codecvt_segfault_pre_main.cpp
new file mode 100644
index 00000000..e30617e0
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/9054_static_const_codecvt_segfault_pre_main.cpp
@@ -0,0 +1,10 @@
+#include "boost/filesystem.hpp"
+
+static const boost::filesystem::path::codecvt_type &dummy =
+  boost::filesystem::path::codecvt();
+
+int main()
+{
+  return 0;
+}
+
diff --git a/src/boost/libs/filesystem/test/issues/9219.cpp b/src/boost/libs/filesystem/test/issues/9219.cpp
new file mode 100644
index 00000000..85d4b5c7
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/9219.cpp
@@ -0,0 +1,40 @@
+//  Boost 9219.cpp  --------------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2014
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//  In researching filesystem issues it is convenient to have a program that can be     //
+//  quickly modified to test reported problems. That's the purpose of this file and     //
+//  its associated Visual Studio and Boost.Build infrastructure.                        //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+#include <boost/config/warning_disable.hpp>
+
+#include <boost/filesystem.hpp>
+
+#include <iostream>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+using std::cout;
+using std::endl;
+namespace fs = boost::filesystem;
+
+//------------------------------------  cpp_main  --------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+  cout << "Hello, 9219" << endl;
+  cout << "This is a test for non-Windows systems" << endl;
+
+  BOOST_TEST(fs::exists(const_cast<char*>(".")));
+
+  return ::boost::report_errors();
+} // cpp_main
diff --git a/src/boost/libs/filesystem/test/issues/Jamfile.v2 b/src/boost/libs/filesystem/test/issues/Jamfile.v2
new file mode 100644
index 00000000..47fce407
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/Jamfile.v2
@@ -0,0 +1,38 @@
+# Boost Filesystem test/issues Jamfile
+
+# Copyright Beman Dawes 2014
+
+# Distributed under the Boost Software License, Version 1.0.
+# See www.boost.org/LICENSE_1_0.txt
+
+# Library home page: http://www.boost.org/libs/filesystem
+
+project
+    : requirements
+      <library>/boost/filesystem//boost_filesystem
+      <link>static
+    ;
+
+   test-suite "filesystem-issues" :
+#       [ run 9054_static_const_codecvt_segfault_pre_main.cpp
+#           :  :  : <link>shared : 9054_shared ]
+#       [ run 9054_static_const_codecvt_segfault_pre_main.cpp
+#           :  :  : <link>static : 9054_static ]
+#       [ run hello_filesystem.cpp
+#           :  :  : <link>shared : hello_shared ]
+#       [ run hello_filesystem.cpp
+#           :  :  : <link>static : hello_static ]
+#       [ run 9219.cpp
+#           :  :  : <link>shared : 9219_shared ]
+#       [ run 9219.cpp
+#           :  :  : <link>static : 9219_static ]
+#       [ run 10485.cpp
+#           :  :  : <link>shared <test-info>always_show_run_output ]
+#       [ run copy_file-compilation-error-2015-05-04.cpp ]
+        [ run 6638-convert_aux-fails-init-global.cpp
+           :  :  : <link>shared : 6638_shared ]
+        [ run 6638-convert_aux-fails-init-global.cpp
+           :  :  : <link>static : 6638_static ]
+
+       ;
+
diff --git a/src/boost/libs/filesystem/test/issues/boost-no-inspect b/src/boost/libs/filesystem/test/issues/boost-no-inspect
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/boost-no-inspect
diff --git a/src/boost/libs/filesystem/test/issues/copy_file-compilation-error-2015-05-04.cpp b/src/boost/libs/filesystem/test/issues/copy_file-compilation-error-2015-05-04.cpp
new file mode 100644
index 00000000..c9034d6f
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/copy_file-compilation-error-2015-05-04.cpp
@@ -0,0 +1,14 @@
+// Rob Conde <rob.conde@ai-solutions.com> reports this fails
+// to compile for Boost 1.58 with g++ 4.4.7 but is OK with FC++ 2013
+
+#include "boost/filesystem/operations.hpp"
+
+void myFunc()
+{
+   using namespace boost::filesystem;
+
+   copy_option opt(copy_option::overwrite_if_exists);
+
+   copy_file(path("p1"),path("p2"),copy_option::overwrite_if_exists);
+//   copy_file(path("p1"),path("p2"),opt);
+}
+\ No newline at end of file
diff --git a/src/boost/libs/filesystem/test/issues/fchmodat_AT_SYMLINK_NOFOLLOW_6659.cpp b/src/boost/libs/filesystem/test/issues/fchmodat_AT_SYMLINK_NOFOLLOW_6659.cpp
new file mode 100644
index 00000000..e69f9ba2
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/fchmodat_AT_SYMLINK_NOFOLLOW_6659.cpp
@@ -0,0 +1,38 @@
+// Test program to demonstrate that Linux does not support AT_SYMLINK_NOFOLLOW
+
+//  Copyright Duncan Exon Smith 2012
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+// Test this by running:
+//
+// rm -rf data && mkdir data && g++ -otest-fchmodat fchmodat_AT_SYMLINK_NOFOLLOW_6659.cpp && (cd data && ../test-fchmodat)
+//
+// If no assertions go off, then it looks like fchmodat is supported,
+// but AT_SYMLINK_NOFOLLOW is not supported.
+
+#include <fstream>
+#include <cassert>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <cerrno>
+
+#ifdef NDEBUG
+# error This program depends on assert() so makes no sense if NDEBUG is defined
+#endif
+
+int main(int argc, char *argv[])
+{
+    { std::ofstream file("out"); file << "contents"; }
+
+    assert(!::symlink("out", "sym"));
+
+    assert(!::fchmodat(AT_FDCWD, "out", S_IRUSR | S_IWUSR | S_IXUSR, 0));
+    assert(!::fchmodat(AT_FDCWD, "sym", S_IRUSR | S_IWUSR | S_IXUSR, 0));
+
+    assert(::fchmodat(AT_FDCWD, "sym", S_IRUSR | S_IWUSR | S_IXUSR, AT_SYMLINK_NOFOLLOW) == -1);
+    assert(errno == ENOTSUP);
+
+    return 0;
+}
diff --git a/src/boost/libs/filesystem/test/issues/hello_filesystem.cpp b/src/boost/libs/filesystem/test/issues/hello_filesystem.cpp
new file mode 100644
index 00000000..f98b2f71
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/hello_filesystem.cpp
@@ -0,0 +1,39 @@
+//  Boost hello_filesystem.cpp  --------------------------------------------------------//
+
+//  Copyright Beman Dawes 2014
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//  In researching filesystem issues it is convenient to have a program that can be     //
+//  quickly modified to test reported problems. That's the purpose of this file and     //
+//  its associated Visual Studio and Boost.Build infrastructure.                        //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+#include <boost/config/warning_disable.hpp>
+
+#include <boost/filesystem.hpp>
+
+#include <iostream>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+using std::cout;
+using std::endl;
+namespace fs = boost::filesystem;
+
+//------------------------------------  cpp_main  --------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+  cout << "Hello, filesystem world" << endl;
+
+  BOOST_TEST(fs::exists("."));
+
+  return ::boost::report_errors();
+} // cpp_main
diff --git a/src/boost/libs/filesystem/test/issues/readme.txt b/src/boost/libs/filesystem/test/issues/readme.txt
new file mode 100644
index 00000000..cf8198e5
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/readme.txt
@@ -0,0 +1,9 @@
+This directory contains tests related to specific issues.
+
+The names are intended to indicate both the function or condition being tested
+and the issue number.
+
+-----
+Copyright Beman Dawes 2012
+Distributed under the Boost Software License, Version 1.0.
+See http://www.boost.org/LICENSE_1_0.txt
diff --git a/src/boost/libs/filesystem/test/issues/recurse_dir_iter_5403.cpp b/src/boost/libs/filesystem/test/issues/recurse_dir_iter_5403.cpp
new file mode 100644
index 00000000..7e7ab6c4
--- /dev/null
+++ b/src/boost/libs/filesystem/test/issues/recurse_dir_iter_5403.cpp
@@ -0,0 +1,132 @@
+//  Boost Filesystem recurse_dir_iter_test.cpp  ----------------------------------------//
+
+//  Copyright Beman Dawes 2014.
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/operations.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/cerrno.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+namespace fs = boost::filesystem;
+using boost::system::error_code;
+using boost::system::system_category;
+using boost::system::system_error;
+
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#ifdef BOOST_WINDOWS_API
+# include <windows.h>
+#endif
+namespace
+{
+  typedef int errno_t;
+  std::string platform(BOOST_PLATFORM);
+  bool report_throws = false;
+  bool cleanup = true;
+  bool skip_long_windows_tests = false;
+  unsigned short language_id;  // 0 except for Windows
+
+} // unnamed namespace
+
+//------------------------------------------------------------------------------------//
+//                                                                                    //
+//                                    main                                            //
+//                                                                                    //
+//------------------------------------------------------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+  // document state of critical macros
+#ifdef BOOST_POSIX_API
+  cout << "BOOST_POSIX_API is defined\n";
+#endif
+#ifdef BOOST_WINDOWS_API
+  cout << "BOOST_WINDOWS_API is defined\n";
+#endif
+
+  for (; argc > 1; --argc, ++argv)
+  {
+    //if (*argv[1]=='-' && *(argv[1]+1)=='t')
+    //  report_throws = true;
+    //else if (*argv[1]=='-' && *(argv[1]+1)=='x')
+    //  cleanup = false;
+    //else if (*argv[1]=='-' && *(argv[1]+1)=='w')
+    //  skip_long_windows_tests = true;
+  }
+
+  // The choice of platform to test is made at runtime rather than compile-time
+  // so that compile errors for all platforms will be detected even though
+  // only the current platform is runtime tested.
+# if defined(BOOST_POSIX_API)
+  platform = "POSIX";
+# elif defined(BOOST_WINDOWS_API)
+  platform = "Windows";
+#   if !defined(__MINGW32__) && !defined(__CYGWIN__)
+  language_id = ::GetUserDefaultUILanguage();
+#   else
+  language_id = 0x0409; // Assume US English
+#   endif
+# else
+#   error neither BOOST_POSIX_API nor BOOST_WINDOWS_API is defined. See boost/system/api_config.hpp
+# endif
+  cout << "API is " << platform << endl;
+  cout << "initial_path() is " << fs::initial_path() << endl;
+  fs::path ip = fs::initial_path();
+
+  for (fs::path::const_iterator it = ip.begin(); it != ip.end(); ++it)
+  {
+    if (it != ip.begin())
+      cout << ", ";
+    cout << *it;
+  }
+  cout << endl;
+
+  //  From the root, walk the directory tree looking for a permissions error
+
+  fs::recursive_directory_iterator it("/");
+  fs::recursive_directory_iterator end_it;
+
+  //  The increment function has an invarient that it always makes progress,
+  //  so even if an error occurs this loop will eventually terminate.
+
+  while (it != end_it)
+  {
+    error_code ec;
+    fs::path init_path = it->path();
+    it.increment(ec);
+    if (ec)
+    {
+      cout << "initial path: " << init_path << endl;
+      cout << "error_code: " << ec.value() << " with msg: " << ec.message() << endl;
+      if (it != end_it)
+        cout << "post-increment path: " << it->path() << endl;
+    }
+  }
+
+  cout << "returning from main()" << endl;
+  return ::boost::report_errors();
+} // main
diff --git a/src/boost/libs/filesystem/test/large_file_support_test.cpp b/src/boost/libs/filesystem/test/large_file_support_test.cpp
new file mode 100644
index 00000000..553e09d8
--- /dev/null
+++ b/src/boost/libs/filesystem/test/large_file_support_test.cpp
@@ -0,0 +1,42 @@
+//  Boost large_file_support_test.cpp  ---------------------------------------//
+
+//  Copyright Beman Dawes 2004.
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//  See deprecated_test for tests of deprecated features
+#define BOOST_FILESYSTEM_NO_DEPRECATED
+#define BOOST_SYSTEM_NO_DEPRECATED
+
+#include <boost/filesystem/operations.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+namespace fs = boost::filesystem;
+
+#include <iostream>
+
+int main()
+{
+  if ( fs::detail::possible_large_file_size_support() )
+  {
+    std::cout << "It appears that file sizes greater that 2 gigabytes are possible\n"
+                 "for this configuration on this platform since the operating system\n"
+                 "does use a large enough integer type to report large file sizes.\n\n"
+                 "Whether or not such support is actually present depends on the OS\n";
+    return 0;
+  }
+  std::cout << "The operating system is using an integer type to report file sizes\n"
+               "that can not represent file sizes greater that 2 gigabytes (31-bits).\n"
+               "Thus the Filesystem Library will not correctly deal with such large\n"
+               "files. If you think that this operatiing system should be able to\n"
+               "support large files, please report the problem to the Boost developers\n"
+               "mailing list.\n";
+  return 1;
+}
diff --git a/src/boost/libs/filesystem/test/locale_info.cpp b/src/boost/libs/filesystem/test/locale_info.cpp
new file mode 100644
index 00000000..db57bb15
--- /dev/null
+++ b/src/boost/libs/filesystem/test/locale_info.cpp
@@ -0,0 +1,88 @@
+//  locale_info.cpp  ---------------------------------------------------------//
+
+//  Copyright Beman Dawes 2011
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#include <locale>
+#include <iostream>
+#include <exception>
+#include <cstdlib>
+using namespace std;
+
+#ifdef _MSC_VER
+#  pragma warning(push)
+#  pragma warning(disable: 4996)  // ... Function call with parameters that may be unsafe
+#endif
+
+namespace
+{
+  void facet_info(const locale& loc, const char* msg)
+  {
+    cout << "has_facet<std::codecvt<wchar_t, char, std::mbstate_t> >("
+      << msg << ") is "
+      << (has_facet<std::codecvt<wchar_t, char, std::mbstate_t> >(loc)
+          ? "true\n"
+          : "false\n");
+  }
+
+  void default_info()
+  {
+    try
+    {
+      locale loc;
+      cout << "\nlocale default construction OK" << endl;
+      facet_info(loc, "locale()");
+    }
+    catch (const exception& ex)
+    {
+      cout << "\nlocale default construction threw: " << ex.what() << endl;
+    }
+  }
+
+  void null_string_info()
+  {
+    try
+    {
+      locale loc("");
+      cout << "\nlocale(\"\") construction OK" << endl;
+      facet_info(loc, "locale(\"\")");
+    }
+    catch (const exception& ex)
+    {
+      cout << "\nlocale(\"\") construction threw: " << ex.what() << endl;
+    }
+  }
+
+  void classic_info()
+  {
+    try
+    {
+      locale loc(locale::classic());
+      cout << "\nlocale(locale::classic()) copy construction OK" << endl;
+      facet_info(loc, "locale::classic()");
+    }
+    catch (const exception& ex)
+    {
+      cout << "\nlocale(locale::clasic()) copy construction threw: " << ex.what() << endl;
+    }
+  }
+}
+
+int main()
+{
+  const char* lang = getenv("LANG");
+  cout << "\nLANG environmental variable is "
+    << (lang ? lang : "not present") << endl;
+
+  default_info();
+  null_string_info();
+  classic_info();
+
+  return 0;
+}
+
+#ifdef _MSC_VER
+#  pragma warning(pop)
+#endif
diff --git a/src/boost/libs/filesystem/test/long_path_test.cpp b/src/boost/libs/filesystem/test/long_path_test.cpp
new file mode 100644
index 00000000..fd4a7fcb
--- /dev/null
+++ b/src/boost/libs/filesystem/test/long_path_test.cpp
@@ -0,0 +1,59 @@
+//  long_path_test.cpp  ----------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2011
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  http://www.boost.org/LICENSE_1_0.txt
+
+//  See http://www.boost.org/libs/btree for documentation.
+
+//  See http://msdn.microsoft.com/en-us/library/aa365247%28v=vs.85%29.aspx
+
+#include <boost/config/warning_disable.hpp>
+
+#include <boost/filesystem.hpp>
+#include <iostream>
+#include <string>
+
+using namespace boost::filesystem;
+
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+namespace
+{
+}  // unnamed namespace
+
+int cpp_main(int, char*[])
+{
+
+  std::string prefix("d:\\temp\\");
+  std::cout << "prefix is " << prefix << '\n';
+
+  const std::size_t safe_size
+    = 260 - prefix.size() - 100;  // Windows MAX_PATH is 260
+
+  std::string safe_x_string(safe_size, 'x');
+  std::string safe_y_string(safe_size, 'y');
+  std::string path_escape("\\\\?\\");
+
+  path x_p(prefix + safe_x_string);
+  path y_p(path_escape + prefix + safe_x_string + "\\" + safe_y_string);
+
+  std::cout << "x_p.native().size() is " << x_p.native().size() << '\n';
+  std::cout << "y_p.native().size() is " << y_p.native().size() << '\n';
+
+  create_directory(x_p);
+  BOOST_TEST(exists(x_p));
+  create_directory(y_p);
+  BOOST_TEST(exists(y_p));
+
+  //std::cout << "directory x.../y... ready for testing, where ... is " << safe_size
+  //          << " repeats of x and y, respectively\n";
+
+  BOOST_TEST(exists(x_p));
+
+  //remove_all(x_p);
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/macro_default_test.cpp b/src/boost/libs/filesystem/test/macro_default_test.cpp
new file mode 100644
index 00000000..4f8de196
--- /dev/null
+++ b/src/boost/libs/filesystem/test/macro_default_test.cpp
@@ -0,0 +1,36 @@
+//  macro_default_test program  --------------------------------------------------------//
+
+//  Copyright Beman Dawes 2012
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#undef BOOST_ALL_DYN_LINK
+#undef BOOST_ALL_STATIC_LINK
+#undef BOOST_FILESYSTEM_DYN_LINK
+#undef BOOST_FILESYSTEM_STATIC_LINK
+#undef BOOST_SYSTEM_DYN_LINK
+#undef BOOST_SYSTEM_STATIC_LINK
+
+#ifndef BOOST_ALL_NO_LIB
+# define BOOST_ALL_NO_LIB
+#endif
+
+#include <boost/filesystem/config.hpp>
+#include <boost/system/config.hpp>
+
+#ifndef BOOST_FILESYSTEM_STATIC_LINK
+# error BOOST_FILESYSTEM_STATIC_LINK not set by default
+#endif
+
+
+#ifndef BOOST_SYSTEM_STATIC_LINK
+# error BOOST_SYSTEM_STATIC_LINK not set by default
+#endif
+
+int main()
+{
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/msvc/boost-no-inspect b/src/boost/libs/filesystem/test/msvc/boost-no-inspect
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/boost/libs/filesystem/test/msvc/boost-no-inspect
diff --git a/src/boost/libs/filesystem/test/msvc/common.props b/src/boost/libs/filesystem/test/msvc/common.props
new file mode 100644
index 00000000..f256ad17
--- /dev/null
+++ b/src/boost/libs/filesystem/test/msvc/common.props
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
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+  <ItemDefinitionGroup>
+    <ClCompile>
+      <AdditionalIncludeDirectories>../../../../..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <PreprocessorDefinitions>BOOST_SYSTEM_NO_DEPRECATED;BOOST_ALL_NO_LIB;BOOST_ALL_DYN_LINK;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ExceptionHandling>Async</ExceptionHandling>
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+      <WarningLevel>Level4</WarningLevel>
+    </ClCompile>
+    <Link>
+      <AdditionalLibraryDirectories>C:\boost\develop\stage\lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+</Project>
+\ No newline at end of file
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new file mode 100644
index 00000000..10364215
--- /dev/null
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new file mode 100644
index 00000000..55ff38ea
--- /dev/null
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+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
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+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
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+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "tut6b", "tut6b\tut6b.vcxproj", "{4A77CA6A-8E72-4CC6-9FE7-2C555C51815C}"
+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
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+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
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+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
+EndProject
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+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "file_status", "file_status\file_status.vcxproj", "{43C4B4D8-0893-4C86-B9FD-6A7DEB1A4426}"
+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
+EndProject
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+EndProject
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+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "filesystem_lib", "filesystem_lib\filesystem_lib.vcxproj", "{2C1770A4-4AC3-4102-9D36-E652DBB686D8}"
+	ProjectSection(ProjectDependencies) = postProject
+		{3640605D-6F82-493D-879F-8F30762DA554} = {3640605D-6F82-493D-879F-8F30762DA554}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "path_test_static", "path_test_static\path_test_static.vcxproj", "{3B3010C5-D6D7-4320-A992-4EA61F256279}"
+EndProject
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+	ProjectSection(ProjectDependencies) = postProject
+		{3640605D-6F82-493D-879F-8F30762DA554} = {3640605D-6F82-493D-879F-8F30762DA554}
+		{2C1770A4-4AC3-4102-9D36-E652DBB686D8} = {2C1770A4-4AC3-4102-9D36-E652DBB686D8}
+	EndProjectSection
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+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "path_timings", "path_timings\path_timings.vcxproj", "{3AB1E2A1-9616-4E91-83F4-1D7A33A586DE}"
+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "recurse_dir_iter_test", "recurse_dir_iter_test\recurse_dir_iter_test.vcxproj", "{C6594EC2-1BDA-41A1-B2C0-7FB8AE713CF8}"
+	ProjectSection(ProjectDependencies) = postProject
+		{F94CCADD-A90B-480C-A304-C19D015D36B1} = {F94CCADD-A90B-480C-A304-C19D015D36B1}
+		{FFD738F7-96F0-445C-81EA-551665EF53D1} = {FFD738F7-96F0-445C-81EA-551665EF53D1}
+	EndProjectSection
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+EndProject
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+EndProject
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+EndProject
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+EndProject
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+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
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+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
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+\ No newline at end of file
diff --git a/src/boost/libs/filesystem/test/msvc/windows_attributes/windows_attributes.vcxproj b/src/boost/libs/filesystem/test/msvc/windows_attributes/windows_attributes.vcxproj
new file mode 100644
index 00000000..f7d3fde7
--- /dev/null
+++ b/src/boost/libs/filesystem/test/msvc/windows_attributes/windows_attributes.vcxproj
@@ -0,0 +1,95 @@
+<?xml version="1.0" encoding="utf-8"?>
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+\ No newline at end of file
diff --git a/src/boost/libs/filesystem/test/odr1_test.cpp b/src/boost/libs/filesystem/test/odr1_test.cpp
new file mode 100644
index 00000000..4d73e181
--- /dev/null
+++ b/src/boost/libs/filesystem/test/odr1_test.cpp
@@ -0,0 +1,24 @@
+//  Boost Filesystem odr1_test.cpp  ----------------------------------------------------//
+
+//  Copyright Beman Dawes 2014.
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem.hpp>
+
+namespace boost
+{
+  namespace filesystem
+  {
+    void tu2();
+  }
+}
+
+int main()
+{
+  boost::filesystem::tu2();
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/odr2_test.cpp b/src/boost/libs/filesystem/test/odr2_test.cpp
new file mode 100644
index 00000000..948666b2
--- /dev/null
+++ b/src/boost/libs/filesystem/test/odr2_test.cpp
@@ -0,0 +1,18 @@
+//  Boost Filesystem odr2_test.cpp  ----------------------------------------------------//
+
+//  Copyright Beman Dawes 2014.
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/filesystem.hpp>
+
+namespace boost
+{
+  namespace filesystem
+  {
+    void tu2() {}
+  }
+}
diff --git a/src/boost/libs/filesystem/test/operations_test.cpp b/src/boost/libs/filesystem/test/operations_test.cpp
new file mode 100644
index 00000000..e9d24de7
--- /dev/null
+++ b/src/boost/libs/filesystem/test/operations_test.cpp
@@ -0,0 +1,2323 @@
+//  Boost operations_test.cpp  ---------------------------------------------------------//
+
+//  Copyright Beman Dawes 2002, 2009.
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/directory.hpp>
+#include <boost/filesystem/exception.hpp>
+#include <boost/filesystem/file_status.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/cerrno.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+namespace fs = boost::filesystem;
+using boost::system::error_code;
+using boost::system::system_category;
+using boost::system::system_error;
+
+#include <fstream>
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <cstring> // for strncmp, etc.
+#include <ctime>
+#include <cstdlib> // for system(), getenv(), etc.
+
+#ifdef BOOST_WINDOWS_API
+# include <windows.h>
+
+inline std::wstring convert(const char* c)
+{
+   std::string s(c);
+
+   return std::wstring(s.begin(), s.end());
+}
+
+//  Note: these three setenv* functions are not general solutions for the missing
+//  setenv* problem on VC++. See Microsoft's _putenv for that need, and ticker #7018
+//  for discussion and rationale for returning void for this test program, which needs
+//  to work for both the MSVC Runtime and the Windows Runtime (which does not support
+//  _putenv).
+
+inline void setenv_(const char* name, const fs::path::value_type* val, int)
+{
+  SetEnvironmentVariableW(convert(name).c_str(), val);
+}
+
+inline void setenv_(const char* name, const char* val, int)
+{
+  SetEnvironmentVariableW(convert(name).c_str(), convert(val).c_str());
+}
+
+inline void unsetenv_(const char* name)
+{
+  SetEnvironmentVariableW(convert(name).c_str(), 0);
+}
+
+#else
+
+#include <stdlib.h>  // allow unqualifed calls to env funcs on SunOS
+
+inline void setenv_(const char* name, const char* val, int ovw)
+{
+  setenv(name, val, ovw);
+}
+
+inline void unsetenv_(const char* name)
+{
+  unsetenv(name);
+}
+
+#endif
+
+//  on Windows, except for standard libaries known to have wchar_t overloads for
+//  file stream I/O, use path::string() to get a narrow character c_str()
+#if defined(BOOST_WINDOWS_API) \
+  && (!defined(_CPPLIB_VER) || _CPPLIB_VER < 405)  // not Dinkumware || no wide overloads
+# define BOOST_FILESYSTEM_C_STR string().c_str()  // use narrow, since wide not available
+#else  // use the native c_str, which will be narrow on POSIX, wide on Windows
+# define BOOST_FILESYSTEM_C_STR c_str()
+#endif
+
+#define CHECK_EXCEPTION(Functor,Expect) throws_fs_error(Functor,Expect,__LINE__)
+
+namespace
+{
+  typedef int errno_t;
+  std::string platform(BOOST_PLATFORM);
+  bool report_throws = false;
+  bool cleanup = true;
+  bool skip_long_windows_tests = false;
+
+  fs::directory_iterator end_itr;
+  fs::path dir;
+  fs::path d1;
+  fs::path d2;
+  fs::path f0;
+  fs::path f1;
+  fs::path d1f1;
+
+  bool create_symlink_ok(true);
+
+  fs::path ng(" no-way, Jose");
+
+  unsigned short language_id;  // 0 except for Windows
+
+  const fs::path temp_dir(fs::unique_path("op-test-%%%%-%%%%"));
+
+  void create_file(const fs::path & ph, const std::string & contents = std::string())
+  {
+    std::ofstream f(ph.BOOST_FILESYSTEM_C_STR);
+    if (!f)
+      throw fs::filesystem_error("operations_test create_file",
+      ph, error_code(errno, system_category()));
+    if (!contents.empty()) f << contents;
+  }
+
+  void verify_file(const fs::path & ph, const std::string & expected)
+  {
+    std::ifstream f(ph.BOOST_FILESYSTEM_C_STR);
+    if (!f)
+      throw fs::filesystem_error("operations_test verify_file",
+        ph, error_code(errno, system_category()));
+    std::string contents;
+    f >> contents;
+    if (contents != expected)
+      throw fs::filesystem_error("operations_test verify_file contents \""
+        + contents  + "\" != \"" + expected + "\"", ph, error_code());
+  }
+
+  template< typename F >
+    bool throws_fs_error(F func, errno_t en, int line)
+  {
+    try { func(); }
+
+    catch (const fs::filesystem_error & ex)
+    {
+      if (report_throws)
+      {
+        // use the what() convenience function to display exceptions
+        cout << "\n" << ex.what() << "\n";
+      }
+      if (en == 0
+        || en == ex.code().default_error_condition().value()) return true;
+      cout
+        << "\nWarning: line " << line
+        << " exception reports default_error_condition().value() "
+        << ex.code().default_error_condition().value()
+        << ", should be " << en
+        << "\n value() is " << ex.code().value()
+        << endl;
+      return true;
+    }
+    return false;
+  }
+
+  struct poison_category_impl: public boost::system::error_category
+  {
+    char const * name() const BOOST_NOEXCEPT { return "poison"; }
+    std::string message( int ) const { return "poison_category::message"; }
+  };
+
+  boost::system::error_category& poison_category()
+  {
+    static poison_category_impl instance;
+    return instance;
+  }
+
+  // compile-only two argument "do-the-right-thing" tests
+  //   verifies that all overload combinations compile without error
+  void do_the_right_thing_tests(bool call_ = false)
+  {
+    if (call_)
+    {
+      fs::path p;
+      std::string s;
+      const char* a = 0;
+      fs::copy_file(p, p);
+      fs::copy_file(s, p);
+      fs::copy_file(a, p);
+      fs::copy_file(p, s);
+      fs::copy_file(p, a);
+      fs::copy_file(s, s);
+      fs::copy_file(a, s);
+      fs::copy_file(s, a);
+      fs::copy_file(a, a);
+    }
+  }
+
+  void bad_file_size()
+  {
+    fs::file_size(" No way, Jose");
+  }
+
+  void bad_directory_size()
+  {
+    fs::file_size(fs::current_path());
+  }
+
+  fs::path bad_create_directory_path;
+  void bad_create_directory()
+  {
+    fs::create_directory(bad_create_directory_path);
+  }
+
+  void bad_equivalent()
+  {
+    fs::equivalent("no-such-path", "another-not-present-path");
+  }
+
+  fs::path bad_remove_dir;
+  void bad_remove()
+  {
+    fs::remove(bad_remove_dir);
+  }
+
+  class renamer
+  {
+  public:
+    renamer(const fs::path & p1, const fs::path & p2)
+      : from(p1), to(p2) {}
+    void operator()()
+    {
+      fs::rename(from, to);
+    }
+  private:
+    fs::path from;
+    fs::path to;
+  };
+
+  //------------------------------ debugging aids --------------------------------------//
+
+  //std::ostream& operator<<(std::ostream& os, const fs::file_status& s)
+  //{
+  //  if (s.type() == fs::status_error)        { os << "status_error"; }
+  //  else if (s.type() == fs::file_not_found) { os << "file_not_found"; }
+  //  else if (s.type() == fs::regular_file)   { os << "regular_file"; }
+  //  else if (s.type() == fs::directory_file) { os << "directory_file"; }
+  //  else if (s.type() == fs::symlink_file)   { os << "symlink_file"; }
+  //  else if (s.type() == fs::block_file)     { os << "block_file"; }
+  //  else if (s.type() == fs::character_file) { os << "character_file"; }
+  //  else if (s.type() == fs::fifo_file)      { os << "fifo_file"; }
+  //  else if (s.type() == fs::socket_file)    { os << "socket_file"; }
+  //  else if (s.type() == fs::reparse_file)   { os << "reparse_file"; }
+  //  else if (s.type() == fs::type_unknown)   { os << "type_unknown"; }
+  //  else                                     { os << "_detail_directory_symlink"; }
+  //  return os;
+  //}
+
+  //void dump_tree(const fs::path & root)
+  //{
+  //  cout << "dumping tree rooted at " << root << endl;
+  //  for (fs::recursive_directory_iterator it (root, fs::directory_options::follow_directory_symlink);
+  //       it != fs::recursive_directory_iterator();
+  //       ++it)
+  //  {
+  //    for (int i = 0; i <= it.level(); ++i)
+  //      cout << "  ";
+
+  //    cout << it->path();
+  //    if (fs::is_symlink(it->path()))
+  //    {
+  //      cout << " [symlink]" << endl;
+  //    }
+  //    else
+  //      cout << endl;
+  //  }
+  //}
+
+  //  exception_tests()  ---------------------------------------------------------------//
+
+#if defined(BOOST_GCC) && BOOST_GCC >= 80000
+#pragma GCC diagnostic push
+// catching polymorphic type "X" by value - that's the intention of the test
+#pragma GCC diagnostic ignored "-Wcatch-value"
+#endif
+
+  void exception_tests()
+  {
+    cout << "exception_tests..." << endl;
+    bool exception_thrown;
+
+    //  catch runtime_error by value
+
+    cout << "  catch runtime_error by value" << endl;
+    exception_thrown = false;
+    try
+    {
+      fs::create_directory("no-such-dir/foo/bar");
+    }
+    catch (std::runtime_error x)
+    {
+      exception_thrown = true;
+      if (report_throws) cout << x.what() << endl;
+      if (platform == "Windows" && language_id == 0x0409) // English (United States)
+        // the stdcxx standard library apparently appends additional info
+        // to what(), so check only the initial portion:
+        BOOST_TEST(std::strncmp(x.what(),
+          "boost::filesystem::create_directory",
+          sizeof("boost::filesystem::create_directory")-1) == 0);
+    }
+    BOOST_TEST(exception_thrown);
+
+    //  catch system_error by value
+
+    cout << "  catch system_error by value" << endl;
+    exception_thrown = false;
+    try
+    {
+      fs::create_directory("no-such-dir/foo/bar");
+    }
+    catch (system_error x)
+    {
+      exception_thrown = true;
+      if (report_throws) cout << x.what() << endl;
+      if (platform == "Windows" && language_id == 0x0409) // English (United States)
+        BOOST_TEST(std::strcmp(x.what(),
+          "boost::filesystem::create_directory: The system cannot find the path specified") == 0);
+    }
+    BOOST_TEST(exception_thrown);
+
+    //  catch filesystem_error by value
+
+    cout << "  catch filesystem_error by value" << endl;
+    exception_thrown = false;
+    try
+    {
+      fs::create_directory("no-such-dir/foo/bar");
+    }
+    catch (fs::filesystem_error x)
+    {
+      exception_thrown = true;
+      if (report_throws) cout << x.what() << endl;
+      if (platform == "Windows" && language_id == 0x0409) // English (United States)
+      {
+        bool ok (std::strcmp(x.what(),
+          "boost::filesystem::create_directory: The system cannot find the path specified: \"no-such-dir/foo/bar\"") == 0);
+        BOOST_TEST(ok);
+        if (!ok)
+        {
+          cout << "what returns \"" << x.what() << "\"" << endl;
+        }
+      }
+    }
+    BOOST_TEST(exception_thrown);
+
+    //  catch filesystem_error by const reference
+
+    cout << "  catch filesystem_error by const reference" << endl;
+    exception_thrown = false;
+    try
+    {
+      fs::create_directory("no-such-dir/foo/bar");
+    }
+    catch (const fs::filesystem_error& x)
+    {
+      exception_thrown = true;
+      if (report_throws) cout << x.what() << endl;
+      if (platform == "Windows" && language_id == 0x0409) // English (United States)
+      {
+        bool ok (std::strcmp(x.what(),
+          "boost::filesystem::create_directory: The system cannot find the path specified: \"no-such-dir/foo/bar\"") == 0);
+        BOOST_TEST(ok);
+        if (!ok)
+        {
+          cout << "what returns \"" << x.what() << "\"" << endl;
+        }
+      }
+    }
+    BOOST_TEST(exception_thrown);
+
+    // the bound functions should throw, so CHECK_EXCEPTION() should return true
+
+    BOOST_TEST(CHECK_EXCEPTION(bad_file_size, ENOENT));
+
+    if (platform == "Windows")
+      BOOST_TEST(CHECK_EXCEPTION(bad_directory_size, ENOENT));
+    else
+      BOOST_TEST(CHECK_EXCEPTION(bad_directory_size, 0));
+
+    // test path::exception members
+    try
+    {
+      fs::file_size(ng); // will throw
+    }
+    catch (fs::filesystem_error& ex)
+    {
+      BOOST_TEST(ex.path1().string() == " no-way, Jose");
+    }
+
+    cout << "  exception_tests complete" << endl;
+  }
+
+#if defined(BOOST_GCC) && BOOST_GCC >= 80000
+#pragma GCC diagnostic pop
+#endif
+
+  // create a directory tree that can be used by subsequent tests  ---------------------//
+  //
+  //    dir
+  //      d1
+  //        d1f1       // an empty file
+  //      f0           // an empty file
+  //      f1           // a file containing "file-f1"
+
+  void create_tree()
+  {
+    cout << "creating test directories and files in " << dir << endl;
+
+    // create directory d1
+    BOOST_TEST(!fs::create_directory(dir));
+    BOOST_TEST(!fs::is_symlink(dir));
+    BOOST_TEST(!fs::is_symlink("nosuchfileordirectory"));
+    d1 = dir / "d1";
+    BOOST_TEST(fs::create_directory(d1));
+    BOOST_TEST(fs::exists(d1));
+    BOOST_TEST(fs::is_directory(d1));
+    BOOST_TEST(fs::is_empty(d1));
+
+    // create an empty file named "d1f1"
+    d1f1 = d1 / "d1f1";
+    create_file(d1f1, "");
+    BOOST_TEST(fs::exists(d1f1));
+    BOOST_TEST(!fs::is_directory(d1f1));
+    BOOST_TEST(fs::is_regular_file(d1f1));
+    BOOST_TEST(fs::is_empty(d1f1));
+    BOOST_TEST(fs::file_size(d1f1) == 0);
+    BOOST_TEST(fs::hard_link_count(d1f1) == 1);
+
+    // create an empty file named "f0"
+    f0 = dir / "f0";
+    create_file(f0, "");
+    BOOST_TEST(fs::exists(f0));
+    BOOST_TEST(!fs::is_directory(f0));
+    BOOST_TEST(fs::is_regular_file(f0));
+    BOOST_TEST(fs::is_empty(f0));
+    BOOST_TEST(fs::file_size(f0) == 0);
+    BOOST_TEST(fs::hard_link_count(f0) == 1);
+
+    // create a file named "f1"
+    f1 = dir / "f1";
+    create_file(f1, "file-f1");
+    BOOST_TEST(fs::exists(f1));
+    BOOST_TEST(!fs::is_directory(f1));
+    BOOST_TEST(fs::is_regular_file(f1));
+    BOOST_TEST(fs::file_size(f1) == 7);
+    verify_file(f1, "file-f1");
+  }
+
+  //  directory_iterator_tests  --------------------------------------------------------//
+
+  void directory_iterator_tests()
+  {
+    cout << "directory_iterator_tests..." << endl;
+
+    bool dir_itr_exception(false);
+    try { fs::directory_iterator it(""); }
+    catch (const fs::filesystem_error &) { dir_itr_exception = true; }
+    BOOST_TEST(dir_itr_exception);
+
+    error_code ec;
+
+    BOOST_TEST(!ec);
+    fs::directory_iterator it("", ec);
+    BOOST_TEST(ec);
+
+    dir_itr_exception = false;
+    try { fs::directory_iterator itx("nosuchdirectory"); }
+    catch (const fs::filesystem_error &) { dir_itr_exception = true; }
+    BOOST_TEST(dir_itr_exception);
+
+    ec.clear();
+    fs::directory_iterator it2x("nosuchdirectory", ec);
+    BOOST_TEST(ec);
+
+    dir_itr_exception = false;
+    try
+    {
+      error_code ecx;
+      fs::directory_iterator itx("nosuchdirectory", ecx);
+      BOOST_TEST(ecx);
+      BOOST_TEST(ecx == boost::system::errc::no_such_file_or_directory);
+    }
+    catch (const fs::filesystem_error &) { dir_itr_exception = true; }
+    BOOST_TEST(!dir_itr_exception);
+
+    // create a second directory named d2
+    d2 = dir / "d2";
+    fs::create_directory(d2);
+    BOOST_TEST(fs::exists(d2));
+    BOOST_TEST(fs::is_directory(d2));
+
+    // test the basic operation of directory_iterators, and test that
+    // stepping one iterator doesn't affect a different iterator.
+    {
+      typedef std::vector<fs::directory_entry> vec_type;
+      vec_type vec;
+
+      fs::directory_iterator it1(dir);
+      BOOST_TEST(it1 != fs::directory_iterator());
+      BOOST_TEST(fs::exists(it1->status()));
+      vec.push_back(*it1);
+      BOOST_TEST(*it1 == vec[0]);
+
+      fs::directory_iterator it2(dir);
+      BOOST_TEST(it2 != fs::directory_iterator());
+      BOOST_TEST(*it1 == *it2);
+
+      ++it1;
+      BOOST_TEST(it1 != fs::directory_iterator());
+      BOOST_TEST(fs::exists(it1->status()));
+      BOOST_TEST(it1 != it2);
+      BOOST_TEST(*it1 != vec[0]);
+      BOOST_TEST(*it2 == vec[0]);
+      vec.push_back(*it1);
+
+      ++it1;
+      BOOST_TEST(it1 != fs::directory_iterator());
+      BOOST_TEST(fs::exists(it1->status()));
+      BOOST_TEST(it1 != it2);
+      BOOST_TEST(*it2 == vec[0]);
+      vec.push_back(*it1);
+
+      ++it1;
+      BOOST_TEST(it1 != fs::directory_iterator());
+      BOOST_TEST(fs::exists(it1->status()));
+      BOOST_TEST(it1 != it2);
+      BOOST_TEST(*it2 == vec[0]);
+      vec.push_back(*it1);
+
+      ++it1;
+      BOOST_TEST(it1 == fs::directory_iterator());
+
+      BOOST_TEST(*it2 == vec[0]);
+      ec.clear();
+      it2.increment(ec);
+      BOOST_TEST(!ec);
+      BOOST_TEST(it2 != fs::directory_iterator());
+      BOOST_TEST(it1 == fs::directory_iterator());
+      BOOST_TEST(*it2 == vec[1]);
+      ++it2;
+      BOOST_TEST(*it2 == vec[2]);
+      BOOST_TEST(it1 == fs::directory_iterator());
+      ++it2;
+      BOOST_TEST(*it2 == vec[3]);
+      ++it2;
+      BOOST_TEST(it1 == fs::directory_iterator());
+      BOOST_TEST(it2 == fs::directory_iterator());
+
+      // sort vec and check that the right directory entries were found
+      std::sort(vec.begin(), vec.end());
+
+      BOOST_TEST_EQ(vec[0].path().filename().string(), std::string("d1"));
+      BOOST_TEST_EQ(vec[1].path().filename().string(), std::string("d2"));
+      BOOST_TEST_EQ(vec[2].path().filename().string(), std::string("f0"));
+      BOOST_TEST_EQ(vec[3].path().filename().string(), std::string("f1"));
+    }
+
+    { // *i++ must meet the standard's InputIterator requirements
+      fs::directory_iterator dir_itr(dir);
+      BOOST_TEST(dir_itr != fs::directory_iterator());
+      fs::path p = dir_itr->path();
+      BOOST_TEST((*dir_itr++).path() == p);
+      BOOST_TEST(dir_itr != fs::directory_iterator());
+      BOOST_TEST(dir_itr->path() != p);
+
+      // test case reported in comment to SourceForge bug tracker [937606]
+      // augmented to test single pass semantics of a copied iterator [#12578]
+      fs::directory_iterator itx(dir);
+      fs::directory_iterator itx2(itx);
+      BOOST_TEST(itx == itx2);
+      const fs::path p1 = (*itx++).path();
+      BOOST_TEST(itx == itx2);
+      BOOST_TEST(itx != fs::directory_iterator());
+      const fs::path p2 = (*itx++).path();
+      BOOST_TEST(itx == itx2);
+      BOOST_TEST(p1 != p2);
+      ++itx;
+      BOOST_TEST(itx == itx2);
+      ++itx;
+      BOOST_TEST(itx == itx2);
+      BOOST_TEST(itx == fs::directory_iterator());
+      BOOST_TEST(itx2 == fs::directory_iterator());
+    }
+
+    //  Windows has a tricky special case when just the root-name is given,
+    //  causing the rest of the path to default to the current directory.
+    //  Reported as S/F bug [ 1259176 ]
+    if (platform == "Windows")
+    {
+      fs::path root_name_path(fs::current_path().root_name());
+      fs::directory_iterator itx(root_name_path);
+      BOOST_TEST(itx != fs::directory_iterator());
+//      BOOST_TEST(fs::exists((*itx).path()));
+      BOOST_TEST(fs::exists(itx->path()));
+      BOOST_TEST(itx->path().parent_path() == root_name_path);
+      bool found(false);
+      do
+      {
+        if (itx->path().filename() == temp_dir.filename())
+          found = true;
+      } while (++itx != fs::directory_iterator());
+      BOOST_TEST(found);
+    }
+
+    // there was an inital bug in directory_iterator that caused premature
+    // close of an OS handle. This block will detect regression.
+    {
+      fs::directory_iterator di;
+      {
+        di = fs::directory_iterator(dir);
+      }
+      BOOST_TEST(++di != fs::directory_iterator());
+    }
+
+    cout << "  directory_iterator_tests complete" << endl;
+  }
+
+  //  recursive_directory_iterator_tests  ----------------------------------------------//
+
+  int walk_tree(bool recursive)
+  {
+    //cout << "    walk_tree" << endl;
+    error_code ec;
+    int d1f1_count = 0;
+    for (fs::recursive_directory_iterator it (dir,
+      recursive ? (fs::directory_options::follow_directory_symlink | fs::directory_options::skip_dangling_symlinks) : fs::directory_options::none);
+         it != fs::recursive_directory_iterator();
+         it.increment(ec))
+    {
+      //cout << "      " << it->path() << " : " << ec << endl;
+      if (it->path().filename() == "d1f1")
+        ++d1f1_count;
+    }
+    //cout << "      last error : " << ec << endl;
+    return d1f1_count;
+  }
+
+  void recursive_directory_iterator_tests()
+  {
+    cout << "recursive_directory_iterator_tests..." << endl;
+    BOOST_TEST_EQ(walk_tree(false), 1);
+    if (create_symlink_ok)
+      BOOST_TEST(walk_tree(true) > 1);
+
+    //  test iterator increment with error_code argument
+    cout << "  with error_code argument" << endl;
+    boost::system::error_code ec;
+    int d1f1_count = 0;
+    fs::recursive_directory_iterator it(dir, fs::directory_options::none);
+    fs::recursive_directory_iterator it2(it);  // test single pass shallow copy semantics
+    for (;
+         it != fs::recursive_directory_iterator();
+         it.increment(ec))
+    {
+      if (it->path().filename() == "d1f1")
+        ++d1f1_count;
+      BOOST_TEST(it == it2);  // verify single pass shallow copy semantics
+    }
+    BOOST_TEST(!ec);
+    BOOST_TEST_EQ(d1f1_count, 1);
+    BOOST_TEST(it == it2);  // verify single pass shallow copy semantics
+
+    cout << "  recursive_directory_iterator_tests complete" << endl;
+  }
+
+  //  iterator_status_tests  -----------------------------------------------------------//
+
+  void iterator_status_tests()
+  {
+    cout << "iterator_status_tests..." << endl;
+
+    error_code ec;
+    // harmless if these fail:
+    fs::create_symlink(dir/"f0", dir/"f0_symlink", ec);
+    fs::create_symlink(dir/"no such file", dir/"dangling_symlink", ec);
+    fs::create_directory_symlink(dir/"d1", dir/"d1_symlink", ec);
+    fs::create_directory_symlink(dir/"no such directory",
+      dir/"dangling_directory_symlink", ec);
+
+    for (fs::directory_iterator it(dir);
+          it != fs::directory_iterator(); ++it)
+    {
+      BOOST_TEST(fs::status(it->path()).type() == it->status().type());
+      BOOST_TEST(fs::symlink_status(it->path()).type() == it->symlink_status().type());
+      if (it->path().filename() == "d1")
+      {
+        BOOST_TEST(fs::is_directory(it->status()));
+        BOOST_TEST(fs::is_directory(it->symlink_status()));
+      }
+      else if (it->path().filename() == "d2")
+      {
+        BOOST_TEST(fs::is_directory(it->status()));
+        BOOST_TEST(fs::is_directory(it->symlink_status()));
+      }
+      else if (it->path().filename() == "f0")
+      {
+        BOOST_TEST(fs::is_regular_file(it->status()));
+        BOOST_TEST(fs::is_regular_file(it->symlink_status()));
+      }
+      else if (it->path().filename() == "f1")
+      {
+        BOOST_TEST(fs::is_regular_file(it->status()));
+        BOOST_TEST(fs::is_regular_file(it->symlink_status()));
+      }
+      else if (it->path().filename() == "f0_symlink")
+      {
+        BOOST_TEST(fs::is_regular_file(it->status()));
+        BOOST_TEST(fs::is_symlink(it->symlink_status()));
+      }
+      else if (it->path().filename() == "dangling_symlink")
+      {
+        BOOST_TEST(it->status().type() == fs::file_not_found);
+        BOOST_TEST(fs::is_symlink(it->symlink_status()));
+      }
+      else if (it->path().filename() == "d1_symlink")
+      {
+        BOOST_TEST(fs::is_directory(it->status()));
+        BOOST_TEST(fs::is_symlink(it->symlink_status()));
+      }
+      else if (it->path().filename() == "dangling_directory_symlink")
+      {
+        BOOST_TEST(it->status().type() == fs::file_not_found);
+        BOOST_TEST(fs::is_symlink(it->symlink_status()));
+      }
+      //else
+      //  cout << "    Note: unexpected directory entry " << it->path().filename() << endl;
+    }
+  }
+
+  //  recursive_iterator_status_tests  -------------------------------------------------//
+
+  void recursive_iterator_status_tests()
+  {
+    cout << "recursive_iterator_status_tests..." << endl;
+    for (fs::recursive_directory_iterator it (dir);
+         it != fs::recursive_directory_iterator();
+         ++it)
+    {
+      BOOST_TEST(fs::status(it->path()).type() == it->status().type());
+      BOOST_TEST(fs::symlink_status(it->path()).type() == it->symlink_status().type());
+    }
+  }
+
+  //  create_hard_link_tests  ----------------------------------------------------------//
+
+  void create_hard_link_tests()
+  {
+    cout << "create_hard_link_tests..." << endl;
+
+    fs::path from_ph(dir / "f3");
+    fs::path f1x(dir / "f1");
+
+    BOOST_TEST(!fs::exists(from_ph));
+    BOOST_TEST(fs::exists(f1x));
+    bool create_hard_link_ok(true);
+    try { fs::create_hard_link(f1x, from_ph); }
+    catch (const fs::filesystem_error & ex)
+    {
+      create_hard_link_ok = false;
+      cout
+        << "     *** For information only ***\n"
+           "     create_hard_link() attempt failed\n"
+           "     filesystem_error.what() reports: " << ex.what() << "\n"
+           "     create_hard_link() may not be supported on this file system\n";
+    }
+
+    if (create_hard_link_ok)
+    {
+      cout
+        << "     *** For information only ***\n"
+           "     create_hard_link() succeeded\n";
+      BOOST_TEST(fs::exists(from_ph));
+      BOOST_TEST(fs::exists(f1x));
+      BOOST_TEST(fs::equivalent(from_ph, f1x));
+      BOOST_TEST(fs::hard_link_count(from_ph) == 2);
+      BOOST_TEST(fs::hard_link_count(f1x) == 2);
+    }
+
+    //  Although tests may be running on a FAT or other file system that does
+    //  not support hard links, that is unusual enough that it is considered
+    //  a test failure.
+    BOOST_TEST(create_hard_link_ok);
+
+    error_code ec;
+    fs::create_hard_link(fs::path("doesnotexist"),
+      fs::path("shouldnotwork"), ec);
+    BOOST_TEST(ec);
+  }
+
+  //  create_symlink_tests  ------------------------------------------------------------//
+
+  void create_symlink_tests()
+  {
+    cout << "create_symlink_tests..." << endl;
+
+    fs::path from_ph(dir / "f4");
+    fs::path f1x(dir / "f1");
+    BOOST_TEST(!fs::exists(from_ph));
+    BOOST_TEST(fs::exists(f1x));
+    try { fs::create_symlink(f1x, from_ph); }
+    catch (const fs::filesystem_error & ex)
+    {
+      create_symlink_ok = false;
+      cout
+        << "     *** For information only ***\n"
+           "     create_symlink() attempt failed\n"
+           "     filesystem_error.what() reports: " << ex.what() << "\n"
+           "     create_symlink() may not be supported on this operating system or file system\n";
+    }
+
+    if (create_symlink_ok)
+    {
+      cout
+        << "     *** For information only ***\n"
+           "     create_symlink() succeeded\n";
+      BOOST_TEST(fs::exists(from_ph));
+      BOOST_TEST(fs::is_symlink(from_ph));
+      BOOST_TEST(fs::exists(f1x));
+      BOOST_TEST(fs::equivalent(from_ph, f1x));
+      BOOST_TEST(fs::read_symlink(from_ph) == f1x);
+
+      fs::file_status stat = fs::symlink_status(from_ph);
+      BOOST_TEST(fs::exists(stat));
+      BOOST_TEST(!fs::is_directory(stat));
+      BOOST_TEST(!fs::is_regular_file(stat));
+      BOOST_TEST(!fs::is_other(stat));
+      BOOST_TEST(fs::is_symlink(stat));
+
+      stat = fs::status(from_ph);
+      BOOST_TEST(fs::exists(stat));
+      BOOST_TEST(!fs::is_directory(stat));
+      BOOST_TEST(fs::is_regular_file(stat));
+      BOOST_TEST(!fs::is_other(stat));
+      BOOST_TEST(!fs::is_symlink(stat));
+
+      // since create_symlink worked, copy_symlink should also work
+      fs::path symlink2_ph(dir / "symlink2");
+      fs::copy_symlink(from_ph, symlink2_ph);
+      stat = fs::symlink_status(symlink2_ph);
+      BOOST_TEST(fs::is_symlink(stat));
+      BOOST_TEST(fs::exists(stat));
+      BOOST_TEST(!fs::is_directory(stat));
+      BOOST_TEST(!fs::is_regular_file(stat));
+      BOOST_TEST(!fs::is_other(stat));
+    }
+
+    error_code ec = error_code();
+    fs::create_symlink("doesnotexist", "", ec);
+    BOOST_TEST(ec);
+  }
+
+  //  permissions_tests  ---------------------------------------------------------------//
+
+  void permissions_tests()
+  {
+    cout << "permissions_tests..." << endl;
+
+    fs::path p(dir / "permissions.txt");
+    create_file(p);
+
+    if (platform == "POSIX")
+    {
+      cout << "  fs::status(p).permissions() " << std::oct << fs::status(p).permissions()
+        << std::dec << endl;
+      BOOST_TEST((fs::status(p).permissions() & 0600) == 0600);  // 0644, 0664 sometimes returned
+
+      fs::permissions(p, fs::owner_all);
+      BOOST_TEST(fs::status(p).permissions() == fs::owner_all);
+
+      fs::permissions(p, fs::add_perms | fs::group_all);
+      BOOST_TEST(fs::status(p).permissions() == (fs::owner_all | fs::group_all));
+
+      fs::permissions(p, fs::remove_perms | fs::group_all);
+      BOOST_TEST(fs::status(p).permissions() == fs::owner_all);
+
+      // some POSIX platforms cache permissions during directory iteration, some don't
+      // so test that iteration finds the correct permissions
+      for (fs::directory_iterator itr(dir); itr != fs::directory_iterator(); ++itr)
+        if (itr->path().filename() == fs::path("permissions.txt"))
+          BOOST_TEST(itr->status().permissions() == fs::owner_all);
+
+      if (create_symlink_ok)  // only if symlinks supported
+      {
+        BOOST_TEST(fs::status(p).permissions() == fs::owner_all);
+        fs::path p2(dir / "permissions-symlink.txt");
+        fs::create_symlink(p, p2);
+        cout << std::oct;
+        cout << "   status(p).permissions() "  << fs::status(p).permissions() << endl;
+        cout << "  status(p2).permissions() "  << fs::status(p).permissions() << endl;
+        fs::permissions(p2, fs::add_perms | fs::others_read);
+        cout << "   status(p).permissions(): " << fs::status(p).permissions() << endl;
+        cout << "  status(p2).permissions(): " << fs::status(p2).permissions() << endl;
+        cout << std::dec;
+      }
+
+    }
+    else // Windows
+    {
+      BOOST_TEST(fs::status(p).permissions() == 0666);
+      fs::permissions(p, fs::remove_perms | fs::group_write);
+      BOOST_TEST(fs::status(p).permissions() == 0444);
+      fs::permissions(p, fs::add_perms | fs::group_write);
+      BOOST_TEST(fs::status(p).permissions() == 0666);
+    }
+  }
+
+  //  rename_tests  --------------------------------------------------------------------//
+
+  void rename_tests()
+  {
+    cout << "rename_tests..." << endl;
+
+    fs::path f1x(dir / "f1");
+    BOOST_TEST(fs::exists(f1x));
+
+    // error: rename a non-existent old file
+    BOOST_TEST(!fs::exists(d1 / "f99"));
+    BOOST_TEST(!fs::exists(d1 / "f98"));
+    renamer n1a(d1 / "f99", d1 / "f98");
+    BOOST_TEST(CHECK_EXCEPTION(n1a, ENOENT));
+    renamer n1b(fs::path(""), d1 / "f98");
+    BOOST_TEST(CHECK_EXCEPTION(n1b, ENOENT));
+
+    // error: rename an existing file to ""
+    renamer n2(f1x, "");
+    BOOST_TEST(CHECK_EXCEPTION(n2, ENOENT));
+
+    // rename an existing file to an existent file
+    create_file(dir / "ff1", "ff1");
+    create_file(dir / "ff2", "ff2");
+    fs::rename(dir / "ff2", dir / "ff1");
+    BOOST_TEST(fs::exists(dir / "ff1"));
+    verify_file(dir / "ff1", "ff2");
+    BOOST_TEST(!fs::exists(dir / "ff2"));
+
+    // rename an existing file to itself
+    BOOST_TEST(fs::exists(dir / "f1"));
+    fs::rename(dir / "f1", dir / "f1");
+    BOOST_TEST(fs::exists(dir / "f1"));
+
+    // error: rename an existing directory to an existing non-empty directory
+    BOOST_TEST(fs::exists(dir / "f1"));
+    BOOST_TEST(fs::exists(d1 / "f2"));
+    // several POSIX implementations (cygwin, openBSD) report ENOENT instead of EEXIST,
+    // so we don't verify error type on the following test.
+    renamer n3b(dir, d1);
+    BOOST_TEST(CHECK_EXCEPTION(n3b, 0));
+
+    //  error: move existing file to a nonexistent parent directory
+    BOOST_TEST(!fs::is_directory(dir / "f1"));
+    BOOST_TEST(!fs::exists(dir / "d3/f3"));
+    renamer n4a(dir / "f1", dir / "d3/f3");
+    BOOST_TEST(CHECK_EXCEPTION(n4a, ENOENT));
+
+    // rename existing file in same directory
+    BOOST_TEST(fs::exists(d1 / "f2"));
+    BOOST_TEST(!fs::exists(d1 / "f50"));
+    fs::rename(d1 / "f2", d1 / "f50");
+    BOOST_TEST(!fs::exists(d1 / "f2"));
+    BOOST_TEST(fs::exists(d1 / "f50"));
+    fs::rename(d1 / "f50", d1 / "f2");
+    BOOST_TEST(fs::exists(d1 / "f2"));
+    BOOST_TEST(!fs::exists(d1 / "f50"));
+
+    // move and rename an existing file to a different directory
+    fs::rename(d1 / "f2", d2 / "f3");
+    BOOST_TEST(!fs::exists(d1 / "f2"));
+    BOOST_TEST(!fs::exists(d2 / "f2"));
+    BOOST_TEST(fs::exists(d2 / "f3"));
+    BOOST_TEST(!fs::is_directory(d2 / "f3"));
+    verify_file(d2 / "f3", "file-f1");
+    fs::rename(d2 / "f3", d1 / "f2");
+    BOOST_TEST(fs::exists(d1 / "f2"));
+
+    // error: move existing directory to nonexistent parent directory
+    BOOST_TEST(fs::exists(d1));
+    BOOST_TEST(!fs::exists(dir / "d3/d5"));
+    BOOST_TEST(!fs::exists(dir / "d3"));
+    renamer n5a(d1, dir / "d3/d5");
+    BOOST_TEST(CHECK_EXCEPTION(n5a, ENOENT));
+
+    // rename existing directory
+    fs::path d3(dir / "d3");
+    BOOST_TEST(fs::exists(d1));
+    BOOST_TEST(fs::exists(d1 / "f2"));
+    BOOST_TEST(!fs::exists(d3));
+    fs::rename(d1, d3);
+    BOOST_TEST(!fs::exists(d1));
+    BOOST_TEST(fs::exists(d3));
+    BOOST_TEST(fs::is_directory(d3));
+    BOOST_TEST(!fs::exists(d1 / "f2"));
+    BOOST_TEST(fs::exists(d3 / "f2"));
+    fs::rename(d3, d1);
+    BOOST_TEST(fs::exists(d1));
+    BOOST_TEST(fs::exists(d1 / "f2"));
+    BOOST_TEST(!fs::exists(d3));
+
+    // rename and move d1 to d2 / "d20"
+    BOOST_TEST(fs::exists(d1));
+    BOOST_TEST(!fs::exists(d2 / "d20"));
+    BOOST_TEST(fs::exists(d1 / "f2"));
+    fs::rename(d1, d2 / "d20");
+    BOOST_TEST(!fs::exists(d1));
+    BOOST_TEST(fs::exists(d2 / "d20"));
+    BOOST_TEST(fs::exists(d2 / "d20" / "f2"));
+    fs::rename(d2 / "d20", d1);
+    BOOST_TEST(fs::exists(d1));
+    BOOST_TEST(!fs::exists(d2 / "d20"));
+    BOOST_TEST(fs::exists(d1 / "f2"));
+  }
+
+  //  predicate_and_status_tests  ------------------------------------------------------//
+
+  void predicate_and_status_tests()
+  {
+    cout << "predicate_and_status_tests..." << endl;
+
+    BOOST_TEST(!fs::exists(ng));
+    BOOST_TEST(!fs::is_directory(ng));
+    BOOST_TEST(!fs::is_regular_file(ng));
+    BOOST_TEST(!fs::is_symlink(ng));
+    fs::file_status stat(fs::status(ng));
+    BOOST_TEST(fs::type_present(stat));
+    BOOST_TEST(fs::permissions_present(stat));
+    BOOST_TEST(fs::status_known(stat));
+    BOOST_TEST(!fs::exists(stat));
+    BOOST_TEST(!fs::is_directory(stat));
+    BOOST_TEST(!fs::is_regular_file(stat));
+    BOOST_TEST(!fs::is_other(stat));
+    BOOST_TEST(!fs::is_symlink(stat));
+    stat = fs::status("");
+    BOOST_TEST(fs::type_present(stat));
+    BOOST_TEST(fs::permissions_present(stat));
+    BOOST_TEST(fs::status_known(stat));
+    BOOST_TEST(!fs::exists(stat));
+    BOOST_TEST(!fs::is_directory(stat));
+    BOOST_TEST(!fs::is_regular_file(stat));
+    BOOST_TEST(!fs::is_other(stat));
+    BOOST_TEST(!fs::is_symlink(stat));
+  }
+
+  //  create_directory_tests  ----------------------------------------------------------//
+
+  void create_directory_tests()
+  {
+    cout << "create_directory_tests..." << endl;
+
+    error_code ec;
+    BOOST_TEST(!fs::create_directory("", ec));
+    BOOST_TEST(ec);
+
+#ifdef BOOST_WINDOWS_API
+    ec.clear();
+    BOOST_TEST(!fs::create_directory(" ", ec));  // OK on Linux
+    BOOST_TEST(ec);
+#endif
+
+    ec.clear();
+    BOOST_TEST(!fs::create_directory("/", ec));
+    BOOST_TEST(!ec);
+    BOOST_TEST(fs::is_directory("/"));  // this is a post-condition
+
+    ec.clear();
+    BOOST_TEST(!fs::create_directory(".", ec));
+    BOOST_TEST(!ec);
+
+    ec.clear();
+    BOOST_TEST(!fs::create_directory("..", ec));
+    BOOST_TEST(!ec);
+
+    // create a directory, then check it for consistency
+    //   take extra care to report problems, since if this fails
+    //   many subsequent tests will fail
+    try
+    {
+      fs::create_directory(dir);
+    }
+
+    catch (const fs::filesystem_error & x)
+    {
+      cout << x.what() << "\n\n"
+         "***** Creating directory " << dir << " failed.   *****\n"
+         "***** This is a serious error that will prevent further tests    *****\n"
+         "***** from returning useful results. Further testing is aborted. *****\n\n";
+      std::exit(1);
+    }
+
+    catch (...)
+    {
+      cout << "\n\n"
+         "***** Creating directory " << dir << " failed.   *****\n"
+         "***** This is a serious error that will prevent further tests    *****\n"
+         "***** from returning useful results. Further testing is aborted. *****\n\n";
+      std::exit(1);
+    }
+
+    BOOST_TEST(fs::exists(dir));
+    BOOST_TEST(fs::is_empty(dir));
+    BOOST_TEST(fs::is_directory(dir));
+    BOOST_TEST(!fs::is_regular_file(dir));
+    BOOST_TEST(!fs::is_other(dir));
+    BOOST_TEST(!fs::is_symlink(dir));
+    fs::file_status stat = fs::status(dir);
+    BOOST_TEST(fs::exists(stat));
+    BOOST_TEST(fs::is_directory(stat));
+    BOOST_TEST(!fs::is_regular_file(stat));
+    BOOST_TEST(!fs::is_other(stat));
+    BOOST_TEST(!fs::is_symlink(stat));
+
+    cout << "  create_directory_tests complete" << endl;
+  }
+
+  //  current_directory_tests  ---------------------------------------------------------//
+
+  void current_directory_tests()
+  {
+    cout << "current_directory_tests..." << endl;
+
+    // set the current directory, then check it for consistency
+    fs::path original_dir = fs::current_path();
+    BOOST_TEST(dir != original_dir);
+    fs::current_path(dir);
+    BOOST_TEST(fs::current_path() == dir);
+    BOOST_TEST(fs::current_path() != original_dir);
+    fs::current_path(original_dir);
+    BOOST_TEST(fs::current_path() == original_dir);
+    BOOST_TEST(fs::current_path() != dir);
+
+    // make sure the overloads work
+    fs::current_path(dir.c_str());
+    BOOST_TEST(fs::current_path() == dir);
+    BOOST_TEST(fs::current_path() != original_dir);
+    fs::current_path(original_dir.string());
+    BOOST_TEST(fs::current_path() == original_dir);
+    BOOST_TEST(fs::current_path() != dir);
+  }
+
+  //  create_directories_tests  --------------------------------------------------------//
+
+  void create_directories_tests()
+  {
+    cout << "create_directories_tests..." << endl;
+
+    error_code ec;
+    BOOST_TEST(!fs::create_directories("", ec));
+    BOOST_TEST(ec);
+
+#ifdef BOOST_WINDOWS_API
+    // Windows only test, since " " is OK on Linux as a directory name
+    ec.clear();
+    BOOST_TEST(!fs::create_directories(" ", ec));
+    BOOST_TEST(ec);
+#endif
+
+    ec.clear();
+    BOOST_TEST(!fs::create_directories("/", ec));
+    BOOST_TEST(!ec);
+
+    ec.clear();
+    BOOST_TEST(!fs::create_directories(".", ec));
+    BOOST_TEST(ec);
+
+    ec.clear();
+    BOOST_TEST(!fs::create_directories("..", ec));
+    BOOST_TEST(ec);
+
+#ifdef BOOST_POSIX_API
+    ec.clear();
+    BOOST_TEST(!fs::create_directories("/foo", ec));  // may be OK on Windows
+                                                      //  but unlikely to be OK on POSIX
+    BOOST_TEST(ec);
+#endif
+
+    fs::path p = dir / "level1/." / "level2/./.." / "level3/";
+    // trailing "/.", "/./..", and "/" in the above elements test ticket #7258 and
+    // related issues
+
+    cout << "    p is " << p << endl;
+    BOOST_TEST(!fs::exists(p));
+    BOOST_TEST(fs::create_directories(p));
+    BOOST_TEST(fs::exists(p));
+    BOOST_TEST(fs::is_directory(p));
+
+    if (fs::exists("/permissions_test"))
+    {
+      BOOST_TEST(!fs::create_directories("/permissions_test", ec));
+      BOOST_TEST(!fs::create_directories("/permissions_test/another_directory", ec));
+      BOOST_TEST(ec);
+    }
+  }
+
+  //  resize_file_tests  ---------------------------------------------------------------//
+
+  void resize_file_tests()
+  {
+    cout << "resize_file_tests..." << endl;
+
+    fs::path p(dir / "resize_file_test.txt");
+
+    fs::remove(p);
+    create_file(p, "1234567890");
+
+    BOOST_TEST(fs::exists(p));
+    BOOST_TEST_EQ(fs::file_size(p), 10U);
+    fs::resize_file(p, 5);
+    BOOST_TEST(fs::exists(p));
+    BOOST_TEST_EQ(fs::file_size(p), 5U);
+    fs::resize_file(p, 15);
+    BOOST_TEST(fs::exists(p));
+    BOOST_TEST_EQ(fs::file_size(p), 15U);
+
+    error_code ec;
+    fs::resize_file("no such file", 15, ec);
+    BOOST_TEST(ec);
+  }
+
+  //  status_of_nonexistent_tests  -----------------------------------------------------//
+
+  void status_of_nonexistent_tests()
+  {
+    cout << "status_of_nonexistent_tests..." << endl;
+    fs::path p ("nosuch");
+    BOOST_TEST(!fs::exists(p));
+    BOOST_TEST(!fs::is_regular_file(p));
+    BOOST_TEST(!fs::is_directory(p));
+    BOOST_TEST(!fs::is_symlink(p));
+    BOOST_TEST(!fs::is_other(p));
+
+    fs::file_status s = fs::status(p);
+    BOOST_TEST(!fs::exists(s));
+    BOOST_TEST_EQ(s.type(), fs::file_not_found);
+    BOOST_TEST(fs::type_present(s));
+    BOOST_TEST(!fs::is_regular_file(s));
+    BOOST_TEST(!fs::is_directory(s));
+    BOOST_TEST(!fs::is_symlink(s));
+    BOOST_TEST(!fs::is_other(s));
+
+    // ticket #12574 was just user confusion, but are the tests are worth keeping
+    error_code ec;
+    BOOST_TEST(!fs::is_directory(dir / "no-such-directory", ec));
+    BOOST_TEST(ec);
+    //cout << "error_code value: " << ec.value() << endl;
+    ec.clear();
+    BOOST_TEST(!fs::is_directory(dir / "no-such-directory" / "bar", ec));
+    BOOST_TEST(ec);
+    //cout << "error_code value: " << ec.value() << endl;
+  }
+
+  //  status_error_reporting_tests  ----------------------------------------------------//
+
+  void status_error_reporting_tests()
+  {
+    cout << "status_error_reporting_tests..." << endl;
+
+    error_code ec;
+
+    // test status, ec, for existing file
+    ec.assign(-1,poison_category());
+    BOOST_TEST(ec.value() == -1);
+    BOOST_TEST(&ec.category() == &poison_category());
+    fs::file_status s = fs::status(".",ec);
+    BOOST_TEST(ec.value() == 0);
+    BOOST_TEST(ec.category() == system_category());
+    BOOST_TEST(fs::exists(s));
+    BOOST_TEST(fs::is_directory(s));
+
+    // test status, ec, for non-existing file
+    fs::path p ("nosuch");
+    ec.assign(-1,poison_category());
+    s = fs::status(p,ec);
+    BOOST_TEST(ec.value() != 0);
+    BOOST_TEST(ec.category() == system_category());
+
+    BOOST_TEST(!fs::exists(s));
+    BOOST_TEST_EQ(s.type(), fs::file_not_found);
+    BOOST_TEST(fs::type_present(s));
+    BOOST_TEST(!fs::is_regular_file(s));
+    BOOST_TEST(!fs::is_directory(s));
+    BOOST_TEST(!fs::is_symlink(s));
+    BOOST_TEST(!fs::is_other(s));
+
+    // test queries, ec, for existing file
+    ec.assign(-1,poison_category());
+    BOOST_TEST(fs::exists(".", ec));
+    BOOST_TEST(ec.value() == 0);
+    BOOST_TEST(ec.category() == system_category());
+    ec.assign(-1,poison_category());
+    BOOST_TEST(!fs::is_regular_file(".", ec));
+    BOOST_TEST(ec.value() == 0);
+    BOOST_TEST(ec.category() == system_category());
+    ec.assign(-1,poison_category());
+    BOOST_TEST(fs::is_directory(".", ec));
+    BOOST_TEST(ec.value() == 0);
+    BOOST_TEST(ec.category() == system_category());
+
+    // test queries, ec, for non-existing file
+    ec.assign(-1,poison_category());
+    BOOST_TEST(!fs::exists(p, ec));
+    BOOST_TEST(ec.value() != 0);
+    BOOST_TEST(ec.category() == system_category());
+    ec.assign(-1,poison_category());
+    BOOST_TEST(!fs::is_regular_file(p, ec));
+    BOOST_TEST(ec.value() != 0);
+    BOOST_TEST(ec.category() == system_category());
+    ec.assign(-1,poison_category());
+    BOOST_TEST(!fs::is_directory(p, ec));
+    BOOST_TEST(ec.value() != 0);
+    BOOST_TEST(ec.category() == system_category());
+  }
+
+  //  remove_tests  --------------------------------------------------------------------//
+
+  void remove_tests(const fs::path& dirx)
+  {
+    cout << "remove_tests..." << endl;
+
+    // remove() file
+    fs::path f1x = dirx / "shortlife";
+    BOOST_TEST(!fs::exists(f1x));
+    create_file(f1x, "");
+    BOOST_TEST(fs::exists(f1x));
+    BOOST_TEST(!fs::is_directory(f1x));
+    BOOST_TEST(fs::remove(f1x));
+    BOOST_TEST(!fs::exists(f1x));
+    BOOST_TEST(!fs::remove("no-such-file"));
+    BOOST_TEST(!fs::remove("no-such-directory/no-such-file"));
+
+    // remove() directory
+    fs::path d1x = dirx / "shortlife_dir";
+    BOOST_TEST(!fs::exists(d1x));
+    fs::create_directory(d1x);
+    BOOST_TEST(fs::exists(d1x));
+    BOOST_TEST(fs::is_directory(d1x));
+    BOOST_TEST(fs::is_empty(d1x));
+    bad_remove_dir = dirx;
+    BOOST_TEST(CHECK_EXCEPTION(bad_remove, ENOTEMPTY));
+    BOOST_TEST(fs::remove(d1x));
+    BOOST_TEST(!fs::exists(d1x));
+  }
+
+  //  remove_symlink_tests  ------------------------------------------------------------//
+
+  void remove_symlink_tests()
+  {
+    cout << "remove_symlink_tests..." << endl;
+
+    // remove() dangling symbolic link
+    fs::path link("dangling_link");
+    fs::remove(link);  // remove any residue from past tests
+    BOOST_TEST(!fs::is_symlink(link));
+    BOOST_TEST(!fs::exists(link));
+    fs::create_symlink("nowhere", link);
+    BOOST_TEST(!fs::exists(link));
+    BOOST_TEST(fs::is_symlink(link));
+    BOOST_TEST(fs::remove(link));
+    BOOST_TEST(!fs::is_symlink(link));
+
+    // remove() self-refering symbolic link
+    link = "link_to_self";
+    fs::remove(link);  // remove any residue from past tests
+    BOOST_TEST(!fs::is_symlink(link));
+    BOOST_TEST(!fs::exists(link));
+    fs::create_symlink(link, link);
+    BOOST_TEST(fs::remove(link));
+    BOOST_TEST(!fs::exists(link));
+    BOOST_TEST(!fs::is_symlink(link));
+
+    // remove() cyclic symbolic link
+    link = "link_to_a";
+    fs::path link2("link_to_b");
+    fs::remove(link);   // remove any residue from past tests
+    fs::remove(link2);  // remove any residue from past tests
+    BOOST_TEST(!fs::is_symlink(link));
+    BOOST_TEST(!fs::exists(link));
+    fs::create_symlink(link, link2);
+    fs::create_symlink(link2, link);
+    BOOST_TEST(fs::remove(link));
+    BOOST_TEST(fs::remove(link2));
+    BOOST_TEST(!fs::exists(link));
+    BOOST_TEST(!fs::exists(link2));
+    BOOST_TEST(!fs::is_symlink(link));
+
+    // remove() symbolic link to file
+    fs::path f1x = "link_target";
+    fs::remove(f1x);  // remove any residue from past tests
+    BOOST_TEST(!fs::exists(f1x));
+    create_file(f1x, "");
+    BOOST_TEST(fs::exists(f1x));
+    BOOST_TEST(!fs::is_directory(f1x));
+    BOOST_TEST(fs::is_regular_file(f1x));
+    link = "non_dangling_link";
+    fs::create_symlink(f1x, link);
+    BOOST_TEST(fs::exists(link));
+    BOOST_TEST(!fs::is_directory(link));
+    BOOST_TEST(fs::is_regular_file(link));
+    BOOST_TEST(fs::is_symlink(link));
+    BOOST_TEST(fs::remove(link));
+    BOOST_TEST(fs::exists(f1x));
+    BOOST_TEST(!fs::exists(link));
+    BOOST_TEST(!fs::is_symlink(link));
+    BOOST_TEST(fs::remove(f1x));
+    BOOST_TEST(!fs::exists(f1x));
+  }
+
+  //  absolute_tests  -----------------------------------------------------------------//
+
+  void absolute_tests()
+  {
+    cout << "absolute_tests..." << endl;
+
+    BOOST_TEST_EQ(fs::absolute(""), fs::current_path() );
+    BOOST_TEST_EQ(fs::absolute("", ""), fs::current_path() );
+    BOOST_TEST_EQ(fs::absolute(fs::current_path() / "foo/bar"), fs::current_path() / "foo/bar");
+    BOOST_TEST_EQ(fs::absolute("foo"), fs::current_path() / "foo");
+    BOOST_TEST_EQ(fs::absolute("foo", fs::current_path()), fs::current_path() / "foo");
+    BOOST_TEST_EQ(fs::absolute("bar", "foo"), fs::current_path() / "foo" / "bar");
+    BOOST_TEST_EQ(fs::absolute("/foo"), fs::current_path().root_path().string() + "foo");
+
+#  ifdef BOOST_WINDOWS_API
+    BOOST_TEST_EQ(fs::absolute("a:foo", "b:/bar"), "a:/bar/foo");
+#  endif
+
+    // these tests were moved from elsewhere, so may duplicate some of the above tests
+
+    // p.empty()
+      BOOST_TEST_EQ(fs::absolute(fs::path(), "//foo/bar"), "//foo/bar");
+      if (platform == "Windows")
+      {
+        BOOST_TEST_EQ(fs::absolute(fs::path(), "a:/bar"), "a:/bar");
+      }
+
+    // p.has_root_name()
+      //   p.has_root_directory()
+        BOOST_TEST_EQ(fs::absolute(fs::path("//foo/bar"), "//uvw/xyz"), "//foo/bar");
+        if (platform == "Windows")
+        {
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:/bar"), "b:/xyz"), "a:/bar");
+        }
+      //   !p.has_root_directory()
+        BOOST_TEST_EQ(fs::absolute(fs::path("//net"), "//xyz/"), "//net/");
+        BOOST_TEST_EQ(fs::absolute(fs::path("//net"), "//xyz/abc"), "//net/abc");
+        BOOST_TEST_EQ(fs::absolute(fs::path("//net"), "//xyz/abc/def"), "//net/abc/def");
+        if (platform == "Windows")
+        {
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:"), "b:/"), "a:/");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:"),"b:/abc"), "a:/abc");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:"),"b:/abc/def"), "a:/abc/def");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:foo"), "b:/"), "a:/foo");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:foo"), "b:/abc"), "a:/abc/foo");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:foo"), "b:/abc/def"), "a:/abc/def/foo");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:foo/bar"), "b:/"), "a:/foo/bar");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:foo/bar"), "b:/abc"), "a:/abc/foo/bar");
+          BOOST_TEST_EQ(fs::absolute(fs::path("a:foo/bar"), "b:/abc/def"), "a:/abc/def/foo/bar");
+        }
+    // !p.has_root_name()
+      //   p.has_root_directory()
+        BOOST_TEST_EQ(fs::absolute(fs::path("/"), "//xyz/"), "//xyz/");
+        BOOST_TEST_EQ(fs::absolute(fs::path("/"), "//xyz/abc"), "//xyz/");
+        BOOST_TEST_EQ(fs::absolute(fs::path("/foo"), "//xyz/"), "//xyz/foo");
+        BOOST_TEST_EQ(fs::absolute(fs::path("/foo"), "//xyz/abc"), "//xyz/foo");
+      //   !p.has_root_directory()
+        BOOST_TEST_EQ(fs::absolute(fs::path("foo"), "//xyz/abc"), "//xyz/abc/foo");
+        BOOST_TEST_EQ(fs::absolute(fs::path("foo/bar"), "//xyz/abc"), "//xyz/abc/foo/bar");
+        BOOST_TEST_EQ(fs::absolute(fs::path("."), "//xyz/abc"), "//xyz/abc/.");
+        BOOST_TEST_EQ(fs::absolute(fs::path(".."), "//xyz/abc"), "//xyz/abc/..");
+        BOOST_TEST_EQ(fs::absolute(fs::path("./foo"), "//xyz/abc"), "//xyz/abc/./foo");
+        BOOST_TEST_EQ(fs::absolute(fs::path("../foo"), "//xyz/abc"), "//xyz/abc/../foo");
+        if (platform == "POSIX")
+        {
+          BOOST_TEST_EQ(fs::absolute(fs::path("foo"), "/abc"), "/abc/foo");
+          BOOST_TEST_EQ(fs::absolute(fs::path("foo/bar"), "/abc"), "/abc/foo/bar");
+          BOOST_TEST_EQ(fs::absolute(fs::path("."), "/abc"), "/abc/.");
+          BOOST_TEST_EQ(fs::absolute(fs::path(".."), "/abc"), "/abc/..");
+          BOOST_TEST_EQ(fs::absolute(fs::path("./foo"), "/abc"), "/abc/./foo");
+          BOOST_TEST_EQ(fs::absolute(fs::path("../foo"), "/abc"), "/abc/../foo");
+        }
+
+  }
+
+  //  canonical_basic_tests  -----------------------------------------------------------//
+
+  void canonical_basic_tests()
+  {
+    cout << "canonical_basic_tests..." << endl;
+
+    // error handling
+    error_code ec;
+    ec.clear();
+    fs::canonical("no-such-file", ec);
+    BOOST_TEST(ec);
+    ec.clear();
+    fs::canonical("no-such-file", "x", ec);
+    BOOST_TEST(ec);
+    bool ok(false);
+    try { fs::canonical("no-such-file"); }
+    catch (const fs::filesystem_error&) { ok = true; }
+    BOOST_TEST(ok);
+
+    // non-symlink tests; also see canonical_symlink_tests()
+    BOOST_TEST_EQ(fs::canonical(""), fs::current_path());
+    BOOST_TEST_EQ(fs::canonical("", fs::current_path()), fs::current_path());
+    BOOST_TEST_EQ(fs::canonical("", ""), fs::current_path());
+    BOOST_TEST_EQ(fs::canonical(fs::current_path()), fs::current_path());
+    BOOST_TEST_EQ(fs::canonical(fs::current_path(), ""), fs::current_path());
+    BOOST_TEST_EQ(fs::canonical(fs::current_path(), "no-such-file"), fs::current_path());
+
+    BOOST_TEST_EQ(fs::canonical("."), fs::current_path());
+    BOOST_TEST_EQ(fs::canonical(".."), fs::current_path().parent_path());
+    BOOST_TEST_EQ(fs::canonical("/"), fs::current_path().root_path());
+
+    fs::path relative_dir(dir.filename());
+    BOOST_TEST_EQ(fs::canonical(dir), dir);
+    BOOST_TEST_EQ(fs::canonical(relative_dir), dir);
+    BOOST_TEST_EQ(fs::canonical(dir / "f0"), dir / "f0");
+    BOOST_TEST_EQ(fs::canonical(relative_dir / "f0"), dir / "f0");
+    BOOST_TEST_EQ(fs::canonical(relative_dir / "./f0"), dir / "f0");
+    BOOST_TEST_EQ(fs::canonical(relative_dir / "d1/../f0"), dir / "f0");
+
+    // treat parent of root as itself on both POSIX and Windows
+    fs::path init(fs::initial_path());
+    fs::path root(init.root_path());
+    fs::path::const_iterator it(init.begin());
+    fs::path first;   // relative first non-root directory
+#  ifdef BOOST_WINDOWS_API
+    if (!init.empty())
+      ++it;
+#  endif
+    if (++it != init.end())
+      first = *it;
+    fs::path expected(root/first);
+
+    cout << "  init: " << init << endl;
+    cout << "  root: " << root << endl;
+    cout << "  first: " << first << endl;
+    cout << "  expected: " << expected << endl;
+
+    //  ticket 10187 tests
+    BOOST_TEST_EQ(fs::canonical(root / "../.." / first), expected);
+    BOOST_TEST_EQ(fs::canonical(fs::path("../..") / first, root), expected);
+    BOOST_TEST_EQ(fs::canonical(fs::path("/../..") / first, fs::current_path().root_name()), expected);
+
+    //  ticket 9683 test
+    BOOST_TEST_EQ(fs::canonical(root / first / "../../../../.."), root);
+  }
+
+  //  canonical_symlink_tests  -----------------------------------------------------------//
+
+  void canonical_symlink_tests()
+  {
+    cout << "canonical_symlink_tests..." << endl;
+
+    fs::path relative_dir(dir.filename());
+    BOOST_TEST_EQ(fs::canonical(dir / "sym-d1/f2"), d1 / "f2");
+    BOOST_TEST_EQ(fs::canonical(relative_dir / "sym-d1/f2"), d1 / "f2");
+  }
+
+ //  copy_file_tests  ------------------------------------------------------------------//
+
+  void copy_file_tests(const fs::path& f1x, const fs::path& d1x)
+  {
+    cout << "copy_file_tests..." << endl;
+
+    BOOST_TEST(fs::exists(f1x));
+    fs::remove(d1x / "f2");  // remove possible residue from prior testing
+    BOOST_TEST(fs::exists(d1x));
+    BOOST_TEST(!fs::exists(d1x / "f2"));
+    cout << " copy " << f1x << " to " << d1x / "f2" << endl;
+    fs::copy_file(f1x, d1x / "f2");
+    cout << " copy complete" << endl;
+    BOOST_TEST(fs::exists(f1x));
+    BOOST_TEST(fs::exists(d1x / "f2"));
+    BOOST_TEST(!fs::is_directory(d1x / "f2"));
+    verify_file(d1x / "f2", "file-f1");
+
+    bool copy_ex_ok = false;
+    try { fs::copy_file(f1x, d1x / "f2"); }
+    catch (const fs::filesystem_error &) { copy_ex_ok = true; }
+    BOOST_TEST(copy_ex_ok);
+
+    copy_ex_ok = false;
+    try { fs::copy_file(f1x, d1x / "f2", fs::copy_option::fail_if_exists); }
+    catch (const fs::filesystem_error &) { copy_ex_ok = true; }
+    BOOST_TEST(copy_ex_ok);
+
+    create_file(d1x / "f2", "1234567890");
+    BOOST_TEST_EQ(fs::file_size(d1x / "f2"), 10U);
+    copy_ex_ok = true;
+    try { fs::copy_file(f1x, d1x / "f2", fs::copy_option::overwrite_if_exists); }
+    catch (const fs::filesystem_error &) { copy_ex_ok = false; }
+    BOOST_TEST(copy_ex_ok);
+    BOOST_TEST_EQ(fs::file_size(d1x / "f2"), 7U);
+    verify_file(d1x / "f2", "file-f1");
+  }
+
+ //  symlink_status_tests  -------------------------------------------------------------//
+
+  void symlink_status_tests()
+  {
+    cout << "symlink_status_tests..." << endl;
+
+    boost::system::error_code ec;
+
+    fs::path dangling_sym(dir / "dangling-sym");
+    fs::path dangling_directory_sym(dir / "dangling-directory-sym");
+    fs::path sym_d1(dir / "sym-d1");
+    fs::path symsym_d1(dir / "symsym-d1");
+    fs::path sym_f1(dir / "sym-f1");
+    fs::path symsym_f1(dir / "symsym-f1");
+    fs::create_symlink("does not exist", dangling_sym);
+    fs::create_directory_symlink("does not exist", dangling_directory_sym);
+    fs::create_directory_symlink(d1, sym_d1);
+    fs::create_directory_symlink(sym_d1, symsym_d1);
+    fs::create_symlink(f1, sym_f1);
+    fs::create_symlink(sym_f1, symsym_f1);
+
+    //  verify all cases detected as symlinks
+    BOOST_TEST_EQ(fs::symlink_status(dangling_sym, ec).type(), fs::symlink_file);
+    BOOST_TEST_EQ(fs::symlink_status(dangling_directory_sym, ec).type(), fs::symlink_file);
+    BOOST_TEST_EQ(fs::symlink_status(sym_d1, ec).type(), fs::symlink_file);
+    BOOST_TEST_EQ(fs::symlink_status(symsym_d1, ec).type(), fs::symlink_file);
+    BOOST_TEST_EQ(fs::symlink_status(sym_f1, ec).type(), fs::symlink_file);
+    BOOST_TEST_EQ(fs::symlink_status(symsym_f1, ec).type(), fs::symlink_file);
+
+    //  verify all cases resolve to the (possibly recursive) symlink target
+    BOOST_TEST_EQ(fs::status(dangling_sym, ec).type(), fs::file_not_found);
+    BOOST_TEST_EQ(fs::status(dangling_directory_sym, ec).type(), fs::file_not_found);
+
+    BOOST_TEST_EQ(fs::status(sym_d1, ec).type(), fs::directory_file);
+    BOOST_TEST_EQ(fs::status(sym_d1 / "d1f1", ec).type(), fs::regular_file);
+    BOOST_TEST_EQ(fs::status(symsym_d1, ec).type(), fs::directory_file);
+    BOOST_TEST_EQ(fs::status(symsym_d1 / "d1f1", ec).type(), fs::regular_file);
+    BOOST_TEST_EQ(fs::status(sym_f1, ec).type(), fs::regular_file);
+    BOOST_TEST_EQ(fs::status(symsym_f1, ec).type(), fs::regular_file);
+
+#ifdef BOOST_WINDOWS_API
+
+    //  On Windows, telling if a filesystem entry is a symlink (or junction which is
+    //  treated as a symlink), rather than some other kind of reparse point, requires some
+    //  baroque code. See ticket #4663, filesystem objects falsely identified as symlinks.
+    //  This test checks two directory entries created by Windows itself to verify
+    //  is_symlink() works correctly. Try "dir /A %HOMEPATH%\.." from the command line to
+    //  verify this test is valid on your version of Windows. It only works on Vista and
+    //  later.
+
+    fs::path users(getenv("HOMEDRIVE"));
+    BOOST_TEST(!users.empty());
+    users /= "\\Users";
+    BOOST_TEST(fs::exists(users));
+    BOOST_TEST(fs::exists(users/"All Users"));
+    BOOST_TEST(fs::exists(users/"Default User"));
+    BOOST_TEST(fs::is_symlink(users/"All Users"));      // dir /A reports <SYMLINKD>
+    BOOST_TEST(fs::is_symlink(users/"Default User"));   // dir /A reports <JUNCTION>
+
+#endif
+  }
+
+ //  copy_symlink_tests  ---------------------------------------------------------------//
+
+  void copy_symlink_tests(const fs::path& f1x, const fs::path& d1x)
+  {
+    cout << "copy_symlink_tests..." << endl;
+
+    BOOST_TEST(fs::exists(f1x));
+    BOOST_TEST(fs::exists(d1x));
+    fs::path sym1(d1x / "symlink1");
+    fs::remove(sym1);  // remove possible residue from prior testing
+    fs::create_symlink(f1x, sym1);
+    BOOST_TEST(fs::exists(sym1));
+    BOOST_TEST(fs::is_symlink(sym1));
+    fs::path sym2(d1x / "symlink2");
+    fs::copy_symlink(sym1, sym2);
+    BOOST_TEST(fs::exists(sym2));
+    BOOST_TEST(fs::is_symlink(sym2));
+    //fs::path sym3(d1x / "symlink3");
+    //fs::copy(sym1, sym3);
+    //BOOST_TEST(fs::exists(sym3));
+    //BOOST_TEST(fs::is_symlink(sym3));
+
+    bool copy_ex_ok = false;
+    try { fs::copy_symlink("no-such-file", "new-symlink1"); }
+    catch (const fs::filesystem_error &) { copy_ex_ok = true; }
+    BOOST_TEST(copy_ex_ok);
+
+    copy_ex_ok = false;
+    try { fs::copy_symlink(f1x, "new-symlink2"); } // should fail; f1x not symlink
+    catch (const fs::filesystem_error &) { copy_ex_ok = true; }
+    BOOST_TEST(copy_ex_ok);
+  }
+
+  //  write_time_tests  ----------------------------------------------------------------//
+
+  void write_time_tests(const fs::path& dirx)
+  {
+    cout << "write_time_tests..." << endl;
+
+    fs::path f1x = dirx / "foobar2";
+    create_file(f1x, "foobar2");
+    BOOST_TEST(fs::exists(f1x));
+    BOOST_TEST(!fs::is_directory(f1x));
+    BOOST_TEST(fs::is_regular_file(f1x));
+    BOOST_TEST(fs::file_size(f1x) == 7);
+    verify_file(f1x, "foobar2");
+
+    // Some file system report last write time as local (FAT), while
+    // others (NTFS) report it as UTC. The C standard does not specify
+    // if time_t is local or UTC.
+
+    std::time_t ft = fs::last_write_time(f1x);
+    cout << "\n  UTC last_write_time() for a file just created is "
+      << std::asctime(std::gmtime(&ft)) << endl;
+
+    std::tm * tmp = std::localtime(&ft);
+    cout << "\n  Year is " << tmp->tm_year << endl;
+    --tmp->tm_year;
+    cout << "  Change year to " << tmp->tm_year << endl;
+    fs::last_write_time(f1x, std::mktime(tmp));
+    std::time_t ft2 = fs::last_write_time(f1x);
+    cout << "  last_write_time() for the file is now "
+      << std::asctime(std::gmtime(&ft2)) << endl;
+    BOOST_TEST(ft != fs::last_write_time(f1x));
+
+    cout << "\n  Reset to current time" << endl;
+    fs::last_write_time(f1x, ft);
+    double time_diff = std::difftime(ft, fs::last_write_time(f1x));
+    cout
+      << "  original last_write_time() - current last_write_time() is "
+      << time_diff << " seconds" << endl;
+    BOOST_TEST(time_diff >= -60.0 && time_diff <= 60.0);
+  }
+
+  //  platform_specific_tests  ---------------------------------------------------------//
+
+  void platform_specific_tests()
+  {
+    // Windows only tests
+    if (platform == "Windows")
+    {
+      cout << "Windows specific tests..." << endl;
+      if (!skip_long_windows_tests)
+      {
+        cout << "  (may take several seconds)"<< endl;
+
+        BOOST_TEST(!fs::exists(fs::path("//share-not")));
+        BOOST_TEST(!fs::exists(fs::path("//share-not/")));
+        BOOST_TEST(!fs::exists(fs::path("//share-not/foo")));
+      }
+      cout << endl;
+
+      BOOST_TEST(!fs::exists("tools/jam/src/:sys:stat.h")); // !exists() if ERROR_INVALID_NAME
+      BOOST_TEST(!fs::exists(":sys:stat.h")); // !exists() if ERROR_INVALID_PARAMETER
+      BOOST_TEST(dir.string().size() > 1
+        && dir.string()[1] == ':'); // verify path includes drive
+
+      BOOST_TEST(fs::system_complete("").empty());
+      BOOST_TEST(fs::system_complete("/") == fs::initial_path().root_path());
+      BOOST_TEST(fs::system_complete("foo")
+        == fs::initial_path() / "foo");
+
+      fs::path p1(fs::system_complete("/foo"));
+      BOOST_TEST_EQ(p1.string().size(), 6U);  // this failed during v3 development due to bug
+      std::string s1(p1.string() );
+      std::string s2(fs::initial_path().root_path().string()+"foo");
+      BOOST_TEST_EQ(s1, s2);
+
+      BOOST_TEST(fs::system_complete(fs::path(fs::initial_path().root_name()))
+        == fs::initial_path());
+      BOOST_TEST(fs::system_complete(fs::path(fs::initial_path().root_name().string()
+        + "foo")).string() == fs::initial_path() / "foo");
+      BOOST_TEST(fs::system_complete(fs::path("c:/")).generic_string()
+        == "c:/");
+      BOOST_TEST(fs::system_complete(fs::path("c:/foo")).generic_string()
+        ==  "c:/foo");
+      BOOST_TEST(fs::system_complete(fs::path("//share")).generic_string()
+        ==  "//share");
+
+      // Issue 9016 asked that NTFS directory junctions be recognized as directories.
+      // That is equivalent to recognizing them as symlinks, and then the normal symlink
+      // mechanism takes care of recognizing them as directories.
+      //
+      // Directory junctions are very similar to symlinks, but have some performance
+      // and other advantages over symlinks. They can be created from the command line
+      // with "mklink /j junction-name target-path".
+
+      if (create_symlink_ok)  // only if symlinks supported
+      {
+        cout << "  directory junction tests..." << endl;
+        BOOST_TEST(fs::exists(dir));
+        BOOST_TEST(fs::exists(dir / "d1/d1f1"));
+        fs::path junc(dir / "junc");
+        if (fs::exists(junc))
+          fs::remove(junc);
+        fs::path new_junc(dir / "new-junc");
+        if (fs::exists(new_junc))
+          fs::remove(new_junc);
+
+        //cout << "    dir is " << dir << endl;
+        //cout << "    junc is " << junc << endl;
+        //cout << "    new_junc is " << new_junc << endl;
+        //cout << "    current_path() is " << fs::current_path() << endl;
+
+        fs::path cur_path(fs::current_path());
+        fs::current_path(dir);
+        //cout << "    current_path() is " << fs::current_path() << endl;
+        BOOST_TEST(std::system("mklink /j junc d1") == 0);
+        //std::system("dir");
+        fs::current_path(cur_path);
+        //cout << "    current_path() is " << fs::current_path() << endl;
+
+        BOOST_TEST(fs::exists(junc));
+        BOOST_TEST(fs::is_symlink(junc));
+        BOOST_TEST(fs::is_directory(junc));
+        BOOST_TEST(!fs::is_regular_file(junc));
+        BOOST_TEST(fs::exists(junc / "d1f1"));
+        BOOST_TEST(fs::is_regular_file(junc / "d1f1"));
+
+        int count = 0;
+        for (fs::directory_iterator itr(junc);
+          itr != fs::directory_iterator(); ++itr)
+        {
+          //cout << itr->path() << endl;
+          ++count;
+        }
+        cout << "    iteration count is " << count << endl;
+        BOOST_TEST(count > 0);
+
+        fs::rename(junc, new_junc);
+        BOOST_TEST(!fs::exists(junc));
+        BOOST_TEST(fs::exists(new_junc));
+        BOOST_TEST(fs::is_symlink(new_junc));
+        BOOST_TEST(fs::is_directory(new_junc));
+        BOOST_TEST(!fs::is_regular_file(new_junc));
+        BOOST_TEST(fs::exists(new_junc / "d1f1"));
+        BOOST_TEST(fs::is_regular_file(new_junc / "d1f1"));
+
+        fs::remove(new_junc);
+        BOOST_TEST(!fs::exists(new_junc / "d1f1"));
+        BOOST_TEST(!fs::exists(new_junc));
+        BOOST_TEST(fs::exists(dir));
+        BOOST_TEST(fs::exists(dir / "d1/d1f1"));
+      }
+
+    } // Windows
+
+    else if (platform == "POSIX")
+    {
+      cout << "POSIX specific tests..." << endl;
+      BOOST_TEST(fs::system_complete("").empty());
+      BOOST_TEST(fs::initial_path().root_path().string() == "/");
+      BOOST_TEST(fs::system_complete("/").string() == "/");
+      BOOST_TEST(fs::system_complete("foo").string()
+        == fs::initial_path().string()+"/foo");
+      BOOST_TEST(fs::system_complete("/foo").string()
+        == fs::initial_path().root_path().string()+"foo");
+    } // POSIX
+  }
+
+  //  initial_tests  -------------------------------------------------------------------//
+
+  void initial_tests()
+  {
+    cout << "initial_tests..." << endl;
+
+    cout << "  current_path().string() is\n  \""
+              << fs::initial_path().string()
+              << "\"\n\n";
+    BOOST_TEST(fs::initial_path() == fs::current_path());
+    BOOST_TEST(fs::initial_path().is_absolute());
+    BOOST_TEST(fs::current_path().is_absolute());
+    BOOST_TEST(fs::initial_path().string()
+      == fs::current_path().string());
+  }
+
+  //  space_tests  ---------------------------------------------------------------------//
+
+  void space_tests()
+  {
+    cout << "space_tests..." << endl;
+
+    // make some reasonable assuptions for testing purposes
+    fs::space_info spi(fs::space(dir));
+    BOOST_TEST(spi.capacity > 1000000);
+    BOOST_TEST(spi.free > 1000);
+    BOOST_TEST(spi.capacity > spi.free);
+    BOOST_TEST(spi.free >= spi.available);
+
+    // it is convenient to display space, but older VC++ versions choke
+#   if !defined(BOOST_MSVC) || _MSC_VER >= 1300  // 1300 == VC++ 7.0
+      cout << "   capacity = " << spi.capacity << '\n';
+      cout << "       free = " << spi.free << '\n';
+      cout << "  available = " << spi.available << '\n';
+#   endif
+  }
+
+  //  equivalent_tests  ----------------------------------------------------------------//
+
+  void equivalent_tests(const fs::path& f1x)
+  {
+    cout << "equivalent_tests..." << endl;
+
+    BOOST_TEST(CHECK_EXCEPTION(bad_equivalent, ENOENT));
+    BOOST_TEST(fs::equivalent(f1x, dir / "f1"));
+    BOOST_TEST(fs::equivalent(dir, d1 / ".."));
+    BOOST_TEST(!fs::equivalent(f1x, dir));
+    BOOST_TEST(!fs::equivalent(dir, f1x));
+    BOOST_TEST(!fs::equivalent(d1, d2));
+    BOOST_TEST(!fs::equivalent(dir, ng));
+    BOOST_TEST(!fs::equivalent(ng, dir));
+    BOOST_TEST(!fs::equivalent(f1x, ng));
+    BOOST_TEST(!fs::equivalent(ng, f1x));
+  }
+
+  //  temp_directory_path_tests  -------------------------------------------------------//
+  //    contributed by Jeff Flinn
+
+  struct guarded_env_var
+  {
+    struct previous_value
+    {
+      std::string m_name;
+      std::string m_string;
+      bool        m_empty;
+
+      previous_value(const char* name)
+      : m_name(name)
+      , m_empty (true)
+      {
+        if(const char* value = getenv(name))
+        {
+          m_string.assign(value);
+          m_empty = false;
+        }
+        else
+        {
+          m_empty = true;
+        }
+      }
+      ~previous_value()
+      {
+        m_empty? unsetenv_(m_name.c_str())
+               : setenv_(m_name.c_str(), m_string.c_str(), 1);
+      }
+    };
+
+    previous_value m_previous_value;
+
+    guarded_env_var(const char* name, const char* value)
+    : m_previous_value(name)
+    {
+//      std::cout << name << " old value is \"" << getenv(name) << "\"" << std::endl;
+      value ? setenv_(name, value, 1) : unsetenv_(name);
+//      std::cout << name << " new value is \"" << getenv(name) << "\"" << std::endl;
+    }
+  };
+
+  void temp_directory_path_tests()
+  {
+    {
+      cout << "temp_directory_path_tests..." << endl;
+      cout << " temp_directory_path() is " << fs::temp_directory_path() << endl;
+
+#if defined(BOOST_WINDOWS_API)
+
+//**************************************************************************************//
+//   Bug in GCC 4.9 getenv() when !defined(__GXX_EXPERIMENTAL_CXX0X__) makes these
+//   tests meaningless, so skip them
+//**************************************************************************************//
+
+#if defined(__CYGWIN__) && !defined(__GXX_EXPERIMENTAL_CXX0X__) && __GNUC__ == 4
+      cout << "Bug in GCC 4.9 getenv() when !defined(__GXX_EXPERIMENTAL_CXX0X__) makes these"
+        "tests meaningless, so skip them" << endl;
+      return;
+#endif
+      // Test ticket #5300, temp_directory_path failure on Windows with path length > 130.
+      // (This test failed prior to the fix being applied.)
+      {
+        const wchar_t long_name[] =
+          L"12345678901234567890123456789012345678901234567890"
+          L"12345678901234567890123456789012345678901234567890"
+          L"12345678901234567890123456789012345678901234567890#"   // total 151 chars
+          ;
+        fs::path p (temp_dir);
+        p /= long_name;
+        fs::create_directory(p);
+
+        guarded_env_var tmp_guard("TMP", p.string().c_str());
+        error_code ec;
+        fs::path tmp_path = fs::temp_directory_path(ec);
+        BOOST_TEST(!ec);
+        BOOST_TEST_EQ(p, tmp_path);
+        fs::remove(p);
+      }
+
+      // Test ticket #10388, null character at end of filesystem::temp_directory_path path
+      {
+        guarded_env_var tmp_guard("TMP", fs::initial_path().string().c_str());
+
+        error_code ec;
+        fs::path tmp_path = fs::temp_directory_path(ec);
+        BOOST_TEST_EQ(tmp_path, fs::initial_path());
+      }
+
+#endif
+      BOOST_TEST(!fs::temp_directory_path().empty());
+      BOOST_TEST(exists(fs::temp_directory_path()));
+      fs::path ph = fs::temp_directory_path() / fs::unique_path("temp_directory_path_test_%%%%_%%%%.txt");
+      {
+          if(exists(ph)) remove(ph);
+          std::ofstream f(ph.BOOST_FILESYSTEM_C_STR);
+          f << "passed";
+      }
+      BOOST_TEST(exists(ph));
+      {
+          std::ifstream f(ph.BOOST_FILESYSTEM_C_STR);
+          std::string   s;
+          f >> s;
+          BOOST_TEST(s == "passed");
+      }
+      remove(ph);
+      BOOST_TEST(!exists(ph));
+    }
+
+    fs::path test_temp_dir = temp_dir;
+
+#if defined(BOOST_POSIX_API)
+    {
+      struct guarded_tmp_vars
+      {
+        guarded_env_var m_tmpdir ;
+        guarded_env_var m_tmp    ;
+        guarded_env_var m_temp   ;
+        guarded_env_var m_tempdir;
+
+        guarded_tmp_vars
+        ( const fs::path::value_type* tmpdir
+        , const fs::path::value_type* tmp
+        , const fs::path::value_type* temp
+        , const fs::path::value_type* tempdir
+        )
+        : m_tmpdir ("TMPDIR" , tmpdir )
+        , m_tmp    ("TMP"    , tmp    )
+        , m_temp   ("TEMP"   , temp   )
+        , m_tempdir("TEMPDIR", tempdir)
+        {}
+      };
+
+      {
+        guarded_tmp_vars vars(test_temp_dir.c_str(), 0, 0, 0);
+        fs::path ph = fs::temp_directory_path();
+        BOOST_TEST(equivalent(test_temp_dir, ph));
+      }
+      {
+        guarded_tmp_vars vars(0, test_temp_dir.c_str(), 0, 0);
+        fs::path ph = fs::temp_directory_path();
+        BOOST_TEST(equivalent(test_temp_dir, ph));
+      }
+      {
+        guarded_tmp_vars vars(0, 0, test_temp_dir.c_str(), 0);
+        fs::path ph = fs::temp_directory_path();
+        BOOST_TEST(equivalent(test_temp_dir, ph));
+      }
+      {
+        guarded_tmp_vars vars(0, 0, 0, test_temp_dir.c_str());
+        fs::path ph = fs::temp_directory_path();
+        BOOST_TEST(equivalent(test_temp_dir, ph));
+      }
+    }
+#endif
+
+#if defined(BOOST_WINDOWS_API)
+
+    struct guarded_tmp_vars
+    {
+      guarded_env_var m_tmp        ;
+      guarded_env_var m_temp       ;
+      guarded_env_var m_localappdata;
+      guarded_env_var m_userprofile;
+
+      guarded_tmp_vars
+      ( const char* tmp
+      , const char* temp
+      , const char* localappdata
+      , const char* userprofile
+      )
+      : m_tmp          ("TMP"           , tmp         )
+      , m_temp         ("TEMP"          , temp        )
+      , m_localappdata ("LOCALAPPDATA"  , localappdata)
+      , m_userprofile  ("USERPROFILE"   , userprofile )
+      {}
+    };
+
+    // test the GetWindowsDirectoryW()/Temp fallback
+    {
+      guarded_tmp_vars vars(0, 0, 0, 0);
+      error_code ec;
+      fs::path ph = fs::temp_directory_path(ec);
+      BOOST_TEST(!ec);
+      cout << "Fallback test, temp_directory_path() returned " << ph << endl;
+    }
+
+    {
+      guarded_tmp_vars vars(test_temp_dir.string().c_str(), 0, 0, 0);
+      fs::path ph = fs::temp_directory_path();
+      BOOST_TEST(equivalent(test_temp_dir, ph));
+    }
+    {
+      guarded_tmp_vars vars(0, test_temp_dir.string().c_str(), 0, 0);
+      fs::path ph = fs::temp_directory_path();
+      BOOST_TEST(equivalent(test_temp_dir, ph));
+    }
+
+    fs::create_directory(test_temp_dir / L"Temp");
+    {
+      guarded_tmp_vars vars(0, 0, test_temp_dir.string().c_str(), 0);
+      fs::path ph = fs::temp_directory_path();
+      BOOST_TEST(equivalent(test_temp_dir/L"Temp", ph));
+      cout << "temp_directory_path() returned " << ph << endl;
+    }
+    {
+      guarded_tmp_vars vars(0, 0, 0, test_temp_dir.string().c_str());
+      fs::path ph = fs::temp_directory_path();
+      BOOST_TEST(equivalent(test_temp_dir/L"Temp", ph));
+      cout << "temp_directory_path() returned " << ph << endl;
+    }
+#endif
+  }
+
+  //  weakly_canonical_tests  ----------------------------------------------------------//
+
+  void weakly_canonical_tests()
+  {
+    cout << "weakly_canonical_tests..." << endl;
+    cout << "  dir is " << dir << endl;
+
+    BOOST_TEST_EQ(fs::weakly_canonical("no-such/foo/bar"), "no-such/foo/bar");
+    BOOST_TEST_EQ(fs::weakly_canonical("no-such/foo/../bar"), "no-such/bar");
+    BOOST_TEST_EQ(fs::weakly_canonical(dir), dir);
+    BOOST_TEST_EQ(fs::weakly_canonical(dir/"no-such/foo/bar"), dir/"no-such/foo/bar");
+    BOOST_TEST_EQ(fs::weakly_canonical(dir/"no-such/foo/../bar"), dir/"no-such/bar");
+    BOOST_TEST_EQ(fs::weakly_canonical(dir/"../no-such/foo/../bar"),
+      dir.parent_path()/"no-such/bar");
+    BOOST_TEST_EQ(fs::weakly_canonical("c:/no-such/foo/bar"), "c:/no-such/foo/bar");
+
+    fs::create_directory_symlink(dir / "d1", dir / "sld1");
+    BOOST_TEST_EQ(fs::weakly_canonical(dir / "sld1/foo/bar"), dir / "d1/foo/bar");
+
+    BOOST_TEST_EQ(relative(dir / "sld1/foo/bar/baz", dir / "d1/foo"), "bar/baz");
+  }
+
+  //  _tests  --------------------------------------------------------------------------//
+
+  //void _tests()
+  //{
+  //  cout << "_tests..." << endl;
+  //}
+
+} // unnamed namespace
+
+  //------------------------------------------------------------------------------------//
+  //                                                                                    //
+  //                                    main                                            //
+  //                                                                                    //
+  //------------------------------------------------------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+// document state of critical macros
+#ifdef BOOST_POSIX_API
+  cout << "BOOST_POSIX_API is defined\n";
+#endif
+#ifdef BOOST_WINDOWS_API
+  cout << "BOOST_WINDOWS_API is defined\n";
+#endif
+
+  for (; argc > 1; --argc, ++argv)
+  {
+    if (*argv[1]=='-' && *(argv[1]+1)=='t')
+      report_throws = true;
+    else if (*argv[1]=='-' && *(argv[1]+1)=='x')
+      cleanup = false;
+    else if (*argv[1]=='-' && *(argv[1]+1)=='w')
+      skip_long_windows_tests = true;
+  }
+
+  // The choice of platform to test is made at runtime rather than compile-time
+  // so that compile errors for all platforms will be detected even though
+  // only the current platform is runtime tested.
+# if defined(BOOST_POSIX_API)
+    platform = "POSIX";
+# elif defined(BOOST_WINDOWS_API)
+    platform = "Windows";
+    language_id = ::GetUserDefaultUILanguage();
+# else
+#   error neither BOOST_POSIX_API nor BOOST_WINDOWS_API is defined. See boost/system/api_config.hpp
+# endif
+  cout << "API is " << platform << endl;
+  cout << "initial_path() is " << fs::initial_path() << endl;
+  fs::path ip = fs::initial_path();
+  do_the_right_thing_tests(); // compile-only tests, but call anyhow to suppress warnings
+
+  for (fs::path::const_iterator it = ip.begin(); it != ip.end(); ++it)
+  {
+    if (it != ip.begin())
+      cout << ", ";
+    cout << *it;
+  }
+  cout << endl;
+
+  dir = fs::initial_path() / temp_dir;
+
+  if (fs::exists(dir))
+  {
+    cout << "remove residue from prior failed tests..." << endl;
+    fs::remove_all(dir);
+  }
+  BOOST_TEST(!fs::exists(dir));
+
+  // several functions give unreasonable results if uintmax_t isn't 64-bits
+  cout << "sizeof(boost::uintmax_t) = " << sizeof(boost::uintmax_t) << '\n';
+  BOOST_TEST(sizeof(boost::uintmax_t) >= 8);
+
+  initial_tests();
+  predicate_and_status_tests();
+  exception_tests();
+  create_directory_tests();
+  current_directory_tests();
+  space_tests();
+
+  // create a directory tree that can be used by subsequent tests
+  //
+  //    dir
+  //      d1
+  //        d1f1       // an empty file
+  //      f0           // an empty file
+  //      f1           // a file containing "file f1"
+  //
+  create_tree();
+
+  status_of_nonexistent_tests();
+  status_error_reporting_tests();
+  directory_iterator_tests();
+  create_directories_tests();  // must run AFTER directory_iterator_tests
+
+  bad_create_directory_path = f1;
+  BOOST_TEST(CHECK_EXCEPTION(bad_create_directory, EEXIST));
+  fs::file_status stat = fs::status(f1);
+  BOOST_TEST(fs::status_known(stat));
+  BOOST_TEST(fs::exists(stat));
+  BOOST_TEST(!fs::is_directory(stat));
+  BOOST_TEST(fs::is_regular_file(stat));
+  BOOST_TEST(!fs::is_other(stat));
+  BOOST_TEST(!fs::is_symlink(stat));
+
+  equivalent_tests(f1);
+  create_hard_link_tests();
+  create_symlink_tests();
+  resize_file_tests();
+  absolute_tests();
+  canonical_basic_tests();
+  permissions_tests();
+  copy_file_tests(f1, d1);
+  if (create_symlink_ok)  // only if symlinks supported
+  {
+    symlink_status_tests();
+    copy_symlink_tests(f1, d1);
+    canonical_symlink_tests();
+    weakly_canonical_tests();
+  }
+  iterator_status_tests();  // lots of cases by now, so a good time to test
+//  dump_tree(dir);
+  recursive_directory_iterator_tests();
+  recursive_iterator_status_tests();  // lots of cases by now, so a good time to test
+  rename_tests();
+  remove_tests(dir);
+  if (create_symlink_ok)  // only if symlinks supported
+    remove_symlink_tests();
+  write_time_tests(dir);
+  temp_directory_path_tests();
+
+  platform_specific_tests();  // do these last since they take a lot of time on Windows,
+                              // and that's a pain during manual testing
+
+  cout << "testing complete" << endl;
+
+  // post-test cleanup
+  if (cleanup)
+  {
+    cout << "post-test removal of " << dir << endl;
+    BOOST_TEST(fs::remove_all(dir) != 0);
+    // above was added just to simplify testing, but it ended up detecting
+    // a bug (failure to close an internal search handle).
+    cout << "post-test removal complete" << endl;
+//    BOOST_TEST(!fs::exists(dir));  // nice test, but doesn't play well with TortoiseGit cache
+  }
+
+  cout << "returning from main()" << endl;
+  return ::boost::report_errors();
+} // main
diff --git a/src/boost/libs/filesystem/test/operations_unit_test.cpp b/src/boost/libs/filesystem/test/operations_unit_test.cpp
new file mode 100644
index 00000000..d9a5675e
--- /dev/null
+++ b/src/boost/libs/filesystem/test/operations_unit_test.cpp
@@ -0,0 +1,402 @@
+//  operations_unit_test.cpp  ----------------------------------------------------------//
+
+//  Copyright Beman Dawes 2008, 2009, 2015
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//  ------------------------------------------------------------------------------------//
+
+//  This program is misnamed - it is really a smoke test rather than a unit test
+
+//  ------------------------------------------------------------------------------------//
+
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem.hpp>   // make sure filesystem.hpp works
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/system/error_code.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+#include <iostream>
+
+using namespace boost::filesystem;
+using namespace boost::system;
+using std::cout;
+using std::endl;
+using std::string;
+
+#define CHECK(x) check(x, __FILE__, __LINE__)
+
+namespace
+{
+  bool cleanup = true;
+
+  void check(bool ok, const char* file, int line)
+  {
+    if (ok) return;
+
+    ++::boost::detail::test_errors();
+
+    cout << file << '(' << line << "): test failed\n";
+  }
+
+  //  file_status_test  ----------------------------------------------------------------//
+
+  void file_status_test()
+  {
+    cout << "file_status test..." << endl;
+
+    file_status s = status(".");
+    int v = s.permissions();
+    cout << "  status(\".\") permissions are "
+      << std::oct << (v & 0777) << std::dec << endl;
+    CHECK((v & 0400) == 0400);
+
+    s = symlink_status(".");
+    v = s.permissions();
+    cout << "  symlink_status(\".\") permissions are "
+      << std::oct << (v & 0777) << std::dec << endl;
+    CHECK((v & 0400) == 0400);
+  }
+
+  //  query_test  ----------------------------------------------------------------------//
+
+  void query_test()
+  {
+    cout << "query test..." << endl;
+
+    error_code ec;
+
+    CHECK(file_size("no-such-file", ec) == static_cast<boost::uintmax_t>(-1));
+    CHECK(ec == errc::no_such_file_or_directory);
+
+    CHECK(status("no-such-file") == file_status(file_not_found, no_perms));
+
+    CHECK(exists("/"));
+    CHECK(is_directory("/"));
+    CHECK(!exists("no-such-file"));
+
+    exists("/", ec);
+    if (ec)
+    {
+      cout << "exists(\"/\", ec) resulted in non-zero ec.value()" << endl;
+      cout << "ec value: " << ec.value() << ", message: "<< ec.message() << endl;
+    }
+    CHECK(!ec);
+
+    CHECK(exists("/"));
+    CHECK(is_directory("/"));
+    CHECK(!is_regular_file("/"));
+    CHECK(!boost::filesystem::is_empty("/"));
+    CHECK(!is_other("/"));
+  }
+
+  //  directory_iterator_test  -----------------------------------------------//
+
+  void directory_iterator_test()
+  {
+    cout << "directory_iterator_test..." << endl;
+
+    directory_iterator end;
+
+    directory_iterator it(".");
+
+    CHECK(!it->path().empty());
+
+    if (is_regular_file(it->status()))
+    {
+      CHECK(is_regular_file(it->symlink_status()));
+      CHECK(!is_directory(it->status()));
+      CHECK(!is_symlink(it->status()));
+      CHECK(!is_directory(it->symlink_status()));
+      CHECK(!is_symlink(it->symlink_status()));
+    }
+    else
+    {
+      CHECK(is_directory(it->status()));
+      CHECK(is_directory(it->symlink_status()));
+      CHECK(!is_regular_file(it->status()));
+      CHECK(!is_regular_file(it->symlink_status()));
+      CHECK(!is_symlink(it->status()));
+      CHECK(!is_symlink(it->symlink_status()));
+    }
+
+    for (; it != end; ++it)
+    {
+      //cout << "  " << it->path() << "\n";
+    }
+
+    CHECK(directory_iterator(".") != directory_iterator());
+    CHECK(directory_iterator() == end);
+
+#ifndef BOOST_NO_CXX11_RANGE_BASED_FOR
+    for (directory_entry& x : directory_iterator("."))
+    {
+      CHECK(!x.path().empty());
+       //cout << "  " << x.path() << "\n";
+    }
+    const directory_iterator dir_itr(".");
+    for (directory_entry& x : dir_itr)
+    {
+      CHECK(!x.path().empty());
+      //cout << "  " << x.path() << "\n";
+    }
+#endif
+
+    for (directory_iterator itr("."); itr != directory_iterator(); ++itr)
+    {
+      CHECK(!itr->path().empty());
+      //cout << "  " << itr->path() << "\n";
+    }
+
+    cout << "directory_iterator_test complete" << endl;
+  }
+
+  //  recursive_directory_iterator_test  -----------------------------------------------//
+
+  void recursive_directory_iterator_test()
+  {
+    cout << "recursive_directory_iterator_test..." << endl;
+
+    recursive_directory_iterator end;
+
+    recursive_directory_iterator it(".");
+
+    CHECK(!it->path().empty());
+
+    if (is_regular_file(it->status()))
+    {
+      CHECK(is_regular_file(it->symlink_status()));
+      CHECK(!is_directory(it->status()));
+      CHECK(!is_symlink(it->status()));
+      CHECK(!is_directory(it->symlink_status()));
+      CHECK(!is_symlink(it->symlink_status()));
+    }
+    else
+    {
+      CHECK(is_directory(it->status()));
+      CHECK(is_directory(it->symlink_status()));
+      CHECK(!is_regular_file(it->status()));
+      CHECK(!is_regular_file(it->symlink_status()));
+      CHECK(!is_symlink(it->status()));
+      CHECK(!is_symlink(it->symlink_status()));
+    }
+
+    for (; it != end; ++it)
+    {
+      //cout << "  " << it->path() << "\n";
+    }
+
+    CHECK(recursive_directory_iterator(".") != recursive_directory_iterator());
+    CHECK(recursive_directory_iterator() == end);
+
+#ifndef BOOST_NO_CXX11_RANGE_BASED_FOR
+    for (directory_entry& x : recursive_directory_iterator("."))
+    {
+      CHECK(!x.path().empty());
+      //cout << "  " << x.path() << "\n";
+    }
+    const recursive_directory_iterator dir_itr(".");
+    for (directory_entry& x : dir_itr)
+    {
+      CHECK(!x.path().empty());
+      //cout << "  " << x.path() << "\n";
+    }
+#endif
+
+    for (recursive_directory_iterator itr(".");
+      itr != recursive_directory_iterator(); ++itr)
+    {
+      CHECK(!itr->path().empty());
+      //cout << "  " << itr->path() << "\n";
+    }
+
+    cout << "recursive_directory_iterator_test complete" << endl;
+  }
+
+  //  operations_test  -------------------------------------------------------//
+
+  void operations_test()
+  {
+    cout << "operations test..." << endl;
+
+    error_code ec;
+
+    CHECK(!create_directory("/", ec));
+
+    CHECK(!boost::filesystem::remove("no-such-file-or-directory"));
+    CHECK(!remove_all("no-such-file-or-directory"));
+
+    space_info info = space("/");
+
+    CHECK(info.available <= info.capacity);
+
+    CHECK(equivalent("/", "/"));
+    CHECK(!equivalent("/", "."));
+
+    std::time_t ft = last_write_time(".");
+    ft = -1;
+    last_write_time(".", ft, ec);
+  }
+
+  //  directory_entry_test  ------------------------------------------------------------//
+
+  void directory_entry_test()
+  {
+    cout << "directory_entry test..." << endl;
+
+    directory_entry de("foo.bar",
+      file_status(regular_file, owner_all), file_status(directory_file, group_all));
+
+    CHECK(de.path() == "foo.bar");
+    CHECK(de.status() == file_status(regular_file, owner_all));
+    CHECK(de.symlink_status() == file_status(directory_file, group_all));
+    CHECK(de < directory_entry("goo.bar"));
+    CHECK(de == directory_entry("foo.bar"));
+    CHECK(de != directory_entry("goo.bar"));
+    de.replace_filename("bar.foo");
+    CHECK(de.path() == "bar.foo");
+  }
+
+  //  directory_entry_overload_test  ---------------------------------------------------//
+
+  void directory_entry_overload_test()
+  {
+    cout << "directory_entry overload test..." << endl;
+
+    directory_iterator it(".");
+    path p(*it);
+  }
+
+  //  error_handling_test  -------------------------------------------------------------//
+
+  void error_handling_test()
+  {
+    cout << "error handling test..." << endl;
+
+    bool threw(false);
+    try
+    {
+      file_size("no-such-file");
+    }
+    catch (const boost::filesystem::filesystem_error & ex)
+    {
+      threw = true;
+      cout << "\nas expected, attempt to get size of non-existent file threw a filesystem_error\n"
+        "what() returns " << ex.what() << "\n";
+    }
+    catch (...)
+    {
+      cout << "\nunexpected exception type caught" << endl;
+    }
+
+    CHECK(threw);
+
+    error_code ec;
+    CHECK(!create_directory("/", ec));
+  }
+
+  //  string_file_tests  ---------------------------------------------------------------//
+
+  void string_file_tests(const path& temp_dir)
+  {
+    cout << "string_file_tests..." << endl;
+    std::string contents("0123456789");
+    path p(temp_dir / "string_file");
+    save_string_file(p, contents);
+    save_string_file(p, contents);
+    BOOST_TEST_EQ(file_size(p), 10u);
+    std::string round_trip;
+    load_string_file(p, round_trip);
+    BOOST_TEST_EQ(contents, round_trip);
+  }
+
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                    main                                              //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+// document state of critical macros
+#ifdef BOOST_POSIX_API
+  cout << "BOOST_POSIX_API is defined\n";
+#endif
+#ifdef BOOST_WINDOWS_API
+  cout << "BOOST_WINDOWS_API is defined\n";
+#endif
+  cout << "BOOST_FILESYSTEM_DECL" << BOOST_STRINGIZE(=BOOST_FILESYSTEM_DECL) << "\n";
+  cout << "BOOST_SYMBOL_VISIBLE" << BOOST_STRINGIZE(=BOOST_SYMBOL_VISIBLE) << "\n";
+
+  cout << "current_path() is " << current_path().string() << endl;
+
+  if (argc >= 2)
+  {
+    cout << "argv[1] is '" << argv[1] << "', changing current_path() to it" << endl;
+
+    error_code ec;
+    current_path( argv[1], ec );
+
+    if (ec)
+    {
+      cout << "current_path('" << argv[1] << "') failed: " << ec << ": " << ec.message() << endl;
+    }
+
+    cout << "current_path() is " << current_path().string() << endl;
+  }
+
+  const path temp_dir(current_path() / ".." / unique_path("op-unit_test-%%%%-%%%%-%%%%"));
+  cout << "temp_dir is " << temp_dir.string() << endl;
+
+  create_directory(temp_dir);
+
+  file_status_test();
+  query_test();
+  directory_iterator_test();
+  recursive_directory_iterator_test();
+  operations_test();
+  directory_entry_test();
+  directory_entry_overload_test();
+  error_handling_test();
+  string_file_tests(temp_dir);
+
+  cout << unique_path() << endl;
+  cout << unique_path("foo-%%%%%-%%%%%-bar") << endl;
+  cout << unique_path("foo-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-%%%%-bar") << endl;
+  cout << unique_path("foo-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-%%%%%-bar") << endl;
+
+  cout << "testing complete" << endl;
+
+  // post-test cleanup
+  if (cleanup)
+  {
+    cout << "post-test removal of " << temp_dir << endl;
+    BOOST_TEST(remove_all(temp_dir) != 0);
+    // above was added just to simplify testing, but it ended up detecting
+    // a bug (failure to close an internal search handle).
+    cout << "post-test removal complete" << endl;
+//    BOOST_TEST(!fs::exists(dir));  // nice test, but doesn't play well with TortoiseGit cache
+  }
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/path_test.cpp b/src/boost/libs/filesystem/test/path_test.cpp
new file mode 100644
index 00000000..d8405653
--- /dev/null
+++ b/src/boost/libs/filesystem/test/path_test.cpp
@@ -0,0 +1,2046 @@
+//  path_test program  -----------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2002, 2008
+//  Copyright Vladimir Prus 2002
+
+//  Use, modification, and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See library home page at http://www.boost.org/libs/filesystem
+
+//  basic_path's stem(), extension(), and replace_extension() tests are based
+//  on basename(), extension(), and change_extension() tests from the original
+//  convenience_test.cpp by Vladimir Prus.
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                     Caution                                          //
+//                                                                                      //
+//  The class path relational operators (==, !=, <, etc.) on Windows treat slash and    //
+//  backslash as equal. Thus any tests on Windows where the difference between slash    //
+//  and backslash is significant should compare strings rather than paths.              //
+//                                                                                      //
+//  BOOST_TEST(path == path)                     // '\\' and '/' are equal              //
+//  BOOST_TEST(path == convertable to string)    // '\\' and '/' are equal              //
+//  PATH_TEST_EQ(path, path)                     // '\\' and '/' are equal              //
+//                                                                                      //
+//  BOOST_TEST(path.string() == path.string())   // '\\' and '/' are not equal          //
+//  BOOST_TEST(path.string() ==                                                         //
+//               convertable to string)          // '\\' and '/' are not equal          //
+//  PATH_TEST_EQ(path.string(),                                                         //
+//                convertable to string)         // '\\' and '/' are not equal          //
+//                                                                                      //
+//  The last of these is often what is needed, so the PATH_TEST_EQ macro is provided.   //
+//  It converts its first argument to a path, and then performs a .string() on it,      //
+//  eliminating much boilerplate .string() or even path(...).string() code.             //
+//                                                                                      //
+//  PATH_TEST_EQ(path, convertable to string)    // '\\' and '/' are not equal          //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/exception.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/utility.hpp>
+#include <boost/next_prior.hpp>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+#include <cstring>
+#include <cassert>
+#include <boost/detail/lightweight_test.hpp>
+#include <boost/detail/lightweight_main.hpp>
+
+namespace fs = boost::filesystem;
+using boost::filesystem::path;
+using boost::next;
+using boost::prior;
+
+#ifdef BOOST_WINDOWS_API
+# define BOOST_DIR_SEP "\\"
+#else
+# define BOOST_DIR_SEP "/"
+#endif
+
+#define PATH_TEST_EQ(a, b) check(a, b, __FILE__, __LINE__)
+
+namespace
+{
+  std::string platform(BOOST_PLATFORM);
+
+  void check(const fs::path & source,
+              const std::string & expected, const char* file, int line)
+  {
+    if (source.string() == expected)
+      return;
+
+    std::cout << file
+              << '(' << line << "): source: \"" << source.string()
+              << "\" != expected: \"" << expected
+              << "\"" << std::endl;
+
+    ++::boost::detail::test_errors();
+  }
+
+  path p1("fe/fi/fo/fum");
+  path p2(p1);
+  path p3;
+  path p4("foobar");
+  path p5;
+
+  //  exception_tests  -----------------------------------------------------------------//
+
+  void exception_tests()
+  {
+    std::cout << "exception_tests..." << std::endl;
+    const std::string str_1("string-1");
+    boost::system::error_code ec(12345, boost::system::system_category());
+    try { throw fs::filesystem_error(str_1, ec); }
+    catch (const fs::filesystem_error & ex)
+    {
+      //std::cout << ex.what() << "*" << std::endl;
+      //BOOST_TEST(std::strcmp(ex.what(),
+      //  "string-1: Unknown error") == 0);
+      BOOST_TEST(ex.code() == ec);
+    }
+
+    try { throw fs::filesystem_error(str_1, "p1", "p2", ec); }
+    catch (const fs::filesystem_error & ex)
+    {
+      //std::cout << ex.what() << "*" << std::endl;
+      //BOOST_TEST(std::strcmp(ex.what(),
+      //  "string-1: Unknown error: \"p1\", \"p2\"") == 0);
+      BOOST_TEST(ex.code() == ec);
+      BOOST_TEST(ex.path1() == "p1");
+      BOOST_TEST(ex.path2() == "p2");
+    }
+  }
+
+  //  overload_tests  ------------------------------------------------------------------//
+
+  // These verify various overloads don't cause compiler errors
+  // They pre-date operations_unit_test.cpp
+
+  void overload_tests()
+  {
+    std::cout << "overload_tests..." << std::endl;
+
+    fs::exists(p1);
+    fs::exists("foo");
+    fs::exists(std::string("foo"));
+
+    fs::exists(p1 / path("foo"));
+    fs::exists(p1 / "foo");
+    fs::exists(p1 / std::string("foo"));
+
+    fs::exists("foo" / p1);
+    fs::exists(std::string("foo") / p1);
+
+    p4 /= path("foo");
+    p4 /= "foo";
+    p4 /= std::string("foo");
+  }
+
+  //  iterator_tests  ------------------------------------------------------------------//
+
+  void iterator_tests()
+  {
+    std::cout << "iterator_tests..." << std::endl;
+
+    path itr_ck = "";
+    path::const_iterator itr = itr_ck.begin();
+    BOOST_TEST(itr == itr_ck.end());
+
+    itr_ck = "/";
+    itr = itr_ck.begin();
+    BOOST_TEST(itr->string() == "/");
+    BOOST_TEST(++itr == itr_ck.end());
+    BOOST_TEST((--itr)->string() == "/");
+
+    itr_ck = "foo";
+    BOOST_TEST(*itr_ck.begin() == std::string("foo"));
+    BOOST_TEST(boost::next(itr_ck.begin()) == itr_ck.end());
+    BOOST_TEST(*boost::prior(itr_ck.end()) == std::string("foo"));
+    BOOST_TEST(boost::prior(itr_ck.end()) == itr_ck.begin());
+
+    itr_ck = path("/foo");
+    BOOST_TEST((itr_ck.begin())->string() == "/");
+    BOOST_TEST(*boost::next(itr_ck.begin()) == std::string("foo"));
+    BOOST_TEST(boost::next(boost::next(itr_ck.begin())) == itr_ck.end());
+    BOOST_TEST(boost::next(itr_ck.begin()) == boost::prior(itr_ck.end()));
+    BOOST_TEST(*boost::prior(itr_ck.end()) == std::string("foo"));
+    BOOST_TEST(*boost::prior(boost::prior(itr_ck.end())) == std::string("/"));
+    BOOST_TEST(boost::prior(boost::prior(itr_ck.end())) == itr_ck.begin());
+
+    itr_ck = "/foo/bar";
+    itr = itr_ck.begin();
+    BOOST_TEST(itr->string() == "/");
+    BOOST_TEST(*++itr == std::string("foo"));
+    BOOST_TEST(*++itr == std::string("bar"));
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, "bar");
+    PATH_TEST_EQ(*--itr, "foo");
+    PATH_TEST_EQ(*--itr, "/");
+
+    itr_ck = "../f"; // previously failed due to short name bug
+    itr = itr_ck.begin();
+    PATH_TEST_EQ(itr->string(), "..");
+    PATH_TEST_EQ(*++itr, "f");
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, "f");
+    PATH_TEST_EQ(*--itr, "..");
+
+    // POSIX says treat "/foo/bar/" as "/foo/bar/."
+    itr_ck = "/foo/bar/";
+    itr = itr_ck.begin();
+    PATH_TEST_EQ(itr->string(), "/");
+    PATH_TEST_EQ(*++itr, "foo");
+    BOOST_TEST(itr != itr_ck.end());
+    PATH_TEST_EQ(*++itr, "bar");
+    BOOST_TEST(itr != itr_ck.end());
+    PATH_TEST_EQ(*++itr, ".");
+    BOOST_TEST(itr != itr_ck.end());  // verify the . isn't also seen as end()
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, ".");
+    PATH_TEST_EQ(*--itr, "bar");
+    PATH_TEST_EQ(*--itr, "foo");
+    PATH_TEST_EQ(*--itr, "/");
+
+    // POSIX says treat "/f/b/" as "/f/b/."
+    itr_ck = "/f/b/";
+    itr = itr_ck.begin();
+    PATH_TEST_EQ(itr->string(), "/");
+    PATH_TEST_EQ(*++itr, "f");
+    PATH_TEST_EQ(*++itr, "b");
+    PATH_TEST_EQ(*++itr, ".");
+    BOOST_TEST(itr != itr_ck.end());  // verify the . isn't also seen as end()
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, ".");
+    PATH_TEST_EQ(*--itr, "b");
+    PATH_TEST_EQ(*--itr, "f");
+    PATH_TEST_EQ(*--itr, "/");
+
+    // POSIX says treat "a/b/" as "a/b/."
+    // Although similar to the prior test case, this failed the ". isn't end" test due to
+    // a bug while the prior case did not fail.
+    itr_ck = "a/b/";
+    itr = itr_ck.begin();
+    PATH_TEST_EQ(*itr, "a");
+    PATH_TEST_EQ(*++itr, "b");
+    PATH_TEST_EQ(*++itr, ".");
+    BOOST_TEST(itr != itr_ck.end());  // verify the . isn't also seen as end()
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, ".");
+    PATH_TEST_EQ(*--itr, "b");
+    PATH_TEST_EQ(*--itr, "a");
+
+    itr_ck = "//net";
+    itr = itr_ck.begin();
+    // two leading slashes are permitted by POSIX (as implementation defined),
+    // while for Windows it is always well defined (as a network name)
+    PATH_TEST_EQ(itr->string(), "//net");
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, "//net");
+
+    itr_ck = "//net/";
+    itr = itr_ck.begin();
+    PATH_TEST_EQ(itr->string(), "//net");
+    PATH_TEST_EQ(*++itr, "/");
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, "/");
+    PATH_TEST_EQ(*--itr, "//net");
+
+    itr_ck = "//foo///bar///";
+    itr = itr_ck.begin();
+    PATH_TEST_EQ(itr->string(), "//foo");
+    PATH_TEST_EQ(*++itr, "/");
+    PATH_TEST_EQ(*++itr, "bar");
+    PATH_TEST_EQ(*++itr, ".");
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, ".");
+    PATH_TEST_EQ(*--itr, "bar");
+    PATH_TEST_EQ(*--itr, "/");
+    PATH_TEST_EQ(*--itr, "//foo");
+
+    itr_ck = "///foo///bar///";
+    itr = itr_ck.begin();
+    // three or more leading slashes are to be treated as a single slash
+    PATH_TEST_EQ(itr->string(), "/");
+    PATH_TEST_EQ(*++itr, "foo");
+    PATH_TEST_EQ(*++itr, "bar");
+    PATH_TEST_EQ(*++itr, ".");
+    BOOST_TEST(++itr == itr_ck.end());
+    PATH_TEST_EQ(*--itr, ".");
+    PATH_TEST_EQ(*--itr, "bar");
+    PATH_TEST_EQ(*--itr, "foo");
+    PATH_TEST_EQ(*--itr, "/");
+
+    if (platform == "Windows")
+    {
+      itr_ck = "c:/";
+      itr = itr_ck.begin();
+      PATH_TEST_EQ(itr->string(), "c:");
+      PATH_TEST_EQ(*++itr, std::string("/"));
+      BOOST_TEST(++itr == itr_ck.end());
+      PATH_TEST_EQ(*--itr, "/");
+      PATH_TEST_EQ(*--itr, "c:");
+
+      itr_ck = "c:\\";
+      itr = itr_ck.begin();
+      PATH_TEST_EQ(itr->string(), "c:");
+      PATH_TEST_EQ(*++itr, "/");  // test that iteration returns generic format
+      BOOST_TEST(++itr == itr_ck.end());
+      PATH_TEST_EQ(*--itr, "/");  // test that iteration returns generic format
+      PATH_TEST_EQ(*--itr, "c:");
+
+      itr_ck = "c:/foo";
+      itr = itr_ck.begin();
+      BOOST_TEST(*itr == std::string("c:"));
+      BOOST_TEST(*++itr == std::string("/"));
+      BOOST_TEST(*++itr == std::string("foo"));
+      BOOST_TEST(++itr == itr_ck.end());
+      BOOST_TEST(*--itr == std::string("foo"));
+      BOOST_TEST((--itr)->string() == "/");
+      BOOST_TEST(*--itr == std::string("c:"));
+
+      itr_ck = "c:\\foo";
+      itr = itr_ck.begin();
+      BOOST_TEST(*itr == std::string("c:"));
+      BOOST_TEST(*++itr == std::string("\\"));
+      BOOST_TEST(*++itr == std::string("foo"));
+      BOOST_TEST(++itr == itr_ck.end());
+      BOOST_TEST(*--itr == std::string("foo"));
+      BOOST_TEST(*--itr == std::string("\\"));
+      BOOST_TEST(*--itr == std::string("c:"));
+
+      itr_ck = "\\\\\\foo\\\\\\bar\\\\\\";
+      itr = itr_ck.begin();
+      // three or more leading slashes are to be treated as a single slash
+      PATH_TEST_EQ(itr->string(), "/");
+      PATH_TEST_EQ(*++itr, "foo");
+      PATH_TEST_EQ(*++itr, "bar");
+      PATH_TEST_EQ(*++itr, ".");
+      BOOST_TEST(++itr == itr_ck.end());
+      PATH_TEST_EQ(*--itr, ".");
+      PATH_TEST_EQ(*--itr, "bar");
+      PATH_TEST_EQ(*--itr, "foo");
+      PATH_TEST_EQ(*--itr, "/");
+
+      itr_ck = "c:foo";
+      itr = itr_ck.begin();
+      BOOST_TEST(*itr == std::string("c:"));
+      BOOST_TEST(*++itr == std::string("foo"));
+      BOOST_TEST(++itr == itr_ck.end());
+      BOOST_TEST(*--itr == std::string("foo"));
+      BOOST_TEST(*--itr == std::string("c:"));
+
+      itr_ck = "c:foo/";
+      itr = itr_ck.begin();
+      BOOST_TEST(*itr == std::string("c:"));
+      BOOST_TEST(*++itr == std::string("foo"));
+      BOOST_TEST(*++itr == std::string("."));
+      BOOST_TEST(++itr == itr_ck.end());
+      BOOST_TEST(*--itr == std::string("."));
+      BOOST_TEST(*--itr == std::string("foo"));
+      BOOST_TEST(*--itr == std::string("c:"));
+
+      itr_ck = path("c:");
+      BOOST_TEST(*itr_ck.begin() == std::string("c:"));
+      BOOST_TEST(next(itr_ck.begin()) == itr_ck.end());
+      BOOST_TEST(prior(itr_ck.end()) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("c:"));
+
+      itr_ck = path("c:/");
+      BOOST_TEST(*itr_ck.begin() == std::string("c:"));
+      BOOST_TEST(*next(itr_ck.begin()) == std::string("/"));
+      BOOST_TEST(next(next(itr_ck.begin())) == itr_ck.end());
+      BOOST_TEST(prior(prior(itr_ck.end())) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("/"));
+      BOOST_TEST(*prior(prior(itr_ck.end())) == std::string("c:"));
+
+      itr_ck = path("c:foo");
+      BOOST_TEST(*itr_ck.begin() == std::string("c:"));
+      BOOST_TEST(*next(itr_ck.begin()) == std::string("foo"));
+      BOOST_TEST(next(next(itr_ck.begin())) == itr_ck.end());
+      BOOST_TEST(prior(prior(itr_ck.end())) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("foo"));
+      BOOST_TEST(*prior(prior(itr_ck.end())) == std::string("c:"));
+
+      itr_ck = path("c:/foo");
+      BOOST_TEST(*itr_ck.begin() == std::string("c:"));
+      BOOST_TEST(*next(itr_ck.begin()) == std::string("/"));
+      BOOST_TEST(*next(next(itr_ck.begin())) == std::string("foo"));
+      BOOST_TEST(next(next(next(itr_ck.begin()))) == itr_ck.end());
+      BOOST_TEST(prior(prior(prior(itr_ck.end()))) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("foo"));
+      BOOST_TEST(*prior(prior(itr_ck.end())) == std::string("/"));
+      BOOST_TEST(*prior(prior(prior(itr_ck.end()))) == std::string("c:"));
+
+      itr_ck = path("//net");
+      BOOST_TEST(*itr_ck.begin() == std::string("//net"));
+      BOOST_TEST(next(itr_ck.begin()) == itr_ck.end());
+      BOOST_TEST(prior(itr_ck.end()) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("//net"));
+
+      itr_ck = path("//net/");
+      PATH_TEST_EQ(itr_ck.begin()->string(), "//net");
+      PATH_TEST_EQ(next(itr_ck.begin())->string(), "/");
+      BOOST_TEST(next(next(itr_ck.begin())) == itr_ck.end());
+      BOOST_TEST(prior(prior(itr_ck.end())) == itr_ck.begin());
+      PATH_TEST_EQ(prior(itr_ck.end())->string(), "/");
+      PATH_TEST_EQ(prior(prior(itr_ck.end()))->string(), "//net");
+
+      itr_ck = path("//net/foo");
+      BOOST_TEST(*itr_ck.begin() == std::string("//net"));
+      BOOST_TEST(*next(itr_ck.begin()) == std::string("/"));
+      BOOST_TEST(*next(next(itr_ck.begin())) == std::string("foo"));
+      BOOST_TEST(next(next(next(itr_ck.begin()))) == itr_ck.end());
+      BOOST_TEST(prior(prior(prior(itr_ck.end()))) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("foo"));
+      BOOST_TEST(*prior(prior(itr_ck.end())) == std::string("/"));
+      BOOST_TEST(*prior(prior(prior(itr_ck.end()))) == std::string("//net"));
+
+      itr_ck = path("prn:");
+      BOOST_TEST(*itr_ck.begin() == std::string("prn:"));
+      BOOST_TEST(next(itr_ck.begin()) == itr_ck.end());
+      BOOST_TEST(prior(itr_ck.end()) == itr_ck.begin());
+      BOOST_TEST(*prior(itr_ck.end()) == std::string("prn:"));
+    }
+    else
+    {
+      itr_ck = "///";
+      itr = itr_ck.begin();
+      PATH_TEST_EQ(itr->string(),  "/");
+      BOOST_TEST(++itr == itr_ck.end());
+    }
+  }
+
+  //  non_member_tests  ----------------------------------------------------------------//
+
+  void non_member_tests()
+  {
+    std::cout << "non_member_tests..." << std::endl;
+
+    // test non-member functions, particularly operator overloads
+
+    path e, e2;
+    std::string es, es2;
+    char ecs[] = "";
+    char ecs2[] = "";
+
+    char acs[] = "a";
+    std::string as(acs);
+    path a(as);
+
+    char acs2[] = "a";
+    std::string as2(acs2);
+    path a2(as2);
+
+    char bcs[] = "b";
+    std::string bs(bcs);
+    path b(bs);
+
+    // swap
+    a.swap(b);
+    BOOST_TEST(a.string() == "b");
+    BOOST_TEST(b.string() == "a");
+    fs::swap(a, b);
+    BOOST_TEST(a.string() == "a");
+    BOOST_TEST(b.string() == "b");
+
+    // probe operator /
+    PATH_TEST_EQ(path("") / ".", ".");
+    PATH_TEST_EQ(path("") / "..", "..");
+    if (platform == "Windows")
+    {
+      BOOST_TEST(path("foo\\bar") == "foo/bar");
+      BOOST_TEST((b / a).native() == path("b\\a").native());
+      BOOST_TEST((bs / a).native() == path("b\\a").native());
+      BOOST_TEST((bcs / a).native() == path("b\\a").native());
+      BOOST_TEST((b / as).native() == path("b\\a").native());
+      BOOST_TEST((b / acs).native() == path("b\\a").native());
+      PATH_TEST_EQ(path("a") / "b", "a\\b");
+      PATH_TEST_EQ(path("..") / "", "..");
+      PATH_TEST_EQ(path("foo") / path("bar"), "foo\\bar"); // path arg
+      PATH_TEST_EQ(path("foo") / "bar", "foo\\bar");       // const char* arg
+      PATH_TEST_EQ(path("foo") / path("woo/bar").filename(), "foo\\bar"); // const std::string & arg
+      PATH_TEST_EQ("foo" / path("bar"), "foo\\bar");
+      PATH_TEST_EQ(path("..") / ".." , "..\\..");
+      PATH_TEST_EQ(path("/") / ".." , "/..");
+      PATH_TEST_EQ(path("/..") / ".." , "/..\\..");
+      PATH_TEST_EQ(path("..") / "foo" , "..\\foo");
+      PATH_TEST_EQ(path("foo") / ".." , "foo\\..");
+      PATH_TEST_EQ(path("..") / "f" , "..\\f");
+      PATH_TEST_EQ(path("/..") / "f" , "/..\\f");
+      PATH_TEST_EQ(path("f") / ".." , "f\\..");
+      PATH_TEST_EQ(path("foo") / ".." / ".." , "foo\\..\\..");
+      PATH_TEST_EQ(path("foo") / ".." / ".." / ".." , "foo\\..\\..\\..");
+      PATH_TEST_EQ(path("f") / ".." / "b" , "f\\..\\b");
+      PATH_TEST_EQ(path("foo") / ".." / "bar" , "foo\\..\\bar");
+      PATH_TEST_EQ(path("foo") / "bar" / ".." , "foo\\bar\\..");
+      PATH_TEST_EQ(path("foo") / "bar" / ".." / "..", "foo\\bar\\..\\..");
+      PATH_TEST_EQ(path("foo") / "bar" / ".." / "blah", "foo\\bar\\..\\blah");
+      PATH_TEST_EQ(path("f") / "b" / ".." , "f\\b\\..");
+      PATH_TEST_EQ(path("f") / "b" / ".." / "a", "f\\b\\..\\a");
+      PATH_TEST_EQ(path("foo") / "bar" / "blah" / ".." / "..", "foo\\bar\\blah\\..\\..");
+      PATH_TEST_EQ(path("foo") / "bar" / "blah" / ".." / ".." / "bletch", "foo\\bar\\blah\\..\\..\\bletch");
+
+      PATH_TEST_EQ(path(".") / "foo", ".\\foo");
+      PATH_TEST_EQ(path(".") / "..", ".\\..");
+      PATH_TEST_EQ(path("foo") / ".", "foo\\.");
+      PATH_TEST_EQ(path("..") / ".", "..\\.");
+      PATH_TEST_EQ(path(".") / ".", ".\\.");
+      PATH_TEST_EQ(path(".") / "." / ".", ".\\.\\.");
+      PATH_TEST_EQ(path(".") / "foo" / ".", ".\\foo\\.");
+      PATH_TEST_EQ(path("foo") / "." / "bar", "foo\\.\\bar");
+      PATH_TEST_EQ(path("foo") / "." / ".", "foo\\.\\.");
+      PATH_TEST_EQ(path("foo") / "." / "..", "foo\\.\\..");
+      PATH_TEST_EQ(path(".") / "." / "..", ".\\.\\..");
+      PATH_TEST_EQ(path(".") / ".." / ".", ".\\..\\.");
+      PATH_TEST_EQ(path("..") / "." / ".", "..\\.\\.");
+    }
+    else  // POSIX
+    {
+      PATH_TEST_EQ(b / a, "b/a");
+      PATH_TEST_EQ(bs / a, "b/a");
+      PATH_TEST_EQ(bcs / a, "b/a");
+      PATH_TEST_EQ(b / as, "b/a");
+      PATH_TEST_EQ(b / acs, "b/a");
+      PATH_TEST_EQ(path("a") / "b", "a/b");
+      PATH_TEST_EQ(path("..") / "", "..");
+      PATH_TEST_EQ(path("") / "..", "..");
+      PATH_TEST_EQ(path("foo") / path("bar"), "foo/bar"); // path arg
+      PATH_TEST_EQ(path("foo") / "bar", "foo/bar");       // const char* arg
+      PATH_TEST_EQ(path("foo") / path("woo/bar").filename(), "foo/bar"); // const std::string & arg
+      PATH_TEST_EQ("foo" / path("bar"), "foo/bar");
+      PATH_TEST_EQ(path("..") / ".." , "../..");
+      PATH_TEST_EQ(path("/") / ".." , "/..");
+      PATH_TEST_EQ(path("/..") / ".." , "/../..");
+      PATH_TEST_EQ(path("..") / "foo" , "../foo");
+      PATH_TEST_EQ(path("foo") / ".." , "foo/..");
+      PATH_TEST_EQ(path("..") / "f" , "../f");
+      PATH_TEST_EQ(path("/..") / "f" , "/../f");
+      PATH_TEST_EQ(path("f") / ".." , "f/..");
+      PATH_TEST_EQ(path("foo") / ".." / ".." , "foo/../..");
+      PATH_TEST_EQ(path("foo") / ".." / ".." / ".." , "foo/../../..");
+      PATH_TEST_EQ(path("f") / ".." / "b" , "f/../b");
+      PATH_TEST_EQ(path("foo") / ".." / "bar" , "foo/../bar");
+      PATH_TEST_EQ(path("foo") / "bar" / ".." , "foo/bar/..");
+      PATH_TEST_EQ(path("foo") / "bar" / ".." / "..", "foo/bar/../..");
+      PATH_TEST_EQ(path("foo") / "bar" / ".." / "blah", "foo/bar/../blah");
+      PATH_TEST_EQ(path("f") / "b" / ".." , "f/b/..");
+      PATH_TEST_EQ(path("f") / "b" / ".." / "a", "f/b/../a");
+      PATH_TEST_EQ(path("foo") / "bar" / "blah" / ".." / "..", "foo/bar/blah/../..");
+      PATH_TEST_EQ(path("foo") / "bar" / "blah" / ".." / ".." / "bletch", "foo/bar/blah/../../bletch");
+
+      PATH_TEST_EQ(path(".") / "foo", "./foo");
+      PATH_TEST_EQ(path(".") / "..", "./..");
+      PATH_TEST_EQ(path("foo") / ".", "foo/.");
+      PATH_TEST_EQ(path("..") / ".", "../.");
+      PATH_TEST_EQ(path(".") / ".", "./.");
+      PATH_TEST_EQ(path(".") / "." / ".", "././.");
+      PATH_TEST_EQ(path(".") / "foo" / ".", "./foo/.");
+      PATH_TEST_EQ(path("foo") / "." / "bar", "foo/./bar");
+      PATH_TEST_EQ(path("foo") / "." / ".", "foo/./.");
+      PATH_TEST_EQ(path("foo") / "." / "..", "foo/./..");
+      PATH_TEST_EQ(path(".") / "." / "..", "././..");
+      PATH_TEST_EQ(path(".") / ".." / ".", "./../.");
+      PATH_TEST_EQ(path("..") / "." / ".", ".././.");
+    }
+
+    // probe operator <
+    BOOST_TEST(!(e < e2));
+    BOOST_TEST(!(es < e2));
+    BOOST_TEST(!(ecs < e2));
+    BOOST_TEST(!(e < es2));
+    BOOST_TEST(!(e < ecs2));
+
+    BOOST_TEST(e < a);
+    BOOST_TEST(es < a);
+    BOOST_TEST(ecs < a);
+    BOOST_TEST(e < as);
+    BOOST_TEST(e < acs);
+
+    BOOST_TEST(a < b);
+    BOOST_TEST(as < b);
+    BOOST_TEST(acs < b);
+    BOOST_TEST(a < bs);
+    BOOST_TEST(a < bcs);
+
+    BOOST_TEST(!(a < a2));
+    BOOST_TEST(!(as < a2));
+    BOOST_TEST(!(acs < a2));
+    BOOST_TEST(!(a < as2));
+    BOOST_TEST(!(a < acs2));
+
+    // make sure basic_path overloads don't conflict with std::string overloads
+
+    BOOST_TEST(!(as < as));
+    BOOST_TEST(!(as < acs));
+    BOOST_TEST(!(acs < as));
+
+    // character set reality check before lexicographical tests
+    BOOST_TEST(std::string("a.b") < std::string("a/b"));
+    // verify compare is actually lexicographical
+    BOOST_TEST(path("a/b") < path("a.b"));
+    BOOST_TEST(path("a/b") == path("a///b"));
+    BOOST_TEST(path("a/b/") == path("a/b/."));
+    BOOST_TEST(path("a/b") != path("a/b/"));
+
+    // make sure the derivative operators also work
+
+    BOOST_TEST(b > a);
+    BOOST_TEST(b > as);
+    BOOST_TEST(b > acs);
+    BOOST_TEST(bs > a);
+    BOOST_TEST(bcs > a);
+
+    BOOST_TEST(!(a2 > a));
+    BOOST_TEST(!(a2 > as));
+    BOOST_TEST(!(a2 > acs));
+    BOOST_TEST(!(as2 > a));
+    BOOST_TEST(!(acs2 > a));
+
+    BOOST_TEST(a <= b);
+    BOOST_TEST(as <= b);
+    BOOST_TEST(acs <= b);
+    BOOST_TEST(a <= bs);
+    BOOST_TEST(a <= bcs);
+
+    BOOST_TEST(a <= a2);
+    BOOST_TEST(as <= a2);
+    BOOST_TEST(acs <= a2);
+    BOOST_TEST(a <= as2);
+    BOOST_TEST(a <= acs2);
+
+    BOOST_TEST(b >= a);
+    BOOST_TEST(bs >= a);
+    BOOST_TEST(bcs >= a);
+    BOOST_TEST(b >= as);
+    BOOST_TEST(b >= acs);
+
+    BOOST_TEST(a2 >= a);
+    BOOST_TEST(as2 >= a);
+    BOOST_TEST(acs2 >= a);
+    BOOST_TEST(a2 >= as);
+    BOOST_TEST(a2 >= acs);
+
+    //  operator == and != are implemented separately, so test separately
+
+    path p101("fe/fi/fo/fum");
+    path p102(p101);
+    path p103("fe/fi/fo/fumm");
+    BOOST_TEST(p101.string() != p103.string());
+
+    // check each overload
+    BOOST_TEST(p101 != p103);
+    BOOST_TEST(p101 != p103.string());
+    BOOST_TEST(p101 != p103.string().c_str());
+    BOOST_TEST(p101.string() != p103);
+    BOOST_TEST(p101.string().c_str() != p103);
+
+    p103 = p102;
+    BOOST_TEST(p101.string() == p103.string());
+
+    // check each overload
+    BOOST_TEST(p101 == p103);
+    BOOST_TEST(p101 == p103.string());
+    BOOST_TEST(p101 == p103.string().c_str());
+    BOOST_TEST(p101.string() == p103);
+    BOOST_TEST(p101.string().c_str() == p103);
+
+    if (platform == "Windows")
+    {
+      std::cout << "  Windows relational tests..." << std::endl;
+      path p10 ("c:\\file");
+      path p11 ("c:/file");
+      // check each overload
+      BOOST_TEST(p10.generic_string() == p11.generic_string());
+      BOOST_TEST(p10 == p11);
+      BOOST_TEST(p10 == p11.string());
+      BOOST_TEST(p10 == p11.string().c_str());
+      BOOST_TEST(p10.string() == p11);
+      BOOST_TEST(p10.string().c_str() == p11);
+      BOOST_TEST(p10 == L"c:\\file");
+      BOOST_TEST(p10 == L"c:/file");
+      BOOST_TEST(p11 == L"c:\\file");
+      BOOST_TEST(p11 == L"c:/file");
+      BOOST_TEST(L"c:\\file" == p10);
+      BOOST_TEST(L"c:/file" == p10);
+      BOOST_TEST(L"c:\\file" == p11);
+      BOOST_TEST(L"c:/file" == p11);
+
+      BOOST_TEST(!(p10.generic_string() != p11.generic_string()));
+      BOOST_TEST(!(p10 != p11));
+      BOOST_TEST(!(p10 != p11.string()));
+      BOOST_TEST(!(p10 != p11.string().c_str()));
+      BOOST_TEST(!(p10.string() != p11));
+      BOOST_TEST(!(p10.string().c_str() != p11));
+      BOOST_TEST(!(p10 != L"c:\\file"));
+      BOOST_TEST(!(p10 != L"c:/file"));
+      BOOST_TEST(!(p11 != L"c:\\file"));
+      BOOST_TEST(!(p11 != L"c:/file"));
+      BOOST_TEST(!(L"c:\\file" != p10));
+      BOOST_TEST(!(L"c:/file" != p10));
+      BOOST_TEST(!(L"c:\\file" != p11));
+      BOOST_TEST(!(L"c:/file" != p11));
+
+      BOOST_TEST(!(p10.string() < p11.string()));
+      BOOST_TEST(!(p10 < p11));
+      BOOST_TEST(!(p10 < p11.string()));
+      BOOST_TEST(!(p10 < p11.string().c_str()));
+      BOOST_TEST(!(p10.string() < p11));
+      BOOST_TEST(!(p10.string().c_str() < p11));
+      BOOST_TEST(!(p10 < L"c:\\file"));
+      BOOST_TEST(!(p10 < L"c:/file"));
+      BOOST_TEST(!(p11 < L"c:\\file"));
+      BOOST_TEST(!(p11 < L"c:/file"));
+      BOOST_TEST(!(L"c:\\file" < p10));
+      BOOST_TEST(!(L"c:/file" < p10));
+      BOOST_TEST(!(L"c:\\file" < p11));
+      BOOST_TEST(!(L"c:/file" < p11));
+
+      BOOST_TEST(!(p10.generic_string() > p11.generic_string()));
+      BOOST_TEST(!(p10 > p11));
+      BOOST_TEST(!(p10 > p11.string()));
+      BOOST_TEST(!(p10 > p11.string().c_str()));
+      BOOST_TEST(!(p10.string() > p11));
+      BOOST_TEST(!(p10.string().c_str() > p11));
+      BOOST_TEST(!(p10 > L"c:\\file"));
+      BOOST_TEST(!(p10 > L"c:/file"));
+      BOOST_TEST(!(p11 > L"c:\\file"));
+      BOOST_TEST(!(p11 > L"c:/file"));
+      BOOST_TEST(!(L"c:\\file" > p10));
+      BOOST_TEST(!(L"c:/file" > p10));
+      BOOST_TEST(!(L"c:\\file" > p11));
+      BOOST_TEST(!(L"c:/file" > p11));
+    }
+
+    // relative
+
+    BOOST_TEST(fs::relative("/abc/def", "/abc") == path("def"));
+    BOOST_TEST(fs::relative("abc/def", "abc") == path("def"));
+    BOOST_TEST(fs::relative("/abc/xyz/def", "/abc") == path("xyz/def"));
+    BOOST_TEST(fs::relative("abc/xyz/def", "abc") == path("xyz/def"));
+
+    if (platform == "Windows")
+    {
+      std::cout << "  Windows relatie tests..." << std::endl;
+      BOOST_TEST(fs::relative("\\abc\\xyz\\def", "/abc") == path("xyz/def"));
+      std::cout << "    fs::relative(\"/abc/xyz/def\", \"/abc\") is "
+        << fs::relative("/abc/xyz/def", "/abc") << std::endl;
+      BOOST_TEST(fs::relative("abc\\xyz\\def", "abc") == path("xyz/def"));
+    }
+  }
+
+  //  query_and_decomposition_tests  ---------------------------------------------------//
+  //
+  //  remove_filename() is also tested here, because its specification depends on
+  //  a decomposition function.
+
+  void query_and_decomposition_tests()
+  {
+    std::cout << "query_and_decomposition_tests..." << std::endl;
+
+    // these are the examples given in reference docs, so check they work
+    BOOST_TEST(path("/foo/bar.txt").parent_path() == "/foo");
+    BOOST_TEST(path("/foo/bar").parent_path() == "/foo");
+    BOOST_TEST(path("/foo/bar/").parent_path() == "/foo/bar");
+    BOOST_TEST(path("/").parent_path() == "");
+    BOOST_TEST(path(".").parent_path() == "");
+    BOOST_TEST(path("..").parent_path() == "");
+    BOOST_TEST(path("/foo/bar.txt").filename() == "bar.txt");
+    BOOST_TEST(path("/foo/bar").filename() == "bar");
+    BOOST_TEST(path("/foo/bar/").filename() == ".");
+    BOOST_TEST(path("/").filename() == "/");
+    BOOST_TEST(path(".").filename() == ".");
+    BOOST_TEST(path("..").filename() == "..");
+
+    // stem() tests not otherwise covered
+    BOOST_TEST(path(".").stem() == ".");
+    BOOST_TEST(path("..").stem() == "..");
+    BOOST_TEST(path(".a").stem() == "");
+    BOOST_TEST(path("b").stem() == "b");
+    BOOST_TEST(path("a/b.txt").stem() == "b");
+    BOOST_TEST(path("a/b.").stem() == "b");
+    BOOST_TEST(path("a.b.c").stem() == "a.b");
+    BOOST_TEST(path("a.b.c.").stem() == "a.b.c");
+
+    // extension() tests not otherwise covered
+    BOOST_TEST(path(".").extension() == "");
+    BOOST_TEST(path("..").extension() == "");
+    BOOST_TEST(path(".a").extension() == ".a");
+    BOOST_TEST(path("a/b").extension() == "");
+    BOOST_TEST(path("a.b/c").extension() == "");
+    BOOST_TEST(path("a/b.txt").extension() == ".txt");
+    BOOST_TEST(path("a/b.").extension() == ".");
+    BOOST_TEST(path("a.b.c").extension() == ".c");
+    BOOST_TEST(path("a.b.c.").extension() == ".");
+    BOOST_TEST(path("a/").extension() == "");
+
+    // main q & d test sequence
+    path p;
+    path q;
+
+    p = q = "";
+    BOOST_TEST(p.relative_path().string() == "");
+    BOOST_TEST(p.parent_path().string() == "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "");
+    BOOST_TEST(p.stem() == "");
+    BOOST_TEST(p.extension() == "");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "");
+    BOOST_TEST(p.root_path().string() == "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(!p.has_relative_path());
+    BOOST_TEST(!p.has_filename());
+    BOOST_TEST(!p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "/";
+    BOOST_TEST(p.relative_path().string() == "");
+    BOOST_TEST(p.parent_path().string() == "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "/");
+    BOOST_TEST(p.stem() == "/");
+    BOOST_TEST(p.extension() == "");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "/");
+    BOOST_TEST(p.root_path().string() == "/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(!p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    if (platform == "POSIX")
+      BOOST_TEST(p.is_absolute());
+    else
+      BOOST_TEST(!p.is_absolute());
+
+    p = q = "//";
+    PATH_TEST_EQ(p.relative_path().string(), "");
+    PATH_TEST_EQ(p.parent_path().string(), "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), "//");
+    PATH_TEST_EQ(p.stem(), "//");
+    PATH_TEST_EQ(p.extension(), "");
+    PATH_TEST_EQ(p.root_name(), "//");
+    PATH_TEST_EQ(p.root_directory(), "");
+    PATH_TEST_EQ(p.root_path().string(), "//");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(!p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "///";
+    PATH_TEST_EQ(p.relative_path().string(), "");
+    PATH_TEST_EQ(p.parent_path().string(), "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), "/");
+    PATH_TEST_EQ(p.stem(), "/");
+    PATH_TEST_EQ(p.extension(), "");
+    PATH_TEST_EQ(p.root_name(), "");
+    PATH_TEST_EQ(p.root_directory(), "/");
+    PATH_TEST_EQ(p.root_path().string(), "/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(!p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    if (platform == "POSIX")
+      BOOST_TEST(p.is_absolute());
+    else
+      BOOST_TEST(!p.is_absolute());
+
+    p = q = ".";
+    BOOST_TEST(p.relative_path().string() == ".");
+    BOOST_TEST(p.parent_path().string() == "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == ".");
+    BOOST_TEST(p.stem() == ".");
+    BOOST_TEST(p.extension() == "");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "");
+    BOOST_TEST(p.root_path().string() == "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "..";
+    BOOST_TEST(p.relative_path().string() == "..");
+    BOOST_TEST(p.parent_path().string() == "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "..");
+    BOOST_TEST(p.stem() == "..");
+    BOOST_TEST(p.extension() == "");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "");
+    BOOST_TEST(p.root_path().string() == "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "foo";
+    BOOST_TEST(p.relative_path().string() == "foo");
+    BOOST_TEST(p.parent_path().string() == "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "foo");
+    BOOST_TEST(p.stem() == "foo");
+    BOOST_TEST(p.extension() == "");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "");
+    BOOST_TEST(p.root_path().string() == "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "/foo";
+    PATH_TEST_EQ(p.relative_path().string(), "foo");
+    PATH_TEST_EQ(p.parent_path().string(), "/");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), "foo");
+    PATH_TEST_EQ(p.stem(), "foo");
+    PATH_TEST_EQ(p.extension(), "");
+    PATH_TEST_EQ(p.root_name(), "");
+    PATH_TEST_EQ(p.root_directory(), "/");
+    PATH_TEST_EQ(p.root_path().string(), "/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(p.has_parent_path());
+    if (platform == "POSIX")
+      BOOST_TEST(p.is_absolute());
+    else
+      BOOST_TEST(!p.is_absolute());
+
+    p = q = "/foo/";
+    PATH_TEST_EQ(p.relative_path().string(), "foo/");
+    PATH_TEST_EQ(p.parent_path().string(), "/foo");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), ".");
+    PATH_TEST_EQ(p.stem(), ".");
+    PATH_TEST_EQ(p.extension(), "");
+    PATH_TEST_EQ(p.root_name(), "");
+    PATH_TEST_EQ(p.root_directory(), "/");
+    PATH_TEST_EQ(p.root_path().string(), "/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(p.has_parent_path());
+    if (platform == "POSIX")
+      BOOST_TEST(p.is_absolute());
+    else
+      BOOST_TEST(!p.is_absolute());
+
+    p = q = "///foo";
+    PATH_TEST_EQ(p.relative_path().string(), "foo");
+    PATH_TEST_EQ(p.parent_path().string(), "/");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), "foo");
+    PATH_TEST_EQ(p.root_name(), "");
+    PATH_TEST_EQ(p.root_directory(), "/");
+    PATH_TEST_EQ(p.root_path().string(), "/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    if (platform == "POSIX")
+      BOOST_TEST(p.is_absolute());
+    else
+      BOOST_TEST(!p.is_absolute());
+
+    p = q = "foo/bar";
+    BOOST_TEST(p.relative_path().string() == "foo/bar");
+    BOOST_TEST(p.parent_path().string() == "foo");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "bar");
+    BOOST_TEST(p.stem() == "bar");
+    BOOST_TEST(p.extension() == "");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "");
+    BOOST_TEST(p.root_path().string() == "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_stem());
+    BOOST_TEST(!p.has_extension());
+    BOOST_TEST(p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "../foo";
+    BOOST_TEST(p.relative_path().string() == "../foo");
+    BOOST_TEST(p.parent_path().string() == "..");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "foo");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "");
+    BOOST_TEST(p.root_path().string() == "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "..///foo";
+    PATH_TEST_EQ(p.relative_path().string(), "..///foo");
+    PATH_TEST_EQ(p.parent_path().string(), "..");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), "foo");
+    PATH_TEST_EQ(p.root_name(), "");
+    PATH_TEST_EQ(p.root_directory(), "");
+    PATH_TEST_EQ(p.root_path().string(), "");
+    BOOST_TEST(!p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = "/foo/bar";
+    BOOST_TEST(p.relative_path().string() == "foo/bar");
+    BOOST_TEST(p.parent_path().string() == "/foo");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "bar");
+    BOOST_TEST(p.root_name() == "");
+    BOOST_TEST(p.root_directory() == "/");
+    BOOST_TEST(p.root_path().string() == "/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(!p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    if (platform == "POSIX")
+      BOOST_TEST(p.is_absolute());
+    else
+      BOOST_TEST(!p.is_absolute());
+
+    // Both POSIX and Windows allow two leading slashs
+    // (POSIX meaning is implementation defined)
+    PATH_TEST_EQ(path("//resource"), "//resource");
+    PATH_TEST_EQ(path("//resource/"), "//resource/");
+    PATH_TEST_EQ(path("//resource/foo"), "//resource/foo");
+
+    p = q = path("//net");
+    PATH_TEST_EQ(p.string(), "//net");
+    PATH_TEST_EQ(p.relative_path().string(), "");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.parent_path().string(), "");
+    PATH_TEST_EQ(p.filename(), "//net");
+    PATH_TEST_EQ(p.root_name(), "//net");
+    PATH_TEST_EQ(p.root_directory(), "");
+    PATH_TEST_EQ(p.root_path().string(), "//net");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(p.has_root_name());
+    BOOST_TEST(!p.has_root_directory());
+    BOOST_TEST(!p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(!p.is_absolute());
+
+    p = q = path("//net/");
+    BOOST_TEST(p.relative_path().string() == "");
+    BOOST_TEST(p.parent_path().string() == "//net");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "/");
+    BOOST_TEST(p.root_name() == "//net");
+    BOOST_TEST(p.root_directory() == "/");
+    BOOST_TEST(p.root_path().string() == "//net/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(!p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    BOOST_TEST(p.is_absolute());
+
+    p = q = path("//net/foo");
+    BOOST_TEST(p.relative_path().string() == "foo");
+    BOOST_TEST(p.parent_path().string() == "//net/");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    BOOST_TEST(p.filename() == "foo");
+    BOOST_TEST(p.root_name() == "//net");
+    BOOST_TEST(p.root_directory() == "/");
+    BOOST_TEST(p.root_path().string() == "//net/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    BOOST_TEST(p.is_absolute());
+
+    p = q = path("//net///foo");
+    PATH_TEST_EQ(p.relative_path().string(), "foo");
+    PATH_TEST_EQ(p.parent_path().string(), "//net/");
+    PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+    PATH_TEST_EQ(p.filename(), "foo");
+    PATH_TEST_EQ(p.root_name(), "//net");
+    PATH_TEST_EQ(p.root_directory(), "/");
+    PATH_TEST_EQ(p.root_path().string(), "//net/");
+    BOOST_TEST(p.has_root_path());
+    BOOST_TEST(p.has_root_name());
+    BOOST_TEST(p.has_root_directory());
+    BOOST_TEST(p.has_relative_path());
+    BOOST_TEST(p.has_filename());
+    BOOST_TEST(p.has_parent_path());
+    BOOST_TEST(p.is_absolute());
+
+    //  ticket 2739, infinite recursion leading to stack overflow, was caused
+    //  by failure to handle this case correctly on Windows.
+    p = path(":");
+    PATH_TEST_EQ(p.parent_path().string(), "");
+    PATH_TEST_EQ(p.filename(), ":");
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(p.has_filename());
+
+    //  test some similar cases that both POSIX and Windows should handle identically
+    p = path("c:");
+    PATH_TEST_EQ(p.parent_path().string(), "");
+    PATH_TEST_EQ(p.filename(), "c:");
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(p.has_filename());
+    p = path("cc:");
+    PATH_TEST_EQ(p.parent_path().string(), "");
+    PATH_TEST_EQ(p.filename(), "cc:");
+    BOOST_TEST(!p.has_parent_path());
+    BOOST_TEST(p.has_filename());
+
+    //  Windows specific tests
+    if (platform == "Windows")
+    {
+
+      //p = q = L"\\\\?\\";
+      //BOOST_TEST(p.relative_path().string() == "");
+      //BOOST_TEST(p.parent_path().string() == "");
+      //PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      //BOOST_TEST(p.filename() == "");
+      //BOOST_TEST(p.stem() == "");
+      //BOOST_TEST(p.extension() == "");
+      //BOOST_TEST(p.root_name() == "");
+      //BOOST_TEST(p.root_directory() == "");
+      //BOOST_TEST(p.root_path().string() == "");
+      //BOOST_TEST(!p.has_root_path());
+      //BOOST_TEST(!p.has_root_name());
+      //BOOST_TEST(!p.has_root_directory());
+      //BOOST_TEST(!p.has_relative_path());
+      //BOOST_TEST(!p.has_filename());
+      //BOOST_TEST(!p.has_stem());
+      //BOOST_TEST(!p.has_extension());
+      //BOOST_TEST(!p.has_parent_path());
+      //BOOST_TEST(!p.is_absolute());
+
+      p = q = path("c:");
+      BOOST_TEST(p.relative_path().string() == "");
+      BOOST_TEST(p.parent_path().string() == "");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      BOOST_TEST(p.filename() == "c:");
+      BOOST_TEST(p.root_name() == "c:");
+      BOOST_TEST(p.root_directory() == "");
+      BOOST_TEST(p.root_path().string() == "c:");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(!p.has_root_directory());
+      BOOST_TEST(!p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(!p.has_parent_path());
+      BOOST_TEST(!p.is_absolute());
+
+      //p = q = path(L"\\\\?\\c:");
+      //BOOST_TEST(p.relative_path().string() == "");
+      //BOOST_TEST(p.parent_path().string() == "");
+      //PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      //BOOST_TEST(p.filename() == "c:");
+      //BOOST_TEST(p.root_name() == "c:");
+      //BOOST_TEST(p.root_directory() == "");
+      //BOOST_TEST(p.root_path().string() == "c:");
+      //BOOST_TEST(p.has_root_path());
+      //BOOST_TEST(p.has_root_name());
+      //BOOST_TEST(!p.has_root_directory());
+      //BOOST_TEST(!p.has_relative_path());
+      //BOOST_TEST(p.has_filename());
+      //BOOST_TEST(!p.has_parent_path());
+      //BOOST_TEST(!p.is_absolute());
+
+      p = q = path("c:foo");
+      BOOST_TEST(p.relative_path().string() == "foo");
+      BOOST_TEST(p.parent_path().string() == "c:");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      BOOST_TEST(p.filename() == "foo");
+      BOOST_TEST(p.root_name() == "c:");
+      BOOST_TEST(p.root_directory() == "");
+      BOOST_TEST(p.root_path().string() == "c:");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(!p.has_root_directory());
+      BOOST_TEST(p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(!p.is_absolute());
+
+      //p = q = path(L"\\\\?\\c:foo");
+      //BOOST_TEST(p.relative_path().string() == "foo");
+      //BOOST_TEST(p.parent_path().string() == "c:");
+      //PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      //BOOST_TEST(p.filename() == "foo");
+      //BOOST_TEST(p.root_name() == "c:");
+      //BOOST_TEST(p.root_directory() == "");
+      //BOOST_TEST(p.root_path().string() == "c:");
+      //BOOST_TEST(p.has_root_path());
+      //BOOST_TEST(p.has_root_name());
+      //BOOST_TEST(!p.has_root_directory());
+      //BOOST_TEST(p.has_relative_path());
+      //BOOST_TEST(p.has_filename());
+      //BOOST_TEST(p.has_parent_path());
+      //BOOST_TEST(!p.is_absolute());
+
+      p = q = path("c:/");
+      BOOST_TEST(p.relative_path().string() == "");
+      BOOST_TEST(p.parent_path().string() == "c:");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      BOOST_TEST(p.filename() == "/");
+      BOOST_TEST(p.root_name() == "c:");
+      BOOST_TEST(p.root_directory() == "/");
+      BOOST_TEST(p.root_path().string() == "c:/");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(p.has_root_directory());
+      BOOST_TEST(!p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(p.is_absolute());
+
+      p = q = path("c:..");
+      BOOST_TEST(p.relative_path().string() == "..");
+      BOOST_TEST(p.parent_path().string() == "c:");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      BOOST_TEST(p.filename() == "..");
+      BOOST_TEST(p.root_name() == "c:");
+      BOOST_TEST(p.root_directory() == "");
+      BOOST_TEST(p.root_path().string() == "c:");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(!p.has_root_directory());
+      BOOST_TEST(p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(!p.is_absolute());
+
+      p = q = path("c:/foo");
+      PATH_TEST_EQ(p.relative_path().string(), "foo");
+      PATH_TEST_EQ(p.parent_path().string(), "c:/");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      PATH_TEST_EQ(p.filename(), "foo");
+      PATH_TEST_EQ(p.root_name(), "c:");
+      PATH_TEST_EQ(p.root_directory(), "/");
+      PATH_TEST_EQ(p.root_path().string(), "c:/");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(p.has_root_directory());
+      BOOST_TEST(p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(p.is_absolute());
+
+      p = q = path("c://foo");
+      PATH_TEST_EQ(p.relative_path().string(), "foo");
+      PATH_TEST_EQ(p.parent_path().string(), "c:/");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      PATH_TEST_EQ(p.filename(), "foo");
+      PATH_TEST_EQ(p.root_name(), "c:");
+      PATH_TEST_EQ(p.root_directory(), "/");
+      PATH_TEST_EQ(p.root_path().string(), "c:/");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(p.has_root_directory());
+      BOOST_TEST(p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(p.is_absolute());
+
+      p = q = path("c:\\foo\\bar");
+      PATH_TEST_EQ(p.relative_path().string(), "foo\\bar");
+      PATH_TEST_EQ(p.parent_path().string(), "c:\\foo");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      PATH_TEST_EQ(p.filename(), "bar");
+      PATH_TEST_EQ(p.root_name(), "c:");
+      PATH_TEST_EQ(p.root_directory(), "\\");
+      PATH_TEST_EQ(p.root_path().string(), "c:\\");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(p.has_root_directory());
+      BOOST_TEST(p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(p.is_absolute());
+
+      p = q = path("prn:");
+      BOOST_TEST(p.relative_path().string() == "");
+      BOOST_TEST(p.parent_path().string() == "");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      BOOST_TEST(p.filename() == "prn:");
+      BOOST_TEST(p.root_name() == "prn:");
+      BOOST_TEST(p.root_directory() == "");
+      BOOST_TEST(p.root_path().string() == "prn:");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(!p.has_root_directory());
+      BOOST_TEST(!p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(!p.has_parent_path());
+      BOOST_TEST(!p.is_absolute());
+
+      p = q = path("\\\\net\\\\\\foo");
+      PATH_TEST_EQ(p.relative_path().string(), "foo");
+      PATH_TEST_EQ(p.parent_path().string(), "\\\\net\\");
+      PATH_TEST_EQ(q.remove_filename().string(), p.parent_path().string());
+      PATH_TEST_EQ(p.filename(), "foo");
+      PATH_TEST_EQ(p.root_name(), "\\\\net");
+      PATH_TEST_EQ(p.root_directory(), "\\");
+      PATH_TEST_EQ(p.root_path().string(), "\\\\net\\");
+      BOOST_TEST(p.has_root_path());
+      BOOST_TEST(p.has_root_name());
+      BOOST_TEST(p.has_root_directory());
+      BOOST_TEST(p.has_relative_path());
+      BOOST_TEST(p.has_filename());
+      BOOST_TEST(p.has_parent_path());
+      BOOST_TEST(p.is_absolute());
+    } // Windows
+
+    else
+    { // POSIX
+      PATH_TEST_EQ(path("/foo/bar/"), "/foo/bar/");
+      PATH_TEST_EQ(path("//foo//bar//"), "//foo//bar//");
+      PATH_TEST_EQ(path("///foo///bar///"), "///foo///bar///");
+
+      p = path("/usr/local/bin:/usr/bin:/bin");
+      BOOST_TEST(p.string() == "/usr/local/bin:/usr/bin:/bin");
+    } // POSIX
+  }
+
+ //  composition_tests  ----------------------------------------------------------------//
+
+  void composition_tests()
+  {
+    std::cout << "composition_tests..." << std::endl;
+
+  }
+
+ //  construction_tests  ---------------------------------------------------------------//
+
+  void construction_tests()
+  {
+    std::cout << "construction_tests..." << std::endl;
+
+    PATH_TEST_EQ("", "");
+
+    PATH_TEST_EQ("foo", "foo");
+    PATH_TEST_EQ("f", "f");
+
+    PATH_TEST_EQ("foo/", "foo/");
+    PATH_TEST_EQ("f/", "f/");
+    PATH_TEST_EQ("foo/..", "foo/..");
+    PATH_TEST_EQ("foo/../", "foo/../");
+    PATH_TEST_EQ("foo/bar/../..", "foo/bar/../..");
+    PATH_TEST_EQ("foo/bar/../../", "foo/bar/../../");
+    PATH_TEST_EQ("/", "/");
+    PATH_TEST_EQ("/f", "/f");
+
+    PATH_TEST_EQ("/foo", "/foo");
+    PATH_TEST_EQ("/foo/bar/", "/foo/bar/");
+    PATH_TEST_EQ("//foo//bar//", "//foo//bar//");
+    PATH_TEST_EQ("///foo///bar///", "///foo///bar///");
+    PATH_TEST_EQ("\\/foo\\/bar\\/", "\\/foo\\/bar\\/");
+    PATH_TEST_EQ("\\//foo\\//bar\\//", "\\//foo\\//bar\\//");
+
+    if (platform == "Windows")
+    {
+      PATH_TEST_EQ(path("c:") / "foo", "c:foo");
+      PATH_TEST_EQ(path("c:") / "/foo", "c:/foo");
+
+      PATH_TEST_EQ("\\foo\\bar\\", "\\foo\\bar\\");
+      PATH_TEST_EQ("\\\\foo\\\\bar\\\\", "\\\\foo\\\\bar\\\\");
+      PATH_TEST_EQ("\\\\\\foo\\\\\\bar\\\\\\", "\\\\\\foo\\\\\\bar\\\\\\");
+
+      PATH_TEST_EQ("\\", "\\");
+      PATH_TEST_EQ("\\f", "\\f");
+      PATH_TEST_EQ("\\foo", "\\foo");
+      PATH_TEST_EQ("foo\\bar", "foo\\bar");
+      PATH_TEST_EQ("foo bar", "foo bar");
+      PATH_TEST_EQ("c:", "c:");
+      PATH_TEST_EQ("c:/", "c:/");
+      PATH_TEST_EQ("c:.", "c:.");
+      PATH_TEST_EQ("c:./foo", "c:./foo");
+      PATH_TEST_EQ("c:.\\foo", "c:.\\foo");
+      PATH_TEST_EQ("c:..", "c:..");
+      PATH_TEST_EQ("c:/.", "c:/.");
+      PATH_TEST_EQ("c:/..", "c:/..");
+      PATH_TEST_EQ("c:/../", "c:/../");
+      PATH_TEST_EQ("c:\\..\\", "c:\\..\\");
+      PATH_TEST_EQ("c:/../..", "c:/../..");
+      PATH_TEST_EQ("c:/../foo", "c:/../foo");
+      PATH_TEST_EQ("c:\\..\\foo", "c:\\..\\foo");
+      PATH_TEST_EQ("c:../foo", "c:../foo");
+      PATH_TEST_EQ("c:..\\foo", "c:..\\foo");
+      PATH_TEST_EQ("c:/../../foo", "c:/../../foo");
+      PATH_TEST_EQ("c:\\..\\..\\foo", "c:\\..\\..\\foo");
+      PATH_TEST_EQ("c:foo/..", "c:foo/..");
+      PATH_TEST_EQ("c:/foo/..", "c:/foo/..");
+      PATH_TEST_EQ("c:/..foo", "c:/..foo");
+      PATH_TEST_EQ("c:foo", "c:foo");
+      PATH_TEST_EQ("c:/foo", "c:/foo");
+      PATH_TEST_EQ("\\\\netname", "\\\\netname");
+      PATH_TEST_EQ("\\\\netname\\", "\\\\netname\\");
+      PATH_TEST_EQ("\\\\netname\\foo", "\\\\netname\\foo");
+      PATH_TEST_EQ("c:/foo", "c:/foo");
+      PATH_TEST_EQ("prn:", "prn:");
+    }
+    else
+    {
+    }
+
+    PATH_TEST_EQ("foo/bar", "foo/bar");
+    PATH_TEST_EQ("a/b", "a/b");  // probe for length effects
+    PATH_TEST_EQ("..", "..");
+    PATH_TEST_EQ("../..", "../..");
+    PATH_TEST_EQ("/..", "/..");
+    PATH_TEST_EQ("/../..", "/../..");
+    PATH_TEST_EQ("../foo", "../foo");
+    PATH_TEST_EQ("foo/..", "foo/..");
+    PATH_TEST_EQ("foo/..bar", "foo/..bar");
+    PATH_TEST_EQ("../f", "../f");
+    PATH_TEST_EQ("/../f", "/../f");
+    PATH_TEST_EQ("f/..", "f/..");
+    PATH_TEST_EQ("foo/../..", "foo/../..");
+    PATH_TEST_EQ("foo/../../..", "foo/../../..");
+    PATH_TEST_EQ("foo/../bar", "foo/../bar");
+    PATH_TEST_EQ("foo/bar/..", "foo/bar/..");
+    PATH_TEST_EQ("foo/bar/../..", "foo/bar/../..");
+    PATH_TEST_EQ("foo/bar/../blah", "foo/bar/../blah");
+    PATH_TEST_EQ("f/../b", "f/../b");
+    PATH_TEST_EQ("f/b/..", "f/b/..");
+    PATH_TEST_EQ("f/b/../a", "f/b/../a");
+    PATH_TEST_EQ("foo/bar/blah/../..", "foo/bar/blah/../..");
+    PATH_TEST_EQ("foo/bar/blah/../../bletch", "foo/bar/blah/../../bletch");
+    PATH_TEST_EQ("...", "...");
+    PATH_TEST_EQ("....", "....");
+    PATH_TEST_EQ("foo/...", "foo/...");
+    PATH_TEST_EQ("abc.", "abc.");
+    PATH_TEST_EQ("abc..", "abc..");
+    PATH_TEST_EQ("foo/abc.", "foo/abc.");
+    PATH_TEST_EQ("foo/abc..", "foo/abc..");
+
+    PATH_TEST_EQ(".abc", ".abc");
+    PATH_TEST_EQ("a.c", "a.c");
+    PATH_TEST_EQ("..abc", "..abc");
+    PATH_TEST_EQ("a..c", "a..c");
+    PATH_TEST_EQ("foo/.abc", "foo/.abc");
+    PATH_TEST_EQ("foo/a.c", "foo/a.c");
+    PATH_TEST_EQ("foo/..abc", "foo/..abc");
+    PATH_TEST_EQ("foo/a..c", "foo/a..c");
+
+    PATH_TEST_EQ(".", ".");
+    PATH_TEST_EQ("./foo", "./foo");
+    PATH_TEST_EQ("./..", "./..");
+    PATH_TEST_EQ("./../foo", "./../foo");
+    PATH_TEST_EQ("foo/.", "foo/.");
+    PATH_TEST_EQ("../.", "../.");
+    PATH_TEST_EQ("./.", "./.");
+    PATH_TEST_EQ("././.", "././.");
+    PATH_TEST_EQ("./foo/.", "./foo/.");
+    PATH_TEST_EQ("foo/./bar", "foo/./bar");
+    PATH_TEST_EQ("foo/./.", "foo/./.");
+    PATH_TEST_EQ("foo/./..", "foo/./..");
+    PATH_TEST_EQ("foo/./../bar", "foo/./../bar");
+    PATH_TEST_EQ("foo/../.", "foo/../.");
+    PATH_TEST_EQ("././..", "././..");
+    PATH_TEST_EQ("./../.", "./../.");
+    PATH_TEST_EQ(".././.", ".././.");
+  }
+
+  //  append_tests  --------------------------------------------------------------------//
+
+  void append_test_aux(const path & p, const std::string & s, const std::string & expect)
+  {
+    PATH_TEST_EQ((p / path(s)).string(), expect);
+    PATH_TEST_EQ((p / s.c_str()).string(), expect);
+    PATH_TEST_EQ((p / s).string(), expect);
+    path x(p);
+    x.append(s.begin(), s.end());
+    PATH_TEST_EQ(x.string(), expect);
+  }
+
+  void append_tests()
+  {
+    std::cout << "append_tests..." << std::endl;
+
+    // There are many control paths to be exercised, since empty paths and arguments,
+    // paths with trailing separators, arguments with leading separators, with or without
+    // other characters being present, are all separate cases that need to be tested.
+    // Furthermore, some of the code to be tested is specific to argument categories,
+    // so that results in further permutations to be tested.
+
+    //// code to generate test cases
+    ////
+    //// expected results must be checked by hand
+    //// "foo\bar" expected result must be edited by hand and moved for Windows/POSIX
+    ////
+    //const char* x[]    = { "", "/", "foo", "foo/" };
+    //const char* y[] = { "", "/", "bar", "/bar" };
+
+    //for (int i = 0; i < sizeof(x)/sizeof(char*); ++i)
+    //  for (int j = 0; j < sizeof(y)/sizeof(char*); ++j)
+    //  {
+    //    std::cout << "\n    PATH_TEST_EQ(path(\"" << x[i] << "\") / \"" << y[j] << "\", \""
+    //              << path(x[i]) / y[j] << "\");\n";
+    //    std::cout << "    append_test_aux(\"" << x[i] << "\", \"" << y[j] << "\", \""
+    //              << path(x[i]) / y[j] << "\");\n";
+    //  }
+
+    PATH_TEST_EQ(path("") / "", "");
+    append_test_aux("", "", "");
+
+    PATH_TEST_EQ(path("") / "/", "/");
+    append_test_aux("", "/", "/");
+
+    PATH_TEST_EQ(path("") / "bar", "bar");
+    append_test_aux("", "bar", "bar");
+
+    PATH_TEST_EQ(path("") / "/bar", "/bar");
+    append_test_aux("", "/bar", "/bar");
+
+    PATH_TEST_EQ(path("/") / "", "/");
+    append_test_aux("/", "", "/");
+
+    PATH_TEST_EQ(path("/") / "/", "//");
+    append_test_aux("/", "/", "//");
+
+    PATH_TEST_EQ(path("/") / "bar", "/bar");
+    append_test_aux("/", "bar", "/bar");
+
+    PATH_TEST_EQ(path("/") / "/bar", "//bar");
+    append_test_aux("/", "/bar", "//bar");
+
+    PATH_TEST_EQ(path("foo") / "", "foo");
+    append_test_aux("foo", "", "foo");
+
+    PATH_TEST_EQ(path("foo") / "/", "foo/");
+    append_test_aux("foo", "/", "foo/");
+
+    PATH_TEST_EQ(path("foo") / "/bar", "foo/bar");
+    append_test_aux("foo", "/bar", "foo/bar");
+
+    PATH_TEST_EQ(path("foo/") / "", "foo/");
+    append_test_aux("foo/", "", "foo/");
+
+    PATH_TEST_EQ(path("foo/") / "/", "foo//");
+    append_test_aux("foo/", "/", "foo//");
+
+    PATH_TEST_EQ(path("foo/") / "bar", "foo/bar");
+    append_test_aux("foo/", "bar", "foo/bar");
+
+
+    if (platform == "Windows")
+    {
+      PATH_TEST_EQ(path("foo") / "bar", "foo\\bar");
+      append_test_aux("foo", "bar", "foo\\bar");
+
+      PATH_TEST_EQ(path("foo\\") / "\\bar", "foo\\\\bar");
+      append_test_aux("foo\\", "\\bar", "foo\\\\bar");
+
+      // hand created test case specific to Windows
+      PATH_TEST_EQ(path("c:") / "bar", "c:bar");
+      append_test_aux("c:", "bar", "c:bar");
+    }
+    else
+    {
+      PATH_TEST_EQ(path("foo") / "bar", "foo/bar");
+      append_test_aux("foo", "bar", "foo/bar");
+    }
+
+    // ticket #6819
+    union
+    {
+      char a[1];
+      char b[3];
+    } u;
+
+    u.b[0] = 'a';
+    u.b[1] = 'b';
+    u.b[2] = '\0';
+
+    path p6819;
+    p6819 /= u.a;
+    BOOST_TEST_EQ(p6819, path("ab"));
+  }
+
+//  self_assign_and_append_tests  ------------------------------------------------------//
+
+  void self_assign_and_append_tests()
+  {
+    std::cout << "self_assign_and_append_tests..." << std::endl;
+
+    path p;
+
+    p = "snafubar";
+    PATH_TEST_EQ(p = p, "snafubar");
+
+    p = "snafubar";
+    p = p.c_str();
+    PATH_TEST_EQ(p, "snafubar");
+
+    p = "snafubar";
+    p.assign(p.c_str(), path::codecvt());
+    PATH_TEST_EQ(p, "snafubar");
+
+    p = "snafubar";
+    PATH_TEST_EQ(p = p.c_str()+5, "bar");
+
+    p = "snafubar";
+    PATH_TEST_EQ(p.assign(p.c_str() + 5, p.c_str() + 7), "ba");
+
+    p = "snafubar";
+    p /= p;
+    PATH_TEST_EQ(p, "snafubar" BOOST_DIR_SEP "snafubar");
+
+    p = "snafubar";
+    p /= p.c_str();
+    PATH_TEST_EQ(p, "snafubar" BOOST_DIR_SEP "snafubar");
+
+    p = "snafubar";
+    p.append(p.c_str(), path::codecvt());
+    PATH_TEST_EQ(p, "snafubar" BOOST_DIR_SEP "snafubar");
+
+    p = "snafubar";
+    PATH_TEST_EQ(p.append(p.c_str() + 5, p.c_str() + 7), "snafubar" BOOST_DIR_SEP "ba");
+  }
+
+
+  //  name_function_tests  -------------------------------------------------------------//
+
+  void name_function_tests()
+  {
+    std::cout << "name_function_tests..." << std::endl;
+
+    BOOST_TEST(fs::portable_posix_name(std::string("x")));
+    BOOST_TEST(fs::windows_name(std::string("x")));
+    BOOST_TEST(fs::portable_name(std::string("x")));
+    BOOST_TEST(fs::portable_directory_name(std::string("x")));
+    BOOST_TEST(fs::portable_file_name(std::string("x")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string(".")));
+    BOOST_TEST(fs::windows_name(std::string(".")));
+    BOOST_TEST(fs::portable_name(std::string(".")));
+    BOOST_TEST(fs::portable_directory_name(std::string(".")));
+    BOOST_TEST(!fs::portable_file_name(std::string(".")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string("..")));
+    BOOST_TEST(fs::windows_name(std::string("..")));
+    BOOST_TEST(fs::portable_name(std::string("..")));
+    BOOST_TEST(fs::portable_directory_name(std::string("..")));
+    BOOST_TEST(!fs::portable_file_name(std::string("..")));
+
+    BOOST_TEST(!fs::native(std::string("")));
+    BOOST_TEST(!fs::portable_posix_name(std::string("")));
+    BOOST_TEST(!fs::windows_name(std::string("")));
+    BOOST_TEST(!fs::portable_name(std::string("")));
+    BOOST_TEST(!fs::portable_directory_name(std::string("")));
+    BOOST_TEST(!fs::portable_file_name(std::string("")));
+
+    BOOST_TEST(!fs::native(std::string(" ")));
+    BOOST_TEST(!fs::portable_posix_name(std::string(" ")));
+    BOOST_TEST(!fs::windows_name(std::string(" ")));
+    BOOST_TEST(!fs::portable_name(std::string(" ")));
+    BOOST_TEST(!fs::portable_directory_name(std::string(" ")));
+    BOOST_TEST(!fs::portable_file_name(std::string(" ")));
+
+    BOOST_TEST(!fs::portable_posix_name(std::string(":")));
+    BOOST_TEST(!fs::windows_name(std::string(":")));
+    BOOST_TEST(!fs::portable_name(std::string(":")));
+    BOOST_TEST(!fs::portable_directory_name(std::string(":")));
+    BOOST_TEST(!fs::portable_file_name(std::string(":")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string("-")));
+    BOOST_TEST(fs::windows_name(std::string("-")));
+    BOOST_TEST(!fs::portable_name(std::string("-")));
+    BOOST_TEST(!fs::portable_directory_name(std::string("-")));
+    BOOST_TEST(!fs::portable_file_name(std::string("-")));
+
+    BOOST_TEST(!fs::portable_posix_name(std::string("foo bar")));
+    BOOST_TEST(fs::windows_name(std::string("foo bar")));
+    BOOST_TEST(!fs::windows_name(std::string(" bar")));
+    BOOST_TEST(!fs::windows_name(std::string("foo ")));
+    BOOST_TEST(!fs::portable_name(std::string("foo bar")));
+    BOOST_TEST(!fs::portable_directory_name(std::string("foo bar")));
+    BOOST_TEST(!fs::portable_file_name(std::string("foo bar")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string("foo.bar")));
+    BOOST_TEST(fs::windows_name(std::string("foo.bar")));
+    BOOST_TEST(fs::portable_name(std::string("foo.bar")));
+    BOOST_TEST(!fs::portable_directory_name(std::string("foo.bar")));
+    BOOST_TEST(fs::portable_file_name(std::string("foo.bar")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string("foo.barf")));
+    BOOST_TEST(fs::windows_name(std::string("foo.barf")));
+    BOOST_TEST(fs::portable_name(std::string("foo.barf")));
+    BOOST_TEST(!fs::portable_directory_name(std::string("foo.barf")));
+    BOOST_TEST(!fs::portable_file_name(std::string("foo.barf")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string(".foo")));
+    BOOST_TEST(fs::windows_name(std::string(".foo")));
+    BOOST_TEST(!fs::portable_name(std::string(".foo")));
+    BOOST_TEST(!fs::portable_directory_name(std::string(".foo")));
+    BOOST_TEST(!fs::portable_file_name(std::string(".foo")));
+
+    BOOST_TEST(fs::portable_posix_name(std::string("foo.")));
+    BOOST_TEST(!fs::windows_name(std::string("foo.")));
+    BOOST_TEST(!fs::portable_name(std::string("foo.")));
+    BOOST_TEST(!fs::portable_directory_name(std::string("foo.")));
+    BOOST_TEST(!fs::portable_file_name(std::string("foo.")));
+  }
+
+  //  replace_extension_tests  ---------------------------------------------------------//
+
+  void replace_extension_tests()
+  {
+    std::cout << "replace_extension_tests..." << std::endl;
+
+    BOOST_TEST(path().replace_extension().empty());
+    BOOST_TEST(path().replace_extension("a") == ".a");
+    BOOST_TEST(path().replace_extension("a.") == ".a.");
+    BOOST_TEST(path().replace_extension(".a") == ".a");
+    BOOST_TEST(path().replace_extension("a.txt") == ".a.txt");
+    // see the rationale in html docs for explanation why this works:
+    BOOST_TEST(path().replace_extension(".txt") == ".txt");
+
+    BOOST_TEST(path("a.txt").replace_extension() == "a");
+    BOOST_TEST(path("a.txt").replace_extension("") == "a");
+    BOOST_TEST(path("a.txt").replace_extension(".") == "a.");
+    BOOST_TEST(path("a.txt").replace_extension(".tex") == "a.tex");
+    BOOST_TEST(path("a.txt").replace_extension("tex") == "a.tex");
+    BOOST_TEST(path("a.").replace_extension(".tex") == "a.tex");
+    BOOST_TEST(path("a.").replace_extension("tex") == "a.tex");
+    BOOST_TEST(path("a").replace_extension(".txt") == "a.txt");
+    BOOST_TEST(path("a").replace_extension("txt") == "a.txt");
+    BOOST_TEST(path("a.b.txt").replace_extension(".tex") == "a.b.tex");
+    BOOST_TEST(path("a.b.txt").replace_extension("tex") == "a.b.tex");
+    BOOST_TEST(path("a/b").replace_extension(".c") == "a/b.c");
+    PATH_TEST_EQ(path("a.txt/b").replace_extension(".c"), "a.txt/b.c"); // ticket 4702
+    BOOST_TEST(path("foo.txt").replace_extension("exe") == "foo.exe");  // ticket 5118
+    BOOST_TEST(path("foo.txt").replace_extension(".tar.bz2")
+                                                    == "foo.tar.bz2");  // ticket 5118
+  }
+
+  //  make_preferred_tests  ------------------------------------------------------------//
+
+  void make_preferred_tests()
+  {
+    std::cout << "make_preferred_tests..." << std::endl;
+
+    if (platform == "Windows")
+    {
+      BOOST_TEST(path("//abc\\def/ghi").make_preferred().native()
+        == path("\\\\abc\\def\\ghi").native());
+    }
+    else
+    {
+      BOOST_TEST(path("//abc\\def/ghi").make_preferred().native()
+        == path("//abc\\def/ghi").native());
+    }
+  }
+
+  //  lexically_normal_tests  ----------------------------------------------------------//
+
+  void lexically_normal_tests()
+  {
+    std::cout << "lexically_normal_tests..." << std::endl;
+
+    //  Note: lexically_lexically_normal() uses /= to build up some results, so these results will
+    //  have the platform's preferred separator. Since that is immaterial to the correct
+    //  functioning of lexically_lexically_normal(), the test results are converted to generic form,
+    //  and the expected results are also given in generic form. Otherwise many of the
+    //  tests would incorrectly be reported as failing on Windows.
+
+    PATH_TEST_EQ(path("").lexically_normal().generic_path(), "");
+    PATH_TEST_EQ(path("/").lexically_normal().generic_path(), "/");
+    PATH_TEST_EQ(path("//").lexically_normal().generic_path(), "//");
+    PATH_TEST_EQ(path("///").lexically_normal().generic_path(), "/");
+    PATH_TEST_EQ(path("f").lexically_normal().generic_path(), "f");
+    PATH_TEST_EQ(path("foo").lexically_normal().generic_path(), "foo");
+    PATH_TEST_EQ(path("foo/").lexically_normal().generic_path(), "foo/.");
+    PATH_TEST_EQ(path("f/").lexically_normal().generic_path(), "f/.");
+    PATH_TEST_EQ(path("/foo").lexically_normal().generic_path(), "/foo");
+    PATH_TEST_EQ(path("foo/bar").lexically_normal().generic_path(), "foo/bar");
+    PATH_TEST_EQ(path("..").lexically_normal().generic_path(), "..");
+    PATH_TEST_EQ(path("../..").lexically_normal().generic_path(), "../..");
+    PATH_TEST_EQ(path("/..").lexically_normal().generic_path(), "/..");
+    PATH_TEST_EQ(path("/../..").lexically_normal().generic_path(), "/../..");
+    PATH_TEST_EQ(path("../foo").lexically_normal().generic_path(), "../foo");
+    PATH_TEST_EQ(path("foo/..").lexically_normal().generic_path(), ".");
+    PATH_TEST_EQ(path("foo/../").lexically_normal().generic_path(), "./.");
+    PATH_TEST_EQ((path("foo") / "..").lexically_normal().generic_path() , ".");
+    PATH_TEST_EQ(path("foo/...").lexically_normal().generic_path(), "foo/...");
+    PATH_TEST_EQ(path("foo/.../").lexically_normal().generic_path(), "foo/.../.");
+    PATH_TEST_EQ(path("foo/..bar").lexically_normal().generic_path(), "foo/..bar");
+    PATH_TEST_EQ(path("../f").lexically_normal().generic_path(), "../f");
+    PATH_TEST_EQ(path("/../f").lexically_normal().generic_path(), "/../f");
+    PATH_TEST_EQ(path("f/..").lexically_normal().generic_path(), ".");
+    PATH_TEST_EQ((path("f") / "..").lexically_normal().generic_path() , ".");
+    PATH_TEST_EQ(path("foo/../..").lexically_normal().generic_path(), "..");
+    PATH_TEST_EQ(path("foo/../../").lexically_normal().generic_path(), "../.");
+    PATH_TEST_EQ(path("foo/../../..").lexically_normal().generic_path(), "../..");
+    PATH_TEST_EQ(path("foo/../../../").lexically_normal().generic_path(), "../../.");
+    PATH_TEST_EQ(path("foo/../bar").lexically_normal().generic_path(), "bar");
+    PATH_TEST_EQ(path("foo/../bar/").lexically_normal().generic_path(), "bar/.");
+    PATH_TEST_EQ(path("foo/bar/..").lexically_normal().generic_path(), "foo");
+    PATH_TEST_EQ(path("foo/./bar/..").lexically_normal().generic_path(), "foo");
+    std::cout << path("foo/./bar/..").lexically_normal() << std::endl;  // outputs "foo"
+    PATH_TEST_EQ(path("foo/bar/../").lexically_normal().generic_path(), "foo/.");
+    PATH_TEST_EQ(path("foo/./bar/../").lexically_normal().generic_path(), "foo/.");
+    std::cout << path("foo/./bar/../").lexically_normal() << std::endl;  // POSIX: "foo/.", Windows: "foo\."
+    PATH_TEST_EQ(path("foo/bar/../..").lexically_normal().generic_path(), ".");
+    PATH_TEST_EQ(path("foo/bar/../../").lexically_normal().generic_path(), "./.");
+    PATH_TEST_EQ(path("foo/bar/../blah").lexically_normal().generic_path(), "foo/blah");
+    PATH_TEST_EQ(path("f/../b").lexically_normal().generic_path(), "b");
+    PATH_TEST_EQ(path("f/b/..").lexically_normal().generic_path(), "f");
+    PATH_TEST_EQ(path("f/b/../").lexically_normal().generic_path(), "f/.");
+    PATH_TEST_EQ(path("f/b/../a").lexically_normal().generic_path(), "f/a");
+    PATH_TEST_EQ(path("foo/bar/blah/../..").lexically_normal().generic_path(), "foo");
+    PATH_TEST_EQ(path("foo/bar/blah/../../bletch").lexically_normal().generic_path(), "foo/bletch");
+    PATH_TEST_EQ(path("//net").lexically_normal().generic_path(), "//net");
+    PATH_TEST_EQ(path("//net/").lexically_normal().generic_path(), "//net/");
+    PATH_TEST_EQ(path("//..net").lexically_normal().generic_path(), "//..net");
+    PATH_TEST_EQ(path("//net/..").lexically_normal().generic_path(), "//net/..");
+    PATH_TEST_EQ(path("//net/foo").lexically_normal().generic_path(), "//net/foo");
+    PATH_TEST_EQ(path("//net/foo/").lexically_normal().generic_path(), "//net/foo/.");
+    PATH_TEST_EQ(path("//net/foo/..").lexically_normal().generic_path(), "//net/");
+    PATH_TEST_EQ(path("//net/foo/../").lexically_normal().generic_path(), "//net/.");
+
+    PATH_TEST_EQ(path("/net/foo/bar").lexically_normal().generic_path(), "/net/foo/bar");
+    PATH_TEST_EQ(path("/net/foo/bar/").lexically_normal().generic_path(), "/net/foo/bar/.");
+    PATH_TEST_EQ(path("/net/foo/..").lexically_normal().generic_path(), "/net");
+    PATH_TEST_EQ(path("/net/foo/../").lexically_normal().generic_path(), "/net/.");
+
+    PATH_TEST_EQ(path("//net//foo//bar").lexically_normal().generic_path(), "//net/foo/bar");
+    PATH_TEST_EQ(path("//net//foo//bar//").lexically_normal().generic_path(), "//net/foo/bar/.");
+    PATH_TEST_EQ(path("//net//foo//..").lexically_normal().generic_path(), "//net/");
+    PATH_TEST_EQ(path("//net//foo//..//").lexically_normal().generic_path(), "//net/.");
+
+    PATH_TEST_EQ(path("///net///foo///bar").lexically_normal().generic_path(), "/net/foo/bar");
+    PATH_TEST_EQ(path("///net///foo///bar///").lexically_normal().generic_path(), "/net/foo/bar/.");
+    PATH_TEST_EQ(path("///net///foo///..").lexically_normal().generic_path(), "/net");
+    PATH_TEST_EQ(path("///net///foo///..///").lexically_normal().generic_path(), "/net/.");
+
+    if (platform == "Windows")
+    {
+      PATH_TEST_EQ(path("c:..").lexically_normal().generic_path(), "c:..");
+      PATH_TEST_EQ(path("c:foo/..").lexically_normal().generic_path(), "c:");
+
+      PATH_TEST_EQ(path("c:foo/../").lexically_normal().generic_path(), "c:.");
+
+      PATH_TEST_EQ(path("c:/foo/..").lexically_normal().generic_path(), "c:/");
+      PATH_TEST_EQ(path("c:/foo/../").lexically_normal().generic_path(), "c:/.");
+      PATH_TEST_EQ(path("c:/..").lexically_normal().generic_path(), "c:/..");
+      PATH_TEST_EQ(path("c:/../").lexically_normal().generic_path(), "c:/../.");
+      PATH_TEST_EQ(path("c:/../..").lexically_normal().generic_path(), "c:/../..");
+      PATH_TEST_EQ(path("c:/../../").lexically_normal().generic_path(), "c:/../../.");
+      PATH_TEST_EQ(path("c:/../foo").lexically_normal().generic_path(), "c:/../foo");
+      PATH_TEST_EQ(path("c:/../foo/").lexically_normal().generic_path(), "c:/../foo/.");
+      PATH_TEST_EQ(path("c:/../../foo").lexically_normal().generic_path(), "c:/../../foo");
+      PATH_TEST_EQ(path("c:/../../foo/").lexically_normal().generic_path(), "c:/../../foo/.");
+      PATH_TEST_EQ(path("c:/..foo").lexically_normal().generic_path(), "c:/..foo");
+    }
+    else // POSIX
+    {
+      PATH_TEST_EQ(path("c:..").lexically_normal(), "c:..");
+      PATH_TEST_EQ(path("c:foo/..").lexically_normal(), ".");
+      PATH_TEST_EQ(path("c:foo/../").lexically_normal(), "./.");
+      PATH_TEST_EQ(path("c:/foo/..").lexically_normal(), "c:");
+      PATH_TEST_EQ(path("c:/foo/../").lexically_normal(), "c:/.");
+      PATH_TEST_EQ(path("c:/..").lexically_normal(), ".");
+      PATH_TEST_EQ(path("c:/../").lexically_normal(), "./.");
+      PATH_TEST_EQ(path("c:/../..").lexically_normal(), "..");
+      PATH_TEST_EQ(path("c:/../../").lexically_normal(), "../.");
+      PATH_TEST_EQ(path("c:/../foo").lexically_normal(), "foo");
+      PATH_TEST_EQ(path("c:/../foo/").lexically_normal(), "foo/.");
+      PATH_TEST_EQ(path("c:/../../foo").lexically_normal(), "../foo");
+      PATH_TEST_EQ(path("c:/../../foo/").lexically_normal(), "../foo/.");
+      PATH_TEST_EQ(path("c:/..foo").lexically_normal(), "c:/..foo");
+    }
+  }
+
+  inline void odr_use(const path::value_type& c)
+  {
+    static const path::value_type dummy = '\0';
+    BOOST_TEST(&c != &dummy);
+  }
+
+} // unnamed namespace
+
+static boost::filesystem::path ticket_6737 = "FilePath";  // #6737 reported this crashed
+                                                          // on VC++ debug mode build
+const boost::filesystem::path ticket_6690("test");  // #6690 another V++ static init crash
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                     main                                             //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+int cpp_main(int, char*[])
+{
+  // The choice of platform is make at runtime rather than compile-time
+  // so that compile errors for all platforms will be detected even though
+  // only the current platform is runtime tested.
+  platform = (platform == "Win32" || platform == "Win64" || platform == "Cygwin")
+               ? "Windows"
+               : "POSIX";
+  std::cout << "Platform is " << platform << '\n';
+
+  BOOST_TEST(p1.string() != p3.string());
+  p3 = p2;
+  BOOST_TEST(p1.string() == p3.string());
+
+  path p04("foobar");
+  BOOST_TEST(p04.string() == "foobar");
+  p04 = p04; // self-assignment
+  BOOST_TEST(p04.string() == "foobar");
+
+  construction_tests();
+  append_tests();
+  self_assign_and_append_tests();
+  overload_tests();
+  query_and_decomposition_tests();
+  composition_tests();
+  iterator_tests();
+  non_member_tests();
+  exception_tests();
+  name_function_tests();
+  replace_extension_tests();
+  make_preferred_tests();
+  lexically_normal_tests();
+
+  // verify deprecated names still available
+
+# ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+
+  p1.branch_path();
+  p1.leaf();
+  path p_remove_leaf;
+  p_remove_leaf.remove_leaf();
+
+# endif
+
+  std::string s1("//:somestring");  // this used to be treated specially
+
+  // check the path member templates
+  p5.assign(s1.begin(), s1.end());
+
+  PATH_TEST_EQ(p5.string(), "//:somestring");
+  p5 = s1;
+  PATH_TEST_EQ(p5.string(), "//:somestring");
+
+  // this code, courtesy of David Whetstone, detects a now fixed bug that
+  // derefereced the end iterator (assuming debug build with checked itors)
+  std::vector<char> v1;
+  p5.assign(v1.begin(), v1.end());
+  std::string s2(v1.begin(), v1.end());
+  PATH_TEST_EQ(p5.string(), s2);
+  p5.assign(s1.begin(), s1.begin() + 1);
+  PATH_TEST_EQ(p5.string(), "/");
+
+  BOOST_TEST(p1 != p4);
+  BOOST_TEST(p1.string() == p2.string());
+  BOOST_TEST(p1.string() == p3.string());
+  BOOST_TEST(path("foo").filename() == "foo");
+  BOOST_TEST(path("foo").parent_path().string() == "");
+  BOOST_TEST(p1.filename() == "fum");
+  BOOST_TEST(p1.parent_path().string() == "fe/fi/fo");
+  BOOST_TEST(path("").empty() == true);
+  BOOST_TEST(path("foo").empty() == false);
+
+  // inserter and extractor tests
+# if !defined(BOOST_MSVC) || BOOST_MSVC > 1300 // bypass VC++ 7.0 and earlier
+  std::cout << "\nInserter and extractor test...";
+  std::stringstream ss;
+  ss << fs::path("foo/bar") << std::endl;
+  fs::path round_trip;
+  ss >> round_trip;
+  BOOST_TEST(round_trip.string() == "foo/bar");
+  std::cout << round_trip.string() << "..." << round_trip << " complete\n";
+# endif
+
+  // Check that path constants have definitions
+  // https://svn.boost.org/trac10/ticket/12759
+  odr_use(path::separator);
+  odr_use(path::preferred_separator);
+  odr_use(path::dot);
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/path_times.cpp b/src/boost/libs/filesystem/test/path_times.cpp
new file mode 100644
index 00000000..1da54b29
--- /dev/null
+++ b/src/boost/libs/filesystem/test/path_times.cpp
@@ -0,0 +1,103 @@
+//  Boost Filesystem path_times.cpp  ---------------------------------------------------//
+
+//  Copyright Beman Dawes 2013
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#include <boost/config/warning_disable.hpp>
+
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+#  define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+#  define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/timer/timer.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/cstdint.hpp>
+
+#include <boost/config.hpp>
+# if defined( BOOST_NO_STD_WSTRING )
+#   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
+# endif
+
+#include <boost/detail/lightweight_main.hpp>
+
+namespace fs = boost::filesystem;
+using namespace boost::timer;
+
+#include <fstream>
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+namespace
+{
+  boost::int64_t max_cycles;
+
+  template <class STD_STRING>
+  nanosecond_type time_ctor(const STD_STRING& s)
+  {
+    boost::timer::auto_cpu_timer tmr;
+    boost::int64_t count = 0;
+    do
+    {
+      fs::path p(s);
+      ++count;
+    } while (count < max_cycles);
+
+    boost::timer::cpu_times elapsed = tmr.elapsed();
+    return elapsed.user + elapsed.system;
+  }
+
+  nanosecond_type time_loop()
+  {
+    boost::timer::auto_cpu_timer tmr;
+    boost::int64_t count = 0;
+    do
+    {
+      ++count;
+    } while (count < max_cycles);
+
+    boost::timer::cpu_times elapsed = tmr.elapsed();
+    return elapsed.user + elapsed.system;
+  }
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//                                      main                                            //
+//--------------------------------------------------------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+  if (argc != 2)
+  {
+    cout << "Usage: path_times <cycles-in-millions>\n";
+    return 1;
+  }
+
+  max_cycles = std::atoi(argv[1]) * 1000000LL;
+  cout << "testing " << std::atoi(argv[1]) << " million cycles" << endl;
+
+  cout << "time_loop" << endl;
+  nanosecond_type x = time_loop();
+
+  cout << "time_ctor with string" << endl;
+  nanosecond_type s = time_ctor(std::string("/foo/bar/baz"));
+
+  cout << "time_ctor with wstring" << endl;
+  nanosecond_type w = time_ctor(std::wstring(L"/foo/bar/baz"));
+
+  if (s > w)
+    cout << "narrow/wide CPU-time ratio = " << long double(s)/w << endl;
+  else
+    cout << "wide/narrow CPU-time ratio = " << long double(w)/s << endl;
+
+  cout << "returning from main()" << endl;
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/test/path_unit_test.cpp b/src/boost/libs/filesystem/test/path_unit_test.cpp
new file mode 100644
index 00000000..7ec70736
--- /dev/null
+++ b/src/boost/libs/filesystem/test/path_unit_test.cpp
@@ -0,0 +1,1253 @@
+//  filesystem path_unit_test.cpp  ---------------------------------------------------  //
+
+//  Copyright Beman Dawes 2008, 2009
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//  ----------------------------------------------------------------------------------  //
+//
+//  The purpose of this test is to ensure that each function in the public
+//  interface can be called with arguments of the appropriate types. It does
+//  not attempt to verify that the full range of values for each argument
+//  are processed correctly.
+//
+//  For full functionality tests, including probes with many different argument
+//  values, see path_test.cpp and other test programs.
+//
+//  ----------------------------------------------------------------------------------  //
+
+#include <boost/config/warning_disable.hpp>
+
+//  See deprecated_test for tests of deprecated features
+#ifndef BOOST_FILESYSTEM_NO_DEPRECATED
+# define BOOST_FILESYSTEM_NO_DEPRECATED
+#endif
+#ifndef BOOST_SYSTEM_NO_DEPRECATED
+# define BOOST_SYSTEM_NO_DEPRECATED
+#endif
+
+#include <boost/filesystem/path.hpp>
+
+#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>  // for imbue tests
+#include "test_codecvt.hpp"                                // for codecvt arg tests
+#include <boost/detail/lightweight_test_report.hpp>
+#include <boost/smart_ptr.hpp>  // used constructor tests
+#include <boost/functional/hash.hpp>
+
+#include <iostream>
+#include <iomanip>
+#include <sstream>
+#include <string>
+#include <cstring>
+#include <cwchar>
+#include <locale>
+#include <list>
+
+namespace fs = boost::filesystem;
+namespace bs = boost::system;
+using boost::filesystem::path;
+using std::cout;
+using std::endl;
+using std::string;
+using std::wstring;
+
+#define CHECK(x) check(x, __FILE__, __LINE__)
+#define PATH_IS(a, b) check_path(a, b, __FILE__, __LINE__)
+#define NATIVE_IS(p, s, ws) check_native(p, s, ws, __FILE__, __LINE__)
+#define IS(a,b) check_equal(a, b, __FILE__, __LINE__)
+
+#if defined(_MSC_VER)
+# pragma warning(push) // Save warning settings.
+# pragma warning(disable : 4428) // Disable universal-character-name encountered in source warning.
+#endif
+
+namespace
+{
+
+  boost::system::error_code ec;
+  const boost::system::error_code ok;
+  const boost::system::error_code ng(-1, boost::system::system_category());
+
+  std::string platform(BOOST_PLATFORM);
+
+  void check_path(const path& source,
+              const wstring& expected, const char* file, int line)
+  {
+    if (source == expected) return;
+
+    ++::boost::detail::test_errors();
+
+    std::cout << file;
+    std::wcout << L'(' << line << L"): source.wstring(): \""
+               << source.wstring()
+               << L"\" != expected: \"" << expected
+               << L"\"\n" ;
+  }
+
+# ifdef BOOST_WINDOWS_API
+  void check_native(const path& p,
+    const string&, const wstring& expected, const char* file, int line)
+# else
+  void check_native(const path& p,
+    const string& expected, const wstring&, const char* file, int line)
+# endif
+  {
+    if (p.native() == expected) return;
+
+    ++::boost::detail::test_errors();
+
+    std::cout << file  << '(' << line << "): native() is not equal expected\n"
+      "  native---: " << std::hex;
+    path::string_type nat(p.native());
+    for (path::string_type::const_iterator it = nat.begin(); it != nat.end(); ++it)
+      std::cout << long(*it) << ' ';
+    std::cout << "\n  expected-: ";
+    for (path::string_type::const_iterator it = expected.begin(); it != expected.end(); ++it)
+      std::cout << long(*it) << ' ';
+    std::cout << std::dec << std::endl;
+  }
+
+  template< class T1, class T2 >
+  void check_equal(const T1& value,
+                    const T2& expected, const char* file, int line)
+  {
+    if (value == expected) return;
+
+    ++::boost::detail::test_errors();
+
+    std::cout << file;
+
+    std::wcout << L'(' << line << L"): value: \"" << value
+               << L"\" != expected: \"" << expected
+               << L"\"\n" ;
+  }
+
+  void check(bool ok_, const char* file, int line)
+  {
+    if (ok_) return;
+
+    ++::boost::detail::test_errors();
+
+    std::cout << file << '(' << line << "): test failed\n";
+  }
+
+  string s("string");
+  wstring ws(L"wstring");
+  std::list<char> l;      // see main() for initialization to s, t, r, i, n, g
+  std::list<wchar_t> wl;  // see main() for initialization to w, s, t, r, i, n, g
+  std::vector<char> v;      // see main() for initialization to f, u, z
+  std::vector<wchar_t> wv;  // see main() for initialization to w, f, u, z
+
+  class Base {};
+  class Derived : public Base {};
+  void fun(const boost::shared_ptr< Base >&) {}
+
+  //  test_constructors  ---------------------------------------------------------------//
+
+  void test_constructors()
+  {
+    std::cout << "testing constructors..." << std::endl;
+
+    path x0;                                           // default constructor
+    PATH_IS(x0, L"");
+    BOOST_TEST_EQ(x0.native().size(), 0U);
+
+    path x1(l.begin(), l.end());                       // iterator range char
+    PATH_IS(x1, L"string");
+    BOOST_TEST_EQ(x1.native().size(), 6U);
+
+    path x2(x1);                                       // copy constructor
+    PATH_IS(x2, L"string");
+    BOOST_TEST_EQ(x2.native().size(), 6U);
+
+    path x3(wl.begin(), wl.end());                     // iterator range wchar_t
+    PATH_IS(x3, L"wstring");
+    BOOST_TEST_EQ(x3.native().size(), 7U);
+
+    // contiguous containers
+    path x4(string("std::string"));                    // std::string
+    PATH_IS(x4, L"std::string");
+    BOOST_TEST_EQ(x4.native().size(), 11U);
+
+    path x5(wstring(L"std::wstring"));                 // std::wstring
+    PATH_IS(x5, L"std::wstring");
+    BOOST_TEST_EQ(x5.native().size(), 12U);
+
+    path x4v(v);                                       // std::vector<char>
+    PATH_IS(x4v, L"fuz");
+    BOOST_TEST_EQ(x4v.native().size(), 3U);
+
+    path x5v(wv);                                      // std::vector<wchar_t>
+    PATH_IS(x5v, L"wfuz");
+    BOOST_TEST_EQ(x5v.native().size(), 4U);
+
+    path x6("array char");                             // array char
+    PATH_IS(x6, L"array char");
+    BOOST_TEST_EQ(x6.native().size(), 10U);
+
+    path x7(L"array wchar_t");                         // array wchar_t
+    PATH_IS(x7, L"array wchar_t");
+    BOOST_TEST_EQ(x7.native().size(), 13U);
+
+    char char_array[100];
+    std::strcpy(char_array, "big array char");
+    path x6o(char_array);                              // array char, only partially full
+    PATH_IS(x6o, L"big array char");
+    BOOST_TEST_EQ(x6o.native().size(), 14U);
+
+    wchar_t wchar_array[100];
+    std::wcscpy(wchar_array, L"big array wchar_t");
+    path x7o(wchar_array);                             // array char, only partially full
+    PATH_IS(x7o, L"big array wchar_t");
+    BOOST_TEST_EQ(x7o.native().size(), 17U);
+
+    path x8(s.c_str());                                // const char* null terminated
+    PATH_IS(x8, L"string");
+    BOOST_TEST_EQ(x8.native().size(), 6U);
+
+    path x9(ws.c_str());                               // const wchar_t* null terminated
+    PATH_IS(x9, L"wstring");
+    BOOST_TEST_EQ(x9.native().size(), 7U);
+
+    path x8nc(const_cast<char*>(s.c_str()));           // char* null terminated
+    PATH_IS(x8nc, L"string");
+    BOOST_TEST_EQ(x8nc.native().size(), 6U);
+
+    path x9nc(const_cast<wchar_t*>(ws.c_str()));       // wchar_t* null terminated
+    PATH_IS(x9nc, L"wstring");
+    BOOST_TEST_EQ(x9nc.native().size(), 7U);
+
+    // non-contiguous containers
+    path x10(l);                                       // std::list<char>
+    PATH_IS(x10, L"string");
+    BOOST_TEST_EQ(x10.native().size(), 6U);
+
+    path xll(wl);                                      // std::list<wchar_t>
+    PATH_IS(xll, L"wstring");
+    BOOST_TEST_EQ(xll.native().size(), 7U);
+
+    // easy-to-make coding errors
+    // path e1(x0, path::codecvt());  // fails to compile, and that is OK
+
+    boost::shared_ptr< Derived > pDerived( new Derived() );
+    fun( pDerived );  // tests constructor member template enable_if working correctly;
+                      // will fail to compile if enable_if not taking path off the table
+  }
+
+  path x;
+  path y;
+
+  //  test_assignments  ----------------------------------------------------------------//
+
+  void test_assignments()
+  {
+    std::cout << "testing assignments..." << std::endl;
+
+    x = path("yet another path");                      // another path
+    PATH_IS(x, L"yet another path");
+    BOOST_TEST_EQ(x.native().size(), 16U);
+
+    x = x;                                             // self-assignment
+    PATH_IS(x, L"yet another path");
+    BOOST_TEST_EQ(x.native().size(), 16U);
+
+    x.assign(l.begin(), l.end());                      // iterator range char
+    PATH_IS(x, L"string");
+
+    x.assign(wl.begin(), wl.end());                    // iterator range wchar_t
+    PATH_IS(x, L"wstring");
+
+    x = string("std::string");                         // container char
+    PATH_IS(x, L"std::string");
+
+    x = wstring(L"std::wstring");                      // container wchar_t
+    PATH_IS(x, L"std::wstring");
+
+    x = "array char";                                  // array char
+    PATH_IS(x, L"array char");
+
+    x = L"array wchar";                                // array wchar_t
+    PATH_IS(x, L"array wchar");
+
+    x = s.c_str();                                     // const char* null terminated
+    PATH_IS(x, L"string");
+
+    x = ws.c_str();                                    // const wchar_t* null terminated
+    PATH_IS(x, L"wstring");
+   }
+
+  //  test_move_construction_and_assignment  -------------------------------------------//
+
+  void test_move_construction_and_assignment()
+  {
+    std::cout << "testing move_construction_and_assignment..." << std::endl;
+
+# if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+    path from("long enough to avoid small object optimization");
+    path to(std::move(from));
+    BOOST_TEST(to == "long enough to avoid small object optimization");
+    if (!from.empty())
+      cout << "Note: move construction did not result in empty source path" << endl;
+
+    path from2("long enough to avoid small object optimization");
+    path to2;
+    to2 = std::move(from2);
+    BOOST_TEST(to2 == "long enough to avoid small object optimization");
+    if (!from2.empty())
+      cout << "Note: move assignment did not result in empty rhs path" << endl;
+# else
+    std::cout <<
+      "Test skipped because compiler does not support move semantics" << std::endl;
+# endif
+
+  }
+
+  //  test_appends  --------------------------------------------------------------------//
+
+  void test_appends()
+  {
+    std::cout << "testing appends..." << std::endl;
+
+# ifdef BOOST_WINDOWS_API
+#   define BOOST_FS_FOO L"/foo\\"
+# else   // POSIX paths
+#   define BOOST_FS_FOO L"/foo/"
+# endif
+
+    x = "/foo";
+    x /= path("");                                      // empty path
+    PATH_IS(x, L"/foo");
+
+    x = "/foo";
+    x /= path("/");                                     // slash path
+    PATH_IS(x, L"/foo/");
+
+    x = "/foo";
+    x /= path("/boo");                                  // slash path
+    PATH_IS(x, L"/foo/boo");
+
+    x = "/foo";
+    x /= x;                                             // self-append
+    PATH_IS(x, L"/foo/foo");
+
+    x = "/foo";
+    x /= path("yet another path");                      // another path
+    PATH_IS(x, BOOST_FS_FOO L"yet another path");
+
+    x = "/foo";
+    x.append(l.begin(), l.end());                      // iterator range char
+    PATH_IS(x, BOOST_FS_FOO L"string");
+
+    x = "/foo";
+    x.append(wl.begin(), wl.end());                    // iterator range wchar_t
+    PATH_IS(x, BOOST_FS_FOO L"wstring");
+
+    x = "/foo";
+    x /= string("std::string");                         // container char
+    PATH_IS(x, BOOST_FS_FOO L"std::string");
+
+    x = "/foo";
+    x /= wstring(L"std::wstring");                      // container wchar_t
+    PATH_IS(x, BOOST_FS_FOO L"std::wstring");
+
+    x = "/foo";
+    x /= "array char";                                  // array char
+    PATH_IS(x, BOOST_FS_FOO L"array char");
+
+    x = "/foo";
+    x /= L"array wchar";                                // array wchar_t
+    PATH_IS(x, BOOST_FS_FOO L"array wchar");
+
+    x = "/foo";
+    x /= s.c_str();                                     // const char* null terminated
+    PATH_IS(x, BOOST_FS_FOO L"string");
+
+    x = "/foo";
+    x /= ws.c_str();                                    // const wchar_t* null terminated
+    PATH_IS(x, BOOST_FS_FOO L"wstring");
+   }
+
+  //  test_concats  --------------------------------------------------------------------//
+
+  void test_concats()
+  {
+    std::cout << "testing concats..." << std::endl;
+
+    x = "/foo";
+    x += path("");                                      // empty path
+    PATH_IS(x, L"/foo");
+
+    x = "/foo";
+    x += path("/");                                     // slash path
+    PATH_IS(x, L"/foo/");
+
+    x = "/foo";
+    x += path("boo");                                  // slash path
+    PATH_IS(x, L"/fooboo");
+
+    x = "foo";
+    x += x;                                             // self-append
+    PATH_IS(x, L"foofoo");
+
+    x = "foo-";
+    x += path("yet another path");                      // another path
+    PATH_IS(x, L"foo-yet another path");
+
+    x = "foo-";
+    x.concat(l.begin(), l.end());                      // iterator range char
+    PATH_IS(x, L"foo-string");
+
+    x = "foo-";
+    x.concat(wl.begin(), wl.end());                    // iterator range wchar_t
+    PATH_IS(x, L"foo-wstring");
+
+    x = "foo-";
+    x += string("std::string");                         // container char
+    PATH_IS(x, L"foo-std::string");
+
+    x = "foo-";
+    x += wstring(L"std::wstring");                      // container wchar_t
+    PATH_IS(x, L"foo-std::wstring");
+
+    x = "foo-";
+    x += "array char";                                  // array char
+    PATH_IS(x, L"foo-array char");
+
+    x = "foo-";
+    x += L"array wchar";                                // array wchar_t
+    PATH_IS(x, L"foo-array wchar");
+
+    x = "foo-";
+    x += s.c_str();                                     // const char* null terminated
+    PATH_IS(x, L"foo-string");
+
+    x = "foo-";
+    x += ws.c_str();                                    // const wchar_t* null terminated
+    PATH_IS(x, L"foo-wstring");
+
+    x = "foo-";
+    x += 'x';                                           // char
+    PATH_IS(x, L"foo-x");
+
+    x = "foo-";
+    x += L'x';                                          // wchar
+    PATH_IS(x, L"foo-x");
+   }
+
+  //  test_observers  ------------------------------------------------------------------//
+
+  void test_observers()
+  {
+    std::cout << "testing observers..." << std::endl;
+
+    path p0("abc");
+
+    CHECK(p0.native().size() == 3);
+    CHECK(p0.size() == 3);
+    CHECK(p0.string() == "abc");
+    CHECK(p0.string().size() == 3);
+    CHECK(p0.wstring() == L"abc");
+    CHECK(p0.wstring().size() == 3);
+
+    p0 = "";
+    CHECK(p0.native().size() == 0);
+    CHECK(p0.size() == 0);
+
+# ifdef BOOST_WINDOWS_API
+
+    path p("abc\\def/ghi");
+
+    CHECK(std::wstring(p.c_str()) == L"abc\\def/ghi");
+
+    CHECK(p.string() == "abc\\def/ghi");
+    CHECK(p.wstring() == L"abc\\def/ghi");
+
+    CHECK(p.generic_path().string() == "abc/def/ghi");
+    CHECK(p.generic_string() == "abc/def/ghi");
+    CHECK(p.generic_wstring() == L"abc/def/ghi");
+
+    CHECK(p.generic_string<string>() == "abc/def/ghi");
+    CHECK(p.generic_string<wstring>() == L"abc/def/ghi");
+    CHECK(p.generic_string<path::string_type>() == L"abc/def/ghi");
+
+# else  // BOOST_POSIX_API
+
+    path p("abc\\def/ghi");
+
+    CHECK(string(p.c_str()) == "abc\\def/ghi");
+
+    CHECK(p.string() == "abc\\def/ghi");
+    CHECK(p.wstring() == L"abc\\def/ghi");
+
+    CHECK(p.generic_path().string() == "abc\\def/ghi");
+    CHECK(p.generic_string() == "abc\\def/ghi");
+    CHECK(p.generic_wstring() == L"abc\\def/ghi");
+
+    CHECK(p.generic_string<string>() == "abc\\def/ghi");
+    CHECK(p.generic_string<wstring>() == L"abc\\def/ghi");
+    CHECK(p.generic_string<path::string_type>() == "abc\\def/ghi");
+
+# endif
+  }
+
+  //  test_relationals  ----------------------------------------------------------------//
+
+  void test_relationals()
+  {
+    std::cout << "testing relationals..." << std::endl;
+
+    boost::hash<path> hash;
+
+# ifdef BOOST_WINDOWS_API
+    // this is a critical use case to meet user expectations
+    CHECK(path("c:\\abc") == path("c:/abc"));
+    CHECK(hash(path("c:\\abc")) == hash(path("c:/abc")));
+# endif
+
+    const path p("bar");
+    const path p2("baz");
+
+    CHECK(!(p < p));
+    CHECK(p < p2);
+    CHECK(!(p2 < p));
+    CHECK(p < "baz");
+    CHECK(p < string("baz"));
+    CHECK(p < L"baz");
+    CHECK(p < wstring(L"baz"));
+    CHECK(!("baz" < p));
+    CHECK(!(string("baz") < p));
+    CHECK(!(L"baz" < p));
+    CHECK(!(wstring(L"baz") < p));
+
+    CHECK(p == p);
+    CHECK(!(p == p2));
+    CHECK(!(p2 == p));
+    CHECK(p2 == "baz");
+    CHECK(p2 == string("baz"));
+    CHECK(p2 == L"baz");
+    CHECK(p2 == wstring(L"baz"));
+    CHECK("baz" == p2);
+    CHECK(string("baz") == p2);
+    CHECK(L"baz" == p2);
+    CHECK(wstring(L"baz") == p2);
+
+    CHECK(hash(p) == hash(p));
+    CHECK(hash(p) != hash(p2)); // Not strictly required, but desirable
+
+    CHECK(!(p != p));
+    CHECK(p != p2);
+    CHECK(p2 != p);
+
+    CHECK(p <= p);
+    CHECK(p <= p2);
+    CHECK(!(p2 <= p));
+
+    CHECK(!(p > p));
+    CHECK(!(p > p2));
+    CHECK(p2 > p);
+
+    CHECK(p >= p);
+    CHECK(!(p >= p2));
+    CHECK(p2 >= p);
+}
+
+  //  test_inserter_and_extractor  -----------------------------------------------------//
+
+  void test_inserter_and_extractor()
+  {
+    std::cout << "testing inserter and extractor..." << std::endl;
+
+    path p1("foo bar");  // verify space in path roundtrips per ticket #3863
+    path p2;
+
+    std::stringstream ss;
+
+    CHECK(p1 != p2);
+    ss << p1;
+    ss >> p2;
+    CHECK(p1 == p2);
+
+    path wp1(L"foo bar");
+    path wp2;
+
+    std::wstringstream wss;
+
+    CHECK(wp1 != wp2);
+    wss << wp1;
+    wss >> wp2;
+    CHECK(wp1 == wp2);
+  }
+
+  //  test_other_non_members  ----------------------------------------------------------//
+
+  void test_other_non_members()
+  {
+    std::cout << "testing other_non_members..." << std::endl;
+
+    path p1("foo");
+    path p2("bar");
+
+    //  operator /
+
+    CHECK(p1 / p2 == path("foo/bar").make_preferred());
+    CHECK("foo" / p2 == path("foo/bar").make_preferred());
+    CHECK(L"foo" / p2 == path("foo/bar").make_preferred());
+    CHECK(string("foo") / p2 == path("foo/bar").make_preferred());
+    CHECK(wstring(L"foo") / p2 == path("foo/bar").make_preferred());
+    CHECK(p1 / "bar" == path("foo/bar").make_preferred());
+    CHECK(p1 / L"bar" == path("foo/bar").make_preferred());
+    CHECK(p1 / string("bar") == path("foo/bar").make_preferred());
+    CHECK(p1 / wstring(L"bar") == path("foo/bar").make_preferred());
+
+    swap(p1, p2);
+
+    CHECK(p1 == "bar");
+    CHECK(p2 == "foo");
+
+    CHECK(!path("").filename_is_dot());
+    CHECK(!path("").filename_is_dot_dot());
+    CHECK(!path("..").filename_is_dot());
+    CHECK(!path(".").filename_is_dot_dot());
+    CHECK(!path("...").filename_is_dot_dot());
+    CHECK(path(".").filename_is_dot());
+    CHECK(path("..").filename_is_dot_dot());
+    CHECK(path("/.").filename_is_dot());
+    CHECK(path("/..").filename_is_dot_dot());
+    CHECK(!path("a.").filename_is_dot());
+    CHECK(!path("a..").filename_is_dot_dot());
+
+    // edge cases
+    CHECK(path("foo/").filename() == path("."));
+    CHECK(path("foo/").filename_is_dot());
+    CHECK(path("/").filename() == path("/"));
+    CHECK(!path("/").filename_is_dot());
+# ifdef BOOST_WINDOWS_API
+    CHECK(path("c:.").filename() == path("."));
+    CHECK(path("c:.").filename_is_dot());
+    CHECK(path("c:/").filename() == path("/"));
+    CHECK(!path("c:\\").filename_is_dot());
+# else
+    CHECK(path("c:.").filename() == path("c:."));
+    CHECK(!path("c:.").filename_is_dot());
+    CHECK(path("c:/").filename() == path("."));
+    CHECK(path("c:/").filename_is_dot());
+# endif
+
+    // check that the implementation code to make the edge cases above work right
+    // doesn't cause some non-edge cases to fail
+    CHECK(path("c:").filename() != path("."));
+    CHECK(!path("c:").filename_is_dot());
+
+    // examples from reference.html
+    std::cout << path(".").filename_is_dot();            // outputs 1
+    std::cout << path("/.").filename_is_dot();           // outputs 1
+    std::cout << path("foo/.").filename_is_dot();        // outputs 1
+    std::cout << path("foo/").filename_is_dot();         // outputs 1
+    std::cout << path("/").filename_is_dot();            // outputs 0
+    std::cout << path("/foo").filename_is_dot();         // outputs 0
+    std::cout << path("/foo.").filename_is_dot();        // outputs 0
+    std::cout << path("..").filename_is_dot();           // outputs 0
+    cout << std::endl;
+  }
+
+//  //  test_modifiers  ------------------------------------------------------------------//
+//
+//  void test_modifiers()
+//  {
+//    std::cout << "testing modifiers..." << std::endl;
+//
+//  }
+
+  //  test_iterators  ------------------------------------------------------------------//
+
+  void test_iterators()
+  {
+    std::cout << "testing iterators..." << std::endl;
+
+    path p1;
+    CHECK(p1.begin() == p1.end());
+
+    path p2("/");
+    CHECK(p2.begin() != p2.end());
+    CHECK(*p2.begin() == "/");
+    CHECK(++p2.begin() == p2.end());
+
+    path p3("foo/bar/baz");
+
+    path::iterator it(p3.begin());
+    CHECK(p3.begin() != p3.end());
+    CHECK(*it == "foo");
+    CHECK(*++it == "bar");
+    CHECK(*++it == "baz");
+    CHECK(*--it == "bar");
+    CHECK(*--it == "foo");
+    CHECK(*++it == "bar");
+    CHECK(*++it == "baz");
+    CHECK(++it == p3.end());
+  }
+
+  //  test_reverse_iterators  ----------------------------------------------------------//
+
+  void test_reverse_iterators()
+  {
+    std::cout << "testing reverse_iterators..." << std::endl;
+
+    path p1;
+    CHECK(p1.rbegin() == p1.rend());
+
+    path p2("/");
+    CHECK(p2.rbegin() != p2.rend());
+    CHECK(*p2.rbegin() == "/");
+    CHECK(++p2.rbegin() == p2.rend());
+
+    path p3("foo/bar/baz");
+
+    path::reverse_iterator it(p3.rbegin());
+    CHECK(p3.rbegin() != p3.rend());
+    CHECK(*it == "baz");
+    CHECK(*++it == "bar");
+    CHECK(*++it == "foo");
+    CHECK(*--it == "bar");
+    CHECK(*--it == "baz");
+    CHECK(*++it == "bar");
+    CHECK(*++it == "foo");
+    CHECK(++it == p3.rend());
+  }
+
+  //  test_modifiers  ------------------------------------------------------------------//
+
+  void test_modifiers()
+  {
+    std::cout << "testing modifiers..." << std::endl;
+
+    CHECK(path("").remove_filename() == "");
+    CHECK(path("foo").remove_filename() == "");
+    CHECK(path("/foo").remove_filename() == "/");
+    CHECK(path("foo/bar").remove_filename() == "foo");
+    BOOST_TEST_EQ(path("foo/bar/").remove_filename(), path("foo/bar"));
+    BOOST_TEST_EQ(path(".").remove_filename(), path(""));
+    BOOST_TEST_EQ(path("./.").remove_filename(), path("."));
+    BOOST_TEST_EQ(path("/.").remove_filename(), path("/"));
+    BOOST_TEST_EQ(path("..").remove_filename(), path(""));
+    BOOST_TEST_EQ(path("../..").remove_filename(), path(".."));
+    BOOST_TEST_EQ(path("/..").remove_filename(), path("/"));
+
+  }
+
+  //  test_decompositions  -------------------------------------------------------------//
+
+  void test_decompositions()
+  {
+    std::cout << "testing decompositions..." << std::endl;
+
+    CHECK(path("").root_name().string() == "");
+    CHECK(path("foo").root_name().string() == "");
+    CHECK(path("/").root_name().string() == "");
+    CHECK(path("/foo").root_name().string() == "");
+    CHECK(path("//netname").root_name().string() == "//netname");
+    CHECK(path("//netname/foo").root_name().string() == "//netname");
+
+    CHECK(path("").root_directory().string() == "");
+    CHECK(path("foo").root_directory().string() == "");
+    CHECK(path("/").root_directory().string() == "/");
+    CHECK(path("/foo").root_directory().string() == "/");
+    CHECK(path("//netname").root_directory().string() == "");
+    CHECK(path("//netname/foo").root_directory().string() == "/");
+
+    CHECK(path("").root_path().string() == "");
+    CHECK(path("/").root_path().string() == "/");
+    CHECK(path("/foo").root_path().string() == "/");
+    CHECK(path("//netname").root_path().string() == "//netname");
+    CHECK(path("//netname/foo").root_path().string() == "//netname/");
+
+#   ifdef BOOST_WINDOWS_API
+    CHECK(path("c:/foo").root_path().string() == "c:/");
+#   endif
+
+    CHECK(path("").relative_path().string() == "");
+    CHECK(path("/").relative_path().string() == "");
+    CHECK(path("/foo").relative_path().string() == "foo");
+
+    CHECK(path("").parent_path().string() == "");
+    CHECK(path("/").parent_path().string() == "");
+    CHECK(path("/foo").parent_path().string() == "/");
+    CHECK(path("/foo/bar").parent_path().string() == "/foo");
+
+    CHECK(path("/foo/bar/baz.zoo").filename().string() == "baz.zoo");
+
+    CHECK(path("/foo/bar/baz.zoo").stem().string() == "baz");
+    CHECK(path("/foo/bar.woo/baz").stem().string() == "baz");
+
+    CHECK(path("foo.bar.baz.tar.bz2").extension().string() == ".bz2");
+    CHECK(path("/foo/bar/baz.zoo").extension().string() == ".zoo");
+    CHECK(path("/foo/bar.woo/baz").extension().string() == "");
+  }
+
+  //  test_queries  --------------------------------------------------------------------//
+
+  void test_queries()
+  {
+    std::cout << "testing queries..." << std::endl;
+
+    path p1("");
+    path p2("//netname/foo.doo");
+
+    CHECK(p1.empty());
+    CHECK(!p1.has_root_path());
+    CHECK(!p1.has_root_name());
+    CHECK(!p1.has_root_directory());
+    CHECK(!p1.has_relative_path());
+    CHECK(!p1.has_parent_path());
+    CHECK(!p1.has_filename());
+    CHECK(!p1.has_stem());
+    CHECK(!p1.has_extension());
+    CHECK(!p1.is_absolute());
+    CHECK(p1.is_relative());
+
+    CHECK(!p2.empty());
+    CHECK(p2.has_root_path());
+    CHECK(p2.has_root_name());
+    CHECK(p2.has_root_directory());
+    CHECK(p2.has_relative_path());
+    CHECK(p2.has_parent_path());
+    CHECK(p2.has_filename());
+    CHECK(p2.has_stem());
+    CHECK(p2.has_extension());
+    CHECK(p2.is_absolute());
+    CHECK(!p2.is_relative());
+
+  }
+
+  //  test_imbue_locale  ---------------------------------------------------------------//
+
+  void test_imbue_locale()
+  {
+    std::cout << "testing imbue locale..." << std::endl;
+
+    //  weak test case for before/after states since we don't know what characters the
+    //  default locale accepts.
+    path before("abc");
+
+    //  So that tests are run with known encoding, use Boost UTF-8 codecvt
+    //  \u2722 and \xE2\x9C\xA2 are UTF-16 and UTF-8 FOUR TEARDROP-SPOKED ASTERISK
+
+    std::locale global_loc = std::locale();
+    std::locale loc(global_loc, new fs::detail::utf8_codecvt_facet);
+    std::cout << "  imbuing locale ..." << std::endl;
+    std::locale old_loc = path::imbue(loc);
+
+    std::cout << "  testing with the imbued locale ..." << std::endl;
+    path p2("\xE2\x9C\xA2");
+    CHECK(p2.wstring().size() == 1);
+    CHECK(p2.wstring()[0] == 0x2722);
+
+    std::cout << "  imbuing the original locale ..." << std::endl;
+    path::imbue(old_loc);
+
+    std::cout << "  testing with the original locale ..." << std::endl;
+    path after("abc");
+    CHECK(before == after);
+
+    std::cout << "  locale testing complete" << std::endl;
+  }
+
+  //  test_codecvt_argument  -----------------------------------------------------------//
+
+  void test_codecvt_argument()
+  {
+    std::cout << "testing codecvt arguments..." << std::endl;
+
+    const char * c1 = "a1";
+    const std::string s1(c1);
+    const std::wstring ws1(L"b2");  // off-by-one mimics test_codecvt
+    const std::string s2("y8");
+    const std::wstring ws2(L"z9");
+
+    test_codecvt cvt;  // produces off-by-one values that will always differ from
+                       // the system's default locale codecvt facet
+
+    int t = 0;
+
+    //  constructors
+    std::cout << "  constructors test " << ++t << std::endl;
+    path p(c1, cvt);
+    NATIVE_IS(p, s1, ws1);
+
+    std::cout << "  test " << ++t << std::endl;
+    path p1(s1.begin(), s1.end(), cvt);
+    NATIVE_IS(p1, s1, ws1);
+
+    std::cout << "  test " << ++t << std::endl;
+    path p2(ws2, cvt);
+    NATIVE_IS(p2, s2, ws2);
+
+    std::cout << "  test " << ++t << std::endl;
+    path p3(ws2.begin(), ws2.end(), cvt);
+    NATIVE_IS(p3, s2, ws2);
+
+    // path p2(p1, cvt);  // fails to compile, and that is OK
+
+    //  assigns
+    p1.clear();
+    std::cout << "  assigns test " << ++t << std::endl;
+    p1.assign(s1,cvt);
+    NATIVE_IS(p1, s1, ws1);
+    p1.clear();
+    std::cout << "  test " << ++t << std::endl;
+    p1.assign(s1.begin(), s1.end(), cvt);
+    NATIVE_IS(p1, s1, ws1);
+    // p1.assign(p, cvt);  // fails to compile, and that is OK
+
+    //  appends
+    p1.clear();
+    std::cout << "  appends test " << ++t << std::endl;
+    p1.append(s1,cvt);
+    NATIVE_IS(p1, s1, ws1);
+    p1.clear();
+    std::cout << "  test " << ++t << std::endl;
+    p1.append(s1.begin(), s1.end(), cvt);
+    NATIVE_IS(p1, s1, ws1);
+    // p1.append(p, cvt);  // fails to compile, and that is OK
+
+    //  native observers
+    std::cout << "  native observers test " << ++t << std::endl;
+    CHECK(p.string<std::string>(cvt) == s1);
+    std::cout << "  test " << ++t << std::endl;
+    CHECK(p.string(cvt) == s1);
+    std::cout << "  test " << ++t << std::endl;
+    CHECK(p.string<std::wstring>(cvt) == ws1);
+    std::cout << "  test " << ++t << std::endl;
+    CHECK(p.wstring(cvt) == ws1);
+
+    //  generic observers
+    std::cout << "  generic observers test " << ++t << std::endl;
+    CHECK(p.generic_string<std::string>(cvt) == s1);
+    std::cout << "  test " << ++t << std::endl;
+    CHECK(p.generic_string(cvt) == s1);
+    std::cout << "  test " << ++t << std::endl;
+    CHECK(p.generic_string<std::wstring>(cvt) == ws1);
+    std::cout << "  test " << ++t << std::endl;
+    CHECK(p.generic_wstring(cvt) == ws1);
+
+    std::cout << "  codecvt arguments testing complete" << std::endl;
+  }
+
+  //  test_overloads  ------------------------------------------------------------------//
+
+  void test_overloads()
+  {
+    std::cout << "testing overloads..." << std::endl;
+    std::string sto("hello");
+    const char a[] = "goodbye";
+    path p1(sto);
+    path p2(sto.c_str());
+    path p3(a);
+    path p4("foo");
+
+    std::wstring wsto(L"hello");
+    const wchar_t wa[] = L"goodbye";
+    path wp1(wsto);
+    path wp2(wsto.c_str());
+    path wp3(wa);
+    path wp4(L"foo");
+  }
+
+  //  test_error_handling  -------------------------------------------------------------//
+
+  class error_codecvt
+    : public std::codecvt< wchar_t, char, std::mbstate_t >
+  {
+  public:
+    explicit error_codecvt()
+        : std::codecvt<wchar_t, char, std::mbstate_t>() {}
+  protected:
+
+    virtual bool do_always_noconv() const throw() { return false; }
+    virtual int do_encoding() const throw() { return 0; }
+
+    virtual std::codecvt_base::result do_in(std::mbstate_t&,
+      const char*, const char*, const char*&,
+      wchar_t*, wchar_t*, wchar_t*&) const
+    {
+      static std::codecvt_base::result r = std::codecvt_base::noconv;
+      if (r == std::codecvt_base::partial) r = std::codecvt_base::error;
+      else if (r == std::codecvt_base::error) r = std::codecvt_base::noconv;
+      else r = std::codecvt_base::partial;
+      return r;
+    }
+
+    virtual std::codecvt_base::result do_out(std::mbstate_t &,
+      const wchar_t*, const wchar_t*, const wchar_t*&,
+      char*, char*, char*&) const
+    {
+      static std::codecvt_base::result r = std::codecvt_base::noconv;
+      if (r == std::codecvt_base::partial) r = std::codecvt_base::error;
+      else if (r == std::codecvt_base::error) r = std::codecvt_base::noconv;
+      else r = std::codecvt_base::partial;
+      return r;
+    }
+
+    virtual std::codecvt_base::result do_unshift(std::mbstate_t&,
+        char*, char*, char* &) const  { return ok; }
+    virtual int do_length(std::mbstate_t &,
+      const char*, const char*, std::size_t) const  { return 0; }
+    virtual int do_max_length() const throw () { return 0; }
+  };
+
+  void test_error_handling()
+  {
+    std::cout << "testing error handling..." << std::endl;
+
+    std::locale global_loc = std::locale();
+    std::locale loc(global_loc, new error_codecvt);
+    std::cout << "  imbuing error locale ..." << std::endl;
+    std::locale old_loc = path::imbue(loc);
+
+    //  These tests rely on a path constructor that fails in the locale conversion.
+    //  Thus construction has to call codecvt. Force that by using a narrow string
+    //  for Windows, and a wide string for POSIX.
+#   ifdef BOOST_WINDOWS_API
+#     define STRING_FOO_ "foo"
+#   else
+#     define STRING_FOO_ L"foo"
+#   endif
+
+    {
+      std::cout << "    testing std::codecvt_base::partial error..." << std::endl;
+      bool exception_thrown (false);
+      try { path(STRING_FOO_); }
+      catch (const bs::system_error & ex)
+      {
+        exception_thrown = true;
+        BOOST_TEST_EQ(ex.code(), bs::error_code(std::codecvt_base::partial,
+          fs::codecvt_error_category()));
+      }
+      catch (...) { std::cout << "***** unexpected exception type *****" << std::endl; }
+      BOOST_TEST(exception_thrown);
+    }
+
+    {
+      std::cout << "    testing std::codecvt_base::error error..." << std::endl;
+      bool exception_thrown (false);
+      try { path(STRING_FOO_); }
+      catch (const bs::system_error & ex)
+      {
+        exception_thrown = true;
+        BOOST_TEST_EQ(ex.code(), bs::error_code(std::codecvt_base::error,
+          fs::codecvt_error_category()));
+      }
+      catch (...) { std::cout << "***** unexpected exception type *****" << std::endl; }
+      BOOST_TEST(exception_thrown);
+    }
+
+    {
+      std::cout << "    testing std::codecvt_base::noconv error..." << std::endl;
+      bool exception_thrown (false);
+      try { path(STRING_FOO_); }
+      catch (const bs::system_error & ex)
+      {
+        exception_thrown = true;
+        BOOST_TEST_EQ(ex.code(), bs::error_code(std::codecvt_base::noconv,
+          fs::codecvt_error_category()));
+      }
+      catch (...) { std::cout << "***** unexpected exception type *****" << std::endl; }
+      BOOST_TEST(exception_thrown);
+    }
+
+    std::cout << "  restoring original locale ..." << std::endl;
+    path::imbue(old_loc);
+    std::cout << "  testing error handling complete" << std::endl;
+ }
+
+# if 0
+
+//  //  test_locales  --------------------------------------------------------------------//
+//
+//  void test_locales()
+//  {
+//    std::cout << "testing locales..." << std::endl;
+//
+//  }
+
+  //  test_user_supplied_type  ---------------------------------------------------------//
+
+  typedef std::basic_string<int> user_string;
+
+}  // unnamed namespace
+
+namespace boost
+{
+namespace filesystem
+{
+  namespace path_traits
+  {
+    template<> struct is_iterator<const user_string::value_type *> { static const bool value = true; };
+    template<> struct is_iterator<user_string::value_type *> { static const bool value = true; };
+    template<> struct is_iterator<user_string::iterator> { static const bool value = true; };
+    template<> struct is_iterator<user_string::const_iterator> { static const bool value = true; };
+    template<> struct is_container<user_string> { static const bool value = true; };
+
+    template<>
+    void append<user_string::value_type>(const user_string::value_type * begin,
+      const user_string::value_type * end, string_type & target, system::error_code & ec)
+    {
+      for (; begin != end && *begin; ++begin)
+        target += *begin + 1;  // change so that results distinguishable from char cvts
+    }
+
+#  ifdef __GNUC__
+    //  This specialization shouldn't be needed, and VC++, Intel, and others work
+    //  fine without it. But gcc 4.3.2, and presumably other versions, need it.
+    template<>
+    void append<user_string::value_type>(const user_string::value_type * begin,
+      string_type & target, system::error_code & ec)
+    {
+      path_traits::append<user_string::value_type>(begin,
+        static_cast<const user_string::value_type *>(0), target, ec);
+    }
+#  endif
+
+    template<>
+    user_string convert<user_string>(const string_type & source,
+      system::error_code & ec)
+    {
+      user_string temp;
+      for (string_type::const_iterator it = source.begin();
+            it != source.end(); ++it)
+        temp += *it - 1;
+      return temp;
+    }
+  }  // namespace path_traits
+}  // namespace filesystem
+}  // namespace boost
+
+namespace
+{
+
+  void test_user_supplied_type()
+  {
+    std::cout << "testing user supplied type..." << std::endl;
+
+    user_string::value_type usr_c_str[] = { 'a', 'b', 'c', 0 };
+    user_string usr(usr_c_str);
+
+    path p1(usr.c_str());
+    CHECK(p1 == path("bcd"));
+    CHECK(p1 == "bcd");
+    user_string s1(p1.string<user_string>());
+    CHECK(s1 == usr);
+  }
+
+# endif
+
+  inline const char* macro_value(const char* name, const char* value)
+  {
+    static const char* no_value = "[no value]";
+    static const char* not_defined = "[not defined]";
+
+    //if (0 != strcmp(name, value + 1))  // macro is defined
+    //{
+    //  if (value[1])
+    //    return value;
+    //  else
+    //    return no_value;
+    //}
+    //return not_defined;
+
+    return 0 == strcmp(name, value + 1)
+      ? not_defined
+      : (value[1] ? value : no_value);
+  }
+
+#define BOOST_MACRO_VALUE(X) macro_value(#X, BOOST_STRINGIZE(=X))
+
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                     main                                             //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+int test_main(int, char*[])
+{
+// document state of critical macros
+#ifdef BOOST_POSIX_API
+  cout << "BOOST_POSIX_API" << endl;
+  BOOST_TEST(path::preferred_separator == '/');
+#endif
+#ifdef BOOST_WINDOWS_API
+  cout << "BOOST_WINDOWS_API" << endl;
+  BOOST_TEST(path::preferred_separator == '\\');
+#endif
+
+  cout << "BOOST_FILESYSTEM_DECL "
+    << BOOST_MACRO_VALUE(BOOST_FILESYSTEM_DECL) << endl;
+
+//#ifdef BOOST_FILESYSTEM_DECL
+//  cout << "BOOST_FILESYSTEM_DECL is defined as "
+//    << BOOST_STRINGIZE(BOOST_FILESYSTEM_DECL) << endl;
+//#else
+//  cout << "BOOST_FILESYSTEM_DECL is not defined" << endl;
+//#endif
+
+  l.push_back('s');
+  l.push_back('t');
+  l.push_back('r');
+  l.push_back('i');
+  l.push_back('n');
+  l.push_back('g');
+
+  wl.push_back(L'w');
+  wl.push_back(L's');
+  wl.push_back(L't');
+  wl.push_back(L'r');
+  wl.push_back(L'i');
+  wl.push_back(L'n');
+  wl.push_back(L'g');
+
+  v.push_back('f');
+  v.push_back('u');
+  v.push_back('z');
+
+  wv.push_back(L'w');
+  wv.push_back(L'f');
+  wv.push_back(L'u');
+  wv.push_back(L'z');
+
+  test_overloads();
+  test_constructors();
+  test_assignments();
+  test_move_construction_and_assignment();
+  test_appends();
+  test_concats();
+  test_modifiers();
+  test_observers();
+  test_relationals();
+  test_inserter_and_extractor();
+  test_other_non_members();
+  test_iterators();
+  test_reverse_iterators();
+  test_decompositions();
+  test_queries();
+  test_imbue_locale();
+  test_codecvt_argument();
+  test_error_handling();
+
+#if 0
+
+  test_user_supplied_type();
+
+#endif
+
+  std::string foo("\\abc");
+  const char* bar = "/abc";
+
+  if (foo == bar)
+    cout << "unintended consequence\n";
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/quick.cpp b/src/boost/libs/filesystem/test/quick.cpp
new file mode 100644
index 00000000..d981a9d6
--- /dev/null
+++ b/src/boost/libs/filesystem/test/quick.cpp
@@ -0,0 +1,24 @@
+
+// Copyright 2017 Peter Dimov.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+
+// See library home page at http://www.boost.org/libs/system
+
+#include <boost/filesystem.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+namespace fs = boost::filesystem;
+
+int main()
+{
+    fs::path p1( "a" );
+    fs::path p2 = p1 / "b";
+
+    BOOST_TEST_EQ( p2, "a/b" );
+
+    return boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/relative_test.cpp b/src/boost/libs/filesystem/test/relative_test.cpp
new file mode 100644
index 00000000..9c4b7d25
--- /dev/null
+++ b/src/boost/libs/filesystem/test/relative_test.cpp
@@ -0,0 +1,118 @@
+//  filesystem relative_test.cpp  ----------------------------------------------------  //
+
+//  Copyright Beman Dawes 2015
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//  ----------------------------------------------------------------------------------  //
+//
+//  At least initially, development is easier if these tests are in a separate file.
+//
+//  ----------------------------------------------------------------------------------  //
+
+#include <boost/config/warning_disable.hpp>
+#include <boost/filesystem/path.hpp>
+#include <boost/detail/lightweight_test_report.hpp>
+#include <iostream>
+
+using boost::filesystem::path;
+using std::cout;
+using std::endl;
+
+namespace
+{
+  void lexically_relative_test()
+  {
+    cout << "lexically_relative_test..." << endl;
+
+    BOOST_TEST(path("").lexically_relative("") == "");
+    BOOST_TEST(path("").lexically_relative("/foo") == "");
+    BOOST_TEST(path("/foo").lexically_relative("") == "");
+    BOOST_TEST(path("/foo").lexically_relative("/foo") == ".");
+    BOOST_TEST(path("").lexically_relative("foo") == "");
+    BOOST_TEST(path("foo").lexically_relative("") == "");
+    BOOST_TEST(path("foo").lexically_relative("foo") == ".");
+
+    BOOST_TEST(path("a/b/c").lexically_relative("a") == "b/c");
+    BOOST_TEST(path("a//b//c").lexically_relative("a") == "b/c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b") == "c");
+    BOOST_TEST(path("a///b//c").lexically_relative("a//b") == "c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/c") == ".");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/c/x") == "..");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/c/x/y") == "../..");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/x") == "../b/c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/x") == "../c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/x/y") == "../../b/c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/x/y") == "../../c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/c/x/y/z") == "../../..");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/") == "b/c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/.") == "b/c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/./") == "b/c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/..") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/../") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/d/..") == "c");
+    BOOST_TEST(path("a/b/c").lexically_relative("a/b/d/../") == "c");
+
+    // paths unrelated except first element, and first element is root directory
+    BOOST_TEST(path("/a/b/c").lexically_relative("/x") == "../a/b/c");
+    BOOST_TEST(path("/a/b/c").lexically_relative("/x/y") == "../../a/b/c");
+    BOOST_TEST(path("/a/b/c").lexically_relative("/x/y/z") == "../../../a/b/c");
+
+    // paths unrelated
+    BOOST_TEST(path("a/b/c").lexically_relative("x") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("x/y") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("x/y/z") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("/x") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("/x/y") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("/x/y/z") == "");
+    BOOST_TEST(path("a/b/c").lexically_relative("/a/b/c") == "");
+
+    // TODO: add some Windows-only test cases that probe presence or absence of
+    // drive specifier-and root-directory
+
+    //  Some tests from Jamie Allsop's paper
+    BOOST_TEST(path("/a/d").lexically_relative("/a/b/c") == "../../d");
+    BOOST_TEST(path("/a/b/c").lexically_relative("/a/d") == "../b/c");
+  #ifdef BOOST_WINDOWS_API
+    BOOST_TEST(path("c:\\y").lexically_relative("c:\\x") == "../y");
+  #else
+    BOOST_TEST(path("c:\\y").lexically_relative("c:\\x") == "");
+  #endif
+    BOOST_TEST(path("d:\\y").lexically_relative("c:\\x") == "");
+
+    //  From issue #1976
+    BOOST_TEST(path("/foo/new").lexically_relative("/foo/bar") == "../new");
+  }
+
+  void lexically_proximate_test()
+  {
+    cout << "lexically_proximate_test..." << endl;
+    // paths unrelated
+    BOOST_TEST(path("a/b/c").lexically_proximate("x") == "a/b/c");
+  }
+}  // unnamed namespace
+
+//--------------------------------------------------------------------------------------//
+//                                                                                      //
+//                                     main                                             //
+//                                                                                      //
+//--------------------------------------------------------------------------------------//
+
+int test_main(int, char*[])
+{
+// document state of critical macros
+#ifdef BOOST_POSIX_API
+  cout << "BOOST_POSIX_API" << endl;
+#endif
+#ifdef BOOST_WINDOWS_API
+  cout << "BOOST_WINDOWS_API" << endl;
+#endif
+
+  lexically_relative_test();
+  lexically_proximate_test();
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/sample_test.cpp b/src/boost/libs/filesystem/test/sample_test.cpp
new file mode 100644
index 00000000..563a6f92
--- /dev/null
+++ b/src/boost/libs/filesystem/test/sample_test.cpp
@@ -0,0 +1,63 @@
+//  filesystem sample_test.cpp  ----------------------------------------------//
+
+//  Copyright Beman Dawes 2012
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  --------------------------------------------------------------------------//
+//
+//  This program provides a template for bug reporting test cases.
+//
+//  --------------------------------------------------------------------------//
+
+#include <boost/config/warning_disable.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <iostream>
+#include <string>
+#include <cstring>
+#ifndef BOOST_LIGHTWEIGHT_MAIN
+#  include <boost/test/prg_exec_monitor.hpp>
+#else
+#  include <boost/detail/lightweight_main.hpp>
+#endif
+
+namespace fs = boost::filesystem;
+using fs::path;
+using std::cout;
+using std::endl;
+using std::string;
+using std::wstring;
+
+namespace
+{
+  bool cleanup = true;
+}
+
+//  cpp_main  ----------------------------------------------------------------//
+
+int cpp_main(int argc, char* argv[])
+{
+  if (argc > 1 && std::strcmp(argv[1], "--no-cleanup") == 0)
+    cleanup = false;
+
+  //  Test cases go after this block of comments
+  //    Use test case macros from boost/detail/lightweight_test.hpp:
+  //
+  //    BOOST_TEST(predicate);  // test passes if predicate evaluates to true
+  //    BOOST_TEST_EQ(x, y);    // test passes if x == y
+  //    BOOST_TEST_NE(x, y);    // test passes if x != y
+  //    BOOST_ERROR(msg);       // test fails, outputs msg
+  //    Examples:
+  //      BOOST_TEST(path("f00").size() == 3);   // test passes
+  //      BOOST_TEST_EQ(path("f00").size(), 3);  // test passes
+  //      BOOST_MSG("Oops!");  // test fails, outputs "Oops!"
+
+  if (cleanup)
+  {
+    // Remove any test files or directories here
+  }
+
+  return ::boost::report_errors();
+}
diff --git a/src/boost/libs/filesystem/test/test_codecvt.hpp b/src/boost/libs/filesystem/test/test_codecvt.hpp
new file mode 100644
index 00000000..666805ec
--- /dev/null
+++ b/src/boost/libs/filesystem/test/test_codecvt.hpp
@@ -0,0 +1,79 @@
+//  test_codecvt.hpp  ------------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2009, 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+#ifndef BOOST_FILESYSTEM3_TEST_CODECVT_HPP
+#define BOOST_FILESYSTEM3_TEST_CODECVT_HPP
+
+#include <boost/filesystem/config.hpp>
+#include <locale>
+#include <cwchar>  // for mbstate_t
+
+  //------------------------------------------------------------------------------------//
+  //                                                                                    //
+  //                              class test_codecvt                                    //
+  //                                                                                    //
+  //  Warning: partial implementation; even do_in and do_out only partially meet the    //
+  //  standard library specifications as the "to" buffer must hold the entire result.   //
+  //                                                                                    //
+  //  The value of a wide character is the value of the corresponding narrow character  //
+  //  plus 1. This ensures that compares against expected values will fail if the       //
+  //  code conversion did not occur as expected.                                        //
+  //                                                                                    //
+  //------------------------------------------------------------------------------------//
+
+  class test_codecvt
+    : public std::codecvt< wchar_t, char, std::mbstate_t >  
+  {
+  public:
+    explicit test_codecvt()
+        : std::codecvt<wchar_t, char, std::mbstate_t>() {}
+  protected:
+
+    virtual bool do_always_noconv() const throw() { return false; }
+
+    virtual int do_encoding() const throw() { return 0; }
+
+    virtual std::codecvt_base::result do_in(std::mbstate_t&, 
+      const char* from, const char* from_end, const char*& from_next,
+      wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const
+    {
+      for (; from != from_end && to != to_end; ++from, ++to)
+        *to = wchar_t(*from + 1);
+      if (to == to_end)
+        return error;
+      *to = L'\0';
+      from_next = from;
+      to_next = to;
+      return ok;
+   }
+
+    virtual std::codecvt_base::result do_out(std::mbstate_t&,
+      const wchar_t* from, const wchar_t* from_end, const wchar_t*& from_next,
+      char* to, char* to_end, char*& to_next) const
+    {
+      for (; from != from_end && to != to_end; ++from, ++to)
+        *to = static_cast<char>(*from - 1);
+      if (to == to_end)
+        return error;
+      *to = '\0';
+      from_next = from;
+      to_next = to;
+      return ok;
+    }
+
+    virtual std::codecvt_base::result do_unshift(std::mbstate_t&,
+        char* /*from*/, char* /*to*/, char* & /*next*/) const  { return ok; } 
+
+    virtual int do_length(std::mbstate_t&,
+      const char* /*from*/, const char* /*from_end*/, std::size_t /*max*/) const  { return 0; }
+
+    virtual int do_max_length() const throw () { return 0; }
+  };
+
+#endif  // BOOST_FILESYSTEM3_TEST_CODECVT_HPP
diff --git a/src/boost/libs/filesystem/test/test_links.html b/src/boost/libs/filesystem/test/test_links.html
new file mode 100644
index 00000000..08c4b35d
--- /dev/null
+++ b/src/boost/libs/filesystem/test/test_links.html
@@ -0,0 +1,1405 @@
+<html>
+<head>
+<title>Boost Test Details</title>
+</head>
+<body bgcolor="#ffffff" text="#000000">
+<table border="0">
+<tr>
+<td><img border="0" src="http://www.boost.org/boost.png" width="277" height="86"></td>
+<td>
+<h1>Boost Test Details - Win32</h1>
+<b>Run Date:</b> 10:58:37 UTC, Thursday 24 August 2017
+</td>
+</table>
+<br>
+<h2><a name="filesystem-config_info-gcc-mingw-c++03">filesystem - config_info - gcc-mingw-c++03</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: [not defined]
+  __MINGW32__: 1
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info-gcc-mingw-c++11">filesystem - config_info - gcc-mingw-c++11</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: [not defined]
+  __MINGW32__: 1
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info-gcc-mingw-c++14">filesystem - config_info - gcc-mingw-c++14</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: [not defined]
+  __MINGW32__: 1
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info-msvc-11.0">filesystem - config_info - msvc-11.0</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1700
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info-msvc-12.0">filesystem - config_info - msvc-12.0</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1800
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info-msvc-14.0">filesystem - config_info - msvc-14.0</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1900
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info-msvc-14.1">filesystem - config_info - msvc-14.1</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: 1
+  BOOST_FILESYSTEM_STATIC_LINK: [not defined]
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1911
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-gcc-mingw-c++03">filesystem - config_info_static - gcc-mingw-c++03</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: [not defined]
+  __MINGW32__: 1
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-gcc-mingw-c++11">filesystem - config_info_static - gcc-mingw-c++11</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: [not defined]
+  __MINGW32__: 1
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-gcc-mingw-c++14">filesystem - config_info_static - gcc-mingw-c++14</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: [not defined]
+  __MINGW32__: 1
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-msvc-11.0">filesystem - config_info_static - msvc-11.0</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1700
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-msvc-12.0">filesystem - config_info_static - msvc-12.0</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1800
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-msvc-14.0">filesystem - config_info_static - msvc-14.0</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1900
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-config_info_static-msvc-14.1">filesystem - config_info_static - msvc-14.1</a></h2>
+<h3>Run output:</h3><pre>
+Verify macro reporting works correctly
+  NOSUCHMACRO: [not defined]
+  SUCHAMACRO: [no value]
+  BOOST_VERSION: 106600
+Report macro values that may be useful in debugging various test programs
+  BOOST_VERSION: 106600
+  BOOST_FILESYSTEM_VERSION: 3
+  BOOST_FILESYSTEM_DEPRECATED: [not defined]
+  BOOST_FILESYSTEM_SOURCE: [not defined]
+  BOOST_FILESYSTEM_DYN_LINK: [not defined]
+  BOOST_FILESYSTEM_STATIC_LINK: 1
+  BOOST_ALL_NO_LIB: 1
+  BOOST_FILESYSTEM_NO_LIB: [no value]
+  BOOST_LIB_NAME: [not defined]
+  BOOST_POSIX_API: [not defined]
+  BOOST_WINDOWS_API: [no value]
+  _MSC_VER: 1911
+  __MINGW32__: [not defined]
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-fstream_test-msvc-11.0">filesystem - fstream_test - msvc-11.0</a></h2>
+<h3>Compiler output:</h3><pre>
+fstream_test.cpp
+C:\boost\develop\boost/filesystem/fstream.hpp(162) : warning C4250: 'boost::filesystem::basic_fstream&lt;charT&gt;' : inherits 'std::basic_istream&lt;_Elem,_Traits&gt;::std::basic_istream&lt;_Elem,_Traits&gt;::_Add_vtordisp1' via dominance
+        with
+        [
+            charT=char
+        ]
+        and
+        [
+            _Elem=char,
+            _Traits=std::char_traits&lt;char&gt;
+        ]
+        and
+        [
+            _Elem=char,
+            _Traits=std::char_traits&lt;char&gt;
+        ]
+        C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\INCLUDE\istream(74) : see declaration of 'std::basic_istream&lt;_Elem,_Traits&gt;::_Add_vtordisp1'
+        with
+        [
+            _Elem=char,
+            _Traits=std::char_traits&lt;char&gt;
+        ]
+        fstream_test.cpp(114) : see reference to class template instantiation 'boost::filesystem::basic_fstream&lt;charT&gt;' being compiled
+        with
+        [
+            charT=char
+        ]
+C:\boost\develop\boost/filesystem/fstream.hpp(162) : warning C4250: 'boost::filesystem::basic_fstream&lt;charT&gt;' : inherits 'std::basic_ostream&lt;_Elem,_Traits&gt;::std::basic_ostream&lt;_Elem,_Traits&gt;::_Add_vtordisp2' via dominance
+        with
+        [
+            charT=char
+        ]
+        and
+        [
+            _Elem=char,
+            _Traits=std::char_traits&lt;char&gt;
+        ]
+        and
+        [
+            _Elem=char,
+            _Traits=std::char_traits&lt;char&gt;
+        ]
+        C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\INCLUDE\ostream(90) : see declaration of 'std::basic_ostream&lt;_Elem,_Traits&gt;::_Add_vtordisp2'
+        with
+        [
+            _Elem=char,
+            _Traits=std::char_traits&lt;char&gt;
+        ]
+</pre>
+<h2><a name="filesystem-locale_info-gcc-mingw-c++03">filesystem - locale_info - gcc-mingw-c++03</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-locale_info-gcc-mingw-c++11">filesystem - locale_info - gcc-mingw-c++11</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-locale_info-gcc-mingw-c++14">filesystem - locale_info - gcc-mingw-c++14</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-locale_info-msvc-11.0">filesystem - locale_info - msvc-11.0</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-locale_info-msvc-12.0">filesystem - locale_info - msvc-12.0</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-locale_info-msvc-14.0">filesystem - locale_info - msvc-14.0</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-locale_info-msvc-14.1">filesystem - locale_info - msvc-14.1</a></h2>
+<h3>Run output:</h3><pre>
+LANG environmental variable is not present
+
+locale default construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale()) is true
+
+locale("") construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale("")) is true
+
+locale(locale::classic()) copy construction OK
+has_facet&lt;std::codecvt&lt;wchar_t, char, std::mbstate_t&gt; &gt;(locale::classic()) is true
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-gcc-mingw-c++03">filesystem - operations_test - gcc-mingw-c++03</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793983430656
+  available = 793983430656
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_directory_symlink: The request is not supported: "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc\f1", "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc\f1" to "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:56:29 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:56:29 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-755c-8ccc\Temp"
+temp_directory_path() returned "op-test-755c-8ccc\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-755c-8ccc"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-gcc-mingw-c++11">filesystem - operations_test - gcc-mingw-c++11</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793982644224
+  available = 793982644224
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_directory_symlink: The request is not supported: "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a\f1", "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a\f1" to "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:56:50 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:56:50 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-e3e5-bc1a\Temp"
+temp_directory_path() returned "op-test-e3e5-bc1a\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-e3e5-bc1a"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-gcc-mingw-c++14">filesystem - operations_test - gcc-mingw-c++14</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793980874752
+  available = 793980874752
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_directory_symlink: The request is not supported: "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2\f1", "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2\f1" to "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:57:11 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:57:11 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-244d-0ad2\Temp"
+temp_directory_path() returned "op-test-244d-0ad2\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-244d-0ad2"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-msvc-11.0">filesystem - operations_test - msvc-11.0</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793979273216
+  available = 793979273216
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_symlink: A required privilege is not held by the client: "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1\f1", "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1\f1" to "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:57:29 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:57:29 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-3fc0-59b1\Temp"
+temp_directory_path() returned "op-test-3fc0-59b1\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-3fc0-59b1"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-msvc-12.0">filesystem - operations_test - msvc-12.0</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793978023936
+  available = 793978023936
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_symlink: A required privilege is not held by the client: "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d\f1", "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d\f1" to "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:57:44 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:57:44 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-c50b-e30d\Temp"
+temp_directory_path() returned "op-test-c50b-e30d\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-c50b-e30d"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-msvc-14.0">filesystem - operations_test - msvc-14.0</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793971998720
+  available = 793971998720
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-d745-8190"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-d745-8190\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_symlink: A required privilege is not held by the client: "C:\boost\develop\libs\filesystem\test\op-test-d745-8190\f1", "C:\boost\develop\libs\filesystem\test\op-test-d745-8190\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-d745-8190\f1" to "C:\boost\develop\libs\filesystem\test\op-test-d745-8190\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:58:01 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:58:01 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-d745-8190\Temp"
+temp_directory_path() returned "op-test-d745-8190\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-d745-8190"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test-msvc-14.1">filesystem - operations_test - msvc-14.1</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+API is Windows
+initial_path() is "C:\boost\develop\libs\filesystem\test"
+"C:", "/", "boost", "develop", "libs", "filesystem", "test"
+sizeof(boost::uintmax_t) = 8
+initial_tests...
+  current_path().string() is
+  "C:\boost\develop\libs\filesystem\test"
+
+predicate_and_status_tests...
+exception_tests...
+  catch runtime_error by value
+  catch system_error by value
+  catch filesystem_error by value
+  catch filesystem_error by const reference
+
+Warning: line 376 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+  exception_tests complete
+create_directory_tests...
+  create_directory_tests complete
+current_directory_tests...
+space_tests...
+   capacity = 1023159562240
+       free = 793972551680
+  available = 793972551680
+creating test directories and files in "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1"
+status_of_nonexistent_tests...
+status_error_reporting_tests...
+directory_iterator_tests...
+  directory_iterator_tests complete
+create_directories_tests...
+    p is "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1\level1/.\level2/./..\level3/"
+equivalent_tests...
+
+Warning: line 1893 exception reports default_error_condition().value() 50, should be 2
+ value() is 50
+create_hard_link_tests...
+     *** For information only ***
+     create_hard_link() succeeded
+create_symlink_tests...
+     *** For information only ***
+     create_symlink() attempt failed
+     filesystem_error.what() reports: boost::filesystem::create_symlink: A required privilege is not held by the client: "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1\f1", "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1\f4"
+     create_symlink() may not be supported on this operating system or file system
+resize_file_tests...
+absolute_tests...
+canonical_basic_tests...
+  init: "C:\boost\develop\libs\filesystem\test"
+  root: "C:\"
+  first: "boost"
+  expected: "C:\boost"
+permissions_tests...
+copy_file_tests...
+ copy "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1\f1" to "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1\d1\f2"
+ copy complete
+iterator_status_tests...
+recursive_directory_iterator_tests...
+  with error_code argument
+  recursive_directory_iterator_tests complete
+recursive_iterator_status_tests...
+rename_tests...
+remove_tests...
+write_time_tests...
+
+  UTC last_write_time() for a file just created is Thu Aug 24 10:58:22 2017
+
+
+  Year is 117
+  Change year to 116
+  last_write_time() for the file is now Wed Aug 24 10:58:22 2016
+
+
+  Reset to current time
+  original last_write_time() - current last_write_time() is 0 seconds
+temp_directory_path_tests...
+Fallback test, temp_directory_path() returned "C:\WINDOWS\Temp"
+temp_directory_path() returned "op-test-b992-a0a1\Temp"
+temp_directory_path() returned "op-test-b992-a0a1\Temp"
+Windows specific tests...
+  (may take several seconds)
+
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-test-b992-a0a1"
+post-test removal complete
+returning from main()
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_test_static-gcc-mingw-c++03">filesystem - operations_test_static - gcc-mingw-c++03</a></h2>
+<h3>Compiler output:</h3><pre>
+link.hardlink ..\..\..\boost\utility.hpp
+Hardlink created for ..\..\..\boost\utility.hpp &lt;&lt;===&gt;&gt; ..\..\utility\include\boost\utility.hpp
+link.hardlink ..\..\..\boost\utility\base_from_member.hpp
+Hardlink created for ..\..\..\boost\utility\base_from_member.hpp &lt;&lt;===&gt;&gt; ..\..\utility\include\boost\utility\base_from_member.hpp
+link.hardlink ..\..\..\boost\utility\binary.hpp
+Hardlink created for ..\..\..\boost\utility\binary.hpp &lt;&lt;===&gt;&gt; ..\..\utility\include\boost\utility\binary.hpp
+link.hardlink ..\..\..\boost\utility\identity_type.hpp
+Hardlink created for ..\..\..\boost\utility\identity_type.hpp &lt;&lt;===&gt;&gt; ..\..\utility\include\boost\utility\identity_type.hpp
+link.hardlink ..\..\..\boost\next_prior.hpp
+Hardlink created for ..\..\..\boost\next_prior.hpp &lt;&lt;===&gt;&gt; ..\..\utility\include\boost\next_prior.hpp
+link.hardlink ..\..\..\boost\detail\lightweight_test_report.hpp
+Hardlink created for ..\..\..\boost\detail\lightweight_test_report.hpp &lt;&lt;===&gt;&gt; ..\..\detail\include\boost\detail\lightweight_test_report.hpp
+</pre>
+<h2><a name="filesystem-operations_unit_test-gcc-mingw-c++03">filesystem - operations_unit_test - gcc-mingw-c++03</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__attribute__((__dllimport__))
+BOOST_SYMBOL_VISIBLE=__attribute__((__visibility__("default")))
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"dd87-ef40-4926-6938"
+"foo-ea70b-be93e-bar"
+"foo-e7335-10cdc-5d03c-5a3c9-f4650-f1021-7b6be-5019-bar"
+"foo-f7a8a-993d9-6f777-00134-3ed50-2fbcb-1e8f4-f2a70-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-8c2b-524a-cd05"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_unit_test-gcc-mingw-c++11">filesystem - operations_unit_test - gcc-mingw-c++11</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__attribute__((__dllimport__))
+BOOST_SYMBOL_VISIBLE=__attribute__((__visibility__("default")))
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"754f-7b1a-3be6-e5c0"
+"foo-4bb0f-4d882-bar"
+"foo-ac642-09a4f-6aa7e-ea2d7-457da-b2948-53f4a-bad3-bar"
+"foo-ae2bd-64c16-22117-8a86b-44e97-c20ea-8af66-1675e-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-3440-0e3f-4e7e"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_unit_test-gcc-mingw-c++14">filesystem - operations_unit_test - gcc-mingw-c++14</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__attribute__((__dllimport__))
+BOOST_SYMBOL_VISIBLE=__attribute__((__visibility__("default")))
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"7d80-f2f3-aeaa-b6c7"
+"foo-a01ed-b1b33-bar"
+"foo-4a551-dd753-dfa25-ed9a7-acb54-098df-6a620-a70f-bar"
+"foo-12c8d-06744-bd437-89fdc-a2c34-95e8f-a414d-b94be-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-e67e-bad2-8279"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_unit_test-msvc-11.0">filesystem - operations_unit_test - msvc-11.0</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__declspec(dllimport)
+BOOST_SYMBOL_VISIBLE=
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"1ab4-8841-b0fc-e647"
+"foo-efb46-79c29-bar"
+"foo-59896-324e8-bdbd6-a42eb-de915-1ec1a-ce99d-4067-bar"
+"foo-1910a-90280-34d2b-ef1c2-71af0-a0b5e-08faf-f5b1f-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-9db7-fe9c-d2e3"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_unit_test-msvc-12.0">filesystem - operations_unit_test - msvc-12.0</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__declspec(dllimport)
+BOOST_SYMBOL_VISIBLE=
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"8e2b-71ce-2521-a7db"
+"foo-848dc-69884-bar"
+"foo-4aa5a-9c482-8cbc0-d1620-52975-427ef-977b7-8d85-bar"
+"foo-539a8-bbd78-dc935-e4685-222d2-5fadc-eca06-d3123-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-56c9-60bb-08e3"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_unit_test-msvc-14.0">filesystem - operations_unit_test - msvc-14.0</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__declspec(dllimport)
+BOOST_SYMBOL_VISIBLE=
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"f2ef-9c9a-bba1-2da9"
+"foo-2d9f5-883e8-bar"
+"foo-a6ab7-95190-f84db-88e6f-6ea6f-656af-d1520-c648-bar"
+"foo-f88e8-f15db-7b6a4-ef286-132b5-df468-819e2-8d568-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-1334-a91e-c0f5"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-operations_unit_test-msvc-14.1">filesystem - operations_unit_test - msvc-14.1</a></h2>
+<h3>Run output:</h3><pre>
+BOOST_WINDOWS_API is defined
+BOOST_FILESYSTEM_DECL=__declspec(dllimport)
+BOOST_SYMBOL_VISIBLE=
+current_path() is C:\boost\develop\libs\filesystem\test
+file_status test...
+  status(".") permissions are 666
+  symlink_status(".") permissions are 666
+query test...
+directory_iterator_test...
+directory_iterator_test complete
+recursive_directory_iterator_test...
+recursive_directory_iterator_test complete
+operations test...
+directory_entry test...
+directory_entry overload test...
+error handling test...
+
+as expected, attempt to get size of non-existent file threw a filesystem_error
+what() returns boost::filesystem::file_size: The system cannot find the file specified: "no-such-file"
+string_file_tests...
+"1f6b-83e8-b538-782f"
+"foo-4e6c4-de2ee-bar"
+"foo-1703a-adf72-ff6a8-cf07d-fcdec-818b0-3c067-0292-bar"
+"foo-b7e03-522a0-89b5a-3fa32-6fa98-df460-6be3a-7acdc-bar"
+testing complete
+post-test removal of "C:\boost\develop\libs\filesystem\test\op-unit_test-b9c6-6436-60ba"
+post-test removal complete
+No errors detected.
+ 
+EXIT STATUS: 0 
+</pre>
+<h2><a name="filesystem-path_test-gcc-mingw-c++03">filesystem - path_test - gcc-mingw-c++03</a></h2>
+<h3>Compiler output:</h3><pre>
+link.hardlink ..\..\..\boost\smart_ptr.hpp
+Hardlink created for ..\..\..\boost\smart_ptr.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\smart_ptr.hpp
+link.hardlink ..\..\..\boost\scoped_ptr.hpp
+Hardlink created for ..\..\..\boost\scoped_ptr.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\scoped_ptr.hpp
+link.hardlink ..\..\..\boost\shared_array.hpp
+Hardlink created for ..\..\..\boost\shared_array.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\shared_array.hpp
+link.hardlink ..\..\..\boost\weak_ptr.hpp
+Hardlink created for ..\..\..\boost\weak_ptr.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\weak_ptr.hpp
+link.hardlink ..\..\..\boost\intrusive_ptr.hpp
+Hardlink created for ..\..\..\boost\intrusive_ptr.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\intrusive_ptr.hpp
+link.hardlink ..\..\..\boost\enable_shared_from_this.hpp
+Hardlink created for ..\..\..\boost\enable_shared_from_this.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\enable_shared_from_this.hpp
+link.hardlink ..\..\..\boost\make_shared.hpp
+Hardlink created for ..\..\..\boost\make_shared.hpp &lt;&lt;===&gt;&gt; ..\..\smart_ptr\include\boost\make_shared.hpp
+link.hardlink ..\..\..\boost\integer_fwd.hpp
+Hardlink created for ..\..\..\boost\integer_fwd.hpp &lt;&lt;===&gt;&gt; ..\..\integer\include\boost\integer_fwd.hpp
+link.hardlink ..\..\..\boost\detail\container_fwd.hpp
+Hardlink created for ..\..\..\boost\detail\container_fwd.hpp &lt;&lt;===&gt;&gt; ..\..\detail\include\boost\detail\container_fwd.hpp
+</pre>
+</body>
+</html>
diff --git a/src/boost/libs/filesystem/test/test_status.html b/src/boost/libs/filesystem/test/test_status.html
new file mode 100644
index 00000000..e20ee228
--- /dev/null
+++ b/src/boost/libs/filesystem/test/test_status.html
@@ -0,0 +1,56 @@
+<html>
+<head>
+<title>Boost Test Results</title>
+</head>
+<body bgcolor="#ffffff" text="#000000">
+<table border="0">
+<tr>
+<td><img border="0" src="http://www.boost.org/boost.png" width="277" height="86"></td>
+<td>
+<h1>Boost Test Results - Win32</h1>
+<b>Run</b> 10:58:37 UTC, Thursday 24 August 2017
+</td>
+</table>
+<br>
+<table border="1" cellspacing="0" cellpadding="5">
+<tr><td>Library</td><td>Test Name</td>
+<td><a href="compiler_status.html#test-type">Test Type</a></td>
+<td>gcc-mingw-c++03</td>
+<td>gcc-mingw-c++11</td>
+<td>gcc-mingw-c++14</td>
+<td>msvc-11.0</td>
+<td>msvc-12.0</td>
+<td>msvc-14.0</td>
+<td>msvc-14.1</td>
+</tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/example/file_status.cpp">file_status</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/example/simple_ls.cpp">simple_ls</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/config_info.cpp">config_info</a></td><td>run</td><td><a href="test_links.html#filesystem-config_info-gcc-mingw-c++03">Pass</a></td><td><a href="test_links.html#filesystem-config_info-gcc-mingw-c++11">Pass</a></td><td><a href="test_links.html#filesystem-config_info-gcc-mingw-c++14">Pass</a></td><td><a href="test_links.html#filesystem-config_info-msvc-11.0">Pass</a></td><td><a href="test_links.html#filesystem-config_info-msvc-12.0">Pass</a></td><td><a href="test_links.html#filesystem-config_info-msvc-14.0">Pass</a></td><td><a href="test_links.html#filesystem-config_info-msvc-14.1">Pass</a></td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/config_info.cpp">config_info_static</a></td><td>run</td><td><a href="test_links.html#filesystem-config_info_static-gcc-mingw-c++03">Pass</a></td><td><a href="test_links.html#filesystem-config_info_static-gcc-mingw-c++11">Pass</a></td><td><a href="test_links.html#filesystem-config_info_static-gcc-mingw-c++14">Pass</a></td><td><a href="test_links.html#filesystem-config_info_static-msvc-11.0">Pass</a></td><td><a href="test_links.html#filesystem-config_info_static-msvc-12.0">Pass</a></td><td><a href="test_links.html#filesystem-config_info_static-msvc-14.0">Pass</a></td><td><a href="test_links.html#filesystem-config_info_static-msvc-14.1">Pass</a></td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/convenience_test.cpp">convenience_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/deprecated_test.cpp">deprecated_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/fstream_test.cpp">fstream_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td><a href="test_links.html#filesystem-fstream_test-msvc-11.0"><i>Warn</i></a></td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/large_file_support_test.cpp">large_file_support_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/locale_info.cpp">locale_info</a></td><td>run</td><td><a href="test_links.html#filesystem-locale_info-gcc-mingw-c++03">Pass</a></td><td><a href="test_links.html#filesystem-locale_info-gcc-mingw-c++11">Pass</a></td><td><a href="test_links.html#filesystem-locale_info-gcc-mingw-c++14">Pass</a></td><td><a href="test_links.html#filesystem-locale_info-msvc-11.0">Pass</a></td><td><a href="test_links.html#filesystem-locale_info-msvc-12.0">Pass</a></td><td><a href="test_links.html#filesystem-locale_info-msvc-14.0">Pass</a></td><td><a href="test_links.html#filesystem-locale_info-msvc-14.1">Pass</a></td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/macro_default_test.cpp">macro_default_test</a></td><td>compile</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/odr1_test.cpp">odr1_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/operations_test.cpp">operations_test</a></td><td>run</td><td><a href="test_links.html#filesystem-operations_test-gcc-mingw-c++03">Pass</a></td><td><a href="test_links.html#filesystem-operations_test-gcc-mingw-c++11">Pass</a></td><td><a href="test_links.html#filesystem-operations_test-gcc-mingw-c++14">Pass</a></td><td><a href="test_links.html#filesystem-operations_test-msvc-11.0">Pass</a></td><td><a href="test_links.html#filesystem-operations_test-msvc-12.0">Pass</a></td><td><a href="test_links.html#filesystem-operations_test-msvc-14.0">Pass</a></td><td><a href="test_links.html#filesystem-operations_test-msvc-14.1">Pass</a></td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/operations_test.cpp">operations_test_static</a></td><td>run</td><td><a href="test_links.html#filesystem-operations_test_static-gcc-mingw-c++03"><i>Warn</i></a></td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/operations_unit_test.cpp">operations_unit_test</a></td><td>run</td><td><a href="test_links.html#filesystem-operations_unit_test-gcc-mingw-c++03">Pass</a></td><td><a href="test_links.html#filesystem-operations_unit_test-gcc-mingw-c++11">Pass</a></td><td><a href="test_links.html#filesystem-operations_unit_test-gcc-mingw-c++14">Pass</a></td><td><a href="test_links.html#filesystem-operations_unit_test-msvc-11.0">Pass</a></td><td><a href="test_links.html#filesystem-operations_unit_test-msvc-12.0">Pass</a></td><td><a href="test_links.html#filesystem-operations_unit_test-msvc-14.0">Pass</a></td><td><a href="test_links.html#filesystem-operations_unit_test-msvc-14.1">Pass</a></td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/path_test.cpp">path_test</a></td><td>run</td><td><a href="test_links.html#filesystem-path_test-gcc-mingw-c++03"><i>Warn</i></a></td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/path_test.cpp">path_test_static</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/path_unit_test.cpp">path_unit_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/path_unit_test.cpp">path_unit_test_static</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem">filesystem</a></td><td><a href="http://svn.boost.org/trac/boost/browser/trunk//libs/filesystem/test/relative_test.cpp">relative_test</a></td><td>run</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td><td>Pass</td></tr>
+<tr> <td> &nbsp;</td><td>Number of Failures</td><td> &nbsp;</td>
+<td align="center">0</td>
+<td align="center">0</td>
+<td align="center">0</td>
+<td align="center">0</td>
+<td align="center">0</td>
+<td align="center">0</td>
+<td align="center">0</td>
+</tr>
+</table>
+</body>
+</html>
diff --git a/src/boost/libs/filesystem/test/windows_attributes.cpp b/src/boost/libs/filesystem/test/windows_attributes.cpp
new file mode 100644
index 00000000..445e2ebd
--- /dev/null
+++ b/src/boost/libs/filesystem/test/windows_attributes.cpp
@@ -0,0 +1,108 @@
+//  windows_attributes  ----------------------------------------------------------------//
+
+//  Copyright Beman Dawes 2010
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  Library home page: http://www.boost.org/libs/filesystem
+
+//--------------------------------------------------------------------------------------//
+
+//                   Useful for debugging status related issues                         //
+
+//--------------------------------------------------------------------------------------//
+
+#include <boost/filesystem.hpp>
+#include <boost/detail/lightweight_main.hpp>
+#include <windows.h>
+#include <map>
+#include <utility>
+#include <iostream>
+#include <string>
+
+using std::make_pair;
+namespace fs = boost::filesystem;
+
+int cpp_main( int argc, char* argv[])
+{
+  typedef std::map<DWORD, std::string> decode_type;
+  decode_type table;
+
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_ARCHIVE, "FILE_ATTRIBUTE_ARCHIVE"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_COMPRESSED, "FILE_ATTRIBUTE_COMPRESSED"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_DEVICE, "FILE_ATTRIBUTE_DEVICE"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_DIRECTORY, "FILE_ATTRIBUTE_DIRECTORY"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_ENCRYPTED, "FILE_ATTRIBUTE_ENCRYPTED"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_HIDDEN, "FILE_ATTRIBUTE_HIDDEN"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_NOT_CONTENT_INDEXED, "FILE_ATTRIBUTE_NOT_CONTENT_INDEXED"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_OFFLINE, "FILE_ATTRIBUTE_OFFLINE"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_READONLY, "FILE_ATTRIBUTE_READONLY"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_REPARSE_POINT, "FILE_ATTRIBUTE_REPARSE_POINT"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_SPARSE_FILE, "FILE_ATTRIBUTE_SPARSE_FILE"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_SYSTEM, "FILE_ATTRIBUTE_SYSTEM"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_TEMPORARY, "FILE_ATTRIBUTE_TEMPORARY"));
+  table.insert(make_pair<DWORD, std::string>(FILE_ATTRIBUTE_VIRTUAL, "FILE_ATTRIBUTE_VIRTUAL"));
+
+  if (argc < 2)
+  {
+    std::cout << "Usage: windows_attributes path\n";
+    return 1;
+  }
+
+  //  report Win32  ::GetFileAttributesA()
+
+  DWORD at(::GetFileAttributesA(argv[1]));
+  if (at == INVALID_FILE_ATTRIBUTES)
+  {
+    std::cout << "GetFileAttributes(\"" << argv[1]
+              << "\") returned INVALID_FILE_ATTRIBUTES\n";
+    return 0;
+  }
+
+  std::cout << "GetFileAttributes(\"" << argv[1]
+            << "\") returned ";
+
+  bool bar = false;
+  for (decode_type::iterator it = table.begin(); it != table.end(); ++it)
+  {
+    if (!(it->first & at))
+      continue;
+    if (bar)
+      std::cout << " | ";
+    bar = true;
+    std::cout << it->second;
+    at &= ~it->first;
+  }
+  std::cout << std::endl;
+
+  if (at)
+    std::cout << "plus unknown attributes " << at << std::endl;
+
+  //  report Boost Filesystem file_type
+
+  fs::file_status stat = fs::status(argv[1]);
+
+  const char* types[] =
+    {
+    "status_error",
+    "file_not_found",
+    "regular_file",
+    "directory_file",
+    // the following may not apply to some operating systems or file systems
+    "symlink_file",
+    "block_file",
+    "character_file",
+    "fifo_file",
+    "socket_file",
+    "reparse_file",  // Windows: FILE_ATTRIBUTE_REPARSE_POINT that is not a symlink
+    "type_unknown",  // file does exist", but isn't one of the above types or
+                   // we don't have strong enough permission to find its type
+
+    "_detail_directory_symlink"  // internal use only; never exposed to users
+  };
+
+  std::cout << "boost::filesystem::status().type() is " << types[stat.type()] << std::endl;
+
+  return 0;
+}
diff --git a/src/boost/libs/filesystem/tools/backup.bat b/src/boost/libs/filesystem/tools/backup.bat
new file mode 100644
index 00000000..d5157baa
--- /dev/null
+++ b/src/boost/libs/filesystem/tools/backup.bat
@@ -0,0 +1,27 @@
+@echo off
+
+rem  Copyright Beman Dawes 2011
+rem  Distributed under to the Boost Software License, Version 1.0 
+rem  See http://www.boost.org/LICENSE_1_0.txt
+
+if not $%1==$ goto ok
+:error
+echo Usage: backup target-directory-path
+goto done
+
+:ok
+mkdir %1\boost\filesystem 2>nul
+mkdir %1\libs\filesystem 2>nul
+
+set BOOST_CURRENT_ROOT=.
+:loop
+if exist %BOOST_CURRENT_ROOT%\boost-build.jam goto loopend
+set BOOST_CURRENT_ROOT=..\%BOOST_CURRENT_ROOT%
+goto loop
+:loopend
+
+xcopy /exclude:exclude.txt /y /d /k /r %BOOST_CURRENT_ROOT%\boost\filesystem.hpp %1\boost
+xcopy /exclude:exclude.txt /y /d /k /s /r %BOOST_CURRENT_ROOT%\boost\filesystem %1\boost\filesystem
+xcopy /exclude:exclude.txt /y /d /k /s /r %BOOST_CURRENT_ROOT%\libs\filesystem %1\libs\filesystem
+
+:done
diff --git a/src/boost/libs/filesystem/tools/exclude.txt b/src/boost/libs/filesystem/tools/exclude.txt
new file mode 100644
index 00000000..037de66e
--- /dev/null
+++ b/src/boost/libs/filesystem/tools/exclude.txt
@@ -0,0 +1,14 @@
+.svn
+.obj
+.exe
+.log
+.user
+.filters
+.sdf
+.ncb
+.ipch
+ipch
+Debug
+Release
+v3_operations_test
+temp_fs_test_dir
diff --git a/src/boost/libs/filesystem/tools/publish.bat b/src/boost/libs/filesystem/tools/publish.bat
new file mode 100644
index 00000000..e1ca8a97
--- /dev/null
+++ b/src/boost/libs/filesystem/tools/publish.bat
@@ -0,0 +1,8 @@
+copy /y c:\boost\modular\develop\libs\filesystem\doc\*.htm? C:\boost\filesystem-gh-pages
+pushd C:\boost\filesystem-gh-pages
+git commit -a -m "merge from develop"
+git push
+popd
+rem Copyright Beman Dawes, 2015
+rem Distributed under the Boost Software License, Version 1.0.
+rem See www.boost.org/LICENSE_1_0.txt
+\ No newline at end of file