Added six module as SCons.compat.six, for python3 port.

9 files changed, 722 insertions, 42 deletions

diff --git a/src/engine/SCons/MemoizeTests.py b/src/engine/SCons/MemoizeTests.py
index c1c69ae..8476349 100644
--- a/src/engine/SCons/MemoizeTests.py
+++ b/src/engine/SCons/MemoizeTests.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
-from six import add_metaclass
+from SCons.compat.six import add_metaclass
 
 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 
diff --git a/src/engine/SCons/Script/Main.py b/src/engine/SCons/Script/Main.py
index 0663c7a..1357e7f 100644
--- a/src/engine/SCons/Script/Main.py
+++ b/src/engine/SCons/Script/Main.py
@@ -12,7 +12,7 @@ it goes here.
 
 # Would affect exec()'d site_init.py:
 ## from __future__ import print_function
-from six import print_
+from SCons.compat.six import print_
 
 unsupported_python_version = (2, 3, 0)
 deprecated_python_version = (2, 7, 0)
diff --git a/src/engine/SCons/Taskmaster.py b/src/engine/SCons/Taskmaster.py
index 00147b2..4a06654 100644
--- a/src/engine/SCons/Taskmaster.py
+++ b/src/engine/SCons/Taskmaster.py
@@ -306,7 +306,7 @@ class Task(object):
                     t.push_to_cache()
                 t.built()
                 t.visited()
-                if (not print_prepare and 
+                if (not print_prepare and
                     (not hasattr(self, 'options') or not self.options.debug_includes)):
                     t.release_target_info()
             else:
@@ -424,7 +424,7 @@ class Task(object):
                 # parallel build...)
                 t.visited()
                 t.set_state(NODE_UP_TO_DATE)
-                if (not print_prepare and 
+                if (not print_prepare and
                     (not hasattr(self, 'options') or not self.options.debug_includes)):
                     t.release_target_info()
 
@@ -533,8 +533,8 @@ class Task(object):
         Task ready for execution.
         """
 
-        import six
-        six.reraise(*self.exc_info())
+        import SCons.compat.six
+        SCons.compat.six.reraise(*self.exc_info())
 
 class AlwaysTask(Task):
     def needs_execute(self):
@@ -940,7 +940,7 @@ class Taskmaster(object):
         executor = node.get_executor()
         if executor is None:
             return None
-        
+
         tlist = executor.get_all_targets()
 
         task = self.tasker(self, tlist, node in self.original_top, node)
diff --git a/src/engine/SCons/Tool/xgettext.py b/src/engine/SCons/Tool/xgettext.py
index f9375a2..923fd17 100644
--- a/src/engine/SCons/Tool/xgettext.py
+++ b/src/engine/SCons/Tool/xgettext.py
@@ -1,10 +1,10 @@
-""" xgettext tool 
+""" xgettext tool
 
 Tool specific initialization of `xgettext` tool.
 """
 
 # __COPYRIGHT__
-# 
+#
 # Permission is hereby granted, free of charge, to any person obtaining
 # a copy of this software and associated documentation files (the
 # "Software"), to deal in the Software without restriction, including
@@ -12,10 +12,10 @@ Tool specific initialization of `xgettext` tool.
 # distribute, sublicense, and/or sell copies of the Software, and to
 # permit persons to whom the Software is furnished to do so, subject to
 # the following conditions:
-# 
+#
 # The above copyright notice and this permission notice shall be included
 # in all copies or substantial portions of the Software.
-# 
+#
 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
@@ -23,7 +23,7 @@ Tool specific initialization of `xgettext` tool.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-from six import u
+from SCons.compat.six import u
 
 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 
@@ -40,12 +40,12 @@ class _CmdRunner(object):
     self.command = command
     self.commandstr = commandstr
 
-  def __call__(self, target, source, env): 
+  def __call__(self, target, source, env):
     import SCons.Action
     import subprocess
     import os
     import sys
-    kw = { 
+    kw = {
       'stdin'  : 'devnull',
       'stdout' : subprocess.PIPE,
       'stderr' : subprocess.PIPE,
@@ -105,9 +105,9 @@ def _update_pot_file(target, source, env):
   os.chdir(save_os_cwd)
   # If the command was not successfull, return error code.
   if status: return status
- 
+
   new_content = cmd.out
- 
+
   if not new_content:
     # When xgettext finds no internationalized messages, no *.pot is created
     # (because we don't want to bother translators with empty POT files).
@@ -145,7 +145,7 @@ def _update_pot_file(target, source, env):
     # Print message employing SCons.Action.Action for that.
     msg = "Not writting " + repr(str(target[0])) + " (" + explain + ")"
     env.Execute(SCons.Action.Action(nop, msg))
-    return 0 
+    return 0
 #############################################################################
 
 #############################################################################
@@ -208,7 +208,7 @@ def _scan_xgettext_from_files(target, source, env, files = None, path = None):
       contents = re_emptyln.sub("", contents)
       contents = re_trailws.sub("", contents)
       depnames = contents.splitlines()
-      for depname in depnames: 
+      for depname in depnames:
         depfile = SCons.Node.FS.find_file(depname, dirs)
         if not depfile:
           depfile = env.arg2nodes(depname, dirs[0].File)
@@ -223,7 +223,7 @@ def _pot_update_emitter(target, source, env):
   import SCons.Util
   import SCons.Node.FS
 
-  if 'XGETTEXTFROM' in env: 
+  if 'XGETTEXTFROM' in env:
     xfrom = env['XGETTEXTFROM']
   else:
     return target, source
@@ -231,13 +231,13 @@ def _pot_update_emitter(target, source, env):
     xfrom = [ xfrom ]
 
   xfrom = SCons.Util.flatten(xfrom)
-  
+
   # Prepare list of 'POTFILE.in' files.
   files = []
   for xf in xfrom:
     if not isinstance(xf, SCons.Node.FS.Base):
       if SCons.Util.is_String(xf):
-        # Interpolate variables in strings 
+        # Interpolate variables in strings
         xf = env.subst(xf, source = source, target = target)
       xf = env.arg2nodes(xf)
     files.extend(xf)
@@ -275,7 +275,7 @@ def generate(env,**kw):
   try:
     env['XGETTEXT'] = _detect_xgettext(env)
   except:
-    env['XGETTEXT'] = 'xgettext' 
+    env['XGETTEXT'] = 'xgettext'
   # NOTE: sources="$SOURCES" would work as well. However, we use following
   # construction to convert absolute paths provided by scons onto paths
   # relative to current working dir. Note, that scons expands $SOURCE(S) to
diff --git a/src/engine/SCons/Util.py b/src/engine/SCons/Util.py
index 052b3fc..3a368cb 100644
--- a/src/engine/SCons/Util.py
+++ b/src/engine/SCons/Util.py
@@ -23,7 +23,7 @@ Various utility functions go here.
 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-from six import PY2, PY3, u
+from SCons.compat.six import PY2, PY3, u
 
 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 
@@ -348,7 +348,7 @@ def is_Scalar(obj, isinstance=isinstance, StringTypes=StringTypes, SequenceTypes
     # assumes that the obj argument is a string must of the time.
     return isinstance(obj, StringTypes) or not isinstance(obj, SequenceTypes)
 
-def do_flatten(sequence, result, isinstance=isinstance, 
+def do_flatten(sequence, result, isinstance=isinstance,
                StringTypes=StringTypes, SequenceTypes=SequenceTypes):
     for item in sequence:
         if isinstance(item, StringTypes) or not isinstance(item, SequenceTypes):
@@ -356,7 +356,7 @@ def do_flatten(sequence, result, isinstance=isinstance,
         else:
             do_flatten(item, result)
 
-def flatten(obj, isinstance=isinstance, StringTypes=StringTypes, 
+def flatten(obj, isinstance=isinstance, StringTypes=StringTypes,
             SequenceTypes=SequenceTypes, do_flatten=do_flatten):
     """Flatten a sequence to a non-nested list.
 
@@ -374,7 +374,7 @@ def flatten(obj, isinstance=isinstance, StringTypes=StringTypes,
             do_flatten(item, result)
     return result
 
-def flatten_sequence(sequence, isinstance=isinstance, StringTypes=StringTypes, 
+def flatten_sequence(sequence, isinstance=isinstance, StringTypes=StringTypes,
                      SequenceTypes=SequenceTypes, do_flatten=do_flatten):
     """Flatten a sequence to a non-nested list.
 
@@ -395,7 +395,7 @@ def flatten_sequence(sequence, isinstance=isinstance, StringTypes=StringTypes,
 # to_String_for_signature() will use a for_signature() method if the
 # specified object has one.
 #
-def to_String(s, 
+def to_String(s,
               isinstance=isinstance, str=str,
               UserString=UserString, BaseStringTypes=BaseStringTypes):
     if isinstance(s,BaseStringTypes):
@@ -408,11 +408,11 @@ def to_String(s,
     else:
         return str(s)
 
-def to_String_for_subst(s, 
+def to_String_for_subst(s,
                         isinstance=isinstance, str=str, to_String=to_String,
                         BaseStringTypes=BaseStringTypes, SequenceTypes=SequenceTypes,
                         UserString=UserString):
-                        
+
     # Note that the test cases are sorted by order of probability.
     if isinstance(s, BaseStringTypes):
         return s
@@ -428,7 +428,7 @@ def to_String_for_subst(s,
     else:
         return str(s)
 
-def to_String_for_signature(obj, to_String_for_subst=to_String_for_subst, 
+def to_String_for_signature(obj, to_String_for_subst=to_String_for_subst,
                             AttributeError=AttributeError):
     try:
         f = obj.for_signature
@@ -486,7 +486,7 @@ def semi_deepcopy(x):
             return x.__class__(semi_deepcopy_dict(x))
         elif isinstance(x, UserList):
             return x.__class__(_semi_deepcopy_list(x))
-        
+
         return x
 
 
@@ -632,7 +632,7 @@ else:
         builtins.WindowsError = WindowsError
     else:
         del e
-        
+
     HKEY_CLASSES_ROOT = None
     HKEY_LOCAL_MACHINE = None
     HKEY_CURRENT_USER = None
@@ -741,7 +741,7 @@ else:
                     continue
         return None
 
-def PrependPath(oldpath, newpath, sep = os.pathsep, 
+def PrependPath(oldpath, newpath, sep = os.pathsep,
                 delete_existing=1, canonicalize=None):
     """This prepends newpath elements to the given oldpath.  Will only
     add any particular path once (leaving the first one it encounters
@@ -760,7 +760,7 @@ def PrependPath(oldpath, newpath, sep = os.pathsep,
     not move it to the beginning; it will stay where it is in the
     list.
 
-    If canonicalize is not None, it is applied to each element of 
+    If canonicalize is not None, it is applied to each element of
     newpath before use.
     """
 
@@ -782,7 +782,7 @@ def PrependPath(oldpath, newpath, sep = os.pathsep,
         newpaths=list(map(canonicalize, newpaths))
 
     if not delete_existing:
-        # First uniquify the old paths, making sure to 
+        # First uniquify the old paths, making sure to
         # preserve the first instance (in Unix/Linux,
         # the first one wins), and remembering them in normpaths.
         # Then insert the new paths at the head of the list
@@ -823,7 +823,7 @@ def PrependPath(oldpath, newpath, sep = os.pathsep,
     else:
         return sep.join(paths)
 
-def AppendPath(oldpath, newpath, sep = os.pathsep, 
+def AppendPath(oldpath, newpath, sep = os.pathsep,
                delete_existing=1, canonicalize=None):
     """This appends new path elements to the given old path.  Will
     only add any particular path once (leaving the last one it
@@ -841,7 +841,7 @@ def AppendPath(oldpath, newpath, sep = os.pathsep,
     If delete_existing is 0, then adding a path that exists
     will not move it to the end; it will stay where it is in the list.
 
-    If canonicalize is not None, it is applied to each element of 
+    If canonicalize is not None, it is applied to each element of
     newpath before use.
     """
 
@@ -1436,7 +1436,7 @@ else:
                 m.update(to_bytes (str(blck)))
             f.close()
             return m.hexdigest()
-            
+
 def MD5collect(signatures):
     """
     Collects a list of signatures into an aggregate signature.
diff --git a/src/engine/SCons/UtilTests.py b/src/engine/SCons/UtilTests.py
index 3167b9d..c52c910 100644
--- a/src/engine/SCons/UtilTests.py
+++ b/src/engine/SCons/UtilTests.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
-from six import u
+from SCons.compat.six import u
 
 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 
@@ -697,7 +697,7 @@ bling
     def test_intern(self):
         s1 = silent_intern("spam")
         # Python 3.x does not have a unicode() global function
-        if sys.version[0] == '2': 
+        if sys.version[0] == '2':
             s2 = silent_intern(unicode("unicode spam"))
         s3 = silent_intern(42)
         s4 = silent_intern("spam")
@@ -710,7 +710,7 @@ class MD5TestCase(unittest.TestCase):
         """Test collecting a list of signatures into a new signature value
         """
         s = list(map(MD5signature, ('111', '222', '333')))
-        
+
         assert '698d51a19d8a121ce581499d7b701668' == MD5collect(s[0:1])
         assert '8980c988edc2c78cc43ccb718c06efd5' == MD5collect(s[0:2])
         assert '53fd88c84ff8a285eb6e0a687e55b8c7' == MD5collect(s)
diff --git a/src/engine/SCons/compat/_scons_subprocess.py b/src/engine/SCons/compat/_scons_subprocess.py
index e4ac777..a58539d 100644
--- a/src/engine/SCons/compat/_scons_subprocess.py
+++ b/src/engine/SCons/compat/_scons_subprocess.py
@@ -352,7 +352,7 @@ except that:
 
 """
 from __future__ import print_function
-from six import integer_types
+from SCons.compat.six import integer_types
 
 import sys
 mswindows = (sys.platform == "win32")
diff --git a/src/engine/SCons/compat/six.py b/src/engine/SCons/compat/six.py
new file mode 100755
index 0000000..019130f
--- /dev/null
+++ b/src/engine/SCons/compat/six.py
@@ -0,0 +1,646 @@
+"""Utilities for writing code that runs on Python 2 and 3"""
+
+# Copyright (c) 2010-2014 Benjamin Peterson
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import operator
+import sys
+import types
+
+__author__ = "Benjamin Peterson <benjamin@python.org>"
+__version__ = "1.6.1"
+
+
+# Useful for very coarse version differentiation.
+PY2 = sys.version_info[0] == 2
+PY3 = sys.version_info[0] == 3
+
+if PY3:
+    string_types = str,
+    integer_types = int,
+    class_types = type,
+    text_type = str
+    binary_type = bytes
+
+    MAXSIZE = sys.maxsize
+else:
+    string_types = basestring,
+    integer_types = (int, long)
+    class_types = (type, types.ClassType)
+    text_type = unicode
+    binary_type = str
+
+    if sys.platform.startswith("java"):
+        # Jython always uses 32 bits.
+        MAXSIZE = int((1 << 31) - 1)
+    else:
+        # It's possible to have sizeof(long) != sizeof(Py_ssize_t).
+        class X(object):
+            def __len__(self):
+                return 1 << 31
+        try:
+            len(X())
+        except OverflowError:
+            # 32-bit
+            MAXSIZE = int((1 << 31) - 1)
+        else:
+            # 64-bit
+            MAXSIZE = int((1 << 63) - 1)
+        del X
+
+
+def _add_doc(func, doc):
+    """Add documentation to a function."""
+    func.__doc__ = doc
+
+
+def _import_module(name):
+    """Import module, returning the module after the last dot."""
+    __import__(name)
+    return sys.modules[name]
+
+
+class _LazyDescr(object):
+
+    def __init__(self, name):
+        self.name = name
+
+    def __get__(self, obj, tp):
+        try:
+            result = self._resolve()
+        except ImportError:
+            # See the nice big comment in MovedModule.__getattr__.
+            raise AttributeError("%s could not be imported " % self.name)
+        setattr(obj, self.name, result) # Invokes __set__.
+        # This is a bit ugly, but it avoids running this again.
+        delattr(obj.__class__, self.name)
+        return result
+
+
+class MovedModule(_LazyDescr):
+
+    def __init__(self, name, old, new=None):
+        super(MovedModule, self).__init__(name)
+        if PY3:
+            if new is None:
+                new = name
+            self.mod = new
+        else:
+            self.mod = old
+
+    def _resolve(self):
+        return _import_module(self.mod)
+
+    def __getattr__(self, attr):
+        # It turns out many Python frameworks like to traverse sys.modules and
+        # try to load various attributes. This causes problems if this is a
+        # platform-specific module on the wrong platform, like _winreg on
+        # Unixes. Therefore, we silently pretend unimportable modules do not
+        # have any attributes. See issues #51, #53, #56, and #63 for the full
+        # tales of woe.
+        #
+        # First, if possible, avoid loading the module just to look at __file__,
+        # __name__, or __path__.
+        if (attr in ("__file__", "__name__", "__path__") and
+            self.mod not in sys.modules):
+            raise AttributeError(attr)
+        try:
+            _module = self._resolve()
+        except ImportError:
+            raise AttributeError(attr)
+        value = getattr(_module, attr)
+        setattr(self, attr, value)
+        return value
+
+
+class _LazyModule(types.ModuleType):
+
+    def __init__(self, name):
+        super(_LazyModule, self).__init__(name)
+        self.__doc__ = self.__class__.__doc__
+
+    def __dir__(self):
+        attrs = ["__doc__", "__name__"]
+        attrs += [attr.name for attr in self._moved_attributes]
+        return attrs
+
+    # Subclasses should override this
+    _moved_attributes = []
+
+
+class MovedAttribute(_LazyDescr):
+
+    def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None):
+        super(MovedAttribute, self).__init__(name)
+        if PY3:
+            if new_mod is None:
+                new_mod = name
+            self.mod = new_mod
+            if new_attr is None:
+                if old_attr is None:
+                    new_attr = name
+                else:
+                    new_attr = old_attr
+            self.attr = new_attr
+        else:
+            self.mod = old_mod
+            if old_attr is None:
+                old_attr = name
+            self.attr = old_attr
+
+    def _resolve(self):
+        module = _import_module(self.mod)
+        return getattr(module, self.attr)
+
+
+
+class _MovedItems(_LazyModule):
+    """Lazy loading of moved objects"""
+
+
+_moved_attributes = [
+    MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"),
+    MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"),
+    MovedAttribute("filterfalse", "itertools", "itertools", "ifilterfalse", "filterfalse"),
+    MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"),
+    MovedAttribute("map", "itertools", "builtins", "imap", "map"),
+    MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
+    MovedAttribute("reload_module", "__builtin__", "imp", "reload"),
+    MovedAttribute("reduce", "__builtin__", "functools"),
+    MovedAttribute("StringIO", "StringIO", "io"),
+    MovedAttribute("UserString", "UserString", "collections"),
+    MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"),
+    MovedAttribute("zip", "itertools", "builtins", "izip", "zip"),
+    MovedAttribute("zip_longest", "itertools", "itertools", "izip_longest", "zip_longest"),
+
+    MovedModule("builtins", "__builtin__"),
+    MovedModule("configparser", "ConfigParser"),
+    MovedModule("copyreg", "copy_reg"),
+    MovedModule("dbm_gnu", "gdbm", "dbm.gnu"),
+    MovedModule("http_cookiejar", "cookielib", "http.cookiejar"),
+    MovedModule("http_cookies", "Cookie", "http.cookies"),
+    MovedModule("html_entities", "htmlentitydefs", "html.entities"),
+    MovedModule("html_parser", "HTMLParser", "html.parser"),
+    MovedModule("http_client", "httplib", "http.client"),
+    MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
+    MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
+    MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
+    MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
+    MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
+    MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
+    MovedModule("cPickle", "cPickle", "pickle"),
+    MovedModule("queue", "Queue"),
+    MovedModule("reprlib", "repr"),
+    MovedModule("socketserver", "SocketServer"),
+    MovedModule("_thread", "thread", "_thread"),
+    MovedModule("tkinter", "Tkinter"),
+    MovedModule("tkinter_dialog", "Dialog", "tkinter.dialog"),
+    MovedModule("tkinter_filedialog", "FileDialog", "tkinter.filedialog"),
+    MovedModule("tkinter_scrolledtext", "ScrolledText", "tkinter.scrolledtext"),
+    MovedModule("tkinter_simpledialog", "SimpleDialog", "tkinter.simpledialog"),
+    MovedModule("tkinter_tix", "Tix", "tkinter.tix"),
+    MovedModule("tkinter_ttk", "ttk", "tkinter.ttk"),
+    MovedModule("tkinter_constants", "Tkconstants", "tkinter.constants"),
+    MovedModule("tkinter_dnd", "Tkdnd", "tkinter.dnd"),
+    MovedModule("tkinter_colorchooser", "tkColorChooser",
+                "tkinter.colorchooser"),
+    MovedModule("tkinter_commondialog", "tkCommonDialog",
+                "tkinter.commondialog"),
+    MovedModule("tkinter_tkfiledialog", "tkFileDialog", "tkinter.filedialog"),
+    MovedModule("tkinter_font", "tkFont", "tkinter.font"),
+    MovedModule("tkinter_messagebox", "tkMessageBox", "tkinter.messagebox"),
+    MovedModule("tkinter_tksimpledialog", "tkSimpleDialog",
+                "tkinter.simpledialog"),
+    MovedModule("urllib_parse", __name__ + ".moves.urllib_parse", "urllib.parse"),
+    MovedModule("urllib_error", __name__ + ".moves.urllib_error", "urllib.error"),
+    MovedModule("urllib", __name__ + ".moves.urllib", __name__ + ".moves.urllib"),
+    MovedModule("urllib_robotparser", "robotparser", "urllib.robotparser"),
+    MovedModule("xmlrpc_client", "xmlrpclib", "xmlrpc.client"),
+    MovedModule("xmlrpc_server", "xmlrpclib", "xmlrpc.server"),
+    MovedModule("winreg", "_winreg"),
+]
+for attr in _moved_attributes:
+    setattr(_MovedItems, attr.name, attr)
+    if isinstance(attr, MovedModule):
+        sys.modules[__name__ + ".moves." + attr.name] = attr
+del attr
+
+_MovedItems._moved_attributes = _moved_attributes
+
+moves = sys.modules[__name__ + ".moves"] = _MovedItems(__name__ + ".moves")
+
+
+class Module_six_moves_urllib_parse(_LazyModule):
+    """Lazy loading of moved objects in six.moves.urllib_parse"""
+
+
+_urllib_parse_moved_attributes = [
+    MovedAttribute("ParseResult", "urlparse", "urllib.parse"),
+    MovedAttribute("SplitResult", "urlparse", "urllib.parse"),
+    MovedAttribute("parse_qs", "urlparse", "urllib.parse"),
+    MovedAttribute("parse_qsl", "urlparse", "urllib.parse"),
+    MovedAttribute("urldefrag", "urlparse", "urllib.parse"),
+    MovedAttribute("urljoin", "urlparse", "urllib.parse"),
+    MovedAttribute("urlparse", "urlparse", "urllib.parse"),
+    MovedAttribute("urlsplit", "urlparse", "urllib.parse"),
+    MovedAttribute("urlunparse", "urlparse", "urllib.parse"),
+    MovedAttribute("urlunsplit", "urlparse", "urllib.parse"),
+    MovedAttribute("quote", "urllib", "urllib.parse"),
+    MovedAttribute("quote_plus", "urllib", "urllib.parse"),
+    MovedAttribute("unquote", "urllib", "urllib.parse"),
+    MovedAttribute("unquote_plus", "urllib", "urllib.parse"),
+    MovedAttribute("urlencode", "urllib", "urllib.parse"),
+    MovedAttribute("splitquery", "urllib", "urllib.parse"),
+]
+for attr in _urllib_parse_moved_attributes:
+    setattr(Module_six_moves_urllib_parse, attr.name, attr)
+del attr
+
+Module_six_moves_urllib_parse._moved_attributes = _urllib_parse_moved_attributes
+
+sys.modules[__name__ + ".moves.urllib_parse"] = sys.modules[__name__ + ".moves.urllib.parse"] = Module_six_moves_urllib_parse(__name__ + ".moves.urllib_parse")
+
+
+class Module_six_moves_urllib_error(_LazyModule):
+    """Lazy loading of moved objects in six.moves.urllib_error"""
+
+
+_urllib_error_moved_attributes = [
+    MovedAttribute("URLError", "urllib2", "urllib.error"),
+    MovedAttribute("HTTPError", "urllib2", "urllib.error"),
+    MovedAttribute("ContentTooShortError", "urllib", "urllib.error"),
+]
+for attr in _urllib_error_moved_attributes:
+    setattr(Module_six_moves_urllib_error, attr.name, attr)
+del attr
+
+Module_six_moves_urllib_error._moved_attributes = _urllib_error_moved_attributes
+
+sys.modules[__name__ + ".moves.urllib_error"] = sys.modules[__name__ + ".moves.urllib.error"] = Module_six_moves_urllib_error(__name__ + ".moves.urllib.error")
+
+
+class Module_six_moves_urllib_request(_LazyModule):
+    """Lazy loading of moved objects in six.moves.urllib_request"""
+
+
+_urllib_request_moved_attributes = [
+    MovedAttribute("urlopen", "urllib2", "urllib.request"),
+    MovedAttribute("install_opener", "urllib2", "urllib.request"),
+    MovedAttribute("build_opener", "urllib2", "urllib.request"),
+    MovedAttribute("pathname2url", "urllib", "urllib.request"),
+    MovedAttribute("url2pathname", "urllib", "urllib.request"),
+    MovedAttribute("getproxies", "urllib", "urllib.request"),
+    MovedAttribute("Request", "urllib2", "urllib.request"),
+    MovedAttribute("OpenerDirector", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPDefaultErrorHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPRedirectHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPCookieProcessor", "urllib2", "urllib.request"),
+    MovedAttribute("ProxyHandler", "urllib2", "urllib.request"),
+    MovedAttribute("BaseHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPPasswordMgr", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPPasswordMgrWithDefaultRealm", "urllib2", "urllib.request"),
+    MovedAttribute("AbstractBasicAuthHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPBasicAuthHandler", "urllib2", "urllib.request"),
+    MovedAttribute("ProxyBasicAuthHandler", "urllib2", "urllib.request"),
+    MovedAttribute("AbstractDigestAuthHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPDigestAuthHandler", "urllib2", "urllib.request"),
+    MovedAttribute("ProxyDigestAuthHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPSHandler", "urllib2", "urllib.request"),
+    MovedAttribute("FileHandler", "urllib2", "urllib.request"),
+    MovedAttribute("FTPHandler", "urllib2", "urllib.request"),
+    MovedAttribute("CacheFTPHandler", "urllib2", "urllib.request"),
+    MovedAttribute("UnknownHandler", "urllib2", "urllib.request"),
+    MovedAttribute("HTTPErrorProcessor", "urllib2", "urllib.request"),
+    MovedAttribute("urlretrieve", "urllib", "urllib.request"),
+    MovedAttribute("urlcleanup", "urllib", "urllib.request"),
+    MovedAttribute("URLopener", "urllib", "urllib.request"),
+    MovedAttribute("FancyURLopener", "urllib", "urllib.request"),
+    MovedAttribute("proxy_bypass", "urllib", "urllib.request"),
+]
+for attr in _urllib_request_moved_attributes:
+    setattr(Module_six_moves_urllib_request, attr.name, attr)
+del attr
+
+Module_six_moves_urllib_request._moved_attributes = _urllib_request_moved_attributes
+
+sys.modules[__name__ + ".moves.urllib_request"] = sys.modules[__name__ + ".moves.urllib.request"] = Module_six_moves_urllib_request(__name__ + ".moves.urllib.request")
+
+
+class Module_six_moves_urllib_response(_LazyModule):
+    """Lazy loading of moved objects in six.moves.urllib_response"""
+
+
+_urllib_response_moved_attributes = [
+    MovedAttribute("addbase", "urllib", "urllib.response"),
+    MovedAttribute("addclosehook", "urllib", "urllib.response"),
+    MovedAttribute("addinfo", "urllib", "urllib.response"),
+    MovedAttribute("addinfourl", "urllib", "urllib.response"),
+]
+for attr in _urllib_response_moved_attributes:
+    setattr(Module_six_moves_urllib_response, attr.name, attr)
+del attr
+
+Module_six_moves_urllib_response._moved_attributes = _urllib_response_moved_attributes
+
+sys.modules[__name__ + ".moves.urllib_response"] = sys.modules[__name__ + ".moves.urllib.response"] = Module_six_moves_urllib_response(__name__ + ".moves.urllib.response")
+
+
+class Module_six_moves_urllib_robotparser(_LazyModule):
+    """Lazy loading of moved objects in six.moves.urllib_robotparser"""
+
+
+_urllib_robotparser_moved_attributes = [
+    MovedAttribute("RobotFileParser", "robotparser", "urllib.robotparser"),
+]
+for attr in _urllib_robotparser_moved_attributes:
+    setattr(Module_six_moves_urllib_robotparser, attr.name, attr)
+del attr
+
+Module_six_moves_urllib_robotparser._moved_attributes = _urllib_robotparser_moved_attributes
+
+sys.modules[__name__ + ".moves.urllib_robotparser"] = sys.modules[__name__ + ".moves.urllib.robotparser"] = Module_six_moves_urllib_robotparser(__name__ + ".moves.urllib.robotparser")
+
+
+class Module_six_moves_urllib(types.ModuleType):
+    """Create a six.moves.urllib namespace that resembles the Python 3 namespace"""
+    parse = sys.modules[__name__ + ".moves.urllib_parse"]
+    error = sys.modules[__name__ + ".moves.urllib_error"]
+    request = sys.modules[__name__ + ".moves.urllib_request"]
+    response = sys.modules[__name__ + ".moves.urllib_response"]
+    robotparser = sys.modules[__name__ + ".moves.urllib_robotparser"]
+
+    def __dir__(self):
+        return ['parse', 'error', 'request', 'response', 'robotparser']
+
+
+sys.modules[__name__ + ".moves.urllib"] = Module_six_moves_urllib(__name__ + ".moves.urllib")
+
+
+def add_move(move):
+    """Add an item to six.moves."""
+    setattr(_MovedItems, move.name, move)
+
+
+def remove_move(name):
+    """Remove item from six.moves."""
+    try:
+        delattr(_MovedItems, name)
+    except AttributeError:
+        try:
+            del moves.__dict__[name]
+        except KeyError:
+            raise AttributeError("no such move, %r" % (name,))
+
+
+if PY3:
+    _meth_func = "__func__"
+    _meth_self = "__self__"
+
+    _func_closure = "__closure__"
+    _func_code = "__code__"
+    _func_defaults = "__defaults__"
+    _func_globals = "__globals__"
+
+    _iterkeys = "keys"
+    _itervalues = "values"
+    _iteritems = "items"
+    _iterlists = "lists"
+else:
+    _meth_func = "im_func"
+    _meth_self = "im_self"
+
+    _func_closure = "func_closure"
+    _func_code = "func_code"
+    _func_defaults = "func_defaults"
+    _func_globals = "func_globals"
+
+    _iterkeys = "iterkeys"
+    _itervalues = "itervalues"
+    _iteritems = "iteritems"
+    _iterlists = "iterlists"
+
+
+try:
+    advance_iterator = next
+except NameError:
+    def advance_iterator(it):
+        return it.next()
+next = advance_iterator
+
+
+try:
+    callable = callable
+except NameError:
+    def callable(obj):
+        return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
+
+
+if PY3:
+    def get_unbound_function(unbound):
+        return unbound
+
+    create_bound_method = types.MethodType
+
+    Iterator = object
+else:
+    def get_unbound_function(unbound):
+        return unbound.im_func
+
+    def create_bound_method(func, obj):
+        return types.MethodType(func, obj, obj.__class__)
+
+    class Iterator(object):
+
+        def next(self):
+            return type(self).__next__(self)
+
+    callable = callable
+_add_doc(get_unbound_function,
+         """Get the function out of a possibly unbound function""")
+
+
+get_method_function = operator.attrgetter(_meth_func)
+get_method_self = operator.attrgetter(_meth_self)
+get_function_closure = operator.attrgetter(_func_closure)
+get_function_code = operator.attrgetter(_func_code)
+get_function_defaults = operator.attrgetter(_func_defaults)
+get_function_globals = operator.attrgetter(_func_globals)
+
+
+def iterkeys(d, **kw):
+    """Return an iterator over the keys of a dictionary."""
+    return iter(getattr(d, _iterkeys)(**kw))
+
+def itervalues(d, **kw):
+    """Return an iterator over the values of a dictionary."""
+    return iter(getattr(d, _itervalues)(**kw))
+
+def iteritems(d, **kw):
+    """Return an iterator over the (key, value) pairs of a dictionary."""
+    return iter(getattr(d, _iteritems)(**kw))
+
+def iterlists(d, **kw):
+    """Return an iterator over the (key, [values]) pairs of a dictionary."""
+    return iter(getattr(d, _iterlists)(**kw))
+
+
+if PY3:
+    def b(s):
+        return s.encode("latin-1")
+    def u(s):
+        return s
+    unichr = chr
+    if sys.version_info[1] <= 1:
+        def int2byte(i):
+            return bytes((i,))
+    else:
+        # This is about 2x faster than the implementation above on 3.2+
+        int2byte = operator.methodcaller("to_bytes", 1, "big")
+    byte2int = operator.itemgetter(0)
+    indexbytes = operator.getitem
+    iterbytes = iter
+    import io
+    StringIO = io.StringIO
+    BytesIO = io.BytesIO
+else:
+    def b(s):
+        return s
+    # Workaround for standalone backslash
+    def u(s):
+        return unicode(s.replace(r'\\', r'\\\\'), "unicode_escape")
+    unichr = unichr
+    int2byte = chr
+    def byte2int(bs):
+        return ord(bs[0])
+    def indexbytes(buf, i):
+        return ord(buf[i])
+    def iterbytes(buf):
+        return (ord(byte) for byte in buf)
+    import StringIO
+    StringIO = BytesIO = StringIO.StringIO
+_add_doc(b, """Byte literal""")
+_add_doc(u, """Text literal""")
+
+
+if PY3:
+    exec_ = getattr(moves.builtins, "exec")
+
+
+    def reraise(tp, value, tb=None):
+        if value.__traceback__ is not tb:
+            raise value.with_traceback(tb)
+        raise value
+
+else:
+    def exec_(_code_, _globs_=None, _locs_=None):
+        """Execute code in a namespace."""
+        if _globs_ is None:
+            frame = sys._getframe(1)
+            _globs_ = frame.f_globals
+            if _locs_ is None:
+                _locs_ = frame.f_locals
+            del frame
+        elif _locs_ is None:
+            _locs_ = _globs_
+        exec("""exec _code_ in _globs_, _locs_""")
+
+
+    exec_("""def reraise(tp, value, tb=None):
+    raise tp, value, tb
+""")
+
+
+print_ = getattr(moves.builtins, "print", None)
+if print_ is None:
+    def print_(*args, **kwargs):
+        """The new-style print function for Python 2.4 and 2.5."""
+        fp = kwargs.pop("file", sys.stdout)
+        if fp is None:
+            return
+        def write(data):
+            if not isinstance(data, basestring):
+                data = str(data)
+            # If the file has an encoding, encode unicode with it.
+            if (isinstance(fp, file) and
+                isinstance(data, unicode) and
+                fp.encoding is not None):
+                errors = getattr(fp, "errors", None)
+                if errors is None:
+                    errors = "strict"
+                data = data.encode(fp.encoding, errors)
+            fp.write(data)
+        want_unicode = False
+        sep = kwargs.pop("sep", None)
+        if sep is not None:
+            if isinstance(sep, unicode):
+                want_unicode = True
+            elif not isinstance(sep, str):
+                raise TypeError("sep must be None or a string")
+        end = kwargs.pop("end", None)
+        if end is not None:
+            if isinstance(end, unicode):
+                want_unicode = True
+            elif not isinstance(end, str):
+                raise TypeError("end must be None or a string")
+        if kwargs:
+            raise TypeError("invalid keyword arguments to print()")
+        if not want_unicode:
+            for arg in args:
+                if isinstance(arg, unicode):
+                    want_unicode = True
+                    break
+        if want_unicode:
+            newline = unicode("\n")
+            space = unicode(" ")
+        else:
+            newline = "\n"
+            space = " "
+        if sep is None:
+            sep = space
+        if end is None:
+            end = newline
+        for i, arg in enumerate(args):
+            if i:
+                write(sep)
+            write(arg)
+        write(end)
+
+_add_doc(reraise, """Reraise an exception.""")
+
+
+def with_metaclass(meta, *bases):
+    """Create a base class with a metaclass."""
+    return meta("NewBase", bases, {})
+
+def add_metaclass(metaclass):
+    """Class decorator for creating a class with a metaclass."""
+    def wrapper(cls):
+        orig_vars = cls.__dict__.copy()
+        orig_vars.pop('__dict__', None)
+        orig_vars.pop('__weakref__', None)
+        slots = orig_vars.get('__slots__')
+        if slots is not None:
+            if isinstance(slots, str):
+                slots = [slots]
+            for slots_var in slots:
+                orig_vars.pop(slots_var)
+        return metaclass(cls.__name__, cls.__bases__, orig_vars)
+    return wrapper
diff --git a/src/engine/SCons/compat/sixTests.py b/src/engine/SCons/compat/sixTests.py
new file mode 100644
index 0000000..f8c1979
--- /dev/null
+++ b/src/engine/SCons/compat/sixTests.py
@@ -0,0 +1,34 @@
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+import unittest
+
+class sixTestCase(unittest.TestCase):
+
+    def test_import(self):
+        """Test that six imports correctly."""
+        import sys
+        print sys.path
+        from SCons.compat.six import PY2, PY3
+        self.assertTrue(PY2 or PY3)
+