switch build system to gyp

47 files changed, 27167 insertions, 0 deletions

diff --git a/deps/gyp/.gitignore b/deps/gyp/.gitignore
new file mode 100644
index 0000000000..0d20b6487c
--- /dev/null
+++ b/deps/gyp/.gitignore
@@ -0,0 +1 @@
+*.pyc
diff --git a/deps/gyp/LICENSE b/deps/gyp/LICENSE
new file mode 100644
index 0000000000..ab6b011a10
--- /dev/null
+++ b/deps/gyp/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 Google Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/deps/gyp/OWNERS b/deps/gyp/OWNERS
new file mode 100644
index 0000000000..72e8ffc0db
--- /dev/null
+++ b/deps/gyp/OWNERS
@@ -0,0 +1 @@
+*
diff --git a/deps/gyp/PRESUBMIT.py b/deps/gyp/PRESUBMIT.py
new file mode 100644
index 0000000000..9c474eb2b1
--- /dev/null
+++ b/deps/gyp/PRESUBMIT.py
@@ -0,0 +1,120 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+"""Top-level presubmit script for GYP.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into gcl.
+"""
+
+
+PYLINT_BLACKLIST = [
+    # TODO: fix me.
+    # From SCons, not done in google style.
+    'test/lib/TestCmd.py',
+    'test/lib/TestCommon.py',
+    'test/lib/TestGyp.py',
+    # Needs style fix.
+    'pylib/gyp/generator/xcode.py',
+]
+
+
+PYLINT_DISABLED_WARNINGS = [
+    # TODO: fix me.
+    # Many tests include modules they don't use.
+    'W0611',
+    # Include order doesn't properly include local files?
+    'F0401',
+    # Some use of built-in names.
+    'W0622',
+    # Some unused variables.
+    'W0612',
+    # Operator not preceded/followed by space.
+    'C0323',
+    'C0322',
+    # Unnecessary semicolon.
+    'W0301',
+    # Unused argument.
+    'W0613',
+    # String has no effect (docstring in wrong place).
+    'W0105',
+    # Comma not followed by space.
+    'C0324',
+    # Access to a protected member.
+    'W0212',
+    # Bad indent.
+    'W0311',
+    # Line too long.
+    'C0301',
+    # Undefined variable.
+    'E0602',
+    # Not exception type specified.
+    'W0702',
+    # No member of that name.
+    'E1101',
+    # Dangerous default {}.
+    'W0102',
+    # Others, too many to sort.
+    'W0201', 'W0232', 'E1103', 'W0621', 'W0108', 'W0223', 'W0231',
+    'R0201', 'E0101', 'C0321',
+    # ************* Module copy
+    # W0104:427,12:_test.odict.__setitem__: Statement seems to have no effect
+    'W0104',
+]
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  report = []
+  report.extend(input_api.canned_checks.PanProjectChecks(
+      input_api, output_api))
+  return report
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  report = []
+
+  # Accept any year number from 2009 to the current year.
+  current_year = int(input_api.time.strftime('%Y'))
+  allowed_years = (str(s) for s in reversed(xrange(2009, current_year + 1)))
+  years_re = '(' + '|'.join(allowed_years) + ')'
+
+  # The (c) is deprecated, but tolerate it until it's removed from all files.
+  license = (
+      r'.*? Copyright (\(c\) )?%(year)s Google Inc\. All rights reserved\.\n'
+      r'.*? Use of this source code is governed by a BSD-style license that '
+        r'can be\n'
+      r'.*? found in the LICENSE file\.\n'
+  ) % {
+      'year': years_re,
+  }
+
+  report.extend(input_api.canned_checks.PanProjectChecks(
+      input_api, output_api, license_header=license))
+  report.extend(input_api.canned_checks.CheckTreeIsOpen(
+      input_api, output_api,
+      'http://gyp-status.appspot.com/status',
+      'http://gyp-status.appspot.com/current'))
+
+  import os
+  import sys
+  old_sys_path = sys.path
+  try:
+    sys.path = ['pylib', 'test/lib'] + sys.path
+    blacklist = PYLINT_BLACKLIST
+    if sys.platform == 'win32':
+      blacklist = [os.path.normpath(x).replace('\\', '\\\\')
+                   for x in PYLINT_BLACKLIST]
+    report.extend(input_api.canned_checks.RunPylint(
+        input_api,
+        output_api,
+        black_list=blacklist,
+        disabled_warnings=PYLINT_DISABLED_WARNINGS))
+  finally:
+    sys.path = old_sys_path
+  return report
+
+
+def GetPreferredTrySlaves():
+  return ['gyp-win32', 'gyp-win64', 'gyp-linux', 'gyp-mac', 'gyp-android']
diff --git a/deps/gyp/gyp b/deps/gyp/gyp
new file mode 100755
index 0000000000..b53a6dde8f
--- /dev/null
+++ b/deps/gyp/gyp
@@ -0,0 +1,8 @@
+#!/bin/bash
+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -e
+base=$(dirname "$0")
+exec python "${base}/gyp_main.py" "$@"
diff --git a/deps/gyp/gyp.bat b/deps/gyp/gyp.bat
new file mode 100755
index 0000000000..c0b4ca24e5
--- /dev/null
+++ b/deps/gyp/gyp.bat
@@ -0,0 +1,5 @@
+@rem Copyright (c) 2009 Google Inc. All rights reserved.

+@rem Use of this source code is governed by a BSD-style license that can be

+@rem found in the LICENSE file.

+

+@python "%~dp0gyp_main.py" %*

diff --git a/deps/gyp/gyp_main.py b/deps/gyp/gyp_main.py
new file mode 100755
index 0000000000..4ec872f0f9
--- /dev/null
+++ b/deps/gyp/gyp_main.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2009 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import sys
+
+# TODO(mark): sys.path manipulation is some temporary testing stuff.
+try:
+  import gyp
+except ImportError, e:
+  import os.path
+  sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), 'pylib'))
+  import gyp
+
+if __name__ == '__main__':
+  sys.exit(gyp.script_main())
diff --git a/deps/gyp/gyptest.py b/deps/gyp/gyptest.py
new file mode 100755
index 0000000000..8f3ee0ffb0
--- /dev/null
+++ b/deps/gyp/gyptest.py
@@ -0,0 +1,274 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+__doc__ = """
+gyptest.py -- test runner for GYP tests.
+"""
+
+import os
+import optparse
+import subprocess
+import sys
+
+class CommandRunner:
+  """
+  Executor class for commands, including "commands" implemented by
+  Python functions.
+  """
+  verbose = True
+  active = True
+
+  def __init__(self, dictionary={}):
+    self.subst_dictionary(dictionary)
+
+  def subst_dictionary(self, dictionary):
+    self._subst_dictionary = dictionary
+
+  def subst(self, string, dictionary=None):
+    """
+    Substitutes (via the format operator) the values in the specified
+    dictionary into the specified command.
+
+    The command can be an (action, string) tuple.  In all cases, we
+    perform substitution on strings and don't worry if something isn't
+    a string.  (It's probably a Python function to be executed.)
+    """
+    if dictionary is None:
+      dictionary = self._subst_dictionary
+    if dictionary:
+      try:
+        string = string % dictionary
+      except TypeError:
+        pass
+    return string
+
+  def display(self, command, stdout=None, stderr=None):
+    if not self.verbose:
+      return
+    if type(command) == type(()):
+      func = command[0]
+      args = command[1:]
+      s = '%s(%s)' % (func.__name__, ', '.join(map(repr, args)))
+    if type(command) == type([]):
+      # TODO:  quote arguments containing spaces
+      # TODO:  handle meta characters?
+      s = ' '.join(command)
+    else:
+      s = self.subst(command)
+    if not s.endswith('\n'):
+      s += '\n'
+    sys.stdout.write(s)
+    sys.stdout.flush()
+
+  def execute(self, command, stdout=None, stderr=None):
+    """
+    Executes a single command.
+    """
+    if not self.active:
+      return 0
+    if type(command) == type(''):
+      command = self.subst(command)
+      cmdargs = shlex.split(command)
+      if cmdargs[0] == 'cd':
+         command = (os.chdir,) + tuple(cmdargs[1:])
+    if type(command) == type(()):
+      func = command[0]
+      args = command[1:]
+      return func(*args)
+    else:
+      if stdout is sys.stdout:
+        # Same as passing sys.stdout, except python2.4 doesn't fail on it.
+        subout = None
+      else:
+        # Open pipe for anything else so Popen works on python2.4.
+        subout = subprocess.PIPE
+      if stderr is sys.stderr:
+        # Same as passing sys.stderr, except python2.4 doesn't fail on it.
+        suberr = None
+      elif stderr is None:
+        # Merge with stdout if stderr isn't specified.
+        suberr = subprocess.STDOUT
+      else:
+        # Open pipe for anything else so Popen works on python2.4.
+        suberr = subprocess.PIPE
+      p = subprocess.Popen(command,
+                           shell=(sys.platform == 'win32'),
+                           stdout=subout,
+                           stderr=suberr)
+      p.wait()
+      if stdout is None:
+        self.stdout = p.stdout.read()
+      elif stdout is not sys.stdout:
+        stdout.write(p.stdout.read())
+      if stderr not in (None, sys.stderr):
+        stderr.write(p.stderr.read())
+      return p.returncode
+
+  def run(self, command, display=None, stdout=None, stderr=None):
+    """
+    Runs a single command, displaying it first.
+    """
+    if display is None:
+      display = command
+    self.display(display)
+    return self.execute(command, stdout, stderr)
+
+
+class Unbuffered:
+  def __init__(self, fp):
+    self.fp = fp
+  def write(self, arg):
+    self.fp.write(arg)
+    self.fp.flush()
+  def __getattr__(self, attr):
+    return getattr(self.fp, attr)
+
+sys.stdout = Unbuffered(sys.stdout)
+sys.stderr = Unbuffered(sys.stderr)
+
+
+def is_test_name(f):
+  return f.startswith('gyptest') and f.endswith('.py')
+
+
+def find_all_gyptest_files(directory):
+  result = []
+  for root, dirs, files in os.walk(directory):
+    if '.svn' in dirs:
+      dirs.remove('.svn')
+    result.extend([ os.path.join(root, f) for f in files if is_test_name(f) ])
+  result.sort()
+  return result
+
+
+def main(argv=None):
+  if argv is None:
+    argv = sys.argv
+
+  usage = "gyptest.py [-ahlnq] [-f formats] [test ...]"
+  parser = optparse.OptionParser(usage=usage)
+  parser.add_option("-a", "--all", action="store_true",
+            help="run all tests")
+  parser.add_option("-C", "--chdir", action="store", default=None,
+            help="chdir to the specified directory")
+  parser.add_option("-f", "--format", action="store", default='',
+            help="run tests with the specified formats")
+  parser.add_option("-G", '--gyp_option', action="append", default=[],
+            help="Add -G options to the gyp command line")
+  parser.add_option("-l", "--list", action="store_true",
+            help="list available tests and exit")
+  parser.add_option("-n", "--no-exec", action="store_true",
+            help="no execute, just print the command line")
+  parser.add_option("--passed", action="store_true",
+            help="report passed tests")
+  parser.add_option("--path", action="append", default=[],
+            help="additional $PATH directory")
+  parser.add_option("-q", "--quiet", action="store_true",
+            help="quiet, don't print test command lines")
+  opts, args = parser.parse_args(argv[1:])
+
+  if opts.chdir:
+    os.chdir(opts.chdir)
+
+  if opts.path:
+    extra_path = [os.path.abspath(p) for p in opts.path]
+    extra_path = os.pathsep.join(extra_path)
+    os.environ['PATH'] = extra_path + os.pathsep + os.environ['PATH']
+
+  if not args:
+    if not opts.all:
+      sys.stderr.write('Specify -a to get all tests.\n')
+      return 1
+    args = ['test']
+
+  tests = []
+  for arg in args:
+    if os.path.isdir(arg):
+      tests.extend(find_all_gyptest_files(os.path.normpath(arg)))
+    else:
+      if not is_test_name(os.path.basename(arg)):
+        print >>sys.stderr, arg, 'is not a valid gyp test name.'
+        sys.exit(1)
+      tests.append(arg)
+
+  if opts.list:
+    for test in tests:
+      print test
+    sys.exit(0)
+
+  CommandRunner.verbose = not opts.quiet
+  CommandRunner.active = not opts.no_exec
+  cr = CommandRunner()
+
+  os.environ['PYTHONPATH'] = os.path.abspath('test/lib')
+  if not opts.quiet:
+    sys.stdout.write('PYTHONPATH=%s\n' % os.environ['PYTHONPATH'])
+
+  passed = []
+  failed = []
+  no_result = []
+
+  if opts.format:
+    format_list = opts.format.split(',')
+  else:
+    # TODO:  not duplicate this mapping from pylib/gyp/__init__.py
+    format_list = {
+      'aix5':     ['make'],
+      'freebsd7': ['make'],
+      'freebsd8': ['make'],
+      'openbsd5': ['make'],
+      'cygwin':   ['msvs'],
+      'win32':    ['msvs', 'ninja'],
+      'linux2':   ['make', 'ninja'],
+      'linux3':   ['make', 'ninja'],
+      'darwin':   ['make', 'ninja', 'xcode'],
+    }[sys.platform]
+
+  for format in format_list:
+    os.environ['TESTGYP_FORMAT'] = format
+    if not opts.quiet:
+      sys.stdout.write('TESTGYP_FORMAT=%s\n' % format)
+
+    gyp_options = []
+    for option in opts.gyp_option:
+      gyp_options += ['-G', option]
+    if gyp_options and not opts.quiet:
+      sys.stdout.write('Extra Gyp options: %s\n' % gyp_options)
+
+    for test in tests:
+      status = cr.run([sys.executable, test] + gyp_options,
+                      stdout=sys.stdout,
+                      stderr=sys.stderr)
+      if status == 2:
+        no_result.append(test)
+      elif status:
+        failed.append(test)
+      else:
+        passed.append(test)
+
+  if not opts.quiet:
+    def report(description, tests):
+      if tests:
+        if len(tests) == 1:
+          sys.stdout.write("\n%s the following test:\n" % description)
+        else:
+          fmt = "\n%s the following %d tests:\n"
+          sys.stdout.write(fmt % (description, len(tests)))
+        sys.stdout.write("\t" + "\n\t".join(tests) + "\n")
+
+    if opts.passed:
+      report("Passed", passed)
+    report("Failed", failed)
+    report("No result from", no_result)
+
+  if failed:
+    return 1
+  else:
+    return 0
+
+
+if __name__ == "__main__":
+  sys.exit(main())
diff --git a/deps/gyp/pylib/gyp/MSVSNew.py b/deps/gyp/pylib/gyp/MSVSNew.py
new file mode 100644
index 0000000000..845dcb0639
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSNew.py
@@ -0,0 +1,340 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""New implementation of Visual Studio project generation."""
+
+import os
+import random
+
+import gyp.common
+
+# hashlib is supplied as of Python 2.5 as the replacement interface for md5
+# and other secure hashes.  In 2.6, md5 is deprecated.  Import hashlib if
+# available, avoiding a deprecation warning under 2.6.  Import md5 otherwise,
+# preserving 2.4 compatibility.
+try:
+  import hashlib
+  _new_md5 = hashlib.md5
+except ImportError:
+  import md5
+  _new_md5 = md5.new
+
+
+# Initialize random number generator
+random.seed()
+
+# GUIDs for project types
+ENTRY_TYPE_GUIDS = {
+    'project': '{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}',
+    'folder': '{2150E333-8FDC-42A3-9474-1A3956D46DE8}',
+}
+
+#------------------------------------------------------------------------------
+# Helper functions
+
+
+def MakeGuid(name, seed='msvs_new'):
+  """Returns a GUID for the specified target name.
+
+  Args:
+    name: Target name.
+    seed: Seed for MD5 hash.
+  Returns:
+    A GUID-line string calculated from the name and seed.
+
+  This generates something which looks like a GUID, but depends only on the
+  name and seed.  This means the same name/seed will always generate the same
+  GUID, so that projects and solutions which refer to each other can explicitly
+  determine the GUID to refer to explicitly.  It also means that the GUID will
+  not change when the project for a target is rebuilt.
+  """
+  # Calculate a MD5 signature for the seed and name.
+  d = _new_md5(str(seed) + str(name)).hexdigest().upper()
+  # Convert most of the signature to GUID form (discard the rest)
+  guid = ('{' + d[:8] + '-' + d[8:12] + '-' + d[12:16] + '-' + d[16:20]
+          + '-' + d[20:32] + '}')
+  return guid
+
+#------------------------------------------------------------------------------
+
+
+class MSVSSolutionEntry(object):
+  def __cmp__(self, other):
+    # Sort by name then guid (so things are in order on vs2008).
+    return cmp((self.name, self.get_guid()), (other.name, other.get_guid()))
+
+
+class MSVSFolder(MSVSSolutionEntry):
+  """Folder in a Visual Studio project or solution."""
+
+  def __init__(self, path, name = None, entries = None,
+               guid = None, items = None):
+    """Initializes the folder.
+
+    Args:
+      path: Full path to the folder.
+      name: Name of the folder.
+      entries: List of folder entries to nest inside this folder.  May contain
+          Folder or Project objects.  May be None, if the folder is empty.
+      guid: GUID to use for folder, if not None.
+      items: List of solution items to include in the folder project.  May be
+          None, if the folder does not directly contain items.
+    """
+    if name:
+      self.name = name
+    else:
+      # Use last layer.
+      self.name = os.path.basename(path)
+
+    self.path = path
+    self.guid = guid
+
+    # Copy passed lists (or set to empty lists)
+    self.entries = sorted(list(entries or []))
+    self.items = list(items or [])
+
+    self.entry_type_guid = ENTRY_TYPE_GUIDS['folder']
+
+  def get_guid(self):
+    if self.guid is None:
+      # Use consistent guids for folders (so things don't regenerate).
+      self.guid = MakeGuid(self.path, seed='msvs_folder')
+    return self.guid
+
+
+#------------------------------------------------------------------------------
+
+
+class MSVSProject(MSVSSolutionEntry):
+  """Visual Studio project."""
+
+  def __init__(self, path, name = None, dependencies = None, guid = None,
+               spec = None, build_file = None, config_platform_overrides = None,
+               fixpath_prefix = None):
+    """Initializes the project.
+
+    Args:
+      path: Absolute path to the project file.
+      name: Name of project.  If None, the name will be the same as the base
+          name of the project file.
+      dependencies: List of other Project objects this project is dependent
+          upon, if not None.
+      guid: GUID to use for project, if not None.
+      spec: Dictionary specifying how to build this project.
+      build_file: Filename of the .gyp file that the vcproj file comes from.
+      config_platform_overrides: optional dict of configuration platforms to
+          used in place of the default for this target.
+      fixpath_prefix: the path used to adjust the behavior of _fixpath
+    """
+    self.path = path
+    self.guid = guid
+    self.spec = spec
+    self.build_file = build_file
+    # Use project filename if name not specified
+    self.name = name or os.path.splitext(os.path.basename(path))[0]
+
+    # Copy passed lists (or set to empty lists)
+    self.dependencies = list(dependencies or [])
+
+    self.entry_type_guid = ENTRY_TYPE_GUIDS['project']
+
+    if config_platform_overrides:
+      self.config_platform_overrides = config_platform_overrides
+    else:
+      self.config_platform_overrides = {}
+    self.fixpath_prefix = fixpath_prefix
+    self.msbuild_toolset = None
+
+  def set_dependencies(self, dependencies):
+    self.dependencies = list(dependencies or [])
+
+  def get_guid(self):
+    if self.guid is None:
+      # Set GUID from path
+      # TODO(rspangler): This is fragile.
+      # 1. We can't just use the project filename sans path, since there could
+      #    be multiple projects with the same base name (for example,
+      #    foo/unittest.vcproj and bar/unittest.vcproj).
+      # 2. The path needs to be relative to $SOURCE_ROOT, so that the project
+      #    GUID is the same whether it's included from base/base.sln or
+      #    foo/bar/baz/baz.sln.
+      # 3. The GUID needs to be the same each time this builder is invoked, so
+      #    that we don't need to rebuild the solution when the project changes.
+      # 4. We should be able to handle pre-built project files by reading the
+      #    GUID from the files.
+      self.guid = MakeGuid(self.name)
+    return self.guid
+
+  def set_msbuild_toolset(self, msbuild_toolset):
+    self.msbuild_toolset = msbuild_toolset
+
+#------------------------------------------------------------------------------
+
+
+class MSVSSolution:
+  """Visual Studio solution."""
+
+  def __init__(self, path, version, entries=None, variants=None,
+               websiteProperties=True):
+    """Initializes the solution.
+
+    Args:
+      path: Path to solution file.
+      version: Format version to emit.
+      entries: List of entries in solution.  May contain Folder or Project
+          objects.  May be None, if the folder is empty.
+      variants: List of build variant strings.  If none, a default list will
+          be used.
+      websiteProperties: Flag to decide if the website properties section
+          is generated.
+    """
+    self.path = path
+    self.websiteProperties = websiteProperties
+    self.version = version
+
+    # Copy passed lists (or set to empty lists)
+    self.entries = list(entries or [])
+
+    if variants:
+      # Copy passed list
+      self.variants = variants[:]
+    else:
+      # Use default
+      self.variants = ['Debug|Win32', 'Release|Win32']
+    # TODO(rspangler): Need to be able to handle a mapping of solution config
+    # to project config.  Should we be able to handle variants being a dict,
+    # or add a separate variant_map variable?  If it's a dict, we can't
+    # guarantee the order of variants since dict keys aren't ordered.
+
+
+    # TODO(rspangler): Automatically write to disk for now; should delay until
+    # node-evaluation time.
+    self.Write()
+
+
+  def Write(self, writer=gyp.common.WriteOnDiff):
+    """Writes the solution file to disk.
+
+    Raises:
+      IndexError: An entry appears multiple times.
+    """
+    # Walk the entry tree and collect all the folders and projects.
+    all_entries = set()
+    entries_to_check = self.entries[:]
+    while entries_to_check:
+      e = entries_to_check.pop(0)
+
+      # If this entry has been visited, nothing to do.
+      if e in all_entries:
+        continue
+
+      all_entries.add(e)
+
+      # If this is a folder, check its entries too.
+      if isinstance(e, MSVSFolder):
+        entries_to_check += e.entries
+
+    all_entries = sorted(all_entries)
+
+    # Open file and print header
+    f = writer(self.path)
+    f.write('Microsoft Visual Studio Solution File, '
+            'Format Version %s\r\n' % self.version.SolutionVersion())
+    f.write('# %s\r\n' % self.version.Description())
+
+    # Project entries
+    sln_root = os.path.split(self.path)[0]
+    for e in all_entries:
+      relative_path = gyp.common.RelativePath(e.path, sln_root)
+      # msbuild does not accept an empty folder_name.
+      # use '.' in case relative_path is empty.
+      folder_name = relative_path.replace('/', '\\') or '.'
+      f.write('Project("%s") = "%s", "%s", "%s"\r\n' % (
+          e.entry_type_guid,          # Entry type GUID
+          e.name,                     # Folder name
+          folder_name,                # Folder name (again)
+          e.get_guid(),               # Entry GUID
+      ))
+
+      # TODO(rspangler): Need a way to configure this stuff
+      if self.websiteProperties:
+        f.write('\tProjectSection(WebsiteProperties) = preProject\r\n'
+                '\t\tDebug.AspNetCompiler.Debug = "True"\r\n'
+                '\t\tRelease.AspNetCompiler.Debug = "False"\r\n'
+                '\tEndProjectSection\r\n')
+
+      if isinstance(e, MSVSFolder):
+        if e.items:
+          f.write('\tProjectSection(SolutionItems) = preProject\r\n')
+          for i in e.items:
+            f.write('\t\t%s = %s\r\n' % (i, i))
+          f.write('\tEndProjectSection\r\n')
+
+      if isinstance(e, MSVSProject):
+        if e.dependencies:
+          f.write('\tProjectSection(ProjectDependencies) = postProject\r\n')
+          for d in e.dependencies:
+            f.write('\t\t%s = %s\r\n' % (d.get_guid(), d.get_guid()))
+          f.write('\tEndProjectSection\r\n')
+
+      f.write('EndProject\r\n')
+
+    # Global section
+    f.write('Global\r\n')
+
+    # Configurations (variants)
+    f.write('\tGlobalSection(SolutionConfigurationPlatforms) = preSolution\r\n')
+    for v in self.variants:
+      f.write('\t\t%s = %s\r\n' % (v, v))
+    f.write('\tEndGlobalSection\r\n')
+
+    # Sort config guids for easier diffing of solution changes.
+    config_guids = []
+    config_guids_overrides = {}
+    for e in all_entries:
+      if isinstance(e, MSVSProject):
+        config_guids.append(e.get_guid())
+        config_guids_overrides[e.get_guid()] = e.config_platform_overrides
+    config_guids.sort()
+
+    f.write('\tGlobalSection(ProjectConfigurationPlatforms) = postSolution\r\n')
+    for g in config_guids:
+      for v in self.variants:
+        nv = config_guids_overrides[g].get(v, v)
+        # Pick which project configuration to build for this solution
+        # configuration.
+        f.write('\t\t%s.%s.ActiveCfg = %s\r\n' % (
+            g,              # Project GUID
+            v,              # Solution build configuration
+            nv,             # Project build config for that solution config
+        ))
+
+        # Enable project in this solution configuration.
+        f.write('\t\t%s.%s.Build.0 = %s\r\n' % (
+            g,              # Project GUID
+            v,              # Solution build configuration
+            nv,             # Project build config for that solution config
+        ))
+    f.write('\tEndGlobalSection\r\n')
+
+    # TODO(rspangler): Should be able to configure this stuff too (though I've
+    # never seen this be any different)
+    f.write('\tGlobalSection(SolutionProperties) = preSolution\r\n')
+    f.write('\t\tHideSolutionNode = FALSE\r\n')
+    f.write('\tEndGlobalSection\r\n')
+
+    # Folder mappings
+    # Omit this section if there are no folders
+    if any([e.entries for e in all_entries if isinstance(e, MSVSFolder)]):
+      f.write('\tGlobalSection(NestedProjects) = preSolution\r\n')
+      for e in all_entries:
+        if not isinstance(e, MSVSFolder):
+          continue        # Does not apply to projects, only folders
+        for subentry in e.entries:
+          f.write('\t\t%s = %s\r\n' % (subentry.get_guid(), e.get_guid()))
+      f.write('\tEndGlobalSection\r\n')
+
+    f.write('EndGlobal\r\n')
+
+    f.close()
diff --git a/deps/gyp/pylib/gyp/MSVSProject.py b/deps/gyp/pylib/gyp/MSVSProject.py
new file mode 100644
index 0000000000..db1ceede34
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSProject.py
@@ -0,0 +1,208 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Visual Studio project reader/writer."""
+
+import gyp.common
+import gyp.easy_xml as easy_xml
+
+#------------------------------------------------------------------------------
+
+
+class Tool(object):
+  """Visual Studio tool."""
+
+  def __init__(self, name, attrs=None):
+    """Initializes the tool.
+
+    Args:
+      name: Tool name.
+      attrs: Dict of tool attributes; may be None.
+    """
+    self._attrs = attrs or {}
+    self._attrs['Name'] = name
+
+  def _GetSpecification(self):
+    """Creates an element for the tool.
+
+    Returns:
+      A new xml.dom.Element for the tool.
+    """
+    return ['Tool', self._attrs]
+
+class Filter(object):
+  """Visual Studio filter - that is, a virtual folder."""
+
+  def __init__(self, name, contents=None):
+    """Initializes the folder.
+
+    Args:
+      name: Filter (folder) name.
+      contents: List of filenames and/or Filter objects contained.
+    """
+    self.name = name
+    self.contents = list(contents or [])
+
+
+#------------------------------------------------------------------------------
+
+
+class Writer(object):
+  """Visual Studio XML project writer."""
+
+  def __init__(self, project_path, version, name, guid=None, platforms=None):
+    """Initializes the project.
+
+    Args:
+      project_path: Path to the project file.
+      version: Format version to emit.
+      name: Name of the project.
+      guid: GUID to use for project, if not None.
+      platforms: Array of string, the supported platforms.  If null, ['Win32']
+    """
+    self.project_path = project_path
+    self.version = version
+    self.name = name
+    self.guid = guid
+
+    # Default to Win32 for platforms.
+    if not platforms:
+      platforms = ['Win32']
+
+    # Initialize the specifications of the various sections.
+    self.platform_section = ['Platforms']
+    for platform in platforms:
+      self.platform_section.append(['Platform', {'Name': platform}])
+    self.tool_files_section = ['ToolFiles']
+    self.configurations_section = ['Configurations']
+    self.files_section = ['Files']
+
+    # Keep a dict keyed on filename to speed up access.
+    self.files_dict = dict()
+
+  def AddToolFile(self, path):
+    """Adds a tool file to the project.
+
+    Args:
+      path: Relative path from project to tool file.
+    """
+    self.tool_files_section.append(['ToolFile', {'RelativePath': path}])
+
+  def _GetSpecForConfiguration(self, config_type, config_name, attrs, tools):
+    """Returns the specification for a configuration.
+
+    Args:
+      config_type: Type of configuration node.
+      config_name: Configuration name.
+      attrs: Dict of configuration attributes; may be None.
+      tools: List of tools (strings or Tool objects); may be None.
+    Returns:
+    """
+    # Handle defaults
+    if not attrs:
+      attrs = {}
+    if not tools:
+      tools = []
+
+    # Add configuration node and its attributes
+    node_attrs = attrs.copy()
+    node_attrs['Name'] = config_name
+    specification = [config_type, node_attrs]
+
+    # Add tool nodes and their attributes
+    if tools:
+      for t in tools:
+        if isinstance(t, Tool):
+          specification.append(t._GetSpecification())
+        else:
+          specification.append(Tool(t)._GetSpecification())
+    return specification
+
+
+  def AddConfig(self, name, attrs=None, tools=None):
+    """Adds a configuration to the project.
+
+    Args:
+      name: Configuration name.
+      attrs: Dict of configuration attributes; may be None.
+      tools: List of tools (strings or Tool objects); may be None.
+    """
+    spec = self._GetSpecForConfiguration('Configuration', name, attrs, tools)
+    self.configurations_section.append(spec)
+
+  def _AddFilesToNode(self, parent, files):
+    """Adds files and/or filters to the parent node.
+
+    Args:
+      parent: Destination node
+      files: A list of Filter objects and/or relative paths to files.
+
+    Will call itself recursively, if the files list contains Filter objects.
+    """
+    for f in files:
+      if isinstance(f, Filter):
+        node = ['Filter', {'Name': f.name}]
+        self._AddFilesToNode(node, f.contents)
+      else:
+        node = ['File', {'RelativePath': f}]
+        self.files_dict[f] = node
+      parent.append(node)
+
+  def AddFiles(self, files):
+    """Adds files to the project.
+
+    Args:
+      files: A list of Filter objects and/or relative paths to files.
+
+    This makes a copy of the file/filter tree at the time of this call.  If you
+    later add files to a Filter object which was passed into a previous call
+    to AddFiles(), it will not be reflected in this project.
+    """
+    self._AddFilesToNode(self.files_section, files)
+    # TODO(rspangler) This also doesn't handle adding files to an existing
+    # filter.  That is, it doesn't merge the trees.
+
+  def AddFileConfig(self, path, config, attrs=None, tools=None):
+    """Adds a configuration to a file.
+
+    Args:
+      path: Relative path to the file.
+      config: Name of configuration to add.
+      attrs: Dict of configuration attributes; may be None.
+      tools: List of tools (strings or Tool objects); may be None.
+
+    Raises:
+      ValueError: Relative path does not match any file added via AddFiles().
+    """
+    # Find the file node with the right relative path
+    parent = self.files_dict.get(path)
+    if not parent:
+      raise ValueError('AddFileConfig: file "%s" not in project.' % path)
+
+    # Add the config to the file node
+    spec = self._GetSpecForConfiguration('FileConfiguration', config, attrs,
+                                         tools)
+    parent.append(spec)
+
+  def WriteIfChanged(self):
+    """Writes the project file."""
+    # First create XML content definition
+    content = [
+        'VisualStudioProject',
+        {'ProjectType': 'Visual C++',
+         'Version': self.version.ProjectVersion(),
+         'Name': self.name,
+         'ProjectGUID': self.guid,
+         'RootNamespace': self.name,
+         'Keyword': 'Win32Proj'
+        },
+        self.platform_section,
+        self.tool_files_section,
+        self.configurations_section,
+        ['References'],  # empty section
+        self.files_section,
+        ['Globals']  # empty section
+    ]
+    easy_xml.WriteXmlIfChanged(content, self.project_path,
+                               encoding="Windows-1252")
diff --git a/deps/gyp/pylib/gyp/MSVSSettings.py b/deps/gyp/pylib/gyp/MSVSSettings.py
new file mode 100644
index 0000000000..773b74e984
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSSettings.py
@@ -0,0 +1,1063 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Code to validate and convert settings of the Microsoft build tools.
+
+This file contains code to validate and convert settings of the Microsoft
+build tools.  The function ConvertToMSBuildSettings(), ValidateMSVSSettings(),
+and ValidateMSBuildSettings() are the entry points.
+
+This file was created by comparing the projects created by Visual Studio 2008
+and Visual Studio 2010 for all available settings through the user interface.
+The MSBuild schemas were also considered.  They are typically found in the
+MSBuild install directory, e.g. c:\Program Files (x86)\MSBuild
+"""
+
+import sys
+import re
+
+# Dictionaries of settings validators. The key is the tool name, the value is
+# a dictionary mapping setting names to validation functions.
+_msvs_validators = {}
+_msbuild_validators = {}
+
+
+# A dictionary of settings converters. The key is the tool name, the value is
+# a dictionary mapping setting names to conversion functions.
+_msvs_to_msbuild_converters = {}
+
+
+# Tool name mapping from MSVS to MSBuild.
+_msbuild_name_of_tool = {}
+
+
+class _Tool(object):
+  """Represents a tool used by MSVS or MSBuild.
+
+  Attributes:
+      msvs_name: The name of the tool in MSVS.
+      msbuild_name: The name of the tool in MSBuild.
+  """
+
+  def __init__(self, msvs_name, msbuild_name):
+    self.msvs_name = msvs_name
+    self.msbuild_name = msbuild_name
+
+
+def _AddTool(tool):
+  """Adds a tool to the four dictionaries used to process settings.
+
+  This only defines the tool.  Each setting also needs to be added.
+
+  Args:
+    tool: The _Tool object to be added.
+  """
+  _msvs_validators[tool.msvs_name] = {}
+  _msbuild_validators[tool.msbuild_name] = {}
+  _msvs_to_msbuild_converters[tool.msvs_name] = {}
+  _msbuild_name_of_tool[tool.msvs_name] = tool.msbuild_name
+
+
+def _GetMSBuildToolSettings(msbuild_settings, tool):
+  """Returns an MSBuild tool dictionary.  Creates it if needed."""
+  return msbuild_settings.setdefault(tool.msbuild_name, {})
+
+
+class _Type(object):
+  """Type of settings (Base class)."""
+
+  def ValidateMSVS(self, value):
+    """Verifies that the value is legal for MSVS.
+
+    Args:
+      value: the value to check for this type.
+
+    Raises:
+      ValueError if value is not valid for MSVS.
+    """
+
+  def ValidateMSBuild(self, value):
+    """Verifies that the value is legal for MSBuild.
+
+    Args:
+      value: the value to check for this type.
+
+    Raises:
+      ValueError if value is not valid for MSBuild.
+    """
+
+  def ConvertToMSBuild(self, value):
+    """Returns the MSBuild equivalent of the MSVS value given.
+
+    Args:
+      value: the MSVS value to convert.
+
+    Returns:
+      the MSBuild equivalent.
+
+    Raises:
+      ValueError if value is not valid.
+    """
+    return value
+
+
+class _String(_Type):
+  """A setting that's just a string."""
+
+  def ValidateMSVS(self, value):
+    if not isinstance(value, basestring):
+      raise ValueError('expected string; got %r' % value)
+
+  def ValidateMSBuild(self, value):
+    if not isinstance(value, basestring):
+      raise ValueError('expected string; got %r' % value)
+
+  def ConvertToMSBuild(self, value):
+    # Convert the macros
+    return ConvertVCMacrosToMSBuild(value)
+
+
+class _StringList(_Type):
+  """A settings that's a list of strings."""
+
+  def ValidateMSVS(self, value):
+    if not isinstance(value, basestring) and not isinstance(value, list):
+      raise ValueError('expected string list; got %r' % value)
+
+  def ValidateMSBuild(self, value):
+    if not isinstance(value, basestring) and not isinstance(value, list):
+      raise ValueError('expected string list; got %r' % value)
+
+  def ConvertToMSBuild(self, value):
+    # Convert the macros
+    if isinstance(value, list):
+      return [ConvertVCMacrosToMSBuild(i) for i in value]
+    else:
+      return ConvertVCMacrosToMSBuild(value)
+
+
+class _Boolean(_Type):
+  """Boolean settings, can have the values 'false' or 'true'."""
+
+  def _Validate(self, value):
+    if value != 'true' and value != 'false':
+      raise ValueError('expected bool; got %r' % value)
+
+  def ValidateMSVS(self, value):
+    self._Validate(value)
+
+  def ValidateMSBuild(self, value):
+    self._Validate(value)
+
+  def ConvertToMSBuild(self, value):
+    self._Validate(value)
+    return value
+
+
+class _Integer(_Type):
+  """Integer settings."""
+
+  def __init__(self, msbuild_base=10):
+    _Type.__init__(self)
+    self._msbuild_base = msbuild_base
+
+  def ValidateMSVS(self, value):
+    # Try to convert, this will raise ValueError if invalid.
+    self.ConvertToMSBuild(value)
+
+  def ValidateMSBuild(self, value):
+    # Try to convert, this will raise ValueError if invalid.
+    int(value, self._msbuild_base)
+
+  def ConvertToMSBuild(self, value):
+    msbuild_format = (self._msbuild_base == 10) and '%d' or '0x%04x'
+    return msbuild_format % int(value)
+
+
+class _Enumeration(_Type):
+  """Type of settings that is an enumeration.
+
+  In MSVS, the values are indexes like '0', '1', and '2'.
+  MSBuild uses text labels that are more representative, like 'Win32'.
+
+  Constructor args:
+    label_list: an array of MSBuild labels that correspond to the MSVS index.
+        In the rare cases where MSVS has skipped an index value, None is
+        used in the array to indicate the unused spot.
+    new: an array of labels that are new to MSBuild.
+  """
+
+  def __init__(self, label_list, new=None):
+    _Type.__init__(self)
+    self._label_list = label_list
+    self._msbuild_values = set(value for value in label_list
+                               if value is not None)
+    if new is not None:
+      self._msbuild_values.update(new)
+
+  def ValidateMSVS(self, value):
+    # Try to convert.  It will raise an exception if not valid.
+    self.ConvertToMSBuild(value)
+
+  def ValidateMSBuild(self, value):
+    if value not in self._msbuild_values:
+      raise ValueError('unrecognized enumerated value %s' % value)
+
+  def ConvertToMSBuild(self, value):
+    index = int(value)
+    if index < 0 or index >= len(self._label_list):
+      raise ValueError('index value (%d) not in expected range [0, %d)' %
+                       (index, len(self._label_list)))
+    label = self._label_list[index]
+    if label is None:
+      raise ValueError('converted value for %s not specified.' % value)
+    return label
+
+
+# Instantiate the various generic types.
+_boolean = _Boolean()
+_integer = _Integer()
+# For now, we don't do any special validation on these types:
+_string = _String()
+_file_name = _String()
+_folder_name = _String()
+_file_list = _StringList()
+_folder_list = _StringList()
+_string_list = _StringList()
+# Some boolean settings went from numerical values to boolean.  The
+# mapping is 0: default, 1: false, 2: true.
+_newly_boolean = _Enumeration(['', 'false', 'true'])
+
+
+def _Same(tool, name, setting_type):
+  """Defines a setting that has the same name in MSVS and MSBuild.
+
+  Args:
+    tool: a dictionary that gives the names of the tool for MSVS and MSBuild.
+    name: the name of the setting.
+    setting_type: the type of this setting.
+  """
+  _Renamed(tool, name, name, setting_type)
+
+
+def _Renamed(tool, msvs_name, msbuild_name, setting_type):
+  """Defines a setting for which the name has changed.
+
+  Args:
+    tool: a dictionary that gives the names of the tool for MSVS and MSBuild.
+    msvs_name: the name of the MSVS setting.
+    msbuild_name: the name of the MSBuild setting.
+    setting_type: the type of this setting.
+  """
+
+  def _Translate(value, msbuild_settings):
+    msbuild_tool_settings = _GetMSBuildToolSettings(msbuild_settings, tool)
+    msbuild_tool_settings[msbuild_name] = setting_type.ConvertToMSBuild(value)
+
+  _msvs_validators[tool.msvs_name][msvs_name] = setting_type.ValidateMSVS
+  _msbuild_validators[tool.msbuild_name][msbuild_name] = (
+      setting_type.ValidateMSBuild)
+  _msvs_to_msbuild_converters[tool.msvs_name][msvs_name] = _Translate
+
+
+def _Moved(tool, settings_name, msbuild_tool_name, setting_type):
+  _MovedAndRenamed(tool, settings_name, msbuild_tool_name, settings_name,
+                   setting_type)
+
+
+def _MovedAndRenamed(tool, msvs_settings_name, msbuild_tool_name,
+                     msbuild_settings_name, setting_type):
+  """Defines a setting that may have moved to a new section.
+
+  Args:
+    tool: a dictionary that gives the names of the tool for MSVS and MSBuild.
+    msvs_settings_name: the MSVS name of the setting.
+    msbuild_tool_name: the name of the MSBuild tool to place the setting under.
+    msbuild_settings_name: the MSBuild name of the setting.
+    setting_type: the type of this setting.
+  """
+
+  def _Translate(value, msbuild_settings):
+    tool_settings = msbuild_settings.setdefault(msbuild_tool_name, {})
+    tool_settings[msbuild_settings_name] = setting_type.ConvertToMSBuild(value)
+
+  _msvs_validators[tool.msvs_name][msvs_settings_name] = (
+      setting_type.ValidateMSVS)
+  validator = setting_type.ValidateMSBuild
+  _msbuild_validators[msbuild_tool_name][msbuild_settings_name] = validator
+  _msvs_to_msbuild_converters[tool.msvs_name][msvs_settings_name] = _Translate
+
+
+def _MSVSOnly(tool, name, setting_type):
+  """Defines a setting that is only found in MSVS.
+
+  Args:
+    tool: a dictionary that gives the names of the tool for MSVS and MSBuild.
+    name: the name of the setting.
+    setting_type: the type of this setting.
+  """
+
+  def _Translate(unused_value, unused_msbuild_settings):
+    # Since this is for MSVS only settings, no translation will happen.
+    pass
+
+  _msvs_validators[tool.msvs_name][name] = setting_type.ValidateMSVS
+  _msvs_to_msbuild_converters[tool.msvs_name][name] = _Translate
+
+
+def _MSBuildOnly(tool, name, setting_type):
+  """Defines a setting that is only found in MSBuild.
+
+  Args:
+    tool: a dictionary that gives the names of the tool for MSVS and MSBuild.
+    name: the name of the setting.
+    setting_type: the type of this setting.
+  """
+  _msbuild_validators[tool.msbuild_name][name] = setting_type.ValidateMSBuild
+
+
+def _ConvertedToAdditionalOption(tool, msvs_name, flag):
+  """Defines a setting that's handled via a command line option in MSBuild.
+
+  Args:
+    tool: a dictionary that gives the names of the tool for MSVS and MSBuild.
+    msvs_name: the name of the MSVS setting that if 'true' becomes a flag
+    flag: the flag to insert at the end of the AdditionalOptions
+  """
+
+  def _Translate(value, msbuild_settings):
+    if value == 'true':
+      tool_settings = _GetMSBuildToolSettings(msbuild_settings, tool)
+      if 'AdditionalOptions' in tool_settings:
+        new_flags = '%s %s' % (tool_settings['AdditionalOptions'], flag)
+      else:
+        new_flags = flag
+      tool_settings['AdditionalOptions'] = new_flags
+  _msvs_validators[tool.msvs_name][msvs_name] = _boolean.ValidateMSVS
+  _msvs_to_msbuild_converters[tool.msvs_name][msvs_name] = _Translate
+
+
+def _CustomGeneratePreprocessedFile(tool, msvs_name):
+  def _Translate(value, msbuild_settings):
+    tool_settings = _GetMSBuildToolSettings(msbuild_settings, tool)
+    if value == '0':
+      tool_settings['PreprocessToFile'] = 'false'
+      tool_settings['PreprocessSuppressLineNumbers'] = 'false'
+    elif value == '1':  # /P
+      tool_settings['PreprocessToFile'] = 'true'
+      tool_settings['PreprocessSuppressLineNumbers'] = 'false'
+    elif value == '2':  # /EP /P
+      tool_settings['PreprocessToFile'] = 'true'
+      tool_settings['PreprocessSuppressLineNumbers'] = 'true'
+    else:
+      raise ValueError('value must be one of [0, 1, 2]; got %s' % value)
+  # Create a bogus validator that looks for '0', '1', or '2'
+  msvs_validator = _Enumeration(['a', 'b', 'c']).ValidateMSVS
+  _msvs_validators[tool.msvs_name][msvs_name] = msvs_validator
+  msbuild_validator = _boolean.ValidateMSBuild
+  msbuild_tool_validators = _msbuild_validators[tool.msbuild_name]
+  msbuild_tool_validators['PreprocessToFile'] = msbuild_validator
+  msbuild_tool_validators['PreprocessSuppressLineNumbers'] = msbuild_validator
+  _msvs_to_msbuild_converters[tool.msvs_name][msvs_name] = _Translate
+
+
+fix_vc_macro_slashes_regex_list = ('IntDir', 'OutDir')
+fix_vc_macro_slashes_regex = re.compile(
+  r'(\$\((?:%s)\))(?:[\\/]+)' % "|".join(fix_vc_macro_slashes_regex_list)
+)
+
+def FixVCMacroSlashes(s):
+  """Replace macros which have excessive following slashes.
+
+  These macros are known to have a built-in trailing slash. Furthermore, many
+  scripts hiccup on processing paths with extra slashes in the middle.
+
+  This list is probably not exhaustive.  Add as needed.
+  """
+  if '$' in s:
+    s = fix_vc_macro_slashes_regex.sub(r'\1', s)
+  return s
+
+
+def ConvertVCMacrosToMSBuild(s):
+  """Convert the the MSVS macros found in the string to the MSBuild equivalent.
+
+  This list is probably not exhaustive.  Add as needed.
+  """
+  if '$' in s:
+    replace_map = {
+        '$(ConfigurationName)': '$(Configuration)',
+        '$(InputDir)': '%(RootDir)%(Directory)',
+        '$(InputExt)': '%(Extension)',
+        '$(InputFileName)': '%(Filename)%(Extension)',
+        '$(InputName)': '%(Filename)',
+        '$(InputPath)': '%(FullPath)',
+        '$(ParentName)': '$(ProjectFileName)',
+        '$(PlatformName)': '$(Platform)',
+        '$(SafeInputName)': '%(Filename)',
+    }
+    for old, new in replace_map.iteritems():
+      s = s.replace(old, new)
+    s = FixVCMacroSlashes(s)
+  return s
+
+
+_EXCLUDED_SUFFIX_RE = re.compile('^(.*)_excluded$')
+
+
+def ConvertToMSBuildSettings(msvs_settings, stderr=sys.stderr):
+  """Converts MSVS settings (VS2008 and earlier) to MSBuild settings (VS2010+).
+
+  Args:
+      msvs_settings: A dictionary.  The key is the tool name.  The values are
+          themselves dictionaries of settings and their values.
+      stderr: The stream receiving the error messages.
+
+  Returns:
+      A dictionary of MSBuild settings.  The key is either the MSBuild tool name
+      or the empty string (for the global settings).  The values are themselves
+      dictionaries of settings and their values.
+  """
+  msbuild_settings = {}
+  for msvs_tool_name, msvs_tool_settings in msvs_settings.iteritems():
+    if msvs_tool_name in _msvs_to_msbuild_converters:
+      msvs_tool = _msvs_to_msbuild_converters[msvs_tool_name]
+      for msvs_setting, msvs_value in msvs_tool_settings.iteritems():
+        if msvs_setting in msvs_tool:
+          # Invoke the translation function.
+          try:
+            msvs_tool[msvs_setting](msvs_value, msbuild_settings)
+          except ValueError, e:
+            print >> stderr, ('Warning: while converting %s/%s to MSBuild, '
+                              '%s' % (msvs_tool_name, msvs_setting, e))
+        else:
+          # This may be unrecognized because it's an exclusion list. If the
+          # setting name has the _excluded suffix, then check the root name.
+          unrecognized = True
+          m = re.match(_EXCLUDED_SUFFIX_RE, msvs_setting)
+          if m:
+            root_msvs_setting = m.group(1)
+            unrecognized = root_msvs_setting not in msvs_tool
+
+          if unrecognized:
+            # We don't know this setting. Give a warning.
+            print >> stderr, ('Warning: unrecognized setting %s/%s '
+                              'while converting to MSBuild.' %
+                              (msvs_tool_name, msvs_setting))
+    else:
+      print >> stderr, ('Warning: unrecognized tool %s while converting to '
+                        'MSBuild.' % msvs_tool_name)
+  return msbuild_settings
+
+
+def ValidateMSVSSettings(settings, stderr=sys.stderr):
+  """Validates that the names of the settings are valid for MSVS.
+
+  Args:
+      settings: A dictionary.  The key is the tool name.  The values are
+          themselves dictionaries of settings and their values.
+      stderr: The stream receiving the error messages.
+  """
+  _ValidateSettings(_msvs_validators, settings, stderr)
+
+
+def ValidateMSBuildSettings(settings, stderr=sys.stderr):
+  """Validates that the names of the settings are valid for MSBuild.
+
+  Args:
+      settings: A dictionary.  The key is the tool name.  The values are
+          themselves dictionaries of settings and their values.
+      stderr: The stream receiving the error messages.
+  """
+  _ValidateSettings(_msbuild_validators, settings, stderr)
+
+
+def _ValidateSettings(validators, settings, stderr):
+  """Validates that the settings are valid for MSBuild or MSVS.
+
+  We currently only validate the names of the settings, not their values.
+
+  Args:
+      validators: A dictionary of tools and their validators.
+      settings: A dictionary.  The key is the tool name.  The values are
+          themselves dictionaries of settings and their values.
+      stderr: The stream receiving the error messages.
+  """
+  for tool_name in settings:
+    if tool_name in validators:
+      tool_validators = validators[tool_name]
+      for setting, value in settings[tool_name].iteritems():
+        if setting in tool_validators:
+          try:
+            tool_validators[setting](value)
+          except ValueError, e:
+            print >> stderr, ('Warning: for %s/%s, %s' %
+                              (tool_name, setting, e))
+        else:
+          print >> stderr, ('Warning: unrecognized setting %s/%s' %
+                            (tool_name, setting))
+    else:
+      print >> stderr, ('Warning: unrecognized tool %s' % tool_name)
+
+
+# MSVS and MBuild names of the tools.
+_compile = _Tool('VCCLCompilerTool', 'ClCompile')
+_link = _Tool('VCLinkerTool', 'Link')
+_midl = _Tool('VCMIDLTool', 'Midl')
+_rc = _Tool('VCResourceCompilerTool', 'ResourceCompile')
+_lib = _Tool('VCLibrarianTool', 'Lib')
+_manifest = _Tool('VCManifestTool', 'Manifest')
+
+
+_AddTool(_compile)
+_AddTool(_link)
+_AddTool(_midl)
+_AddTool(_rc)
+_AddTool(_lib)
+_AddTool(_manifest)
+# Add sections only found in the MSBuild settings.
+_msbuild_validators[''] = {}
+_msbuild_validators['ProjectReference'] = {}
+_msbuild_validators['ManifestResourceCompile'] = {}
+
+# Descriptions of the compiler options, i.e. VCCLCompilerTool in MSVS and
+# ClCompile in MSBuild.
+# See "c:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\1033\cl.xml" for
+# the schema of the MSBuild ClCompile settings.
+
+# Options that have the same name in MSVS and MSBuild
+_Same(_compile, 'AdditionalIncludeDirectories', _folder_list)  # /I
+_Same(_compile, 'AdditionalOptions', _string_list)
+_Same(_compile, 'AdditionalUsingDirectories', _folder_list)  # /AI
+_Same(_compile, 'AssemblerListingLocation', _file_name)  # /Fa
+_Same(_compile, 'BrowseInformationFile', _file_name)
+_Same(_compile, 'BufferSecurityCheck', _boolean)  # /GS
+_Same(_compile, 'DisableLanguageExtensions', _boolean)  # /Za
+_Same(_compile, 'DisableSpecificWarnings', _string_list)  # /wd
+_Same(_compile, 'EnableFiberSafeOptimizations', _boolean)  # /GT
+_Same(_compile, 'EnablePREfast', _boolean)  # /analyze Visible='false'
+_Same(_compile, 'ExpandAttributedSource', _boolean)  # /Fx
+_Same(_compile, 'FloatingPointExceptions', _boolean)  # /fp:except
+_Same(_compile, 'ForceConformanceInForLoopScope', _boolean)  # /Zc:forScope
+_Same(_compile, 'ForcedIncludeFiles', _file_list)  # /FI
+_Same(_compile, 'ForcedUsingFiles', _file_list)  # /FU
+_Same(_compile, 'GenerateXMLDocumentationFiles', _boolean)  # /doc
+_Same(_compile, 'IgnoreStandardIncludePath', _boolean)  # /X
+_Same(_compile, 'MinimalRebuild', _boolean)  # /Gm
+_Same(_compile, 'OmitDefaultLibName', _boolean)  # /Zl
+_Same(_compile, 'OmitFramePointers', _boolean)  # /Oy
+_Same(_compile, 'PreprocessorDefinitions', _string_list)  # /D
+_Same(_compile, 'ProgramDataBaseFileName', _file_name)  # /Fd
+_Same(_compile, 'RuntimeTypeInfo', _boolean)  # /GR
+_Same(_compile, 'ShowIncludes', _boolean)  # /showIncludes
+_Same(_compile, 'SmallerTypeCheck', _boolean)  # /RTCc
+_Same(_compile, 'StringPooling', _boolean)  # /GF
+_Same(_compile, 'SuppressStartupBanner', _boolean)  # /nologo
+_Same(_compile, 'TreatWChar_tAsBuiltInType', _boolean)  # /Zc:wchar_t
+_Same(_compile, 'UndefineAllPreprocessorDefinitions', _boolean)  # /u
+_Same(_compile, 'UndefinePreprocessorDefinitions', _string_list)  # /U
+_Same(_compile, 'UseFullPaths', _boolean)  # /FC
+_Same(_compile, 'WholeProgramOptimization', _boolean)  # /GL
+_Same(_compile, 'XMLDocumentationFileName', _file_name)
+
+_Same(_compile, 'AssemblerOutput',
+      _Enumeration(['NoListing',
+                    'AssemblyCode',  # /FA
+                    'All',  # /FAcs
+                    'AssemblyAndMachineCode',  # /FAc
+                    'AssemblyAndSourceCode']))  # /FAs
+_Same(_compile, 'BasicRuntimeChecks',
+      _Enumeration(['Default',
+                    'StackFrameRuntimeCheck',  # /RTCs
+                    'UninitializedLocalUsageCheck',  # /RTCu
+                    'EnableFastChecks']))  # /RTC1
+_Same(_compile, 'BrowseInformation',
+      _Enumeration(['false',
+                    'true',  # /FR
+                    'true']))  # /Fr
+_Same(_compile, 'CallingConvention',
+      _Enumeration(['Cdecl',  # /Gd
+                    'FastCall',  # /Gr
+                    'StdCall']))  # /Gz
+_Same(_compile, 'CompileAs',
+      _Enumeration(['Default',
+                    'CompileAsC',  # /TC
+                    'CompileAsCpp']))  # /TP
+_Same(_compile, 'DebugInformationFormat',
+      _Enumeration(['',  # Disabled
+                    'OldStyle',  # /Z7
+                    None,
+                    'ProgramDatabase',  # /Zi
+                    'EditAndContinue']))  # /ZI
+_Same(_compile, 'EnableEnhancedInstructionSet',
+      _Enumeration(['NotSet',
+                    'StreamingSIMDExtensions',  # /arch:SSE
+                    'StreamingSIMDExtensions2']))  # /arch:SSE2
+_Same(_compile, 'ErrorReporting',
+      _Enumeration(['None',  # /errorReport:none
+                    'Prompt',  # /errorReport:prompt
+                    'Queue'],  # /errorReport:queue
+                   new=['Send']))  # /errorReport:send"
+_Same(_compile, 'ExceptionHandling',
+      _Enumeration(['false',
+                    'Sync',  # /EHsc
+                    'Async'],  # /EHa
+                   new=['SyncCThrow']))  # /EHs
+_Same(_compile, 'FavorSizeOrSpeed',
+      _Enumeration(['Neither',
+                    'Speed',  # /Ot
+                    'Size']))  # /Os
+_Same(_compile, 'FloatingPointModel',
+      _Enumeration(['Precise',  # /fp:precise
+                    'Strict',  # /fp:strict
+                    'Fast']))  # /fp:fast
+_Same(_compile, 'InlineFunctionExpansion',
+      _Enumeration(['Default',
+                    'OnlyExplicitInline',  # /Ob1
+                    'AnySuitable'],  # /Ob2
+                   new=['Disabled']))  # /Ob0
+_Same(_compile, 'Optimization',
+      _Enumeration(['Disabled',  # /Od
+                    'MinSpace',  # /O1
+                    'MaxSpeed',  # /O2
+                    'Full']))  # /Ox
+_Same(_compile, 'RuntimeLibrary',
+      _Enumeration(['MultiThreaded',  # /MT
+                    'MultiThreadedDebug',  # /MTd
+                    'MultiThreadedDLL',  # /MD
+                    'MultiThreadedDebugDLL']))  # /MDd
+_Same(_compile, 'StructMemberAlignment',
+      _Enumeration(['Default',
+                    '1Byte',  # /Zp1
+                    '2Bytes',  # /Zp2
+                    '4Bytes',  # /Zp4
+                    '8Bytes',  # /Zp8
+                    '16Bytes']))  # /Zp16
+_Same(_compile, 'WarningLevel',
+      _Enumeration(['TurnOffAllWarnings',  # /W0
+                    'Level1',  # /W1
+                    'Level2',  # /W2
+                    'Level3',  # /W3
+                    'Level4'],  # /W4
+                   new=['EnableAllWarnings']))  # /Wall
+
+# Options found in MSVS that have been renamed in MSBuild.
+_Renamed(_compile, 'EnableFunctionLevelLinking', 'FunctionLevelLinking',
+         _boolean)  # /Gy
+_Renamed(_compile, 'EnableIntrinsicFunctions', 'IntrinsicFunctions',
+         _boolean)  # /Oi
+_Renamed(_compile, 'KeepComments', 'PreprocessKeepComments', _boolean)  # /C
+_Renamed(_compile, 'ObjectFile', 'ObjectFileName', _file_name)  # /Fo
+_Renamed(_compile, 'OpenMP', 'OpenMPSupport', _boolean)  # /openmp
+_Renamed(_compile, 'PrecompiledHeaderThrough', 'PrecompiledHeaderFile',
+         _file_name)  # Used with /Yc and /Yu
+_Renamed(_compile, 'PrecompiledHeaderFile', 'PrecompiledHeaderOutputFile',
+         _file_name)  # /Fp
+_Renamed(_compile, 'UsePrecompiledHeader', 'PrecompiledHeader',
+         _Enumeration(['NotUsing',  # VS recognized '' for this value too.
+                       'Create',   # /Yc
+                       'Use']))  # /Yu
+_Renamed(_compile, 'WarnAsError', 'TreatWarningAsError', _boolean)  # /WX
+
+_ConvertedToAdditionalOption(_compile, 'DefaultCharIsUnsigned', '/J')
+
+# MSVS options not found in MSBuild.
+_MSVSOnly(_compile, 'Detect64BitPortabilityProblems', _boolean)
+_MSVSOnly(_compile, 'UseUnicodeResponseFiles', _boolean)
+
+# MSBuild options not found in MSVS.
+_MSBuildOnly(_compile, 'BuildingInIDE', _boolean)
+_MSBuildOnly(_compile, 'CompileAsManaged',
+             _Enumeration([], new=['false',
+                                   'true',  # /clr
+                                   'Pure',  # /clr:pure
+                                   'Safe',  # /clr:safe
+                                   'OldSyntax']))  # /clr:oldSyntax
+_MSBuildOnly(_compile, 'CreateHotpatchableImage', _boolean)  # /hotpatch
+_MSBuildOnly(_compile, 'MultiProcessorCompilation', _boolean)  # /MP
+_MSBuildOnly(_compile, 'PreprocessOutputPath', _string)  # /Fi
+_MSBuildOnly(_compile, 'ProcessorNumber', _integer)  # the number of processors
+_MSBuildOnly(_compile, 'TrackerLogDirectory', _folder_name)
+_MSBuildOnly(_compile, 'TreatSpecificWarningsAsErrors', _string_list)  # /we
+_MSBuildOnly(_compile, 'UseUnicodeForAssemblerListing', _boolean)  # /FAu
+
+# Defines a setting that needs very customized processing
+_CustomGeneratePreprocessedFile(_compile, 'GeneratePreprocessedFile')
+
+
+# Directives for converting MSVS VCLinkerTool to MSBuild Link.
+# See "c:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\1033\link.xml" for
+# the schema of the MSBuild Link settings.
+
+# Options that have the same name in MSVS and MSBuild
+_Same(_link, 'AdditionalDependencies', _file_list)
+_Same(_link, 'AdditionalLibraryDirectories', _folder_list)  # /LIBPATH
+#  /MANIFESTDEPENDENCY:
+_Same(_link, 'AdditionalManifestDependencies', _file_list)
+_Same(_link, 'AdditionalOptions', _string_list)
+_Same(_link, 'AddModuleNamesToAssembly', _file_list)  # /ASSEMBLYMODULE
+_Same(_link, 'AllowIsolation', _boolean)  # /ALLOWISOLATION
+_Same(_link, 'AssemblyLinkResource', _file_list)  # /ASSEMBLYLINKRESOURCE
+_Same(_link, 'BaseAddress', _string)  # /BASE
+_Same(_link, 'CLRUnmanagedCodeCheck', _boolean)  # /CLRUNMANAGEDCODECHECK
+_Same(_link, 'DelayLoadDLLs', _file_list)  # /DELAYLOAD
+_Same(_link, 'DelaySign', _boolean)  # /DELAYSIGN
+_Same(_link, 'EmbedManagedResourceFile', _file_list)  # /ASSEMBLYRESOURCE
+_Same(_link, 'EnableUAC', _boolean)  # /MANIFESTUAC
+_Same(_link, 'EntryPointSymbol', _string)  # /ENTRY
+_Same(_link, 'ForceSymbolReferences', _file_list)  # /INCLUDE
+_Same(_link, 'FunctionOrder', _file_name)  # /ORDER
+_Same(_link, 'GenerateDebugInformation', _boolean)  # /DEBUG
+_Same(_link, 'GenerateMapFile', _boolean)  # /MAP
+_Same(_link, 'HeapCommitSize', _string)
+_Same(_link, 'HeapReserveSize', _string)  # /HEAP
+_Same(_link, 'IgnoreAllDefaultLibraries', _boolean)  # /NODEFAULTLIB
+_Same(_link, 'IgnoreEmbeddedIDL', _boolean)  # /IGNOREIDL
+_Same(_link, 'ImportLibrary', _file_name)  # /IMPLIB
+_Same(_link, 'KeyContainer', _file_name)  # /KEYCONTAINER
+_Same(_link, 'KeyFile', _file_name)  # /KEYFILE
+_Same(_link, 'ManifestFile', _file_name)  # /ManifestFile
+_Same(_link, 'MapExports', _boolean)  # /MAPINFO:EXPORTS
+_Same(_link, 'MapFileName', _file_name)
+_Same(_link, 'MergedIDLBaseFileName', _file_name)  # /IDLOUT
+_Same(_link, 'MergeSections', _string)  # /MERGE
+_Same(_link, 'MidlCommandFile', _file_name)  # /MIDL
+_Same(_link, 'ModuleDefinitionFile', _file_name)  # /DEF
+_Same(_link, 'OutputFile', _file_name)  # /OUT
+_Same(_link, 'PerUserRedirection', _boolean)
+_Same(_link, 'Profile', _boolean)  # /PROFILE
+_Same(_link, 'ProfileGuidedDatabase', _file_name)  # /PGD
+_Same(_link, 'ProgramDatabaseFile', _file_name)  # /PDB
+_Same(_link, 'RegisterOutput', _boolean)
+_Same(_link, 'SetChecksum', _boolean)  # /RELEASE
+_Same(_link, 'StackCommitSize', _string)
+_Same(_link, 'StackReserveSize', _string)  # /STACK
+_Same(_link, 'StripPrivateSymbols', _file_name)  # /PDBSTRIPPED
+_Same(_link, 'SupportUnloadOfDelayLoadedDLL', _boolean)  # /DELAY:UNLOAD
+_Same(_link, 'SuppressStartupBanner', _boolean)  # /NOLOGO
+_Same(_link, 'SwapRunFromCD', _boolean)  # /SWAPRUN:CD
+_Same(_link, 'TurnOffAssemblyGeneration', _boolean)  # /NOASSEMBLY
+_Same(_link, 'TypeLibraryFile', _file_name)  # /TLBOUT
+_Same(_link, 'TypeLibraryResourceID', _integer)  # /TLBID
+_Same(_link, 'UACUIAccess', _boolean)  # /uiAccess='true'
+_Same(_link, 'Version', _string)  # /VERSION
+
+_Same(_link, 'EnableCOMDATFolding', _newly_boolean)  # /OPT:ICF
+_Same(_link, 'FixedBaseAddress', _newly_boolean)  # /FIXED
+_Same(_link, 'LargeAddressAware', _newly_boolean)  # /LARGEADDRESSAWARE
+_Same(_link, 'OptimizeReferences', _newly_boolean)  # /OPT:REF
+_Same(_link, 'RandomizedBaseAddress', _newly_boolean)  # /DYNAMICBASE
+_Same(_link, 'TerminalServerAware', _newly_boolean)  # /TSAWARE
+
+_subsystem_enumeration = _Enumeration(
+    ['NotSet',
+     'Console',  # /SUBSYSTEM:CONSOLE
+     'Windows',  # /SUBSYSTEM:WINDOWS
+     'Native',  # /SUBSYSTEM:NATIVE
+     'EFI Application',  # /SUBSYSTEM:EFI_APPLICATION
+     'EFI Boot Service Driver',  # /SUBSYSTEM:EFI_BOOT_SERVICE_DRIVER
+     'EFI ROM',  # /SUBSYSTEM:EFI_ROM
+     'EFI Runtime',  # /SUBSYSTEM:EFI_RUNTIME_DRIVER
+     'WindowsCE'],  # /SUBSYSTEM:WINDOWSCE
+    new=['POSIX'])  # /SUBSYSTEM:POSIX
+
+_target_machine_enumeration = _Enumeration(
+    ['NotSet',
+     'MachineX86',  # /MACHINE:X86
+     None,
+     'MachineARM',  # /MACHINE:ARM
+     'MachineEBC',  # /MACHINE:EBC
+     'MachineIA64',  # /MACHINE:IA64
+     None,
+     'MachineMIPS',  # /MACHINE:MIPS
+     'MachineMIPS16',  # /MACHINE:MIPS16
+     'MachineMIPSFPU',  # /MACHINE:MIPSFPU
+     'MachineMIPSFPU16',  # /MACHINE:MIPSFPU16
+     None,
+     None,
+     None,
+     'MachineSH4',  # /MACHINE:SH4
+     None,
+     'MachineTHUMB',  # /MACHINE:THUMB
+     'MachineX64'])  # /MACHINE:X64
+
+_Same(_link, 'AssemblyDebug',
+      _Enumeration(['',
+                    'true',  # /ASSEMBLYDEBUG
+                    'false']))  # /ASSEMBLYDEBUG:DISABLE
+_Same(_link, 'CLRImageType',
+      _Enumeration(['Default',
+                    'ForceIJWImage',  # /CLRIMAGETYPE:IJW
+                    'ForcePureILImage',  # /Switch="CLRIMAGETYPE:PURE
+                    'ForceSafeILImage']))  # /Switch="CLRIMAGETYPE:SAFE
+_Same(_link, 'CLRThreadAttribute',
+      _Enumeration(['DefaultThreadingAttribute',  # /CLRTHREADATTRIBUTE:NONE
+                    'MTAThreadingAttribute',  # /CLRTHREADATTRIBUTE:MTA
+                    'STAThreadingAttribute']))  # /CLRTHREADATTRIBUTE:STA
+_Same(_link, 'DataExecutionPrevention',
+      _Enumeration(['',
+                    'false',  # /NXCOMPAT:NO
+                    'true']))  # /NXCOMPAT
+_Same(_link, 'Driver',
+      _Enumeration(['NotSet',
+                    'Driver',  # /Driver
+                    'UpOnly',  # /DRIVER:UPONLY
+                    'WDM']))  # /DRIVER:WDM
+_Same(_link, 'LinkTimeCodeGeneration',
+      _Enumeration(['Default',
+                    'UseLinkTimeCodeGeneration',  # /LTCG
+                    'PGInstrument',  # /LTCG:PGInstrument
+                    'PGOptimization',  # /LTCG:PGOptimize
+                    'PGUpdate']))  # /LTCG:PGUpdate
+_Same(_link, 'ShowProgress',
+      _Enumeration(['NotSet',
+                    'LinkVerbose',  # /VERBOSE
+                    'LinkVerboseLib'],  # /VERBOSE:Lib
+                   new=['LinkVerboseICF',  # /VERBOSE:ICF
+                        'LinkVerboseREF',  # /VERBOSE:REF
+                        'LinkVerboseSAFESEH',  # /VERBOSE:SAFESEH
+                        'LinkVerboseCLR']))  # /VERBOSE:CLR
+_Same(_link, 'SubSystem', _subsystem_enumeration)
+_Same(_link, 'TargetMachine', _target_machine_enumeration)
+_Same(_link, 'UACExecutionLevel',
+      _Enumeration(['AsInvoker',  # /level='asInvoker'
+                    'HighestAvailable',  # /level='highestAvailable'
+                    'RequireAdministrator']))  # /level='requireAdministrator'
+_Same(_link, 'MinimumRequiredVersion', _string)
+_Same(_link, 'TreatLinkerWarningAsErrors', _boolean)  # /WX
+
+
+# Options found in MSVS that have been renamed in MSBuild.
+_Renamed(_link, 'ErrorReporting', 'LinkErrorReporting',
+         _Enumeration(['NoErrorReport',  # /ERRORREPORT:NONE
+                       'PromptImmediately',  # /ERRORREPORT:PROMPT
+                       'QueueForNextLogin'],  # /ERRORREPORT:QUEUE
+                      new=['SendErrorReport']))  # /ERRORREPORT:SEND
+_Renamed(_link, 'IgnoreDefaultLibraryNames', 'IgnoreSpecificDefaultLibraries',
+         _file_list)  # /NODEFAULTLIB
+_Renamed(_link, 'ResourceOnlyDLL', 'NoEntryPoint', _boolean)  # /NOENTRY
+_Renamed(_link, 'SwapRunFromNet', 'SwapRunFromNET', _boolean)  # /SWAPRUN:NET
+
+_Moved(_link, 'GenerateManifest', '', _boolean)
+_Moved(_link, 'IgnoreImportLibrary', '', _boolean)
+_Moved(_link, 'LinkIncremental', '', _newly_boolean)
+_Moved(_link, 'LinkLibraryDependencies', 'ProjectReference', _boolean)
+_Moved(_link, 'UseLibraryDependencyInputs', 'ProjectReference', _boolean)
+
+# MSVS options not found in MSBuild.
+_MSVSOnly(_link, 'OptimizeForWindows98', _newly_boolean)
+_MSVSOnly(_link, 'UseUnicodeResponseFiles', _boolean)
+# These settings generate correctly in the MSVS output files when using
+# e.g. DelayLoadDLLs! or AdditionalDependencies! to exclude files from
+# configuration entries, but result in spurious artifacts which can be
+# safely ignored here.  See crbug.com/246570
+_MSVSOnly(_link, 'AdditionalLibraryDirectories_excluded', _folder_list)
+_MSVSOnly(_link, 'DelayLoadDLLs_excluded', _file_list)
+_MSVSOnly(_link, 'AdditionalDependencies_excluded', _file_list)
+
+# MSBuild options not found in MSVS.
+_MSBuildOnly(_link, 'BuildingInIDE', _boolean)
+_MSBuildOnly(_link, 'ImageHasSafeExceptionHandlers', _boolean)  # /SAFESEH
+_MSBuildOnly(_link, 'LinkDLL', _boolean)  # /DLL Visible='false'
+_MSBuildOnly(_link, 'LinkStatus', _boolean)  # /LTCG:STATUS
+_MSBuildOnly(_link, 'PreventDllBinding', _boolean)  # /ALLOWBIND
+_MSBuildOnly(_link, 'SupportNobindOfDelayLoadedDLL', _boolean)  # /DELAY:NOBIND
+_MSBuildOnly(_link, 'TrackerLogDirectory', _folder_name)
+_MSBuildOnly(_link, 'MSDOSStubFileName', _file_name)  # /STUB Visible='false'
+_MSBuildOnly(_link, 'SectionAlignment', _integer)  # /ALIGN
+_MSBuildOnly(_link, 'SpecifySectionAttributes', _string)  # /SECTION
+_MSBuildOnly(_link, 'ForceFileOutput',
+             _Enumeration([], new=['Enabled',  # /FORCE
+                                   # /FORCE:MULTIPLE
+                                   'MultiplyDefinedSymbolOnly',
+                                   'UndefinedSymbolOnly']))  # /FORCE:UNRESOLVED
+_MSBuildOnly(_link, 'CreateHotPatchableImage',
+             _Enumeration([], new=['Enabled',  # /FUNCTIONPADMIN
+                                   'X86Image',  # /FUNCTIONPADMIN:5
+                                   'X64Image',  # /FUNCTIONPADMIN:6
+                                   'ItaniumImage']))  # /FUNCTIONPADMIN:16
+_MSBuildOnly(_link, 'CLRSupportLastError',
+             _Enumeration([], new=['Enabled',  # /CLRSupportLastError
+                                   'Disabled',  # /CLRSupportLastError:NO
+                                   # /CLRSupportLastError:SYSTEMDLL
+                                   'SystemDlls']))
+
+
+# Directives for converting VCResourceCompilerTool to ResourceCompile.
+# See "c:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\1033\rc.xml" for
+# the schema of the MSBuild ResourceCompile settings.
+
+_Same(_rc, 'AdditionalOptions', _string_list)
+_Same(_rc, 'AdditionalIncludeDirectories', _folder_list)  # /I
+_Same(_rc, 'Culture', _Integer(msbuild_base=16))
+_Same(_rc, 'IgnoreStandardIncludePath', _boolean)  # /X
+_Same(_rc, 'PreprocessorDefinitions', _string_list)  # /D
+_Same(_rc, 'ResourceOutputFileName', _string)  # /fo
+_Same(_rc, 'ShowProgress', _boolean)  # /v
+# There is no UI in VisualStudio 2008 to set the following properties.
+# However they are found in CL and other tools.  Include them here for
+# completeness, as they are very likely to have the same usage pattern.
+_Same(_rc, 'SuppressStartupBanner', _boolean)  # /nologo
+_Same(_rc, 'UndefinePreprocessorDefinitions', _string_list)  # /u
+
+# MSBuild options not found in MSVS.
+_MSBuildOnly(_rc, 'NullTerminateStrings', _boolean)  # /n
+_MSBuildOnly(_rc, 'TrackerLogDirectory', _folder_name)
+
+
+# Directives for converting VCMIDLTool to Midl.
+# See "c:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\1033\midl.xml" for
+# the schema of the MSBuild Midl settings.
+
+_Same(_midl, 'AdditionalIncludeDirectories', _folder_list)  # /I
+_Same(_midl, 'AdditionalOptions', _string_list)
+_Same(_midl, 'CPreprocessOptions', _string)  # /cpp_opt
+_Same(_midl, 'ErrorCheckAllocations', _boolean)  # /error allocation
+_Same(_midl, 'ErrorCheckBounds', _boolean)  # /error bounds_check
+_Same(_midl, 'ErrorCheckEnumRange', _boolean)  # /error enum
+_Same(_midl, 'ErrorCheckRefPointers', _boolean)  # /error ref
+_Same(_midl, 'ErrorCheckStubData', _boolean)  # /error stub_data
+_Same(_midl, 'GenerateStublessProxies', _boolean)  # /Oicf
+_Same(_midl, 'GenerateTypeLibrary', _boolean)
+_Same(_midl, 'HeaderFileName', _file_name)  # /h
+_Same(_midl, 'IgnoreStandardIncludePath', _boolean)  # /no_def_idir
+_Same(_midl, 'InterfaceIdentifierFileName', _file_name)  # /iid
+_Same(_midl, 'MkTypLibCompatible', _boolean)  # /mktyplib203
+_Same(_midl, 'OutputDirectory', _string)  # /out
+_Same(_midl, 'PreprocessorDefinitions', _string_list)  # /D
+_Same(_midl, 'ProxyFileName', _file_name)  # /proxy
+_Same(_midl, 'RedirectOutputAndErrors', _file_name)  # /o
+_Same(_midl, 'SuppressStartupBanner', _boolean)  # /nologo
+_Same(_midl, 'TypeLibraryName', _file_name)  # /tlb
+_Same(_midl, 'UndefinePreprocessorDefinitions', _string_list)  # /U
+_Same(_midl, 'WarnAsError', _boolean)  # /WX
+
+_Same(_midl, 'DefaultCharType',
+      _Enumeration(['Unsigned',  # /char unsigned
+                    'Signed',  # /char signed
+                    'Ascii']))  # /char ascii7
+_Same(_midl, 'TargetEnvironment',
+      _Enumeration(['NotSet',
+                    'Win32',  # /env win32
+                    'Itanium',  # /env ia64
+                    'X64']))  # /env x64
+_Same(_midl, 'EnableErrorChecks',
+      _Enumeration(['EnableCustom',
+                    'None',  # /error none
+                    'All']))  # /error all
+_Same(_midl, 'StructMemberAlignment',
+      _Enumeration(['NotSet',
+                    '1',  # Zp1
+                    '2',  # Zp2
+                    '4',  # Zp4
+                    '8']))  # Zp8
+_Same(_midl, 'WarningLevel',
+      _Enumeration(['0',  # /W0
+                    '1',  # /W1
+                    '2',  # /W2
+                    '3',  # /W3
+                    '4']))  # /W4
+
+_Renamed(_midl, 'DLLDataFileName', 'DllDataFileName', _file_name)  # /dlldata
+_Renamed(_midl, 'ValidateParameters', 'ValidateAllParameters',
+         _boolean)  # /robust
+
+# MSBuild options not found in MSVS.
+_MSBuildOnly(_midl, 'ApplicationConfigurationMode', _boolean)  # /app_config
+_MSBuildOnly(_midl, 'ClientStubFile', _file_name)  # /cstub
+_MSBuildOnly(_midl, 'GenerateClientFiles',
+             _Enumeration([], new=['Stub',  # /client stub
+                                   'None']))  # /client none
+_MSBuildOnly(_midl, 'GenerateServerFiles',
+             _Enumeration([], new=['Stub',  # /client stub
+                                   'None']))  # /client none
+_MSBuildOnly(_midl, 'LocaleID', _integer)  # /lcid DECIMAL
+_MSBuildOnly(_midl, 'ServerStubFile', _file_name)  # /sstub
+_MSBuildOnly(_midl, 'SuppressCompilerWarnings', _boolean)  # /no_warn
+_MSBuildOnly(_midl, 'TrackerLogDirectory', _folder_name)
+_MSBuildOnly(_midl, 'TypeLibFormat',
+             _Enumeration([], new=['NewFormat',  # /newtlb
+                                   'OldFormat']))  # /oldtlb
+
+
+# Directives for converting VCLibrarianTool to Lib.
+# See "c:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\1033\lib.xml" for
+# the schema of the MSBuild Lib settings.
+
+_Same(_lib, 'AdditionalDependencies', _file_list)
+_Same(_lib, 'AdditionalLibraryDirectories', _folder_list)  # /LIBPATH
+_Same(_lib, 'AdditionalOptions', _string_list)
+_Same(_lib, 'ExportNamedFunctions', _string_list)  # /EXPORT
+_Same(_lib, 'ForceSymbolReferences', _string)  # /INCLUDE
+_Same(_lib, 'IgnoreAllDefaultLibraries', _boolean)  # /NODEFAULTLIB
+_Same(_lib, 'IgnoreSpecificDefaultLibraries', _file_list)  # /NODEFAULTLIB
+_Same(_lib, 'ModuleDefinitionFile', _file_name)  # /DEF
+_Same(_lib, 'OutputFile', _file_name)  # /OUT
+_Same(_lib, 'SuppressStartupBanner', _boolean)  # /NOLOGO
+_Same(_lib, 'UseUnicodeResponseFiles', _boolean)
+_Same(_lib, 'LinkTimeCodeGeneration', _boolean)  # /LTCG
+_Same(_lib, 'TargetMachine', _target_machine_enumeration)
+
+# TODO(jeanluc) _link defines the same value that gets moved to
+# ProjectReference.  We may want to validate that they are consistent.
+_Moved(_lib, 'LinkLibraryDependencies', 'ProjectReference', _boolean)
+
+# TODO(jeanluc) I don't think these are genuine settings but byproducts of Gyp.
+_MSVSOnly(_lib, 'AdditionalLibraryDirectories_excluded', _folder_list)
+
+_MSBuildOnly(_lib, 'DisplayLibrary', _string)  # /LIST Visible='false'
+_MSBuildOnly(_lib, 'ErrorReporting',
+             _Enumeration([], new=['PromptImmediately',  # /ERRORREPORT:PROMPT
+                                   'QueueForNextLogin',  # /ERRORREPORT:QUEUE
+                                   'SendErrorReport',  # /ERRORREPORT:SEND
+                                   'NoErrorReport']))  # /ERRORREPORT:NONE
+_MSBuildOnly(_lib, 'MinimumRequiredVersion', _string)
+_MSBuildOnly(_lib, 'Name', _file_name)  # /NAME
+_MSBuildOnly(_lib, 'RemoveObjects', _file_list)  # /REMOVE
+_MSBuildOnly(_lib, 'SubSystem', _subsystem_enumeration)
+_MSBuildOnly(_lib, 'TrackerLogDirectory', _folder_name)
+_MSBuildOnly(_lib, 'TreatLibWarningAsErrors', _boolean)  # /WX
+_MSBuildOnly(_lib, 'Verbose', _boolean)
+
+
+# Directives for converting VCManifestTool to Mt.
+# See "c:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\1033\mt.xml" for
+# the schema of the MSBuild Lib settings.
+
+# Options that have the same name in MSVS and MSBuild
+_Same(_manifest, 'AdditionalManifestFiles', _file_list)  # /manifest
+_Same(_manifest, 'AdditionalOptions', _string_list)
+_Same(_manifest, 'AssemblyIdentity', _string)  # /identity:
+_Same(_manifest, 'ComponentFileName', _file_name)  # /dll
+_Same(_manifest, 'GenerateCatalogFiles', _boolean)  # /makecdfs
+_Same(_manifest, 'InputResourceManifests', _string)  # /inputresource
+_Same(_manifest, 'OutputManifestFile', _file_name)  # /out
+_Same(_manifest, 'RegistrarScriptFile', _file_name)  # /rgs
+_Same(_manifest, 'ReplacementsFile', _file_name)  # /replacements
+_Same(_manifest, 'SuppressStartupBanner', _boolean)  # /nologo
+_Same(_manifest, 'TypeLibraryFile', _file_name)  # /tlb:
+_Same(_manifest, 'UpdateFileHashes', _boolean)  # /hashupdate
+_Same(_manifest, 'UpdateFileHashesSearchPath', _file_name)
+_Same(_manifest, 'VerboseOutput', _boolean)  # /verbose
+
+# Options that have moved location.
+_MovedAndRenamed(_manifest, 'ManifestResourceFile',
+                 'ManifestResourceCompile',
+                 'ResourceOutputFileName',
+                 _file_name)
+_Moved(_manifest, 'EmbedManifest', '', _boolean)
+
+# MSVS options not found in MSBuild.
+_MSVSOnly(_manifest, 'DependencyInformationFile', _file_name)
+_MSVSOnly(_manifest, 'UseFAT32Workaround', _boolean)
+_MSVSOnly(_manifest, 'UseUnicodeResponseFiles', _boolean)
+
+# MSBuild options not found in MSVS.
+_MSBuildOnly(_manifest, 'EnableDPIAwareness', _boolean)
+_MSBuildOnly(_manifest, 'GenerateCategoryTags', _boolean)  # /category
+_MSBuildOnly(_manifest, 'ManifestFromManagedAssembly',
+             _file_name)  # /managedassemblyname
+_MSBuildOnly(_manifest, 'OutputResourceManifests', _string)  # /outputresource
+_MSBuildOnly(_manifest, 'SuppressDependencyElement', _boolean)  # /nodependency
+_MSBuildOnly(_manifest, 'TrackerLogDirectory', _folder_name)
diff --git a/deps/gyp/pylib/gyp/MSVSSettings_test.py b/deps/gyp/pylib/gyp/MSVSSettings_test.py
new file mode 100755
index 0000000000..9bd37ec348
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSSettings_test.py
@@ -0,0 +1,1483 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Unit tests for the MSVSSettings.py file."""
+
+import StringIO
+import unittest
+import gyp.MSVSSettings as MSVSSettings
+
+
+class TestSequenceFunctions(unittest.TestCase):
+
+  def setUp(self):
+    self.stderr = StringIO.StringIO()
+
+  def _ExpectedWarnings(self, expected):
+    """Compares recorded lines to expected warnings."""
+    self.stderr.seek(0)
+    actual = self.stderr.read().split('\n')
+    actual = [line for line in actual if line]
+    self.assertEqual(sorted(expected), sorted(actual))
+
+  def testValidateMSVSSettings_tool_names(self):
+    """Tests that only MSVS tool names are allowed."""
+    MSVSSettings.ValidateMSVSSettings(
+        {'VCCLCompilerTool': {},
+         'VCLinkerTool': {},
+         'VCMIDLTool': {},
+         'foo': {},
+         'VCResourceCompilerTool': {},
+         'VCLibrarianTool': {},
+         'VCManifestTool': {},
+         'ClCompile': {}},
+        self.stderr)
+    self._ExpectedWarnings([
+        'Warning: unrecognized tool foo',
+        'Warning: unrecognized tool ClCompile'])
+
+  def testValidateMSVSSettings_settings(self):
+    """Tests that for invalid MSVS settings."""
+    MSVSSettings.ValidateMSVSSettings(
+        {'VCCLCompilerTool': {
+            'AdditionalIncludeDirectories': 'folder1;folder2',
+            'AdditionalOptions': ['string1', 'string2'],
+            'AdditionalUsingDirectories': 'folder1;folder2',
+            'AssemblerListingLocation': 'a_file_name',
+            'AssemblerOutput': '0',
+            'BasicRuntimeChecks': '5',
+            'BrowseInformation': 'fdkslj',
+            'BrowseInformationFile': 'a_file_name',
+            'BufferSecurityCheck': 'true',
+            'CallingConvention': '-1',
+            'CompileAs': '1',
+            'DebugInformationFormat': '2',
+            'DefaultCharIsUnsigned': 'true',
+            'Detect64BitPortabilityProblems': 'true',
+            'DisableLanguageExtensions': 'true',
+            'DisableSpecificWarnings': 'string1;string2',
+            'EnableEnhancedInstructionSet': '1',
+            'EnableFiberSafeOptimizations': 'true',
+            'EnableFunctionLevelLinking': 'true',
+            'EnableIntrinsicFunctions': 'true',
+            'EnablePREfast': 'true',
+            'Enableprefast': 'bogus',
+            'ErrorReporting': '1',
+            'ExceptionHandling': '1',
+            'ExpandAttributedSource': 'true',
+            'FavorSizeOrSpeed': '1',
+            'FloatingPointExceptions': 'true',
+            'FloatingPointModel': '1',
+            'ForceConformanceInForLoopScope': 'true',
+            'ForcedIncludeFiles': 'file1;file2',
+            'ForcedUsingFiles': 'file1;file2',
+            'GeneratePreprocessedFile': '1',
+            'GenerateXMLDocumentationFiles': 'true',
+            'IgnoreStandardIncludePath': 'true',
+            'InlineFunctionExpansion': '1',
+            'KeepComments': 'true',
+            'MinimalRebuild': 'true',
+            'ObjectFile': 'a_file_name',
+            'OmitDefaultLibName': 'true',
+            'OmitFramePointers': 'true',
+            'OpenMP': 'true',
+            'Optimization': '1',
+            'PrecompiledHeaderFile': 'a_file_name',
+            'PrecompiledHeaderThrough': 'a_file_name',
+            'PreprocessorDefinitions': 'string1;string2',
+            'ProgramDataBaseFileName': 'a_file_name',
+            'RuntimeLibrary': '1',
+            'RuntimeTypeInfo': 'true',
+            'ShowIncludes': 'true',
+            'SmallerTypeCheck': 'true',
+            'StringPooling': 'true',
+            'StructMemberAlignment': '1',
+            'SuppressStartupBanner': 'true',
+            'TreatWChar_tAsBuiltInType': 'true',
+            'UndefineAllPreprocessorDefinitions': 'true',
+            'UndefinePreprocessorDefinitions': 'string1;string2',
+            'UseFullPaths': 'true',
+            'UsePrecompiledHeader': '1',
+            'UseUnicodeResponseFiles': 'true',
+            'WarnAsError': 'true',
+            'WarningLevel': '1',
+            'WholeProgramOptimization': 'true',
+            'XMLDocumentationFileName': 'a_file_name',
+            'ZZXYZ': 'bogus'},
+         'VCLinkerTool': {
+             'AdditionalDependencies': 'file1;file2',
+             'AdditionalDependencies_excluded': 'file3',
+             'AdditionalLibraryDirectories': 'folder1;folder2',
+             'AdditionalManifestDependencies': 'file1;file2',
+             'AdditionalOptions': 'a string1',
+             'AddModuleNamesToAssembly': 'file1;file2',
+             'AllowIsolation': 'true',
+             'AssemblyDebug': '2',
+             'AssemblyLinkResource': 'file1;file2',
+             'BaseAddress': 'a string1',
+             'CLRImageType': '2',
+             'CLRThreadAttribute': '2',
+             'CLRUnmanagedCodeCheck': 'true',
+             'DataExecutionPrevention': '2',
+             'DelayLoadDLLs': 'file1;file2',
+             'DelaySign': 'true',
+             'Driver': '2',
+             'EmbedManagedResourceFile': 'file1;file2',
+             'EnableCOMDATFolding': '2',
+             'EnableUAC': 'true',
+             'EntryPointSymbol': 'a string1',
+             'ErrorReporting': '2',
+             'FixedBaseAddress': '2',
+             'ForceSymbolReferences': 'file1;file2',
+             'FunctionOrder': 'a_file_name',
+             'GenerateDebugInformation': 'true',
+             'GenerateManifest': 'true',
+             'GenerateMapFile': 'true',
+             'HeapCommitSize': 'a string1',
+             'HeapReserveSize': 'a string1',
+             'IgnoreAllDefaultLibraries': 'true',
+             'IgnoreDefaultLibraryNames': 'file1;file2',
+             'IgnoreEmbeddedIDL': 'true',
+             'IgnoreImportLibrary': 'true',
+             'ImportLibrary': 'a_file_name',
+             'KeyContainer': 'a_file_name',
+             'KeyFile': 'a_file_name',
+             'LargeAddressAware': '2',
+             'LinkIncremental': '2',
+             'LinkLibraryDependencies': 'true',
+             'LinkTimeCodeGeneration': '2',
+             'ManifestFile': 'a_file_name',
+             'MapExports': 'true',
+             'MapFileName': 'a_file_name',
+             'MergedIDLBaseFileName': 'a_file_name',
+             'MergeSections': 'a string1',
+             'MidlCommandFile': 'a_file_name',
+             'ModuleDefinitionFile': 'a_file_name',
+             'OptimizeForWindows98': '1',
+             'OptimizeReferences': '2',
+             'OutputFile': 'a_file_name',
+             'PerUserRedirection': 'true',
+             'Profile': 'true',
+             'ProfileGuidedDatabase': 'a_file_name',
+             'ProgramDatabaseFile': 'a_file_name',
+             'RandomizedBaseAddress': '2',
+             'RegisterOutput': 'true',
+             'ResourceOnlyDLL': 'true',
+             'SetChecksum': 'true',
+             'ShowProgress': '2',
+             'StackCommitSize': 'a string1',
+             'StackReserveSize': 'a string1',
+             'StripPrivateSymbols': 'a_file_name',
+             'SubSystem': '2',
+             'SupportUnloadOfDelayLoadedDLL': 'true',
+             'SuppressStartupBanner': 'true',
+             'SwapRunFromCD': 'true',
+             'SwapRunFromNet': 'true',
+             'TargetMachine': '2',
+             'TerminalServerAware': '2',
+             'TurnOffAssemblyGeneration': 'true',
+             'TypeLibraryFile': 'a_file_name',
+             'TypeLibraryResourceID': '33',
+             'UACExecutionLevel': '2',
+             'UACUIAccess': 'true',
+             'UseLibraryDependencyInputs': 'true',
+             'UseUnicodeResponseFiles': 'true',
+             'Version': 'a string1'},
+         'VCMIDLTool': {
+             'AdditionalIncludeDirectories': 'folder1;folder2',
+             'AdditionalOptions': 'a string1',
+             'CPreprocessOptions': 'a string1',
+             'DefaultCharType': '1',
+             'DLLDataFileName': 'a_file_name',
+             'EnableErrorChecks': '1',
+             'ErrorCheckAllocations': 'true',
+             'ErrorCheckBounds': 'true',
+             'ErrorCheckEnumRange': 'true',
+             'ErrorCheckRefPointers': 'true',
+             'ErrorCheckStubData': 'true',
+             'GenerateStublessProxies': 'true',
+             'GenerateTypeLibrary': 'true',
+             'HeaderFileName': 'a_file_name',
+             'IgnoreStandardIncludePath': 'true',
+             'InterfaceIdentifierFileName': 'a_file_name',
+             'MkTypLibCompatible': 'true',
+             'notgood': 'bogus',
+             'OutputDirectory': 'a string1',
+             'PreprocessorDefinitions': 'string1;string2',
+             'ProxyFileName': 'a_file_name',
+             'RedirectOutputAndErrors': 'a_file_name',
+             'StructMemberAlignment': '1',
+             'SuppressStartupBanner': 'true',
+             'TargetEnvironment': '1',
+             'TypeLibraryName': 'a_file_name',
+             'UndefinePreprocessorDefinitions': 'string1;string2',
+             'ValidateParameters': 'true',
+             'WarnAsError': 'true',
+             'WarningLevel': '1'},
+         'VCResourceCompilerTool': {
+             'AdditionalOptions': 'a string1',
+             'AdditionalIncludeDirectories': 'folder1;folder2',
+             'Culture': '1003',
+             'IgnoreStandardIncludePath': 'true',
+             'notgood2': 'bogus',
+             'PreprocessorDefinitions': 'string1;string2',
+             'ResourceOutputFileName': 'a string1',
+             'ShowProgress': 'true',
+             'SuppressStartupBanner': 'true',
+             'UndefinePreprocessorDefinitions': 'string1;string2'},
+         'VCLibrarianTool': {
+             'AdditionalDependencies': 'file1;file2',
+             'AdditionalLibraryDirectories': 'folder1;folder2',
+             'AdditionalOptions': 'a string1',
+             'ExportNamedFunctions': 'string1;string2',
+             'ForceSymbolReferences': 'a string1',
+             'IgnoreAllDefaultLibraries': 'true',
+             'IgnoreSpecificDefaultLibraries': 'file1;file2',
+             'LinkLibraryDependencies': 'true',
+             'ModuleDefinitionFile': 'a_file_name',
+             'OutputFile': 'a_file_name',
+             'SuppressStartupBanner': 'true',
+             'UseUnicodeResponseFiles': 'true'},
+         'VCManifestTool': {
+             'AdditionalManifestFiles': 'file1;file2',
+             'AdditionalOptions': 'a string1',
+             'AssemblyIdentity': 'a string1',
+             'ComponentFileName': 'a_file_name',
+             'DependencyInformationFile': 'a_file_name',
+             'GenerateCatalogFiles': 'true',
+             'InputResourceManifests': 'a string1',
+             'ManifestResourceFile': 'a_file_name',
+             'OutputManifestFile': 'a_file_name',
+             'RegistrarScriptFile': 'a_file_name',
+             'ReplacementsFile': 'a_file_name',
+             'SuppressStartupBanner': 'true',
+             'TypeLibraryFile': 'a_file_name',
+             'UpdateFileHashes': 'truel',
+             'UpdateFileHashesSearchPath': 'a_file_name',
+             'UseFAT32Workaround': 'true',
+             'UseUnicodeResponseFiles': 'true',
+             'VerboseOutput': 'true'}},
+        self.stderr)
+    self._ExpectedWarnings([
+        'Warning: for VCCLCompilerTool/BasicRuntimeChecks, '
+        'index value (5) not in expected range [0, 4)',
+        'Warning: for VCCLCompilerTool/BrowseInformation, '
+        "invalid literal for int() with base 10: 'fdkslj'",
+        'Warning: for VCCLCompilerTool/CallingConvention, '
+        'index value (-1) not in expected range [0, 3)',
+        'Warning: for VCCLCompilerTool/DebugInformationFormat, '
+        'converted value for 2 not specified.',
+        'Warning: unrecognized setting VCCLCompilerTool/Enableprefast',
+        'Warning: unrecognized setting VCCLCompilerTool/ZZXYZ',
+        'Warning: for VCLinkerTool/TargetMachine, '
+        'converted value for 2 not specified.',
+        'Warning: unrecognized setting VCMIDLTool/notgood',
+        'Warning: unrecognized setting VCResourceCompilerTool/notgood2',
+        'Warning: for VCManifestTool/UpdateFileHashes, '
+        "expected bool; got 'truel'"
+        ''])
+
+  def testValidateMSBuildSettings_settings(self):
+    """Tests that for invalid MSBuild settings."""
+    MSVSSettings.ValidateMSBuildSettings(
+        {'ClCompile': {
+            'AdditionalIncludeDirectories': 'folder1;folder2',
+            'AdditionalOptions': ['string1', 'string2'],
+            'AdditionalUsingDirectories': 'folder1;folder2',
+            'AssemblerListingLocation': 'a_file_name',
+            'AssemblerOutput': 'NoListing',
+            'BasicRuntimeChecks': 'StackFrameRuntimeCheck',
+            'BrowseInformation': 'false',
+            'BrowseInformationFile': 'a_file_name',
+            'BufferSecurityCheck': 'true',
+            'BuildingInIDE': 'true',
+            'CallingConvention': 'Cdecl',
+            'CompileAs': 'CompileAsC',
+            'CompileAsManaged': 'Pure',
+            'CreateHotpatchableImage': 'true',
+            'DebugInformationFormat': 'ProgramDatabase',
+            'DisableLanguageExtensions': 'true',
+            'DisableSpecificWarnings': 'string1;string2',
+            'EnableEnhancedInstructionSet': 'StreamingSIMDExtensions',
+            'EnableFiberSafeOptimizations': 'true',
+            'EnablePREfast': 'true',
+            'Enableprefast': 'bogus',
+            'ErrorReporting': 'Prompt',
+            'ExceptionHandling': 'SyncCThrow',
+            'ExpandAttributedSource': 'true',
+            'FavorSizeOrSpeed': 'Neither',
+            'FloatingPointExceptions': 'true',
+            'FloatingPointModel': 'Precise',
+            'ForceConformanceInForLoopScope': 'true',
+            'ForcedIncludeFiles': 'file1;file2',
+            'ForcedUsingFiles': 'file1;file2',
+            'FunctionLevelLinking': 'false',
+            'GenerateXMLDocumentationFiles': 'true',
+            'IgnoreStandardIncludePath': 'true',
+            'InlineFunctionExpansion': 'OnlyExplicitInline',
+            'IntrinsicFunctions': 'false',
+            'MinimalRebuild': 'true',
+            'MultiProcessorCompilation': 'true',
+            'ObjectFileName': 'a_file_name',
+            'OmitDefaultLibName': 'true',
+            'OmitFramePointers': 'true',
+            'OpenMPSupport': 'true',
+            'Optimization': 'Disabled',
+            'PrecompiledHeader': 'NotUsing',
+            'PrecompiledHeaderFile': 'a_file_name',
+            'PrecompiledHeaderOutputFile': 'a_file_name',
+            'PreprocessKeepComments': 'true',
+            'PreprocessorDefinitions': 'string1;string2',
+            'PreprocessOutputPath': 'a string1',
+            'PreprocessSuppressLineNumbers': 'false',
+            'PreprocessToFile': 'false',
+            'ProcessorNumber': '33',
+            'ProgramDataBaseFileName': 'a_file_name',
+            'RuntimeLibrary': 'MultiThreaded',
+            'RuntimeTypeInfo': 'true',
+            'ShowIncludes': 'true',
+            'SmallerTypeCheck': 'true',
+            'StringPooling': 'true',
+            'StructMemberAlignment': '1Byte',
+            'SuppressStartupBanner': 'true',
+            'TrackerLogDirectory': 'a_folder',
+            'TreatSpecificWarningsAsErrors': 'string1;string2',
+            'TreatWarningAsError': 'true',
+            'TreatWChar_tAsBuiltInType': 'true',
+            'UndefineAllPreprocessorDefinitions': 'true',
+            'UndefinePreprocessorDefinitions': 'string1;string2',
+            'UseFullPaths': 'true',
+            'UseUnicodeForAssemblerListing': 'true',
+            'WarningLevel': 'TurnOffAllWarnings',
+            'WholeProgramOptimization': 'true',
+            'XMLDocumentationFileName': 'a_file_name',
+            'ZZXYZ': 'bogus'},
+         'Link': {
+             'AdditionalDependencies': 'file1;file2',
+             'AdditionalLibraryDirectories': 'folder1;folder2',
+             'AdditionalManifestDependencies': 'file1;file2',
+             'AdditionalOptions': 'a string1',
+             'AddModuleNamesToAssembly': 'file1;file2',
+             'AllowIsolation': 'true',
+             'AssemblyDebug': '',
+             'AssemblyLinkResource': 'file1;file2',
+             'BaseAddress': 'a string1',
+             'BuildingInIDE': 'true',
+             'CLRImageType': 'ForceIJWImage',
+             'CLRSupportLastError': 'Enabled',
+             'CLRThreadAttribute': 'MTAThreadingAttribute',
+             'CLRUnmanagedCodeCheck': 'true',
+             'CreateHotPatchableImage': 'X86Image',
+             'DataExecutionPrevention': 'false',
+             'DelayLoadDLLs': 'file1;file2',
+             'DelaySign': 'true',
+             'Driver': 'NotSet',
+             'EmbedManagedResourceFile': 'file1;file2',
+             'EnableCOMDATFolding': 'false',
+             'EnableUAC': 'true',
+             'EntryPointSymbol': 'a string1',
+             'FixedBaseAddress': 'false',
+             'ForceFileOutput': 'Enabled',
+             'ForceSymbolReferences': 'file1;file2',
+             'FunctionOrder': 'a_file_name',
+             'GenerateDebugInformation': 'true',
+             'GenerateMapFile': 'true',
+             'HeapCommitSize': 'a string1',
+             'HeapReserveSize': 'a string1',
+             'IgnoreAllDefaultLibraries': 'true',
+             'IgnoreEmbeddedIDL': 'true',
+             'IgnoreSpecificDefaultLibraries': 'a_file_list',
+             'ImageHasSafeExceptionHandlers': 'true',
+             'ImportLibrary': 'a_file_name',
+             'KeyContainer': 'a_file_name',
+             'KeyFile': 'a_file_name',
+             'LargeAddressAware': 'false',
+             'LinkDLL': 'true',
+             'LinkErrorReporting': 'SendErrorReport',
+             'LinkStatus': 'true',
+             'LinkTimeCodeGeneration': 'UseLinkTimeCodeGeneration',
+             'ManifestFile': 'a_file_name',
+             'MapExports': 'true',
+             'MapFileName': 'a_file_name',
+             'MergedIDLBaseFileName': 'a_file_name',
+             'MergeSections': 'a string1',
+             'MidlCommandFile': 'a_file_name',
+             'MinimumRequiredVersion': 'a string1',
+             'ModuleDefinitionFile': 'a_file_name',
+             'MSDOSStubFileName': 'a_file_name',
+             'NoEntryPoint': 'true',
+             'OptimizeReferences': 'false',
+             'OutputFile': 'a_file_name',
+             'PerUserRedirection': 'true',
+             'PreventDllBinding': 'true',
+             'Profile': 'true',
+             'ProfileGuidedDatabase': 'a_file_name',
+             'ProgramDatabaseFile': 'a_file_name',
+             'RandomizedBaseAddress': 'false',
+             'RegisterOutput': 'true',
+             'SectionAlignment': '33',
+             'SetChecksum': 'true',
+             'ShowProgress': 'LinkVerboseREF',
+             'SpecifySectionAttributes': 'a string1',
+             'StackCommitSize': 'a string1',
+             'StackReserveSize': 'a string1',
+             'StripPrivateSymbols': 'a_file_name',
+             'SubSystem': 'Console',
+             'SupportNobindOfDelayLoadedDLL': 'true',
+             'SupportUnloadOfDelayLoadedDLL': 'true',
+             'SuppressStartupBanner': 'true',
+             'SwapRunFromCD': 'true',
+             'SwapRunFromNET': 'true',
+             'TargetMachine': 'MachineX86',
+             'TerminalServerAware': 'false',
+             'TrackerLogDirectory': 'a_folder',
+             'TreatLinkerWarningAsErrors': 'true',
+             'TurnOffAssemblyGeneration': 'true',
+             'TypeLibraryFile': 'a_file_name',
+             'TypeLibraryResourceID': '33',
+             'UACExecutionLevel': 'AsInvoker',
+             'UACUIAccess': 'true',
+             'Version': 'a string1'},
+         'ResourceCompile': {
+             'AdditionalIncludeDirectories': 'folder1;folder2',
+             'AdditionalOptions': 'a string1',
+             'Culture': '0x236',
+             'IgnoreStandardIncludePath': 'true',
+             'NullTerminateStrings': 'true',
+             'PreprocessorDefinitions': 'string1;string2',
+             'ResourceOutputFileName': 'a string1',
+             'ShowProgress': 'true',
+             'SuppressStartupBanner': 'true',
+             'TrackerLogDirectory': 'a_folder',
+             'UndefinePreprocessorDefinitions': 'string1;string2'},
+         'Midl': {
+             'AdditionalIncludeDirectories': 'folder1;folder2',
+             'AdditionalOptions': 'a string1',
+             'ApplicationConfigurationMode': 'true',
+             'ClientStubFile': 'a_file_name',
+             'CPreprocessOptions': 'a string1',
+             'DefaultCharType': 'Signed',
+             'DllDataFileName': 'a_file_name',
+             'EnableErrorChecks': 'EnableCustom',
+             'ErrorCheckAllocations': 'true',
+             'ErrorCheckBounds': 'true',
+             'ErrorCheckEnumRange': 'true',
+             'ErrorCheckRefPointers': 'true',
+             'ErrorCheckStubData': 'true',
+             'GenerateClientFiles': 'Stub',
+             'GenerateServerFiles': 'None',
+             'GenerateStublessProxies': 'true',
+             'GenerateTypeLibrary': 'true',
+             'HeaderFileName': 'a_file_name',
+             'IgnoreStandardIncludePath': 'true',
+             'InterfaceIdentifierFileName': 'a_file_name',
+             'LocaleID': '33',
+             'MkTypLibCompatible': 'true',
+             'OutputDirectory': 'a string1',
+             'PreprocessorDefinitions': 'string1;string2',
+             'ProxyFileName': 'a_file_name',
+             'RedirectOutputAndErrors': 'a_file_name',
+             'ServerStubFile': 'a_file_name',
+             'StructMemberAlignment': 'NotSet',
+             'SuppressCompilerWarnings': 'true',
+             'SuppressStartupBanner': 'true',
+             'TargetEnvironment': 'Itanium',
+             'TrackerLogDirectory': 'a_folder',
+             'TypeLibFormat': 'NewFormat',
+             'TypeLibraryName': 'a_file_name',
+             'UndefinePreprocessorDefinitions': 'string1;string2',
+             'ValidateAllParameters': 'true',
+             'WarnAsError': 'true',
+             'WarningLevel': '1'},
+         'Lib': {
+             'AdditionalDependencies': 'file1;file2',
+             'AdditionalLibraryDirectories': 'folder1;folder2',
+             'AdditionalOptions': 'a string1',
+             'DisplayLibrary': 'a string1',
+             'ErrorReporting': 'PromptImmediately',
+             'ExportNamedFunctions': 'string1;string2',
+             'ForceSymbolReferences': 'a string1',
+             'IgnoreAllDefaultLibraries': 'true',
+             'IgnoreSpecificDefaultLibraries': 'file1;file2',
+             'LinkTimeCodeGeneration': 'true',
+             'MinimumRequiredVersion': 'a string1',
+             'ModuleDefinitionFile': 'a_file_name',
+             'Name': 'a_file_name',
+             'OutputFile': 'a_file_name',
+             'RemoveObjects': 'file1;file2',
+             'SubSystem': 'Console',
+             'SuppressStartupBanner': 'true',
+             'TargetMachine': 'MachineX86i',
+             'TrackerLogDirectory': 'a_folder',
+             'TreatLibWarningAsErrors': 'true',
+             'UseUnicodeResponseFiles': 'true',
+             'Verbose': 'true'},
+         'Manifest': {
+             'AdditionalManifestFiles': 'file1;file2',
+             'AdditionalOptions': 'a string1',
+             'AssemblyIdentity': 'a string1',
+             'ComponentFileName': 'a_file_name',
+             'EnableDPIAwareness': 'fal',
+             'GenerateCatalogFiles': 'truel',
+             'GenerateCategoryTags': 'true',
+             'InputResourceManifests': 'a string1',
+             'ManifestFromManagedAssembly': 'a_file_name',
+             'notgood3': 'bogus',
+             'OutputManifestFile': 'a_file_name',
+             'OutputResourceManifests': 'a string1',
+             'RegistrarScriptFile': 'a_file_name',
+             'ReplacementsFile': 'a_file_name',
+             'SuppressDependencyElement': 'true',
+             'SuppressStartupBanner': 'true',
+             'TrackerLogDirectory': 'a_folder',
+             'TypeLibraryFile': 'a_file_name',
+             'UpdateFileHashes': 'true',
+             'UpdateFileHashesSearchPath': 'a_file_name',
+             'VerboseOutput': 'true'},
+         'ProjectReference': {
+             'LinkLibraryDependencies': 'true',
+             'UseLibraryDependencyInputs': 'true'},
+         'ManifestResourceCompile': {
+             'ResourceOutputFileName': 'a_file_name'},
+         '': {
+             'EmbedManifest': 'true',
+             'GenerateManifest': 'true',
+             'IgnoreImportLibrary': 'true',
+             'LinkIncremental': 'false'}},
+        self.stderr)
+    self._ExpectedWarnings([
+        'Warning: unrecognized setting ClCompile/Enableprefast',
+        'Warning: unrecognized setting ClCompile/ZZXYZ',
+        'Warning: unrecognized setting Manifest/notgood3',
+        'Warning: for Manifest/GenerateCatalogFiles, '
+        "expected bool; got 'truel'",
+        'Warning: for Lib/TargetMachine, unrecognized enumerated value '
+        'MachineX86i',
+        "Warning: for Manifest/EnableDPIAwareness, expected bool; got 'fal'"])
+
+  def testConvertToMSBuildSettings_empty(self):
+    """Tests an empty conversion."""
+    msvs_settings = {}
+    expected_msbuild_settings = {}
+    actual_msbuild_settings = MSVSSettings.ConvertToMSBuildSettings(
+        msvs_settings,
+        self.stderr)
+    self.assertEqual(expected_msbuild_settings, actual_msbuild_settings)
+    self._ExpectedWarnings([])
+
+  def testConvertToMSBuildSettings_minimal(self):
+    """Tests a minimal conversion."""
+    msvs_settings = {
+        'VCCLCompilerTool': {
+            'AdditionalIncludeDirectories': 'dir1',
+            'AdditionalOptions': '/foo',
+            'BasicRuntimeChecks': '0',
+            },
+        'VCLinkerTool': {
+            'LinkTimeCodeGeneration': '1',
+            'ErrorReporting': '1',
+            'DataExecutionPrevention': '2',
+            },
+        }
+    expected_msbuild_settings = {
+        'ClCompile': {
+            'AdditionalIncludeDirectories': 'dir1',
+            'AdditionalOptions': '/foo',
+            'BasicRuntimeChecks': 'Default',
+            },
+        'Link': {
+            'LinkTimeCodeGeneration': 'UseLinkTimeCodeGeneration',
+            'LinkErrorReporting': 'PromptImmediately',
+            'DataExecutionPrevention': 'true',
+            },
+        }
+    actual_msbuild_settings = MSVSSettings.ConvertToMSBuildSettings(
+        msvs_settings,
+        self.stderr)
+    self.assertEqual(expected_msbuild_settings, actual_msbuild_settings)
+    self._ExpectedWarnings([])
+
+  def testConvertToMSBuildSettings_warnings(self):
+    """Tests conversion that generates warnings."""
+    msvs_settings = {
+        'VCCLCompilerTool': {
+            'AdditionalIncludeDirectories': '1',
+            'AdditionalOptions': '2',
+            # These are incorrect values:
+            'BasicRuntimeChecks': '12',
+            'BrowseInformation': '21',
+            'UsePrecompiledHeader': '13',
+            'GeneratePreprocessedFile': '14'},
+        'VCLinkerTool': {
+            # These are incorrect values:
+            'Driver': '10',
+            'LinkTimeCodeGeneration': '31',
+            'ErrorReporting': '21',
+            'FixedBaseAddress': '6'},
+        'VCResourceCompilerTool': {
+            # Custom
+            'Culture': '1003'}}
+    expected_msbuild_settings = {
+        'ClCompile': {
+            'AdditionalIncludeDirectories': '1',
+            'AdditionalOptions': '2'},
+        'Link': {},
+        'ResourceCompile': {
+            # Custom
+            'Culture': '0x03eb'}}
+    actual_msbuild_settings = MSVSSettings.ConvertToMSBuildSettings(
+        msvs_settings,
+        self.stderr)
+    self.assertEqual(expected_msbuild_settings, actual_msbuild_settings)
+    self._ExpectedWarnings([
+        'Warning: while converting VCCLCompilerTool/BasicRuntimeChecks to '
+        'MSBuild, index value (12) not in expected range [0, 4)',
+        'Warning: while converting VCCLCompilerTool/BrowseInformation to '
+        'MSBuild, index value (21) not in expected range [0, 3)',
+        'Warning: while converting VCCLCompilerTool/UsePrecompiledHeader to '
+        'MSBuild, index value (13) not in expected range [0, 3)',
+        'Warning: while converting VCCLCompilerTool/GeneratePreprocessedFile to '
+        'MSBuild, value must be one of [0, 1, 2]; got 14',
+
+        'Warning: while converting VCLinkerTool/Driver to '
+        'MSBuild, index value (10) not in expected range [0, 4)',
+        'Warning: while converting VCLinkerTool/LinkTimeCodeGeneration to '
+        'MSBuild, index value (31) not in expected range [0, 5)',
+        'Warning: while converting VCLinkerTool/ErrorReporting to '
+        'MSBuild, index value (21) not in expected range [0, 3)',
+        'Warning: while converting VCLinkerTool/FixedBaseAddress to '
+        'MSBuild, index value (6) not in expected range [0, 3)',
+        ])
+
+  def testConvertToMSBuildSettings_full_synthetic(self):
+    """Tests conversion of all the MSBuild settings."""
+    msvs_settings = {
+        'VCCLCompilerTool': {
+            'AdditionalIncludeDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'AdditionalUsingDirectories': 'folder1;folder2;folder3',
+            'AssemblerListingLocation': 'a_file_name',
+            'AssemblerOutput': '0',
+            'BasicRuntimeChecks': '1',
+            'BrowseInformation': '2',
+            'BrowseInformationFile': 'a_file_name',
+            'BufferSecurityCheck': 'true',
+            'CallingConvention': '0',
+            'CompileAs': '1',
+            'DebugInformationFormat': '4',
+            'DefaultCharIsUnsigned': 'true',
+            'Detect64BitPortabilityProblems': 'true',
+            'DisableLanguageExtensions': 'true',
+            'DisableSpecificWarnings': 'd1;d2;d3',
+            'EnableEnhancedInstructionSet': '0',
+            'EnableFiberSafeOptimizations': 'true',
+            'EnableFunctionLevelLinking': 'true',
+            'EnableIntrinsicFunctions': 'true',
+            'EnablePREfast': 'true',
+            'ErrorReporting': '1',
+            'ExceptionHandling': '2',
+            'ExpandAttributedSource': 'true',
+            'FavorSizeOrSpeed': '0',
+            'FloatingPointExceptions': 'true',
+            'FloatingPointModel': '1',
+            'ForceConformanceInForLoopScope': 'true',
+            'ForcedIncludeFiles': 'file1;file2;file3',
+            'ForcedUsingFiles': 'file1;file2;file3',
+            'GeneratePreprocessedFile': '1',
+            'GenerateXMLDocumentationFiles': 'true',
+            'IgnoreStandardIncludePath': 'true',
+            'InlineFunctionExpansion': '2',
+            'KeepComments': 'true',
+            'MinimalRebuild': 'true',
+            'ObjectFile': 'a_file_name',
+            'OmitDefaultLibName': 'true',
+            'OmitFramePointers': 'true',
+            'OpenMP': 'true',
+            'Optimization': '3',
+            'PrecompiledHeaderFile': 'a_file_name',
+            'PrecompiledHeaderThrough': 'a_file_name',
+            'PreprocessorDefinitions': 'd1;d2;d3',
+            'ProgramDataBaseFileName': 'a_file_name',
+            'RuntimeLibrary': '0',
+            'RuntimeTypeInfo': 'true',
+            'ShowIncludes': 'true',
+            'SmallerTypeCheck': 'true',
+            'StringPooling': 'true',
+            'StructMemberAlignment': '1',
+            'SuppressStartupBanner': 'true',
+            'TreatWChar_tAsBuiltInType': 'true',
+            'UndefineAllPreprocessorDefinitions': 'true',
+            'UndefinePreprocessorDefinitions': 'd1;d2;d3',
+            'UseFullPaths': 'true',
+            'UsePrecompiledHeader': '1',
+            'UseUnicodeResponseFiles': 'true',
+            'WarnAsError': 'true',
+            'WarningLevel': '2',
+            'WholeProgramOptimization': 'true',
+            'XMLDocumentationFileName': 'a_file_name'},
+        'VCLinkerTool': {
+            'AdditionalDependencies': 'file1;file2;file3',
+            'AdditionalLibraryDirectories': 'folder1;folder2;folder3',
+            'AdditionalLibraryDirectories_excluded': 'folder1;folder2;folder3',
+            'AdditionalManifestDependencies': 'file1;file2;file3',
+            'AdditionalOptions': 'a_string',
+            'AddModuleNamesToAssembly': 'file1;file2;file3',
+            'AllowIsolation': 'true',
+            'AssemblyDebug': '0',
+            'AssemblyLinkResource': 'file1;file2;file3',
+            'BaseAddress': 'a_string',
+            'CLRImageType': '1',
+            'CLRThreadAttribute': '2',
+            'CLRUnmanagedCodeCheck': 'true',
+            'DataExecutionPrevention': '0',
+            'DelayLoadDLLs': 'file1;file2;file3',
+            'DelaySign': 'true',
+            'Driver': '1',
+            'EmbedManagedResourceFile': 'file1;file2;file3',
+            'EnableCOMDATFolding': '0',
+            'EnableUAC': 'true',
+            'EntryPointSymbol': 'a_string',
+            'ErrorReporting': '0',
+            'FixedBaseAddress': '1',
+            'ForceSymbolReferences': 'file1;file2;file3',
+            'FunctionOrder': 'a_file_name',
+            'GenerateDebugInformation': 'true',
+            'GenerateManifest': 'true',
+            'GenerateMapFile': 'true',
+            'HeapCommitSize': 'a_string',
+            'HeapReserveSize': 'a_string',
+            'IgnoreAllDefaultLibraries': 'true',
+            'IgnoreDefaultLibraryNames': 'file1;file2;file3',
+            'IgnoreEmbeddedIDL': 'true',
+            'IgnoreImportLibrary': 'true',
+            'ImportLibrary': 'a_file_name',
+            'KeyContainer': 'a_file_name',
+            'KeyFile': 'a_file_name',
+            'LargeAddressAware': '2',
+            'LinkIncremental': '1',
+            'LinkLibraryDependencies': 'true',
+            'LinkTimeCodeGeneration': '2',
+            'ManifestFile': 'a_file_name',
+            'MapExports': 'true',
+            'MapFileName': 'a_file_name',
+            'MergedIDLBaseFileName': 'a_file_name',
+            'MergeSections': 'a_string',
+            'MidlCommandFile': 'a_file_name',
+            'ModuleDefinitionFile': 'a_file_name',
+            'OptimizeForWindows98': '1',
+            'OptimizeReferences': '0',
+            'OutputFile': 'a_file_name',
+            'PerUserRedirection': 'true',
+            'Profile': 'true',
+            'ProfileGuidedDatabase': 'a_file_name',
+            'ProgramDatabaseFile': 'a_file_name',
+            'RandomizedBaseAddress': '1',
+            'RegisterOutput': 'true',
+            'ResourceOnlyDLL': 'true',
+            'SetChecksum': 'true',
+            'ShowProgress': '0',
+            'StackCommitSize': 'a_string',
+            'StackReserveSize': 'a_string',
+            'StripPrivateSymbols': 'a_file_name',
+            'SubSystem': '2',
+            'SupportUnloadOfDelayLoadedDLL': 'true',
+            'SuppressStartupBanner': 'true',
+            'SwapRunFromCD': 'true',
+            'SwapRunFromNet': 'true',
+            'TargetMachine': '3',
+            'TerminalServerAware': '2',
+            'TurnOffAssemblyGeneration': 'true',
+            'TypeLibraryFile': 'a_file_name',
+            'TypeLibraryResourceID': '33',
+            'UACExecutionLevel': '1',
+            'UACUIAccess': 'true',
+            'UseLibraryDependencyInputs': 'false',
+            'UseUnicodeResponseFiles': 'true',
+            'Version': 'a_string'},
+        'VCResourceCompilerTool': {
+            'AdditionalIncludeDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'Culture': '1003',
+            'IgnoreStandardIncludePath': 'true',
+            'PreprocessorDefinitions': 'd1;d2;d3',
+            'ResourceOutputFileName': 'a_string',
+            'ShowProgress': 'true',
+            'SuppressStartupBanner': 'true',
+            'UndefinePreprocessorDefinitions': 'd1;d2;d3'},
+        'VCMIDLTool': {
+            'AdditionalIncludeDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'CPreprocessOptions': 'a_string',
+            'DefaultCharType': '0',
+            'DLLDataFileName': 'a_file_name',
+            'EnableErrorChecks': '2',
+            'ErrorCheckAllocations': 'true',
+            'ErrorCheckBounds': 'true',
+            'ErrorCheckEnumRange': 'true',
+            'ErrorCheckRefPointers': 'true',
+            'ErrorCheckStubData': 'true',
+            'GenerateStublessProxies': 'true',
+            'GenerateTypeLibrary': 'true',
+            'HeaderFileName': 'a_file_name',
+            'IgnoreStandardIncludePath': 'true',
+            'InterfaceIdentifierFileName': 'a_file_name',
+            'MkTypLibCompatible': 'true',
+            'OutputDirectory': 'a_string',
+            'PreprocessorDefinitions': 'd1;d2;d3',
+            'ProxyFileName': 'a_file_name',
+            'RedirectOutputAndErrors': 'a_file_name',
+            'StructMemberAlignment': '3',
+            'SuppressStartupBanner': 'true',
+            'TargetEnvironment': '1',
+            'TypeLibraryName': 'a_file_name',
+            'UndefinePreprocessorDefinitions': 'd1;d2;d3',
+            'ValidateParameters': 'true',
+            'WarnAsError': 'true',
+            'WarningLevel': '4'},
+        'VCLibrarianTool': {
+            'AdditionalDependencies': 'file1;file2;file3',
+            'AdditionalLibraryDirectories': 'folder1;folder2;folder3',
+            'AdditionalLibraryDirectories_excluded': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'ExportNamedFunctions': 'd1;d2;d3',
+            'ForceSymbolReferences': 'a_string',
+            'IgnoreAllDefaultLibraries': 'true',
+            'IgnoreSpecificDefaultLibraries': 'file1;file2;file3',
+            'LinkLibraryDependencies': 'true',
+            'ModuleDefinitionFile': 'a_file_name',
+            'OutputFile': 'a_file_name',
+            'SuppressStartupBanner': 'true',
+            'UseUnicodeResponseFiles': 'true'},
+        'VCManifestTool': {
+            'AdditionalManifestFiles': 'file1;file2;file3',
+            'AdditionalOptions': 'a_string',
+            'AssemblyIdentity': 'a_string',
+            'ComponentFileName': 'a_file_name',
+            'DependencyInformationFile': 'a_file_name',
+            'EmbedManifest': 'true',
+            'GenerateCatalogFiles': 'true',
+            'InputResourceManifests': 'a_string',
+            'ManifestResourceFile': 'my_name',
+            'OutputManifestFile': 'a_file_name',
+            'RegistrarScriptFile': 'a_file_name',
+            'ReplacementsFile': 'a_file_name',
+            'SuppressStartupBanner': 'true',
+            'TypeLibraryFile': 'a_file_name',
+            'UpdateFileHashes': 'true',
+            'UpdateFileHashesSearchPath': 'a_file_name',
+            'UseFAT32Workaround': 'true',
+            'UseUnicodeResponseFiles': 'true',
+            'VerboseOutput': 'true'}}
+    expected_msbuild_settings = {
+        'ClCompile': {
+            'AdditionalIncludeDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string /J',
+            'AdditionalUsingDirectories': 'folder1;folder2;folder3',
+            'AssemblerListingLocation': 'a_file_name',
+            'AssemblerOutput': 'NoListing',
+            'BasicRuntimeChecks': 'StackFrameRuntimeCheck',
+            'BrowseInformation': 'true',
+            'BrowseInformationFile': 'a_file_name',
+            'BufferSecurityCheck': 'true',
+            'CallingConvention': 'Cdecl',
+            'CompileAs': 'CompileAsC',
+            'DebugInformationFormat': 'EditAndContinue',
+            'DisableLanguageExtensions': 'true',
+            'DisableSpecificWarnings': 'd1;d2;d3',
+            'EnableEnhancedInstructionSet': 'NotSet',
+            'EnableFiberSafeOptimizations': 'true',
+            'EnablePREfast': 'true',
+            'ErrorReporting': 'Prompt',
+            'ExceptionHandling': 'Async',
+            'ExpandAttributedSource': 'true',
+            'FavorSizeOrSpeed': 'Neither',
+            'FloatingPointExceptions': 'true',
+            'FloatingPointModel': 'Strict',
+            'ForceConformanceInForLoopScope': 'true',
+            'ForcedIncludeFiles': 'file1;file2;file3',
+            'ForcedUsingFiles': 'file1;file2;file3',
+            'FunctionLevelLinking': 'true',
+            'GenerateXMLDocumentationFiles': 'true',
+            'IgnoreStandardIncludePath': 'true',
+            'InlineFunctionExpansion': 'AnySuitable',
+            'IntrinsicFunctions': 'true',
+            'MinimalRebuild': 'true',
+            'ObjectFileName': 'a_file_name',
+            'OmitDefaultLibName': 'true',
+            'OmitFramePointers': 'true',
+            'OpenMPSupport': 'true',
+            'Optimization': 'Full',
+            'PrecompiledHeader': 'Create',
+            'PrecompiledHeaderFile': 'a_file_name',
+            'PrecompiledHeaderOutputFile': 'a_file_name',
+            'PreprocessKeepComments': 'true',
+            'PreprocessorDefinitions': 'd1;d2;d3',
+            'PreprocessSuppressLineNumbers': 'false',
+            'PreprocessToFile': 'true',
+            'ProgramDataBaseFileName': 'a_file_name',
+            'RuntimeLibrary': 'MultiThreaded',
+            'RuntimeTypeInfo': 'true',
+            'ShowIncludes': 'true',
+            'SmallerTypeCheck': 'true',
+            'StringPooling': 'true',
+            'StructMemberAlignment': '1Byte',
+            'SuppressStartupBanner': 'true',
+            'TreatWarningAsError': 'true',
+            'TreatWChar_tAsBuiltInType': 'true',
+            'UndefineAllPreprocessorDefinitions': 'true',
+            'UndefinePreprocessorDefinitions': 'd1;d2;d3',
+            'UseFullPaths': 'true',
+            'WarningLevel': 'Level2',
+            'WholeProgramOptimization': 'true',
+            'XMLDocumentationFileName': 'a_file_name'},
+        'Link': {
+            'AdditionalDependencies': 'file1;file2;file3',
+            'AdditionalLibraryDirectories': 'folder1;folder2;folder3',
+            'AdditionalManifestDependencies': 'file1;file2;file3',
+            'AdditionalOptions': 'a_string',
+            'AddModuleNamesToAssembly': 'file1;file2;file3',
+            'AllowIsolation': 'true',
+            'AssemblyDebug': '',
+            'AssemblyLinkResource': 'file1;file2;file3',
+            'BaseAddress': 'a_string',
+            'CLRImageType': 'ForceIJWImage',
+            'CLRThreadAttribute': 'STAThreadingAttribute',
+            'CLRUnmanagedCodeCheck': 'true',
+            'DataExecutionPrevention': '',
+            'DelayLoadDLLs': 'file1;file2;file3',
+            'DelaySign': 'true',
+            'Driver': 'Driver',
+            'EmbedManagedResourceFile': 'file1;file2;file3',
+            'EnableCOMDATFolding': '',
+            'EnableUAC': 'true',
+            'EntryPointSymbol': 'a_string',
+            'FixedBaseAddress': 'false',
+            'ForceSymbolReferences': 'file1;file2;file3',
+            'FunctionOrder': 'a_file_name',
+            'GenerateDebugInformation': 'true',
+            'GenerateMapFile': 'true',
+            'HeapCommitSize': 'a_string',
+            'HeapReserveSize': 'a_string',
+            'IgnoreAllDefaultLibraries': 'true',
+            'IgnoreEmbeddedIDL': 'true',
+            'IgnoreSpecificDefaultLibraries': 'file1;file2;file3',
+            'ImportLibrary': 'a_file_name',
+            'KeyContainer': 'a_file_name',
+            'KeyFile': 'a_file_name',
+            'LargeAddressAware': 'true',
+            'LinkErrorReporting': 'NoErrorReport',
+            'LinkTimeCodeGeneration': 'PGInstrument',
+            'ManifestFile': 'a_file_name',
+            'MapExports': 'true',
+            'MapFileName': 'a_file_name',
+            'MergedIDLBaseFileName': 'a_file_name',
+            'MergeSections': 'a_string',
+            'MidlCommandFile': 'a_file_name',
+            'ModuleDefinitionFile': 'a_file_name',
+            'NoEntryPoint': 'true',
+            'OptimizeReferences': '',
+            'OutputFile': 'a_file_name',
+            'PerUserRedirection': 'true',
+            'Profile': 'true',
+            'ProfileGuidedDatabase': 'a_file_name',
+            'ProgramDatabaseFile': 'a_file_name',
+            'RandomizedBaseAddress': 'false',
+            'RegisterOutput': 'true',
+            'SetChecksum': 'true',
+            'ShowProgress': 'NotSet',
+            'StackCommitSize': 'a_string',
+            'StackReserveSize': 'a_string',
+            'StripPrivateSymbols': 'a_file_name',
+            'SubSystem': 'Windows',
+            'SupportUnloadOfDelayLoadedDLL': 'true',
+            'SuppressStartupBanner': 'true',
+            'SwapRunFromCD': 'true',
+            'SwapRunFromNET': 'true',
+            'TargetMachine': 'MachineARM',
+            'TerminalServerAware': 'true',
+            'TurnOffAssemblyGeneration': 'true',
+            'TypeLibraryFile': 'a_file_name',
+            'TypeLibraryResourceID': '33',
+            'UACExecutionLevel': 'HighestAvailable',
+            'UACUIAccess': 'true',
+            'Version': 'a_string'},
+        'ResourceCompile': {
+            'AdditionalIncludeDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'Culture': '0x03eb',
+            'IgnoreStandardIncludePath': 'true',
+            'PreprocessorDefinitions': 'd1;d2;d3',
+            'ResourceOutputFileName': 'a_string',
+            'ShowProgress': 'true',
+            'SuppressStartupBanner': 'true',
+            'UndefinePreprocessorDefinitions': 'd1;d2;d3'},
+        'Midl': {
+            'AdditionalIncludeDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'CPreprocessOptions': 'a_string',
+            'DefaultCharType': 'Unsigned',
+            'DllDataFileName': 'a_file_name',
+            'EnableErrorChecks': 'All',
+            'ErrorCheckAllocations': 'true',
+            'ErrorCheckBounds': 'true',
+            'ErrorCheckEnumRange': 'true',
+            'ErrorCheckRefPointers': 'true',
+            'ErrorCheckStubData': 'true',
+            'GenerateStublessProxies': 'true',
+            'GenerateTypeLibrary': 'true',
+            'HeaderFileName': 'a_file_name',
+            'IgnoreStandardIncludePath': 'true',
+            'InterfaceIdentifierFileName': 'a_file_name',
+            'MkTypLibCompatible': 'true',
+            'OutputDirectory': 'a_string',
+            'PreprocessorDefinitions': 'd1;d2;d3',
+            'ProxyFileName': 'a_file_name',
+            'RedirectOutputAndErrors': 'a_file_name',
+            'StructMemberAlignment': '4',
+            'SuppressStartupBanner': 'true',
+            'TargetEnvironment': 'Win32',
+            'TypeLibraryName': 'a_file_name',
+            'UndefinePreprocessorDefinitions': 'd1;d2;d3',
+            'ValidateAllParameters': 'true',
+            'WarnAsError': 'true',
+            'WarningLevel': '4'},
+        'Lib': {
+            'AdditionalDependencies': 'file1;file2;file3',
+            'AdditionalLibraryDirectories': 'folder1;folder2;folder3',
+            'AdditionalOptions': 'a_string',
+            'ExportNamedFunctions': 'd1;d2;d3',
+            'ForceSymbolReferences': 'a_string',
+            'IgnoreAllDefaultLibraries': 'true',
+            'IgnoreSpecificDefaultLibraries': 'file1;file2;file3',
+            'ModuleDefinitionFile': 'a_file_name',
+            'OutputFile': 'a_file_name',
+            'SuppressStartupBanner': 'true',
+            'UseUnicodeResponseFiles': 'true'},
+        'Manifest': {
+            'AdditionalManifestFiles': 'file1;file2;file3',
+            'AdditionalOptions': 'a_string',
+            'AssemblyIdentity': 'a_string',
+            'ComponentFileName': 'a_file_name',
+            'GenerateCatalogFiles': 'true',
+            'InputResourceManifests': 'a_string',
+            'OutputManifestFile': 'a_file_name',
+            'RegistrarScriptFile': 'a_file_name',
+            'ReplacementsFile': 'a_file_name',
+            'SuppressStartupBanner': 'true',
+            'TypeLibraryFile': 'a_file_name',
+            'UpdateFileHashes': 'true',
+            'UpdateFileHashesSearchPath': 'a_file_name',
+            'VerboseOutput': 'true'},
+        'ManifestResourceCompile': {
+            'ResourceOutputFileName': 'my_name'},
+        'ProjectReference': {
+            'LinkLibraryDependencies': 'true',
+            'UseLibraryDependencyInputs': 'false'},
+        '': {
+            'EmbedManifest': 'true',
+            'GenerateManifest': 'true',
+            'IgnoreImportLibrary': 'true',
+            'LinkIncremental': 'false'}}
+    actual_msbuild_settings = MSVSSettings.ConvertToMSBuildSettings(
+        msvs_settings,
+        self.stderr)
+    self.assertEqual(expected_msbuild_settings, actual_msbuild_settings)
+    self._ExpectedWarnings([])
+
+  def testConvertToMSBuildSettings_actual(self):
+    """Tests the conversion of an actual project.
+
+    A VS2008 project with most of the options defined was created through the
+    VS2008 IDE.  It was then converted to VS2010.  The tool settings found in
+    the .vcproj and .vcxproj files were converted to the two dictionaries
+    msvs_settings and expected_msbuild_settings.
+
+    Note that for many settings, the VS2010 converter adds macros like
+    %(AdditionalIncludeDirectories) to make sure than inherited values are
+    included.  Since the Gyp projects we generate do not use inheritance,
+    we removed these macros.  They were:
+        ClCompile:
+            AdditionalIncludeDirectories:  ';%(AdditionalIncludeDirectories)'
+            AdditionalOptions:  ' %(AdditionalOptions)'
+            AdditionalUsingDirectories:  ';%(AdditionalUsingDirectories)'
+            DisableSpecificWarnings: ';%(DisableSpecificWarnings)',
+            ForcedIncludeFiles:  ';%(ForcedIncludeFiles)',
+            ForcedUsingFiles:  ';%(ForcedUsingFiles)',
+            PreprocessorDefinitions:  ';%(PreprocessorDefinitions)',
+            UndefinePreprocessorDefinitions:
+                ';%(UndefinePreprocessorDefinitions)',
+        Link:
+            AdditionalDependencies:  ';%(AdditionalDependencies)',
+            AdditionalLibraryDirectories:  ';%(AdditionalLibraryDirectories)',
+            AdditionalManifestDependencies:
+                ';%(AdditionalManifestDependencies)',
+            AdditionalOptions:  ' %(AdditionalOptions)',
+            AddModuleNamesToAssembly:  ';%(AddModuleNamesToAssembly)',
+            AssemblyLinkResource:  ';%(AssemblyLinkResource)',
+            DelayLoadDLLs:  ';%(DelayLoadDLLs)',
+            EmbedManagedResourceFile:  ';%(EmbedManagedResourceFile)',
+            ForceSymbolReferences:  ';%(ForceSymbolReferences)',
+            IgnoreSpecificDefaultLibraries:
+                ';%(IgnoreSpecificDefaultLibraries)',
+        ResourceCompile:
+            AdditionalIncludeDirectories:  ';%(AdditionalIncludeDirectories)',
+            AdditionalOptions:  ' %(AdditionalOptions)',
+            PreprocessorDefinitions:  ';%(PreprocessorDefinitions)',
+        Manifest:
+            AdditionalManifestFiles:  ';%(AdditionalManifestFiles)',
+            AdditionalOptions:  ' %(AdditionalOptions)',
+            InputResourceManifests:  ';%(InputResourceManifests)',
+    """
+    msvs_settings = {
+        'VCCLCompilerTool': {
+            'AdditionalIncludeDirectories': 'dir1',
+            'AdditionalOptions': '/more',
+            'AdditionalUsingDirectories': 'test',
+            'AssemblerListingLocation': '$(IntDir)\\a',
+            'AssemblerOutput': '1',
+            'BasicRuntimeChecks': '3',
+            'BrowseInformation': '1',
+            'BrowseInformationFile': '$(IntDir)\\e',
+            'BufferSecurityCheck': 'false',
+            'CallingConvention': '1',
+            'CompileAs': '1',
+            'DebugInformationFormat': '4',
+            'DefaultCharIsUnsigned': 'true',
+            'Detect64BitPortabilityProblems': 'true',
+            'DisableLanguageExtensions': 'true',
+            'DisableSpecificWarnings': 'abc',
+            'EnableEnhancedInstructionSet': '1',
+            'EnableFiberSafeOptimizations': 'true',
+            'EnableFunctionLevelLinking': 'true',
+            'EnableIntrinsicFunctions': 'true',
+            'EnablePREfast': 'true',
+            'ErrorReporting': '2',
+            'ExceptionHandling': '2',
+            'ExpandAttributedSource': 'true',
+            'FavorSizeOrSpeed': '2',
+            'FloatingPointExceptions': 'true',
+            'FloatingPointModel': '1',
+            'ForceConformanceInForLoopScope': 'false',
+            'ForcedIncludeFiles': 'def',
+            'ForcedUsingFiles': 'ge',
+            'GeneratePreprocessedFile': '2',
+            'GenerateXMLDocumentationFiles': 'true',
+            'IgnoreStandardIncludePath': 'true',
+            'InlineFunctionExpansion': '1',
+            'KeepComments': 'true',
+            'MinimalRebuild': 'true',
+            'ObjectFile': '$(IntDir)\\b',
+            'OmitDefaultLibName': 'true',
+            'OmitFramePointers': 'true',
+            'OpenMP': 'true',
+            'Optimization': '3',
+            'PrecompiledHeaderFile': '$(IntDir)\\$(TargetName).pche',
+            'PrecompiledHeaderThrough': 'StdAfx.hd',
+            'PreprocessorDefinitions': 'WIN32;_DEBUG;_CONSOLE',
+            'ProgramDataBaseFileName': '$(IntDir)\\vc90b.pdb',
+            'RuntimeLibrary': '3',
+            'RuntimeTypeInfo': 'false',
+            'ShowIncludes': 'true',
+            'SmallerTypeCheck': 'true',
+            'StringPooling': 'true',
+            'StructMemberAlignment': '3',
+            'SuppressStartupBanner': 'false',
+            'TreatWChar_tAsBuiltInType': 'false',
+            'UndefineAllPreprocessorDefinitions': 'true',
+            'UndefinePreprocessorDefinitions': 'wer',
+            'UseFullPaths': 'true',
+            'UsePrecompiledHeader': '0',
+            'UseUnicodeResponseFiles': 'false',
+            'WarnAsError': 'true',
+            'WarningLevel': '3',
+            'WholeProgramOptimization': 'true',
+            'XMLDocumentationFileName': '$(IntDir)\\c'},
+        'VCLinkerTool': {
+            'AdditionalDependencies': 'zx',
+            'AdditionalLibraryDirectories': 'asd',
+            'AdditionalManifestDependencies': 's2',
+            'AdditionalOptions': '/mor2',
+            'AddModuleNamesToAssembly': 'd1',
+            'AllowIsolation': 'false',
+            'AssemblyDebug': '1',
+            'AssemblyLinkResource': 'd5',
+            'BaseAddress': '23423',
+            'CLRImageType': '3',
+            'CLRThreadAttribute': '1',
+            'CLRUnmanagedCodeCheck': 'true',
+            'DataExecutionPrevention': '0',
+            'DelayLoadDLLs': 'd4',
+            'DelaySign': 'true',
+            'Driver': '2',
+            'EmbedManagedResourceFile': 'd2',
+            'EnableCOMDATFolding': '1',
+            'EnableUAC': 'false',
+            'EntryPointSymbol': 'f5',
+            'ErrorReporting': '2',
+            'FixedBaseAddress': '1',
+            'ForceSymbolReferences': 'd3',
+            'FunctionOrder': 'fssdfsd',
+            'GenerateDebugInformation': 'true',
+            'GenerateManifest': 'false',
+            'GenerateMapFile': 'true',
+            'HeapCommitSize': '13',
+            'HeapReserveSize': '12',
+            'IgnoreAllDefaultLibraries': 'true',
+            'IgnoreDefaultLibraryNames': 'flob;flok',
+            'IgnoreEmbeddedIDL': 'true',
+            'IgnoreImportLibrary': 'true',
+            'ImportLibrary': 'f4',
+            'KeyContainer': 'f7',
+            'KeyFile': 'f6',
+            'LargeAddressAware': '2',
+            'LinkIncremental': '0',
+            'LinkLibraryDependencies': 'false',
+            'LinkTimeCodeGeneration': '1',
+            'ManifestFile':
+            '$(IntDir)\\$(TargetFileName).2intermediate.manifest',
+            'MapExports': 'true',
+            'MapFileName': 'd5',
+            'MergedIDLBaseFileName': 'f2',
+            'MergeSections': 'f5',
+            'MidlCommandFile': 'f1',
+            'ModuleDefinitionFile': 'sdsd',
+            'OptimizeForWindows98': '2',
+            'OptimizeReferences': '2',
+            'OutputFile': '$(OutDir)\\$(ProjectName)2.exe',
+            'PerUserRedirection': 'true',
+            'Profile': 'true',
+            'ProfileGuidedDatabase': '$(TargetDir)$(TargetName).pgdd',
+            'ProgramDatabaseFile': 'Flob.pdb',
+            'RandomizedBaseAddress': '1',
+            'RegisterOutput': 'true',
+            'ResourceOnlyDLL': 'true',
+            'SetChecksum': 'false',
+            'ShowProgress': '1',
+            'StackCommitSize': '15',
+            'StackReserveSize': '14',
+            'StripPrivateSymbols': 'd3',
+            'SubSystem': '1',
+            'SupportUnloadOfDelayLoadedDLL': 'true',
+            'SuppressStartupBanner': 'false',
+            'SwapRunFromCD': 'true',
+            'SwapRunFromNet': 'true',
+            'TargetMachine': '1',
+            'TerminalServerAware': '1',
+            'TurnOffAssemblyGeneration': 'true',
+            'TypeLibraryFile': 'f3',
+            'TypeLibraryResourceID': '12',
+            'UACExecutionLevel': '2',
+            'UACUIAccess': 'true',
+            'UseLibraryDependencyInputs': 'true',
+            'UseUnicodeResponseFiles': 'false',
+            'Version': '333'},
+        'VCResourceCompilerTool': {
+            'AdditionalIncludeDirectories': 'f3',
+            'AdditionalOptions': '/more3',
+            'Culture': '3084',
+            'IgnoreStandardIncludePath': 'true',
+            'PreprocessorDefinitions': '_UNICODE;UNICODE2',
+            'ResourceOutputFileName': '$(IntDir)/$(InputName)3.res',
+            'ShowProgress': 'true'},
+        'VCManifestTool': {
+            'AdditionalManifestFiles': 'sfsdfsd',
+            'AdditionalOptions': 'afdsdafsd',
+            'AssemblyIdentity': 'sddfdsadfsa',
+            'ComponentFileName': 'fsdfds',
+            'DependencyInformationFile': '$(IntDir)\\mt.depdfd',
+            'EmbedManifest': 'false',
+            'GenerateCatalogFiles': 'true',
+            'InputResourceManifests': 'asfsfdafs',
+            'ManifestResourceFile':
+            '$(IntDir)\\$(TargetFileName).embed.manifest.resfdsf',
+            'OutputManifestFile': '$(TargetPath).manifestdfs',
+            'RegistrarScriptFile': 'sdfsfd',
+            'ReplacementsFile': 'sdffsd',
+            'SuppressStartupBanner': 'false',
+            'TypeLibraryFile': 'sfsd',
+            'UpdateFileHashes': 'true',
+            'UpdateFileHashesSearchPath': 'sfsd',
+            'UseFAT32Workaround': 'true',
+            'UseUnicodeResponseFiles': 'false',
+            'VerboseOutput': 'true'}}
+    expected_msbuild_settings = {
+        'ClCompile': {
+            'AdditionalIncludeDirectories': 'dir1',
+            'AdditionalOptions': '/more /J',
+            'AdditionalUsingDirectories': 'test',
+            'AssemblerListingLocation': '$(IntDir)a',
+            'AssemblerOutput': 'AssemblyCode',
+            'BasicRuntimeChecks': 'EnableFastChecks',
+            'BrowseInformation': 'true',
+            'BrowseInformationFile': '$(IntDir)e',
+            'BufferSecurityCheck': 'false',
+            'CallingConvention': 'FastCall',
+            'CompileAs': 'CompileAsC',
+            'DebugInformationFormat': 'EditAndContinue',
+            'DisableLanguageExtensions': 'true',
+            'DisableSpecificWarnings': 'abc',
+            'EnableEnhancedInstructionSet': 'StreamingSIMDExtensions',
+            'EnableFiberSafeOptimizations': 'true',
+            'EnablePREfast': 'true',
+            'ErrorReporting': 'Queue',
+            'ExceptionHandling': 'Async',
+            'ExpandAttributedSource': 'true',
+            'FavorSizeOrSpeed': 'Size',
+            'FloatingPointExceptions': 'true',
+            'FloatingPointModel': 'Strict',
+            'ForceConformanceInForLoopScope': 'false',
+            'ForcedIncludeFiles': 'def',
+            'ForcedUsingFiles': 'ge',
+            'FunctionLevelLinking': 'true',
+            'GenerateXMLDocumentationFiles': 'true',
+            'IgnoreStandardIncludePath': 'true',
+            'InlineFunctionExpansion': 'OnlyExplicitInline',
+            'IntrinsicFunctions': 'true',
+            'MinimalRebuild': 'true',
+            'ObjectFileName': '$(IntDir)b',
+            'OmitDefaultLibName': 'true',
+            'OmitFramePointers': 'true',
+            'OpenMPSupport': 'true',
+            'Optimization': 'Full',
+            'PrecompiledHeader': 'NotUsing',  # Actual conversion gives ''
+            'PrecompiledHeaderFile': 'StdAfx.hd',
+            'PrecompiledHeaderOutputFile': '$(IntDir)$(TargetName).pche',
+            'PreprocessKeepComments': 'true',
+            'PreprocessorDefinitions': 'WIN32;_DEBUG;_CONSOLE',
+            'PreprocessSuppressLineNumbers': 'true',
+            'PreprocessToFile': 'true',
+            'ProgramDataBaseFileName': '$(IntDir)vc90b.pdb',
+            'RuntimeLibrary': 'MultiThreadedDebugDLL',
+            'RuntimeTypeInfo': 'false',
+            'ShowIncludes': 'true',
+            'SmallerTypeCheck': 'true',
+            'StringPooling': 'true',
+            'StructMemberAlignment': '4Bytes',
+            'SuppressStartupBanner': 'false',
+            'TreatWarningAsError': 'true',
+            'TreatWChar_tAsBuiltInType': 'false',
+            'UndefineAllPreprocessorDefinitions': 'true',
+            'UndefinePreprocessorDefinitions': 'wer',
+            'UseFullPaths': 'true',
+            'WarningLevel': 'Level3',
+            'WholeProgramOptimization': 'true',
+            'XMLDocumentationFileName': '$(IntDir)c'},
+        'Link': {
+            'AdditionalDependencies': 'zx',
+            'AdditionalLibraryDirectories': 'asd',
+            'AdditionalManifestDependencies': 's2',
+            'AdditionalOptions': '/mor2',
+            'AddModuleNamesToAssembly': 'd1',
+            'AllowIsolation': 'false',
+            'AssemblyDebug': 'true',
+            'AssemblyLinkResource': 'd5',
+            'BaseAddress': '23423',
+            'CLRImageType': 'ForceSafeILImage',
+            'CLRThreadAttribute': 'MTAThreadingAttribute',
+            'CLRUnmanagedCodeCheck': 'true',
+            'DataExecutionPrevention': '',
+            'DelayLoadDLLs': 'd4',
+            'DelaySign': 'true',
+            'Driver': 'UpOnly',
+            'EmbedManagedResourceFile': 'd2',
+            'EnableCOMDATFolding': 'false',
+            'EnableUAC': 'false',
+            'EntryPointSymbol': 'f5',
+            'FixedBaseAddress': 'false',
+            'ForceSymbolReferences': 'd3',
+            'FunctionOrder': 'fssdfsd',
+            'GenerateDebugInformation': 'true',
+            'GenerateMapFile': 'true',
+            'HeapCommitSize': '13',
+            'HeapReserveSize': '12',
+            'IgnoreAllDefaultLibraries': 'true',
+            'IgnoreEmbeddedIDL': 'true',
+            'IgnoreSpecificDefaultLibraries': 'flob;flok',
+            'ImportLibrary': 'f4',
+            'KeyContainer': 'f7',
+            'KeyFile': 'f6',
+            'LargeAddressAware': 'true',
+            'LinkErrorReporting': 'QueueForNextLogin',
+            'LinkTimeCodeGeneration': 'UseLinkTimeCodeGeneration',
+            'ManifestFile': '$(IntDir)$(TargetFileName).2intermediate.manifest',
+            'MapExports': 'true',
+            'MapFileName': 'd5',
+            'MergedIDLBaseFileName': 'f2',
+            'MergeSections': 'f5',
+            'MidlCommandFile': 'f1',
+            'ModuleDefinitionFile': 'sdsd',
+            'NoEntryPoint': 'true',
+            'OptimizeReferences': 'true',
+            'OutputFile': '$(OutDir)$(ProjectName)2.exe',
+            'PerUserRedirection': 'true',
+            'Profile': 'true',
+            'ProfileGuidedDatabase': '$(TargetDir)$(TargetName).pgdd',
+            'ProgramDatabaseFile': 'Flob.pdb',
+            'RandomizedBaseAddress': 'false',
+            'RegisterOutput': 'true',
+            'SetChecksum': 'false',
+            'ShowProgress': 'LinkVerbose',
+            'StackCommitSize': '15',
+            'StackReserveSize': '14',
+            'StripPrivateSymbols': 'd3',
+            'SubSystem': 'Console',
+            'SupportUnloadOfDelayLoadedDLL': 'true',
+            'SuppressStartupBanner': 'false',
+            'SwapRunFromCD': 'true',
+            'SwapRunFromNET': 'true',
+            'TargetMachine': 'MachineX86',
+            'TerminalServerAware': 'false',
+            'TurnOffAssemblyGeneration': 'true',
+            'TypeLibraryFile': 'f3',
+            'TypeLibraryResourceID': '12',
+            'UACExecutionLevel': 'RequireAdministrator',
+            'UACUIAccess': 'true',
+            'Version': '333'},
+        'ResourceCompile': {
+            'AdditionalIncludeDirectories': 'f3',
+            'AdditionalOptions': '/more3',
+            'Culture': '0x0c0c',
+            'IgnoreStandardIncludePath': 'true',
+            'PreprocessorDefinitions': '_UNICODE;UNICODE2',
+            'ResourceOutputFileName': '$(IntDir)%(Filename)3.res',
+            'ShowProgress': 'true'},
+        'Manifest': {
+            'AdditionalManifestFiles': 'sfsdfsd',
+            'AdditionalOptions': 'afdsdafsd',
+            'AssemblyIdentity': 'sddfdsadfsa',
+            'ComponentFileName': 'fsdfds',
+            'GenerateCatalogFiles': 'true',
+            'InputResourceManifests': 'asfsfdafs',
+            'OutputManifestFile': '$(TargetPath).manifestdfs',
+            'RegistrarScriptFile': 'sdfsfd',
+            'ReplacementsFile': 'sdffsd',
+            'SuppressStartupBanner': 'false',
+            'TypeLibraryFile': 'sfsd',
+            'UpdateFileHashes': 'true',
+            'UpdateFileHashesSearchPath': 'sfsd',
+            'VerboseOutput': 'true'},
+        'ProjectReference': {
+            'LinkLibraryDependencies': 'false',
+            'UseLibraryDependencyInputs': 'true'},
+        '': {
+            'EmbedManifest': 'false',
+            'GenerateManifest': 'false',
+            'IgnoreImportLibrary': 'true',
+            'LinkIncremental': ''
+            },
+        'ManifestResourceCompile': {
+            'ResourceOutputFileName':
+            '$(IntDir)$(TargetFileName).embed.manifest.resfdsf'}
+        }
+    actual_msbuild_settings = MSVSSettings.ConvertToMSBuildSettings(
+        msvs_settings,
+        self.stderr)
+    self.assertEqual(expected_msbuild_settings, actual_msbuild_settings)
+    self._ExpectedWarnings([])
+
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/MSVSToolFile.py b/deps/gyp/pylib/gyp/MSVSToolFile.py
new file mode 100644
index 0000000000..74e529a17f
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSToolFile.py
@@ -0,0 +1,58 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Visual Studio project reader/writer."""
+
+import gyp.common
+import gyp.easy_xml as easy_xml
+
+
+class Writer(object):
+  """Visual Studio XML tool file writer."""
+
+  def __init__(self, tool_file_path, name):
+    """Initializes the tool file.
+
+    Args:
+      tool_file_path: Path to the tool file.
+      name: Name of the tool file.
+    """
+    self.tool_file_path = tool_file_path
+    self.name = name
+    self.rules_section = ['Rules']
+
+  def AddCustomBuildRule(self, name, cmd, description,
+                         additional_dependencies,
+                         outputs, extensions):
+    """Adds a rule to the tool file.
+
+    Args:
+      name: Name of the rule.
+      description: Description of the rule.
+      cmd: Command line of the rule.
+      additional_dependencies: other files which may trigger the rule.
+      outputs: outputs of the rule.
+      extensions: extensions handled by the rule.
+    """
+    rule = ['CustomBuildRule',
+            {'Name': name,
+             'ExecutionDescription': description,
+             'CommandLine': cmd,
+             'Outputs': ';'.join(outputs),
+             'FileExtensions': ';'.join(extensions),
+             'AdditionalDependencies':
+                 ';'.join(additional_dependencies)
+            }]
+    self.rules_section.append(rule)
+
+  def WriteIfChanged(self):
+    """Writes the tool file."""
+    content = ['VisualStudioToolFile',
+               {'Version': '8.00',
+                'Name': self.name
+               },
+               self.rules_section
+               ]
+    easy_xml.WriteXmlIfChanged(content, self.tool_file_path,
+                               encoding="Windows-1252")
diff --git a/deps/gyp/pylib/gyp/MSVSUserFile.py b/deps/gyp/pylib/gyp/MSVSUserFile.py
new file mode 100644
index 0000000000..6c07e9a893
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSUserFile.py
@@ -0,0 +1,147 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Visual Studio user preferences file writer."""
+
+import os
+import re
+import socket # for gethostname
+
+import gyp.common
+import gyp.easy_xml as easy_xml
+
+
+#------------------------------------------------------------------------------
+
+def _FindCommandInPath(command):
+  """If there are no slashes in the command given, this function
+     searches the PATH env to find the given command, and converts it
+     to an absolute path.  We have to do this because MSVS is looking
+     for an actual file to launch a debugger on, not just a command
+     line.  Note that this happens at GYP time, so anything needing to
+     be built needs to have a full path."""
+  if '/' in command or '\\' in command:
+    # If the command already has path elements (either relative or
+    # absolute), then assume it is constructed properly.
+    return command
+  else:
+    # Search through the path list and find an existing file that
+    # we can access.
+    paths = os.environ.get('PATH','').split(os.pathsep)
+    for path in paths:
+      item = os.path.join(path, command)
+      if os.path.isfile(item) and os.access(item, os.X_OK):
+        return item
+  return command
+
+def _QuoteWin32CommandLineArgs(args):
+  new_args = []
+  for arg in args:
+    # Replace all double-quotes with double-double-quotes to escape
+    # them for cmd shell, and then quote the whole thing if there
+    # are any.
+    if arg.find('"') != -1:
+      arg = '""'.join(arg.split('"'))
+      arg = '"%s"' % arg
+
+    # Otherwise, if there are any spaces, quote the whole arg.
+    elif re.search(r'[ \t\n]', arg):
+      arg = '"%s"' % arg
+    new_args.append(arg)
+  return new_args
+
+class Writer(object):
+  """Visual Studio XML user user file writer."""
+
+  def __init__(self, user_file_path, version, name):
+    """Initializes the user file.
+
+    Args:
+      user_file_path: Path to the user file.
+      version: Version info.
+      name: Name of the user file.
+    """
+    self.user_file_path = user_file_path
+    self.version = version
+    self.name = name
+    self.configurations = {}
+
+  def AddConfig(self, name):
+    """Adds a configuration to the project.
+
+    Args:
+      name: Configuration name.
+    """
+    self.configurations[name] = ['Configuration', {'Name': name}]
+
+  def AddDebugSettings(self, config_name, command, environment = {},
+                       working_directory=""):
+    """Adds a DebugSettings node to the user file for a particular config.
+
+    Args:
+      command: command line to run.  First element in the list is the
+        executable.  All elements of the command will be quoted if
+        necessary.
+      working_directory: other files which may trigger the rule. (optional)
+    """
+    command = _QuoteWin32CommandLineArgs(command)
+
+    abs_command = _FindCommandInPath(command[0])
+
+    if environment and isinstance(environment, dict):
+      env_list = ['%s="%s"' % (key, val)
+                  for (key,val) in environment.iteritems()]
+      environment = ' '.join(env_list)
+    else:
+      environment = ''
+
+    n_cmd = ['DebugSettings',
+             {'Command': abs_command,
+              'WorkingDirectory': working_directory,
+              'CommandArguments': " ".join(command[1:]),
+              'RemoteMachine': socket.gethostname(),
+              'Environment': environment,
+              'EnvironmentMerge': 'true',
+              # Currently these are all "dummy" values that we're just setting
+              # in the default manner that MSVS does it.  We could use some of
+              # these to add additional capabilities, I suppose, but they might
+              # not have parity with other platforms then.
+              'Attach': 'false',
+              'DebuggerType': '3',  # 'auto' debugger
+              'Remote': '1',
+              'RemoteCommand': '',
+              'HttpUrl': '',
+              'PDBPath': '',
+              'SQLDebugging': '',
+              'DebuggerFlavor': '0',
+              'MPIRunCommand': '',
+              'MPIRunArguments': '',
+              'MPIRunWorkingDirectory': '',
+              'ApplicationCommand': '',
+              'ApplicationArguments': '',
+              'ShimCommand': '',
+              'MPIAcceptMode': '',
+              'MPIAcceptFilter': ''
+             }]
+
+    # Find the config, and add it if it doesn't exist.
+    if config_name not in self.configurations:
+      self.AddConfig(config_name)
+
+    # Add the DebugSettings onto the appropriate config.
+    self.configurations[config_name].append(n_cmd)
+
+  def WriteIfChanged(self):
+    """Writes the user file."""
+    configs = ['Configurations']
+    for config, spec in sorted(self.configurations.iteritems()):
+      configs.append(spec)
+
+    content = ['VisualStudioUserFile',
+               {'Version': self.version.ProjectVersion(),
+                'Name': self.name
+               },
+               configs]
+    easy_xml.WriteXmlIfChanged(content, self.user_file_path,
+                               encoding="Windows-1252")
diff --git a/deps/gyp/pylib/gyp/MSVSUtil.py b/deps/gyp/pylib/gyp/MSVSUtil.py
new file mode 100644
index 0000000000..62e8d260d4
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSUtil.py
@@ -0,0 +1,267 @@
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Utility functions shared amongst the Windows generators."""
+
+import copy
+import os
+
+
+_TARGET_TYPE_EXT = {
+  'executable': '.exe',
+  'loadable_module': '.dll',
+  'shared_library': '.dll',
+}
+
+
+def _GetLargePdbShimCcPath():
+  """Returns the path of the large_pdb_shim.cc file."""
+  this_dir = os.path.abspath(os.path.dirname(__file__))
+  src_dir = os.path.abspath(os.path.join(this_dir, '..', '..'))
+  win_data_dir = os.path.join(src_dir, 'data', 'win')
+  large_pdb_shim_cc = os.path.join(win_data_dir, 'large-pdb-shim.cc')
+  return large_pdb_shim_cc
+
+
+def _DeepCopySomeKeys(in_dict, keys):
+  """Performs a partial deep-copy on |in_dict|, only copying the keys in |keys|.
+
+  Arguments:
+    in_dict: The dictionary to copy.
+    keys: The keys to be copied. If a key is in this list and doesn't exist in
+        |in_dict| this is not an error.
+  Returns:
+    The partially deep-copied dictionary.
+  """
+  d = {}
+  for key in keys:
+    if key not in in_dict:
+      continue
+    d[key] = copy.deepcopy(in_dict[key])
+  return d
+
+
+def _SuffixName(name, suffix):
+  """Add a suffix to the end of a target.
+
+  Arguments:
+    name: name of the target (foo#target)
+    suffix: the suffix to be added
+  Returns:
+    Target name with suffix added (foo_suffix#target)
+  """
+  parts = name.rsplit('#', 1)
+  parts[0] = '%s_%s' % (parts[0], suffix)
+  return '#'.join(parts)
+
+
+def _ShardName(name, number):
+  """Add a shard number to the end of a target.
+
+  Arguments:
+    name: name of the target (foo#target)
+    number: shard number
+  Returns:
+    Target name with shard added (foo_1#target)
+  """
+  return _SuffixName(name, str(number))
+
+
+def ShardTargets(target_list, target_dicts):
+  """Shard some targets apart to work around the linkers limits.
+
+  Arguments:
+    target_list: List of target pairs: 'base/base.gyp:base'.
+    target_dicts: Dict of target properties keyed on target pair.
+  Returns:
+    Tuple of the new sharded versions of the inputs.
+  """
+  # Gather the targets to shard, and how many pieces.
+  targets_to_shard = {}
+  for t in target_dicts:
+    shards = int(target_dicts[t].get('msvs_shard', 0))
+    if shards:
+      targets_to_shard[t] = shards
+  # Shard target_list.
+  new_target_list = []
+  for t in target_list:
+    if t in targets_to_shard:
+      for i in range(targets_to_shard[t]):
+        new_target_list.append(_ShardName(t, i))
+    else:
+      new_target_list.append(t)
+  # Shard target_dict.
+  new_target_dicts = {}
+  for t in target_dicts:
+    if t in targets_to_shard:
+      for i in range(targets_to_shard[t]):
+        name = _ShardName(t, i)
+        new_target_dicts[name] = copy.copy(target_dicts[t])
+        new_target_dicts[name]['target_name'] = _ShardName(
+             new_target_dicts[name]['target_name'], i)
+        sources = new_target_dicts[name].get('sources', [])
+        new_sources = []
+        for pos in range(i, len(sources), targets_to_shard[t]):
+          new_sources.append(sources[pos])
+        new_target_dicts[name]['sources'] = new_sources
+    else:
+      new_target_dicts[t] = target_dicts[t]
+  # Shard dependencies.
+  for t in new_target_dicts:
+    dependencies = copy.copy(new_target_dicts[t].get('dependencies', []))
+    new_dependencies = []
+    for d in dependencies:
+      if d in targets_to_shard:
+        for i in range(targets_to_shard[d]):
+          new_dependencies.append(_ShardName(d, i))
+      else:
+        new_dependencies.append(d)
+    new_target_dicts[t]['dependencies'] = new_dependencies
+
+  return (new_target_list, new_target_dicts)
+
+
+def _GetPdbPath(target_dict, config_name, vars):
+  """Returns the path to the PDB file that will be generated by a given
+  configuration.
+
+  The lookup proceeds as follows:
+    - Look for an explicit path in the VCLinkerTool configuration block.
+    - Look for an 'msvs_large_pdb_path' variable.
+    - Use '<(PRODUCT_DIR)/<(product_name).(exe|dll).pdb' if 'product_name' is
+      specified.
+    - Use '<(PRODUCT_DIR)/<(target_name).(exe|dll).pdb'.
+
+  Arguments:
+    target_dict: The target dictionary to be searched.
+    config_name: The name of the configuration of interest.
+    vars: A dictionary of common GYP variables with generator-specific values.
+  Returns:
+    The path of the corresponding PDB file.
+  """
+  config = target_dict['configurations'][config_name]
+  msvs = config.setdefault('msvs_settings', {})
+
+  linker = msvs.get('VCLinkerTool', {})
+
+  pdb_path = linker.get('ProgramDatabaseFile')
+  if pdb_path:
+    return pdb_path
+
+  variables = target_dict.get('variables', {})
+  pdb_path = variables.get('msvs_large_pdb_path', None)
+  if pdb_path:
+    return pdb_path
+
+
+  pdb_base = target_dict.get('product_name', target_dict['target_name'])
+  pdb_base = '%s%s.pdb' % (pdb_base, _TARGET_TYPE_EXT[target_dict['type']])
+  pdb_path = vars['PRODUCT_DIR'] + '/' + pdb_base
+
+  return pdb_path
+
+
+def InsertLargePdbShims(target_list, target_dicts, vars):
+  """Insert a shim target that forces the linker to use 4KB pagesize PDBs.
+
+  This is a workaround for targets with PDBs greater than 1GB in size, the
+  limit for the 1KB pagesize PDBs created by the linker by default.
+
+  Arguments:
+    target_list: List of target pairs: 'base/base.gyp:base'.
+    target_dicts: Dict of target properties keyed on target pair.
+    vars: A dictionary of common GYP variables with generator-specific values.
+  Returns:
+    Tuple of the shimmed version of the inputs.
+  """
+  # Determine which targets need shimming.
+  targets_to_shim = []
+  for t in target_dicts:
+    target_dict = target_dicts[t]
+
+    # We only want to shim targets that have msvs_large_pdb enabled.
+    if not int(target_dict.get('msvs_large_pdb', 0)):
+      continue
+    # This is intended for executable, shared_library and loadable_module
+    # targets where every configuration is set up to produce a PDB output.
+    # If any of these conditions is not true then the shim logic will fail
+    # below.
+    targets_to_shim.append(t)
+
+  large_pdb_shim_cc = _GetLargePdbShimCcPath()
+
+  for t in targets_to_shim:
+    target_dict = target_dicts[t]
+    target_name = target_dict.get('target_name')
+
+    base_dict = _DeepCopySomeKeys(target_dict,
+          ['configurations', 'default_configuration', 'toolset'])
+
+    # This is the dict for copying the source file (part of the GYP tree)
+    # to the intermediate directory of the project. This is necessary because
+    # we can't always build a relative path to the shim source file (on Windows
+    # GYP and the project may be on different drives), and Ninja hates absolute
+    # paths (it ends up generating the .obj and .obj.d alongside the source
+    # file, polluting GYPs tree).
+    copy_suffix = 'large_pdb_copy'
+    copy_target_name = target_name + '_' + copy_suffix
+    full_copy_target_name = _SuffixName(t, copy_suffix)
+    shim_cc_basename = os.path.basename(large_pdb_shim_cc)
+    shim_cc_dir = vars['SHARED_INTERMEDIATE_DIR'] + '/' + copy_target_name
+    shim_cc_path = shim_cc_dir + '/' + shim_cc_basename
+    copy_dict = copy.deepcopy(base_dict)
+    copy_dict['target_name'] = copy_target_name
+    copy_dict['type'] = 'none'
+    copy_dict['sources'] = [ large_pdb_shim_cc ]
+    copy_dict['copies'] = [{
+      'destination': shim_cc_dir,
+      'files': [ large_pdb_shim_cc ]
+    }]
+
+    # This is the dict for the PDB generating shim target. It depends on the
+    # copy target.
+    shim_suffix = 'large_pdb_shim'
+    shim_target_name = target_name + '_' + shim_suffix
+    full_shim_target_name = _SuffixName(t, shim_suffix)
+    shim_dict = copy.deepcopy(base_dict)
+    shim_dict['target_name'] = shim_target_name
+    shim_dict['type'] = 'static_library'
+    shim_dict['sources'] = [ shim_cc_path ]
+    shim_dict['dependencies'] = [ full_copy_target_name ]
+
+    # Set up the shim to output its PDB to the same location as the final linker
+    # target.
+    for config_name, config in shim_dict.get('configurations').iteritems():
+      pdb_path = _GetPdbPath(target_dict, config_name, vars)
+
+      # A few keys that we don't want to propagate.
+      for key in ['msvs_precompiled_header', 'msvs_precompiled_source', 'test']:
+        config.pop(key, None)
+
+      msvs = config.setdefault('msvs_settings', {})
+
+      # Update the compiler directives in the shim target.
+      compiler = msvs.setdefault('VCCLCompilerTool', {})
+      compiler['DebugInformationFormat'] = '3'
+      compiler['ProgramDataBaseFileName'] = pdb_path
+
+      # Set the explicit PDB path in the appropriate configuration of the
+      # original target.
+      config = target_dict['configurations'][config_name]
+      msvs = config.setdefault('msvs_settings', {})
+      linker = msvs.setdefault('VCLinkerTool', {})
+      linker['GenerateDebugInformation'] = 'true'
+      linker['ProgramDatabaseFile'] = pdb_path
+
+    # Add the new targets. They must go to the beginning of the list so that
+    # the dependency generation works as expected in ninja.
+    target_list.insert(0, full_copy_target_name)
+    target_list.insert(0, full_shim_target_name)
+    target_dicts[full_copy_target_name] = copy_dict
+    target_dicts[full_shim_target_name] = shim_dict
+
+    # Update the original target to depend on the shim target.
+    target_dict.setdefault('dependencies', []).append(full_shim_target_name)
+
+  return (target_list, target_dicts)
\ No newline at end of file
diff --git a/deps/gyp/pylib/gyp/MSVSVersion.py b/deps/gyp/pylib/gyp/MSVSVersion.py
new file mode 100644
index 0000000000..03b6d8ad42
--- /dev/null
+++ b/deps/gyp/pylib/gyp/MSVSVersion.py
@@ -0,0 +1,409 @@
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Handle version information related to Visual Stuio."""
+
+import errno
+import os
+import re
+import subprocess
+import sys
+import gyp
+import glob
+
+
+class VisualStudioVersion(object):
+  """Information regarding a version of Visual Studio."""
+
+  def __init__(self, short_name, description,
+               solution_version, project_version, flat_sln, uses_vcxproj,
+               path, sdk_based, default_toolset=None):
+    self.short_name = short_name
+    self.description = description
+    self.solution_version = solution_version
+    self.project_version = project_version
+    self.flat_sln = flat_sln
+    self.uses_vcxproj = uses_vcxproj
+    self.path = path
+    self.sdk_based = sdk_based
+    self.default_toolset = default_toolset
+
+  def ShortName(self):
+    return self.short_name
+
+  def Description(self):
+    """Get the full description of the version."""
+    return self.description
+
+  def SolutionVersion(self):
+    """Get the version number of the sln files."""
+    return self.solution_version
+
+  def ProjectVersion(self):
+    """Get the version number of the vcproj or vcxproj files."""
+    return self.project_version
+
+  def FlatSolution(self):
+    return self.flat_sln
+
+  def UsesVcxproj(self):
+    """Returns true if this version uses a vcxproj file."""
+    return self.uses_vcxproj
+
+  def ProjectExtension(self):
+    """Returns the file extension for the project."""
+    return self.uses_vcxproj and '.vcxproj' or '.vcproj'
+
+  def Path(self):
+    """Returns the path to Visual Studio installation."""
+    return self.path
+
+  def ToolPath(self, tool):
+    """Returns the path to a given compiler tool. """
+    return os.path.normpath(os.path.join(self.path, "VC/bin", tool))
+
+  def DefaultToolset(self):
+    """Returns the msbuild toolset version that will be used in the absence
+    of a user override."""
+    return self.default_toolset
+
+  def SetupScript(self, target_arch):
+    """Returns a command (with arguments) to be used to set up the
+    environment."""
+    # Check if we are running in the SDK command line environment and use
+    # the setup script from the SDK if so. |target_arch| should be either
+    # 'x86' or 'x64'.
+    assert target_arch in ('x86', 'x64')
+    sdk_dir = os.environ.get('WindowsSDKDir')
+    if self.sdk_based and sdk_dir:
+      return [os.path.normpath(os.path.join(sdk_dir, 'Bin/SetEnv.Cmd')),
+              '/' + target_arch]
+    else:
+      # We don't use VC/vcvarsall.bat for x86 because vcvarsall calls
+      # vcvars32, which it can only find if VS??COMNTOOLS is set, which it
+      # isn't always.
+      if target_arch == 'x86':
+        if self.short_name == '2013' and (
+            os.environ.get('PROCESSOR_ARCHITECTURE') == 'AMD64' or
+            os.environ.get('PROCESSOR_ARCHITEW6432') == 'AMD64'):
+          # VS2013 non-Express has a x64-x86 cross that we want to prefer.
+          return [os.path.normpath(
+             os.path.join(self.path, 'VC/vcvarsall.bat')), 'amd64_x86']
+        # Otherwise, the standard x86 compiler.
+        return [os.path.normpath(
+          os.path.join(self.path, 'Common7/Tools/vsvars32.bat'))]
+      else:
+        assert target_arch == 'x64'
+        arg = 'x86_amd64'
+        # Use the 64-on-64 compiler if we're not using an express
+        # edition and we're running on a 64bit OS.
+        if self.short_name[-1] != 'e' and (
+            os.environ.get('PROCESSOR_ARCHITECTURE') == 'AMD64' or
+            os.environ.get('PROCESSOR_ARCHITEW6432') == 'AMD64'):
+          arg = 'amd64'
+        return [os.path.normpath(
+            os.path.join(self.path, 'VC/vcvarsall.bat')), arg]
+
+
+def _RegistryQueryBase(sysdir, key, value):
+  """Use reg.exe to read a particular key.
+
+  While ideally we might use the win32 module, we would like gyp to be
+  python neutral, so for instance cygwin python lacks this module.
+
+  Arguments:
+    sysdir: The system subdirectory to attempt to launch reg.exe from.
+    key: The registry key to read from.
+    value: The particular value to read.
+  Return:
+    stdout from reg.exe, or None for failure.
+  """
+  # Skip if not on Windows or Python Win32 setup issue
+  if sys.platform not in ('win32', 'cygwin'):
+    return None
+  # Setup params to pass to and attempt to launch reg.exe
+  cmd = [os.path.join(os.environ.get('WINDIR', ''), sysdir, 'reg.exe'),
+         'query', key]
+  if value:
+    cmd.extend(['/v', value])
+  p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+  # Obtain the stdout from reg.exe, reading to the end so p.returncode is valid
+  # Note that the error text may be in [1] in some cases
+  text = p.communicate()[0]
+  # Check return code from reg.exe; officially 0==success and 1==error
+  if p.returncode:
+    return None
+  return text
+
+
+def _RegistryQuery(key, value=None):
+  """Use reg.exe to read a particular key through _RegistryQueryBase.
+
+  First tries to launch from %WinDir%\Sysnative to avoid WoW64 redirection. If
+  that fails, it falls back to System32.  Sysnative is available on Vista and
+  up and available on Windows Server 2003 and XP through KB patch 942589. Note
+  that Sysnative will always fail if using 64-bit python due to it being a
+  virtual directory and System32 will work correctly in the first place.
+
+  KB 942589 - http://support.microsoft.com/kb/942589/en-us.
+
+  Arguments:
+    key: The registry key.
+    value: The particular registry value to read (optional).
+  Return:
+    stdout from reg.exe, or None for failure.
+  """
+  text = None
+  try:
+    text = _RegistryQueryBase('Sysnative', key, value)
+  except OSError, e:
+    if e.errno == errno.ENOENT:
+      text = _RegistryQueryBase('System32', key, value)
+    else:
+      raise
+  return text
+
+
+def _RegistryGetValue(key, value):
+  """Use reg.exe to obtain the value of a registry key.
+
+  Args:
+    key: The registry key.
+    value: The particular registry value to read.
+  Return:
+    contents of the registry key's value, or None on failure.
+  """
+  text = _RegistryQuery(key, value)
+  if not text:
+    return None
+  # Extract value.
+  match = re.search(r'REG_\w+\s+([^\r]+)\r\n', text)
+  if not match:
+    return None
+  return match.group(1)
+
+
+def _RegistryKeyExists(key):
+  """Use reg.exe to see if a key exists.
+
+  Args:
+    key: The registry key to check.
+  Return:
+    True if the key exists
+  """
+  if not _RegistryQuery(key):
+    return False
+  return True
+
+
+def _CreateVersion(name, path, sdk_based=False):
+  """Sets up MSVS project generation.
+
+  Setup is based off the GYP_MSVS_VERSION environment variable or whatever is
+  autodetected if GYP_MSVS_VERSION is not explicitly specified. If a version is
+  passed in that doesn't match a value in versions python will throw a error.
+  """
+  if path:
+    path = os.path.normpath(path)
+  versions = {
+      '2013': VisualStudioVersion('2013',
+                                  'Visual Studio 2013',
+                                  solution_version='13.00',
+                                  project_version='12.0',
+                                  flat_sln=False,
+                                  uses_vcxproj=True,
+                                  path=path,
+                                  sdk_based=sdk_based,
+                                  default_toolset='v120'),
+      '2013e': VisualStudioVersion('2013e',
+                                   'Visual Studio 2013',
+                                   solution_version='13.00',
+                                   project_version='12.0',
+                                   flat_sln=True,
+                                   uses_vcxproj=True,
+                                   path=path,
+                                   sdk_based=sdk_based,
+                                   default_toolset='v120'),
+      '2012': VisualStudioVersion('2012',
+                                  'Visual Studio 2012',
+                                  solution_version='12.00',
+                                  project_version='4.0',
+                                  flat_sln=False,
+                                  uses_vcxproj=True,
+                                  path=path,
+                                  sdk_based=sdk_based,
+                                  default_toolset='v110'),
+      '2012e': VisualStudioVersion('2012e',
+                                   'Visual Studio 2012',
+                                   solution_version='12.00',
+                                   project_version='4.0',
+                                   flat_sln=True,
+                                   uses_vcxproj=True,
+                                   path=path,
+                                   sdk_based=sdk_based,
+                                   default_toolset='v110'),
+      '2010': VisualStudioVersion('2010',
+                                  'Visual Studio 2010',
+                                  solution_version='11.00',
+                                  project_version='4.0',
+                                  flat_sln=False,
+                                  uses_vcxproj=True,
+                                  path=path,
+                                  sdk_based=sdk_based),
+      '2010e': VisualStudioVersion('2010e',
+                                   'Visual C++ Express 2010',
+                                   solution_version='11.00',
+                                   project_version='4.0',
+                                   flat_sln=True,
+                                   uses_vcxproj=True,
+                                   path=path,
+                                   sdk_based=sdk_based),
+      '2008': VisualStudioVersion('2008',
+                                  'Visual Studio 2008',
+                                  solution_version='10.00',
+                                  project_version='9.00',
+                                  flat_sln=False,
+                                  uses_vcxproj=False,
+                                  path=path,
+                                  sdk_based=sdk_based),
+      '2008e': VisualStudioVersion('2008e',
+                                   'Visual Studio 2008',
+                                   solution_version='10.00',
+                                   project_version='9.00',
+                                   flat_sln=True,
+                                   uses_vcxproj=False,
+                                   path=path,
+                                   sdk_based=sdk_based),
+      '2005': VisualStudioVersion('2005',
+                                  'Visual Studio 2005',
+                                  solution_version='9.00',
+                                  project_version='8.00',
+                                  flat_sln=False,
+                                  uses_vcxproj=False,
+                                  path=path,
+                                  sdk_based=sdk_based),
+      '2005e': VisualStudioVersion('2005e',
+                                   'Visual Studio 2005',
+                                   solution_version='9.00',
+                                   project_version='8.00',
+                                   flat_sln=True,
+                                   uses_vcxproj=False,
+                                   path=path,
+                                   sdk_based=sdk_based),
+  }
+  return versions[str(name)]
+
+
+def _ConvertToCygpath(path):
+  """Convert to cygwin path if we are using cygwin."""
+  if sys.platform == 'cygwin':
+    p = subprocess.Popen(['cygpath', path], stdout=subprocess.PIPE)
+    path = p.communicate()[0].strip()
+  return path
+
+
+def _DetectVisualStudioVersions(versions_to_check, force_express):
+  """Collect the list of installed visual studio versions.
+
+  Returns:
+    A list of visual studio versions installed in descending order of
+    usage preference.
+    Base this on the registry and a quick check if devenv.exe exists.
+    Only versions 8-10 are considered.
+    Possibilities are:
+      2005(e) - Visual Studio 2005 (8)
+      2008(e) - Visual Studio 2008 (9)
+      2010(e) - Visual Studio 2010 (10)
+      2012(e) - Visual Studio 2012 (11)
+      2013(e) - Visual Studio 2013 (11)
+    Where (e) is e for express editions of MSVS and blank otherwise.
+  """
+  version_to_year = {
+      '8.0': '2005',
+      '9.0': '2008',
+      '10.0': '2010',
+      '11.0': '2012',
+      '12.0': '2013',
+  }
+  versions = []
+  for version in versions_to_check:
+    # Old method of searching for which VS version is installed
+    # We don't use the 2010-encouraged-way because we also want to get the
+    # path to the binaries, which it doesn't offer.
+    keys = [r'HKLM\Software\Microsoft\VisualStudio\%s' % version,
+            r'HKLM\Software\Wow6432Node\Microsoft\VisualStudio\%s' % version,
+            r'HKLM\Software\Microsoft\VCExpress\%s' % version,
+            r'HKLM\Software\Wow6432Node\Microsoft\VCExpress\%s' % version]
+    for index in range(len(keys)):
+      path = _RegistryGetValue(keys[index], 'InstallDir')
+      if not path:
+        continue
+      path = _ConvertToCygpath(path)
+      # Check for full.
+      full_path = os.path.join(path, 'devenv.exe')
+      express_path = os.path.join(path, '*express.exe')
+      if not force_express and os.path.exists(full_path):
+        # Add this one.
+        versions.append(_CreateVersion(version_to_year[version],
+            os.path.join(path, '..', '..')))
+      # Check for express.
+      elif glob.glob(express_path):
+        # Add this one.
+        versions.append(_CreateVersion(version_to_year[version] + 'e',
+            os.path.join(path, '..', '..')))
+
+    # The old method above does not work when only SDK is installed.
+    keys = [r'HKLM\Software\Microsoft\VisualStudio\SxS\VC7',
+            r'HKLM\Software\Wow6432Node\Microsoft\VisualStudio\SxS\VC7']
+    for index in range(len(keys)):
+      path = _RegistryGetValue(keys[index], version)
+      if not path:
+        continue
+      path = _ConvertToCygpath(path)
+      versions.append(_CreateVersion(version_to_year[version] + 'e',
+          os.path.join(path, '..'), sdk_based=True))
+
+  return versions
+
+
+def SelectVisualStudioVersion(version='auto'):
+  """Select which version of Visual Studio projects to generate.
+
+  Arguments:
+    version: Hook to allow caller to force a particular version (vs auto).
+  Returns:
+    An object representing a visual studio project format version.
+  """
+  # In auto mode, check environment variable for override.
+  if version == 'auto':
+    version = os.environ.get('GYP_MSVS_VERSION', 'auto')
+  version_map = {
+    'auto': ('10.0', '12.0', '9.0', '8.0', '11.0'),
+    '2005': ('8.0',),
+    '2005e': ('8.0',),
+    '2008': ('9.0',),
+    '2008e': ('9.0',),
+    '2010': ('10.0',),
+    '2010e': ('10.0',),
+    '2012': ('11.0',),
+    '2012e': ('11.0',),
+    '2013': ('12.0',),
+    '2013e': ('12.0',),
+  }
+  override_path = os.environ.get('GYP_MSVS_OVERRIDE_PATH')
+  if override_path:
+    msvs_version = os.environ.get('GYP_MSVS_VERSION')
+    if not msvs_version:
+      raise ValueError('GYP_MSVS_OVERRIDE_PATH requires GYP_MSVS_VERSION to be '
+                       'set to a particular version (e.g. 2010e).')
+    return _CreateVersion(msvs_version, override_path, sdk_based=True)
+  version = str(version)
+  versions = _DetectVisualStudioVersions(version_map[version], 'e' in version)
+  if not versions:
+    if version == 'auto':
+      # Default to 2005 if we couldn't find anything
+      return _CreateVersion('2005', None)
+    else:
+      return _CreateVersion(version, None)
+  return versions[0]
diff --git a/deps/gyp/pylib/gyp/__init__.py b/deps/gyp/pylib/gyp/__init__.py
new file mode 100755
index 0000000000..30edea5675
--- /dev/null
+++ b/deps/gyp/pylib/gyp/__init__.py
@@ -0,0 +1,537 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import copy
+import gyp.input
+import optparse
+import os.path
+import re
+import shlex
+import sys
+import traceback
+from gyp.common import GypError
+
+# Default debug modes for GYP
+debug = {}
+
+# List of "official" debug modes, but you can use anything you like.
+DEBUG_GENERAL = 'general'
+DEBUG_VARIABLES = 'variables'
+DEBUG_INCLUDES = 'includes'
+
+
+def DebugOutput(mode, message, *args):
+  if 'all' in gyp.debug or mode in gyp.debug:
+    ctx = ('unknown', 0, 'unknown')
+    try:
+      f = traceback.extract_stack(limit=2)
+      if f:
+        ctx = f[0][:3]
+    except:
+      pass
+    if args:
+      message %= args
+    print '%s:%s:%d:%s %s' % (mode.upper(), os.path.basename(ctx[0]),
+                              ctx[1], ctx[2], message)
+
+def FindBuildFiles():
+  extension = '.gyp'
+  files = os.listdir(os.getcwd())
+  build_files = []
+  for file in files:
+    if file.endswith(extension):
+      build_files.append(file)
+  return build_files
+
+
+def Load(build_files, format, default_variables={},
+         includes=[], depth='.', params=None, check=False,
+         circular_check=True):
+  """
+  Loads one or more specified build files.
+  default_variables and includes will be copied before use.
+  Returns the generator for the specified format and the
+  data returned by loading the specified build files.
+  """
+  if params is None:
+    params = {}
+
+  flavor = None
+  if '-' in format:
+    format, params['flavor'] = format.split('-', 1)
+
+  default_variables = copy.copy(default_variables)
+
+  # Default variables provided by this program and its modules should be
+  # named WITH_CAPITAL_LETTERS to provide a distinct "best practice" namespace,
+  # avoiding collisions with user and automatic variables.
+  default_variables['GENERATOR'] = format
+
+  # Format can be a custom python file, or by default the name of a module
+  # within gyp.generator.
+  if format.endswith('.py'):
+    generator_name = os.path.splitext(format)[0]
+    path, generator_name = os.path.split(generator_name)
+
+    # Make sure the path to the custom generator is in sys.path
+    # Don't worry about removing it once we are done.  Keeping the path
+    # to each generator that is used in sys.path is likely harmless and
+    # arguably a good idea.
+    path = os.path.abspath(path)
+    if path not in sys.path:
+      sys.path.insert(0, path)
+  else:
+    generator_name = 'gyp.generator.' + format
+
+  # These parameters are passed in order (as opposed to by key)
+  # because ActivePython cannot handle key parameters to __import__.
+  generator = __import__(generator_name, globals(), locals(), generator_name)
+  for (key, val) in generator.generator_default_variables.items():
+    default_variables.setdefault(key, val)
+
+  # Give the generator the opportunity to set additional variables based on
+  # the params it will receive in the output phase.
+  if getattr(generator, 'CalculateVariables', None):
+    generator.CalculateVariables(default_variables, params)
+
+  # Give the generator the opportunity to set generator_input_info based on
+  # the params it will receive in the output phase.
+  if getattr(generator, 'CalculateGeneratorInputInfo', None):
+    generator.CalculateGeneratorInputInfo(params)
+
+  # Fetch the generator specific info that gets fed to input, we use getattr
+  # so we can default things and the generators only have to provide what
+  # they need.
+  generator_input_info = {
+    'non_configuration_keys':
+        getattr(generator, 'generator_additional_non_configuration_keys', []),
+    'path_sections':
+        getattr(generator, 'generator_additional_path_sections', []),
+    'extra_sources_for_rules':
+        getattr(generator, 'generator_extra_sources_for_rules', []),
+    'generator_supports_multiple_toolsets':
+        getattr(generator, 'generator_supports_multiple_toolsets', False),
+    'generator_wants_static_library_dependencies_adjusted':
+        getattr(generator,
+                'generator_wants_static_library_dependencies_adjusted', True),
+    'generator_wants_sorted_dependencies':
+        getattr(generator, 'generator_wants_sorted_dependencies', False),
+    'generator_filelist_paths':
+        getattr(generator, 'generator_filelist_paths', None),
+  }
+
+  # Process the input specific to this generator.
+  result = gyp.input.Load(build_files, default_variables, includes[:],
+                          depth, generator_input_info, check, circular_check,
+                          params['parallel'], params['root_targets'])
+  return [generator] + result
+
+def NameValueListToDict(name_value_list):
+  """
+  Takes an array of strings of the form 'NAME=VALUE' and creates a dictionary
+  of the pairs.  If a string is simply NAME, then the value in the dictionary
+  is set to True.  If VALUE can be converted to an integer, it is.
+  """
+  result = { }
+  for item in name_value_list:
+    tokens = item.split('=', 1)
+    if len(tokens) == 2:
+      # If we can make it an int, use that, otherwise, use the string.
+      try:
+        token_value = int(tokens[1])
+      except ValueError:
+        token_value = tokens[1]
+      # Set the variable to the supplied value.
+      result[tokens[0]] = token_value
+    else:
+      # No value supplied, treat it as a boolean and set it.
+      result[tokens[0]] = True
+  return result
+
+def ShlexEnv(env_name):
+  flags = os.environ.get(env_name, [])
+  if flags:
+    flags = shlex.split(flags)
+  return flags
+
+def FormatOpt(opt, value):
+  if opt.startswith('--'):
+    return '%s=%s' % (opt, value)
+  return opt + value
+
+def RegenerateAppendFlag(flag, values, predicate, env_name, options):
+  """Regenerate a list of command line flags, for an option of action='append'.
+
+  The |env_name|, if given, is checked in the environment and used to generate
+  an initial list of options, then the options that were specified on the
+  command line (given in |values|) are appended.  This matches the handling of
+  environment variables and command line flags where command line flags override
+  the environment, while not requiring the environment to be set when the flags
+  are used again.
+  """
+  flags = []
+  if options.use_environment and env_name:
+    for flag_value in ShlexEnv(env_name):
+      value = FormatOpt(flag, predicate(flag_value))
+      if value in flags:
+        flags.remove(value)
+      flags.append(value)
+  if values:
+    for flag_value in values:
+      flags.append(FormatOpt(flag, predicate(flag_value)))
+  return flags
+
+def RegenerateFlags(options):
+  """Given a parsed options object, and taking the environment variables into
+  account, returns a list of flags that should regenerate an equivalent options
+  object (even in the absence of the environment variables.)
+
+  Any path options will be normalized relative to depth.
+
+  The format flag is not included, as it is assumed the calling generator will
+  set that as appropriate.
+  """
+  def FixPath(path):
+    path = gyp.common.FixIfRelativePath(path, options.depth)
+    if not path:
+      return os.path.curdir
+    return path
+
+  def Noop(value):
+    return value
+
+  # We always want to ignore the environment when regenerating, to avoid
+  # duplicate or changed flags in the environment at the time of regeneration.
+  flags = ['--ignore-environment']
+  for name, metadata in options._regeneration_metadata.iteritems():
+    opt = metadata['opt']
+    value = getattr(options, name)
+    value_predicate = metadata['type'] == 'path' and FixPath or Noop
+    action = metadata['action']
+    env_name = metadata['env_name']
+    if action == 'append':
+      flags.extend(RegenerateAppendFlag(opt, value, value_predicate,
+                                        env_name, options))
+    elif action in ('store', None):  # None is a synonym for 'store'.
+      if value:
+        flags.append(FormatOpt(opt, value_predicate(value)))
+      elif options.use_environment and env_name and os.environ.get(env_name):
+        flags.append(FormatOpt(opt, value_predicate(os.environ.get(env_name))))
+    elif action in ('store_true', 'store_false'):
+      if ((action == 'store_true' and value) or
+          (action == 'store_false' and not value)):
+        flags.append(opt)
+      elif options.use_environment and env_name:
+        print >>sys.stderr, ('Warning: environment regeneration unimplemented '
+                             'for %s flag %r env_name %r' % (action, opt,
+                                                             env_name))
+    else:
+      print >>sys.stderr, ('Warning: regeneration unimplemented for action %r '
+                           'flag %r' % (action, opt))
+
+  return flags
+
+class RegeneratableOptionParser(optparse.OptionParser):
+  def __init__(self):
+    self.__regeneratable_options = {}
+    optparse.OptionParser.__init__(self)
+
+  def add_option(self, *args, **kw):
+    """Add an option to the parser.
+
+    This accepts the same arguments as OptionParser.add_option, plus the
+    following:
+      regenerate: can be set to False to prevent this option from being included
+                  in regeneration.
+      env_name: name of environment variable that additional values for this
+                option come from.
+      type: adds type='path', to tell the regenerator that the values of
+            this option need to be made relative to options.depth
+    """
+    env_name = kw.pop('env_name', None)
+    if 'dest' in kw and kw.pop('regenerate', True):
+      dest = kw['dest']
+
+      # The path type is needed for regenerating, for optparse we can just treat
+      # it as a string.
+      type = kw.get('type')
+      if type == 'path':
+        kw['type'] = 'string'
+
+      self.__regeneratable_options[dest] = {
+          'action': kw.get('action'),
+          'type': type,
+          'env_name': env_name,
+          'opt': args[0],
+        }
+
+    optparse.OptionParser.add_option(self, *args, **kw)
+
+  def parse_args(self, *args):
+    values, args = optparse.OptionParser.parse_args(self, *args)
+    values._regeneration_metadata = self.__regeneratable_options
+    return values, args
+
+def gyp_main(args):
+  my_name = os.path.basename(sys.argv[0])
+
+  parser = RegeneratableOptionParser()
+  usage = 'usage: %s [options ...] [build_file ...]'
+  parser.set_usage(usage.replace('%s', '%prog'))
+  parser.add_option('--build', dest='configs', action='append',
+                    help='configuration for build after project generation')
+  parser.add_option('--check', dest='check', action='store_true',
+                    help='check format of gyp files')
+  parser.add_option('--config-dir', dest='config_dir', action='store',
+                    env_name='GYP_CONFIG_DIR', default=None,
+                    help='The location for configuration files like '
+                    'include.gypi.')
+  parser.add_option('-d', '--debug', dest='debug', metavar='DEBUGMODE',
+                    action='append', default=[], help='turn on a debugging '
+                    'mode for debugging GYP.  Supported modes are "variables", '
+                    '"includes" and "general" or "all" for all of them.')
+  parser.add_option('-D', dest='defines', action='append', metavar='VAR=VAL',
+                    env_name='GYP_DEFINES',
+                    help='sets variable VAR to value VAL')
+  parser.add_option('--depth', dest='depth', metavar='PATH', type='path',
+                    help='set DEPTH gyp variable to a relative path to PATH')
+  parser.add_option('-f', '--format', dest='formats', action='append',
+                    env_name='GYP_GENERATORS', regenerate=False,
+                    help='output formats to generate')
+  parser.add_option('-G', dest='generator_flags', action='append', default=[],
+                    metavar='FLAG=VAL', env_name='GYP_GENERATOR_FLAGS',
+                    help='sets generator flag FLAG to VAL')
+  parser.add_option('--generator-output', dest='generator_output',
+                    action='store', default=None, metavar='DIR', type='path',
+                    env_name='GYP_GENERATOR_OUTPUT',
+                    help='puts generated build files under DIR')
+  parser.add_option('--ignore-environment', dest='use_environment',
+                    action='store_false', default=True, regenerate=False,
+                    help='do not read options from environment variables')
+  parser.add_option('-I', '--include', dest='includes', action='append',
+                    metavar='INCLUDE', type='path',
+                    help='files to include in all loaded .gyp files')
+  # --no-circular-check disables the check for circular relationships between
+  # .gyp files.  These relationships should not exist, but they've only been
+  # observed to be harmful with the Xcode generator.  Chromium's .gyp files
+  # currently have some circular relationships on non-Mac platforms, so this
+  # option allows the strict behavior to be used on Macs and the lenient
+  # behavior to be used elsewhere.
+  # TODO(mark): Remove this option when http://crbug.com/35878 is fixed.
+  parser.add_option('--no-circular-check', dest='circular_check',
+                    action='store_false', default=True, regenerate=False,
+                    help="don't check for circular relationships between files")
+  parser.add_option('--no-parallel', action='store_true', default=False,
+                    help='Disable multiprocessing')
+  parser.add_option('-S', '--suffix', dest='suffix', default='',
+                    help='suffix to add to generated files')
+  parser.add_option('--toplevel-dir', dest='toplevel_dir', action='store',
+                    default=None, metavar='DIR', type='path',
+                    help='directory to use as the root of the source tree')
+  parser.add_option('-R', '--root-target', dest='root_targets',
+                    action='append', metavar='TARGET',
+                    help='include only TARGET and its deep dependencies')
+
+  options, build_files_arg = parser.parse_args(args)
+  build_files = build_files_arg
+
+  # Set up the configuration directory (defaults to ~/.gyp)
+  if not options.config_dir:
+    home = None
+    home_dot_gyp = None
+    if options.use_environment:
+      home_dot_gyp = os.environ.get('GYP_CONFIG_DIR', None)
+      if home_dot_gyp:
+        home_dot_gyp = os.path.expanduser(home_dot_gyp)
+
+    if not home_dot_gyp:
+      home_vars = ['HOME']
+      if sys.platform in ('cygwin', 'win32'):
+        home_vars.append('USERPROFILE')
+      for home_var in home_vars:
+        home = os.getenv(home_var)
+        if home != None:
+          home_dot_gyp = os.path.join(home, '.gyp')
+          if not os.path.exists(home_dot_gyp):
+            home_dot_gyp = None
+          else:
+            break
+  else:
+    home_dot_gyp = os.path.expanduser(options.config_dir)
+
+  if home_dot_gyp and not os.path.exists(home_dot_gyp):
+    home_dot_gyp = None
+
+  if not options.formats:
+    # If no format was given on the command line, then check the env variable.
+    generate_formats = []
+    if options.use_environment:
+      generate_formats = os.environ.get('GYP_GENERATORS', [])
+    if generate_formats:
+      generate_formats = re.split('[\s,]', generate_formats)
+    if generate_formats:
+      options.formats = generate_formats
+    else:
+      # Nothing in the variable, default based on platform.
+      if sys.platform == 'darwin':
+        options.formats = ['xcode']
+      elif sys.platform in ('win32', 'cygwin'):
+        options.formats = ['msvs']
+      else:
+        options.formats = ['make']
+
+  if not options.generator_output and options.use_environment:
+    g_o = os.environ.get('GYP_GENERATOR_OUTPUT')
+    if g_o:
+      options.generator_output = g_o
+
+  options.parallel = not options.no_parallel
+
+  for mode in options.debug:
+    gyp.debug[mode] = 1
+
+  # Do an extra check to avoid work when we're not debugging.
+  if DEBUG_GENERAL in gyp.debug:
+    DebugOutput(DEBUG_GENERAL, 'running with these options:')
+    for option, value in sorted(options.__dict__.items()):
+      if option[0] == '_':
+        continue
+      if isinstance(value, basestring):
+        DebugOutput(DEBUG_GENERAL, "  %s: '%s'", option, value)
+      else:
+        DebugOutput(DEBUG_GENERAL, "  %s: %s", option, value)
+
+  if not build_files:
+    build_files = FindBuildFiles()
+  if not build_files:
+    raise GypError((usage + '\n\n%s: error: no build_file') %
+                   (my_name, my_name))
+
+  # TODO(mark): Chromium-specific hack!
+  # For Chromium, the gyp "depth" variable should always be a relative path
+  # to Chromium's top-level "src" directory.  If no depth variable was set
+  # on the command line, try to find a "src" directory by looking at the
+  # absolute path to each build file's directory.  The first "src" component
+  # found will be treated as though it were the path used for --depth.
+  if not options.depth:
+    for build_file in build_files:
+      build_file_dir = os.path.abspath(os.path.dirname(build_file))
+      build_file_dir_components = build_file_dir.split(os.path.sep)
+      components_len = len(build_file_dir_components)
+      for index in xrange(components_len - 1, -1, -1):
+        if build_file_dir_components[index] == 'src':
+          options.depth = os.path.sep.join(build_file_dir_components)
+          break
+        del build_file_dir_components[index]
+
+      # If the inner loop found something, break without advancing to another
+      # build file.
+      if options.depth:
+        break
+
+    if not options.depth:
+      raise GypError('Could not automatically locate src directory.  This is'
+                     'a temporary Chromium feature that will be removed.  Use'
+                     '--depth as a workaround.')
+
+  # If toplevel-dir is not set, we assume that depth is the root of our source
+  # tree.
+  if not options.toplevel_dir:
+    options.toplevel_dir = options.depth
+
+  # -D on the command line sets variable defaults - D isn't just for define,
+  # it's for default.  Perhaps there should be a way to force (-F?) a
+  # variable's value so that it can't be overridden by anything else.
+  cmdline_default_variables = {}
+  defines = []
+  if options.use_environment:
+    defines += ShlexEnv('GYP_DEFINES')
+  if options.defines:
+    defines += options.defines
+  cmdline_default_variables = NameValueListToDict(defines)
+  if DEBUG_GENERAL in gyp.debug:
+    DebugOutput(DEBUG_GENERAL,
+                "cmdline_default_variables: %s", cmdline_default_variables)
+
+  # Set up includes.
+  includes = []
+
+  # If ~/.gyp/include.gypi exists, it'll be forcibly included into every
+  # .gyp file that's loaded, before anything else is included.
+  if home_dot_gyp != None:
+    default_include = os.path.join(home_dot_gyp, 'include.gypi')
+    if os.path.exists(default_include):
+      print 'Using overrides found in ' + default_include
+      includes.append(default_include)
+
+  # Command-line --include files come after the default include.
+  if options.includes:
+    includes.extend(options.includes)
+
+  # Generator flags should be prefixed with the target generator since they
+  # are global across all generator runs.
+  gen_flags = []
+  if options.use_environment:
+    gen_flags += ShlexEnv('GYP_GENERATOR_FLAGS')
+  if options.generator_flags:
+    gen_flags += options.generator_flags
+  generator_flags = NameValueListToDict(gen_flags)
+  if DEBUG_GENERAL in gyp.debug.keys():
+    DebugOutput(DEBUG_GENERAL, "generator_flags: %s", generator_flags)
+
+  # Generate all requested formats (use a set in case we got one format request
+  # twice)
+  for format in set(options.formats):
+    params = {'options': options,
+              'build_files': build_files,
+              'generator_flags': generator_flags,
+              'cwd': os.getcwd(),
+              'build_files_arg': build_files_arg,
+              'gyp_binary': sys.argv[0],
+              'home_dot_gyp': home_dot_gyp,
+              'parallel': options.parallel,
+              'root_targets': options.root_targets}
+
+    # Start with the default variables from the command line.
+    [generator, flat_list, targets, data] = Load(build_files, format,
+                                                 cmdline_default_variables,
+                                                 includes, options.depth,
+                                                 params, options.check,
+                                                 options.circular_check)
+
+    # TODO(mark): Pass |data| for now because the generator needs a list of
+    # build files that came in.  In the future, maybe it should just accept
+    # a list, and not the whole data dict.
+    # NOTE: flat_list is the flattened dependency graph specifying the order
+    # that targets may be built.  Build systems that operate serially or that
+    # need to have dependencies defined before dependents reference them should
+    # generate targets in the order specified in flat_list.
+    generator.GenerateOutput(flat_list, targets, data, params)
+
+    if options.configs:
+      valid_configs = targets[flat_list[0]]['configurations'].keys()
+      for conf in options.configs:
+        if conf not in valid_configs:
+          raise GypError('Invalid config specified via --build: %s' % conf)
+      generator.PerformBuild(data, options.configs, params)
+
+  # Done
+  return 0
+
+
+def main(args):
+  try:
+    return gyp_main(args)
+  except GypError, e:
+    sys.stderr.write("gyp: %s\n" % e)
+    return 1
+
+# NOTE: setuptools generated console_scripts calls function with no arguments
+def script_main():
+  return main(sys.argv[1:])
+
+if __name__ == '__main__':
+  sys.exit(script_main())
diff --git a/deps/gyp/pylib/gyp/common.py b/deps/gyp/pylib/gyp/common.py
new file mode 100644
index 0000000000..f9c6c6f3a8
--- /dev/null
+++ b/deps/gyp/pylib/gyp/common.py
@@ -0,0 +1,521 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from __future__ import with_statement
+
+import errno
+import filecmp
+import os.path
+import re
+import tempfile
+import sys
+
+
+# A minimal memoizing decorator. It'll blow up if the args aren't immutable,
+# among other "problems".
+class memoize(object):
+  def __init__(self, func):
+    self.func = func
+    self.cache = {}
+  def __call__(self, *args):
+    try:
+      return self.cache[args]
+    except KeyError:
+      result = self.func(*args)
+      self.cache[args] = result
+      return result
+
+
+class GypError(Exception):
+  """Error class representing an error, which is to be presented
+  to the user.  The main entry point will catch and display this.
+  """
+  pass
+
+
+def ExceptionAppend(e, msg):
+  """Append a message to the given exception's message."""
+  if not e.args:
+    e.args = (msg,)
+  elif len(e.args) == 1:
+    e.args = (str(e.args[0]) + ' ' + msg,)
+  else:
+    e.args = (str(e.args[0]) + ' ' + msg,) + e.args[1:]
+
+
+def FindQualifiedTargets(target, qualified_list):
+  """
+  Given a list of qualified targets, return the qualified targets for the
+  specified |target|.
+  """
+  return [t for t in qualified_list if ParseQualifiedTarget(t)[1] == target]
+
+
+def ParseQualifiedTarget(target):
+  # Splits a qualified target into a build file, target name and toolset.
+
+  # NOTE: rsplit is used to disambiguate the Windows drive letter separator.
+  target_split = target.rsplit(':', 1)
+  if len(target_split) == 2:
+    [build_file, target] = target_split
+  else:
+    build_file = None
+
+  target_split = target.rsplit('#', 1)
+  if len(target_split) == 2:
+    [target, toolset] = target_split
+  else:
+    toolset = None
+
+  return [build_file, target, toolset]
+
+
+def ResolveTarget(build_file, target, toolset):
+  # This function resolves a target into a canonical form:
+  # - a fully defined build file, either absolute or relative to the current
+  # directory
+  # - a target name
+  # - a toolset
+  #
+  # build_file is the file relative to which 'target' is defined.
+  # target is the qualified target.
+  # toolset is the default toolset for that target.
+  [parsed_build_file, target, parsed_toolset] = ParseQualifiedTarget(target)
+
+  if parsed_build_file:
+    if build_file:
+      # If a relative path, parsed_build_file is relative to the directory
+      # containing build_file.  If build_file is not in the current directory,
+      # parsed_build_file is not a usable path as-is.  Resolve it by
+      # interpreting it as relative to build_file.  If parsed_build_file is
+      # absolute, it is usable as a path regardless of the current directory,
+      # and os.path.join will return it as-is.
+      build_file = os.path.normpath(os.path.join(os.path.dirname(build_file),
+                                                 parsed_build_file))
+      # Further (to handle cases like ../cwd), make it relative to cwd)
+      if not os.path.isabs(build_file):
+        build_file = RelativePath(build_file, '.')
+    else:
+      build_file = parsed_build_file
+
+  if parsed_toolset:
+    toolset = parsed_toolset
+
+  return [build_file, target, toolset]
+
+
+def BuildFile(fully_qualified_target):
+  # Extracts the build file from the fully qualified target.
+  return ParseQualifiedTarget(fully_qualified_target)[0]
+
+
+def GetEnvironFallback(var_list, default):
+  """Look up a key in the environment, with fallback to secondary keys
+  and finally falling back to a default value."""
+  for var in var_list:
+    if var in os.environ:
+      return os.environ[var]
+  return default
+
+
+def QualifiedTarget(build_file, target, toolset):
+  # "Qualified" means the file that a target was defined in and the target
+  # name, separated by a colon, suffixed by a # and the toolset name:
+  # /path/to/file.gyp:target_name#toolset
+  fully_qualified = build_file + ':' + target
+  if toolset:
+    fully_qualified = fully_qualified + '#' + toolset
+  return fully_qualified
+
+
+@memoize
+def RelativePath(path, relative_to):
+  # Assuming both |path| and |relative_to| are relative to the current
+  # directory, returns a relative path that identifies path relative to
+  # relative_to.
+
+  # Convert to normalized (and therefore absolute paths).
+  path = os.path.realpath(path)
+  relative_to = os.path.realpath(relative_to)
+
+  # On Windows, we can't create a relative path to a different drive, so just
+  # use the absolute path.
+  if sys.platform == 'win32':
+    if (os.path.splitdrive(path)[0].lower() !=
+        os.path.splitdrive(relative_to)[0].lower()):
+      return path
+
+  # Split the paths into components.
+  path_split = path.split(os.path.sep)
+  relative_to_split = relative_to.split(os.path.sep)
+
+  # Determine how much of the prefix the two paths share.
+  prefix_len = len(os.path.commonprefix([path_split, relative_to_split]))
+
+  # Put enough ".." components to back up out of relative_to to the common
+  # prefix, and then append the part of path_split after the common prefix.
+  relative_split = [os.path.pardir] * (len(relative_to_split) - prefix_len) + \
+                   path_split[prefix_len:]
+
+  if len(relative_split) == 0:
+    # The paths were the same.
+    return ''
+
+  # Turn it back into a string and we're done.
+  return os.path.join(*relative_split)
+
+
+@memoize
+def InvertRelativePath(path, toplevel_dir=None):
+  """Given a path like foo/bar that is relative to toplevel_dir, return
+  the inverse relative path back to the toplevel_dir.
+
+  E.g. os.path.normpath(os.path.join(path, InvertRelativePath(path)))
+  should always produce the empty string, unless the path contains symlinks.
+  """
+  if not path:
+    return path
+  toplevel_dir = '.' if toplevel_dir is None else toplevel_dir
+  return RelativePath(toplevel_dir, os.path.join(toplevel_dir, path))
+
+
+def FixIfRelativePath(path, relative_to):
+  # Like RelativePath but returns |path| unchanged if it is absolute.
+  if os.path.isabs(path):
+    return path
+  return RelativePath(path, relative_to)
+
+
+def UnrelativePath(path, relative_to):
+  # Assuming that |relative_to| is relative to the current directory, and |path|
+  # is a path relative to the dirname of |relative_to|, returns a path that
+  # identifies |path| relative to the current directory.
+  rel_dir = os.path.dirname(relative_to)
+  return os.path.normpath(os.path.join(rel_dir, path))
+
+
+# re objects used by EncodePOSIXShellArgument.  See IEEE 1003.1 XCU.2.2 at
+# http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_02
+# and the documentation for various shells.
+
+# _quote is a pattern that should match any argument that needs to be quoted
+# with double-quotes by EncodePOSIXShellArgument.  It matches the following
+# characters appearing anywhere in an argument:
+#   \t, \n, space  parameter separators
+#   #              comments
+#   $              expansions (quoted to always expand within one argument)
+#   %              called out by IEEE 1003.1 XCU.2.2
+#   &              job control
+#   '              quoting
+#   (, )           subshell execution
+#   *, ?, [        pathname expansion
+#   ;              command delimiter
+#   <, >, |        redirection
+#   =              assignment
+#   {, }           brace expansion (bash)
+#   ~              tilde expansion
+# It also matches the empty string, because "" (or '') is the only way to
+# represent an empty string literal argument to a POSIX shell.
+#
+# This does not match the characters in _escape, because those need to be
+# backslash-escaped regardless of whether they appear in a double-quoted
+# string.
+_quote = re.compile('[\t\n #$%&\'()*;<=>?[{|}~]|^$')
+
+# _escape is a pattern that should match any character that needs to be
+# escaped with a backslash, whether or not the argument matched the _quote
+# pattern.  _escape is used with re.sub to backslash anything in _escape's
+# first match group, hence the (parentheses) in the regular expression.
+#
+# _escape matches the following characters appearing anywhere in an argument:
+#   "  to prevent POSIX shells from interpreting this character for quoting
+#   \  to prevent POSIX shells from interpreting this character for escaping
+#   `  to prevent POSIX shells from interpreting this character for command
+#      substitution
+# Missing from this list is $, because the desired behavior of
+# EncodePOSIXShellArgument is to permit parameter (variable) expansion.
+#
+# Also missing from this list is !, which bash will interpret as the history
+# expansion character when history is enabled.  bash does not enable history
+# by default in non-interactive shells, so this is not thought to be a problem.
+# ! was omitted from this list because bash interprets "\!" as a literal string
+# including the backslash character (avoiding history expansion but retaining
+# the backslash), which would not be correct for argument encoding.  Handling
+# this case properly would also be problematic because bash allows the history
+# character to be changed with the histchars shell variable.  Fortunately,
+# as history is not enabled in non-interactive shells and
+# EncodePOSIXShellArgument is only expected to encode for non-interactive
+# shells, there is no room for error here by ignoring !.
+_escape = re.compile(r'(["\\`])')
+
+def EncodePOSIXShellArgument(argument):
+  """Encodes |argument| suitably for consumption by POSIX shells.
+
+  argument may be quoted and escaped as necessary to ensure that POSIX shells
+  treat the returned value as a literal representing the argument passed to
+  this function.  Parameter (variable) expansions beginning with $ are allowed
+  to remain intact without escaping the $, to allow the argument to contain
+  references to variables to be expanded by the shell.
+  """
+
+  if not isinstance(argument, str):
+    argument = str(argument)
+
+  if _quote.search(argument):
+    quote = '"'
+  else:
+    quote = ''
+
+  encoded = quote + re.sub(_escape, r'\\\1', argument) + quote
+
+  return encoded
+
+
+def EncodePOSIXShellList(list):
+  """Encodes |list| suitably for consumption by POSIX shells.
+
+  Returns EncodePOSIXShellArgument for each item in list, and joins them
+  together using the space character as an argument separator.
+  """
+
+  encoded_arguments = []
+  for argument in list:
+    encoded_arguments.append(EncodePOSIXShellArgument(argument))
+  return ' '.join(encoded_arguments)
+
+
+def DeepDependencyTargets(target_dicts, roots):
+  """Returns the recursive list of target dependencies."""
+  dependencies = set()
+  pending = set(roots)
+  while pending:
+    # Pluck out one.
+    r = pending.pop()
+    # Skip if visited already.
+    if r in dependencies:
+      continue
+    # Add it.
+    dependencies.add(r)
+    # Add its children.
+    spec = target_dicts[r]
+    pending.update(set(spec.get('dependencies', [])))
+    pending.update(set(spec.get('dependencies_original', [])))
+  return list(dependencies - set(roots))
+
+
+def BuildFileTargets(target_list, build_file):
+  """From a target_list, returns the subset from the specified build_file.
+  """
+  return [p for p in target_list if BuildFile(p) == build_file]
+
+
+def AllTargets(target_list, target_dicts, build_file):
+  """Returns all targets (direct and dependencies) for the specified build_file.
+  """
+  bftargets = BuildFileTargets(target_list, build_file)
+  deptargets = DeepDependencyTargets(target_dicts, bftargets)
+  return bftargets + deptargets
+
+
+def WriteOnDiff(filename):
+  """Write to a file only if the new contents differ.
+
+  Arguments:
+    filename: name of the file to potentially write to.
+  Returns:
+    A file like object which will write to temporary file and only overwrite
+    the target if it differs (on close).
+  """
+
+  class Writer:
+    """Wrapper around file which only covers the target if it differs."""
+    def __init__(self):
+      # Pick temporary file.
+      tmp_fd, self.tmp_path = tempfile.mkstemp(
+          suffix='.tmp',
+          prefix=os.path.split(filename)[1] + '.gyp.',
+          dir=os.path.split(filename)[0])
+      try:
+        self.tmp_file = os.fdopen(tmp_fd, 'wb')
+      except Exception:
+        # Don't leave turds behind.
+        os.unlink(self.tmp_path)
+        raise
+
+    def __getattr__(self, attrname):
+      # Delegate everything else to self.tmp_file
+      return getattr(self.tmp_file, attrname)
+
+    def close(self):
+      try:
+        # Close tmp file.
+        self.tmp_file.close()
+        # Determine if different.
+        same = False
+        try:
+          same = filecmp.cmp(self.tmp_path, filename, False)
+        except OSError, e:
+          if e.errno != errno.ENOENT:
+            raise
+
+        if same:
+          # The new file is identical to the old one, just get rid of the new
+          # one.
+          os.unlink(self.tmp_path)
+        else:
+          # The new file is different from the old one, or there is no old one.
+          # Rename the new file to the permanent name.
+          #
+          # tempfile.mkstemp uses an overly restrictive mode, resulting in a
+          # file that can only be read by the owner, regardless of the umask.
+          # There's no reason to not respect the umask here, which means that
+          # an extra hoop is required to fetch it and reset the new file's mode.
+          #
+          # No way to get the umask without setting a new one?  Set a safe one
+          # and then set it back to the old value.
+          umask = os.umask(077)
+          os.umask(umask)
+          os.chmod(self.tmp_path, 0666 & ~umask)
+          if sys.platform == 'win32' and os.path.exists(filename):
+            # NOTE: on windows (but not cygwin) rename will not replace an
+            # existing file, so it must be preceded with a remove. Sadly there
+            # is no way to make the switch atomic.
+            os.remove(filename)
+          os.rename(self.tmp_path, filename)
+      except Exception:
+        # Don't leave turds behind.
+        os.unlink(self.tmp_path)
+        raise
+
+  return Writer()
+
+
+def EnsureDirExists(path):
+  """Make sure the directory for |path| exists."""
+  try:
+    os.makedirs(os.path.dirname(path))
+  except OSError:
+    pass
+
+
+def GetFlavor(params):
+  """Returns |params.flavor| if it's set, the system's default flavor else."""
+  flavors = {
+    'cygwin': 'win',
+    'win32': 'win',
+    'darwin': 'mac',
+  }
+
+  if 'flavor' in params:
+    return params['flavor']
+  if sys.platform in flavors:
+    return flavors[sys.platform]
+  if sys.platform.startswith('sunos'):
+    return 'solaris'
+  if sys.platform.startswith('freebsd'):
+    return 'freebsd'
+  if sys.platform.startswith('openbsd'):
+    return 'openbsd'
+  if sys.platform.startswith('aix'):
+    return 'aix'
+
+  return 'linux'
+
+
+def CopyTool(flavor, out_path):
+  """Finds (flock|mac|win)_tool.gyp in the gyp directory and copies it
+  to |out_path|."""
+  # aix and solaris just need flock emulation. mac and win use more complicated
+  # support scripts.
+  prefix = {
+      'aix': 'flock',
+      'solaris': 'flock',
+      'mac': 'mac',
+      'win': 'win'
+      }.get(flavor, None)
+  if not prefix:
+    return
+
+  # Slurp input file.
+  source_path = os.path.join(
+      os.path.dirname(os.path.abspath(__file__)), '%s_tool.py' % prefix)
+  with open(source_path) as source_file:
+    source = source_file.readlines()
+
+  # Add header and write it out.
+  tool_path = os.path.join(out_path, 'gyp-%s-tool' % prefix)
+  with open(tool_path, 'w') as tool_file:
+    tool_file.write(
+        ''.join([source[0], '# Generated by gyp. Do not edit.\n'] + source[1:]))
+
+  # Make file executable.
+  os.chmod(tool_path, 0755)
+
+
+# From Alex Martelli,
+# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52560
+# ASPN: Python Cookbook: Remove duplicates from a sequence
+# First comment, dated 2001/10/13.
+# (Also in the printed Python Cookbook.)
+
+def uniquer(seq, idfun=None):
+    if idfun is None:
+        idfun = lambda x: x
+    seen = {}
+    result = []
+    for item in seq:
+        marker = idfun(item)
+        if marker in seen: continue
+        seen[marker] = 1
+        result.append(item)
+    return result
+
+
+class CycleError(Exception):
+  """An exception raised when an unexpected cycle is detected."""
+  def __init__(self, nodes):
+    self.nodes = nodes
+  def __str__(self):
+    return 'CycleError: cycle involving: ' + str(self.nodes)
+
+
+def TopologicallySorted(graph, get_edges):
+  """Topologically sort based on a user provided edge definition.
+
+  Args:
+    graph: A list of node names.
+    get_edges: A function mapping from node name to a hashable collection
+               of node names which this node has outgoing edges to.
+  Returns:
+    A list containing all of the node in graph in topological order.
+    It is assumed that calling get_edges once for each node and caching is
+    cheaper than repeatedly calling get_edges.
+  Raises:
+    CycleError in the event of a cycle.
+  Example:
+    graph = {'a': '$(b) $(c)', 'b': 'hi', 'c': '$(b)'}
+    def GetEdges(node):
+      return re.findall(r'\$\(([^))]\)', graph[node])
+    print TopologicallySorted(graph.keys(), GetEdges)
+    ==>
+    ['a', 'c', b']
+  """
+  get_edges = memoize(get_edges)
+  visited = set()
+  visiting = set()
+  ordered_nodes = []
+  def Visit(node):
+    if node in visiting:
+      raise CycleError(visiting)
+    if node in visited:
+      return
+    visited.add(node)
+    visiting.add(node)
+    for neighbor in get_edges(node):
+      Visit(neighbor)
+    visiting.remove(node)
+    ordered_nodes.insert(0, node)
+  for node in sorted(graph):
+    Visit(node)
+  return ordered_nodes
diff --git a/deps/gyp/pylib/gyp/common_test.py b/deps/gyp/pylib/gyp/common_test.py
new file mode 100755
index 0000000000..ad6f9a1438
--- /dev/null
+++ b/deps/gyp/pylib/gyp/common_test.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Unit tests for the common.py file."""
+
+import gyp.common
+import unittest
+import sys
+
+
+class TestTopologicallySorted(unittest.TestCase):
+  def test_Valid(self):
+    """Test that sorting works on a valid graph with one possible order."""
+    graph = {
+        'a': ['b', 'c'],
+        'b': [],
+        'c': ['d'],
+        'd': ['b'],
+        }
+    def GetEdge(node):
+      return tuple(graph[node])
+    self.assertEqual(
+      gyp.common.TopologicallySorted(graph.keys(), GetEdge),
+      ['a', 'c', 'd', 'b'])
+
+  def test_Cycle(self):
+    """Test that an exception is thrown on a cyclic graph."""
+    graph = {
+        'a': ['b'],
+        'b': ['c'],
+        'c': ['d'],
+        'd': ['a'],
+        }
+    def GetEdge(node):
+      return tuple(graph[node])
+    self.assertRaises(
+      gyp.common.CycleError, gyp.common.TopologicallySorted,
+      graph.keys(), GetEdge)
+
+
+class TestGetFlavor(unittest.TestCase):
+  """Test that gyp.common.GetFlavor works as intended"""
+  original_platform = ''
+
+  def setUp(self):
+    self.original_platform = sys.platform
+
+  def tearDown(self):
+    sys.platform = self.original_platform
+
+  def assertFlavor(self, expected, argument, param):
+    sys.platform = argument
+    self.assertEqual(expected, gyp.common.GetFlavor(param))
+
+  def test_platform_default(self):
+    self.assertFlavor('freebsd', 'freebsd9' , {})
+    self.assertFlavor('freebsd', 'freebsd10', {})
+    self.assertFlavor('openbsd', 'openbsd5' , {})
+    self.assertFlavor('solaris', 'sunos5'   , {});
+    self.assertFlavor('solaris', 'sunos'    , {});
+    self.assertFlavor('linux'  , 'linux2'   , {});
+    self.assertFlavor('linux'  , 'linux3'   , {});
+
+  def test_param(self):
+    self.assertFlavor('foobar', 'linux2' , {'flavor': 'foobar'})
+
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/easy_xml.py b/deps/gyp/pylib/gyp/easy_xml.py
new file mode 100644
index 0000000000..bf949b6ac9
--- /dev/null
+++ b/deps/gyp/pylib/gyp/easy_xml.py
@@ -0,0 +1,157 @@
+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import re
+import os
+
+
+def XmlToString(content, encoding='utf-8', pretty=False):
+  """ Writes the XML content to disk, touching the file only if it has changed.
+
+  Visual Studio files have a lot of pre-defined structures.  This function makes
+  it easy to represent these structures as Python data structures, instead of
+  having to create a lot of function calls.
+
+  Each XML element of the content is represented as a list composed of:
+  1. The name of the element, a string,
+  2. The attributes of the element, a dictionary (optional), and
+  3+. The content of the element, if any.  Strings are simple text nodes and
+      lists are child elements.
+
+  Example 1:
+      <test/>
+  becomes
+      ['test']
+
+  Example 2:
+      <myelement a='value1' b='value2'>
+         <childtype>This is</childtype>
+         <childtype>it!</childtype>
+      </myelement>
+
+  becomes
+      ['myelement', {'a':'value1', 'b':'value2'},
+         ['childtype', 'This is'],
+         ['childtype', 'it!'],
+      ]
+
+  Args:
+    content:  The structured content to be converted.
+    encoding: The encoding to report on the first XML line.
+    pretty: True if we want pretty printing with indents and new lines.
+
+  Returns:
+    The XML content as a string.
+  """
+  # We create a huge list of all the elements of the file.
+  xml_parts = ['<?xml version="1.0" encoding="%s"?>' % encoding]
+  if pretty:
+    xml_parts.append('\n')
+  _ConstructContentList(xml_parts, content, pretty)
+
+  # Convert it to a string
+  return ''.join(xml_parts)
+
+
+def _ConstructContentList(xml_parts, specification, pretty, level=0):
+  """ Appends the XML parts corresponding to the specification.
+
+  Args:
+    xml_parts: A list of XML parts to be appended to.
+    specification:  The specification of the element.  See EasyXml docs.
+    pretty: True if we want pretty printing with indents and new lines.
+    level: Indentation level.
+  """
+  # The first item in a specification is the name of the element.
+  if pretty:
+    indentation = '  ' * level
+    new_line = '\n'
+  else:
+    indentation = ''
+    new_line = ''
+  name = specification[0]
+  if not isinstance(name, str):
+    raise Exception('The first item of an EasyXml specification should be '
+                    'a string.  Specification was ' + str(specification))
+  xml_parts.append(indentation + '<' + name)
+
+  # Optionally in second position is a dictionary of the attributes.
+  rest = specification[1:]
+  if rest and isinstance(rest[0], dict):
+    for at, val in sorted(rest[0].iteritems()):
+      xml_parts.append(' %s="%s"' % (at, _XmlEscape(val, attr=True)))
+    rest = rest[1:]
+  if rest:
+    xml_parts.append('>')
+    all_strings = reduce(lambda x, y: x and isinstance(y, str), rest, True)
+    multi_line = not all_strings
+    if multi_line and new_line:
+      xml_parts.append(new_line)
+    for child_spec in rest:
+      # If it's a string, append a text node.
+      # Otherwise recurse over that child definition
+      if isinstance(child_spec, str):
+       xml_parts.append(_XmlEscape(child_spec))
+      else:
+        _ConstructContentList(xml_parts, child_spec, pretty, level + 1)
+    if multi_line and indentation:
+      xml_parts.append(indentation)
+    xml_parts.append('</%s>%s' % (name, new_line))
+  else:
+    xml_parts.append('/>%s' % new_line)
+
+
+def WriteXmlIfChanged(content, path, encoding='utf-8', pretty=False,
+                      win32=False):
+  """ Writes the XML content to disk, touching the file only if it has changed.
+
+  Args:
+    content:  The structured content to be written.
+    path: Location of the file.
+    encoding: The encoding to report on the first line of the XML file.
+    pretty: True if we want pretty printing with indents and new lines.
+  """
+  xml_string = XmlToString(content, encoding, pretty)
+  if win32 and os.linesep != '\r\n':
+    xml_string = xml_string.replace('\n', '\r\n')
+
+  # Get the old content
+  try:
+    f = open(path, 'r')
+    existing = f.read()
+    f.close()
+  except:
+    existing = None
+
+  # It has changed, write it
+  if existing != xml_string:
+    f = open(path, 'w')
+    f.write(xml_string)
+    f.close()
+
+
+_xml_escape_map = {
+    '"': '&quot;',
+    "'": '&apos;',
+    '<': '&lt;',
+    '>': '&gt;',
+    '&': '&amp;',
+    '\n': '&#xA;',
+    '\r': '&#xD;',
+}
+
+
+_xml_escape_re = re.compile(
+    "(%s)" % "|".join(map(re.escape, _xml_escape_map.keys())))
+
+
+def _XmlEscape(value, attr=False):
+  """ Escape a string for inclusion in XML."""
+  def replace(match):
+    m = match.string[match.start() : match.end()]
+    # don't replace single quotes in attrs
+    if attr and m == "'":
+      return m
+    return _xml_escape_map[m]
+  return _xml_escape_re.sub(replace, value)
diff --git a/deps/gyp/pylib/gyp/easy_xml_test.py b/deps/gyp/pylib/gyp/easy_xml_test.py
new file mode 100755
index 0000000000..df64354982
--- /dev/null
+++ b/deps/gyp/pylib/gyp/easy_xml_test.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+""" Unit tests for the easy_xml.py file. """
+
+import gyp.easy_xml as easy_xml
+import unittest
+import StringIO
+
+
+class TestSequenceFunctions(unittest.TestCase):
+
+  def setUp(self):
+    self.stderr = StringIO.StringIO()
+
+  def test_EasyXml_simple(self):
+    self.assertEqual(
+      easy_xml.XmlToString(['test']),
+      '<?xml version="1.0" encoding="utf-8"?><test/>')
+
+    self.assertEqual(
+      easy_xml.XmlToString(['test'], encoding='Windows-1252'),
+      '<?xml version="1.0" encoding="Windows-1252"?><test/>')
+
+  def test_EasyXml_simple_with_attributes(self):
+    self.assertEqual(
+      easy_xml.XmlToString(['test2', {'a': 'value1', 'b': 'value2'}]),
+      '<?xml version="1.0" encoding="utf-8"?><test2 a="value1" b="value2"/>')
+
+  def test_EasyXml_escaping(self):
+    original = '<test>\'"\r&\nfoo'
+    converted = '&lt;test&gt;\'&quot;&#xD;&amp;&#xA;foo'
+    converted_apos = converted.replace("'", '&apos;')
+    self.assertEqual(
+      easy_xml.XmlToString(['test3', {'a': original}, original]),
+      '<?xml version="1.0" encoding="utf-8"?><test3 a="%s">%s</test3>' %
+      (converted, converted_apos))
+
+  def test_EasyXml_pretty(self):
+    self.assertEqual(
+      easy_xml.XmlToString(
+          ['test3',
+            ['GrandParent',
+              ['Parent1',
+                ['Child']
+              ],
+              ['Parent2']
+            ]
+          ],
+          pretty=True),
+      '<?xml version="1.0" encoding="utf-8"?>\n'
+      '<test3>\n'
+      '  <GrandParent>\n'
+      '    <Parent1>\n'
+      '      <Child/>\n'
+      '    </Parent1>\n'
+      '    <Parent2/>\n'
+      '  </GrandParent>\n'
+      '</test3>\n')
+
+
+  def test_EasyXml_complex(self):
+    # We want to create:
+    target = (
+      '<?xml version="1.0" encoding="utf-8"?>'
+      '<Project>'
+        '<PropertyGroup Label="Globals">'
+          '<ProjectGuid>{D2250C20-3A94-4FB9-AF73-11BC5B73884B}</ProjectGuid>'
+          '<Keyword>Win32Proj</Keyword>'
+          '<RootNamespace>automated_ui_tests</RootNamespace>'
+        '</PropertyGroup>'
+        '<Import Project="$(VCTargetsPath)\\Microsoft.Cpp.props"/>'
+        '<PropertyGroup '
+            'Condition="\'$(Configuration)|$(Platform)\'=='
+                       '\'Debug|Win32\'" Label="Configuration">'
+          '<ConfigurationType>Application</ConfigurationType>'
+          '<CharacterSet>Unicode</CharacterSet>'
+        '</PropertyGroup>'
+      '</Project>')
+
+    xml = easy_xml.XmlToString(
+        ['Project',
+          ['PropertyGroup', {'Label': 'Globals'},
+            ['ProjectGuid', '{D2250C20-3A94-4FB9-AF73-11BC5B73884B}'],
+            ['Keyword', 'Win32Proj'],
+            ['RootNamespace', 'automated_ui_tests']
+          ],
+          ['Import', {'Project': '$(VCTargetsPath)\\Microsoft.Cpp.props'}],
+          ['PropertyGroup',
+            {'Condition': "'$(Configuration)|$(Platform)'=='Debug|Win32'",
+             'Label': 'Configuration'},
+            ['ConfigurationType', 'Application'],
+            ['CharacterSet', 'Unicode']
+          ]
+        ])
+    self.assertEqual(xml, target)
+
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/flock_tool.py b/deps/gyp/pylib/gyp/flock_tool.py
new file mode 100755
index 0000000000..3e7efff26e
--- /dev/null
+++ b/deps/gyp/pylib/gyp/flock_tool.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""These functions are executed via gyp-flock-tool when using the Makefile
+generator.  Used on systems that don't have a built-in flock."""
+
+import fcntl
+import os
+import struct
+import subprocess
+import sys
+
+
+def main(args):
+  executor = FlockTool()
+  executor.Dispatch(args)
+
+
+class FlockTool(object):
+  """This class emulates the 'flock' command."""
+  def Dispatch(self, args):
+    """Dispatches a string command to a method."""
+    if len(args) < 1:
+      raise Exception("Not enough arguments")
+
+    method = "Exec%s" % self._CommandifyName(args[0])
+    getattr(self, method)(*args[1:])
+
+  def _CommandifyName(self, name_string):
+    """Transforms a tool name like copy-info-plist to CopyInfoPlist"""
+    return name_string.title().replace('-', '')
+
+  def ExecFlock(self, lockfile, *cmd_list):
+    """Emulates the most basic behavior of Linux's flock(1)."""
+    # Rely on exception handling to report errors.
+    # Note that the stock python on SunOS has a bug
+    # where fcntl.flock(fd, LOCK_EX) always fails
+    # with EBADF, that's why we use this F_SETLK
+    # hack instead.
+    fd = os.open(lockfile, os.O_WRONLY|os.O_NOCTTY|os.O_CREAT, 0666)
+    op = struct.pack('hhllhhl', fcntl.F_WRLCK, 0, 0, 0, 0, 0, 0)
+    fcntl.fcntl(fd, fcntl.F_SETLK, op)
+    return subprocess.call(cmd_list)
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))
diff --git a/deps/gyp/pylib/gyp/generator/__init__.py b/deps/gyp/pylib/gyp/generator/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/__init__.py
diff --git a/deps/gyp/pylib/gyp/generator/android.py b/deps/gyp/pylib/gyp/generator/android.py
new file mode 100644
index 0000000000..41346e2b1c
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/android.py
@@ -0,0 +1,1069 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Notes:
+#
+# This generates makefiles suitable for inclusion into the Android build system
+# via an Android.mk file. It is based on make.py, the standard makefile
+# generator.
+#
+# The code below generates a separate .mk file for each target, but
+# all are sourced by the top-level GypAndroid.mk.  This means that all
+# variables in .mk-files clobber one another, and furthermore that any
+# variables set potentially clash with other Android build system variables.
+# Try to avoid setting global variables where possible.
+
+import gyp
+import gyp.common
+import gyp.generator.make as make  # Reuse global functions from make backend.
+import os
+import re
+import subprocess
+
+generator_default_variables = {
+  'OS': 'android',
+  'EXECUTABLE_PREFIX': '',
+  'EXECUTABLE_SUFFIX': '',
+  'STATIC_LIB_PREFIX': 'lib',
+  'SHARED_LIB_PREFIX': 'lib',
+  'STATIC_LIB_SUFFIX': '.a',
+  'SHARED_LIB_SUFFIX': '.so',
+  'INTERMEDIATE_DIR': '$(gyp_intermediate_dir)',
+  'SHARED_INTERMEDIATE_DIR': '$(gyp_shared_intermediate_dir)',
+  'PRODUCT_DIR': '$(gyp_shared_intermediate_dir)',
+  'SHARED_LIB_DIR': '$(builddir)/lib.$(TOOLSET)',
+  'LIB_DIR': '$(obj).$(TOOLSET)',
+  'RULE_INPUT_ROOT': '%(INPUT_ROOT)s',  # This gets expanded by Python.
+  'RULE_INPUT_DIRNAME': '%(INPUT_DIRNAME)s',  # This gets expanded by Python.
+  'RULE_INPUT_PATH': '$(RULE_SOURCES)',
+  'RULE_INPUT_EXT': '$(suffix $<)',
+  'RULE_INPUT_NAME': '$(notdir $<)',
+  'CONFIGURATION_NAME': '$(GYP_CONFIGURATION)',
+}
+
+# Make supports multiple toolsets
+generator_supports_multiple_toolsets = True
+
+
+# Generator-specific gyp specs.
+generator_additional_non_configuration_keys = [
+    # Boolean to declare that this target does not want its name mangled.
+    'android_unmangled_name',
+]
+generator_additional_path_sections = []
+generator_extra_sources_for_rules = []
+
+
+SHARED_FOOTER = """\
+# "gyp_all_modules" is a concatenation of the "gyp_all_modules" targets from
+# all the included sub-makefiles. This is just here to clarify.
+gyp_all_modules:
+"""
+
+header = """\
+# This file is generated by gyp; do not edit.
+
+"""
+
+android_standard_include_paths = set([
+    # JNI_H_INCLUDE in build/core/binary.mk
+    'dalvik/libnativehelper/include/nativehelper',
+    # from SRC_HEADERS in build/core/config.mk
+    'system/core/include',
+    'hardware/libhardware/include',
+    'hardware/libhardware_legacy/include',
+    'hardware/ril/include',
+    'dalvik/libnativehelper/include',
+    'frameworks/native/include',
+    'frameworks/native/opengl/include',
+    'frameworks/base/include',
+    'frameworks/base/opengl/include',
+    'frameworks/base/native/include',
+    'external/skia/include',
+    # TARGET_C_INCLUDES in build/core/combo/TARGET_linux-arm.mk
+    'bionic/libc/arch-arm/include',
+    'bionic/libc/include',
+    'bionic/libstdc++/include',
+    'bionic/libc/kernel/common',
+    'bionic/libc/kernel/arch-arm',
+    'bionic/libm/include',
+    'bionic/libm/include/arm',
+    'bionic/libthread_db/include',
+    ])
+
+
+# Map gyp target types to Android module classes.
+MODULE_CLASSES = {
+    'static_library': 'STATIC_LIBRARIES',
+    'shared_library': 'SHARED_LIBRARIES',
+    'executable': 'EXECUTABLES',
+}
+
+
+def IsCPPExtension(ext):
+  return make.COMPILABLE_EXTENSIONS.get(ext) == 'cxx'
+
+
+def Sourceify(path):
+  """Convert a path to its source directory form. The Android backend does not
+     support options.generator_output, so this function is a noop."""
+  return path
+
+
+# Map from qualified target to path to output.
+# For Android, the target of these maps is a tuple ('static', 'modulename'),
+# ('dynamic', 'modulename'), or ('path', 'some/path') instead of a string,
+# since we link by module.
+target_outputs = {}
+# Map from qualified target to any linkable output.  A subset
+# of target_outputs.  E.g. when mybinary depends on liba, we want to
+# include liba in the linker line; when otherbinary depends on
+# mybinary, we just want to build mybinary first.
+target_link_deps = {}
+
+
+class AndroidMkWriter(object):
+  """AndroidMkWriter packages up the writing of one target-specific Android.mk.
+
+  Its only real entry point is Write(), and is mostly used for namespacing.
+  """
+
+  def __init__(self, android_top_dir):
+    self.android_top_dir = android_top_dir
+
+  def Write(self, qualified_target, relative_target, base_path, output_filename,
+            spec, configs, part_of_all):
+    """The main entry point: writes a .mk file for a single target.
+
+    Arguments:
+      qualified_target: target we're generating
+      relative_target: qualified target name relative to the root
+      base_path: path relative to source root we're building in, used to resolve
+                 target-relative paths
+      output_filename: output .mk file name to write
+      spec, configs: gyp info
+      part_of_all: flag indicating this target is part of 'all'
+    """
+    gyp.common.EnsureDirExists(output_filename)
+
+    self.fp = open(output_filename, 'w')
+
+    self.fp.write(header)
+
+    self.qualified_target = qualified_target
+    self.relative_target = relative_target
+    self.path = base_path
+    self.target = spec['target_name']
+    self.type = spec['type']
+    self.toolset = spec['toolset']
+
+    deps, link_deps = self.ComputeDeps(spec)
+
+    # Some of the generation below can add extra output, sources, or
+    # link dependencies.  All of the out params of the functions that
+    # follow use names like extra_foo.
+    extra_outputs = []
+    extra_sources = []
+
+    self.android_class = MODULE_CLASSES.get(self.type, 'GYP')
+    self.android_module = self.ComputeAndroidModule(spec)
+    (self.android_stem, self.android_suffix) = self.ComputeOutputParts(spec)
+    self.output = self.output_binary = self.ComputeOutput(spec)
+
+    # Standard header.
+    self.WriteLn('include $(CLEAR_VARS)\n')
+
+    # Module class and name.
+    self.WriteLn('LOCAL_MODULE_CLASS := ' + self.android_class)
+    self.WriteLn('LOCAL_MODULE := ' + self.android_module)
+    # Only emit LOCAL_MODULE_STEM if it's different to LOCAL_MODULE.
+    # The library module classes fail if the stem is set. ComputeOutputParts
+    # makes sure that stem == modulename in these cases.
+    if self.android_stem != self.android_module:
+      self.WriteLn('LOCAL_MODULE_STEM := ' + self.android_stem)
+    self.WriteLn('LOCAL_MODULE_SUFFIX := ' + self.android_suffix)
+    self.WriteLn('LOCAL_MODULE_TAGS := optional')
+    if self.toolset == 'host':
+      self.WriteLn('LOCAL_IS_HOST_MODULE := true')
+
+    # Grab output directories; needed for Actions and Rules.
+    self.WriteLn('gyp_intermediate_dir := $(call local-intermediates-dir)')
+    self.WriteLn('gyp_shared_intermediate_dir := '
+                 '$(call intermediates-dir-for,GYP,shared)')
+    self.WriteLn()
+
+    # List files this target depends on so that actions/rules/copies/sources
+    # can depend on the list.
+    # TODO: doesn't pull in things through transitive link deps; needed?
+    target_dependencies = [x[1] for x in deps if x[0] == 'path']
+    self.WriteLn('# Make sure our deps are built first.')
+    self.WriteList(target_dependencies, 'GYP_TARGET_DEPENDENCIES',
+                   local_pathify=True)
+
+    # Actions must come first, since they can generate more OBJs for use below.
+    if 'actions' in spec:
+      self.WriteActions(spec['actions'], extra_sources, extra_outputs)
+
+    # Rules must be early like actions.
+    if 'rules' in spec:
+      self.WriteRules(spec['rules'], extra_sources, extra_outputs)
+
+    if 'copies' in spec:
+      self.WriteCopies(spec['copies'], extra_outputs)
+
+    # GYP generated outputs.
+    self.WriteList(extra_outputs, 'GYP_GENERATED_OUTPUTS', local_pathify=True)
+
+    # Set LOCAL_ADDITIONAL_DEPENDENCIES so that Android's build rules depend
+    # on both our dependency targets and our generated files.
+    self.WriteLn('# Make sure our deps and generated files are built first.')
+    self.WriteLn('LOCAL_ADDITIONAL_DEPENDENCIES := $(GYP_TARGET_DEPENDENCIES) '
+                 '$(GYP_GENERATED_OUTPUTS)')
+    self.WriteLn()
+
+    # Sources.
+    if spec.get('sources', []) or extra_sources:
+      self.WriteSources(spec, configs, extra_sources)
+
+    self.WriteTarget(spec, configs, deps, link_deps, part_of_all)
+
+    # Update global list of target outputs, used in dependency tracking.
+    target_outputs[qualified_target] = ('path', self.output_binary)
+
+    # Update global list of link dependencies.
+    if self.type == 'static_library':
+      target_link_deps[qualified_target] = ('static', self.android_module)
+    elif self.type == 'shared_library':
+      target_link_deps[qualified_target] = ('shared', self.android_module)
+
+    self.fp.close()
+    return self.android_module
+
+
+  def WriteActions(self, actions, extra_sources, extra_outputs):
+    """Write Makefile code for any 'actions' from the gyp input.
+
+    extra_sources: a list that will be filled in with newly generated source
+                   files, if any
+    extra_outputs: a list that will be filled in with any outputs of these
+                   actions (used to make other pieces dependent on these
+                   actions)
+    """
+    for action in actions:
+      name = make.StringToMakefileVariable('%s_%s' % (self.relative_target,
+                                                      action['action_name']))
+      self.WriteLn('### Rules for action "%s":' % action['action_name'])
+      inputs = action['inputs']
+      outputs = action['outputs']
+
+      # Build up a list of outputs.
+      # Collect the output dirs we'll need.
+      dirs = set()
+      for out in outputs:
+        if not out.startswith('$'):
+          print ('WARNING: Action for target "%s" writes output to local path '
+                 '"%s".' % (self.target, out))
+        dir = os.path.split(out)[0]
+        if dir:
+          dirs.add(dir)
+      if int(action.get('process_outputs_as_sources', False)):
+        extra_sources += outputs
+
+      # Prepare the actual command.
+      command = gyp.common.EncodePOSIXShellList(action['action'])
+      if 'message' in action:
+        quiet_cmd = 'Gyp action: %s ($@)' % action['message']
+      else:
+        quiet_cmd = 'Gyp action: %s ($@)' % name
+      if len(dirs) > 0:
+        command = 'mkdir -p %s' % ' '.join(dirs) + '; ' + command
+
+      cd_action = 'cd $(gyp_local_path)/%s; ' % self.path
+      command = cd_action + command
+
+      # The makefile rules are all relative to the top dir, but the gyp actions
+      # are defined relative to their containing dir.  This replaces the gyp_*
+      # variables for the action rule with an absolute version so that the
+      # output goes in the right place.
+      # Only write the gyp_* rules for the "primary" output (:1);
+      # it's superfluous for the "extra outputs", and this avoids accidentally
+      # writing duplicate dummy rules for those outputs.
+      main_output = make.QuoteSpaces(self.LocalPathify(outputs[0]))
+      self.WriteLn('%s: gyp_local_path := $(LOCAL_PATH)' % main_output)
+      self.WriteLn('%s: gyp_intermediate_dir := '
+                   '$(abspath $(gyp_intermediate_dir))' % main_output)
+      self.WriteLn('%s: gyp_shared_intermediate_dir := '
+                   '$(abspath $(gyp_shared_intermediate_dir))' % main_output)
+
+      # Android's envsetup.sh adds a number of directories to the path including
+      # the built host binary directory. This causes actions/rules invoked by
+      # gyp to sometimes use these instead of system versions, e.g. bison.
+      # The built host binaries may not be suitable, and can cause errors.
+      # So, we remove them from the PATH using the ANDROID_BUILD_PATHS variable
+      # set by envsetup.
+      self.WriteLn('%s: export PATH := $(subst $(ANDROID_BUILD_PATHS),,$(PATH))'
+                   % main_output)
+
+      for input in inputs:
+        assert ' ' not in input, (
+            "Spaces in action input filenames not supported (%s)"  % input)
+      for output in outputs:
+        assert ' ' not in output, (
+            "Spaces in action output filenames not supported (%s)"  % output)
+
+      self.WriteLn('%s: %s $(GYP_TARGET_DEPENDENCIES)' %
+                   (main_output, ' '.join(map(self.LocalPathify, inputs))))
+      self.WriteLn('\t@echo "%s"' % quiet_cmd)
+      self.WriteLn('\t$(hide)%s\n' % command)
+      for output in outputs[1:]:
+        # Make each output depend on the main output, with an empty command
+        # to force make to notice that the mtime has changed.
+        self.WriteLn('%s: %s ;' % (self.LocalPathify(output), main_output))
+
+      extra_outputs += outputs
+      self.WriteLn()
+
+    self.WriteLn()
+
+
+  def WriteRules(self, rules, extra_sources, extra_outputs):
+    """Write Makefile code for any 'rules' from the gyp input.
+
+    extra_sources: a list that will be filled in with newly generated source
+                   files, if any
+    extra_outputs: a list that will be filled in with any outputs of these
+                   rules (used to make other pieces dependent on these rules)
+    """
+    if len(rules) == 0:
+      return
+    rule_trigger = '%s_rule_trigger' % self.android_module
+
+    did_write_rule = False
+    for rule in rules:
+      if len(rule.get('rule_sources', [])) == 0:
+        continue
+      did_write_rule = True
+      name = make.StringToMakefileVariable('%s_%s' % (self.relative_target,
+                                                      rule['rule_name']))
+      self.WriteLn('\n### Generated for rule "%s":' % name)
+      self.WriteLn('# "%s":' % rule)
+
+      inputs = rule.get('inputs')
+      for rule_source in rule.get('rule_sources', []):
+        (rule_source_dirname, rule_source_basename) = os.path.split(rule_source)
+        (rule_source_root, rule_source_ext) = \
+            os.path.splitext(rule_source_basename)
+
+        outputs = [self.ExpandInputRoot(out, rule_source_root,
+                                        rule_source_dirname)
+                   for out in rule['outputs']]
+
+        dirs = set()
+        for out in outputs:
+          if not out.startswith('$'):
+            print ('WARNING: Rule for target %s writes output to local path %s'
+                   % (self.target, out))
+          dir = os.path.dirname(out)
+          if dir:
+            dirs.add(dir)
+        extra_outputs += outputs
+        if int(rule.get('process_outputs_as_sources', False)):
+          extra_sources.extend(outputs)
+
+        components = []
+        for component in rule['action']:
+          component = self.ExpandInputRoot(component, rule_source_root,
+                                           rule_source_dirname)
+          if '$(RULE_SOURCES)' in component:
+            component = component.replace('$(RULE_SOURCES)',
+                                          rule_source)
+          components.append(component)
+
+        command = gyp.common.EncodePOSIXShellList(components)
+        cd_action = 'cd $(gyp_local_path)/%s; ' % self.path
+        command = cd_action + command
+        if dirs:
+          command = 'mkdir -p %s' % ' '.join(dirs) + '; ' + command
+
+        # We set up a rule to build the first output, and then set up
+        # a rule for each additional output to depend on the first.
+        outputs = map(self.LocalPathify, outputs)
+        main_output = outputs[0]
+        self.WriteLn('%s: gyp_local_path := $(LOCAL_PATH)' % main_output)
+        self.WriteLn('%s: gyp_intermediate_dir := '
+                     '$(abspath $(gyp_intermediate_dir))' % main_output)
+        self.WriteLn('%s: gyp_shared_intermediate_dir := '
+                     '$(abspath $(gyp_shared_intermediate_dir))' % main_output)
+
+        # See explanation in WriteActions.
+        self.WriteLn('%s: export PATH := '
+                     '$(subst $(ANDROID_BUILD_PATHS),,$(PATH))' % main_output)
+
+        main_output_deps = self.LocalPathify(rule_source)
+        if inputs:
+          main_output_deps += ' '
+          main_output_deps += ' '.join([self.LocalPathify(f) for f in inputs])
+
+        self.WriteLn('%s: %s $(GYP_TARGET_DEPENDENCIES)' %
+                     (main_output, main_output_deps))
+        self.WriteLn('\t%s\n' % command)
+        for output in outputs[1:]:
+          # Make each output depend on the main output, with an empty command
+          # to force make to notice that the mtime has changed.
+          self.WriteLn('%s: %s ;' % (output, main_output))
+        self.WriteLn('.PHONY: %s' % (rule_trigger))
+        self.WriteLn('%s: %s' % (rule_trigger, main_output))
+        self.WriteLn('')
+    if did_write_rule:
+      extra_sources.append(rule_trigger)  # Force all rules to run.
+      self.WriteLn('### Finished generating for all rules')
+      self.WriteLn('')
+
+
+  def WriteCopies(self, copies, extra_outputs):
+    """Write Makefile code for any 'copies' from the gyp input.
+
+    extra_outputs: a list that will be filled in with any outputs of this action
+                   (used to make other pieces dependent on this action)
+    """
+    self.WriteLn('### Generated for copy rule.')
+
+    variable = make.StringToMakefileVariable(self.relative_target + '_copies')
+    outputs = []
+    for copy in copies:
+      for path in copy['files']:
+        # The Android build system does not allow generation of files into the
+        # source tree. The destination should start with a variable, which will
+        # typically be $(gyp_intermediate_dir) or
+        # $(gyp_shared_intermediate_dir). Note that we can't use an assertion
+        # because some of the gyp tests depend on this.
+        if not copy['destination'].startswith('$'):
+          print ('WARNING: Copy rule for target %s writes output to '
+                 'local path %s' % (self.target, copy['destination']))
+
+        # LocalPathify() calls normpath, stripping trailing slashes.
+        path = Sourceify(self.LocalPathify(path))
+        filename = os.path.split(path)[1]
+        output = Sourceify(self.LocalPathify(os.path.join(copy['destination'],
+                                                          filename)))
+
+        self.WriteLn('%s: %s $(GYP_TARGET_DEPENDENCIES) | $(ACP)' %
+                     (output, path))
+        self.WriteLn('\t@echo Copying: $@')
+        self.WriteLn('\t$(hide) mkdir -p $(dir $@)')
+        self.WriteLn('\t$(hide) $(ACP) -rpf $< $@')
+        self.WriteLn()
+        outputs.append(output)
+    self.WriteLn('%s = %s' % (variable,
+                              ' '.join(map(make.QuoteSpaces, outputs))))
+    extra_outputs.append('$(%s)' % variable)
+    self.WriteLn()
+
+
+  def WriteSourceFlags(self, spec, configs):
+    """Write out the flags and include paths used to compile source files for
+    the current target.
+
+    Args:
+      spec, configs: input from gyp.
+    """
+    for configname, config in sorted(configs.iteritems()):
+      extracted_includes = []
+
+      self.WriteLn('\n# Flags passed to both C and C++ files.')
+      cflags, includes_from_cflags = self.ExtractIncludesFromCFlags(
+          config.get('cflags', []) + config.get('cflags_c', []))
+      extracted_includes.extend(includes_from_cflags)
+      self.WriteList(cflags, 'MY_CFLAGS_%s' % configname)
+
+      self.WriteList(config.get('defines'), 'MY_DEFS_%s' % configname,
+                     prefix='-D', quoter=make.EscapeCppDefine)
+
+      self.WriteLn('\n# Include paths placed before CFLAGS/CPPFLAGS')
+      includes = list(config.get('include_dirs', []))
+      includes.extend(extracted_includes)
+      includes = map(Sourceify, map(self.LocalPathify, includes))
+      includes = self.NormalizeIncludePaths(includes)
+      self.WriteList(includes, 'LOCAL_C_INCLUDES_%s' % configname)
+
+      self.WriteLn('\n# Flags passed to only C++ (and not C) files.')
+      self.WriteList(config.get('cflags_cc'), 'LOCAL_CPPFLAGS_%s' % configname)
+
+    self.WriteLn('\nLOCAL_CFLAGS := $(MY_CFLAGS_$(GYP_CONFIGURATION)) '
+                 '$(MY_DEFS_$(GYP_CONFIGURATION))')
+    # Undefine ANDROID for host modules
+    # TODO: the source code should not use macro ANDROID to tell if it's host
+    # or target module.
+    if self.toolset == 'host':
+      self.WriteLn('# Undefine ANDROID for host modules')
+      self.WriteLn('LOCAL_CFLAGS += -UANDROID')
+    self.WriteLn('LOCAL_C_INCLUDES := $(GYP_COPIED_SOURCE_ORIGIN_DIRS) '
+                                     '$(LOCAL_C_INCLUDES_$(GYP_CONFIGURATION))')
+    self.WriteLn('LOCAL_CPPFLAGS := $(LOCAL_CPPFLAGS_$(GYP_CONFIGURATION))')
+
+
+  def WriteSources(self, spec, configs, extra_sources):
+    """Write Makefile code for any 'sources' from the gyp input.
+    These are source files necessary to build the current target.
+    We need to handle shared_intermediate directory source files as
+    a special case by copying them to the intermediate directory and
+    treating them as a genereated sources. Otherwise the Android build
+    rules won't pick them up.
+
+    Args:
+      spec, configs: input from gyp.
+      extra_sources: Sources generated from Actions or Rules.
+    """
+    sources = filter(make.Compilable, spec.get('sources', []))
+    generated_not_sources = [x for x in extra_sources if not make.Compilable(x)]
+    extra_sources = filter(make.Compilable, extra_sources)
+
+    # Determine and output the C++ extension used by these sources.
+    # We simply find the first C++ file and use that extension.
+    all_sources = sources + extra_sources
+    local_cpp_extension = '.cpp'
+    for source in all_sources:
+      (root, ext) = os.path.splitext(source)
+      if IsCPPExtension(ext):
+        local_cpp_extension = ext
+        break
+    if local_cpp_extension != '.cpp':
+      self.WriteLn('LOCAL_CPP_EXTENSION := %s' % local_cpp_extension)
+
+    # We need to move any non-generated sources that are coming from the
+    # shared intermediate directory out of LOCAL_SRC_FILES and put them
+    # into LOCAL_GENERATED_SOURCES. We also need to move over any C++ files
+    # that don't match our local_cpp_extension, since Android will only
+    # generate Makefile rules for a single LOCAL_CPP_EXTENSION.
+    local_files = []
+    for source in sources:
+      (root, ext) = os.path.splitext(source)
+      if '$(gyp_shared_intermediate_dir)' in source:
+        extra_sources.append(source)
+      elif '$(gyp_intermediate_dir)' in source:
+        extra_sources.append(source)
+      elif IsCPPExtension(ext) and ext != local_cpp_extension:
+        extra_sources.append(source)
+      else:
+        local_files.append(os.path.normpath(os.path.join(self.path, source)))
+
+    # For any generated source, if it is coming from the shared intermediate
+    # directory then we add a Make rule to copy them to the local intermediate
+    # directory first. This is because the Android LOCAL_GENERATED_SOURCES
+    # must be in the local module intermediate directory for the compile rules
+    # to work properly. If the file has the wrong C++ extension, then we add
+    # a rule to copy that to intermediates and use the new version.
+    final_generated_sources = []
+    # If a source file gets copied, we still need to add the orginal source
+    # directory as header search path, for GCC searches headers in the
+    # directory that contains the source file by default.
+    origin_src_dirs = []
+    for source in extra_sources:
+      local_file = source
+      if not '$(gyp_intermediate_dir)/' in local_file:
+        basename = os.path.basename(local_file)
+        local_file = '$(gyp_intermediate_dir)/' + basename
+      (root, ext) = os.path.splitext(local_file)
+      if IsCPPExtension(ext) and ext != local_cpp_extension:
+        local_file = root + local_cpp_extension
+      if local_file != source:
+        self.WriteLn('%s: %s' % (local_file, self.LocalPathify(source)))
+        self.WriteLn('\tmkdir -p $(@D); cp $< $@')
+        origin_src_dirs.append(os.path.dirname(source))
+      final_generated_sources.append(local_file)
+
+    # We add back in all of the non-compilable stuff to make sure that the
+    # make rules have dependencies on them.
+    final_generated_sources.extend(generated_not_sources)
+    self.WriteList(final_generated_sources, 'LOCAL_GENERATED_SOURCES')
+
+    origin_src_dirs = gyp.common.uniquer(origin_src_dirs)
+    origin_src_dirs = map(Sourceify, map(self.LocalPathify, origin_src_dirs))
+    self.WriteList(origin_src_dirs, 'GYP_COPIED_SOURCE_ORIGIN_DIRS')
+
+    self.WriteList(local_files, 'LOCAL_SRC_FILES')
+
+    # Write out the flags used to compile the source; this must be done last
+    # so that GYP_COPIED_SOURCE_ORIGIN_DIRS can be used as an include path.
+    self.WriteSourceFlags(spec, configs)
+
+
+  def ComputeAndroidModule(self, spec):
+    """Return the Android module name used for a gyp spec.
+
+    We use the complete qualified target name to avoid collisions between
+    duplicate targets in different directories. We also add a suffix to
+    distinguish gyp-generated module names.
+    """
+
+    if int(spec.get('android_unmangled_name', 0)):
+      assert self.type != 'shared_library' or self.target.startswith('lib')
+      return self.target
+
+    if self.type == 'shared_library':
+      # For reasons of convention, the Android build system requires that all
+      # shared library modules are named 'libfoo' when generating -l flags.
+      prefix = 'lib_'
+    else:
+      prefix = ''
+
+    if spec['toolset'] == 'host':
+      suffix = '_host_gyp'
+    else:
+      suffix = '_gyp'
+
+    if self.path:
+      name = '%s%s_%s%s' % (prefix, self.path, self.target, suffix)
+    else:
+      name = '%s%s%s' % (prefix, self.target, suffix)
+
+    return make.StringToMakefileVariable(name)
+
+
+  def ComputeOutputParts(self, spec):
+    """Return the 'output basename' of a gyp spec, split into filename + ext.
+
+    Android libraries must be named the same thing as their module name,
+    otherwise the linker can't find them, so product_name and so on must be
+    ignored if we are building a library, and the "lib" prepending is
+    not done for Android.
+    """
+    assert self.type != 'loadable_module' # TODO: not supported?
+
+    target = spec['target_name']
+    target_prefix = ''
+    target_ext = ''
+    if self.type == 'static_library':
+      target = self.ComputeAndroidModule(spec)
+      target_ext = '.a'
+    elif self.type == 'shared_library':
+      target = self.ComputeAndroidModule(spec)
+      target_ext = '.so'
+    elif self.type == 'none':
+      target_ext = '.stamp'
+    elif self.type != 'executable':
+      print ("ERROR: What output file should be generated?",
+             "type", self.type, "target", target)
+
+    if self.type != 'static_library' and self.type != 'shared_library':
+      target_prefix = spec.get('product_prefix', target_prefix)
+      target = spec.get('product_name', target)
+      product_ext = spec.get('product_extension')
+      if product_ext:
+        target_ext = '.' + product_ext
+
+    target_stem = target_prefix + target
+    return (target_stem, target_ext)
+
+
+  def ComputeOutputBasename(self, spec):
+    """Return the 'output basename' of a gyp spec.
+
+    E.g., the loadable module 'foobar' in directory 'baz' will produce
+      'libfoobar.so'
+    """
+    return ''.join(self.ComputeOutputParts(spec))
+
+
+  def ComputeOutput(self, spec):
+    """Return the 'output' (full output path) of a gyp spec.
+
+    E.g., the loadable module 'foobar' in directory 'baz' will produce
+      '$(obj)/baz/libfoobar.so'
+    """
+    if self.type == 'executable' and self.toolset == 'host':
+      # We install host executables into shared_intermediate_dir so they can be
+      # run by gyp rules that refer to PRODUCT_DIR.
+      path = '$(gyp_shared_intermediate_dir)'
+    elif self.type == 'shared_library':
+      if self.toolset == 'host':
+        path = '$(HOST_OUT_INTERMEDIATE_LIBRARIES)'
+      else:
+        path = '$(TARGET_OUT_INTERMEDIATE_LIBRARIES)'
+    else:
+      # Other targets just get built into their intermediate dir.
+      if self.toolset == 'host':
+        path = '$(call intermediates-dir-for,%s,%s,true)' % (self.android_class,
+                                                            self.android_module)
+      else:
+        path = '$(call intermediates-dir-for,%s,%s)' % (self.android_class,
+                                                        self.android_module)
+
+    assert spec.get('product_dir') is None # TODO: not supported?
+    return os.path.join(path, self.ComputeOutputBasename(spec))
+
+  def NormalizeIncludePaths(self, include_paths):
+    """ Normalize include_paths.
+    Convert absolute paths to relative to the Android top directory;
+    filter out include paths that are already brought in by the Android build
+    system.
+
+    Args:
+      include_paths: A list of unprocessed include paths.
+    Returns:
+      A list of normalized include paths.
+    """
+    normalized = []
+    for path in include_paths:
+      if path[0] == '/':
+        path = gyp.common.RelativePath(path, self.android_top_dir)
+
+      # Filter out the Android standard search path.
+      if path not in android_standard_include_paths:
+        normalized.append(path)
+    return normalized
+
+  def ExtractIncludesFromCFlags(self, cflags):
+    """Extract includes "-I..." out from cflags
+
+    Args:
+      cflags: A list of compiler flags, which may be mixed with "-I.."
+    Returns:
+      A tuple of lists: (clean_clfags, include_paths). "-I.." is trimmed.
+    """
+    clean_cflags = []
+    include_paths = []
+    for flag in cflags:
+      if flag.startswith('-I'):
+        include_paths.append(flag[2:])
+      else:
+        clean_cflags.append(flag)
+
+    return (clean_cflags, include_paths)
+
+  def ComputeAndroidLibraryModuleNames(self, libraries):
+    """Compute the Android module names from libraries, ie spec.get('libraries')
+
+    Args:
+      libraries: the value of spec.get('libraries')
+    Returns:
+      A tuple (static_lib_modules, dynamic_lib_modules)
+    """
+    static_lib_modules = []
+    dynamic_lib_modules = []
+    for libs in libraries:
+      # Libs can have multiple words.
+      for lib in libs.split():
+        # Filter the system libraries, which are added by default by the Android
+        # build system.
+        if (lib == '-lc' or lib == '-lstdc++' or lib == '-lm' or
+            lib.endswith('libgcc.a')):
+          continue
+        match = re.search(r'([^/]+)\.a$', lib)
+        if match:
+          static_lib_modules.append(match.group(1))
+          continue
+        match = re.search(r'([^/]+)\.so$', lib)
+        if match:
+          dynamic_lib_modules.append(match.group(1))
+          continue
+        # "-lstlport" -> libstlport
+        if lib.startswith('-l'):
+          if lib.endswith('_static'):
+            static_lib_modules.append('lib' + lib[2:])
+          else:
+            dynamic_lib_modules.append('lib' + lib[2:])
+    return (static_lib_modules, dynamic_lib_modules)
+
+
+  def ComputeDeps(self, spec):
+    """Compute the dependencies of a gyp spec.
+
+    Returns a tuple (deps, link_deps), where each is a list of
+    filenames that will need to be put in front of make for either
+    building (deps) or linking (link_deps).
+    """
+    deps = []
+    link_deps = []
+    if 'dependencies' in spec:
+      deps.extend([target_outputs[dep] for dep in spec['dependencies']
+                   if target_outputs[dep]])
+      for dep in spec['dependencies']:
+        if dep in target_link_deps:
+          link_deps.append(target_link_deps[dep])
+      deps.extend(link_deps)
+    return (gyp.common.uniquer(deps), gyp.common.uniquer(link_deps))
+
+
+  def WriteTargetFlags(self, spec, configs, link_deps):
+    """Write Makefile code to specify the link flags and library dependencies.
+
+    spec, configs: input from gyp.
+    link_deps: link dependency list; see ComputeDeps()
+    """
+    for configname, config in sorted(configs.iteritems()):
+      ldflags = list(config.get('ldflags', []))
+      self.WriteLn('')
+      self.WriteList(ldflags, 'LOCAL_LDFLAGS_%s' % configname)
+    self.WriteLn('\nLOCAL_LDFLAGS := $(LOCAL_LDFLAGS_$(GYP_CONFIGURATION))')
+
+    # Libraries (i.e. -lfoo)
+    libraries = gyp.common.uniquer(spec.get('libraries', []))
+    static_libs, dynamic_libs = self.ComputeAndroidLibraryModuleNames(
+        libraries)
+
+    # Link dependencies (i.e. libfoo.a, libfoo.so)
+    static_link_deps = [x[1] for x in link_deps if x[0] == 'static']
+    shared_link_deps = [x[1] for x in link_deps if x[0] == 'shared']
+    self.WriteLn('')
+    self.WriteList(static_libs + static_link_deps,
+                   'LOCAL_STATIC_LIBRARIES')
+    self.WriteLn('# Enable grouping to fix circular references')
+    self.WriteLn('LOCAL_GROUP_STATIC_LIBRARIES := true')
+    self.WriteLn('')
+    self.WriteList(dynamic_libs + shared_link_deps,
+                   'LOCAL_SHARED_LIBRARIES')
+
+
+  def WriteTarget(self, spec, configs, deps, link_deps, part_of_all):
+    """Write Makefile code to produce the final target of the gyp spec.
+
+    spec, configs: input from gyp.
+    deps, link_deps: dependency lists; see ComputeDeps()
+    part_of_all: flag indicating this target is part of 'all'
+    """
+    self.WriteLn('### Rules for final target.')
+
+    if self.type != 'none':
+      self.WriteTargetFlags(spec, configs, link_deps)
+
+    # Add to the set of targets which represent the gyp 'all' target. We use the
+    # name 'gyp_all_modules' as the Android build system doesn't allow the use
+    # of the Make target 'all' and because 'all_modules' is the equivalent of
+    # the Make target 'all' on Android.
+    if part_of_all:
+      self.WriteLn('# Add target alias to "gyp_all_modules" target.')
+      self.WriteLn('.PHONY: gyp_all_modules')
+      self.WriteLn('gyp_all_modules: %s' % self.android_module)
+      self.WriteLn('')
+
+    # Add an alias from the gyp target name to the Android module name. This
+    # simplifies manual builds of the target, and is required by the test
+    # framework.
+    if self.target != self.android_module:
+      self.WriteLn('# Alias gyp target name.')
+      self.WriteLn('.PHONY: %s' % self.target)
+      self.WriteLn('%s: %s' % (self.target, self.android_module))
+      self.WriteLn('')
+
+    # Add the command to trigger build of the target type depending
+    # on the toolset. Ex: BUILD_STATIC_LIBRARY vs. BUILD_HOST_STATIC_LIBRARY
+    # NOTE: This has to come last!
+    modifier = ''
+    if self.toolset == 'host':
+      modifier = 'HOST_'
+    if self.type == 'static_library':
+      self.WriteLn('include $(BUILD_%sSTATIC_LIBRARY)' % modifier)
+    elif self.type == 'shared_library':
+      self.WriteLn('LOCAL_PRELINK_MODULE := false')
+      self.WriteLn('include $(BUILD_%sSHARED_LIBRARY)' % modifier)
+    elif self.type == 'executable':
+      if self.toolset == 'host':
+        self.WriteLn('LOCAL_MODULE_PATH := $(gyp_shared_intermediate_dir)')
+      else:
+        # Don't install target executables for now, as it results in them being
+        # included in ROM. This can be revisited if there's a reason to install
+        # them later.
+        self.WriteLn('LOCAL_UNINSTALLABLE_MODULE := true')
+      self.WriteLn('include $(BUILD_%sEXECUTABLE)' % modifier)
+    else:
+      self.WriteLn('LOCAL_MODULE_PATH := $(PRODUCT_OUT)/gyp_stamp')
+      self.WriteLn('LOCAL_UNINSTALLABLE_MODULE := true')
+      self.WriteLn()
+      self.WriteLn('include $(BUILD_SYSTEM)/base_rules.mk')
+      self.WriteLn()
+      self.WriteLn('$(LOCAL_BUILT_MODULE): $(LOCAL_ADDITIONAL_DEPENDENCIES)')
+      self.WriteLn('\t$(hide) echo "Gyp timestamp: $@"')
+      self.WriteLn('\t$(hide) mkdir -p $(dir $@)')
+      self.WriteLn('\t$(hide) touch $@')
+
+
+  def WriteList(self, value_list, variable=None, prefix='',
+                quoter=make.QuoteIfNecessary, local_pathify=False):
+    """Write a variable definition that is a list of values.
+
+    E.g. WriteList(['a','b'], 'foo', prefix='blah') writes out
+         foo = blaha blahb
+    but in a pretty-printed style.
+    """
+    values = ''
+    if value_list:
+      value_list = [quoter(prefix + l) for l in value_list]
+      if local_pathify:
+        value_list = [self.LocalPathify(l) for l in value_list]
+      values = ' \\\n\t' + ' \\\n\t'.join(value_list)
+    self.fp.write('%s :=%s\n\n' % (variable, values))
+
+
+  def WriteLn(self, text=''):
+    self.fp.write(text + '\n')
+
+
+  def LocalPathify(self, path):
+    """Convert a subdirectory-relative path into a normalized path which starts
+    with the make variable $(LOCAL_PATH) (i.e. the top of the project tree).
+    Absolute paths, or paths that contain variables, are just normalized."""
+    if '$(' in path or os.path.isabs(path):
+      # path is not a file in the project tree in this case, but calling
+      # normpath is still important for trimming trailing slashes.
+      return os.path.normpath(path)
+    local_path = os.path.join('$(LOCAL_PATH)', self.path, path)
+    local_path = os.path.normpath(local_path)
+    # Check that normalizing the path didn't ../ itself out of $(LOCAL_PATH)
+    # - i.e. that the resulting path is still inside the project tree. The
+    # path may legitimately have ended up containing just $(LOCAL_PATH), though,
+    # so we don't look for a slash.
+    assert local_path.startswith('$(LOCAL_PATH)'), (
+           'Path %s attempts to escape from gyp path %s !)' % (path, self.path))
+    return local_path
+
+
+  def ExpandInputRoot(self, template, expansion, dirname):
+    if '%(INPUT_ROOT)s' not in template and '%(INPUT_DIRNAME)s' not in template:
+      return template
+    path = template % {
+        'INPUT_ROOT': expansion,
+        'INPUT_DIRNAME': dirname,
+        }
+    return path
+
+
+def PerformBuild(data, configurations, params):
+  # The android backend only supports the default configuration.
+  options = params['options']
+  makefile = os.path.abspath(os.path.join(options.toplevel_dir,
+                                          'GypAndroid.mk'))
+  env = dict(os.environ)
+  env['ONE_SHOT_MAKEFILE'] = makefile
+  arguments = ['make', '-C', os.environ['ANDROID_BUILD_TOP'], 'gyp_all_modules']
+  print 'Building: %s' % arguments
+  subprocess.check_call(arguments, env=env)
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  options = params['options']
+  generator_flags = params.get('generator_flags', {})
+  builddir_name = generator_flags.get('output_dir', 'out')
+  limit_to_target_all = generator_flags.get('limit_to_target_all', False)
+  android_top_dir = os.environ.get('ANDROID_BUILD_TOP')
+  assert android_top_dir, '$ANDROID_BUILD_TOP not set; you need to run lunch.'
+
+  def CalculateMakefilePath(build_file, base_name):
+    """Determine where to write a Makefile for a given gyp file."""
+    # Paths in gyp files are relative to the .gyp file, but we want
+    # paths relative to the source root for the master makefile.  Grab
+    # the path of the .gyp file as the base to relativize against.
+    # E.g. "foo/bar" when we're constructing targets for "foo/bar/baz.gyp".
+    base_path = gyp.common.RelativePath(os.path.dirname(build_file),
+                                        options.depth)
+    # We write the file in the base_path directory.
+    output_file = os.path.join(options.depth, base_path, base_name)
+    assert not options.generator_output, (
+        'The Android backend does not support options.generator_output.')
+    base_path = gyp.common.RelativePath(os.path.dirname(build_file),
+                                        options.toplevel_dir)
+    return base_path, output_file
+
+  # TODO:  search for the first non-'Default' target.  This can go
+  # away when we add verification that all targets have the
+  # necessary configurations.
+  default_configuration = None
+  toolsets = set([target_dicts[target]['toolset'] for target in target_list])
+  for target in target_list:
+    spec = target_dicts[target]
+    if spec['default_configuration'] != 'Default':
+      default_configuration = spec['default_configuration']
+      break
+  if not default_configuration:
+    default_configuration = 'Default'
+
+  srcdir = '.'
+  makefile_name = 'GypAndroid' + options.suffix + '.mk'
+  makefile_path = os.path.join(options.toplevel_dir, makefile_name)
+  assert not options.generator_output, (
+      'The Android backend does not support options.generator_output.')
+  gyp.common.EnsureDirExists(makefile_path)
+  root_makefile = open(makefile_path, 'w')
+
+  root_makefile.write(header)
+
+  # We set LOCAL_PATH just once, here, to the top of the project tree. This
+  # allows all the other paths we use to be relative to the Android.mk file,
+  # as the Android build system expects.
+  root_makefile.write('\nLOCAL_PATH := $(call my-dir)\n')
+
+  # Find the list of targets that derive from the gyp file(s) being built.
+  needed_targets = set()
+  for build_file in params['build_files']:
+    for target in gyp.common.AllTargets(target_list, target_dicts, build_file):
+      needed_targets.add(target)
+
+  build_files = set()
+  include_list = set()
+  android_modules = {}
+  for qualified_target in target_list:
+    build_file, target, toolset = gyp.common.ParseQualifiedTarget(
+        qualified_target)
+    relative_build_file = gyp.common.RelativePath(build_file,
+                                                  options.toplevel_dir)
+    build_files.add(relative_build_file)
+    included_files = data[build_file]['included_files']
+    for included_file in included_files:
+      # The included_files entries are relative to the dir of the build file
+      # that included them, so we have to undo that and then make them relative
+      # to the root dir.
+      relative_include_file = gyp.common.RelativePath(
+          gyp.common.UnrelativePath(included_file, build_file),
+          options.toplevel_dir)
+      abs_include_file = os.path.abspath(relative_include_file)
+      # If the include file is from the ~/.gyp dir, we should use absolute path
+      # so that relocating the src dir doesn't break the path.
+      if (params['home_dot_gyp'] and
+          abs_include_file.startswith(params['home_dot_gyp'])):
+        build_files.add(abs_include_file)
+      else:
+        build_files.add(relative_include_file)
+
+    base_path, output_file = CalculateMakefilePath(build_file,
+        target + '.' + toolset + options.suffix + '.mk')
+
+    spec = target_dicts[qualified_target]
+    configs = spec['configurations']
+
+    part_of_all = (qualified_target in needed_targets and
+                   not int(spec.get('suppress_wildcard', False)))
+    if limit_to_target_all and not part_of_all:
+      continue
+
+    relative_target = gyp.common.QualifiedTarget(relative_build_file, target,
+                                                 toolset)
+    writer = AndroidMkWriter(android_top_dir)
+    android_module = writer.Write(qualified_target, relative_target, base_path,
+                                  output_file, spec, configs,
+                                  part_of_all=part_of_all)
+    if android_module in android_modules:
+      print ('ERROR: Android module names must be unique. The following '
+             'targets both generate Android module name %s.\n  %s\n  %s' %
+             (android_module, android_modules[android_module],
+              qualified_target))
+      return
+    android_modules[android_module] = qualified_target
+
+    # Our root_makefile lives at the source root.  Compute the relative path
+    # from there to the output_file for including.
+    mkfile_rel_path = gyp.common.RelativePath(output_file,
+                                              os.path.dirname(makefile_path))
+    include_list.add(mkfile_rel_path)
+
+  root_makefile.write('GYP_CONFIGURATION ?= %s\n' % default_configuration)
+
+  # Write out the sorted list of includes.
+  root_makefile.write('\n')
+  for include_file in sorted(include_list):
+    root_makefile.write('include $(LOCAL_PATH)/' + include_file + '\n')
+  root_makefile.write('\n')
+
+  root_makefile.write(SHARED_FOOTER)
+
+  root_makefile.close()
diff --git a/deps/gyp/pylib/gyp/generator/cmake.py b/deps/gyp/pylib/gyp/generator/cmake.py
new file mode 100644
index 0000000000..10d015ee83
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/cmake.py
@@ -0,0 +1,1143 @@
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""cmake output module
+
+This module is under development and should be considered experimental.
+
+This module produces cmake (2.8.8+) input as its output. One CMakeLists.txt is
+created for each configuration.
+
+This module's original purpose was to support editing in IDEs like KDevelop
+which use CMake for project management. It is also possible to use CMake to
+generate projects for other IDEs such as eclipse cdt and code::blocks. QtCreator
+will convert the CMakeLists.txt to a code::blocks cbp for the editor to read,
+but build using CMake. As a result QtCreator editor is unaware of compiler
+defines. The generated CMakeLists.txt can also be used to build on Linux. There
+is currently no support for building on platforms other than Linux.
+
+The generated CMakeLists.txt should properly compile all projects. However,
+there is a mismatch between gyp and cmake with regard to linking. All attempts
+are made to work around this, but CMake sometimes sees -Wl,--start-group as a
+library and incorrectly repeats it. As a result the output of this generator
+should not be relied on for building.
+
+When using with kdevelop, use version 4.4+. Previous versions of kdevelop will
+not be able to find the header file directories described in the generated
+CMakeLists.txt file.
+"""
+
+import multiprocessing
+import os
+import signal
+import string
+import subprocess
+import gyp.common
+
+generator_default_variables = {
+  'EXECUTABLE_PREFIX': '',
+  'EXECUTABLE_SUFFIX': '',
+  'STATIC_LIB_PREFIX': 'lib',
+  'STATIC_LIB_SUFFIX': '.a',
+  'SHARED_LIB_PREFIX': 'lib',
+  'SHARED_LIB_SUFFIX': '.so',
+  'SHARED_LIB_DIR': '${builddir}/lib.${TOOLSET}',
+  'LIB_DIR': '${obj}.${TOOLSET}',
+  'INTERMEDIATE_DIR': '${obj}.${TOOLSET}/${TARGET}/geni',
+  'SHARED_INTERMEDIATE_DIR': '${obj}/gen',
+  'PRODUCT_DIR': '${builddir}',
+  'RULE_INPUT_PATH': '${RULE_INPUT_PATH}',
+  'RULE_INPUT_DIRNAME': '${RULE_INPUT_DIRNAME}',
+  'RULE_INPUT_NAME': '${RULE_INPUT_NAME}',
+  'RULE_INPUT_ROOT': '${RULE_INPUT_ROOT}',
+  'RULE_INPUT_EXT': '${RULE_INPUT_EXT}',
+  'CONFIGURATION_NAME': '${configuration}',
+}
+
+FULL_PATH_VARS = ('${CMAKE_SOURCE_DIR}', '${builddir}', '${obj}')
+
+generator_supports_multiple_toolsets = True
+generator_wants_static_library_dependencies_adjusted = True
+
+COMPILABLE_EXTENSIONS = {
+  '.c': 'cc',
+  '.cc': 'cxx',
+  '.cpp': 'cxx',
+  '.cxx': 'cxx',
+  '.s': 's', # cc
+  '.S': 's', # cc
+}
+
+
+def RemovePrefix(a, prefix):
+  """Returns 'a' without 'prefix' if it starts with 'prefix'."""
+  return a[len(prefix):] if a.startswith(prefix) else a
+
+
+def CalculateVariables(default_variables, params):
+  """Calculate additional variables for use in the build (called by gyp)."""
+  default_variables.setdefault('OS', gyp.common.GetFlavor(params))
+
+
+def Compilable(filename):
+  """Return true if the file is compilable (should be in OBJS)."""
+  return any(filename.endswith(e) for e in COMPILABLE_EXTENSIONS)
+
+
+def Linkable(filename):
+  """Return true if the file is linkable (should be on the link line)."""
+  return filename.endswith('.o')
+
+
+def NormjoinPathForceCMakeSource(base_path, rel_path):
+  """Resolves rel_path against base_path and returns the result.
+
+  If rel_path is an absolute path it is returned unchanged.
+  Otherwise it is resolved against base_path and normalized.
+  If the result is a relative path, it is forced to be relative to the
+  CMakeLists.txt.
+  """
+  if os.path.isabs(rel_path):
+    return rel_path
+  if any([rel_path.startswith(var) for var in FULL_PATH_VARS]):
+    return rel_path
+  # TODO: do we need to check base_path for absolute variables as well?
+  return os.path.join('${CMAKE_SOURCE_DIR}',
+                      os.path.normpath(os.path.join(base_path, rel_path)))
+
+
+def NormjoinPath(base_path, rel_path):
+  """Resolves rel_path against base_path and returns the result.
+  TODO: what is this really used for?
+  If rel_path begins with '$' it is returned unchanged.
+  Otherwise it is resolved against base_path if relative, then normalized.
+  """
+  if rel_path.startswith('$') and not rel_path.startswith('${configuration}'):
+    return rel_path
+  return os.path.normpath(os.path.join(base_path, rel_path))
+
+
+def CMakeStringEscape(a):
+  """Escapes the string 'a' for use inside a CMake string.
+
+  This means escaping
+  '\' otherwise it may be seen as modifying the next character
+  '"' otherwise it will end the string
+  ';' otherwise the string becomes a list
+
+  The following do not need to be escaped
+  '#' when the lexer is in string state, this does not start a comment
+
+  The following are yet unknown
+  '$' generator variables (like ${obj}) must not be escaped,
+      but text $ should be escaped
+      what is wanted is to know which $ come from generator variables
+  """
+  return a.replace('\\', '\\\\').replace(';', '\\;').replace('"', '\\"')
+
+
+def SetFileProperty(output, source_name, property_name, values, sep):
+  """Given a set of source file, sets the given property on them."""
+  output.write('set_source_files_properties(')
+  output.write(source_name)
+  output.write(' PROPERTIES ')
+  output.write(property_name)
+  output.write(' "')
+  for value in values:
+    output.write(CMakeStringEscape(value))
+    output.write(sep)
+  output.write('")\n')
+
+
+def SetFilesProperty(output, source_names, property_name, values, sep):
+  """Given a set of source files, sets the given property on them."""
+  output.write('set_source_files_properties(\n')
+  for source_name in source_names:
+    output.write('  ')
+    output.write(source_name)
+    output.write('\n')
+  output.write(' PROPERTIES\n  ')
+  output.write(property_name)
+  output.write(' "')
+  for value in values:
+    output.write(CMakeStringEscape(value))
+    output.write(sep)
+  output.write('"\n)\n')
+
+
+def SetTargetProperty(output, target_name, property_name, values, sep=''):
+  """Given a target, sets the given property."""
+  output.write('set_target_properties(')
+  output.write(target_name)
+  output.write(' PROPERTIES ')
+  output.write(property_name)
+  output.write(' "')
+  for value in values:
+    output.write(CMakeStringEscape(value))
+    output.write(sep)
+  output.write('")\n')
+
+
+def SetVariable(output, variable_name, value):
+  """Sets a CMake variable."""
+  output.write('set(')
+  output.write(variable_name)
+  output.write(' "')
+  output.write(CMakeStringEscape(value))
+  output.write('")\n')
+
+
+def SetVariableList(output, variable_name, values):
+  """Sets a CMake variable to a list."""
+  if not values:
+    return SetVariable(output, variable_name, "")
+  if len(values) == 1:
+    return SetVariable(output, variable_name, values[0])
+  output.write('list(APPEND ')
+  output.write(variable_name)
+  output.write('\n  "')
+  output.write('"\n  "'.join([CMakeStringEscape(value) for value in values]))
+  output.write('")\n')
+
+
+def UnsetVariable(output, variable_name):
+  """Unsets a CMake variable."""
+  output.write('unset(')
+  output.write(variable_name)
+  output.write(')\n')
+
+
+def WriteVariable(output, variable_name, prepend=None):
+  if prepend:
+    output.write(prepend)
+  output.write('${')
+  output.write(variable_name)
+  output.write('}')
+
+
+class CMakeTargetType:
+  def __init__(self, command, modifier, property_modifier):
+    self.command = command
+    self.modifier = modifier
+    self.property_modifier = property_modifier
+
+
+cmake_target_type_from_gyp_target_type = {
+  'executable': CMakeTargetType('add_executable', None, 'RUNTIME'),
+  'static_library': CMakeTargetType('add_library', 'STATIC', 'ARCHIVE'),
+  'shared_library': CMakeTargetType('add_library', 'SHARED', 'LIBRARY'),
+  'loadable_module': CMakeTargetType('add_library', 'MODULE', 'LIBRARY'),
+  'none': CMakeTargetType('add_custom_target', 'SOURCES', None),
+}
+
+
+def StringToCMakeTargetName(a):
+  """Converts the given string 'a' to a valid CMake target name.
+
+  All invalid characters are replaced by '_'.
+  Invalid for cmake: ' ', '/', '(', ')'
+  Invalid for make: ':'
+  Invalid for unknown reasons but cause failures: '.'
+  """
+  return a.translate(string.maketrans(' /():.', '______'))
+
+
+def WriteActions(target_name, actions, extra_sources, extra_deps,
+                 path_to_gyp, output):
+  """Write CMake for the 'actions' in the target.
+
+  Args:
+    target_name: the name of the CMake target being generated.
+    actions: the Gyp 'actions' dict for this target.
+    extra_sources: [(<cmake_src>, <src>)] to append with generated source files.
+    extra_deps: [<cmake_taget>] to append with generated targets.
+    path_to_gyp: relative path from CMakeLists.txt being generated to
+        the Gyp file in which the target being generated is defined.
+  """
+  for action in actions:
+    action_name = StringToCMakeTargetName(action['action_name'])
+    action_target_name = '%s__%s' % (target_name, action_name)
+
+    inputs = action['inputs']
+    inputs_name = action_target_name + '__input'
+    SetVariableList(output, inputs_name,
+        [NormjoinPathForceCMakeSource(path_to_gyp, dep) for dep in inputs])
+
+    outputs = action['outputs']
+    cmake_outputs = [NormjoinPathForceCMakeSource(path_to_gyp, out)
+                     for out in outputs]
+    outputs_name = action_target_name + '__output'
+    SetVariableList(output, outputs_name, cmake_outputs)
+
+    # Build up a list of outputs.
+    # Collect the output dirs we'll need.
+    dirs = set(dir for dir in (os.path.dirname(o) for o in outputs) if dir)
+
+    if int(action.get('process_outputs_as_sources', False)):
+      extra_sources.extend(zip(cmake_outputs, outputs))
+
+    # add_custom_command
+    output.write('add_custom_command(OUTPUT ')
+    WriteVariable(output, outputs_name)
+    output.write('\n')
+
+    if len(dirs) > 0:
+      for directory in dirs:
+        output.write('  COMMAND ${CMAKE_COMMAND} -E make_directory ')
+        output.write(directory)
+        output.write('\n')
+
+    output.write('  COMMAND ')
+    output.write(gyp.common.EncodePOSIXShellList(action['action']))
+    output.write('\n')
+
+    output.write('  DEPENDS ')
+    WriteVariable(output, inputs_name)
+    output.write('\n')
+
+    output.write('  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/')
+    output.write(path_to_gyp)
+    output.write('\n')
+
+    output.write('  COMMENT ')
+    if 'message' in action:
+      output.write(action['message'])
+    else:
+      output.write(action_target_name)
+    output.write('\n')
+
+    output.write('  VERBATIM\n')
+    output.write(')\n')
+
+    # add_custom_target
+    output.write('add_custom_target(')
+    output.write(action_target_name)
+    output.write('\n  DEPENDS ')
+    WriteVariable(output, outputs_name)
+    output.write('\n  SOURCES ')
+    WriteVariable(output, inputs_name)
+    output.write('\n)\n')
+
+    extra_deps.append(action_target_name)
+
+
+def NormjoinRulePathForceCMakeSource(base_path, rel_path, rule_source):
+  if rel_path.startswith(("${RULE_INPUT_PATH}","${RULE_INPUT_DIRNAME}")):
+    if any([rule_source.startswith(var) for var in FULL_PATH_VARS]):
+      return rel_path
+  return NormjoinPathForceCMakeSource(base_path, rel_path)
+
+
+def WriteRules(target_name, rules, extra_sources, extra_deps,
+               path_to_gyp, output):
+  """Write CMake for the 'rules' in the target.
+
+  Args:
+    target_name: the name of the CMake target being generated.
+    actions: the Gyp 'actions' dict for this target.
+    extra_sources: [(<cmake_src>, <src>)] to append with generated source files.
+    extra_deps: [<cmake_taget>] to append with generated targets.
+    path_to_gyp: relative path from CMakeLists.txt being generated to
+        the Gyp file in which the target being generated is defined.
+  """
+  for rule in rules:
+    rule_name = StringToCMakeTargetName(target_name + '__' + rule['rule_name'])
+
+    inputs = rule.get('inputs', [])
+    inputs_name = rule_name + '__input'
+    SetVariableList(output, inputs_name,
+        [NormjoinPathForceCMakeSource(path_to_gyp, dep) for dep in inputs])
+    outputs = rule['outputs']
+    var_outputs = []
+
+    for count, rule_source in enumerate(rule.get('rule_sources', [])):
+      action_name = rule_name + '_' + str(count)
+
+      rule_source_dirname, rule_source_basename = os.path.split(rule_source)
+      rule_source_root, rule_source_ext = os.path.splitext(rule_source_basename)
+
+      SetVariable(output, 'RULE_INPUT_PATH', rule_source)
+      SetVariable(output, 'RULE_INPUT_DIRNAME', rule_source_dirname)
+      SetVariable(output, 'RULE_INPUT_NAME', rule_source_basename)
+      SetVariable(output, 'RULE_INPUT_ROOT', rule_source_root)
+      SetVariable(output, 'RULE_INPUT_EXT', rule_source_ext)
+
+      # Build up a list of outputs.
+      # Collect the output dirs we'll need.
+      dirs = set(dir for dir in (os.path.dirname(o) for o in outputs) if dir)
+
+      # Create variables for the output, as 'local' variable will be unset.
+      these_outputs = []
+      for output_index, out in enumerate(outputs):
+        output_name = action_name + '_' + str(output_index)
+        SetVariable(output, output_name,
+                     NormjoinRulePathForceCMakeSource(path_to_gyp, out,
+                                                      rule_source))
+        if int(rule.get('process_outputs_as_sources', False)):
+          extra_sources.append(('${' + output_name + '}', out))
+        these_outputs.append('${' + output_name + '}')
+        var_outputs.append('${' + output_name + '}')
+
+      # add_custom_command
+      output.write('add_custom_command(OUTPUT\n')
+      for out in these_outputs:
+        output.write('  ')
+        output.write(out)
+        output.write('\n')
+
+      for directory in dirs:
+        output.write('  COMMAND ${CMAKE_COMMAND} -E make_directory ')
+        output.write(directory)
+        output.write('\n')
+
+      output.write('  COMMAND ')
+      output.write(gyp.common.EncodePOSIXShellList(rule['action']))
+      output.write('\n')
+
+      output.write('  DEPENDS ')
+      WriteVariable(output, inputs_name)
+      output.write(' ')
+      output.write(NormjoinPath(path_to_gyp, rule_source))
+      output.write('\n')
+
+      # CMAKE_SOURCE_DIR is where the CMakeLists.txt lives.
+      # The cwd is the current build directory.
+      output.write('  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/')
+      output.write(path_to_gyp)
+      output.write('\n')
+
+      output.write('  COMMENT ')
+      if 'message' in rule:
+        output.write(rule['message'])
+      else:
+        output.write(action_name)
+      output.write('\n')
+
+      output.write('  VERBATIM\n')
+      output.write(')\n')
+
+      UnsetVariable(output, 'RULE_INPUT_PATH')
+      UnsetVariable(output, 'RULE_INPUT_DIRNAME')
+      UnsetVariable(output, 'RULE_INPUT_NAME')
+      UnsetVariable(output, 'RULE_INPUT_ROOT')
+      UnsetVariable(output, 'RULE_INPUT_EXT')
+
+    # add_custom_target
+    output.write('add_custom_target(')
+    output.write(rule_name)
+    output.write(' DEPENDS\n')
+    for out in var_outputs:
+      output.write('  ')
+      output.write(out)
+      output.write('\n')
+    output.write('SOURCES ')
+    WriteVariable(output, inputs_name)
+    output.write('\n')
+    for rule_source in rule.get('rule_sources', []):
+      output.write('  ')
+      output.write(NormjoinPath(path_to_gyp, rule_source))
+      output.write('\n')
+    output.write(')\n')
+
+    extra_deps.append(rule_name)
+
+
+def WriteCopies(target_name, copies, extra_deps, path_to_gyp, output):
+  """Write CMake for the 'copies' in the target.
+
+  Args:
+    target_name: the name of the CMake target being generated.
+    actions: the Gyp 'actions' dict for this target.
+    extra_deps: [<cmake_taget>] to append with generated targets.
+    path_to_gyp: relative path from CMakeLists.txt being generated to
+        the Gyp file in which the target being generated is defined.
+  """
+  copy_name = target_name + '__copies'
+
+  # CMake gets upset with custom targets with OUTPUT which specify no output.
+  have_copies = any(copy['files'] for copy in copies)
+  if not have_copies:
+    output.write('add_custom_target(')
+    output.write(copy_name)
+    output.write(')\n')
+    extra_deps.append(copy_name)
+    return
+
+  class Copy:
+    def __init__(self, ext, command):
+      self.cmake_inputs = []
+      self.cmake_outputs = []
+      self.gyp_inputs = []
+      self.gyp_outputs = []
+      self.ext = ext
+      self.inputs_name = None
+      self.outputs_name = None
+      self.command = command
+
+  file_copy = Copy('', 'copy')
+  dir_copy = Copy('_dirs', 'copy_directory')
+
+  for copy in copies:
+    files = copy['files']
+    destination = copy['destination']
+    for src in files:
+      path = os.path.normpath(src)
+      basename = os.path.split(path)[1]
+      dst = os.path.join(destination, basename)
+
+      copy = file_copy if os.path.basename(src) else dir_copy
+
+      copy.cmake_inputs.append(NormjoinPath(path_to_gyp, src))
+      copy.cmake_outputs.append(NormjoinPathForceCMakeSource(path_to_gyp, dst))
+      copy.gyp_inputs.append(src)
+      copy.gyp_outputs.append(dst)
+
+  for copy in (file_copy, dir_copy):
+    if copy.cmake_inputs:
+      copy.inputs_name = copy_name + '__input' + copy.ext
+      SetVariableList(output, copy.inputs_name, copy.cmake_inputs)
+
+      copy.outputs_name = copy_name + '__output' + copy.ext
+      SetVariableList(output, copy.outputs_name, copy.cmake_outputs)
+
+  # add_custom_command
+  output.write('add_custom_command(\n')
+
+  output.write('OUTPUT')
+  for copy in (file_copy, dir_copy):
+    if copy.outputs_name:
+      WriteVariable(output, copy.outputs_name, ' ')
+  output.write('\n')
+
+  for copy in (file_copy, dir_copy):
+    for src, dst in zip(copy.gyp_inputs, copy.gyp_outputs):
+      # 'cmake -E copy src dst' will create the 'dst' directory if needed.
+      output.write('COMMAND ${CMAKE_COMMAND} -E %s ' % copy.command)
+      output.write(src)
+      output.write(' ')
+      output.write(dst)
+      output.write("\n")
+
+  output.write('DEPENDS')
+  for copy in (file_copy, dir_copy):
+    if copy.inputs_name:
+      WriteVariable(output, copy.inputs_name, ' ')
+  output.write('\n')
+
+  output.write('WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/')
+  output.write(path_to_gyp)
+  output.write('\n')
+
+  output.write('COMMENT Copying for ')
+  output.write(target_name)
+  output.write('\n')
+
+  output.write('VERBATIM\n')
+  output.write(')\n')
+
+  # add_custom_target
+  output.write('add_custom_target(')
+  output.write(copy_name)
+  output.write('\n  DEPENDS')
+  for copy in (file_copy, dir_copy):
+    if copy.outputs_name:
+      WriteVariable(output, copy.outputs_name, ' ')
+  output.write('\n  SOURCES')
+  if file_copy.inputs_name:
+    WriteVariable(output, file_copy.inputs_name, ' ')
+  output.write('\n)\n')
+
+  extra_deps.append(copy_name)
+
+
+def CreateCMakeTargetBaseName(qualified_target):
+  """This is the name we would like the target to have."""
+  _, gyp_target_name, gyp_target_toolset = (
+      gyp.common.ParseQualifiedTarget(qualified_target))
+  cmake_target_base_name = gyp_target_name
+  if gyp_target_toolset and gyp_target_toolset != 'target':
+    cmake_target_base_name += '_' + gyp_target_toolset
+  return StringToCMakeTargetName(cmake_target_base_name)
+
+
+def CreateCMakeTargetFullName(qualified_target):
+  """An unambiguous name for the target."""
+  gyp_file, gyp_target_name, gyp_target_toolset = (
+      gyp.common.ParseQualifiedTarget(qualified_target))
+  cmake_target_full_name = gyp_file + ':' + gyp_target_name
+  if gyp_target_toolset and gyp_target_toolset != 'target':
+    cmake_target_full_name += '_' + gyp_target_toolset
+  return StringToCMakeTargetName(cmake_target_full_name)
+
+
+class CMakeNamer(object):
+  """Converts Gyp target names into CMake target names.
+
+  CMake requires that target names be globally unique. One way to ensure
+  this is to fully qualify the names of the targets. Unfortunatly, this
+  ends up with all targets looking like "chrome_chrome_gyp_chrome" instead
+  of just "chrome". If this generator were only interested in building, it
+  would be possible to fully qualify all target names, then create
+  unqualified target names which depend on all qualified targets which
+  should have had that name. This is more or less what the 'make' generator
+  does with aliases. However, one goal of this generator is to create CMake
+  files for use with IDEs, and fully qualified names are not as user
+  friendly.
+
+  Since target name collision is rare, we do the above only when required.
+
+  Toolset variants are always qualified from the base, as this is required for
+  building. However, it also makes sense for an IDE, as it is possible for
+  defines to be different.
+  """
+  def __init__(self, target_list):
+    self.cmake_target_base_names_conficting = set()
+
+    cmake_target_base_names_seen = set()
+    for qualified_target in target_list:
+      cmake_target_base_name = CreateCMakeTargetBaseName(qualified_target)
+
+      if cmake_target_base_name not in cmake_target_base_names_seen:
+        cmake_target_base_names_seen.add(cmake_target_base_name)
+      else:
+        self.cmake_target_base_names_conficting.add(cmake_target_base_name)
+
+  def CreateCMakeTargetName(self, qualified_target):
+    base_name = CreateCMakeTargetBaseName(qualified_target)
+    if base_name in self.cmake_target_base_names_conficting:
+      return CreateCMakeTargetFullName(qualified_target)
+    return base_name
+
+
+def WriteTarget(namer, qualified_target, target_dicts, build_dir, config_to_use,
+                options, generator_flags, all_qualified_targets, output):
+
+  # The make generator does this always.
+  # TODO: It would be nice to be able to tell CMake all dependencies.
+  circular_libs = generator_flags.get('circular', True)
+
+  if not generator_flags.get('standalone', False):
+    output.write('\n#')
+    output.write(qualified_target)
+    output.write('\n')
+
+  gyp_file, _, _ = gyp.common.ParseQualifiedTarget(qualified_target)
+  rel_gyp_file = gyp.common.RelativePath(gyp_file, options.toplevel_dir)
+  rel_gyp_dir = os.path.dirname(rel_gyp_file)
+
+  # Relative path from build dir to top dir.
+  build_to_top = gyp.common.InvertRelativePath(build_dir, options.toplevel_dir)
+  # Relative path from build dir to gyp dir.
+  build_to_gyp = os.path.join(build_to_top, rel_gyp_dir)
+
+  path_from_cmakelists_to_gyp = build_to_gyp
+
+  spec = target_dicts.get(qualified_target, {})
+  config = spec.get('configurations', {}).get(config_to_use, {})
+
+  target_name = spec.get('target_name', '<missing target name>')
+  target_type = spec.get('type', '<missing target type>')
+  target_toolset = spec.get('toolset')
+
+  SetVariable(output, 'TARGET', target_name)
+  SetVariable(output, 'TOOLSET', target_toolset)
+
+  cmake_target_name = namer.CreateCMakeTargetName(qualified_target)
+
+  extra_sources = []
+  extra_deps = []
+
+  # Actions must come first, since they can generate more OBJs for use below.
+  if 'actions' in spec:
+    WriteActions(cmake_target_name, spec['actions'], extra_sources, extra_deps,
+                 path_from_cmakelists_to_gyp, output)
+
+  # Rules must be early like actions.
+  if 'rules' in spec:
+    WriteRules(cmake_target_name, spec['rules'], extra_sources, extra_deps,
+               path_from_cmakelists_to_gyp, output)
+
+  # Copies
+  if 'copies' in spec:
+    WriteCopies(cmake_target_name, spec['copies'], extra_deps,
+                path_from_cmakelists_to_gyp, output)
+
+  # Target and sources
+  srcs = spec.get('sources', [])
+
+  # Gyp separates the sheep from the goats based on file extensions.
+  def partition(l, p):
+    return reduce(lambda x, e: x[not p(e)].append(e) or x, l, ([], []))
+  compilable_srcs, other_srcs = partition(srcs, Compilable)
+
+  # CMake gets upset when executable targets provide no sources.
+  if target_type == 'executable' and not compilable_srcs and not extra_sources:
+    print ('Executable %s has no complilable sources, treating as "none".' %
+                       target_name                                         )
+    target_type = 'none'
+
+  cmake_target_type = cmake_target_type_from_gyp_target_type.get(target_type)
+  if cmake_target_type is None:
+    print ('Target %s has unknown target type %s, skipping.' %
+          (        target_name,               target_type  ) )
+    return
+
+  other_srcs_name = None
+  if other_srcs:
+    other_srcs_name = cmake_target_name + '__other_srcs'
+    SetVariableList(output, other_srcs_name,
+        [NormjoinPath(path_from_cmakelists_to_gyp, src) for src in other_srcs])
+
+  # CMake is opposed to setting linker directories and considers the practice
+  # of setting linker directories dangerous. Instead, it favors the use of
+  # find_library and passing absolute paths to target_link_libraries.
+  # However, CMake does provide the command link_directories, which adds
+  # link directories to targets defined after it is called.
+  # As a result, link_directories must come before the target definition.
+  # CMake unfortunately has no means of removing entries from LINK_DIRECTORIES.
+  library_dirs = config.get('library_dirs')
+  if library_dirs is not None:
+    output.write('link_directories(')
+    for library_dir in library_dirs:
+      output.write(' ')
+      output.write(NormjoinPath(path_from_cmakelists_to_gyp, library_dir))
+      output.write('\n')
+    output.write(')\n')
+
+  output.write(cmake_target_type.command)
+  output.write('(')
+  output.write(cmake_target_name)
+
+  if cmake_target_type.modifier is not None:
+    output.write(' ')
+    output.write(cmake_target_type.modifier)
+
+  if other_srcs_name:
+    WriteVariable(output, other_srcs_name, ' ')
+
+  output.write('\n')
+
+  for src in compilable_srcs:
+    output.write('  ')
+    output.write(NormjoinPath(path_from_cmakelists_to_gyp, src))
+    output.write('\n')
+  for extra_source in extra_sources:
+    output.write('  ')
+    src, _ = extra_source
+    output.write(NormjoinPath(path_from_cmakelists_to_gyp, src))
+    output.write('\n')
+
+  output.write(')\n')
+
+  # Output name and location.
+  if target_type != 'none':
+    # Mark uncompiled sources as uncompiled.
+    if other_srcs_name:
+      output.write('set_source_files_properties(')
+      WriteVariable(output, other_srcs_name, '')
+      output.write(' PROPERTIES HEADER_FILE_ONLY "TRUE")\n')
+
+    # Output directory
+    target_output_directory = spec.get('product_dir')
+    if target_output_directory is None:
+      if target_type in ('executable', 'loadable_module'):
+        target_output_directory = generator_default_variables['PRODUCT_DIR']
+      elif target_type in ('shared_library'):
+        target_output_directory = '${builddir}/lib.${TOOLSET}'
+      elif spec.get('standalone_static_library', False):
+        target_output_directory = generator_default_variables['PRODUCT_DIR']
+      else:
+        base_path = gyp.common.RelativePath(os.path.dirname(gyp_file),
+                                            options.toplevel_dir)
+        target_output_directory = '${obj}.${TOOLSET}'
+        target_output_directory = (
+            os.path.join(target_output_directory, base_path))
+
+    cmake_target_output_directory = NormjoinPathForceCMakeSource(
+                                        path_from_cmakelists_to_gyp,
+                                        target_output_directory)
+    SetTargetProperty(output,
+        cmake_target_name,
+        cmake_target_type.property_modifier + '_OUTPUT_DIRECTORY',
+        cmake_target_output_directory)
+
+    # Output name
+    default_product_prefix = ''
+    default_product_name = target_name
+    default_product_ext = ''
+    if target_type == 'static_library':
+      static_library_prefix = generator_default_variables['STATIC_LIB_PREFIX']
+      default_product_name = RemovePrefix(default_product_name,
+                                          static_library_prefix)
+      default_product_prefix = static_library_prefix
+      default_product_ext = generator_default_variables['STATIC_LIB_SUFFIX']
+
+    elif target_type in ('loadable_module', 'shared_library'):
+      shared_library_prefix = generator_default_variables['SHARED_LIB_PREFIX']
+      default_product_name = RemovePrefix(default_product_name,
+                                          shared_library_prefix)
+      default_product_prefix = shared_library_prefix
+      default_product_ext = generator_default_variables['SHARED_LIB_SUFFIX']
+
+    elif target_type != 'executable':
+      print ('ERROR: What output file should be generated?',
+              'type', target_type, 'target', target_name)
+
+    product_prefix = spec.get('product_prefix', default_product_prefix)
+    product_name = spec.get('product_name', default_product_name)
+    product_ext = spec.get('product_extension')
+    if product_ext:
+      product_ext = '.' + product_ext
+    else:
+      product_ext = default_product_ext
+
+    SetTargetProperty(output, cmake_target_name, 'PREFIX', product_prefix)
+    SetTargetProperty(output, cmake_target_name,
+                        cmake_target_type.property_modifier + '_OUTPUT_NAME',
+                        product_name)
+    SetTargetProperty(output, cmake_target_name, 'SUFFIX', product_ext)
+
+    # Make the output of this target referenceable as a source.
+    cmake_target_output_basename = product_prefix + product_name + product_ext
+    cmake_target_output = os.path.join(cmake_target_output_directory,
+                                       cmake_target_output_basename)
+    SetFileProperty(output, cmake_target_output, 'GENERATED', ['TRUE'], '')
+
+  # Let CMake know if the 'all' target should depend on this target.
+  exclude_from_all = ('TRUE' if qualified_target not in all_qualified_targets
+                             else 'FALSE')
+  SetTargetProperty(output, cmake_target_name,
+                      'EXCLUDE_FROM_ALL', exclude_from_all)
+  for extra_target_name in extra_deps:
+    SetTargetProperty(output, extra_target_name,
+                        'EXCLUDE_FROM_ALL', exclude_from_all)
+
+  # Includes
+  includes = config.get('include_dirs')
+  if includes:
+    # This (target include directories) is what requires CMake 2.8.8
+    includes_name = cmake_target_name + '__include_dirs'
+    SetVariableList(output, includes_name,
+        [NormjoinPathForceCMakeSource(path_from_cmakelists_to_gyp, include)
+         for include in includes])
+    output.write('set_property(TARGET ')
+    output.write(cmake_target_name)
+    output.write(' APPEND PROPERTY INCLUDE_DIRECTORIES ')
+    WriteVariable(output, includes_name, '')
+    output.write(')\n')
+
+  # Defines
+  defines = config.get('defines')
+  if defines is not None:
+    SetTargetProperty(output,
+                        cmake_target_name,
+                        'COMPILE_DEFINITIONS',
+                        defines,
+                        ';')
+
+  # Compile Flags - http://www.cmake.org/Bug/view.php?id=6493
+  # CMake currently does not have target C and CXX flags.
+  # So, instead of doing...
+
+  # cflags_c = config.get('cflags_c')
+  # if cflags_c is not None:
+  #   SetTargetProperty(output, cmake_target_name,
+  #                       'C_COMPILE_FLAGS', cflags_c, ' ')
+
+  # cflags_cc = config.get('cflags_cc')
+  # if cflags_cc is not None:
+  #   SetTargetProperty(output, cmake_target_name,
+  #                       'CXX_COMPILE_FLAGS', cflags_cc, ' ')
+
+  # Instead we must...
+  s_sources = []
+  c_sources = []
+  cxx_sources = []
+  for src in srcs:
+    _, ext = os.path.splitext(src)
+    src_type = COMPILABLE_EXTENSIONS.get(ext, None)
+
+    if src_type == 's':
+      s_sources.append(NormjoinPath(path_from_cmakelists_to_gyp, src))
+
+    if src_type == 'cc':
+      c_sources.append(NormjoinPath(path_from_cmakelists_to_gyp, src))
+
+    if src_type == 'cxx':
+      cxx_sources.append(NormjoinPath(path_from_cmakelists_to_gyp, src))
+
+  for extra_source in extra_sources:
+    src, real_source = extra_source
+    _, ext = os.path.splitext(real_source)
+    src_type = COMPILABLE_EXTENSIONS.get(ext, None)
+
+    if src_type == 's':
+      s_sources.append(NormjoinPath(path_from_cmakelists_to_gyp, src))
+
+    if src_type == 'cc':
+      c_sources.append(NormjoinPath(path_from_cmakelists_to_gyp, src))
+
+    if src_type == 'cxx':
+      cxx_sources.append(NormjoinPath(path_from_cmakelists_to_gyp, src))
+
+  cflags = config.get('cflags', [])
+  cflags_c = config.get('cflags_c', [])
+  cflags_cxx = config.get('cflags_cc', [])
+  if c_sources and not (s_sources or cxx_sources):
+    flags = []
+    flags.extend(cflags)
+    flags.extend(cflags_c)
+    SetTargetProperty(output, cmake_target_name, 'COMPILE_FLAGS', flags, ' ')
+
+  elif cxx_sources and not (s_sources or c_sources):
+    flags = []
+    flags.extend(cflags)
+    flags.extend(cflags_cxx)
+    SetTargetProperty(output, cmake_target_name, 'COMPILE_FLAGS', flags, ' ')
+
+  else:
+    if s_sources and cflags:
+      SetFilesProperty(output, s_sources, 'COMPILE_FLAGS', cflags, ' ')
+
+    if c_sources and (cflags or cflags_c):
+      flags = []
+      flags.extend(cflags)
+      flags.extend(cflags_c)
+      SetFilesProperty(output, c_sources, 'COMPILE_FLAGS', flags, ' ')
+
+    if cxx_sources and (cflags or cflags_cxx):
+      flags = []
+      flags.extend(cflags)
+      flags.extend(cflags_cxx)
+      SetFilesProperty(output, cxx_sources, 'COMPILE_FLAGS', flags, ' ')
+
+  # Have assembly link as c if there are no other files
+  if not c_sources and not cxx_sources and s_sources:
+    SetTargetProperty(output, cmake_target_name, 'LINKER_LANGUAGE', ['C'])
+
+  # Linker flags
+  ldflags = config.get('ldflags')
+  if ldflags is not None:
+    SetTargetProperty(output, cmake_target_name, 'LINK_FLAGS', ldflags, ' ')
+
+  # Note on Dependencies and Libraries:
+  # CMake wants to handle link order, resolving the link line up front.
+  # Gyp does not retain or enforce specifying enough information to do so.
+  # So do as other gyp generators and use --start-group and --end-group.
+  # Give CMake as little information as possible so that it doesn't mess it up.
+
+  # Dependencies
+  rawDeps = spec.get('dependencies', [])
+
+  static_deps = []
+  shared_deps = []
+  other_deps = []
+  for rawDep in rawDeps:
+    dep_cmake_name = namer.CreateCMakeTargetName(rawDep)
+    dep_spec = target_dicts.get(rawDep, {})
+    dep_target_type = dep_spec.get('type', None)
+
+    if dep_target_type == 'static_library':
+      static_deps.append(dep_cmake_name)
+    elif dep_target_type ==  'shared_library':
+      shared_deps.append(dep_cmake_name)
+    else:
+      other_deps.append(dep_cmake_name)
+
+  # ensure all external dependencies are complete before internal dependencies
+  # extra_deps currently only depend on their own deps, so otherwise run early
+  if static_deps or shared_deps or other_deps:
+    for extra_dep in extra_deps:
+      output.write('add_dependencies(')
+      output.write(extra_dep)
+      output.write('\n')
+      for deps in (static_deps, shared_deps, other_deps):
+        for dep in gyp.common.uniquer(deps):
+          output.write('  ')
+          output.write(dep)
+          output.write('\n')
+      output.write(')\n')
+
+  linkable = target_type in ('executable', 'loadable_module', 'shared_library')
+  other_deps.extend(extra_deps)
+  if other_deps or (not linkable and (static_deps or shared_deps)):
+    output.write('add_dependencies(')
+    output.write(cmake_target_name)
+    output.write('\n')
+    for dep in gyp.common.uniquer(other_deps):
+      output.write('  ')
+      output.write(dep)
+      output.write('\n')
+    if not linkable:
+      for deps in (static_deps, shared_deps):
+        for lib_dep in gyp.common.uniquer(deps):
+          output.write('  ')
+          output.write(lib_dep)
+          output.write('\n')
+    output.write(')\n')
+
+  # Libraries
+  if linkable:
+    external_libs = [lib for lib in spec.get('libraries', []) if len(lib) > 0]
+    if external_libs or static_deps or shared_deps:
+      output.write('target_link_libraries(')
+      output.write(cmake_target_name)
+      output.write('\n')
+      if static_deps:
+        write_group = circular_libs and len(static_deps) > 1
+        if write_group:
+          output.write('-Wl,--start-group\n')
+        for dep in gyp.common.uniquer(static_deps):
+          output.write('  ')
+          output.write(dep)
+          output.write('\n')
+        if write_group:
+          output.write('-Wl,--end-group\n')
+      if shared_deps:
+        for dep in gyp.common.uniquer(shared_deps):
+          output.write('  ')
+          output.write(dep)
+          output.write('\n')
+      if external_libs:
+        for lib in gyp.common.uniquer(external_libs):
+          output.write('  ')
+          output.write(lib)
+          output.write('\n')
+
+      output.write(')\n')
+
+  UnsetVariable(output, 'TOOLSET')
+  UnsetVariable(output, 'TARGET')
+
+
+def GenerateOutputForConfig(target_list, target_dicts, data,
+                            params, config_to_use):
+  options = params['options']
+  generator_flags = params['generator_flags']
+
+  # generator_dir: relative path from pwd to where make puts build files.
+  # Makes migrating from make to cmake easier, cmake doesn't put anything here.
+  # Each Gyp configuration creates a different CMakeLists.txt file
+  # to avoid incompatibilities between Gyp and CMake configurations.
+  generator_dir = os.path.relpath(options.generator_output or '.')
+
+  # output_dir: relative path from generator_dir to the build directory.
+  output_dir = generator_flags.get('output_dir', 'out')
+
+  # build_dir: relative path from source root to our output files.
+  # e.g. "out/Debug"
+  build_dir = os.path.normpath(os.path.join(generator_dir,
+                                            output_dir,
+                                            config_to_use))
+
+  toplevel_build = os.path.join(options.toplevel_dir, build_dir)
+
+  output_file = os.path.join(toplevel_build, 'CMakeLists.txt')
+  gyp.common.EnsureDirExists(output_file)
+
+  output = open(output_file, 'w')
+  output.write('cmake_minimum_required(VERSION 2.8.8 FATAL_ERROR)\n')
+  output.write('cmake_policy(VERSION 2.8.8)\n')
+
+  _, project_target, _ = gyp.common.ParseQualifiedTarget(target_list[-1])
+  output.write('project(')
+  output.write(project_target)
+  output.write(')\n')
+
+  SetVariable(output, 'configuration', config_to_use)
+
+  # The following appears to be as-yet undocumented.
+  # http://public.kitware.com/Bug/view.php?id=8392
+  output.write('enable_language(ASM)\n')
+  # ASM-ATT does not support .S files.
+  # output.write('enable_language(ASM-ATT)\n')
+
+  SetVariable(output, 'builddir', '${CMAKE_BINARY_DIR}')
+  SetVariable(output, 'obj', '${builddir}/obj')
+  output.write('\n')
+
+  # TODO: Undocumented/unsupported (the CMake Java generator depends on it).
+  # CMake by default names the object resulting from foo.c to be foo.c.o.
+  # Gyp traditionally names the object resulting from foo.c foo.o.
+  # This should be irrelevant, but some targets extract .o files from .a
+  # and depend on the name of the extracted .o files.
+  output.write('set(CMAKE_C_OUTPUT_EXTENSION_REPLACE 1)\n')
+  output.write('set(CMAKE_CXX_OUTPUT_EXTENSION_REPLACE 1)\n')
+  output.write('\n')
+
+  namer = CMakeNamer(target_list)
+
+  # The list of targets upon which the 'all' target should depend.
+  # CMake has it's own implicit 'all' target, one is not created explicitly.
+  all_qualified_targets = set()
+  for build_file in params['build_files']:
+    for qualified_target in gyp.common.AllTargets(target_list,
+                                                  target_dicts,
+                                                  os.path.normpath(build_file)):
+      all_qualified_targets.add(qualified_target)
+
+  for qualified_target in target_list:
+    WriteTarget(namer, qualified_target, target_dicts, build_dir, config_to_use,
+                options, generator_flags, all_qualified_targets, output)
+
+  output.close()
+
+
+def PerformBuild(data, configurations, params):
+  options = params['options']
+  generator_flags = params['generator_flags']
+
+  # generator_dir: relative path from pwd to where make puts build files.
+  # Makes migrating from make to cmake easier, cmake doesn't put anything here.
+  generator_dir = os.path.relpath(options.generator_output or '.')
+
+  # output_dir: relative path from generator_dir to the build directory.
+  output_dir = generator_flags.get('output_dir', 'out')
+
+  for config_name in configurations:
+    # build_dir: relative path from source root to our output files.
+    # e.g. "out/Debug"
+    build_dir = os.path.normpath(os.path.join(generator_dir,
+                                              output_dir,
+                                              config_name))
+    arguments = ['cmake', '-G', 'Ninja']
+    print 'Generating [%s]: %s' % (config_name, arguments)
+    subprocess.check_call(arguments, cwd=build_dir)
+
+    arguments = ['ninja', '-C', build_dir]
+    print 'Building [%s]: %s' % (config_name, arguments)
+    subprocess.check_call(arguments)
+
+
+def CallGenerateOutputForConfig(arglist):
+  # Ignore the interrupt signal so that the parent process catches it and
+  # kills all multiprocessing children.
+  signal.signal(signal.SIGINT, signal.SIG_IGN)
+
+  target_list, target_dicts, data, params, config_name = arglist
+  GenerateOutputForConfig(target_list, target_dicts, data, params, config_name)
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  user_config = params.get('generator_flags', {}).get('config', None)
+  if user_config:
+    GenerateOutputForConfig(target_list, target_dicts, data,
+                            params, user_config)
+  else:
+    config_names = target_dicts[target_list[0]]['configurations'].keys()
+    if params['parallel']:
+      try:
+        pool = multiprocessing.Pool(len(config_names))
+        arglists = []
+        for config_name in config_names:
+          arglists.append((target_list, target_dicts, data,
+                           params, config_name))
+          pool.map(CallGenerateOutputForConfig, arglists)
+      except KeyboardInterrupt, e:
+        pool.terminate()
+        raise e
+    else:
+      for config_name in config_names:
+        GenerateOutputForConfig(target_list, target_dicts, data,
+                                params, config_name)
diff --git a/deps/gyp/pylib/gyp/generator/dump_dependency_json.py b/deps/gyp/pylib/gyp/generator/dump_dependency_json.py
new file mode 100644
index 0000000000..927ba6ebad
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/dump_dependency_json.py
@@ -0,0 +1,81 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import collections
+import os
+import gyp
+import gyp.common
+import gyp.msvs_emulation
+import json
+import sys
+
+generator_supports_multiple_toolsets = True
+
+generator_wants_static_library_dependencies_adjusted = False
+
+generator_default_variables = {
+}
+for dirname in ['INTERMEDIATE_DIR', 'SHARED_INTERMEDIATE_DIR', 'PRODUCT_DIR',
+                'LIB_DIR', 'SHARED_LIB_DIR']:
+  # Some gyp steps fail if these are empty(!).
+  generator_default_variables[dirname] = 'dir'
+for unused in ['RULE_INPUT_PATH', 'RULE_INPUT_ROOT', 'RULE_INPUT_NAME',
+               'RULE_INPUT_DIRNAME', 'RULE_INPUT_EXT',
+               'EXECUTABLE_PREFIX', 'EXECUTABLE_SUFFIX',
+               'STATIC_LIB_PREFIX', 'STATIC_LIB_SUFFIX',
+               'SHARED_LIB_PREFIX', 'SHARED_LIB_SUFFIX',
+               'CONFIGURATION_NAME']:
+  generator_default_variables[unused] = ''
+
+
+def CalculateVariables(default_variables, params):
+  generator_flags = params.get('generator_flags', {})
+  for key, val in generator_flags.items():
+    default_variables.setdefault(key, val)
+  default_variables.setdefault('OS', gyp.common.GetFlavor(params))
+
+  flavor = gyp.common.GetFlavor(params)
+  if flavor =='win':
+    # Copy additional generator configuration data from VS, which is shared
+    # by the Windows Ninja generator.
+    import gyp.generator.msvs as msvs_generator
+    generator_additional_non_configuration_keys = getattr(msvs_generator,
+        'generator_additional_non_configuration_keys', [])
+    generator_additional_path_sections = getattr(msvs_generator,
+        'generator_additional_path_sections', [])
+
+    gyp.msvs_emulation.CalculateCommonVariables(default_variables, params)
+
+
+def CalculateGeneratorInputInfo(params):
+  """Calculate the generator specific info that gets fed to input (called by
+  gyp)."""
+  generator_flags = params.get('generator_flags', {})
+  if generator_flags.get('adjust_static_libraries', False):
+    global generator_wants_static_library_dependencies_adjusted
+    generator_wants_static_library_dependencies_adjusted = True
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  # Map of target -> list of targets it depends on.
+  edges = {}
+
+  # Queue of targets to visit.
+  targets_to_visit = target_list[:]
+
+  while len(targets_to_visit) > 0:
+    target = targets_to_visit.pop()
+    if target in edges:
+      continue
+    edges[target] = []
+
+    for dep in target_dicts[target].get('dependencies', []):
+      edges[target].append(dep)
+      targets_to_visit.append(dep)
+
+  filename = 'dump.json'
+  f = open(filename, 'w')
+  json.dump(edges, f)
+  f.close()
+  print 'Wrote json to %s.' % filename
diff --git a/deps/gyp/pylib/gyp/generator/eclipse.py b/deps/gyp/pylib/gyp/generator/eclipse.py
new file mode 100644
index 0000000000..8d08f57eaa
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/eclipse.py
@@ -0,0 +1,335 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""GYP backend that generates Eclipse CDT settings files.
+
+This backend DOES NOT generate Eclipse CDT projects. Instead, it generates XML
+files that can be imported into an Eclipse CDT project. The XML file contains a
+list of include paths and symbols (i.e. defines).
+
+Because a full .cproject definition is not created by this generator, it's not
+possible to properly define the include dirs and symbols for each file
+individually.  Instead, one set of includes/symbols is generated for the entire
+project.  This works fairly well (and is a vast improvement in general), but may
+still result in a few indexer issues here and there.
+
+This generator has no automated tests, so expect it to be broken.
+"""
+
+from xml.sax.saxutils import escape
+import os.path
+import subprocess
+import gyp
+import gyp.common
+import gyp.msvs_emulation
+import shlex
+
+generator_wants_static_library_dependencies_adjusted = False
+
+generator_default_variables = {
+}
+
+for dirname in ['INTERMEDIATE_DIR', 'PRODUCT_DIR', 'LIB_DIR', 'SHARED_LIB_DIR']:
+  # Some gyp steps fail if these are empty(!).
+  generator_default_variables[dirname] = 'dir'
+
+for unused in ['RULE_INPUT_PATH', 'RULE_INPUT_ROOT', 'RULE_INPUT_NAME',
+               'RULE_INPUT_DIRNAME', 'RULE_INPUT_EXT',
+               'EXECUTABLE_PREFIX', 'EXECUTABLE_SUFFIX',
+               'STATIC_LIB_PREFIX', 'STATIC_LIB_SUFFIX',
+               'SHARED_LIB_PREFIX', 'SHARED_LIB_SUFFIX',
+               'CONFIGURATION_NAME']:
+  generator_default_variables[unused] = ''
+
+# Include dirs will occasionally use the SHARED_INTERMEDIATE_DIR variable as
+# part of the path when dealing with generated headers.  This value will be
+# replaced dynamically for each configuration.
+generator_default_variables['SHARED_INTERMEDIATE_DIR'] = \
+    '$SHARED_INTERMEDIATE_DIR'
+
+
+def CalculateVariables(default_variables, params):
+  generator_flags = params.get('generator_flags', {})
+  for key, val in generator_flags.items():
+    default_variables.setdefault(key, val)
+  flavor = gyp.common.GetFlavor(params)
+  default_variables.setdefault('OS', flavor)
+  if flavor == 'win':
+    # Copy additional generator configuration data from VS, which is shared
+    # by the Eclipse generator.
+    import gyp.generator.msvs as msvs_generator
+    generator_additional_non_configuration_keys = getattr(msvs_generator,
+        'generator_additional_non_configuration_keys', [])
+    generator_additional_path_sections = getattr(msvs_generator,
+        'generator_additional_path_sections', [])
+
+    gyp.msvs_emulation.CalculateCommonVariables(default_variables, params)
+
+
+def CalculateGeneratorInputInfo(params):
+  """Calculate the generator specific info that gets fed to input (called by
+  gyp)."""
+  generator_flags = params.get('generator_flags', {})
+  if generator_flags.get('adjust_static_libraries', False):
+    global generator_wants_static_library_dependencies_adjusted
+    generator_wants_static_library_dependencies_adjusted = True
+
+
+def GetAllIncludeDirectories(target_list, target_dicts,
+                             shared_intermediate_dirs, config_name, params,
+                             compiler_path):
+  """Calculate the set of include directories to be used.
+
+  Returns:
+    A list including all the include_dir's specified for every target followed
+    by any include directories that were added as cflag compiler options.
+  """
+
+  gyp_includes_set = set()
+  compiler_includes_list = []
+
+  # Find compiler's default include dirs.
+  if compiler_path:
+    command = shlex.split(compiler_path)
+    command.extend(['-E', '-xc++', '-v', '-'])
+    proc = subprocess.Popen(args=command, stdin=subprocess.PIPE,
+                            stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    output = proc.communicate()[1]
+    # Extract the list of include dirs from the output, which has this format:
+    #   ...
+    #   #include "..." search starts here:
+    #   #include <...> search starts here:
+    #    /usr/include/c++/4.6
+    #    /usr/local/include
+    #   End of search list.
+    #   ...
+    in_include_list = False
+    for line in output.splitlines():
+      if line.startswith('#include'):
+        in_include_list = True
+        continue
+      if line.startswith('End of search list.'):
+        break
+      if in_include_list:
+        include_dir = line.strip()
+        if include_dir not in compiler_includes_list:
+          compiler_includes_list.append(include_dir)
+
+  flavor = gyp.common.GetFlavor(params)
+  if flavor == 'win':
+    generator_flags = params.get('generator_flags', {})
+  for target_name in target_list:
+    target = target_dicts[target_name]
+    if config_name in target['configurations']:
+      config = target['configurations'][config_name]
+
+      # Look for any include dirs that were explicitly added via cflags. This
+      # may be done in gyp files to force certain includes to come at the end.
+      # TODO(jgreenwald): Change the gyp files to not abuse cflags for this, and
+      # remove this.
+      if flavor == 'win':
+        msvs_settings = gyp.msvs_emulation.MsvsSettings(target, generator_flags)
+        cflags = msvs_settings.GetCflags(config_name)
+      else:
+        cflags = config['cflags']
+      for cflag in cflags:
+        if cflag.startswith('-I'):
+          include_dir = cflag[2:]
+          if include_dir not in compiler_includes_list:
+            compiler_includes_list.append(include_dir)
+
+      # Find standard gyp include dirs.
+      if config.has_key('include_dirs'):
+        include_dirs = config['include_dirs']
+        for shared_intermediate_dir in shared_intermediate_dirs:
+          for include_dir in include_dirs:
+            include_dir = include_dir.replace('$SHARED_INTERMEDIATE_DIR',
+                                              shared_intermediate_dir)
+            if not os.path.isabs(include_dir):
+              base_dir = os.path.dirname(target_name)
+
+              include_dir = base_dir + '/' + include_dir
+              include_dir = os.path.abspath(include_dir)
+
+            gyp_includes_set.add(include_dir)
+
+  # Generate a list that has all the include dirs.
+  all_includes_list = list(gyp_includes_set)
+  all_includes_list.sort()
+  for compiler_include in compiler_includes_list:
+    if not compiler_include in gyp_includes_set:
+      all_includes_list.append(compiler_include)
+
+  # All done.
+  return all_includes_list
+
+
+def GetCompilerPath(target_list, data):
+  """Determine a command that can be used to invoke the compiler.
+
+  Returns:
+    If this is a gyp project that has explicit make settings, try to determine
+    the compiler from that.  Otherwise, see if a compiler was specified via the
+    CC_target environment variable.
+  """
+
+  # First, see if the compiler is configured in make's settings.
+  build_file, _, _ = gyp.common.ParseQualifiedTarget(target_list[0])
+  make_global_settings_dict = data[build_file].get('make_global_settings', {})
+  for key, value in make_global_settings_dict:
+    if key in ['CC', 'CXX']:
+      return value
+
+  # Check to see if the compiler was specified as an environment variable.
+  for key in ['CC_target', 'CC', 'CXX']:
+    compiler = os.environ.get(key)
+    if compiler:
+      return compiler
+
+  return 'gcc'
+
+
+def GetAllDefines(target_list, target_dicts, data, config_name, params,
+                  compiler_path):
+  """Calculate the defines for a project.
+
+  Returns:
+    A dict that includes explict defines declared in gyp files along with all of
+    the default defines that the compiler uses.
+  """
+
+  # Get defines declared in the gyp files.
+  all_defines = {}
+  flavor = gyp.common.GetFlavor(params)
+  if flavor == 'win':
+    generator_flags = params.get('generator_flags', {})
+  for target_name in target_list:
+    target = target_dicts[target_name]
+
+    if flavor == 'win':
+      msvs_settings = gyp.msvs_emulation.MsvsSettings(target, generator_flags)
+      extra_defines = msvs_settings.GetComputedDefines(config_name)
+    else:
+      extra_defines = []
+    if config_name in target['configurations']:
+      config = target['configurations'][config_name]
+      target_defines = config['defines']
+    else:
+      target_defines = []
+    for define in target_defines + extra_defines:
+      split_define = define.split('=', 1)
+      if len(split_define) == 1:
+        split_define.append('1')
+      if split_define[0].strip() in all_defines:
+        # Already defined
+        continue
+      all_defines[split_define[0].strip()] = split_define[1].strip()
+  # Get default compiler defines (if possible).
+  if flavor == 'win':
+    return all_defines  # Default defines already processed in the loop above.
+  if compiler_path:
+    command = shlex.split(compiler_path)
+    command.extend(['-E', '-dM', '-'])
+    cpp_proc = subprocess.Popen(args=command, cwd='.',
+                                stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+    cpp_output = cpp_proc.communicate()[0]
+    cpp_lines = cpp_output.split('\n')
+    for cpp_line in cpp_lines:
+      if not cpp_line.strip():
+        continue
+      cpp_line_parts = cpp_line.split(' ', 2)
+      key = cpp_line_parts[1]
+      if len(cpp_line_parts) >= 3:
+        val = cpp_line_parts[2]
+      else:
+        val = '1'
+      all_defines[key] = val
+
+  return all_defines
+
+
+def WriteIncludePaths(out, eclipse_langs, include_dirs):
+  """Write the includes section of a CDT settings export file."""
+
+  out.write('  <section name="org.eclipse.cdt.internal.ui.wizards.' \
+            'settingswizards.IncludePaths">\n')
+  out.write('    <language name="holder for library settings"></language>\n')
+  for lang in eclipse_langs:
+    out.write('    <language name="%s">\n' % lang)
+    for include_dir in include_dirs:
+      out.write('      <includepath workspace_path="false">%s</includepath>\n' %
+                include_dir)
+    out.write('    </language>\n')
+  out.write('  </section>\n')
+
+
+def WriteMacros(out, eclipse_langs, defines):
+  """Write the macros section of a CDT settings export file."""
+
+  out.write('  <section name="org.eclipse.cdt.internal.ui.wizards.' \
+            'settingswizards.Macros">\n')
+  out.write('    <language name="holder for library settings"></language>\n')
+  for lang in eclipse_langs:
+    out.write('    <language name="%s">\n' % lang)
+    for key in sorted(defines.iterkeys()):
+      out.write('      <macro><name>%s</name><value>%s</value></macro>\n' %
+                (escape(key), escape(defines[key])))
+    out.write('    </language>\n')
+  out.write('  </section>\n')
+
+
+def GenerateOutputForConfig(target_list, target_dicts, data, params,
+                            config_name):
+  options = params['options']
+  generator_flags = params.get('generator_flags', {})
+
+  # build_dir: relative path from source root to our output files.
+  # e.g. "out/Debug"
+  build_dir = os.path.join(generator_flags.get('output_dir', 'out'),
+                           config_name)
+
+  toplevel_build = os.path.join(options.toplevel_dir, build_dir)
+  # Ninja uses out/Debug/gen while make uses out/Debug/obj/gen as the
+  # SHARED_INTERMEDIATE_DIR. Include both possible locations.
+  shared_intermediate_dirs = [os.path.join(toplevel_build, 'obj', 'gen'),
+                              os.path.join(toplevel_build, 'gen')]
+
+  out_name = os.path.join(toplevel_build, 'eclipse-cdt-settings.xml')
+  gyp.common.EnsureDirExists(out_name)
+  out = open(out_name, 'w')
+
+  out.write('<?xml version="1.0" encoding="UTF-8"?>\n')
+  out.write('<cdtprojectproperties>\n')
+
+  eclipse_langs = ['C++ Source File', 'C Source File', 'Assembly Source File',
+                   'GNU C++', 'GNU C', 'Assembly']
+  compiler_path = GetCompilerPath(target_list, data)
+  include_dirs = GetAllIncludeDirectories(target_list, target_dicts,
+                                          shared_intermediate_dirs, config_name,
+                                          params, compiler_path)
+  WriteIncludePaths(out, eclipse_langs, include_dirs)
+  defines = GetAllDefines(target_list, target_dicts, data, config_name, params,
+                          compiler_path)
+  WriteMacros(out, eclipse_langs, defines)
+
+  out.write('</cdtprojectproperties>\n')
+  out.close()
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  """Generate an XML settings file that can be imported into a CDT project."""
+
+  if params['options'].generator_output:
+    raise NotImplementedError, "--generator_output not implemented for eclipse"
+
+  user_config = params.get('generator_flags', {}).get('config', None)
+  if user_config:
+    GenerateOutputForConfig(target_list, target_dicts, data, params,
+                            user_config)
+  else:
+    config_names = target_dicts[target_list[0]]['configurations'].keys()
+    for config_name in config_names:
+      GenerateOutputForConfig(target_list, target_dicts, data, params,
+                              config_name)
+
diff --git a/deps/gyp/pylib/gyp/generator/gypd.py b/deps/gyp/pylib/gyp/generator/gypd.py
new file mode 100644
index 0000000000..22ef57f847
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/gypd.py
@@ -0,0 +1,87 @@
+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""gypd output module
+
+This module produces gyp input as its output.  Output files are given the
+.gypd extension to avoid overwriting the .gyp files that they are generated
+from.  Internal references to .gyp files (such as those found in
+"dependencies" sections) are not adjusted to point to .gypd files instead;
+unlike other paths, which are relative to the .gyp or .gypd file, such paths
+are relative to the directory from which gyp was run to create the .gypd file.
+
+This generator module is intended to be a sample and a debugging aid, hence
+the "d" for "debug" in .gypd.  It is useful to inspect the results of the
+various merges, expansions, and conditional evaluations performed by gyp
+and to see a representation of what would be fed to a generator module.
+
+It's not advisable to rename .gypd files produced by this module to .gyp,
+because they will have all merges, expansions, and evaluations already
+performed and the relevant constructs not present in the output; paths to
+dependencies may be wrong; and various sections that do not belong in .gyp
+files such as such as "included_files" and "*_excluded" will be present.
+Output will also be stripped of comments.  This is not intended to be a
+general-purpose gyp pretty-printer; for that, you probably just want to
+run "pprint.pprint(eval(open('source.gyp').read()))", which will still strip
+comments but won't do all of the other things done to this module's output.
+
+The specific formatting of the output generated by this module is subject
+to change.
+"""
+
+
+import gyp.common
+import errno
+import os
+import pprint
+
+
+# These variables should just be spit back out as variable references.
+_generator_identity_variables = [
+  'EXECUTABLE_PREFIX',
+  'EXECUTABLE_SUFFIX',
+  'INTERMEDIATE_DIR',
+  'PRODUCT_DIR',
+  'RULE_INPUT_ROOT',
+  'RULE_INPUT_DIRNAME',
+  'RULE_INPUT_EXT',
+  'RULE_INPUT_NAME',
+  'RULE_INPUT_PATH',
+  'SHARED_INTERMEDIATE_DIR',
+]
+
+# gypd doesn't define a default value for OS like many other generator
+# modules.  Specify "-D OS=whatever" on the command line to provide a value.
+generator_default_variables = {
+}
+
+# gypd supports multiple toolsets
+generator_supports_multiple_toolsets = True
+
+# TODO(mark): This always uses <, which isn't right.  The input module should
+# notify the generator to tell it which phase it is operating in, and this
+# module should use < for the early phase and then switch to > for the late
+# phase.  Bonus points for carrying @ back into the output too.
+for v in _generator_identity_variables:
+  generator_default_variables[v] = '<(%s)' % v
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  output_files = {}
+  for qualified_target in target_list:
+    [input_file, target] = \
+        gyp.common.ParseQualifiedTarget(qualified_target)[0:2]
+
+    if input_file[-4:] != '.gyp':
+      continue
+    input_file_stem = input_file[:-4]
+    output_file = input_file_stem + params['options'].suffix + '.gypd'
+
+    if not output_file in output_files:
+      output_files[output_file] = input_file
+
+  for output_file, input_file in output_files.iteritems():
+    output = open(output_file, 'w')
+    pprint.pprint(data[input_file], output)
+    output.close()
diff --git a/deps/gyp/pylib/gyp/generator/gypsh.py b/deps/gyp/pylib/gyp/generator/gypsh.py
new file mode 100644
index 0000000000..bd405f43a9
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/gypsh.py
@@ -0,0 +1,56 @@
+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""gypsh output module
+
+gypsh is a GYP shell.  It's not really a generator per se.  All it does is
+fire up an interactive Python session with a few local variables set to the
+variables passed to the generator.  Like gypd, it's intended as a debugging
+aid, to facilitate the exploration of .gyp structures after being processed
+by the input module.
+
+The expected usage is "gyp -f gypsh -D OS=desired_os".
+"""
+
+
+import code
+import sys
+
+
+# All of this stuff about generator variables was lovingly ripped from gypd.py.
+# That module has a much better description of what's going on and why.
+_generator_identity_variables = [
+  'EXECUTABLE_PREFIX',
+  'EXECUTABLE_SUFFIX',
+  'INTERMEDIATE_DIR',
+  'PRODUCT_DIR',
+  'RULE_INPUT_ROOT',
+  'RULE_INPUT_DIRNAME',
+  'RULE_INPUT_EXT',
+  'RULE_INPUT_NAME',
+  'RULE_INPUT_PATH',
+  'SHARED_INTERMEDIATE_DIR',
+]
+
+generator_default_variables = {
+}
+
+for v in _generator_identity_variables:
+  generator_default_variables[v] = '<(%s)' % v
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  locals = {
+        'target_list':  target_list,
+        'target_dicts': target_dicts,
+        'data':         data,
+      }
+
+  # Use a banner that looks like the stock Python one and like what
+  # code.interact uses by default, but tack on something to indicate what
+  # locals are available, and identify gypsh.
+  banner='Python %s on %s\nlocals.keys() = %s\ngypsh' % \
+         (sys.version, sys.platform, repr(sorted(locals.keys())))
+
+  code.interact(banner, local=locals)
diff --git a/deps/gyp/pylib/gyp/generator/make.py b/deps/gyp/pylib/gyp/generator/make.py
new file mode 100644
index 0000000000..b88a433d3d
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/make.py
@@ -0,0 +1,2181 @@
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Notes:
+#
+# This is all roughly based on the Makefile system used by the Linux
+# kernel, but is a non-recursive make -- we put the entire dependency
+# graph in front of make and let it figure it out.
+#
+# The code below generates a separate .mk file for each target, but
+# all are sourced by the top-level Makefile.  This means that all
+# variables in .mk-files clobber one another.  Be careful to use :=
+# where appropriate for immediate evaluation, and similarly to watch
+# that you're not relying on a variable value to last beween different
+# .mk files.
+#
+# TODOs:
+#
+# Global settings and utility functions are currently stuffed in the
+# toplevel Makefile.  It may make sense to generate some .mk files on
+# the side to keep the the files readable.
+
+import os
+import re
+import sys
+import subprocess
+import gyp
+import gyp.common
+import gyp.xcode_emulation
+from gyp.common import GetEnvironFallback
+
+generator_default_variables = {
+  'EXECUTABLE_PREFIX': '',
+  'EXECUTABLE_SUFFIX': '',
+  'STATIC_LIB_PREFIX': 'lib',
+  'SHARED_LIB_PREFIX': 'lib',
+  'STATIC_LIB_SUFFIX': '.a',
+  'INTERMEDIATE_DIR': '$(obj).$(TOOLSET)/$(TARGET)/geni',
+  'SHARED_INTERMEDIATE_DIR': '$(obj)/gen',
+  'PRODUCT_DIR': '$(builddir)',
+  'RULE_INPUT_ROOT': '%(INPUT_ROOT)s',  # This gets expanded by Python.
+  'RULE_INPUT_DIRNAME': '%(INPUT_DIRNAME)s',  # This gets expanded by Python.
+  'RULE_INPUT_PATH': '$(abspath $<)',
+  'RULE_INPUT_EXT': '$(suffix $<)',
+  'RULE_INPUT_NAME': '$(notdir $<)',
+  'CONFIGURATION_NAME': '$(BUILDTYPE)',
+}
+
+# Make supports multiple toolsets
+generator_supports_multiple_toolsets = True
+
+# Request sorted dependencies in the order from dependents to dependencies.
+generator_wants_sorted_dependencies = False
+
+# Placates pylint.
+generator_additional_non_configuration_keys = []
+generator_additional_path_sections = []
+generator_extra_sources_for_rules = []
+generator_filelist_paths = None
+
+
+def CalculateVariables(default_variables, params):
+  """Calculate additional variables for use in the build (called by gyp)."""
+  flavor = gyp.common.GetFlavor(params)
+  if flavor == 'mac':
+    default_variables.setdefault('OS', 'mac')
+    default_variables.setdefault('SHARED_LIB_SUFFIX', '.dylib')
+    default_variables.setdefault('SHARED_LIB_DIR',
+                                 generator_default_variables['PRODUCT_DIR'])
+    default_variables.setdefault('LIB_DIR',
+                                 generator_default_variables['PRODUCT_DIR'])
+
+    # Copy additional generator configuration data from Xcode, which is shared
+    # by the Mac Make generator.
+    import gyp.generator.xcode as xcode_generator
+    global generator_additional_non_configuration_keys
+    generator_additional_non_configuration_keys = getattr(xcode_generator,
+        'generator_additional_non_configuration_keys', [])
+    global generator_additional_path_sections
+    generator_additional_path_sections = getattr(xcode_generator,
+        'generator_additional_path_sections', [])
+    global generator_extra_sources_for_rules
+    generator_extra_sources_for_rules = getattr(xcode_generator,
+        'generator_extra_sources_for_rules', [])
+    COMPILABLE_EXTENSIONS.update({'.m': 'objc', '.mm' : 'objcxx'})
+  else:
+    operating_system = flavor
+    if flavor == 'android':
+      operating_system = 'linux'  # Keep this legacy behavior for now.
+    default_variables.setdefault('OS', operating_system)
+    default_variables.setdefault('SHARED_LIB_SUFFIX', '.so')
+    default_variables.setdefault('SHARED_LIB_DIR','$(builddir)/lib.$(TOOLSET)')
+    default_variables.setdefault('LIB_DIR', '$(obj).$(TOOLSET)')
+
+
+def CalculateGeneratorInputInfo(params):
+  """Calculate the generator specific info that gets fed to input (called by
+  gyp)."""
+  generator_flags = params.get('generator_flags', {})
+  android_ndk_version = generator_flags.get('android_ndk_version', None)
+  # Android NDK requires a strict link order.
+  if android_ndk_version:
+    global generator_wants_sorted_dependencies
+    generator_wants_sorted_dependencies = True
+
+  output_dir = params['options'].generator_output or \
+               params['options'].toplevel_dir
+  builddir_name = generator_flags.get('output_dir', 'out')
+  qualified_out_dir = os.path.normpath(os.path.join(
+    output_dir, builddir_name, 'gypfiles'))
+
+  global generator_filelist_paths
+  generator_filelist_paths = {
+    'toplevel': params['options'].toplevel_dir,
+    'qualified_out_dir': qualified_out_dir,
+  }
+
+
+# The .d checking code below uses these functions:
+# wildcard, sort, foreach, shell, wordlist
+# wildcard can handle spaces, the rest can't.
+# Since I could find no way to make foreach work with spaces in filenames
+# correctly, the .d files have spaces replaced with another character. The .d
+# file for
+#     Chromium\ Framework.framework/foo
+# is for example
+#     out/Release/.deps/out/Release/Chromium?Framework.framework/foo
+# This is the replacement character.
+SPACE_REPLACEMENT = '?'
+
+
+LINK_COMMANDS_LINUX = """\
+quiet_cmd_alink = AR($(TOOLSET)) $@
+cmd_alink = rm -f $@ && $(AR.$(TOOLSET)) crs $@ $(filter %.o,$^)
+
+quiet_cmd_alink_thin = AR($(TOOLSET)) $@
+cmd_alink_thin = rm -f $@ && $(AR.$(TOOLSET)) crsT $@ $(filter %.o,$^)
+
+# Due to circular dependencies between libraries :(, we wrap the
+# special "figure out circular dependencies" flags around the entire
+# input list during linking.
+quiet_cmd_link = LINK($(TOOLSET)) $@
+cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ -Wl,--start-group $(LD_INPUTS) -Wl,--end-group $(LIBS)
+
+# We support two kinds of shared objects (.so):
+# 1) shared_library, which is just bundling together many dependent libraries
+# into a link line.
+# 2) loadable_module, which is generating a module intended for dlopen().
+#
+# They differ only slightly:
+# In the former case, we want to package all dependent code into the .so.
+# In the latter case, we want to package just the API exposed by the
+# outermost module.
+# This means shared_library uses --whole-archive, while loadable_module doesn't.
+# (Note that --whole-archive is incompatible with the --start-group used in
+# normal linking.)
+
+# Other shared-object link notes:
+# - Set SONAME to the library filename so our binaries don't reference
+# the local, absolute paths used on the link command-line.
+quiet_cmd_solink = SOLINK($(TOOLSET)) $@
+cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--whole-archive $(LD_INPUTS) -Wl,--no-whole-archive $(LIBS)
+
+quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
+cmd_solink_module = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--start-group $(filter-out FORCE_DO_CMD, $^) -Wl,--end-group $(LIBS)
+"""
+
+LINK_COMMANDS_MAC = """\
+quiet_cmd_alink = LIBTOOL-STATIC $@
+cmd_alink = rm -f $@ && ./gyp-mac-tool filter-libtool libtool $(GYP_LIBTOOLFLAGS) -static -o $@ $(filter %.o,$^)
+
+quiet_cmd_link = LINK($(TOOLSET)) $@
+cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o "$@" $(LD_INPUTS) $(LIBS)
+
+quiet_cmd_solink = SOLINK($(TOOLSET)) $@
+cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o "$@" $(LD_INPUTS) $(LIBS)
+
+quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
+cmd_solink_module = $(LINK.$(TOOLSET)) -bundle $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(filter-out FORCE_DO_CMD, $^) $(LIBS)
+"""
+
+LINK_COMMANDS_ANDROID = """\
+quiet_cmd_alink = AR($(TOOLSET)) $@
+cmd_alink = rm -f $@ && $(AR.$(TOOLSET)) crs $@ $(filter %.o,$^)
+
+quiet_cmd_alink_thin = AR($(TOOLSET)) $@
+cmd_alink_thin = rm -f $@ && $(AR.$(TOOLSET)) crsT $@ $(filter %.o,$^)
+
+# Due to circular dependencies between libraries :(, we wrap the
+# special "figure out circular dependencies" flags around the entire
+# input list during linking.
+quiet_cmd_link = LINK($(TOOLSET)) $@
+quiet_cmd_link_host = LINK($(TOOLSET)) $@
+cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ -Wl,--start-group $(LD_INPUTS) -Wl,--end-group $(LIBS)
+cmd_link_host = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(LD_INPUTS) $(LIBS)
+
+# Other shared-object link notes:
+# - Set SONAME to the library filename so our binaries don't reference
+# the local, absolute paths used on the link command-line.
+quiet_cmd_solink = SOLINK($(TOOLSET)) $@
+cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--whole-archive $(LD_INPUTS) -Wl,--no-whole-archive $(LIBS)
+
+quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
+cmd_solink_module = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--start-group $(filter-out FORCE_DO_CMD, $^) -Wl,--end-group $(LIBS)
+quiet_cmd_solink_module_host = SOLINK_MODULE($(TOOLSET)) $@
+cmd_solink_module_host = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ $(filter-out FORCE_DO_CMD, $^) $(LIBS)
+"""
+
+
+LINK_COMMANDS_AIX = """\
+quiet_cmd_alink = AR($(TOOLSET)) $@
+cmd_alink = rm -f $@ && $(AR.$(TOOLSET)) crs $@ $(filter %.o,$^)
+
+quiet_cmd_alink_thin = AR($(TOOLSET)) $@
+cmd_alink_thin = rm -f $@ && $(AR.$(TOOLSET)) crs $@ $(filter %.o,$^)
+
+quiet_cmd_link = LINK($(TOOLSET)) $@
+cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(LD_INPUTS) $(LIBS)
+
+quiet_cmd_solink = SOLINK($(TOOLSET)) $@
+cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(LD_INPUTS) $(LIBS)
+
+quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
+cmd_solink_module = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(filter-out FORCE_DO_CMD, $^) $(LIBS)
+"""
+
+
+# Header of toplevel Makefile.
+# This should go into the build tree, but it's easier to keep it here for now.
+SHARED_HEADER = ("""\
+# We borrow heavily from the kernel build setup, though we are simpler since
+# we don't have Kconfig tweaking settings on us.
+
+# The implicit make rules have it looking for RCS files, among other things.
+# We instead explicitly write all the rules we care about.
+# It's even quicker (saves ~200ms) to pass -r on the command line.
+MAKEFLAGS=-r
+
+# The source directory tree.
+srcdir := %(srcdir)s
+abs_srcdir := $(abspath $(srcdir))
+
+# The name of the builddir.
+builddir_name ?= %(builddir)s
+
+# The V=1 flag on command line makes us verbosely print command lines.
+ifdef V
+  quiet=
+else
+  quiet=quiet_
+endif
+
+# Specify BUILDTYPE=Release on the command line for a release build.
+BUILDTYPE ?= %(default_configuration)s
+
+# Directory all our build output goes into.
+# Note that this must be two directories beneath src/ for unit tests to pass,
+# as they reach into the src/ directory for data with relative paths.
+builddir ?= $(builddir_name)/$(BUILDTYPE)
+abs_builddir := $(abspath $(builddir))
+depsdir := $(builddir)/.deps
+
+# Object output directory.
+obj := $(builddir)/obj
+abs_obj := $(abspath $(obj))
+
+# We build up a list of every single one of the targets so we can slurp in the
+# generated dependency rule Makefiles in one pass.
+all_deps :=
+
+%(make_global_settings)s
+
+CC.target ?= %(CC.target)s
+CFLAGS.target ?= $(CFLAGS)
+CXX.target ?= %(CXX.target)s
+CXXFLAGS.target ?= $(CXXFLAGS)
+LINK.target ?= %(LINK.target)s
+LDFLAGS.target ?= $(LDFLAGS)
+AR.target ?= $(AR)
+
+# C++ apps need to be linked with g++.
+#
+# Note: flock is used to seralize linking. Linking is a memory-intensive
+# process so running parallel links can often lead to thrashing.  To disable
+# the serialization, override LINK via an envrionment variable as follows:
+#
+#   export LINK=g++
+#
+# This will allow make to invoke N linker processes as specified in -jN.
+LINK ?= %(flock)s $(builddir)/linker.lock $(CXX.target)
+
+# TODO(evan): move all cross-compilation logic to gyp-time so we don't need
+# to replicate this environment fallback in make as well.
+CC.host ?= %(CC.host)s
+CFLAGS.host ?=
+CXX.host ?= %(CXX.host)s
+CXXFLAGS.host ?=
+LINK.host ?= %(LINK.host)s
+LDFLAGS.host ?=
+AR.host ?= %(AR.host)s
+
+# Define a dir function that can handle spaces.
+# http://www.gnu.org/software/make/manual/make.html#Syntax-of-Functions
+# "leading spaces cannot appear in the text of the first argument as written.
+# These characters can be put into the argument value by variable substitution."
+empty :=
+space := $(empty) $(empty)
+
+# http://stackoverflow.com/questions/1189781/using-make-dir-or-notdir-on-a-path-with-spaces
+replace_spaces = $(subst $(space),""" + SPACE_REPLACEMENT + """,$1)
+unreplace_spaces = $(subst """ + SPACE_REPLACEMENT + """,$(space),$1)
+dirx = $(call unreplace_spaces,$(dir $(call replace_spaces,$1)))
+
+# Flags to make gcc output dependency info.  Note that you need to be
+# careful here to use the flags that ccache and distcc can understand.
+# We write to a dep file on the side first and then rename at the end
+# so we can't end up with a broken dep file.
+depfile = $(depsdir)/$(call replace_spaces,$@).d
+DEPFLAGS = -MMD -MF $(depfile).raw
+
+# We have to fixup the deps output in a few ways.
+# (1) the file output should mention the proper .o file.
+# ccache or distcc lose the path to the target, so we convert a rule of
+# the form:
+#   foobar.o: DEP1 DEP2
+# into
+#   path/to/foobar.o: DEP1 DEP2
+# (2) we want missing files not to cause us to fail to build.
+# We want to rewrite
+#   foobar.o: DEP1 DEP2 \\
+#               DEP3
+# to
+#   DEP1:
+#   DEP2:
+#   DEP3:
+# so if the files are missing, they're just considered phony rules.
+# We have to do some pretty insane escaping to get those backslashes
+# and dollar signs past make, the shell, and sed at the same time.
+# Doesn't work with spaces, but that's fine: .d files have spaces in
+# their names replaced with other characters."""
+r"""
+define fixup_dep
+# The depfile may not exist if the input file didn't have any #includes.
+touch $(depfile).raw
+# Fixup path as in (1).
+sed -e "s|^$(notdir $@)|$@|" $(depfile).raw >> $(depfile)
+# Add extra rules as in (2).
+# We remove slashes and replace spaces with new lines;
+# remove blank lines;
+# delete the first line and append a colon to the remaining lines.
+sed -e 's|\\||' -e 'y| |\n|' $(depfile).raw |\
+  grep -v '^$$'                             |\
+  sed -e 1d -e 's|$$|:|'                     \
+    >> $(depfile)
+rm $(depfile).raw
+endef
+"""
+"""
+# Command definitions:
+# - cmd_foo is the actual command to run;
+# - quiet_cmd_foo is the brief-output summary of the command.
+
+quiet_cmd_cc = CC($(TOOLSET)) $@
+cmd_cc = $(CC.$(TOOLSET)) $(GYP_CFLAGS) $(DEPFLAGS) $(CFLAGS.$(TOOLSET)) -c -o $@ $<
+
+quiet_cmd_cxx = CXX($(TOOLSET)) $@
+cmd_cxx = $(CXX.$(TOOLSET)) $(GYP_CXXFLAGS) $(DEPFLAGS) $(CXXFLAGS.$(TOOLSET)) -c -o $@ $<
+%(extra_commands)s
+quiet_cmd_touch = TOUCH $@
+cmd_touch = touch $@
+
+quiet_cmd_copy = COPY $@
+# send stderr to /dev/null to ignore messages when linking directories.
+cmd_copy = ln -f "$<" "$@" 2>/dev/null || (rm -rf "$@" && cp -af "$<" "$@")
+
+%(link_commands)s
+"""
+
+r"""
+# Define an escape_quotes function to escape single quotes.
+# This allows us to handle quotes properly as long as we always use
+# use single quotes and escape_quotes.
+escape_quotes = $(subst ','\'',$(1))
+# This comment is here just to include a ' to unconfuse syntax highlighting.
+# Define an escape_vars function to escape '$' variable syntax.
+# This allows us to read/write command lines with shell variables (e.g.
+# $LD_LIBRARY_PATH), without triggering make substitution.
+escape_vars = $(subst $$,$$$$,$(1))
+# Helper that expands to a shell command to echo a string exactly as it is in
+# make. This uses printf instead of echo because printf's behaviour with respect
+# to escape sequences is more portable than echo's across different shells
+# (e.g., dash, bash).
+exact_echo = printf '%%s\n' '$(call escape_quotes,$(1))'
+"""
+"""
+# Helper to compare the command we're about to run against the command
+# we logged the last time we ran the command.  Produces an empty
+# string (false) when the commands match.
+# Tricky point: Make has no string-equality test function.
+# The kernel uses the following, but it seems like it would have false
+# positives, where one string reordered its arguments.
+#   arg_check = $(strip $(filter-out $(cmd_$(1)), $(cmd_$@)) \\
+#                       $(filter-out $(cmd_$@), $(cmd_$(1))))
+# We instead substitute each for the empty string into the other, and
+# say they're equal if both substitutions produce the empty string.
+# .d files contain """ + SPACE_REPLACEMENT + \
+                   """ instead of spaces, take that into account.
+command_changed = $(or $(subst $(cmd_$(1)),,$(cmd_$(call replace_spaces,$@))),\\
+                       $(subst $(cmd_$(call replace_spaces,$@)),,$(cmd_$(1))))
+
+# Helper that is non-empty when a prerequisite changes.
+# Normally make does this implicitly, but we force rules to always run
+# so we can check their command lines.
+#   $? -- new prerequisites
+#   $| -- order-only dependencies
+prereq_changed = $(filter-out FORCE_DO_CMD,$(filter-out $|,$?))
+
+# Helper that executes all postbuilds until one fails.
+define do_postbuilds
+  @E=0;\\
+  for p in $(POSTBUILDS); do\\
+    eval $$p;\\
+    E=$$?;\\
+    if [ $$E -ne 0 ]; then\\
+      break;\\
+    fi;\\
+  done;\\
+  if [ $$E -ne 0 ]; then\\
+    rm -rf "$@";\\
+    exit $$E;\\
+  fi
+endef
+
+# do_cmd: run a command via the above cmd_foo names, if necessary.
+# Should always run for a given target to handle command-line changes.
+# Second argument, if non-zero, makes it do asm/C/C++ dependency munging.
+# Third argument, if non-zero, makes it do POSTBUILDS processing.
+# Note: We intentionally do NOT call dirx for depfile, since it contains """ + \
+                                                     SPACE_REPLACEMENT + """ for
+# spaces already and dirx strips the """ + SPACE_REPLACEMENT + \
+                                     """ characters.
+define do_cmd
+$(if $(or $(command_changed),$(prereq_changed)),
+  @$(call exact_echo,  $($(quiet)cmd_$(1)))
+  @mkdir -p "$(call dirx,$@)" "$(dir $(depfile))"
+  $(if $(findstring flock,$(word %(flock_index)d,$(cmd_$1))),
+    @$(cmd_$(1))
+    @echo "  $(quiet_cmd_$(1)): Finished",
+    @$(cmd_$(1))
+  )
+  @$(call exact_echo,$(call escape_vars,cmd_$(call replace_spaces,$@) := $(cmd_$(1)))) > $(depfile)
+  @$(if $(2),$(fixup_dep))
+  $(if $(and $(3), $(POSTBUILDS)),
+    $(call do_postbuilds)
+  )
+)
+endef
+
+# Declare the "%(default_target)s" target first so it is the default,
+# even though we don't have the deps yet.
+.PHONY: %(default_target)s
+%(default_target)s:
+
+# make looks for ways to re-generate included makefiles, but in our case, we
+# don't have a direct way. Explicitly telling make that it has nothing to do
+# for them makes it go faster.
+%%.d: ;
+
+# Use FORCE_DO_CMD to force a target to run.  Should be coupled with
+# do_cmd.
+.PHONY: FORCE_DO_CMD
+FORCE_DO_CMD:
+
+""")
+
+SHARED_HEADER_MAC_COMMANDS = """
+quiet_cmd_objc = CXX($(TOOLSET)) $@
+cmd_objc = $(CC.$(TOOLSET)) $(GYP_OBJCFLAGS) $(DEPFLAGS) -c -o $@ $<
+
+quiet_cmd_objcxx = CXX($(TOOLSET)) $@
+cmd_objcxx = $(CXX.$(TOOLSET)) $(GYP_OBJCXXFLAGS) $(DEPFLAGS) -c -o $@ $<
+
+# Commands for precompiled header files.
+quiet_cmd_pch_c = CXX($(TOOLSET)) $@
+cmd_pch_c = $(CC.$(TOOLSET)) $(GYP_PCH_CFLAGS) $(DEPFLAGS) $(CXXFLAGS.$(TOOLSET)) -c -o $@ $<
+quiet_cmd_pch_cc = CXX($(TOOLSET)) $@
+cmd_pch_cc = $(CC.$(TOOLSET)) $(GYP_PCH_CXXFLAGS) $(DEPFLAGS) $(CXXFLAGS.$(TOOLSET)) -c -o $@ $<
+quiet_cmd_pch_m = CXX($(TOOLSET)) $@
+cmd_pch_m = $(CC.$(TOOLSET)) $(GYP_PCH_OBJCFLAGS) $(DEPFLAGS) -c -o $@ $<
+quiet_cmd_pch_mm = CXX($(TOOLSET)) $@
+cmd_pch_mm = $(CC.$(TOOLSET)) $(GYP_PCH_OBJCXXFLAGS) $(DEPFLAGS) -c -o $@ $<
+
+# gyp-mac-tool is written next to the root Makefile by gyp.
+# Use $(4) for the command, since $(2) and $(3) are used as flag by do_cmd
+# already.
+quiet_cmd_mac_tool = MACTOOL $(4) $<
+cmd_mac_tool = ./gyp-mac-tool $(4) $< "$@"
+
+quiet_cmd_mac_package_framework = PACKAGE FRAMEWORK $@
+cmd_mac_package_framework = ./gyp-mac-tool package-framework "$@" $(4)
+
+quiet_cmd_infoplist = INFOPLIST $@
+cmd_infoplist = $(CC.$(TOOLSET)) -E -P -Wno-trigraphs -x c $(INFOPLIST_DEFINES) "$<" -o "$@"
+"""
+
+
+def WriteRootHeaderSuffixRules(writer):
+  extensions = sorted(COMPILABLE_EXTENSIONS.keys(), key=str.lower)
+
+  writer.write('# Suffix rules, putting all outputs into $(obj).\n')
+  for ext in extensions:
+    writer.write('$(obj).$(TOOLSET)/%%.o: $(srcdir)/%%%s FORCE_DO_CMD\n' % ext)
+    writer.write('\t@$(call do_cmd,%s,1)\n' % COMPILABLE_EXTENSIONS[ext])
+
+  writer.write('\n# Try building from generated source, too.\n')
+  for ext in extensions:
+    writer.write(
+        '$(obj).$(TOOLSET)/%%.o: $(obj).$(TOOLSET)/%%%s FORCE_DO_CMD\n' % ext)
+    writer.write('\t@$(call do_cmd,%s,1)\n' % COMPILABLE_EXTENSIONS[ext])
+  writer.write('\n')
+  for ext in extensions:
+    writer.write('$(obj).$(TOOLSET)/%%.o: $(obj)/%%%s FORCE_DO_CMD\n' % ext)
+    writer.write('\t@$(call do_cmd,%s,1)\n' % COMPILABLE_EXTENSIONS[ext])
+  writer.write('\n')
+
+
+SHARED_HEADER_SUFFIX_RULES_COMMENT1 = ("""\
+# Suffix rules, putting all outputs into $(obj).
+""")
+
+
+SHARED_HEADER_SUFFIX_RULES_COMMENT2 = ("""\
+# Try building from generated source, too.
+""")
+
+
+SHARED_FOOTER = """\
+# "all" is a concatenation of the "all" targets from all the included
+# sub-makefiles. This is just here to clarify.
+all:
+
+# Add in dependency-tracking rules.  $(all_deps) is the list of every single
+# target in our tree. Only consider the ones with .d (dependency) info:
+d_files := $(wildcard $(foreach f,$(all_deps),$(depsdir)/$(f).d))
+ifneq ($(d_files),)
+  include $(d_files)
+endif
+"""
+
+header = """\
+# This file is generated by gyp; do not edit.
+
+"""
+
+# Maps every compilable file extension to the do_cmd that compiles it.
+COMPILABLE_EXTENSIONS = {
+  '.c': 'cc',
+  '.cc': 'cxx',
+  '.cpp': 'cxx',
+  '.cxx': 'cxx',
+  '.s': 'cc',
+  '.S': 'cc',
+}
+
+def Compilable(filename):
+  """Return true if the file is compilable (should be in OBJS)."""
+  for res in (filename.endswith(e) for e in COMPILABLE_EXTENSIONS):
+    if res:
+      return True
+  return False
+
+
+def Linkable(filename):
+  """Return true if the file is linkable (should be on the link line)."""
+  return filename.endswith('.o')
+
+
+def Target(filename):
+  """Translate a compilable filename to its .o target."""
+  return os.path.splitext(filename)[0] + '.o'
+
+
+def EscapeShellArgument(s):
+  """Quotes an argument so that it will be interpreted literally by a POSIX
+     shell. Taken from
+     http://stackoverflow.com/questions/35817/whats-the-best-way-to-escape-ossystem-calls-in-python
+     """
+  return "'" + s.replace("'", "'\\''") + "'"
+
+
+def EscapeMakeVariableExpansion(s):
+  """Make has its own variable expansion syntax using $. We must escape it for
+     string to be interpreted literally."""
+  return s.replace('$', '$$')
+
+
+def EscapeCppDefine(s):
+  """Escapes a CPP define so that it will reach the compiler unaltered."""
+  s = EscapeShellArgument(s)
+  s = EscapeMakeVariableExpansion(s)
+  # '#' characters must be escaped even embedded in a string, else Make will
+  # treat it as the start of a comment.
+  return s.replace('#', r'\#')
+
+
+def QuoteIfNecessary(string):
+  """TODO: Should this ideally be replaced with one or more of the above
+     functions?"""
+  if '"' in string:
+    string = '"' + string.replace('"', '\\"') + '"'
+  return string
+
+
+def StringToMakefileVariable(string):
+  """Convert a string to a value that is acceptable as a make variable name."""
+  return re.sub('[^a-zA-Z0-9_]', '_', string)
+
+
+srcdir_prefix = ''
+def Sourceify(path):
+  """Convert a path to its source directory form."""
+  if '$(' in path:
+    return path
+  if os.path.isabs(path):
+    return path
+  return srcdir_prefix + path
+
+
+def QuoteSpaces(s, quote=r'\ '):
+  return s.replace(' ', quote)
+
+
+# Map from qualified target to path to output.
+target_outputs = {}
+# Map from qualified target to any linkable output.  A subset
+# of target_outputs.  E.g. when mybinary depends on liba, we want to
+# include liba in the linker line; when otherbinary depends on
+# mybinary, we just want to build mybinary first.
+target_link_deps = {}
+
+
+class MakefileWriter:
+  """MakefileWriter packages up the writing of one target-specific foobar.mk.
+
+  Its only real entry point is Write(), and is mostly used for namespacing.
+  """
+
+  def __init__(self, generator_flags, flavor):
+    self.generator_flags = generator_flags
+    self.flavor = flavor
+
+    self.suffix_rules_srcdir = {}
+    self.suffix_rules_objdir1 = {}
+    self.suffix_rules_objdir2 = {}
+
+    # Generate suffix rules for all compilable extensions.
+    for ext in COMPILABLE_EXTENSIONS.keys():
+      # Suffix rules for source folder.
+      self.suffix_rules_srcdir.update({ext: ("""\
+$(obj).$(TOOLSET)/$(TARGET)/%%.o: $(srcdir)/%%%s FORCE_DO_CMD
+	@$(call do_cmd,%s,1)
+""" % (ext, COMPILABLE_EXTENSIONS[ext]))})
+
+      # Suffix rules for generated source files.
+      self.suffix_rules_objdir1.update({ext: ("""\
+$(obj).$(TOOLSET)/$(TARGET)/%%.o: $(obj).$(TOOLSET)/%%%s FORCE_DO_CMD
+	@$(call do_cmd,%s,1)
+""" % (ext, COMPILABLE_EXTENSIONS[ext]))})
+      self.suffix_rules_objdir2.update({ext: ("""\
+$(obj).$(TOOLSET)/$(TARGET)/%%.o: $(obj)/%%%s FORCE_DO_CMD
+	@$(call do_cmd,%s,1)
+""" % (ext, COMPILABLE_EXTENSIONS[ext]))})
+
+
+  def Write(self, qualified_target, base_path, output_filename, spec, configs,
+            part_of_all):
+    """The main entry point: writes a .mk file for a single target.
+
+    Arguments:
+      qualified_target: target we're generating
+      base_path: path relative to source root we're building in, used to resolve
+                 target-relative paths
+      output_filename: output .mk file name to write
+      spec, configs: gyp info
+      part_of_all: flag indicating this target is part of 'all'
+    """
+    gyp.common.EnsureDirExists(output_filename)
+
+    self.fp = open(output_filename, 'w')
+
+    self.fp.write(header)
+
+    self.qualified_target = qualified_target
+    self.path = base_path
+    self.target = spec['target_name']
+    self.type = spec['type']
+    self.toolset = spec['toolset']
+
+    self.is_mac_bundle = gyp.xcode_emulation.IsMacBundle(self.flavor, spec)
+    if self.flavor == 'mac':
+      self.xcode_settings = gyp.xcode_emulation.XcodeSettings(spec)
+    else:
+      self.xcode_settings = None
+
+    deps, link_deps = self.ComputeDeps(spec)
+
+    # Some of the generation below can add extra output, sources, or
+    # link dependencies.  All of the out params of the functions that
+    # follow use names like extra_foo.
+    extra_outputs = []
+    extra_sources = []
+    extra_link_deps = []
+    extra_mac_bundle_resources = []
+    mac_bundle_deps = []
+
+    if self.is_mac_bundle:
+      self.output = self.ComputeMacBundleOutput(spec)
+      self.output_binary = self.ComputeMacBundleBinaryOutput(spec)
+    else:
+      self.output = self.output_binary = self.ComputeOutput(spec)
+
+    self.is_standalone_static_library = bool(
+        spec.get('standalone_static_library', 0))
+    self._INSTALLABLE_TARGETS = ('executable', 'loadable_module',
+                                 'shared_library')
+    if (self.is_standalone_static_library or
+        self.type in self._INSTALLABLE_TARGETS):
+      self.alias = os.path.basename(self.output)
+      install_path = self._InstallableTargetInstallPath()
+    else:
+      self.alias = self.output
+      install_path = self.output
+
+    self.WriteLn("TOOLSET := " + self.toolset)
+    self.WriteLn("TARGET := " + self.target)
+
+    # Actions must come first, since they can generate more OBJs for use below.
+    if 'actions' in spec:
+      self.WriteActions(spec['actions'], extra_sources, extra_outputs,
+                        extra_mac_bundle_resources, part_of_all)
+
+    # Rules must be early like actions.
+    if 'rules' in spec:
+      self.WriteRules(spec['rules'], extra_sources, extra_outputs,
+                      extra_mac_bundle_resources, part_of_all)
+
+    if 'copies' in spec:
+      self.WriteCopies(spec['copies'], extra_outputs, part_of_all)
+
+    # Bundle resources.
+    if self.is_mac_bundle:
+      all_mac_bundle_resources = (
+          spec.get('mac_bundle_resources', []) + extra_mac_bundle_resources)
+      self.WriteMacBundleResources(all_mac_bundle_resources, mac_bundle_deps)
+      self.WriteMacInfoPlist(mac_bundle_deps)
+
+    # Sources.
+    all_sources = spec.get('sources', []) + extra_sources
+    if all_sources:
+      self.WriteSources(
+          configs, deps, all_sources, extra_outputs,
+          extra_link_deps, part_of_all,
+          gyp.xcode_emulation.MacPrefixHeader(
+              self.xcode_settings, lambda p: Sourceify(self.Absolutify(p)),
+              self.Pchify))
+      sources = filter(Compilable, all_sources)
+      if sources:
+        self.WriteLn(SHARED_HEADER_SUFFIX_RULES_COMMENT1)
+        extensions = set([os.path.splitext(s)[1] for s in sources])
+        for ext in extensions:
+          if ext in self.suffix_rules_srcdir:
+            self.WriteLn(self.suffix_rules_srcdir[ext])
+        self.WriteLn(SHARED_HEADER_SUFFIX_RULES_COMMENT2)
+        for ext in extensions:
+          if ext in self.suffix_rules_objdir1:
+            self.WriteLn(self.suffix_rules_objdir1[ext])
+        for ext in extensions:
+          if ext in self.suffix_rules_objdir2:
+            self.WriteLn(self.suffix_rules_objdir2[ext])
+        self.WriteLn('# End of this set of suffix rules')
+
+        # Add dependency from bundle to bundle binary.
+        if self.is_mac_bundle:
+          mac_bundle_deps.append(self.output_binary)
+
+    self.WriteTarget(spec, configs, deps, extra_link_deps + link_deps,
+                     mac_bundle_deps, extra_outputs, part_of_all)
+
+    # Update global list of target outputs, used in dependency tracking.
+    target_outputs[qualified_target] = install_path
+
+    # Update global list of link dependencies.
+    if self.type in ('static_library', 'shared_library'):
+      target_link_deps[qualified_target] = self.output_binary
+
+    # Currently any versions have the same effect, but in future the behavior
+    # could be different.
+    if self.generator_flags.get('android_ndk_version', None):
+      self.WriteAndroidNdkModuleRule(self.target, all_sources, link_deps)
+
+    self.fp.close()
+
+
+  def WriteSubMake(self, output_filename, makefile_path, targets, build_dir):
+    """Write a "sub-project" Makefile.
+
+    This is a small, wrapper Makefile that calls the top-level Makefile to build
+    the targets from a single gyp file (i.e. a sub-project).
+
+    Arguments:
+      output_filename: sub-project Makefile name to write
+      makefile_path: path to the top-level Makefile
+      targets: list of "all" targets for this sub-project
+      build_dir: build output directory, relative to the sub-project
+    """
+    gyp.common.EnsureDirExists(output_filename)
+    self.fp = open(output_filename, 'w')
+    self.fp.write(header)
+    # For consistency with other builders, put sub-project build output in the
+    # sub-project dir (see test/subdirectory/gyptest-subdir-all.py).
+    self.WriteLn('export builddir_name ?= %s' %
+                 os.path.join(os.path.dirname(output_filename), build_dir))
+    self.WriteLn('.PHONY: all')
+    self.WriteLn('all:')
+    if makefile_path:
+      makefile_path = ' -C ' + makefile_path
+    self.WriteLn('\t$(MAKE)%s %s' % (makefile_path, ' '.join(targets)))
+    self.fp.close()
+
+
+  def WriteActions(self, actions, extra_sources, extra_outputs,
+                   extra_mac_bundle_resources, part_of_all):
+    """Write Makefile code for any 'actions' from the gyp input.
+
+    extra_sources: a list that will be filled in with newly generated source
+                   files, if any
+    extra_outputs: a list that will be filled in with any outputs of these
+                   actions (used to make other pieces dependent on these
+                   actions)
+    part_of_all: flag indicating this target is part of 'all'
+    """
+    env = self.GetSortedXcodeEnv()
+    for action in actions:
+      name = StringToMakefileVariable('%s_%s' % (self.qualified_target,
+                                                 action['action_name']))
+      self.WriteLn('### Rules for action "%s":' % action['action_name'])
+      inputs = action['inputs']
+      outputs = action['outputs']
+
+      # Build up a list of outputs.
+      # Collect the output dirs we'll need.
+      dirs = set()
+      for out in outputs:
+        dir = os.path.split(out)[0]
+        if dir:
+          dirs.add(dir)
+      if int(action.get('process_outputs_as_sources', False)):
+        extra_sources += outputs
+      if int(action.get('process_outputs_as_mac_bundle_resources', False)):
+        extra_mac_bundle_resources += outputs
+
+      # Write the actual command.
+      action_commands = action['action']
+      if self.flavor == 'mac':
+        action_commands = [gyp.xcode_emulation.ExpandEnvVars(command, env)
+                          for command in action_commands]
+      command = gyp.common.EncodePOSIXShellList(action_commands)
+      if 'message' in action:
+        self.WriteLn('quiet_cmd_%s = ACTION %s $@' % (name, action['message']))
+      else:
+        self.WriteLn('quiet_cmd_%s = ACTION %s $@' % (name, name))
+      if len(dirs) > 0:
+        command = 'mkdir -p %s' % ' '.join(dirs) + '; ' + command
+
+      cd_action = 'cd %s; ' % Sourceify(self.path or '.')
+
+      # command and cd_action get written to a toplevel variable called
+      # cmd_foo. Toplevel variables can't handle things that change per
+      # makefile like $(TARGET), so hardcode the target.
+      command = command.replace('$(TARGET)', self.target)
+      cd_action = cd_action.replace('$(TARGET)', self.target)
+
+      # Set LD_LIBRARY_PATH in case the action runs an executable from this
+      # build which links to shared libs from this build.
+      # actions run on the host, so they should in theory only use host
+      # libraries, but until everything is made cross-compile safe, also use
+      # target libraries.
+      # TODO(piman): when everything is cross-compile safe, remove lib.target
+      self.WriteLn('cmd_%s = LD_LIBRARY_PATH=$(builddir)/lib.host:'
+                   '$(builddir)/lib.target:$$LD_LIBRARY_PATH; '
+                   'export LD_LIBRARY_PATH; '
+                   '%s%s'
+                   % (name, cd_action, command))
+      self.WriteLn()
+      outputs = map(self.Absolutify, outputs)
+      # The makefile rules are all relative to the top dir, but the gyp actions
+      # are defined relative to their containing dir.  This replaces the obj
+      # variable for the action rule with an absolute version so that the output
+      # goes in the right place.
+      # Only write the 'obj' and 'builddir' rules for the "primary" output (:1);
+      # it's superfluous for the "extra outputs", and this avoids accidentally
+      # writing duplicate dummy rules for those outputs.
+      # Same for environment.
+      self.WriteLn("%s: obj := $(abs_obj)" % QuoteSpaces(outputs[0]))
+      self.WriteLn("%s: builddir := $(abs_builddir)" % QuoteSpaces(outputs[0]))
+      self.WriteSortedXcodeEnv(outputs[0], self.GetSortedXcodeEnv())
+
+      for input in inputs:
+        assert ' ' not in input, (
+            "Spaces in action input filenames not supported (%s)"  % input)
+      for output in outputs:
+        assert ' ' not in output, (
+            "Spaces in action output filenames not supported (%s)"  % output)
+
+      # See the comment in WriteCopies about expanding env vars.
+      outputs = [gyp.xcode_emulation.ExpandEnvVars(o, env) for o in outputs]
+      inputs = [gyp.xcode_emulation.ExpandEnvVars(i, env) for i in inputs]
+
+      self.WriteDoCmd(outputs, map(Sourceify, map(self.Absolutify, inputs)),
+                      part_of_all=part_of_all, command=name)
+
+      # Stuff the outputs in a variable so we can refer to them later.
+      outputs_variable = 'action_%s_outputs' % name
+      self.WriteLn('%s := %s' % (outputs_variable, ' '.join(outputs)))
+      extra_outputs.append('$(%s)' % outputs_variable)
+      self.WriteLn()
+
+    self.WriteLn()
+
+
+  def WriteRules(self, rules, extra_sources, extra_outputs,
+                 extra_mac_bundle_resources, part_of_all):
+    """Write Makefile code for any 'rules' from the gyp input.
+
+    extra_sources: a list that will be filled in with newly generated source
+                   files, if any
+    extra_outputs: a list that will be filled in with any outputs of these
+                   rules (used to make other pieces dependent on these rules)
+    part_of_all: flag indicating this target is part of 'all'
+    """
+    env = self.GetSortedXcodeEnv()
+    for rule in rules:
+      name = StringToMakefileVariable('%s_%s' % (self.qualified_target,
+                                                 rule['rule_name']))
+      count = 0
+      self.WriteLn('### Generated for rule %s:' % name)
+
+      all_outputs = []
+
+      for rule_source in rule.get('rule_sources', []):
+        dirs = set()
+        (rule_source_dirname, rule_source_basename) = os.path.split(rule_source)
+        (rule_source_root, rule_source_ext) = \
+            os.path.splitext(rule_source_basename)
+
+        outputs = [self.ExpandInputRoot(out, rule_source_root,
+                                        rule_source_dirname)
+                   for out in rule['outputs']]
+
+        for out in outputs:
+          dir = os.path.dirname(out)
+          if dir:
+            dirs.add(dir)
+        if int(rule.get('process_outputs_as_sources', False)):
+          extra_sources += outputs
+        if int(rule.get('process_outputs_as_mac_bundle_resources', False)):
+          extra_mac_bundle_resources += outputs
+        inputs = map(Sourceify, map(self.Absolutify, [rule_source] +
+                                    rule.get('inputs', [])))
+        actions = ['$(call do_cmd,%s_%d)' % (name, count)]
+
+        if name == 'resources_grit':
+          # HACK: This is ugly.  Grit intentionally doesn't touch the
+          # timestamp of its output file when the file doesn't change,
+          # which is fine in hash-based dependency systems like scons
+          # and forge, but not kosher in the make world.  After some
+          # discussion, hacking around it here seems like the least
+          # amount of pain.
+          actions += ['@touch --no-create $@']
+
+        # See the comment in WriteCopies about expanding env vars.
+        outputs = [gyp.xcode_emulation.ExpandEnvVars(o, env) for o in outputs]
+        inputs = [gyp.xcode_emulation.ExpandEnvVars(i, env) for i in inputs]
+
+        outputs = map(self.Absolutify, outputs)
+        all_outputs += outputs
+        # Only write the 'obj' and 'builddir' rules for the "primary" output
+        # (:1); it's superfluous for the "extra outputs", and this avoids
+        # accidentally writing duplicate dummy rules for those outputs.
+        self.WriteLn('%s: obj := $(abs_obj)' % outputs[0])
+        self.WriteLn('%s: builddir := $(abs_builddir)' % outputs[0])
+        self.WriteMakeRule(outputs, inputs + ['FORCE_DO_CMD'], actions)
+        # Spaces in rule filenames are not supported, but rule variables have
+        # spaces in them (e.g. RULE_INPUT_PATH expands to '$(abspath $<)').
+        # The spaces within the variables are valid, so remove the variables
+        # before checking.
+        variables_with_spaces = re.compile(r'\$\([^ ]* \$<\)')
+        for output in outputs:
+          output = re.sub(variables_with_spaces, '', output)
+          assert ' ' not in output, (
+              "Spaces in rule filenames not yet supported (%s)"  % output)
+        self.WriteLn('all_deps += %s' % ' '.join(outputs))
+
+        action = [self.ExpandInputRoot(ac, rule_source_root,
+                                       rule_source_dirname)
+                  for ac in rule['action']]
+        mkdirs = ''
+        if len(dirs) > 0:
+          mkdirs = 'mkdir -p %s; ' % ' '.join(dirs)
+        cd_action = 'cd %s; ' % Sourceify(self.path or '.')
+
+        # action, cd_action, and mkdirs get written to a toplevel variable
+        # called cmd_foo. Toplevel variables can't handle things that change
+        # per makefile like $(TARGET), so hardcode the target.
+        if self.flavor == 'mac':
+          action = [gyp.xcode_emulation.ExpandEnvVars(command, env)
+                    for command in action]
+        action = gyp.common.EncodePOSIXShellList(action)
+        action = action.replace('$(TARGET)', self.target)
+        cd_action = cd_action.replace('$(TARGET)', self.target)
+        mkdirs = mkdirs.replace('$(TARGET)', self.target)
+
+        # Set LD_LIBRARY_PATH in case the rule runs an executable from this
+        # build which links to shared libs from this build.
+        # rules run on the host, so they should in theory only use host
+        # libraries, but until everything is made cross-compile safe, also use
+        # target libraries.
+        # TODO(piman): when everything is cross-compile safe, remove lib.target
+        self.WriteLn(
+            "cmd_%(name)s_%(count)d = LD_LIBRARY_PATH="
+              "$(builddir)/lib.host:$(builddir)/lib.target:$$LD_LIBRARY_PATH; "
+              "export LD_LIBRARY_PATH; "
+              "%(cd_action)s%(mkdirs)s%(action)s" % {
+          'action': action,
+          'cd_action': cd_action,
+          'count': count,
+          'mkdirs': mkdirs,
+          'name': name,
+        })
+        self.WriteLn(
+            'quiet_cmd_%(name)s_%(count)d = RULE %(name)s_%(count)d $@' % {
+          'count': count,
+          'name': name,
+        })
+        self.WriteLn()
+        count += 1
+
+      outputs_variable = 'rule_%s_outputs' % name
+      self.WriteList(all_outputs, outputs_variable)
+      extra_outputs.append('$(%s)' % outputs_variable)
+
+      self.WriteLn('### Finished generating for rule: %s' % name)
+      self.WriteLn()
+    self.WriteLn('### Finished generating for all rules')
+    self.WriteLn('')
+
+
+  def WriteCopies(self, copies, extra_outputs, part_of_all):
+    """Write Makefile code for any 'copies' from the gyp input.
+
+    extra_outputs: a list that will be filled in with any outputs of this action
+                   (used to make other pieces dependent on this action)
+    part_of_all: flag indicating this target is part of 'all'
+    """
+    self.WriteLn('### Generated for copy rule.')
+
+    variable = StringToMakefileVariable(self.qualified_target + '_copies')
+    outputs = []
+    for copy in copies:
+      for path in copy['files']:
+        # Absolutify() may call normpath, and will strip trailing slashes.
+        path = Sourceify(self.Absolutify(path))
+        filename = os.path.split(path)[1]
+        output = Sourceify(self.Absolutify(os.path.join(copy['destination'],
+                                                        filename)))
+
+        # If the output path has variables in it, which happens in practice for
+        # 'copies', writing the environment as target-local doesn't work,
+        # because the variables are already needed for the target name.
+        # Copying the environment variables into global make variables doesn't
+        # work either, because then the .d files will potentially contain spaces
+        # after variable expansion, and .d file handling cannot handle spaces.
+        # As a workaround, manually expand variables at gyp time. Since 'copies'
+        # can't run scripts, there's no need to write the env then.
+        # WriteDoCmd() will escape spaces for .d files.
+        env = self.GetSortedXcodeEnv()
+        output = gyp.xcode_emulation.ExpandEnvVars(output, env)
+        path = gyp.xcode_emulation.ExpandEnvVars(path, env)
+        self.WriteDoCmd([output], [path], 'copy', part_of_all)
+        outputs.append(output)
+    self.WriteLn('%s = %s' % (variable, ' '.join(map(QuoteSpaces, outputs))))
+    extra_outputs.append('$(%s)' % variable)
+    self.WriteLn()
+
+
+  def WriteMacBundleResources(self, resources, bundle_deps):
+    """Writes Makefile code for 'mac_bundle_resources'."""
+    self.WriteLn('### Generated for mac_bundle_resources')
+
+    for output, res in gyp.xcode_emulation.GetMacBundleResources(
+        generator_default_variables['PRODUCT_DIR'], self.xcode_settings,
+        map(Sourceify, map(self.Absolutify, resources))):
+      self.WriteDoCmd([output], [res], 'mac_tool,,,copy-bundle-resource',
+                      part_of_all=True)
+      bundle_deps.append(output)
+
+
+  def WriteMacInfoPlist(self, bundle_deps):
+    """Write Makefile code for bundle Info.plist files."""
+    info_plist, out, defines, extra_env = gyp.xcode_emulation.GetMacInfoPlist(
+        generator_default_variables['PRODUCT_DIR'], self.xcode_settings,
+        lambda p: Sourceify(self.Absolutify(p)))
+    if not info_plist:
+      return
+    if defines:
+      # Create an intermediate file to store preprocessed results.
+      intermediate_plist = ('$(obj).$(TOOLSET)/$(TARGET)/' +
+          os.path.basename(info_plist))
+      self.WriteList(defines, intermediate_plist + ': INFOPLIST_DEFINES', '-D',
+          quoter=EscapeCppDefine)
+      self.WriteMakeRule([intermediate_plist], [info_plist],
+          ['$(call do_cmd,infoplist)',
+           # "Convert" the plist so that any weird whitespace changes from the
+           # preprocessor do not affect the XML parser in mac_tool.
+           '@plutil -convert xml1 $@ $@'])
+      info_plist = intermediate_plist
+    # plists can contain envvars and substitute them into the file.
+    self.WriteSortedXcodeEnv(
+        out, self.GetSortedXcodeEnv(additional_settings=extra_env))
+    self.WriteDoCmd([out], [info_plist], 'mac_tool,,,copy-info-plist',
+                    part_of_all=True)
+    bundle_deps.append(out)
+
+
+  def WriteSources(self, configs, deps, sources,
+                   extra_outputs, extra_link_deps,
+                   part_of_all, precompiled_header):
+    """Write Makefile code for any 'sources' from the gyp input.
+    These are source files necessary to build the current target.
+
+    configs, deps, sources: input from gyp.
+    extra_outputs: a list of extra outputs this action should be dependent on;
+                   used to serialize action/rules before compilation
+    extra_link_deps: a list that will be filled in with any outputs of
+                     compilation (to be used in link lines)
+    part_of_all: flag indicating this target is part of 'all'
+    """
+
+    # Write configuration-specific variables for CFLAGS, etc.
+    for configname in sorted(configs.keys()):
+      config = configs[configname]
+      self.WriteList(config.get('defines'), 'DEFS_%s' % configname, prefix='-D',
+          quoter=EscapeCppDefine)
+
+      if self.flavor == 'mac':
+        cflags = self.xcode_settings.GetCflags(configname)
+        cflags_c = self.xcode_settings.GetCflagsC(configname)
+        cflags_cc = self.xcode_settings.GetCflagsCC(configname)
+        cflags_objc = self.xcode_settings.GetCflagsObjC(configname)
+        cflags_objcc = self.xcode_settings.GetCflagsObjCC(configname)
+      else:
+        cflags = config.get('cflags')
+        cflags_c = config.get('cflags_c')
+        cflags_cc = config.get('cflags_cc')
+
+      self.WriteLn("# Flags passed to all source files.");
+      self.WriteList(cflags, 'CFLAGS_%s' % configname)
+      self.WriteLn("# Flags passed to only C files.");
+      self.WriteList(cflags_c, 'CFLAGS_C_%s' % configname)
+      self.WriteLn("# Flags passed to only C++ files.");
+      self.WriteList(cflags_cc, 'CFLAGS_CC_%s' % configname)
+      if self.flavor == 'mac':
+        self.WriteLn("# Flags passed to only ObjC files.");
+        self.WriteList(cflags_objc, 'CFLAGS_OBJC_%s' % configname)
+        self.WriteLn("# Flags passed to only ObjC++ files.");
+        self.WriteList(cflags_objcc, 'CFLAGS_OBJCC_%s' % configname)
+      includes = config.get('include_dirs')
+      if includes:
+        includes = map(Sourceify, map(self.Absolutify, includes))
+      self.WriteList(includes, 'INCS_%s' % configname, prefix='-I')
+
+    compilable = filter(Compilable, sources)
+    objs = map(self.Objectify, map(self.Absolutify, map(Target, compilable)))
+    self.WriteList(objs, 'OBJS')
+
+    for obj in objs:
+      assert ' ' not in obj, (
+          "Spaces in object filenames not supported (%s)"  % obj)
+    self.WriteLn('# Add to the list of files we specially track '
+                 'dependencies for.')
+    self.WriteLn('all_deps += $(OBJS)')
+    self.WriteLn()
+
+    # Make sure our dependencies are built first.
+    if deps:
+      self.WriteMakeRule(['$(OBJS)'], deps,
+                         comment = 'Make sure our dependencies are built '
+                                   'before any of us.',
+                         order_only = True)
+
+    # Make sure the actions and rules run first.
+    # If they generate any extra headers etc., the per-.o file dep tracking
+    # will catch the proper rebuilds, so order only is still ok here.
+    if extra_outputs:
+      self.WriteMakeRule(['$(OBJS)'], extra_outputs,
+                         comment = 'Make sure our actions/rules run '
+                                   'before any of us.',
+                         order_only = True)
+
+    pchdeps = precompiled_header.GetObjDependencies(compilable, objs )
+    if pchdeps:
+      self.WriteLn('# Dependencies from obj files to their precompiled headers')
+      for source, obj, gch in pchdeps:
+        self.WriteLn('%s: %s' % (obj, gch))
+      self.WriteLn('# End precompiled header dependencies')
+
+    if objs:
+      extra_link_deps.append('$(OBJS)')
+      self.WriteLn("""\
+# CFLAGS et al overrides must be target-local.
+# See "Target-specific Variable Values" in the GNU Make manual.""")
+      self.WriteLn("$(OBJS): TOOLSET := $(TOOLSET)")
+      self.WriteLn("$(OBJS): GYP_CFLAGS := "
+                   "$(DEFS_$(BUILDTYPE)) "
+                   "$(INCS_$(BUILDTYPE)) "
+                   "%s " % precompiled_header.GetInclude('c') +
+                   "$(CFLAGS_$(BUILDTYPE)) "
+                   "$(CFLAGS_C_$(BUILDTYPE))")
+      self.WriteLn("$(OBJS): GYP_CXXFLAGS := "
+                   "$(DEFS_$(BUILDTYPE)) "
+                   "$(INCS_$(BUILDTYPE)) "
+                   "%s " % precompiled_header.GetInclude('cc') +
+                   "$(CFLAGS_$(BUILDTYPE)) "
+                   "$(CFLAGS_CC_$(BUILDTYPE))")
+      if self.flavor == 'mac':
+        self.WriteLn("$(OBJS): GYP_OBJCFLAGS := "
+                     "$(DEFS_$(BUILDTYPE)) "
+                     "$(INCS_$(BUILDTYPE)) "
+                     "%s " % precompiled_header.GetInclude('m') +
+                     "$(CFLAGS_$(BUILDTYPE)) "
+                     "$(CFLAGS_C_$(BUILDTYPE)) "
+                     "$(CFLAGS_OBJC_$(BUILDTYPE))")
+        self.WriteLn("$(OBJS): GYP_OBJCXXFLAGS := "
+                     "$(DEFS_$(BUILDTYPE)) "
+                     "$(INCS_$(BUILDTYPE)) "
+                     "%s " % precompiled_header.GetInclude('mm') +
+                     "$(CFLAGS_$(BUILDTYPE)) "
+                     "$(CFLAGS_CC_$(BUILDTYPE)) "
+                     "$(CFLAGS_OBJCC_$(BUILDTYPE))")
+
+    self.WritePchTargets(precompiled_header.GetPchBuildCommands())
+
+    # If there are any object files in our input file list, link them into our
+    # output.
+    extra_link_deps += filter(Linkable, sources)
+
+    self.WriteLn()
+
+  def WritePchTargets(self, pch_commands):
+    """Writes make rules to compile prefix headers."""
+    if not pch_commands:
+      return
+
+    for gch, lang_flag, lang, input in pch_commands:
+      extra_flags = {
+        'c': '$(CFLAGS_C_$(BUILDTYPE))',
+        'cc': '$(CFLAGS_CC_$(BUILDTYPE))',
+        'm': '$(CFLAGS_C_$(BUILDTYPE)) $(CFLAGS_OBJC_$(BUILDTYPE))',
+        'mm': '$(CFLAGS_CC_$(BUILDTYPE)) $(CFLAGS_OBJCC_$(BUILDTYPE))',
+      }[lang]
+      var_name = {
+        'c': 'GYP_PCH_CFLAGS',
+        'cc': 'GYP_PCH_CXXFLAGS',
+        'm': 'GYP_PCH_OBJCFLAGS',
+        'mm': 'GYP_PCH_OBJCXXFLAGS',
+      }[lang]
+      self.WriteLn("%s: %s := %s " % (gch, var_name, lang_flag) +
+                   "$(DEFS_$(BUILDTYPE)) "
+                   "$(INCS_$(BUILDTYPE)) "
+                   "$(CFLAGS_$(BUILDTYPE)) " +
+                   extra_flags)
+
+      self.WriteLn('%s: %s FORCE_DO_CMD' % (gch, input))
+      self.WriteLn('\t@$(call do_cmd,pch_%s,1)' % lang)
+      self.WriteLn('')
+      assert ' ' not in gch, (
+          "Spaces in gch filenames not supported (%s)"  % gch)
+      self.WriteLn('all_deps += %s' % gch)
+      self.WriteLn('')
+
+
+  def ComputeOutputBasename(self, spec):
+    """Return the 'output basename' of a gyp spec.
+
+    E.g., the loadable module 'foobar' in directory 'baz' will produce
+      'libfoobar.so'
+    """
+    assert not self.is_mac_bundle
+
+    if self.flavor == 'mac' and self.type in (
+        'static_library', 'executable', 'shared_library', 'loadable_module'):
+      return self.xcode_settings.GetExecutablePath()
+
+    target = spec['target_name']
+    target_prefix = ''
+    target_ext = ''
+    if self.type == 'static_library':
+      if target[:3] == 'lib':
+        target = target[3:]
+      target_prefix = 'lib'
+      target_ext = '.a'
+    elif self.type in ('loadable_module', 'shared_library'):
+      if target[:3] == 'lib':
+        target = target[3:]
+      target_prefix = 'lib'
+      target_ext = '.so'
+    elif self.type == 'none':
+      target = '%s.stamp' % target
+    elif self.type != 'executable':
+      print ("ERROR: What output file should be generated?",
+             "type", self.type, "target", target)
+
+    target_prefix = spec.get('product_prefix', target_prefix)
+    target = spec.get('product_name', target)
+    product_ext = spec.get('product_extension')
+    if product_ext:
+      target_ext = '.' + product_ext
+
+    return target_prefix + target + target_ext
+
+
+  def _InstallImmediately(self):
+    return self.toolset == 'target' and self.flavor == 'mac' and self.type in (
+          'static_library', 'executable', 'shared_library', 'loadable_module')
+
+
+  def ComputeOutput(self, spec):
+    """Return the 'output' (full output path) of a gyp spec.
+
+    E.g., the loadable module 'foobar' in directory 'baz' will produce
+      '$(obj)/baz/libfoobar.so'
+    """
+    assert not self.is_mac_bundle
+
+    path = os.path.join('$(obj).' + self.toolset, self.path)
+    if self.type == 'executable' or self._InstallImmediately():
+      path = '$(builddir)'
+    path = spec.get('product_dir', path)
+    return os.path.join(path, self.ComputeOutputBasename(spec))
+
+
+  def ComputeMacBundleOutput(self, spec):
+    """Return the 'output' (full output path) to a bundle output directory."""
+    assert self.is_mac_bundle
+    path = generator_default_variables['PRODUCT_DIR']
+    return os.path.join(path, self.xcode_settings.GetWrapperName())
+
+
+  def ComputeMacBundleBinaryOutput(self, spec):
+    """Return the 'output' (full output path) to the binary in a bundle."""
+    path = generator_default_variables['PRODUCT_DIR']
+    return os.path.join(path, self.xcode_settings.GetExecutablePath())
+
+
+  def ComputeDeps(self, spec):
+    """Compute the dependencies of a gyp spec.
+
+    Returns a tuple (deps, link_deps), where each is a list of
+    filenames that will need to be put in front of make for either
+    building (deps) or linking (link_deps).
+    """
+    deps = []
+    link_deps = []
+    if 'dependencies' in spec:
+      deps.extend([target_outputs[dep] for dep in spec['dependencies']
+                   if target_outputs[dep]])
+      for dep in spec['dependencies']:
+        if dep in target_link_deps:
+          link_deps.append(target_link_deps[dep])
+      deps.extend(link_deps)
+      # TODO: It seems we need to transitively link in libraries (e.g. -lfoo)?
+      # This hack makes it work:
+      # link_deps.extend(spec.get('libraries', []))
+    return (gyp.common.uniquer(deps), gyp.common.uniquer(link_deps))
+
+
+  def WriteDependencyOnExtraOutputs(self, target, extra_outputs):
+    self.WriteMakeRule([self.output_binary], extra_outputs,
+                       comment = 'Build our special outputs first.',
+                       order_only = True)
+
+
+  def WriteTarget(self, spec, configs, deps, link_deps, bundle_deps,
+                  extra_outputs, part_of_all):
+    """Write Makefile code to produce the final target of the gyp spec.
+
+    spec, configs: input from gyp.
+    deps, link_deps: dependency lists; see ComputeDeps()
+    extra_outputs: any extra outputs that our target should depend on
+    part_of_all: flag indicating this target is part of 'all'
+    """
+
+    self.WriteLn('### Rules for final target.')
+
+    if extra_outputs:
+      self.WriteDependencyOnExtraOutputs(self.output_binary, extra_outputs)
+      self.WriteMakeRule(extra_outputs, deps,
+                         comment=('Preserve order dependency of '
+                                  'special output on deps.'),
+                         order_only = True)
+
+    target_postbuilds = {}
+    if self.type != 'none':
+      for configname in sorted(configs.keys()):
+        config = configs[configname]
+        if self.flavor == 'mac':
+          ldflags = self.xcode_settings.GetLdflags(configname,
+              generator_default_variables['PRODUCT_DIR'],
+              lambda p: Sourceify(self.Absolutify(p)))
+
+          # TARGET_POSTBUILDS_$(BUILDTYPE) is added to postbuilds later on.
+          gyp_to_build = gyp.common.InvertRelativePath(self.path)
+          target_postbuild = self.xcode_settings.AddImplicitPostbuilds(
+              configname,
+              QuoteSpaces(os.path.normpath(os.path.join(gyp_to_build,
+                                                        self.output))),
+              QuoteSpaces(os.path.normpath(os.path.join(gyp_to_build,
+                                                        self.output_binary))))
+          if target_postbuild:
+            target_postbuilds[configname] = target_postbuild
+        else:
+          ldflags = config.get('ldflags', [])
+          # Compute an rpath for this output if needed.
+          if any(dep.endswith('.so') or '.so.' in dep for dep in deps):
+            # We want to get the literal string "$ORIGIN" into the link command,
+            # so we need lots of escaping.
+            ldflags.append(r'-Wl,-rpath=\$$ORIGIN/lib.%s/' % self.toolset)
+            ldflags.append(r'-Wl,-rpath-link=\$(builddir)/lib.%s/' %
+                           self.toolset)
+        library_dirs = config.get('library_dirs', [])
+        ldflags += [('-L%s' % library_dir) for library_dir in library_dirs]
+        self.WriteList(ldflags, 'LDFLAGS_%s' % configname)
+        if self.flavor == 'mac':
+          self.WriteList(self.xcode_settings.GetLibtoolflags(configname),
+                         'LIBTOOLFLAGS_%s' % configname)
+      libraries = spec.get('libraries')
+      if libraries:
+        # Remove duplicate entries
+        libraries = gyp.common.uniquer(libraries)
+        if self.flavor == 'mac':
+          libraries = self.xcode_settings.AdjustLibraries(libraries)
+      self.WriteList(libraries, 'LIBS')
+      self.WriteLn('%s: GYP_LDFLAGS := $(LDFLAGS_$(BUILDTYPE))' %
+          QuoteSpaces(self.output_binary))
+      self.WriteLn('%s: LIBS := $(LIBS)' % QuoteSpaces(self.output_binary))
+
+      if self.flavor == 'mac':
+        self.WriteLn('%s: GYP_LIBTOOLFLAGS := $(LIBTOOLFLAGS_$(BUILDTYPE))' %
+            QuoteSpaces(self.output_binary))
+
+    # Postbuild actions. Like actions, but implicitly depend on the target's
+    # output.
+    postbuilds = []
+    if self.flavor == 'mac':
+      if target_postbuilds:
+        postbuilds.append('$(TARGET_POSTBUILDS_$(BUILDTYPE))')
+      postbuilds.extend(
+          gyp.xcode_emulation.GetSpecPostbuildCommands(spec))
+
+    if postbuilds:
+      # Envvars may be referenced by TARGET_POSTBUILDS_$(BUILDTYPE),
+      # so we must output its definition first, since we declare variables
+      # using ":=".
+      self.WriteSortedXcodeEnv(self.output, self.GetSortedXcodePostbuildEnv())
+
+      for configname in target_postbuilds:
+        self.WriteLn('%s: TARGET_POSTBUILDS_%s := %s' %
+            (QuoteSpaces(self.output),
+             configname,
+             gyp.common.EncodePOSIXShellList(target_postbuilds[configname])))
+
+      # Postbuilds expect to be run in the gyp file's directory, so insert an
+      # implicit postbuild to cd to there.
+      postbuilds.insert(0, gyp.common.EncodePOSIXShellList(['cd', self.path]))
+      for i in xrange(len(postbuilds)):
+        if not postbuilds[i].startswith('$'):
+          postbuilds[i] = EscapeShellArgument(postbuilds[i])
+      self.WriteLn('%s: builddir := $(abs_builddir)' % QuoteSpaces(self.output))
+      self.WriteLn('%s: POSTBUILDS := %s' % (
+          QuoteSpaces(self.output), ' '.join(postbuilds)))
+
+    # A bundle directory depends on its dependencies such as bundle resources
+    # and bundle binary. When all dependencies have been built, the bundle
+    # needs to be packaged.
+    if self.is_mac_bundle:
+      # If the framework doesn't contain a binary, then nothing depends
+      # on the actions -- make the framework depend on them directly too.
+      self.WriteDependencyOnExtraOutputs(self.output, extra_outputs)
+
+      # Bundle dependencies. Note that the code below adds actions to this
+      # target, so if you move these two lines, move the lines below as well.
+      self.WriteList(map(QuoteSpaces, bundle_deps), 'BUNDLE_DEPS')
+      self.WriteLn('%s: $(BUNDLE_DEPS)' % QuoteSpaces(self.output))
+
+      # After the framework is built, package it. Needs to happen before
+      # postbuilds, since postbuilds depend on this.
+      if self.type in ('shared_library', 'loadable_module'):
+        self.WriteLn('\t@$(call do_cmd,mac_package_framework,,,%s)' %
+            self.xcode_settings.GetFrameworkVersion())
+
+      # Bundle postbuilds can depend on the whole bundle, so run them after
+      # the bundle is packaged, not already after the bundle binary is done.
+      if postbuilds:
+        self.WriteLn('\t@$(call do_postbuilds)')
+      postbuilds = []  # Don't write postbuilds for target's output.
+
+      # Needed by test/mac/gyptest-rebuild.py.
+      self.WriteLn('\t@true  # No-op, used by tests')
+
+      # Since this target depends on binary and resources which are in
+      # nested subfolders, the framework directory will be older than
+      # its dependencies usually. To prevent this rule from executing
+      # on every build (expensive, especially with postbuilds), expliclity
+      # update the time on the framework directory.
+      self.WriteLn('\t@touch -c %s' % QuoteSpaces(self.output))
+
+    if postbuilds:
+      assert not self.is_mac_bundle, ('Postbuilds for bundles should be done '
+          'on the bundle, not the binary (target \'%s\')' % self.target)
+      assert 'product_dir' not in spec, ('Postbuilds do not work with '
+          'custom product_dir')
+
+    if self.type == 'executable':
+      self.WriteLn('%s: LD_INPUTS := %s' % (
+          QuoteSpaces(self.output_binary),
+          ' '.join(map(QuoteSpaces, link_deps))))
+      if self.toolset == 'host' and self.flavor == 'android':
+        self.WriteDoCmd([self.output_binary], link_deps, 'link_host',
+                        part_of_all, postbuilds=postbuilds)
+      else:
+        self.WriteDoCmd([self.output_binary], link_deps, 'link', part_of_all,
+                        postbuilds=postbuilds)
+
+    elif self.type == 'static_library':
+      for link_dep in link_deps:
+        assert ' ' not in link_dep, (
+            "Spaces in alink input filenames not supported (%s)"  % link_dep)
+      if (self.flavor not in ('mac', 'openbsd', 'win') and not
+          self.is_standalone_static_library):
+        self.WriteDoCmd([self.output_binary], link_deps, 'alink_thin',
+                        part_of_all, postbuilds=postbuilds)
+      else:
+        self.WriteDoCmd([self.output_binary], link_deps, 'alink', part_of_all,
+                        postbuilds=postbuilds)
+    elif self.type == 'shared_library':
+      self.WriteLn('%s: LD_INPUTS := %s' % (
+            QuoteSpaces(self.output_binary),
+            ' '.join(map(QuoteSpaces, link_deps))))
+      self.WriteDoCmd([self.output_binary], link_deps, 'solink', part_of_all,
+                      postbuilds=postbuilds)
+    elif self.type == 'loadable_module':
+      for link_dep in link_deps:
+        assert ' ' not in link_dep, (
+            "Spaces in module input filenames not supported (%s)"  % link_dep)
+      if self.toolset == 'host' and self.flavor == 'android':
+        self.WriteDoCmd([self.output_binary], link_deps, 'solink_module_host',
+                        part_of_all, postbuilds=postbuilds)
+      else:
+        self.WriteDoCmd(
+            [self.output_binary], link_deps, 'solink_module', part_of_all,
+            postbuilds=postbuilds)
+    elif self.type == 'none':
+      # Write a stamp line.
+      self.WriteDoCmd([self.output_binary], deps, 'touch', part_of_all,
+                      postbuilds=postbuilds)
+    else:
+      print "WARNING: no output for", self.type, target
+
+    # Add an alias for each target (if there are any outputs).
+    # Installable target aliases are created below.
+    if ((self.output and self.output != self.target) and
+        (self.type not in self._INSTALLABLE_TARGETS)):
+      self.WriteMakeRule([self.target], [self.output],
+                         comment='Add target alias', phony = True)
+      if part_of_all:
+        self.WriteMakeRule(['all'], [self.target],
+                           comment = 'Add target alias to "all" target.',
+                           phony = True)
+
+    # Add special-case rules for our installable targets.
+    # 1) They need to install to the build dir or "product" dir.
+    # 2) They get shortcuts for building (e.g. "make chrome").
+    # 3) They are part of "make all".
+    if (self.type in self._INSTALLABLE_TARGETS or
+        self.is_standalone_static_library):
+      if self.type == 'shared_library':
+        file_desc = 'shared library'
+      elif self.type == 'static_library':
+        file_desc = 'static library'
+      else:
+        file_desc = 'executable'
+      install_path = self._InstallableTargetInstallPath()
+      installable_deps = [self.output]
+      if (self.flavor == 'mac' and not 'product_dir' in spec and
+          self.toolset == 'target'):
+        # On mac, products are created in install_path immediately.
+        assert install_path == self.output, '%s != %s' % (
+            install_path, self.output)
+
+      # Point the target alias to the final binary output.
+      self.WriteMakeRule([self.target], [install_path],
+                         comment='Add target alias', phony = True)
+      if install_path != self.output:
+        assert not self.is_mac_bundle  # See comment a few lines above.
+        self.WriteDoCmd([install_path], [self.output], 'copy',
+                        comment = 'Copy this to the %s output path.' %
+                        file_desc, part_of_all=part_of_all)
+        installable_deps.append(install_path)
+      if self.output != self.alias and self.alias != self.target:
+        self.WriteMakeRule([self.alias], installable_deps,
+                           comment = 'Short alias for building this %s.' %
+                           file_desc, phony = True)
+      if part_of_all:
+        self.WriteMakeRule(['all'], [install_path],
+                           comment = 'Add %s to "all" target.' % file_desc,
+                           phony = True)
+
+
+  def WriteList(self, value_list, variable=None, prefix='',
+                quoter=QuoteIfNecessary):
+    """Write a variable definition that is a list of values.
+
+    E.g. WriteList(['a','b'], 'foo', prefix='blah') writes out
+         foo = blaha blahb
+    but in a pretty-printed style.
+    """
+    values = ''
+    if value_list:
+      value_list = [quoter(prefix + l) for l in value_list]
+      values = ' \\\n\t' + ' \\\n\t'.join(value_list)
+    self.fp.write('%s :=%s\n\n' % (variable, values))
+
+
+  def WriteDoCmd(self, outputs, inputs, command, part_of_all, comment=None,
+                 postbuilds=False):
+    """Write a Makefile rule that uses do_cmd.
+
+    This makes the outputs dependent on the command line that was run,
+    as well as support the V= make command line flag.
+    """
+    suffix = ''
+    if postbuilds:
+      assert ',' not in command
+      suffix = ',,1'  # Tell do_cmd to honor $POSTBUILDS
+    self.WriteMakeRule(outputs, inputs,
+                       actions = ['$(call do_cmd,%s%s)' % (command, suffix)],
+                       comment = comment,
+                       force = True)
+    # Add our outputs to the list of targets we read depfiles from.
+    # all_deps is only used for deps file reading, and for deps files we replace
+    # spaces with ? because escaping doesn't work with make's $(sort) and
+    # other functions.
+    outputs = [QuoteSpaces(o, SPACE_REPLACEMENT) for o in outputs]
+    self.WriteLn('all_deps += %s' % ' '.join(outputs))
+
+
+  def WriteMakeRule(self, outputs, inputs, actions=None, comment=None,
+                    order_only=False, force=False, phony=False):
+    """Write a Makefile rule, with some extra tricks.
+
+    outputs: a list of outputs for the rule (note: this is not directly
+             supported by make; see comments below)
+    inputs: a list of inputs for the rule
+    actions: a list of shell commands to run for the rule
+    comment: a comment to put in the Makefile above the rule (also useful
+             for making this Python script's code self-documenting)
+    order_only: if true, makes the dependency order-only
+    force: if true, include FORCE_DO_CMD as an order-only dep
+    phony: if true, the rule does not actually generate the named output, the
+           output is just a name to run the rule
+    """
+    outputs = map(QuoteSpaces, outputs)
+    inputs = map(QuoteSpaces, inputs)
+
+    if comment:
+      self.WriteLn('# ' + comment)
+    if phony:
+      self.WriteLn('.PHONY: ' + ' '.join(outputs))
+    # TODO(evanm): just make order_only a list of deps instead of these hacks.
+    if order_only:
+      order_insert = '| '
+      pick_output = ' '.join(outputs)
+    else:
+      order_insert = ''
+      pick_output = outputs[0]
+    if force:
+      force_append = ' FORCE_DO_CMD'
+    else:
+      force_append = ''
+    if actions:
+      self.WriteLn("%s: TOOLSET := $(TOOLSET)" % outputs[0])
+    self.WriteLn('%s: %s%s%s' % (pick_output, order_insert, ' '.join(inputs),
+                                 force_append))
+    if actions:
+      for action in actions:
+        self.WriteLn('\t%s' % action)
+    if not order_only and len(outputs) > 1:
+      # If we have more than one output, a rule like
+      #   foo bar: baz
+      # that for *each* output we must run the action, potentially
+      # in parallel.  That is not what we're trying to write -- what
+      # we want is that we run the action once and it generates all
+      # the files.
+      # http://www.gnu.org/software/hello/manual/automake/Multiple-Outputs.html
+      # discusses this problem and has this solution:
+      # 1) Write the naive rule that would produce parallel runs of
+      # the action.
+      # 2) Make the outputs seralized on each other, so we won't start
+      # a parallel run until the first run finishes, at which point
+      # we'll have generated all the outputs and we're done.
+      self.WriteLn('%s: %s' % (' '.join(outputs[1:]), outputs[0]))
+      # Add a dummy command to the "extra outputs" rule, otherwise make seems to
+      # think these outputs haven't (couldn't have?) changed, and thus doesn't
+      # flag them as changed (i.e. include in '$?') when evaluating dependent
+      # rules, which in turn causes do_cmd() to skip running dependent commands.
+      self.WriteLn('%s: ;' % (' '.join(outputs[1:])))
+    self.WriteLn()
+
+
+  def WriteAndroidNdkModuleRule(self, module_name, all_sources, link_deps):
+    """Write a set of LOCAL_XXX definitions for Android NDK.
+
+    These variable definitions will be used by Android NDK but do nothing for
+    non-Android applications.
+
+    Arguments:
+      module_name: Android NDK module name, which must be unique among all
+          module names.
+      all_sources: A list of source files (will be filtered by Compilable).
+      link_deps: A list of link dependencies, which must be sorted in
+          the order from dependencies to dependents.
+    """
+    if self.type not in ('executable', 'shared_library', 'static_library'):
+      return
+
+    self.WriteLn('# Variable definitions for Android applications')
+    self.WriteLn('include $(CLEAR_VARS)')
+    self.WriteLn('LOCAL_MODULE := ' + module_name)
+    self.WriteLn('LOCAL_CFLAGS := $(CFLAGS_$(BUILDTYPE)) '
+                 '$(DEFS_$(BUILDTYPE)) '
+                 # LOCAL_CFLAGS is applied to both of C and C++.  There is
+                 # no way to specify $(CFLAGS_C_$(BUILDTYPE)) only for C
+                 # sources.
+                 '$(CFLAGS_C_$(BUILDTYPE)) '
+                 # $(INCS_$(BUILDTYPE)) includes the prefix '-I' while
+                 # LOCAL_C_INCLUDES does not expect it.  So put it in
+                 # LOCAL_CFLAGS.
+                 '$(INCS_$(BUILDTYPE))')
+    # LOCAL_CXXFLAGS is obsolete and LOCAL_CPPFLAGS is preferred.
+    self.WriteLn('LOCAL_CPPFLAGS := $(CFLAGS_CC_$(BUILDTYPE))')
+    self.WriteLn('LOCAL_C_INCLUDES :=')
+    self.WriteLn('LOCAL_LDLIBS := $(LDFLAGS_$(BUILDTYPE)) $(LIBS)')
+
+    # Detect the C++ extension.
+    cpp_ext = {'.cc': 0, '.cpp': 0, '.cxx': 0}
+    default_cpp_ext = '.cpp'
+    for filename in all_sources:
+      ext = os.path.splitext(filename)[1]
+      if ext in cpp_ext:
+        cpp_ext[ext] += 1
+        if cpp_ext[ext] > cpp_ext[default_cpp_ext]:
+          default_cpp_ext = ext
+    self.WriteLn('LOCAL_CPP_EXTENSION := ' + default_cpp_ext)
+
+    self.WriteList(map(self.Absolutify, filter(Compilable, all_sources)),
+                   'LOCAL_SRC_FILES')
+
+    # Filter out those which do not match prefix and suffix and produce
+    # the resulting list without prefix and suffix.
+    def DepsToModules(deps, prefix, suffix):
+      modules = []
+      for filepath in deps:
+        filename = os.path.basename(filepath)
+        if filename.startswith(prefix) and filename.endswith(suffix):
+          modules.append(filename[len(prefix):-len(suffix)])
+      return modules
+
+    # Retrieve the default value of 'SHARED_LIB_SUFFIX'
+    params = {'flavor': 'linux'}
+    default_variables = {}
+    CalculateVariables(default_variables, params)
+
+    self.WriteList(
+        DepsToModules(link_deps,
+                      generator_default_variables['SHARED_LIB_PREFIX'],
+                      default_variables['SHARED_LIB_SUFFIX']),
+        'LOCAL_SHARED_LIBRARIES')
+    self.WriteList(
+        DepsToModules(link_deps,
+                      generator_default_variables['STATIC_LIB_PREFIX'],
+                      generator_default_variables['STATIC_LIB_SUFFIX']),
+        'LOCAL_STATIC_LIBRARIES')
+
+    if self.type == 'executable':
+      self.WriteLn('include $(BUILD_EXECUTABLE)')
+    elif self.type == 'shared_library':
+      self.WriteLn('include $(BUILD_SHARED_LIBRARY)')
+    elif self.type == 'static_library':
+      self.WriteLn('include $(BUILD_STATIC_LIBRARY)')
+    self.WriteLn()
+
+
+  def WriteLn(self, text=''):
+    self.fp.write(text + '\n')
+
+
+  def GetSortedXcodeEnv(self, additional_settings=None):
+    return gyp.xcode_emulation.GetSortedXcodeEnv(
+        self.xcode_settings, "$(abs_builddir)",
+        os.path.join("$(abs_srcdir)", self.path), "$(BUILDTYPE)",
+        additional_settings)
+
+
+  def GetSortedXcodePostbuildEnv(self):
+    # CHROMIUM_STRIP_SAVE_FILE is a chromium-specific hack.
+    # TODO(thakis): It would be nice to have some general mechanism instead.
+    strip_save_file = self.xcode_settings.GetPerTargetSetting(
+        'CHROMIUM_STRIP_SAVE_FILE', '')
+    # Even if strip_save_file is empty, explicitly write it. Else a postbuild
+    # might pick up an export from an earlier target.
+    return self.GetSortedXcodeEnv(
+        additional_settings={'CHROMIUM_STRIP_SAVE_FILE': strip_save_file})
+
+
+  def WriteSortedXcodeEnv(self, target, env):
+    for k, v in env:
+      # For
+      #  foo := a\ b
+      # the escaped space does the right thing. For
+      #  export foo := a\ b
+      # it does not -- the backslash is written to the env as literal character.
+      # So don't escape spaces in |env[k]|.
+      self.WriteLn('%s: export %s := %s' % (QuoteSpaces(target), k, v))
+
+
+  def Objectify(self, path):
+    """Convert a path to its output directory form."""
+    if '$(' in path:
+      path = path.replace('$(obj)/', '$(obj).%s/$(TARGET)/' % self.toolset)
+    if not '$(obj)' in path:
+      path = '$(obj).%s/$(TARGET)/%s' % (self.toolset, path)
+    return path
+
+
+  def Pchify(self, path, lang):
+    """Convert a prefix header path to its output directory form."""
+    path = self.Absolutify(path)
+    if '$(' in path:
+      path = path.replace('$(obj)/', '$(obj).%s/$(TARGET)/pch-%s' %
+                          (self.toolset, lang))
+      return path
+    return '$(obj).%s/$(TARGET)/pch-%s/%s' % (self.toolset, lang, path)
+
+
+  def Absolutify(self, path):
+    """Convert a subdirectory-relative path into a base-relative path.
+    Skips over paths that contain variables."""
+    if '$(' in path:
+      # Don't call normpath in this case, as it might collapse the
+      # path too aggressively if it features '..'. However it's still
+      # important to strip trailing slashes.
+      return path.rstrip('/')
+    return os.path.normpath(os.path.join(self.path, path))
+
+
+  def ExpandInputRoot(self, template, expansion, dirname):
+    if '%(INPUT_ROOT)s' not in template and '%(INPUT_DIRNAME)s' not in template:
+      return template
+    path = template % {
+        'INPUT_ROOT': expansion,
+        'INPUT_DIRNAME': dirname,
+        }
+    return path
+
+
+  def _InstallableTargetInstallPath(self):
+    """Returns the location of the final output for an installable target."""
+    # Xcode puts shared_library results into PRODUCT_DIR, and some gyp files
+    # rely on this. Emulate this behavior for mac.
+    if (self.type == 'shared_library' and
+        (self.flavor != 'mac' or self.toolset != 'target')):
+      # Install all shared libs into a common directory (per toolset) for
+      # convenient access with LD_LIBRARY_PATH.
+      return '$(builddir)/lib.%s/%s' % (self.toolset, self.alias)
+    return '$(builddir)/' + self.alias
+
+
+def WriteAutoRegenerationRule(params, root_makefile, makefile_name,
+                              build_files):
+  """Write the target to regenerate the Makefile."""
+  options = params['options']
+  build_files_args = [gyp.common.RelativePath(filename, options.toplevel_dir)
+                      for filename in params['build_files_arg']]
+
+  gyp_binary = gyp.common.FixIfRelativePath(params['gyp_binary'],
+                                            options.toplevel_dir)
+  if not gyp_binary.startswith(os.sep):
+    gyp_binary = os.path.join('.', gyp_binary)
+
+  root_makefile.write(
+      "quiet_cmd_regen_makefile = ACTION Regenerating $@\n"
+      "cmd_regen_makefile = cd $(srcdir); %(cmd)s\n"
+      "%(makefile_name)s: %(deps)s\n"
+      "\t$(call do_cmd,regen_makefile)\n\n" % {
+          'makefile_name': makefile_name,
+          'deps': ' '.join(map(Sourceify, build_files)),
+          'cmd': gyp.common.EncodePOSIXShellList(
+                     [gyp_binary, '-fmake'] +
+                     gyp.RegenerateFlags(options) +
+                     build_files_args)})
+
+
+def PerformBuild(data, configurations, params):
+  options = params['options']
+  for config in configurations:
+    arguments = ['make']
+    if options.toplevel_dir and options.toplevel_dir != '.':
+      arguments += '-C', options.toplevel_dir
+    arguments.append('BUILDTYPE=' + config)
+    print 'Building [%s]: %s' % (config, arguments)
+    subprocess.check_call(arguments)
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  options = params['options']
+  flavor = gyp.common.GetFlavor(params)
+  generator_flags = params.get('generator_flags', {})
+  builddir_name = generator_flags.get('output_dir', 'out')
+  android_ndk_version = generator_flags.get('android_ndk_version', None)
+  default_target = generator_flags.get('default_target', 'all')
+
+  def CalculateMakefilePath(build_file, base_name):
+    """Determine where to write a Makefile for a given gyp file."""
+    # Paths in gyp files are relative to the .gyp file, but we want
+    # paths relative to the source root for the master makefile.  Grab
+    # the path of the .gyp file as the base to relativize against.
+    # E.g. "foo/bar" when we're constructing targets for "foo/bar/baz.gyp".
+    base_path = gyp.common.RelativePath(os.path.dirname(build_file),
+                                        options.depth)
+    # We write the file in the base_path directory.
+    output_file = os.path.join(options.depth, base_path, base_name)
+    if options.generator_output:
+      output_file = os.path.join(
+          options.depth, options.generator_output, base_path, base_name)
+    base_path = gyp.common.RelativePath(os.path.dirname(build_file),
+                                        options.toplevel_dir)
+    return base_path, output_file
+
+  # TODO:  search for the first non-'Default' target.  This can go
+  # away when we add verification that all targets have the
+  # necessary configurations.
+  default_configuration = None
+  toolsets = set([target_dicts[target]['toolset'] for target in target_list])
+  for target in target_list:
+    spec = target_dicts[target]
+    if spec['default_configuration'] != 'Default':
+      default_configuration = spec['default_configuration']
+      break
+  if not default_configuration:
+    default_configuration = 'Default'
+
+  srcdir = '.'
+  makefile_name = 'Makefile' + options.suffix
+  makefile_path = os.path.join(options.toplevel_dir, makefile_name)
+  if options.generator_output:
+    global srcdir_prefix
+    makefile_path = os.path.join(
+        options.toplevel_dir, options.generator_output, makefile_name)
+    srcdir = gyp.common.RelativePath(srcdir, options.generator_output)
+    srcdir_prefix = '$(srcdir)/'
+
+  flock_command= 'flock'
+  header_params = {
+      'default_target': default_target,
+      'builddir': builddir_name,
+      'default_configuration': default_configuration,
+      'flock': flock_command,
+      'flock_index': 1,
+      'link_commands': LINK_COMMANDS_LINUX,
+      'extra_commands': '',
+      'srcdir': srcdir,
+    }
+  if flavor == 'mac':
+    flock_command = './gyp-mac-tool flock'
+    header_params.update({
+        'flock': flock_command,
+        'flock_index': 2,
+        'link_commands': LINK_COMMANDS_MAC,
+        'extra_commands': SHARED_HEADER_MAC_COMMANDS,
+    })
+  elif flavor == 'android':
+    header_params.update({
+        'link_commands': LINK_COMMANDS_ANDROID,
+    })
+  elif flavor == 'solaris':
+    header_params.update({
+        'flock': './gyp-flock-tool flock',
+        'flock_index': 2,
+    })
+  elif flavor == 'freebsd':
+    # Note: OpenBSD has sysutils/flock. lockf seems to be FreeBSD specific.
+    header_params.update({
+        'flock': 'lockf',
+    })
+  elif flavor == 'aix':
+    header_params.update({
+        'link_commands': LINK_COMMANDS_AIX,
+        'flock': './gyp-flock-tool flock',
+        'flock_index': 2,
+    })
+
+  header_params.update({
+    'CC.target':   GetEnvironFallback(('CC_target', 'CC'), '$(CC)'),
+    'AR.target':   GetEnvironFallback(('AR_target', 'AR'), '$(AR)'),
+    'CXX.target':  GetEnvironFallback(('CXX_target', 'CXX'), '$(CXX)'),
+    'LINK.target': GetEnvironFallback(('LINK_target', 'LINK'), '$(LINK)'),
+    'CC.host':     GetEnvironFallback(('CC_host',), 'gcc'),
+    'AR.host':     GetEnvironFallback(('AR_host',), 'ar'),
+    'CXX.host':    GetEnvironFallback(('CXX_host',), 'g++'),
+    'LINK.host':   GetEnvironFallback(('LINK_host',), '$(CXX.host)'),
+  })
+
+  build_file, _, _ = gyp.common.ParseQualifiedTarget(target_list[0])
+  make_global_settings_array = data[build_file].get('make_global_settings', [])
+  wrappers = {}
+  wrappers['LINK'] = '%s $(builddir)/linker.lock' % flock_command
+  for key, value in make_global_settings_array:
+    if key.endswith('_wrapper'):
+      wrappers[key[:-len('_wrapper')]] = '$(abspath %s)' % value
+  make_global_settings = ''
+  for key, value in make_global_settings_array:
+    if re.match('.*_wrapper', key):
+      continue
+    if value[0] != '$':
+      value = '$(abspath %s)' % value
+    wrapper = wrappers.get(key)
+    if wrapper:
+      value = '%s %s' % (wrapper, value)
+      del wrappers[key]
+    if key in ('CC', 'CC.host', 'CXX', 'CXX.host'):
+      make_global_settings += (
+          'ifneq (,$(filter $(origin %s), undefined default))\n' % key)
+      # Let gyp-time envvars win over global settings.
+      env_key = key.replace('.', '_')  # CC.host -> CC_host
+      if env_key in os.environ:
+        value = os.environ[env_key]
+      make_global_settings += '  %s = %s\n' % (key, value)
+      make_global_settings += 'endif\n'
+    else:
+      make_global_settings += '%s ?= %s\n' % (key, value)
+  # TODO(ukai): define cmd when only wrapper is specified in
+  # make_global_settings.
+
+  header_params['make_global_settings'] = make_global_settings
+
+  gyp.common.EnsureDirExists(makefile_path)
+  root_makefile = open(makefile_path, 'w')
+  root_makefile.write(SHARED_HEADER % header_params)
+  # Currently any versions have the same effect, but in future the behavior
+  # could be different.
+  if android_ndk_version:
+    root_makefile.write(
+        '# Define LOCAL_PATH for build of Android applications.\n'
+        'LOCAL_PATH := $(call my-dir)\n'
+        '\n')
+  for toolset in toolsets:
+    root_makefile.write('TOOLSET := %s\n' % toolset)
+    WriteRootHeaderSuffixRules(root_makefile)
+
+  # Put build-time support tools next to the root Makefile.
+  dest_path = os.path.dirname(makefile_path)
+  gyp.common.CopyTool(flavor, dest_path)
+
+  # Find the list of targets that derive from the gyp file(s) being built.
+  needed_targets = set()
+  for build_file in params['build_files']:
+    for target in gyp.common.AllTargets(target_list, target_dicts, build_file):
+      needed_targets.add(target)
+
+  build_files = set()
+  include_list = set()
+  for qualified_target in target_list:
+    build_file, target, toolset = gyp.common.ParseQualifiedTarget(
+        qualified_target)
+
+    this_make_global_settings = data[build_file].get('make_global_settings', [])
+    assert make_global_settings_array == this_make_global_settings, (
+        "make_global_settings needs to be the same for all targets. %s vs. %s" %
+        (this_make_global_settings, make_global_settings))
+
+    build_files.add(gyp.common.RelativePath(build_file, options.toplevel_dir))
+    included_files = data[build_file]['included_files']
+    for included_file in included_files:
+      # The included_files entries are relative to the dir of the build file
+      # that included them, so we have to undo that and then make them relative
+      # to the root dir.
+      relative_include_file = gyp.common.RelativePath(
+          gyp.common.UnrelativePath(included_file, build_file),
+          options.toplevel_dir)
+      abs_include_file = os.path.abspath(relative_include_file)
+      # If the include file is from the ~/.gyp dir, we should use absolute path
+      # so that relocating the src dir doesn't break the path.
+      if (params['home_dot_gyp'] and
+          abs_include_file.startswith(params['home_dot_gyp'])):
+        build_files.add(abs_include_file)
+      else:
+        build_files.add(relative_include_file)
+
+    base_path, output_file = CalculateMakefilePath(build_file,
+        target + '.' + toolset + options.suffix + '.mk')
+
+    spec = target_dicts[qualified_target]
+    configs = spec['configurations']
+
+    if flavor == 'mac':
+      gyp.xcode_emulation.MergeGlobalXcodeSettingsToSpec(data[build_file], spec)
+
+    writer = MakefileWriter(generator_flags, flavor)
+    writer.Write(qualified_target, base_path, output_file, spec, configs,
+                 part_of_all=qualified_target in needed_targets)
+
+    # Our root_makefile lives at the source root.  Compute the relative path
+    # from there to the output_file for including.
+    mkfile_rel_path = gyp.common.RelativePath(output_file,
+                                              os.path.dirname(makefile_path))
+    include_list.add(mkfile_rel_path)
+
+  # Write out per-gyp (sub-project) Makefiles.
+  depth_rel_path = gyp.common.RelativePath(options.depth, os.getcwd())
+  for build_file in build_files:
+    # The paths in build_files were relativized above, so undo that before
+    # testing against the non-relativized items in target_list and before
+    # calculating the Makefile path.
+    build_file = os.path.join(depth_rel_path, build_file)
+    gyp_targets = [target_dicts[target]['target_name'] for target in target_list
+                   if target.startswith(build_file) and
+                   target in needed_targets]
+    # Only generate Makefiles for gyp files with targets.
+    if not gyp_targets:
+      continue
+    base_path, output_file = CalculateMakefilePath(build_file,
+        os.path.splitext(os.path.basename(build_file))[0] + '.Makefile')
+    makefile_rel_path = gyp.common.RelativePath(os.path.dirname(makefile_path),
+                                                os.path.dirname(output_file))
+    writer.WriteSubMake(output_file, makefile_rel_path, gyp_targets,
+                        builddir_name)
+
+
+  # Write out the sorted list of includes.
+  root_makefile.write('\n')
+  for include_file in sorted(include_list):
+    # We wrap each .mk include in an if statement so users can tell make to
+    # not load a file by setting NO_LOAD.  The below make code says, only
+    # load the .mk file if the .mk filename doesn't start with a token in
+    # NO_LOAD.
+    root_makefile.write(
+        "ifeq ($(strip $(foreach prefix,$(NO_LOAD),\\\n"
+        "    $(findstring $(join ^,$(prefix)),\\\n"
+        "                 $(join ^," + include_file + ")))),)\n")
+    root_makefile.write("  include " + include_file + "\n")
+    root_makefile.write("endif\n")
+  root_makefile.write('\n')
+
+  if (not generator_flags.get('standalone')
+      and generator_flags.get('auto_regeneration', True)):
+    WriteAutoRegenerationRule(params, root_makefile, makefile_name, build_files)
+
+  root_makefile.write(SHARED_FOOTER)
+
+  root_makefile.close()
diff --git a/deps/gyp/pylib/gyp/generator/msvs.py b/deps/gyp/pylib/gyp/generator/msvs.py
new file mode 100644
index 0000000000..9dcdab6cfa
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/msvs.py
@@ -0,0 +1,3335 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import collections
+import copy
+import ntpath
+import os
+import posixpath
+import re
+import subprocess
+import sys
+
+import gyp.common
+import gyp.easy_xml as easy_xml
+import gyp.MSVSNew as MSVSNew
+import gyp.MSVSProject as MSVSProject
+import gyp.MSVSSettings as MSVSSettings
+import gyp.MSVSToolFile as MSVSToolFile
+import gyp.MSVSUserFile as MSVSUserFile
+import gyp.MSVSUtil as MSVSUtil
+import gyp.MSVSVersion as MSVSVersion
+from gyp.common import GypError
+
+# TODO: Remove once bots are on 2.7, http://crbug.com/241769
+def _import_OrderedDict():
+  import collections
+  try:
+    return collections.OrderedDict
+  except AttributeError:
+    import gyp.ordered_dict
+    return gyp.ordered_dict.OrderedDict
+OrderedDict = _import_OrderedDict()
+
+
+# Regular expression for validating Visual Studio GUIDs.  If the GUID
+# contains lowercase hex letters, MSVS will be fine. However,
+# IncrediBuild BuildConsole will parse the solution file, but then
+# silently skip building the target causing hard to track down errors.
+# Note that this only happens with the BuildConsole, and does not occur
+# if IncrediBuild is executed from inside Visual Studio.  This regex
+# validates that the string looks like a GUID with all uppercase hex
+# letters.
+VALID_MSVS_GUID_CHARS = re.compile('^[A-F0-9\-]+$')
+
+
+generator_default_variables = {
+    'EXECUTABLE_PREFIX': '',
+    'EXECUTABLE_SUFFIX': '.exe',
+    'STATIC_LIB_PREFIX': '',
+    'SHARED_LIB_PREFIX': '',
+    'STATIC_LIB_SUFFIX': '.lib',
+    'SHARED_LIB_SUFFIX': '.dll',
+    'INTERMEDIATE_DIR': '$(IntDir)',
+    'SHARED_INTERMEDIATE_DIR': '$(OutDir)obj/global_intermediate',
+    'OS': 'win',
+    'PRODUCT_DIR': '$(OutDir)',
+    'LIB_DIR': '$(OutDir)lib',
+    'RULE_INPUT_ROOT': '$(InputName)',
+    'RULE_INPUT_DIRNAME': '$(InputDir)',
+    'RULE_INPUT_EXT': '$(InputExt)',
+    'RULE_INPUT_NAME': '$(InputFileName)',
+    'RULE_INPUT_PATH': '$(InputPath)',
+    'CONFIGURATION_NAME': '$(ConfigurationName)',
+}
+
+
+# The msvs specific sections that hold paths
+generator_additional_path_sections = [
+    'msvs_cygwin_dirs',
+    'msvs_props',
+]
+
+
+generator_additional_non_configuration_keys = [
+    'msvs_cygwin_dirs',
+    'msvs_cygwin_shell',
+    'msvs_large_pdb',
+    'msvs_shard',
+    'msvs_external_builder',
+    'msvs_external_builder_out_dir',
+    'msvs_external_builder_build_cmd',
+    'msvs_external_builder_clean_cmd',
+]
+
+
+# List of precompiled header related keys.
+precomp_keys = [
+    'msvs_precompiled_header',
+    'msvs_precompiled_source',
+]
+
+
+cached_username = None
+
+
+cached_domain = None
+
+
+# Based on http://code.activestate.com/recipes/576694/.
+class OrderedSet(collections.MutableSet):
+  def __init__(self, iterable=None):
+    self.end = end = []
+    end += [None, end, end]         # sentinel node for doubly linked list
+    self.map = {}                   # key --> [key, prev, next]
+    if iterable is not None:
+      self |= iterable
+
+  def __len__(self):
+    return len(self.map)
+
+  def discard(self, key):
+    if key in self.map:
+      key, prev, next = self.map.pop(key)
+      prev[2] = next
+      next[1] = prev
+
+  def __contains__(self, key):
+    return key in self.map
+
+  def add(self, key):
+    if key not in self.map:
+      end = self.end
+      curr = end[1]
+      curr[2] = end[1] = self.map[key] = [key, curr, end]
+
+  def update(self, iterable):
+    for i in iterable:
+      if i not in self:
+        self.add(i)
+
+  def __iter__(self):
+    end = self.end
+    curr = end[2]
+    while curr is not end:
+      yield curr[0]
+      curr = curr[2]
+
+
+# TODO(gspencer): Switch the os.environ calls to be
+# win32api.GetDomainName() and win32api.GetUserName() once the
+# python version in depot_tools has been updated to work on Vista
+# 64-bit.
+def _GetDomainAndUserName():
+  if sys.platform not in ('win32', 'cygwin'):
+    return ('DOMAIN', 'USERNAME')
+  global cached_username
+  global cached_domain
+  if not cached_domain or not cached_username:
+    domain = os.environ.get('USERDOMAIN')
+    username = os.environ.get('USERNAME')
+    if not domain or not username:
+      call = subprocess.Popen(['net', 'config', 'Workstation'],
+                              stdout=subprocess.PIPE)
+      config = call.communicate()[0]
+      username_re = re.compile('^User name\s+(\S+)', re.MULTILINE)
+      username_match = username_re.search(config)
+      if username_match:
+        username = username_match.group(1)
+      domain_re = re.compile('^Logon domain\s+(\S+)', re.MULTILINE)
+      domain_match = domain_re.search(config)
+      if domain_match:
+        domain = domain_match.group(1)
+    cached_domain = domain
+    cached_username = username
+  return (cached_domain, cached_username)
+
+fixpath_prefix = None
+
+
+def _NormalizedSource(source):
+  """Normalize the path.
+
+  But not if that gets rid of a variable, as this may expand to something
+  larger than one directory.
+
+  Arguments:
+      source: The path to be normalize.d
+
+  Returns:
+      The normalized path.
+  """
+  normalized = os.path.normpath(source)
+  if source.count('$') == normalized.count('$'):
+    source = normalized
+  return source
+
+
+def _FixPath(path):
+  """Convert paths to a form that will make sense in a vcproj file.
+
+  Arguments:
+    path: The path to convert, may contain / etc.
+  Returns:
+    The path with all slashes made into backslashes.
+  """
+  if fixpath_prefix and path and not os.path.isabs(path) and not path[0] == '$':
+    path = os.path.join(fixpath_prefix, path)
+  path = path.replace('/', '\\')
+  path = _NormalizedSource(path)
+  if path and path[-1] == '\\':
+    path = path[:-1]
+  return path
+
+
+def _FixPaths(paths):
+  """Fix each of the paths of the list."""
+  return [_FixPath(i) for i in paths]
+
+
+def _ConvertSourcesToFilterHierarchy(sources, prefix=None, excluded=None,
+                                     list_excluded=True, msvs_version=None):
+  """Converts a list split source file paths into a vcproj folder hierarchy.
+
+  Arguments:
+    sources: A list of source file paths split.
+    prefix: A list of source file path layers meant to apply to each of sources.
+    excluded: A set of excluded files.
+    msvs_version: A MSVSVersion object.
+
+  Returns:
+    A hierarchy of filenames and MSVSProject.Filter objects that matches the
+    layout of the source tree.
+    For example:
+    _ConvertSourcesToFilterHierarchy([['a', 'bob1.c'], ['b', 'bob2.c']],
+                                     prefix=['joe'])
+    -->
+    [MSVSProject.Filter('a', contents=['joe\\a\\bob1.c']),
+     MSVSProject.Filter('b', contents=['joe\\b\\bob2.c'])]
+  """
+  if not prefix: prefix = []
+  result = []
+  excluded_result = []
+  folders = OrderedDict()
+  # Gather files into the final result, excluded, or folders.
+  for s in sources:
+    if len(s) == 1:
+      filename = _NormalizedSource('\\'.join(prefix + s))
+      if filename in excluded:
+        excluded_result.append(filename)
+      else:
+        result.append(filename)
+    elif msvs_version and not msvs_version.UsesVcxproj():
+      # For MSVS 2008 and earlier, we need to process all files before walking
+      # the sub folders.
+      if not folders.get(s[0]):
+        folders[s[0]] = []
+      folders[s[0]].append(s[1:])
+    else:
+      contents = _ConvertSourcesToFilterHierarchy([s[1:]], prefix + [s[0]],
+                                                  excluded=excluded,
+                                                  list_excluded=list_excluded,
+                                                  msvs_version=msvs_version)
+      contents = MSVSProject.Filter(s[0], contents=contents)
+      result.append(contents)
+  # Add a folder for excluded files.
+  if excluded_result and list_excluded:
+    excluded_folder = MSVSProject.Filter('_excluded_files',
+                                         contents=excluded_result)
+    result.append(excluded_folder)
+
+  if msvs_version and msvs_version.UsesVcxproj():
+    return result
+
+  # Populate all the folders.
+  for f in folders:
+    contents = _ConvertSourcesToFilterHierarchy(folders[f], prefix=prefix + [f],
+                                                excluded=excluded,
+                                                list_excluded=list_excluded,
+                                                msvs_version=msvs_version)
+    contents = MSVSProject.Filter(f, contents=contents)
+    result.append(contents)
+  return result
+
+
+def _ToolAppend(tools, tool_name, setting, value, only_if_unset=False):
+  if not value: return
+  _ToolSetOrAppend(tools, tool_name, setting, value, only_if_unset)
+
+
+def _ToolSetOrAppend(tools, tool_name, setting, value, only_if_unset=False):
+  # TODO(bradnelson): ugly hack, fix this more generally!!!
+  if 'Directories' in setting or 'Dependencies' in setting:
+    if type(value) == str:
+      value = value.replace('/', '\\')
+    else:
+      value = [i.replace('/', '\\') for i in value]
+  if not tools.get(tool_name):
+    tools[tool_name] = dict()
+  tool = tools[tool_name]
+  if tool.get(setting):
+    if only_if_unset: return
+    if type(tool[setting]) == list and type(value) == list:
+      tool[setting] += value
+    else:
+      raise TypeError(
+          'Appending "%s" to a non-list setting "%s" for tool "%s" is '
+          'not allowed, previous value: %s' % (
+              value, setting, tool_name, str(tool[setting])))
+  else:
+    tool[setting] = value
+
+
+def _ConfigPlatform(config_data):
+  return config_data.get('msvs_configuration_platform', 'Win32')
+
+
+def _ConfigBaseName(config_name, platform_name):
+  if config_name.endswith('_' + platform_name):
+    return config_name[0:-len(platform_name) - 1]
+  else:
+    return config_name
+
+
+def _ConfigFullName(config_name, config_data):
+  platform_name = _ConfigPlatform(config_data)
+  return '%s|%s' % (_ConfigBaseName(config_name, platform_name), platform_name)
+
+
+def _BuildCommandLineForRuleRaw(spec, cmd, cygwin_shell, has_input_path,
+                                quote_cmd, do_setup_env):
+
+  if [x for x in cmd if '$(InputDir)' in x]:
+    input_dir_preamble = (
+      'set INPUTDIR=$(InputDir)\n'
+      'set INPUTDIR=%INPUTDIR:$(ProjectDir)=%\n'
+      'set INPUTDIR=%INPUTDIR:~0,-1%\n'
+      )
+  else:
+    input_dir_preamble = ''
+
+  if cygwin_shell:
+    # Find path to cygwin.
+    cygwin_dir = _FixPath(spec.get('msvs_cygwin_dirs', ['.'])[0])
+    # Prepare command.
+    direct_cmd = cmd
+    direct_cmd = [i.replace('$(IntDir)',
+                            '`cygpath -m "${INTDIR}"`') for i in direct_cmd]
+    direct_cmd = [i.replace('$(OutDir)',
+                            '`cygpath -m "${OUTDIR}"`') for i in direct_cmd]
+    direct_cmd = [i.replace('$(InputDir)',
+                            '`cygpath -m "${INPUTDIR}"`') for i in direct_cmd]
+    if has_input_path:
+      direct_cmd = [i.replace('$(InputPath)',
+                              '`cygpath -m "${INPUTPATH}"`')
+                    for i in direct_cmd]
+    direct_cmd = ['\\"%s\\"' % i.replace('"', '\\\\\\"') for i in direct_cmd]
+    # direct_cmd = gyp.common.EncodePOSIXShellList(direct_cmd)
+    direct_cmd = ' '.join(direct_cmd)
+    # TODO(quote):  regularize quoting path names throughout the module
+    cmd = ''
+    if do_setup_env:
+      cmd += 'call "$(ProjectDir)%(cygwin_dir)s\\setup_env.bat" && '
+    cmd += 'set CYGWIN=nontsec&& '
+    if direct_cmd.find('NUMBER_OF_PROCESSORS') >= 0:
+      cmd += 'set /a NUMBER_OF_PROCESSORS_PLUS_1=%%NUMBER_OF_PROCESSORS%%+1&& '
+    if direct_cmd.find('INTDIR') >= 0:
+      cmd += 'set INTDIR=$(IntDir)&& '
+    if direct_cmd.find('OUTDIR') >= 0:
+      cmd += 'set OUTDIR=$(OutDir)&& '
+    if has_input_path and direct_cmd.find('INPUTPATH') >= 0:
+      cmd += 'set INPUTPATH=$(InputPath) && '
+    cmd += 'bash -c "%(cmd)s"'
+    cmd = cmd % {'cygwin_dir': cygwin_dir,
+                 'cmd': direct_cmd}
+    return input_dir_preamble + cmd
+  else:
+    # Convert cat --> type to mimic unix.
+    if cmd[0] == 'cat':
+      command = ['type']
+    else:
+      command = [cmd[0].replace('/', '\\')]
+    # Add call before command to ensure that commands can be tied together one
+    # after the other without aborting in Incredibuild, since IB makes a bat
+    # file out of the raw command string, and some commands (like python) are
+    # actually batch files themselves.
+    command.insert(0, 'call')
+    # Fix the paths
+    # TODO(quote): This is a really ugly heuristic, and will miss path fixing
+    #              for arguments like "--arg=path" or "/opt:path".
+    # If the argument starts with a slash or dash, it's probably a command line
+    # switch
+    arguments = [i if (i[:1] in "/-") else _FixPath(i) for i in cmd[1:]]
+    arguments = [i.replace('$(InputDir)', '%INPUTDIR%') for i in arguments]
+    arguments = [MSVSSettings.FixVCMacroSlashes(i) for i in arguments]
+    if quote_cmd:
+      # Support a mode for using cmd directly.
+      # Convert any paths to native form (first element is used directly).
+      # TODO(quote):  regularize quoting path names throughout the module
+      arguments = ['"%s"' % i for i in arguments]
+    # Collapse into a single command.
+    return input_dir_preamble + ' '.join(command + arguments)
+
+
+def _BuildCommandLineForRule(spec, rule, has_input_path, do_setup_env):
+  # Currently this weird argument munging is used to duplicate the way a
+  # python script would need to be run as part of the chrome tree.
+  # Eventually we should add some sort of rule_default option to set this
+  # per project. For now the behavior chrome needs is the default.
+  mcs = rule.get('msvs_cygwin_shell')
+  if mcs is None:
+    mcs = int(spec.get('msvs_cygwin_shell', 1))
+  elif isinstance(mcs, str):
+    mcs = int(mcs)
+  quote_cmd = int(rule.get('msvs_quote_cmd', 1))
+  return _BuildCommandLineForRuleRaw(spec, rule['action'], mcs, has_input_path,
+                                     quote_cmd, do_setup_env=do_setup_env)
+
+
+def _AddActionStep(actions_dict, inputs, outputs, description, command):
+  """Merge action into an existing list of actions.
+
+  Care must be taken so that actions which have overlapping inputs either don't
+  get assigned to the same input, or get collapsed into one.
+
+  Arguments:
+    actions_dict: dictionary keyed on input name, which maps to a list of
+      dicts describing the actions attached to that input file.
+    inputs: list of inputs
+    outputs: list of outputs
+    description: description of the action
+    command: command line to execute
+  """
+  # Require there to be at least one input (call sites will ensure this).
+  assert inputs
+
+  action = {
+      'inputs': inputs,
+      'outputs': outputs,
+      'description': description,
+      'command': command,
+  }
+
+  # Pick where to stick this action.
+  # While less than optimal in terms of build time, attach them to the first
+  # input for now.
+  chosen_input = inputs[0]
+
+  # Add it there.
+  if chosen_input not in actions_dict:
+    actions_dict[chosen_input] = []
+  actions_dict[chosen_input].append(action)
+
+
+def _AddCustomBuildToolForMSVS(p, spec, primary_input,
+                               inputs, outputs, description, cmd):
+  """Add a custom build tool to execute something.
+
+  Arguments:
+    p: the target project
+    spec: the target project dict
+    primary_input: input file to attach the build tool to
+    inputs: list of inputs
+    outputs: list of outputs
+    description: description of the action
+    cmd: command line to execute
+  """
+  inputs = _FixPaths(inputs)
+  outputs = _FixPaths(outputs)
+  tool = MSVSProject.Tool(
+      'VCCustomBuildTool',
+      {'Description': description,
+       'AdditionalDependencies': ';'.join(inputs),
+       'Outputs': ';'.join(outputs),
+       'CommandLine': cmd,
+      })
+  # Add to the properties of primary input for each config.
+  for config_name, c_data in spec['configurations'].iteritems():
+    p.AddFileConfig(_FixPath(primary_input),
+                    _ConfigFullName(config_name, c_data), tools=[tool])
+
+
+def _AddAccumulatedActionsToMSVS(p, spec, actions_dict):
+  """Add actions accumulated into an actions_dict, merging as needed.
+
+  Arguments:
+    p: the target project
+    spec: the target project dict
+    actions_dict: dictionary keyed on input name, which maps to a list of
+        dicts describing the actions attached to that input file.
+  """
+  for primary_input in actions_dict:
+    inputs = OrderedSet()
+    outputs = OrderedSet()
+    descriptions = []
+    commands = []
+    for action in actions_dict[primary_input]:
+      inputs.update(OrderedSet(action['inputs']))
+      outputs.update(OrderedSet(action['outputs']))
+      descriptions.append(action['description'])
+      commands.append(action['command'])
+    # Add the custom build step for one input file.
+    description = ', and also '.join(descriptions)
+    command = '\r\n'.join(commands)
+    _AddCustomBuildToolForMSVS(p, spec,
+                               primary_input=primary_input,
+                               inputs=inputs,
+                               outputs=outputs,
+                               description=description,
+                               cmd=command)
+
+
+def _RuleExpandPath(path, input_file):
+  """Given the input file to which a rule applied, string substitute a path.
+
+  Arguments:
+    path: a path to string expand
+    input_file: the file to which the rule applied.
+  Returns:
+    The string substituted path.
+  """
+  path = path.replace('$(InputName)',
+                      os.path.splitext(os.path.split(input_file)[1])[0])
+  path = path.replace('$(InputDir)', os.path.dirname(input_file))
+  path = path.replace('$(InputExt)',
+                      os.path.splitext(os.path.split(input_file)[1])[1])
+  path = path.replace('$(InputFileName)', os.path.split(input_file)[1])
+  path = path.replace('$(InputPath)', input_file)
+  return path
+
+
+def _FindRuleTriggerFiles(rule, sources):
+  """Find the list of files which a particular rule applies to.
+
+  Arguments:
+    rule: the rule in question
+    sources: the set of all known source files for this project
+  Returns:
+    The list of sources that trigger a particular rule.
+  """
+  return rule.get('rule_sources', [])
+
+
+def _RuleInputsAndOutputs(rule, trigger_file):
+  """Find the inputs and outputs generated by a rule.
+
+  Arguments:
+    rule: the rule in question.
+    trigger_file: the main trigger for this rule.
+  Returns:
+    The pair of (inputs, outputs) involved in this rule.
+  """
+  raw_inputs = _FixPaths(rule.get('inputs', []))
+  raw_outputs = _FixPaths(rule.get('outputs', []))
+  inputs = OrderedSet()
+  outputs = OrderedSet()
+  inputs.add(trigger_file)
+  for i in raw_inputs:
+    inputs.add(_RuleExpandPath(i, trigger_file))
+  for o in raw_outputs:
+    outputs.add(_RuleExpandPath(o, trigger_file))
+  return (inputs, outputs)
+
+
+def _GenerateNativeRulesForMSVS(p, rules, output_dir, spec, options):
+  """Generate a native rules file.
+
+  Arguments:
+    p: the target project
+    rules: the set of rules to include
+    output_dir: the directory in which the project/gyp resides
+    spec: the project dict
+    options: global generator options
+  """
+  rules_filename = '%s%s.rules' % (spec['target_name'],
+                                   options.suffix)
+  rules_file = MSVSToolFile.Writer(os.path.join(output_dir, rules_filename),
+                                   spec['target_name'])
+  # Add each rule.
+  for r in rules:
+    rule_name = r['rule_name']
+    rule_ext = r['extension']
+    inputs = _FixPaths(r.get('inputs', []))
+    outputs = _FixPaths(r.get('outputs', []))
+    # Skip a rule with no action and no inputs.
+    if 'action' not in r and not r.get('rule_sources', []):
+      continue
+    cmd = _BuildCommandLineForRule(spec, r, has_input_path=True,
+                                   do_setup_env=True)
+    rules_file.AddCustomBuildRule(name=rule_name,
+                                  description=r.get('message', rule_name),
+                                  extensions=[rule_ext],
+                                  additional_dependencies=inputs,
+                                  outputs=outputs,
+                                  cmd=cmd)
+  # Write out rules file.
+  rules_file.WriteIfChanged()
+
+  # Add rules file to project.
+  p.AddToolFile(rules_filename)
+
+
+def _Cygwinify(path):
+  path = path.replace('$(OutDir)', '$(OutDirCygwin)')
+  path = path.replace('$(IntDir)', '$(IntDirCygwin)')
+  return path
+
+
+def _GenerateExternalRules(rules, output_dir, spec,
+                           sources, options, actions_to_add):
+  """Generate an external makefile to do a set of rules.
+
+  Arguments:
+    rules: the list of rules to include
+    output_dir: path containing project and gyp files
+    spec: project specification data
+    sources: set of sources known
+    options: global generator options
+    actions_to_add: The list of actions we will add to.
+  """
+  filename = '%s_rules%s.mk' % (spec['target_name'], options.suffix)
+  mk_file = gyp.common.WriteOnDiff(os.path.join(output_dir, filename))
+  # Find cygwin style versions of some paths.
+  mk_file.write('OutDirCygwin:=$(shell cygpath -u "$(OutDir)")\n')
+  mk_file.write('IntDirCygwin:=$(shell cygpath -u "$(IntDir)")\n')
+  # Gather stuff needed to emit all: target.
+  all_inputs = OrderedSet()
+  all_outputs = OrderedSet()
+  all_output_dirs = OrderedSet()
+  first_outputs = []
+  for rule in rules:
+    trigger_files = _FindRuleTriggerFiles(rule, sources)
+    for tf in trigger_files:
+      inputs, outputs = _RuleInputsAndOutputs(rule, tf)
+      all_inputs.update(OrderedSet(inputs))
+      all_outputs.update(OrderedSet(outputs))
+      # Only use one target from each rule as the dependency for
+      # 'all' so we don't try to build each rule multiple times.
+      first_outputs.append(list(outputs)[0])
+      # Get the unique output directories for this rule.
+      output_dirs = [os.path.split(i)[0] for i in outputs]
+      for od in output_dirs:
+        all_output_dirs.add(od)
+  first_outputs_cyg = [_Cygwinify(i) for i in first_outputs]
+  # Write out all: target, including mkdir for each output directory.
+  mk_file.write('all: %s\n' % ' '.join(first_outputs_cyg))
+  for od in all_output_dirs:
+    if od:
+      mk_file.write('\tmkdir -p `cygpath -u "%s"`\n' % od)
+  mk_file.write('\n')
+  # Define how each output is generated.
+  for rule in rules:
+    trigger_files = _FindRuleTriggerFiles(rule, sources)
+    for tf in trigger_files:
+      # Get all the inputs and outputs for this rule for this trigger file.
+      inputs, outputs = _RuleInputsAndOutputs(rule, tf)
+      inputs = [_Cygwinify(i) for i in inputs]
+      outputs = [_Cygwinify(i) for i in outputs]
+      # Prepare the command line for this rule.
+      cmd = [_RuleExpandPath(c, tf) for c in rule['action']]
+      cmd = ['"%s"' % i for i in cmd]
+      cmd = ' '.join(cmd)
+      # Add it to the makefile.
+      mk_file.write('%s: %s\n' % (' '.join(outputs), ' '.join(inputs)))
+      mk_file.write('\t%s\n\n' % cmd)
+  # Close up the file.
+  mk_file.close()
+
+  # Add makefile to list of sources.
+  sources.add(filename)
+  # Add a build action to call makefile.
+  cmd = ['make',
+         'OutDir=$(OutDir)',
+         'IntDir=$(IntDir)',
+         '-j', '${NUMBER_OF_PROCESSORS_PLUS_1}',
+         '-f', filename]
+  cmd = _BuildCommandLineForRuleRaw(spec, cmd, True, False, True, True)
+  # Insert makefile as 0'th input, so it gets the action attached there,
+  # as this is easier to understand from in the IDE.
+  all_inputs = list(all_inputs)
+  all_inputs.insert(0, filename)
+  _AddActionStep(actions_to_add,
+                 inputs=_FixPaths(all_inputs),
+                 outputs=_FixPaths(all_outputs),
+                 description='Running external rules for %s' %
+                     spec['target_name'],
+                 command=cmd)
+
+
+def _EscapeEnvironmentVariableExpansion(s):
+  """Escapes % characters.
+
+  Escapes any % characters so that Windows-style environment variable
+  expansions will leave them alone.
+  See http://connect.microsoft.com/VisualStudio/feedback/details/106127/cl-d-name-text-containing-percentage-characters-doesnt-compile
+  to understand why we have to do this.
+
+  Args:
+      s: The string to be escaped.
+
+  Returns:
+      The escaped string.
+  """
+  s = s.replace('%', '%%')
+  return s
+
+
+quote_replacer_regex = re.compile(r'(\\*)"')
+
+
+def _EscapeCommandLineArgumentForMSVS(s):
+  """Escapes a Windows command-line argument.
+
+  So that the Win32 CommandLineToArgv function will turn the escaped result back
+  into the original string.
+  See http://msdn.microsoft.com/en-us/library/17w5ykft.aspx
+  ("Parsing C++ Command-Line Arguments") to understand why we have to do
+  this.
+
+  Args:
+      s: the string to be escaped.
+  Returns:
+      the escaped string.
+  """
+
+  def _Replace(match):
+    # For a literal quote, CommandLineToArgv requires an odd number of
+    # backslashes preceding it, and it produces half as many literal backslashes
+    # (rounded down). So we need to produce 2n+1 backslashes.
+    return 2 * match.group(1) + '\\"'
+
+  # Escape all quotes so that they are interpreted literally.
+  s = quote_replacer_regex.sub(_Replace, s)
+  # Now add unescaped quotes so that any whitespace is interpreted literally.
+  s = '"' + s + '"'
+  return s
+
+
+delimiters_replacer_regex = re.compile(r'(\\*)([,;]+)')
+
+
+def _EscapeVCProjCommandLineArgListItem(s):
+  """Escapes command line arguments for MSVS.
+
+  The VCProj format stores string lists in a single string using commas and
+  semi-colons as separators, which must be quoted if they are to be
+  interpreted literally. However, command-line arguments may already have
+  quotes, and the VCProj parser is ignorant of the backslash escaping
+  convention used by CommandLineToArgv, so the command-line quotes and the
+  VCProj quotes may not be the same quotes. So to store a general
+  command-line argument in a VCProj list, we need to parse the existing
+  quoting according to VCProj's convention and quote any delimiters that are
+  not already quoted by that convention. The quotes that we add will also be
+  seen by CommandLineToArgv, so if backslashes precede them then we also have
+  to escape those backslashes according to the CommandLineToArgv
+  convention.
+
+  Args:
+      s: the string to be escaped.
+  Returns:
+      the escaped string.
+  """
+
+  def _Replace(match):
+    # For a non-literal quote, CommandLineToArgv requires an even number of
+    # backslashes preceding it, and it produces half as many literal
+    # backslashes. So we need to produce 2n backslashes.
+    return 2 * match.group(1) + '"' + match.group(2) + '"'
+
+  segments = s.split('"')
+  # The unquoted segments are at the even-numbered indices.
+  for i in range(0, len(segments), 2):
+    segments[i] = delimiters_replacer_regex.sub(_Replace, segments[i])
+  # Concatenate back into a single string
+  s = '"'.join(segments)
+  if len(segments) % 2 == 0:
+    # String ends while still quoted according to VCProj's convention. This
+    # means the delimiter and the next list item that follow this one in the
+    # .vcproj file will be misinterpreted as part of this item. There is nothing
+    # we can do about this. Adding an extra quote would correct the problem in
+    # the VCProj but cause the same problem on the final command-line. Moving
+    # the item to the end of the list does works, but that's only possible if
+    # there's only one such item. Let's just warn the user.
+    print >> sys.stderr, ('Warning: MSVS may misinterpret the odd number of ' +
+                          'quotes in ' + s)
+  return s
+
+
+def _EscapeCppDefineForMSVS(s):
+  """Escapes a CPP define so that it will reach the compiler unaltered."""
+  s = _EscapeEnvironmentVariableExpansion(s)
+  s = _EscapeCommandLineArgumentForMSVS(s)
+  s = _EscapeVCProjCommandLineArgListItem(s)
+  # cl.exe replaces literal # characters with = in preprocesor definitions for
+  # some reason. Octal-encode to work around that.
+  s = s.replace('#', '\\%03o' % ord('#'))
+  return s
+
+
+quote_replacer_regex2 = re.compile(r'(\\+)"')
+
+
+def _EscapeCommandLineArgumentForMSBuild(s):
+  """Escapes a Windows command-line argument for use by MSBuild."""
+
+  def _Replace(match):
+    return (len(match.group(1)) / 2 * 4) * '\\' + '\\"'
+
+  # Escape all quotes so that they are interpreted literally.
+  s = quote_replacer_regex2.sub(_Replace, s)
+  return s
+
+
+def _EscapeMSBuildSpecialCharacters(s):
+  escape_dictionary = {
+      '%': '%25',
+      '$': '%24',
+      '@': '%40',
+      "'": '%27',
+      ';': '%3B',
+      '?': '%3F',
+      '*': '%2A'
+      }
+  result = ''.join([escape_dictionary.get(c, c) for c in s])
+  return result
+
+
+def _EscapeCppDefineForMSBuild(s):
+  """Escapes a CPP define so that it will reach the compiler unaltered."""
+  s = _EscapeEnvironmentVariableExpansion(s)
+  s = _EscapeCommandLineArgumentForMSBuild(s)
+  s = _EscapeMSBuildSpecialCharacters(s)
+  # cl.exe replaces literal # characters with = in preprocesor definitions for
+  # some reason. Octal-encode to work around that.
+  s = s.replace('#', '\\%03o' % ord('#'))
+  return s
+
+
+def _GenerateRulesForMSVS(p, output_dir, options, spec,
+                          sources, excluded_sources,
+                          actions_to_add):
+  """Generate all the rules for a particular project.
+
+  Arguments:
+    p: the project
+    output_dir: directory to emit rules to
+    options: global options passed to the generator
+    spec: the specification for this project
+    sources: the set of all known source files in this project
+    excluded_sources: the set of sources excluded from normal processing
+    actions_to_add: deferred list of actions to add in
+  """
+  rules = spec.get('rules', [])
+  rules_native = [r for r in rules if not int(r.get('msvs_external_rule', 0))]
+  rules_external = [r for r in rules if int(r.get('msvs_external_rule', 0))]
+
+  # Handle rules that use a native rules file.
+  if rules_native:
+    _GenerateNativeRulesForMSVS(p, rules_native, output_dir, spec, options)
+
+  # Handle external rules (non-native rules).
+  if rules_external:
+    _GenerateExternalRules(rules_external, output_dir, spec,
+                           sources, options, actions_to_add)
+  _AdjustSourcesForRules(spec, rules, sources, excluded_sources)
+
+
+def _AdjustSourcesForRules(spec, rules, sources, excluded_sources):
+  # Add outputs generated by each rule (if applicable).
+  for rule in rules:
+    # Done if not processing outputs as sources.
+    if int(rule.get('process_outputs_as_sources', False)):
+      # Add in the outputs from this rule.
+      trigger_files = _FindRuleTriggerFiles(rule, sources)
+      for trigger_file in trigger_files:
+        inputs, outputs = _RuleInputsAndOutputs(rule, trigger_file)
+        inputs = OrderedSet(_FixPaths(inputs))
+        outputs = OrderedSet(_FixPaths(outputs))
+        inputs.remove(_FixPath(trigger_file))
+        sources.update(inputs)
+        if not spec.get('msvs_external_builder'):
+          excluded_sources.update(inputs)
+        sources.update(outputs)
+
+
+def _FilterActionsFromExcluded(excluded_sources, actions_to_add):
+  """Take inputs with actions attached out of the list of exclusions.
+
+  Arguments:
+    excluded_sources: list of source files not to be built.
+    actions_to_add: dict of actions keyed on source file they're attached to.
+  Returns:
+    excluded_sources with files that have actions attached removed.
+  """
+  must_keep = OrderedSet(_FixPaths(actions_to_add.keys()))
+  return [s for s in excluded_sources if s not in must_keep]
+
+
+def _GetDefaultConfiguration(spec):
+  return spec['configurations'][spec['default_configuration']]
+
+
+def _GetGuidOfProject(proj_path, spec):
+  """Get the guid for the project.
+
+  Arguments:
+    proj_path: Path of the vcproj or vcxproj file to generate.
+    spec: The target dictionary containing the properties of the target.
+  Returns:
+    the guid.
+  Raises:
+    ValueError: if the specified GUID is invalid.
+  """
+  # Pluck out the default configuration.
+  default_config = _GetDefaultConfiguration(spec)
+  # Decide the guid of the project.
+  guid = default_config.get('msvs_guid')
+  if guid:
+    if VALID_MSVS_GUID_CHARS.match(guid) is None:
+      raise ValueError('Invalid MSVS guid: "%s".  Must match regex: "%s".' %
+                       (guid, VALID_MSVS_GUID_CHARS.pattern))
+    guid = '{%s}' % guid
+  guid = guid or MSVSNew.MakeGuid(proj_path)
+  return guid
+
+
+def _GetMsbuildToolsetOfProject(proj_path, spec, version):
+  """Get the platform toolset for the project.
+
+  Arguments:
+    proj_path: Path of the vcproj or vcxproj file to generate.
+    spec: The target dictionary containing the properties of the target.
+    version: The MSVSVersion object.
+  Returns:
+    the platform toolset string or None.
+  """
+  # Pluck out the default configuration.
+  default_config = _GetDefaultConfiguration(spec)
+  toolset = default_config.get('msbuild_toolset')
+  if not toolset and version.DefaultToolset():
+    toolset = version.DefaultToolset()
+  return toolset
+
+
+def _GenerateProject(project, options, version, generator_flags):
+  """Generates a vcproj file.
+
+  Arguments:
+    project: the MSVSProject object.
+    options: global generator options.
+    version: the MSVSVersion object.
+    generator_flags: dict of generator-specific flags.
+  Returns:
+    A list of source files that cannot be found on disk.
+  """
+  default_config = _GetDefaultConfiguration(project.spec)
+
+  # Skip emitting anything if told to with msvs_existing_vcproj option.
+  if default_config.get('msvs_existing_vcproj'):
+    return []
+
+  if version.UsesVcxproj():
+    return _GenerateMSBuildProject(project, options, version, generator_flags)
+  else:
+    return _GenerateMSVSProject(project, options, version, generator_flags)
+
+
+def _GenerateMSVSProject(project, options, version, generator_flags):
+  """Generates a .vcproj file.  It may create .rules and .user files too.
+
+  Arguments:
+    project: The project object we will generate the file for.
+    options: Global options passed to the generator.
+    version: The VisualStudioVersion object.
+    generator_flags: dict of generator-specific flags.
+  """
+  spec = project.spec
+  gyp.common.EnsureDirExists(project.path)
+
+  platforms = _GetUniquePlatforms(spec)
+  p = MSVSProject.Writer(project.path, version, spec['target_name'],
+                         project.guid, platforms)
+
+  # Get directory project file is in.
+  project_dir = os.path.split(project.path)[0]
+  gyp_path = _NormalizedSource(project.build_file)
+  relative_path_of_gyp_file = gyp.common.RelativePath(gyp_path, project_dir)
+
+  config_type = _GetMSVSConfigurationType(spec, project.build_file)
+  for config_name, config in spec['configurations'].iteritems():
+    _AddConfigurationToMSVSProject(p, spec, config_type, config_name, config)
+
+  # Prepare list of sources and excluded sources.
+  gyp_file = os.path.split(project.build_file)[1]
+  sources, excluded_sources = _PrepareListOfSources(spec, generator_flags,
+                                                    gyp_file)
+
+  # Add rules.
+  actions_to_add = {}
+  _GenerateRulesForMSVS(p, project_dir, options, spec,
+                        sources, excluded_sources,
+                        actions_to_add)
+  list_excluded = generator_flags.get('msvs_list_excluded_files', True)
+  sources, excluded_sources, excluded_idl = (
+      _AdjustSourcesAndConvertToFilterHierarchy(spec, options, project_dir,
+                                                sources, excluded_sources,
+                                                list_excluded, version))
+
+  # Add in files.
+  missing_sources = _VerifySourcesExist(sources, project_dir)
+  p.AddFiles(sources)
+
+  _AddToolFilesToMSVS(p, spec)
+  _HandlePreCompiledHeaders(p, sources, spec)
+  _AddActions(actions_to_add, spec, relative_path_of_gyp_file)
+  _AddCopies(actions_to_add, spec)
+  _WriteMSVSUserFile(project.path, version, spec)
+
+  # NOTE: this stanza must appear after all actions have been decided.
+  # Don't excluded sources with actions attached, or they won't run.
+  excluded_sources = _FilterActionsFromExcluded(
+      excluded_sources, actions_to_add)
+  _ExcludeFilesFromBeingBuilt(p, spec, excluded_sources, excluded_idl,
+                              list_excluded)
+  _AddAccumulatedActionsToMSVS(p, spec, actions_to_add)
+
+  # Write it out.
+  p.WriteIfChanged()
+
+  return missing_sources
+
+
+def _GetUniquePlatforms(spec):
+  """Returns the list of unique platforms for this spec, e.g ['win32', ...].
+
+  Arguments:
+    spec: The target dictionary containing the properties of the target.
+  Returns:
+    The MSVSUserFile object created.
+  """
+  # Gather list of unique platforms.
+  platforms = OrderedSet()
+  for configuration in spec['configurations']:
+    platforms.add(_ConfigPlatform(spec['configurations'][configuration]))
+  platforms = list(platforms)
+  return platforms
+
+
+def _CreateMSVSUserFile(proj_path, version, spec):
+  """Generates a .user file for the user running this Gyp program.
+
+  Arguments:
+    proj_path: The path of the project file being created.  The .user file
+               shares the same path (with an appropriate suffix).
+    version: The VisualStudioVersion object.
+    spec: The target dictionary containing the properties of the target.
+  Returns:
+    The MSVSUserFile object created.
+  """
+  (domain, username) = _GetDomainAndUserName()
+  vcuser_filename = '.'.join([proj_path, domain, username, 'user'])
+  user_file = MSVSUserFile.Writer(vcuser_filename, version,
+                                  spec['target_name'])
+  return user_file
+
+
+def _GetMSVSConfigurationType(spec, build_file):
+  """Returns the configuration type for this project.
+
+  It's a number defined by Microsoft.  May raise an exception.
+
+  Args:
+      spec: The target dictionary containing the properties of the target.
+      build_file: The path of the gyp file.
+  Returns:
+      An integer, the configuration type.
+  """
+  try:
+    config_type = {
+        'executable': '1',  # .exe
+        'shared_library': '2',  # .dll
+        'loadable_module': '2',  # .dll
+        'static_library': '4',  # .lib
+        'none': '10',  # Utility type
+        }[spec['type']]
+  except KeyError:
+    if spec.get('type'):
+      raise GypError('Target type %s is not a valid target type for '
+                     'target %s in %s.' %
+                     (spec['type'], spec['target_name'], build_file))
+    else:
+      raise GypError('Missing type field for target %s in %s.' %
+                     (spec['target_name'], build_file))
+  return config_type
+
+
+def _AddConfigurationToMSVSProject(p, spec, config_type, config_name, config):
+  """Adds a configuration to the MSVS project.
+
+  Many settings in a vcproj file are specific to a configuration.  This
+  function the main part of the vcproj file that's configuration specific.
+
+  Arguments:
+    p: The target project being generated.
+    spec: The target dictionary containing the properties of the target.
+    config_type: The configuration type, a number as defined by Microsoft.
+    config_name: The name of the configuration.
+    config: The dictionary that defines the special processing to be done
+            for this configuration.
+  """
+  # Get the information for this configuration
+  include_dirs, resource_include_dirs = _GetIncludeDirs(config)
+  libraries = _GetLibraries(spec)
+  library_dirs = _GetLibraryDirs(config)
+  out_file, vc_tool, _ = _GetOutputFilePathAndTool(spec, msbuild=False)
+  defines = _GetDefines(config)
+  defines = [_EscapeCppDefineForMSVS(d) for d in defines]
+  disabled_warnings = _GetDisabledWarnings(config)
+  prebuild = config.get('msvs_prebuild')
+  postbuild = config.get('msvs_postbuild')
+  def_file = _GetModuleDefinition(spec)
+  precompiled_header = config.get('msvs_precompiled_header')
+
+  # Prepare the list of tools as a dictionary.
+  tools = dict()
+  # Add in user specified msvs_settings.
+  msvs_settings = config.get('msvs_settings', {})
+  MSVSSettings.ValidateMSVSSettings(msvs_settings)
+
+  # Prevent default library inheritance from the environment.
+  _ToolAppend(tools, 'VCLinkerTool', 'AdditionalDependencies', ['$(NOINHERIT)'])
+
+  for tool in msvs_settings:
+    settings = config['msvs_settings'][tool]
+    for setting in settings:
+      _ToolAppend(tools, tool, setting, settings[setting])
+  # Add the information to the appropriate tool
+  _ToolAppend(tools, 'VCCLCompilerTool',
+              'AdditionalIncludeDirectories', include_dirs)
+  _ToolAppend(tools, 'VCResourceCompilerTool',
+              'AdditionalIncludeDirectories', resource_include_dirs)
+  # Add in libraries.
+  _ToolAppend(tools, 'VCLinkerTool', 'AdditionalDependencies', libraries)
+  _ToolAppend(tools, 'VCLinkerTool', 'AdditionalLibraryDirectories',
+              library_dirs)
+  if out_file:
+    _ToolAppend(tools, vc_tool, 'OutputFile', out_file, only_if_unset=True)
+  # Add defines.
+  _ToolAppend(tools, 'VCCLCompilerTool', 'PreprocessorDefinitions', defines)
+  _ToolAppend(tools, 'VCResourceCompilerTool', 'PreprocessorDefinitions',
+              defines)
+  # Change program database directory to prevent collisions.
+  _ToolAppend(tools, 'VCCLCompilerTool', 'ProgramDataBaseFileName',
+              '$(IntDir)$(ProjectName)\\vc80.pdb', only_if_unset=True)
+  # Add disabled warnings.
+  _ToolAppend(tools, 'VCCLCompilerTool',
+              'DisableSpecificWarnings', disabled_warnings)
+  # Add Pre-build.
+  _ToolAppend(tools, 'VCPreBuildEventTool', 'CommandLine', prebuild)
+  # Add Post-build.
+  _ToolAppend(tools, 'VCPostBuildEventTool', 'CommandLine', postbuild)
+  # Turn on precompiled headers if appropriate.
+  if precompiled_header:
+    precompiled_header = os.path.split(precompiled_header)[1]
+    _ToolAppend(tools, 'VCCLCompilerTool', 'UsePrecompiledHeader', '2')
+    _ToolAppend(tools, 'VCCLCompilerTool',
+                'PrecompiledHeaderThrough', precompiled_header)
+    _ToolAppend(tools, 'VCCLCompilerTool',
+                'ForcedIncludeFiles', precompiled_header)
+  # Loadable modules don't generate import libraries;
+  # tell dependent projects to not expect one.
+  if spec['type'] == 'loadable_module':
+    _ToolAppend(tools, 'VCLinkerTool', 'IgnoreImportLibrary', 'true')
+  # Set the module definition file if any.
+  if def_file:
+    _ToolAppend(tools, 'VCLinkerTool', 'ModuleDefinitionFile', def_file)
+
+  _AddConfigurationToMSVS(p, spec, tools, config, config_type, config_name)
+
+
+def _GetIncludeDirs(config):
+  """Returns the list of directories to be used for #include directives.
+
+  Arguments:
+    config: The dictionary that defines the special processing to be done
+            for this configuration.
+  Returns:
+    The list of directory paths.
+  """
+  # TODO(bradnelson): include_dirs should really be flexible enough not to
+  #                   require this sort of thing.
+  include_dirs = (
+      config.get('include_dirs', []) +
+      config.get('msvs_system_include_dirs', []))
+  resource_include_dirs = config.get('resource_include_dirs', include_dirs)
+  include_dirs = _FixPaths(include_dirs)
+  resource_include_dirs = _FixPaths(resource_include_dirs)
+  return include_dirs, resource_include_dirs
+
+
+def _GetLibraryDirs(config):
+  """Returns the list of directories to be used for library search paths.
+
+  Arguments:
+    config: The dictionary that defines the special processing to be done
+            for this configuration.
+  Returns:
+    The list of directory paths.
+  """
+
+  library_dirs = config.get('library_dirs', [])
+  library_dirs = _FixPaths(library_dirs)
+  return library_dirs
+
+
+def _GetLibraries(spec):
+  """Returns the list of libraries for this configuration.
+
+  Arguments:
+    spec: The target dictionary containing the properties of the target.
+  Returns:
+    The list of directory paths.
+  """
+  libraries = spec.get('libraries', [])
+  # Strip out -l, as it is not used on windows (but is needed so we can pass
+  # in libraries that are assumed to be in the default library path).
+  # Also remove duplicate entries, leaving only the last duplicate, while
+  # preserving order.
+  found = OrderedSet()
+  unique_libraries_list = []
+  for entry in reversed(libraries):
+    library = re.sub('^\-l', '', entry)
+    if not os.path.splitext(library)[1]:
+      library += '.lib'
+    if library not in found:
+      found.add(library)
+      unique_libraries_list.append(library)
+  unique_libraries_list.reverse()
+  return unique_libraries_list
+
+
+def _GetOutputFilePathAndTool(spec, msbuild):
+  """Returns the path and tool to use for this target.
+
+  Figures out the path of the file this spec will create and the name of
+  the VC tool that will create it.
+
+  Arguments:
+    spec: The target dictionary containing the properties of the target.
+  Returns:
+    A triple of (file path, name of the vc tool, name of the msbuild tool)
+  """
+  # Select a name for the output file.
+  out_file = ''
+  vc_tool = ''
+  msbuild_tool = ''
+  output_file_map = {
+      'executable': ('VCLinkerTool', 'Link', '$(OutDir)', '.exe'),
+      'shared_library': ('VCLinkerTool', 'Link', '$(OutDir)', '.dll'),
+      'loadable_module': ('VCLinkerTool', 'Link', '$(OutDir)', '.dll'),
+      'static_library': ('VCLibrarianTool', 'Lib', '$(OutDir)lib\\', '.lib'),
+  }
+  output_file_props = output_file_map.get(spec['type'])
+  if output_file_props and int(spec.get('msvs_auto_output_file', 1)):
+    vc_tool, msbuild_tool, out_dir, suffix = output_file_props
+    if spec.get('standalone_static_library', 0):
+      out_dir = '$(OutDir)'
+    out_dir = spec.get('product_dir', out_dir)
+    product_extension = spec.get('product_extension')
+    if product_extension:
+      suffix = '.' + product_extension
+    elif msbuild:
+      suffix = '$(TargetExt)'
+    prefix = spec.get('product_prefix', '')
+    product_name = spec.get('product_name', '$(ProjectName)')
+    out_file = ntpath.join(out_dir, prefix + product_name + suffix)
+  return out_file, vc_tool, msbuild_tool
+
+
+def _GetOutputTargetExt(spec):
+  """Returns the extension for this target, including the dot
+
+  If product_extension is specified, set target_extension to this to avoid
+  MSB8012, returns None otherwise. Ignores any target_extension settings in
+  the input files.
+
+  Arguments:
+    spec: The target dictionary containing the properties of the target.
+  Returns:
+    A string with the extension, or None
+  """
+  target_extension = spec.get('product_extension')
+  if target_extension:
+    return '.' + target_extension
+  return None
+
+
+def _GetDefines(config):
+  """Returns the list of preprocessor definitions for this configuation.
+
+  Arguments:
+    config: The dictionary that defines the special processing to be done
+            for this configuration.
+  Returns:
+    The list of preprocessor definitions.
+  """
+  defines = []
+  for d in config.get('defines', []):
+    if type(d) == list:
+      fd = '='.join([str(dpart) for dpart in d])
+    else:
+      fd = str(d)
+    defines.append(fd)
+  return defines
+
+
+def _GetDisabledWarnings(config):
+  return [str(i) for i in config.get('msvs_disabled_warnings', [])]
+
+
+def _GetModuleDefinition(spec):
+  def_file = ''
+  if spec['type'] in ['shared_library', 'loadable_module', 'executable']:
+    def_files = [s for s in spec.get('sources', []) if s.endswith('.def')]
+    if len(def_files) == 1:
+      def_file = _FixPath(def_files[0])
+    elif def_files:
+      raise ValueError(
+          'Multiple module definition files in one target, target %s lists '
+          'multiple .def files: %s' % (
+              spec['target_name'], ' '.join(def_files)))
+  return def_file
+
+
+def _ConvertToolsToExpectedForm(tools):
+  """Convert tools to a form expected by Visual Studio.
+
+  Arguments:
+    tools: A dictionary of settings; the tool name is the key.
+  Returns:
+    A list of Tool objects.
+  """
+  tool_list = []
+  for tool, settings in tools.iteritems():
+    # Collapse settings with lists.
+    settings_fixed = {}
+    for setting, value in settings.iteritems():
+      if type(value) == list:
+        if ((tool == 'VCLinkerTool' and
+             setting == 'AdditionalDependencies') or
+            setting == 'AdditionalOptions'):
+          settings_fixed[setting] = ' '.join(value)
+        else:
+          settings_fixed[setting] = ';'.join(value)
+      else:
+        settings_fixed[setting] = value
+    # Add in this tool.
+    tool_list.append(MSVSProject.Tool(tool, settings_fixed))
+  return tool_list
+
+
+def _AddConfigurationToMSVS(p, spec, tools, config, config_type, config_name):
+  """Add to the project file the configuration specified by config.
+
+  Arguments:
+    p: The target project being generated.
+    spec: the target project dict.
+    tools: A dictionary of settings; the tool name is the key.
+    config: The dictionary that defines the special processing to be done
+            for this configuration.
+    config_type: The configuration type, a number as defined by Microsoft.
+    config_name: The name of the configuration.
+  """
+  attributes = _GetMSVSAttributes(spec, config, config_type)
+  # Add in this configuration.
+  tool_list = _ConvertToolsToExpectedForm(tools)
+  p.AddConfig(_ConfigFullName(config_name, config),
+              attrs=attributes, tools=tool_list)
+
+
+def _GetMSVSAttributes(spec, config, config_type):
+  # Prepare configuration attributes.
+  prepared_attrs = {}
+  source_attrs = config.get('msvs_configuration_attributes', {})
+  for a in source_attrs:
+    prepared_attrs[a] = source_attrs[a]
+  # Add props files.
+  vsprops_dirs = config.get('msvs_props', [])
+  vsprops_dirs = _FixPaths(vsprops_dirs)
+  if vsprops_dirs:
+    prepared_attrs['InheritedPropertySheets'] = ';'.join(vsprops_dirs)
+  # Set configuration type.
+  prepared_attrs['ConfigurationType'] = config_type
+  output_dir = prepared_attrs.get('OutputDirectory',
+                                  '$(SolutionDir)$(ConfigurationName)')
+  prepared_attrs['OutputDirectory'] = _FixPath(output_dir) + '\\'
+  if 'IntermediateDirectory' not in prepared_attrs:
+    intermediate = '$(ConfigurationName)\\obj\\$(ProjectName)'
+    prepared_attrs['IntermediateDirectory'] = _FixPath(intermediate) + '\\'
+  else:
+    intermediate = _FixPath(prepared_attrs['IntermediateDirectory']) + '\\'
+    intermediate = MSVSSettings.FixVCMacroSlashes(intermediate)
+    prepared_attrs['IntermediateDirectory'] = intermediate
+  return prepared_attrs
+
+
+def _AddNormalizedSources(sources_set, sources_array):
+  sources_set.update(_NormalizedSource(s) for s in sources_array)
+
+
+def _PrepareListOfSources(spec, generator_flags, gyp_file):
+  """Prepare list of sources and excluded sources.
+
+  Besides the sources specified directly in the spec, adds the gyp file so
+  that a change to it will cause a re-compile. Also adds appropriate sources
+  for actions and copies. Assumes later stage will un-exclude files which
+  have custom build steps attached.
+
+  Arguments:
+    spec: The target dictionary containing the properties of the target.
+    gyp_file: The name of the gyp file.
+  Returns:
+    A pair of (list of sources, list of excluded sources).
+    The sources will be relative to the gyp file.
+  """
+  sources = OrderedSet()
+  _AddNormalizedSources(sources, spec.get('sources', []))
+  excluded_sources = OrderedSet()
+  # Add in the gyp file.
+  if not generator_flags.get('standalone'):
+    sources.add(gyp_file)
+
+  # Add in 'action' inputs and outputs.
+  for a in spec.get('actions', []):
+    inputs = a['inputs']
+    inputs = [_NormalizedSource(i) for i in inputs]
+    # Add all inputs to sources and excluded sources.
+    inputs = OrderedSet(inputs)
+    sources.update(inputs)
+    if not spec.get('msvs_external_builder'):
+      excluded_sources.update(inputs)
+    if int(a.get('process_outputs_as_sources', False)):
+      _AddNormalizedSources(sources, a.get('outputs', []))
+  # Add in 'copies' inputs and outputs.
+  for cpy in spec.get('copies', []):
+    _AddNormalizedSources(sources, cpy.get('files', []))
+  return (sources, excluded_sources)
+
+
+def _AdjustSourcesAndConvertToFilterHierarchy(
+    spec, options, gyp_dir, sources, excluded_sources, list_excluded, version):
+  """Adjusts the list of sources and excluded sources.
+
+  Also converts the sets to lists.
+
+  Arguments:
+    spec: The target dictionary containing the properties of the target.
+    options: Global generator options.
+    gyp_dir: The path to the gyp file being processed.
+    sources: A set of sources to be included for this project.
+    excluded_sources: A set of sources to be excluded for this project.
+    version: A MSVSVersion object.
+  Returns:
+    A trio of (list of sources, list of excluded sources,
+               path of excluded IDL file)
+  """
+  # Exclude excluded sources coming into the generator.
+  excluded_sources.update(OrderedSet(spec.get('sources_excluded', [])))
+  # Add excluded sources into sources for good measure.
+  sources.update(excluded_sources)
+  # Convert to proper windows form.
+  # NOTE: sources goes from being a set to a list here.
+  # NOTE: excluded_sources goes from being a set to a list here.
+  sources = _FixPaths(sources)
+  # Convert to proper windows form.
+  excluded_sources = _FixPaths(excluded_sources)
+
+  excluded_idl = _IdlFilesHandledNonNatively(spec, sources)
+
+  precompiled_related = _GetPrecompileRelatedFiles(spec)
+  # Find the excluded ones, minus the precompiled header related ones.
+  fully_excluded = [i for i in excluded_sources if i not in precompiled_related]
+
+  # Convert to folders and the right slashes.
+  sources = [i.split('\\') for i in sources]
+  sources = _ConvertSourcesToFilterHierarchy(sources, excluded=fully_excluded,
+                                             list_excluded=list_excluded,
+                                             msvs_version=version)
+
+  # Prune filters with a single child to flatten ugly directory structures
+  # such as ../../src/modules/module1 etc.
+  while len(sources) == 1 and isinstance(sources[0], MSVSProject.Filter):
+    sources = sources[0].contents
+
+  return sources, excluded_sources, excluded_idl
+
+
+def _IdlFilesHandledNonNatively(spec, sources):
+  # If any non-native rules use 'idl' as an extension exclude idl files.
+  # Gather a list here to use later.
+  using_idl = False
+  for rule in spec.get('rules', []):
+    if rule['extension'] == 'idl' and int(rule.get('msvs_external_rule', 0)):
+      using_idl = True
+      break
+  if using_idl:
+    excluded_idl = [i for i in sources if i.endswith('.idl')]
+  else:
+    excluded_idl = []
+  return excluded_idl
+
+
+def _GetPrecompileRelatedFiles(spec):
+  # Gather a list of precompiled header related sources.
+  precompiled_related = []
+  for _, config in spec['configurations'].iteritems():
+    for k in precomp_keys:
+      f = config.get(k)
+      if f:
+        precompiled_related.append(_FixPath(f))
+  return precompiled_related
+
+
+def _ExcludeFilesFromBeingBuilt(p, spec, excluded_sources, excluded_idl,
+                                list_excluded):
+  exclusions = _GetExcludedFilesFromBuild(spec, excluded_sources, excluded_idl)
+  for file_name, excluded_configs in exclusions.iteritems():
+    if (not list_excluded and
+            len(excluded_configs) == len(spec['configurations'])):
+      # If we're not listing excluded files, then they won't appear in the
+      # project, so don't try to configure them to be excluded.
+      pass
+    else:
+      for config_name, config in excluded_configs:
+        p.AddFileConfig(file_name, _ConfigFullName(config_name, config),
+                        {'ExcludedFromBuild': 'true'})
+
+
+def _GetExcludedFilesFromBuild(spec, excluded_sources, excluded_idl):
+  exclusions = {}
+  # Exclude excluded sources from being built.
+  for f in excluded_sources:
+    excluded_configs = []
+    for config_name, config in spec['configurations'].iteritems():
+      precomped = [_FixPath(config.get(i, '')) for i in precomp_keys]
+      # Don't do this for ones that are precompiled header related.
+      if f not in precomped:
+        excluded_configs.append((config_name, config))
+    exclusions[f] = excluded_configs
+  # If any non-native rules use 'idl' as an extension exclude idl files.
+  # Exclude them now.
+  for f in excluded_idl:
+    excluded_configs = []
+    for config_name, config in spec['configurations'].iteritems():
+      excluded_configs.append((config_name, config))
+    exclusions[f] = excluded_configs
+  return exclusions
+
+
+def _AddToolFilesToMSVS(p, spec):
+  # Add in tool files (rules).
+  tool_files = OrderedSet()
+  for _, config in spec['configurations'].iteritems():
+    for f in config.get('msvs_tool_files', []):
+      tool_files.add(f)
+  for f in tool_files:
+    p.AddToolFile(f)
+
+
+def _HandlePreCompiledHeaders(p, sources, spec):
+  # Pre-compiled header source stubs need a different compiler flag
+  # (generate precompiled header) and any source file not of the same
+  # kind (i.e. C vs. C++) as the precompiled header source stub needs
+  # to have use of precompiled headers disabled.
+  extensions_excluded_from_precompile = []
+  for config_name, config in spec['configurations'].iteritems():
+    source = config.get('msvs_precompiled_source')
+    if source:
+      source = _FixPath(source)
+      # UsePrecompiledHeader=1 for if using precompiled headers.
+      tool = MSVSProject.Tool('VCCLCompilerTool',
+                              {'UsePrecompiledHeader': '1'})
+      p.AddFileConfig(source, _ConfigFullName(config_name, config),
+                      {}, tools=[tool])
+      basename, extension = os.path.splitext(source)
+      if extension == '.c':
+        extensions_excluded_from_precompile = ['.cc', '.cpp', '.cxx']
+      else:
+        extensions_excluded_from_precompile = ['.c']
+  def DisableForSourceTree(source_tree):
+    for source in source_tree:
+      if isinstance(source, MSVSProject.Filter):
+        DisableForSourceTree(source.contents)
+      else:
+        basename, extension = os.path.splitext(source)
+        if extension in extensions_excluded_from_precompile:
+          for config_name, config in spec['configurations'].iteritems():
+            tool = MSVSProject.Tool('VCCLCompilerTool',
+                                    {'UsePrecompiledHeader': '0',
+                                     'ForcedIncludeFiles': '$(NOINHERIT)'})
+            p.AddFileConfig(_FixPath(source),
+                            _ConfigFullName(config_name, config),
+                            {}, tools=[tool])
+  # Do nothing if there was no precompiled source.
+  if extensions_excluded_from_precompile:
+    DisableForSourceTree(sources)
+
+
+def _AddActions(actions_to_add, spec, relative_path_of_gyp_file):
+  # Add actions.
+  actions = spec.get('actions', [])
+  # Don't setup_env every time. When all the actions are run together in one
+  # batch file in VS, the PATH will grow too long.
+  # Membership in this set means that the cygwin environment has been set up,
+  # and does not need to be set up again.
+  have_setup_env = set()
+  for a in actions:
+    # Attach actions to the gyp file if nothing else is there.
+    inputs = a.get('inputs') or [relative_path_of_gyp_file]
+    attached_to = inputs[0]
+    need_setup_env = attached_to not in have_setup_env
+    cmd = _BuildCommandLineForRule(spec, a, has_input_path=False,
+                                   do_setup_env=need_setup_env)
+    have_setup_env.add(attached_to)
+    # Add the action.
+    _AddActionStep(actions_to_add,
+                   inputs=inputs,
+                   outputs=a.get('outputs', []),
+                   description=a.get('message', a['action_name']),
+                   command=cmd)
+
+
+def _WriteMSVSUserFile(project_path, version, spec):
+  # Add run_as and test targets.
+  if 'run_as' in spec:
+    run_as = spec['run_as']
+    action = run_as.get('action', [])
+    environment = run_as.get('environment', [])
+    working_directory = run_as.get('working_directory', '.')
+  elif int(spec.get('test', 0)):
+    action = ['$(TargetPath)', '--gtest_print_time']
+    environment = []
+    working_directory = '.'
+  else:
+    return  # Nothing to add
+  # Write out the user file.
+  user_file = _CreateMSVSUserFile(project_path, version, spec)
+  for config_name, c_data in spec['configurations'].iteritems():
+    user_file.AddDebugSettings(_ConfigFullName(config_name, c_data),
+                               action, environment, working_directory)
+  user_file.WriteIfChanged()
+
+
+def _AddCopies(actions_to_add, spec):
+  copies = _GetCopies(spec)
+  for inputs, outputs, cmd, description in copies:
+    _AddActionStep(actions_to_add, inputs=inputs, outputs=outputs,
+                   description=description, command=cmd)
+
+
+def _GetCopies(spec):
+  copies = []
+  # Add copies.
+  for cpy in spec.get('copies', []):
+    for src in cpy.get('files', []):
+      dst = os.path.join(cpy['destination'], os.path.basename(src))
+      # _AddCustomBuildToolForMSVS() will call _FixPath() on the inputs and
+      # outputs, so do the same for our generated command line.
+      if src.endswith('/'):
+        src_bare = src[:-1]
+        base_dir = posixpath.split(src_bare)[0]
+        outer_dir = posixpath.split(src_bare)[1]
+        cmd = 'cd "%s" && xcopy /e /f /y "%s" "%s\\%s\\"' % (
+            _FixPath(base_dir), outer_dir, _FixPath(dst), outer_dir)
+        copies.append(([src], ['dummy_copies', dst], cmd,
+                       'Copying %s to %s' % (src, dst)))
+      else:
+        cmd = 'mkdir "%s" 2>nul & set ERRORLEVEL=0 & copy /Y "%s" "%s"' % (
+            _FixPath(cpy['destination']), _FixPath(src), _FixPath(dst))
+        copies.append(([src], [dst], cmd, 'Copying %s to %s' % (src, dst)))
+  return copies
+
+
+def _GetPathDict(root, path):
+  # |path| will eventually be empty (in the recursive calls) if it was initially
+  # relative; otherwise it will eventually end up as '\', 'D:\', etc.
+  if not path or path.endswith(os.sep):
+    return root
+  parent, folder = os.path.split(path)
+  parent_dict = _GetPathDict(root, parent)
+  if folder not in parent_dict:
+    parent_dict[folder] = dict()
+  return parent_dict[folder]
+
+
+def _DictsToFolders(base_path, bucket, flat):
+  # Convert to folders recursively.
+  children = []
+  for folder, contents in bucket.iteritems():
+    if type(contents) == dict:
+      folder_children = _DictsToFolders(os.path.join(base_path, folder),
+                                        contents, flat)
+      if flat:
+        children += folder_children
+      else:
+        folder_children = MSVSNew.MSVSFolder(os.path.join(base_path, folder),
+                                             name='(' + folder + ')',
+                                             entries=folder_children)
+        children.append(folder_children)
+    else:
+      children.append(contents)
+  return children
+
+
+def _CollapseSingles(parent, node):
+  # Recursively explorer the tree of dicts looking for projects which are
+  # the sole item in a folder which has the same name as the project. Bring
+  # such projects up one level.
+  if (type(node) == dict and
+      len(node) == 1 and
+      node.keys()[0] == parent + '.vcproj'):
+    return node[node.keys()[0]]
+  if type(node) != dict:
+    return node
+  for child in node:
+    node[child] = _CollapseSingles(child, node[child])
+  return node
+
+
+def _GatherSolutionFolders(sln_projects, project_objects, flat):
+  root = {}
+  # Convert into a tree of dicts on path.
+  for p in sln_projects:
+    gyp_file, target = gyp.common.ParseQualifiedTarget(p)[0:2]
+    gyp_dir = os.path.dirname(gyp_file)
+    path_dict = _GetPathDict(root, gyp_dir)
+    path_dict[target + '.vcproj'] = project_objects[p]
+  # Walk down from the top until we hit a folder that has more than one entry.
+  # In practice, this strips the top-level "src/" dir from the hierarchy in
+  # the solution.
+  while len(root) == 1 and type(root[root.keys()[0]]) == dict:
+    root = root[root.keys()[0]]
+  # Collapse singles.
+  root = _CollapseSingles('', root)
+  # Merge buckets until everything is a root entry.
+  return _DictsToFolders('', root, flat)
+
+
+def _GetPathOfProject(qualified_target, spec, options, msvs_version):
+  default_config = _GetDefaultConfiguration(spec)
+  proj_filename = default_config.get('msvs_existing_vcproj')
+  if not proj_filename:
+    proj_filename = (spec['target_name'] + options.suffix +
+                     msvs_version.ProjectExtension())
+
+  build_file = gyp.common.BuildFile(qualified_target)
+  proj_path = os.path.join(os.path.dirname(build_file), proj_filename)
+  fix_prefix = None
+  if options.generator_output:
+    project_dir_path = os.path.dirname(os.path.abspath(proj_path))
+    proj_path = os.path.join(options.generator_output, proj_path)
+    fix_prefix = gyp.common.RelativePath(project_dir_path,
+                                         os.path.dirname(proj_path))
+  return proj_path, fix_prefix
+
+
+def _GetPlatformOverridesOfProject(spec):
+  # Prepare a dict indicating which project configurations are used for which
+  # solution configurations for this target.
+  config_platform_overrides = {}
+  for config_name, c in spec['configurations'].iteritems():
+    config_fullname = _ConfigFullName(config_name, c)
+    platform = c.get('msvs_target_platform', _ConfigPlatform(c))
+    fixed_config_fullname = '%s|%s' % (
+        _ConfigBaseName(config_name, _ConfigPlatform(c)), platform)
+    config_platform_overrides[config_fullname] = fixed_config_fullname
+  return config_platform_overrides
+
+
+def _CreateProjectObjects(target_list, target_dicts, options, msvs_version):
+  """Create a MSVSProject object for the targets found in target list.
+
+  Arguments:
+    target_list: the list of targets to generate project objects for.
+    target_dicts: the dictionary of specifications.
+    options: global generator options.
+    msvs_version: the MSVSVersion object.
+  Returns:
+    A set of created projects, keyed by target.
+  """
+  global fixpath_prefix
+  # Generate each project.
+  projects = {}
+  for qualified_target in target_list:
+    spec = target_dicts[qualified_target]
+    if spec['toolset'] != 'target':
+      raise GypError(
+          'Multiple toolsets not supported in msvs build (target %s)' %
+          qualified_target)
+    proj_path, fixpath_prefix = _GetPathOfProject(qualified_target, spec,
+                                                  options, msvs_version)
+    guid = _GetGuidOfProject(proj_path, spec)
+    overrides = _GetPlatformOverridesOfProject(spec)
+    build_file = gyp.common.BuildFile(qualified_target)
+    # Create object for this project.
+    obj = MSVSNew.MSVSProject(
+        proj_path,
+        name=spec['target_name'],
+        guid=guid,
+        spec=spec,
+        build_file=build_file,
+        config_platform_overrides=overrides,
+        fixpath_prefix=fixpath_prefix)
+    # Set project toolset if any (MS build only)
+    if msvs_version.UsesVcxproj():
+      obj.set_msbuild_toolset(
+          _GetMsbuildToolsetOfProject(proj_path, spec, msvs_version))
+    projects[qualified_target] = obj
+  # Set all the dependencies, but not if we are using an external builder like
+  # ninja
+  for project in projects.values():
+    if not project.spec.get('msvs_external_builder'):
+      deps = project.spec.get('dependencies', [])
+      deps = [projects[d] for d in deps]
+      project.set_dependencies(deps)
+  return projects
+
+
+def _InitNinjaFlavor(options, target_list, target_dicts):
+  """Initialize targets for the ninja flavor.
+
+  This sets up the necessary variables in the targets to generate msvs projects
+  that use ninja as an external builder. The variables in the spec are only set
+  if they have not been set. This allows individual specs to override the
+  default values initialized here.
+  Arguments:
+    options: Options provided to the generator.
+    target_list: List of target pairs: 'base/base.gyp:base'.
+    target_dicts: Dict of target properties keyed on target pair.
+  """
+  for qualified_target in target_list:
+    spec = target_dicts[qualified_target]
+    if spec.get('msvs_external_builder'):
+      # The spec explicitly defined an external builder, so don't change it.
+      continue
+
+    path_to_ninja = spec.get('msvs_path_to_ninja', 'ninja.exe')
+
+    spec['msvs_external_builder'] = 'ninja'
+    if not spec.get('msvs_external_builder_out_dir'):
+      spec['msvs_external_builder_out_dir'] = \
+        options.depth + '/out/$(Configuration)'
+    if not spec.get('msvs_external_builder_build_cmd'):
+      spec['msvs_external_builder_build_cmd'] = [
+        path_to_ninja,
+        '-C',
+        '$(OutDir)',
+        '$(ProjectName)',
+      ]
+    if not spec.get('msvs_external_builder_clean_cmd'):
+      spec['msvs_external_builder_clean_cmd'] = [
+        path_to_ninja,
+        '-C',
+        '$(OutDir)',
+        '-t',
+        'clean',
+        '$(ProjectName)',
+      ]
+
+
+def CalculateVariables(default_variables, params):
+  """Generated variables that require params to be known."""
+
+  generator_flags = params.get('generator_flags', {})
+
+  # Select project file format version (if unset, default to auto detecting).
+  msvs_version = MSVSVersion.SelectVisualStudioVersion(
+      generator_flags.get('msvs_version', 'auto'))
+  # Stash msvs_version for later (so we don't have to probe the system twice).
+  params['msvs_version'] = msvs_version
+
+  # Set a variable so conditions can be based on msvs_version.
+  default_variables['MSVS_VERSION'] = msvs_version.ShortName()
+
+  # To determine processor word size on Windows, in addition to checking
+  # PROCESSOR_ARCHITECTURE (which reflects the word size of the current
+  # process), it is also necessary to check PROCESSOR_ARCITEW6432 (which
+  # contains the actual word size of the system when running thru WOW64).
+  if (os.environ.get('PROCESSOR_ARCHITECTURE', '').find('64') >= 0 or
+      os.environ.get('PROCESSOR_ARCHITEW6432', '').find('64') >= 0):
+    default_variables['MSVS_OS_BITS'] = 64
+  else:
+    default_variables['MSVS_OS_BITS'] = 32
+
+  if gyp.common.GetFlavor(params) == 'ninja':
+    default_variables['SHARED_INTERMEDIATE_DIR'] = '$(OutDir)gen'
+
+
+def PerformBuild(data, configurations, params):
+  options = params['options']
+  msvs_version = params['msvs_version']
+  devenv = os.path.join(msvs_version.path, 'Common7', 'IDE', 'devenv.com')
+
+  for build_file, build_file_dict in data.iteritems():
+    (build_file_root, build_file_ext) = os.path.splitext(build_file)
+    if build_file_ext != '.gyp':
+      continue
+    sln_path = build_file_root + options.suffix + '.sln'
+    if options.generator_output:
+      sln_path = os.path.join(options.generator_output, sln_path)
+
+  for config in configurations:
+    arguments = [devenv, sln_path, '/Build', config]
+    print 'Building [%s]: %s' % (config, arguments)
+    rtn = subprocess.check_call(arguments)
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  """Generate .sln and .vcproj files.
+
+  This is the entry point for this generator.
+  Arguments:
+    target_list: List of target pairs: 'base/base.gyp:base'.
+    target_dicts: Dict of target properties keyed on target pair.
+    data: Dictionary containing per .gyp data.
+  """
+  global fixpath_prefix
+
+  options = params['options']
+
+  # Get the project file format version back out of where we stashed it in
+  # GeneratorCalculatedVariables.
+  msvs_version = params['msvs_version']
+
+  generator_flags = params.get('generator_flags', {})
+
+  # Optionally shard targets marked with 'msvs_shard': SHARD_COUNT.
+  (target_list, target_dicts) = MSVSUtil.ShardTargets(target_list, target_dicts)
+
+  # Optionally use the large PDB workaround for targets marked with
+  # 'msvs_large_pdb': 1.
+  (target_list, target_dicts) = MSVSUtil.InsertLargePdbShims(
+        target_list, target_dicts, generator_default_variables)
+
+  # Optionally configure each spec to use ninja as the external builder.
+  if params.get('flavor') == 'ninja':
+    _InitNinjaFlavor(options, target_list, target_dicts)
+
+  # Prepare the set of configurations.
+  configs = set()
+  for qualified_target in target_list:
+    spec = target_dicts[qualified_target]
+    for config_name, config in spec['configurations'].iteritems():
+      configs.add(_ConfigFullName(config_name, config))
+  configs = list(configs)
+
+  # Figure out all the projects that will be generated and their guids
+  project_objects = _CreateProjectObjects(target_list, target_dicts, options,
+                                          msvs_version)
+
+  # Generate each project.
+  missing_sources = []
+  for project in project_objects.values():
+    fixpath_prefix = project.fixpath_prefix
+    missing_sources.extend(_GenerateProject(project, options, msvs_version,
+                                            generator_flags))
+  fixpath_prefix = None
+
+  for build_file in data:
+    # Validate build_file extension
+    if not build_file.endswith('.gyp'):
+      continue
+    sln_path = os.path.splitext(build_file)[0] + options.suffix + '.sln'
+    if options.generator_output:
+      sln_path = os.path.join(options.generator_output, sln_path)
+    # Get projects in the solution, and their dependents.
+    sln_projects = gyp.common.BuildFileTargets(target_list, build_file)
+    sln_projects += gyp.common.DeepDependencyTargets(target_dicts, sln_projects)
+    # Create folder hierarchy.
+    root_entries = _GatherSolutionFolders(
+        sln_projects, project_objects, flat=msvs_version.FlatSolution())
+    # Create solution.
+    sln = MSVSNew.MSVSSolution(sln_path,
+                               entries=root_entries,
+                               variants=configs,
+                               websiteProperties=False,
+                               version=msvs_version)
+    sln.Write()
+
+  if missing_sources:
+    error_message = "Missing input files:\n" + \
+                    '\n'.join(set(missing_sources))
+    if generator_flags.get('msvs_error_on_missing_sources', False):
+      raise GypError(error_message)
+    else:
+      print >> sys.stdout, "Warning: " + error_message
+
+
+def _GenerateMSBuildFiltersFile(filters_path, source_files,
+                                extension_to_rule_name):
+  """Generate the filters file.
+
+  This file is used by Visual Studio to organize the presentation of source
+  files into folders.
+
+  Arguments:
+      filters_path: The path of the file to be created.
+      source_files: The hierarchical structure of all the sources.
+      extension_to_rule_name: A dictionary mapping file extensions to rules.
+  """
+  filter_group = []
+  source_group = []
+  _AppendFiltersForMSBuild('', source_files, extension_to_rule_name,
+                           filter_group, source_group)
+  if filter_group:
+    content = ['Project',
+               {'ToolsVersion': '4.0',
+                'xmlns': 'http://schemas.microsoft.com/developer/msbuild/2003'
+               },
+               ['ItemGroup'] + filter_group,
+               ['ItemGroup'] + source_group
+              ]
+    easy_xml.WriteXmlIfChanged(content, filters_path, pretty=True, win32=True)
+  elif os.path.exists(filters_path):
+    # We don't need this filter anymore.  Delete the old filter file.
+    os.unlink(filters_path)
+
+
+def _AppendFiltersForMSBuild(parent_filter_name, sources,
+                             extension_to_rule_name,
+                             filter_group, source_group):
+  """Creates the list of filters and sources to be added in the filter file.
+
+  Args:
+      parent_filter_name: The name of the filter under which the sources are
+          found.
+      sources: The hierarchy of filters and sources to process.
+      extension_to_rule_name: A dictionary mapping file extensions to rules.
+      filter_group: The list to which filter entries will be appended.
+      source_group: The list to which source entries will be appeneded.
+  """
+  for source in sources:
+    if isinstance(source, MSVSProject.Filter):
+      # We have a sub-filter.  Create the name of that sub-filter.
+      if not parent_filter_name:
+        filter_name = source.name
+      else:
+        filter_name = '%s\\%s' % (parent_filter_name, source.name)
+      # Add the filter to the group.
+      filter_group.append(
+          ['Filter', {'Include': filter_name},
+           ['UniqueIdentifier', MSVSNew.MakeGuid(source.name)]])
+      # Recurse and add its dependents.
+      _AppendFiltersForMSBuild(filter_name, source.contents,
+                               extension_to_rule_name,
+                               filter_group, source_group)
+    else:
+      # It's a source.  Create a source entry.
+      _, element = _MapFileToMsBuildSourceType(source, extension_to_rule_name)
+      source_entry = [element, {'Include': source}]
+      # Specify the filter it is part of, if any.
+      if parent_filter_name:
+        source_entry.append(['Filter', parent_filter_name])
+      source_group.append(source_entry)
+
+
+def _MapFileToMsBuildSourceType(source, extension_to_rule_name):
+  """Returns the group and element type of the source file.
+
+  Arguments:
+      source: The source file name.
+      extension_to_rule_name: A dictionary mapping file extensions to rules.
+
+  Returns:
+      A pair of (group this file should be part of, the label of element)
+  """
+  _, ext = os.path.splitext(source)
+  if ext in extension_to_rule_name:
+    group = 'rule'
+    element = extension_to_rule_name[ext]
+  elif ext in ['.cc', '.cpp', '.c', '.cxx']:
+    group = 'compile'
+    element = 'ClCompile'
+  elif ext in ['.h', '.hxx']:
+    group = 'include'
+    element = 'ClInclude'
+  elif ext == '.rc':
+    group = 'resource'
+    element = 'ResourceCompile'
+  elif ext == '.idl':
+    group = 'midl'
+    element = 'Midl'
+  else:
+    group = 'none'
+    element = 'None'
+  return (group, element)
+
+
+def _GenerateRulesForMSBuild(output_dir, options, spec,
+                             sources, excluded_sources,
+                             props_files_of_rules, targets_files_of_rules,
+                             actions_to_add, extension_to_rule_name):
+  # MSBuild rules are implemented using three files: an XML file, a .targets
+  # file and a .props file.
+  # See http://blogs.msdn.com/b/vcblog/archive/2010/04/21/quick-help-on-vs2010-custom-build-rule.aspx
+  # for more details.
+  rules = spec.get('rules', [])
+  rules_native = [r for r in rules if not int(r.get('msvs_external_rule', 0))]
+  rules_external = [r for r in rules if int(r.get('msvs_external_rule', 0))]
+
+  msbuild_rules = []
+  for rule in rules_native:
+    # Skip a rule with no action and no inputs.
+    if 'action' not in rule and not rule.get('rule_sources', []):
+      continue
+    msbuild_rule = MSBuildRule(rule, spec)
+    msbuild_rules.append(msbuild_rule)
+    extension_to_rule_name[msbuild_rule.extension] = msbuild_rule.rule_name
+  if msbuild_rules:
+    base = spec['target_name'] + options.suffix
+    props_name = base + '.props'
+    targets_name = base + '.targets'
+    xml_name = base + '.xml'
+
+    props_files_of_rules.add(props_name)
+    targets_files_of_rules.add(targets_name)
+
+    props_path = os.path.join(output_dir, props_name)
+    targets_path = os.path.join(output_dir, targets_name)
+    xml_path = os.path.join(output_dir, xml_name)
+
+    _GenerateMSBuildRulePropsFile(props_path, msbuild_rules)
+    _GenerateMSBuildRuleTargetsFile(targets_path, msbuild_rules)
+    _GenerateMSBuildRuleXmlFile(xml_path, msbuild_rules)
+
+  if rules_external:
+    _GenerateExternalRules(rules_external, output_dir, spec,
+                           sources, options, actions_to_add)
+  _AdjustSourcesForRules(spec, rules, sources, excluded_sources)
+
+
+class MSBuildRule(object):
+  """Used to store information used to generate an MSBuild rule.
+
+  Attributes:
+    rule_name: The rule name, sanitized to use in XML.
+    target_name: The name of the target.
+    after_targets: The name of the AfterTargets element.
+    before_targets: The name of the BeforeTargets element.
+    depends_on: The name of the DependsOn element.
+    compute_output: The name of the ComputeOutput element.
+    dirs_to_make: The name of the DirsToMake element.
+    inputs: The name of the _inputs element.
+    tlog: The name of the _tlog element.
+    extension: The extension this rule applies to.
+    description: The message displayed when this rule is invoked.
+    additional_dependencies: A string listing additional dependencies.
+    outputs: The outputs of this rule.
+    command: The command used to run the rule.
+  """
+
+  def __init__(self, rule, spec):
+    self.display_name = rule['rule_name']
+    # Assure that the rule name is only characters and numbers
+    self.rule_name = re.sub(r'\W', '_', self.display_name)
+    # Create the various element names, following the example set by the
+    # Visual Studio 2008 to 2010 conversion.  I don't know if VS2010
+    # is sensitive to the exact names.
+    self.target_name = '_' + self.rule_name
+    self.after_targets = self.rule_name + 'AfterTargets'
+    self.before_targets = self.rule_name + 'BeforeTargets'
+    self.depends_on = self.rule_name + 'DependsOn'
+    self.compute_output = 'Compute%sOutput' % self.rule_name
+    self.dirs_to_make = self.rule_name + 'DirsToMake'
+    self.inputs = self.rule_name + '_inputs'
+    self.tlog = self.rule_name + '_tlog'
+    self.extension = rule['extension']
+    if not self.extension.startswith('.'):
+      self.extension = '.' + self.extension
+
+    self.description = MSVSSettings.ConvertVCMacrosToMSBuild(
+        rule.get('message', self.rule_name))
+    old_additional_dependencies = _FixPaths(rule.get('inputs', []))
+    self.additional_dependencies = (
+        ';'.join([MSVSSettings.ConvertVCMacrosToMSBuild(i)
+                  for i in old_additional_dependencies]))
+    old_outputs = _FixPaths(rule.get('outputs', []))
+    self.outputs = ';'.join([MSVSSettings.ConvertVCMacrosToMSBuild(i)
+                             for i in old_outputs])
+    old_command = _BuildCommandLineForRule(spec, rule, has_input_path=True,
+                                           do_setup_env=True)
+    self.command = MSVSSettings.ConvertVCMacrosToMSBuild(old_command)
+
+
+def _GenerateMSBuildRulePropsFile(props_path, msbuild_rules):
+  """Generate the .props file."""
+  content = ['Project',
+             {'xmlns': 'http://schemas.microsoft.com/developer/msbuild/2003'}]
+  for rule in msbuild_rules:
+    content.extend([
+        ['PropertyGroup',
+         {'Condition': "'$(%s)' == '' and '$(%s)' == '' and "
+          "'$(ConfigurationType)' != 'Makefile'" % (rule.before_targets,
+                                                    rule.after_targets)
+         },
+         [rule.before_targets, 'Midl'],
+         [rule.after_targets, 'CustomBuild'],
+        ],
+        ['PropertyGroup',
+         [rule.depends_on,
+          {'Condition': "'$(ConfigurationType)' != 'Makefile'"},
+          '_SelectedFiles;$(%s)' % rule.depends_on
+         ],
+        ],
+        ['ItemDefinitionGroup',
+         [rule.rule_name,
+          ['CommandLineTemplate', rule.command],
+          ['Outputs', rule.outputs],
+          ['ExecutionDescription', rule.description],
+          ['AdditionalDependencies', rule.additional_dependencies],
+         ],
+        ]
+    ])
+  easy_xml.WriteXmlIfChanged(content, props_path, pretty=True, win32=True)
+
+
+def _GenerateMSBuildRuleTargetsFile(targets_path, msbuild_rules):
+  """Generate the .targets file."""
+  content = ['Project',
+             {'xmlns': 'http://schemas.microsoft.com/developer/msbuild/2003'
+             }
+            ]
+  item_group = [
+      'ItemGroup',
+      ['PropertyPageSchema',
+       {'Include': '$(MSBuildThisFileDirectory)$(MSBuildThisFileName).xml'}
+      ]
+    ]
+  for rule in msbuild_rules:
+    item_group.append(
+        ['AvailableItemName',
+         {'Include': rule.rule_name},
+         ['Targets', rule.target_name],
+        ])
+  content.append(item_group)
+
+  for rule in msbuild_rules:
+    content.append(
+        ['UsingTask',
+         {'TaskName': rule.rule_name,
+          'TaskFactory': 'XamlTaskFactory',
+          'AssemblyName': 'Microsoft.Build.Tasks.v4.0'
+         },
+         ['Task', '$(MSBuildThisFileDirectory)$(MSBuildThisFileName).xml'],
+        ])
+  for rule in msbuild_rules:
+    rule_name = rule.rule_name
+    target_outputs = '%%(%s.Outputs)' % rule_name
+    target_inputs = ('%%(%s.Identity);%%(%s.AdditionalDependencies);'
+                     '$(MSBuildProjectFile)') % (rule_name, rule_name)
+    rule_inputs = '%%(%s.Identity)' % rule_name
+    extension_condition = ("'%(Extension)'=='.obj' or "
+                           "'%(Extension)'=='.res' or "
+                           "'%(Extension)'=='.rsc' or "
+                           "'%(Extension)'=='.lib'")
+    remove_section = [
+        'ItemGroup',
+        {'Condition': "'@(SelectedFiles)' != ''"},
+        [rule_name,
+         {'Remove': '@(%s)' % rule_name,
+          'Condition': "'%(Identity)' != '@(SelectedFiles)'"
+         }
+        ]
+    ]
+    inputs_section = [
+        'ItemGroup',
+        [rule.inputs, {'Include': '%%(%s.AdditionalDependencies)' % rule_name}]
+    ]
+    logging_section = [
+        'ItemGroup',
+        [rule.tlog,
+         {'Include': '%%(%s.Outputs)' % rule_name,
+          'Condition': ("'%%(%s.Outputs)' != '' and "
+                        "'%%(%s.ExcludedFromBuild)' != 'true'" %
+                        (rule_name, rule_name))
+         },
+         ['Source', "@(%s, '|')" % rule_name],
+         ['Inputs', "@(%s -> '%%(Fullpath)', ';')" % rule.inputs],
+        ],
+    ]
+    message_section = [
+        'Message',
+        {'Importance': 'High',
+         'Text': '%%(%s.ExecutionDescription)' % rule_name
+        }
+    ]
+    write_tlog_section = [
+        'WriteLinesToFile',
+        {'Condition': "'@(%s)' != '' and '%%(%s.ExcludedFromBuild)' != "
+         "'true'" % (rule.tlog, rule.tlog),
+         'File': '$(IntDir)$(ProjectName).write.1.tlog',
+         'Lines': "^%%(%s.Source);@(%s->'%%(Fullpath)')" % (rule.tlog,
+                                                            rule.tlog)
+        }
+    ]
+    read_tlog_section = [
+        'WriteLinesToFile',
+        {'Condition': "'@(%s)' != '' and '%%(%s.ExcludedFromBuild)' != "
+         "'true'" % (rule.tlog, rule.tlog),
+         'File': '$(IntDir)$(ProjectName).read.1.tlog',
+         'Lines': "^%%(%s.Source);%%(%s.Inputs)" % (rule.tlog, rule.tlog)
+        }
+    ]
+    command_and_input_section = [
+        rule_name,
+        {'Condition': "'@(%s)' != '' and '%%(%s.ExcludedFromBuild)' != "
+         "'true'" % (rule_name, rule_name),
+         'CommandLineTemplate': '%%(%s.CommandLineTemplate)' % rule_name,
+         'AdditionalOptions': '%%(%s.AdditionalOptions)' % rule_name,
+         'Inputs': rule_inputs
+        }
+    ]
+    content.extend([
+        ['Target',
+         {'Name': rule.target_name,
+          'BeforeTargets': '$(%s)' % rule.before_targets,
+          'AfterTargets': '$(%s)' % rule.after_targets,
+          'Condition': "'@(%s)' != ''" % rule_name,
+          'DependsOnTargets': '$(%s);%s' % (rule.depends_on,
+                                            rule.compute_output),
+          'Outputs': target_outputs,
+          'Inputs': target_inputs
+         },
+         remove_section,
+         inputs_section,
+         logging_section,
+         message_section,
+         write_tlog_section,
+         read_tlog_section,
+         command_and_input_section,
+        ],
+        ['PropertyGroup',
+         ['ComputeLinkInputsTargets',
+          '$(ComputeLinkInputsTargets);',
+          '%s;' % rule.compute_output
+         ],
+         ['ComputeLibInputsTargets',
+          '$(ComputeLibInputsTargets);',
+          '%s;' % rule.compute_output
+         ],
+        ],
+        ['Target',
+         {'Name': rule.compute_output,
+          'Condition': "'@(%s)' != ''" % rule_name
+         },
+         ['ItemGroup',
+          [rule.dirs_to_make,
+           {'Condition': "'@(%s)' != '' and "
+            "'%%(%s.ExcludedFromBuild)' != 'true'" % (rule_name, rule_name),
+            'Include': '%%(%s.Outputs)' % rule_name
+           }
+          ],
+          ['Link',
+           {'Include': '%%(%s.Identity)' % rule.dirs_to_make,
+            'Condition': extension_condition
+           }
+          ],
+          ['Lib',
+           {'Include': '%%(%s.Identity)' % rule.dirs_to_make,
+            'Condition': extension_condition
+           }
+          ],
+          ['ImpLib',
+           {'Include': '%%(%s.Identity)' % rule.dirs_to_make,
+            'Condition': extension_condition
+           }
+          ],
+         ],
+         ['MakeDir',
+          {'Directories': ("@(%s->'%%(RootDir)%%(Directory)')" %
+                           rule.dirs_to_make)
+          }
+         ]
+        ],
+    ])
+  easy_xml.WriteXmlIfChanged(content, targets_path, pretty=True, win32=True)
+
+
+def _GenerateMSBuildRuleXmlFile(xml_path, msbuild_rules):
+  # Generate the .xml file
+  content = [
+      'ProjectSchemaDefinitions',
+      {'xmlns': ('clr-namespace:Microsoft.Build.Framework.XamlTypes;'
+                 'assembly=Microsoft.Build.Framework'),
+       'xmlns:x': 'http://schemas.microsoft.com/winfx/2006/xaml',
+       'xmlns:sys': 'clr-namespace:System;assembly=mscorlib',
+       'xmlns:transformCallback':
+       'Microsoft.Cpp.Dev10.ConvertPropertyCallback'
+      }
+  ]
+  for rule in msbuild_rules:
+    content.extend([
+        ['Rule',
+         {'Name': rule.rule_name,
+          'PageTemplate': 'tool',
+          'DisplayName': rule.display_name,
+          'Order': '200'
+         },
+         ['Rule.DataSource',
+          ['DataSource',
+           {'Persistence': 'ProjectFile',
+            'ItemType': rule.rule_name
+           }
+          ]
+         ],
+         ['Rule.Categories',
+          ['Category',
+           {'Name': 'General'},
+           ['Category.DisplayName',
+            ['sys:String', 'General'],
+           ],
+          ],
+          ['Category',
+           {'Name': 'Command Line',
+            'Subtype': 'CommandLine'
+           },
+           ['Category.DisplayName',
+            ['sys:String', 'Command Line'],
+           ],
+          ],
+         ],
+         ['StringListProperty',
+          {'Name': 'Inputs',
+           'Category': 'Command Line',
+           'IsRequired': 'true',
+           'Switch': ' '
+          },
+          ['StringListProperty.DataSource',
+           ['DataSource',
+            {'Persistence': 'ProjectFile',
+             'ItemType': rule.rule_name,
+             'SourceType': 'Item'
+            }
+           ]
+          ],
+         ],
+         ['StringProperty',
+          {'Name': 'CommandLineTemplate',
+           'DisplayName': 'Command Line',
+           'Visible': 'False',
+           'IncludeInCommandLine': 'False'
+          }
+         ],
+         ['DynamicEnumProperty',
+          {'Name': rule.before_targets,
+           'Category': 'General',
+           'EnumProvider': 'Targets',
+           'IncludeInCommandLine': 'False'
+          },
+          ['DynamicEnumProperty.DisplayName',
+           ['sys:String', 'Execute Before'],
+          ],
+          ['DynamicEnumProperty.Description',
+           ['sys:String', 'Specifies the targets for the build customization'
+            ' to run before.'
+           ],
+          ],
+          ['DynamicEnumProperty.ProviderSettings',
+           ['NameValuePair',
+            {'Name': 'Exclude',
+             'Value': '^%s|^Compute' % rule.before_targets
+            }
+           ]
+          ],
+          ['DynamicEnumProperty.DataSource',
+           ['DataSource',
+            {'Persistence': 'ProjectFile',
+             'HasConfigurationCondition': 'true'
+            }
+           ]
+          ],
+         ],
+         ['DynamicEnumProperty',
+          {'Name': rule.after_targets,
+           'Category': 'General',
+           'EnumProvider': 'Targets',
+           'IncludeInCommandLine': 'False'
+          },
+          ['DynamicEnumProperty.DisplayName',
+           ['sys:String', 'Execute After'],
+          ],
+          ['DynamicEnumProperty.Description',
+           ['sys:String', ('Specifies the targets for the build customization'
+                           ' to run after.')
+           ],
+          ],
+          ['DynamicEnumProperty.ProviderSettings',
+           ['NameValuePair',
+            {'Name': 'Exclude',
+             'Value': '^%s|^Compute' % rule.after_targets
+            }
+           ]
+          ],
+          ['DynamicEnumProperty.DataSource',
+           ['DataSource',
+            {'Persistence': 'ProjectFile',
+             'ItemType': '',
+             'HasConfigurationCondition': 'true'
+            }
+           ]
+          ],
+         ],
+         ['StringListProperty',
+          {'Name': 'Outputs',
+           'DisplayName': 'Outputs',
+           'Visible': 'False',
+           'IncludeInCommandLine': 'False'
+          }
+         ],
+         ['StringProperty',
+          {'Name': 'ExecutionDescription',
+           'DisplayName': 'Execution Description',
+           'Visible': 'False',
+           'IncludeInCommandLine': 'False'
+          }
+         ],
+         ['StringListProperty',
+          {'Name': 'AdditionalDependencies',
+           'DisplayName': 'Additional Dependencies',
+           'IncludeInCommandLine': 'False',
+           'Visible': 'false'
+          }
+         ],
+         ['StringProperty',
+          {'Subtype': 'AdditionalOptions',
+           'Name': 'AdditionalOptions',
+           'Category': 'Command Line'
+          },
+          ['StringProperty.DisplayName',
+           ['sys:String', 'Additional Options'],
+          ],
+          ['StringProperty.Description',
+           ['sys:String', 'Additional Options'],
+          ],
+         ],
+        ],
+        ['ItemType',
+         {'Name': rule.rule_name,
+          'DisplayName': rule.display_name
+         }
+        ],
+        ['FileExtension',
+         {'Name': '*' + rule.extension,
+          'ContentType': rule.rule_name
+         }
+        ],
+        ['ContentType',
+         {'Name': rule.rule_name,
+          'DisplayName': '',
+          'ItemType': rule.rule_name
+         }
+        ]
+    ])
+  easy_xml.WriteXmlIfChanged(content, xml_path, pretty=True, win32=True)
+
+
+def _GetConfigurationAndPlatform(name, settings):
+  configuration = name.rsplit('_', 1)[0]
+  platform = settings.get('msvs_configuration_platform', 'Win32')
+  return (configuration, platform)
+
+
+def _GetConfigurationCondition(name, settings):
+  return (r"'$(Configuration)|$(Platform)'=='%s|%s'" %
+          _GetConfigurationAndPlatform(name, settings))
+
+
+def _GetMSBuildProjectConfigurations(configurations):
+  group = ['ItemGroup', {'Label': 'ProjectConfigurations'}]
+  for (name, settings) in sorted(configurations.iteritems()):
+    configuration, platform = _GetConfigurationAndPlatform(name, settings)
+    designation = '%s|%s' % (configuration, platform)
+    group.append(
+        ['ProjectConfiguration', {'Include': designation},
+         ['Configuration', configuration],
+         ['Platform', platform]])
+  return [group]
+
+
+def _GetMSBuildGlobalProperties(spec, guid, gyp_file_name):
+  namespace = os.path.splitext(gyp_file_name)[0]
+  return [
+      ['PropertyGroup', {'Label': 'Globals'},
+       ['ProjectGuid', guid],
+       ['Keyword', 'Win32Proj'],
+       ['RootNamespace', namespace],
+      ]
+  ]
+
+
+def _GetMSBuildConfigurationDetails(spec, build_file):
+  properties = {}
+  for name, settings in spec['configurations'].iteritems():
+    msbuild_attributes = _GetMSBuildAttributes(spec, settings, build_file)
+    condition = _GetConfigurationCondition(name, settings)
+    character_set = msbuild_attributes.get('CharacterSet')
+    _AddConditionalProperty(properties, condition, 'ConfigurationType',
+                            msbuild_attributes['ConfigurationType'])
+    if character_set:
+      _AddConditionalProperty(properties, condition, 'CharacterSet',
+                              character_set)
+  return _GetMSBuildPropertyGroup(spec, 'Configuration', properties)
+
+
+def _GetMSBuildLocalProperties(msbuild_toolset):
+  # Currently the only local property we support is PlatformToolset
+  properties = {}
+  if msbuild_toolset:
+    properties = [
+        ['PropertyGroup', {'Label': 'Locals'},
+          ['PlatformToolset', msbuild_toolset],
+        ]
+      ]
+  return properties
+
+
+def _GetMSBuildPropertySheets(configurations):
+  user_props = r'$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props'
+  additional_props = {}
+  props_specified = False
+  for name, settings in sorted(configurations.iteritems()):
+    configuration = _GetConfigurationCondition(name, settings)
+    if settings.has_key('msbuild_props'):
+      additional_props[configuration] = _FixPaths(settings['msbuild_props'])
+      props_specified = True
+    else:
+     additional_props[configuration] = ''
+
+  if not props_specified:
+    return [
+        ['ImportGroup',
+         {'Label': 'PropertySheets'},
+         ['Import',
+          {'Project': user_props,
+           'Condition': "exists('%s')" % user_props,
+           'Label': 'LocalAppDataPlatform'
+          }
+         ]
+        ]
+    ]
+  else:
+    sheets = []
+    for condition, props in additional_props.iteritems():
+      import_group = [
+        'ImportGroup',
+        {'Label': 'PropertySheets',
+         'Condition': condition
+        },
+        ['Import',
+         {'Project': user_props,
+          'Condition': "exists('%s')" % user_props,
+          'Label': 'LocalAppDataPlatform'
+         }
+        ]
+      ]
+      for props_file in props:
+        import_group.append(['Import', {'Project':props_file}])
+      sheets.append(import_group)
+    return sheets
+
+def _ConvertMSVSBuildAttributes(spec, config, build_file):
+  config_type = _GetMSVSConfigurationType(spec, build_file)
+  msvs_attributes = _GetMSVSAttributes(spec, config, config_type)
+  msbuild_attributes = {}
+  for a in msvs_attributes:
+    if a in ['IntermediateDirectory', 'OutputDirectory']:
+      directory = MSVSSettings.ConvertVCMacrosToMSBuild(msvs_attributes[a])
+      if not directory.endswith('\\'):
+        directory += '\\'
+      msbuild_attributes[a] = directory
+    elif a == 'CharacterSet':
+      msbuild_attributes[a] = _ConvertMSVSCharacterSet(msvs_attributes[a])
+    elif a == 'ConfigurationType':
+      msbuild_attributes[a] = _ConvertMSVSConfigurationType(msvs_attributes[a])
+    else:
+      print 'Warning: Do not know how to convert MSVS attribute ' + a
+  return msbuild_attributes
+
+
+def _ConvertMSVSCharacterSet(char_set):
+  if char_set.isdigit():
+    char_set = {
+        '0': 'MultiByte',
+        '1': 'Unicode',
+        '2': 'MultiByte',
+    }[char_set]
+  return char_set
+
+
+def _ConvertMSVSConfigurationType(config_type):
+  if config_type.isdigit():
+    config_type = {
+        '1': 'Application',
+        '2': 'DynamicLibrary',
+        '4': 'StaticLibrary',
+        '10': 'Utility'
+    }[config_type]
+  return config_type
+
+
+def _GetMSBuildAttributes(spec, config, build_file):
+  if 'msbuild_configuration_attributes' not in config:
+    msbuild_attributes = _ConvertMSVSBuildAttributes(spec, config, build_file)
+
+  else:
+    config_type = _GetMSVSConfigurationType(spec, build_file)
+    config_type = _ConvertMSVSConfigurationType(config_type)
+    msbuild_attributes = config.get('msbuild_configuration_attributes', {})
+    msbuild_attributes.setdefault('ConfigurationType', config_type)
+    output_dir = msbuild_attributes.get('OutputDirectory',
+                                      '$(SolutionDir)$(Configuration)')
+    msbuild_attributes['OutputDirectory'] = _FixPath(output_dir) + '\\'
+    if 'IntermediateDirectory' not in msbuild_attributes:
+      intermediate = _FixPath('$(Configuration)') + '\\'
+      msbuild_attributes['IntermediateDirectory'] = intermediate
+    if 'CharacterSet' in msbuild_attributes:
+      msbuild_attributes['CharacterSet'] = _ConvertMSVSCharacterSet(
+          msbuild_attributes['CharacterSet'])
+  if 'TargetName' not in msbuild_attributes:
+    prefix = spec.get('product_prefix', '')
+    product_name = spec.get('product_name', '$(ProjectName)')
+    target_name = prefix + product_name
+    msbuild_attributes['TargetName'] = target_name
+
+  if spec.get('msvs_external_builder'):
+    external_out_dir = spec.get('msvs_external_builder_out_dir', '.')
+    msbuild_attributes['OutputDirectory'] = _FixPath(external_out_dir) + '\\'
+
+  # Make sure that 'TargetPath' matches 'Lib.OutputFile' or 'Link.OutputFile'
+  # (depending on the tool used) to avoid MSB8012 warning.
+  msbuild_tool_map = {
+      'executable': 'Link',
+      'shared_library': 'Link',
+      'loadable_module': 'Link',
+      'static_library': 'Lib',
+  }
+  msbuild_tool = msbuild_tool_map.get(spec['type'])
+  if msbuild_tool:
+    msbuild_settings = config['finalized_msbuild_settings']
+    out_file = msbuild_settings[msbuild_tool].get('OutputFile')
+    if out_file:
+      msbuild_attributes['TargetPath'] = _FixPath(out_file)
+    target_ext = msbuild_settings[msbuild_tool].get('TargetExt')
+    if target_ext:
+      msbuild_attributes['TargetExt'] = target_ext
+
+  return msbuild_attributes
+
+
+def _GetMSBuildConfigurationGlobalProperties(spec, configurations, build_file):
+  # TODO(jeanluc) We could optimize out the following and do it only if
+  # there are actions.
+  # TODO(jeanluc) Handle the equivalent of setting 'CYGWIN=nontsec'.
+  new_paths = []
+  cygwin_dirs = spec.get('msvs_cygwin_dirs', ['.'])[0]
+  if cygwin_dirs:
+    cyg_path = '$(MSBuildProjectDirectory)\\%s\\bin\\' % _FixPath(cygwin_dirs)
+    new_paths.append(cyg_path)
+    # TODO(jeanluc) Change the convention to have both a cygwin_dir and a
+    # python_dir.
+    python_path = cyg_path.replace('cygwin\\bin', 'python_26')
+    new_paths.append(python_path)
+    if new_paths:
+      new_paths = '$(ExecutablePath);' + ';'.join(new_paths)
+
+  properties = {}
+  for (name, configuration) in sorted(configurations.iteritems()):
+    condition = _GetConfigurationCondition(name, configuration)
+    attributes = _GetMSBuildAttributes(spec, configuration, build_file)
+    msbuild_settings = configuration['finalized_msbuild_settings']
+    _AddConditionalProperty(properties, condition, 'IntDir',
+                            attributes['IntermediateDirectory'])
+    _AddConditionalProperty(properties, condition, 'OutDir',
+                            attributes['OutputDirectory'])
+    _AddConditionalProperty(properties, condition, 'TargetName',
+                            attributes['TargetName'])
+
+    if attributes.get('TargetPath'):
+      _AddConditionalProperty(properties, condition, 'TargetPath',
+                              attributes['TargetPath'])
+    if attributes.get('TargetExt'):
+      _AddConditionalProperty(properties, condition, 'TargetExt',
+                              attributes['TargetExt'])
+
+    if new_paths:
+      _AddConditionalProperty(properties, condition, 'ExecutablePath',
+                              new_paths)
+    tool_settings = msbuild_settings.get('', {})
+    for name, value in sorted(tool_settings.iteritems()):
+      formatted_value = _GetValueFormattedForMSBuild('', name, value)
+      _AddConditionalProperty(properties, condition, name, formatted_value)
+  return _GetMSBuildPropertyGroup(spec, None, properties)
+
+
+def _AddConditionalProperty(properties, condition, name, value):
+  """Adds a property / conditional value pair to a dictionary.
+
+  Arguments:
+    properties: The dictionary to be modified.  The key is the name of the
+        property.  The value is itself a dictionary; its key is the value and
+        the value a list of condition for which this value is true.
+    condition: The condition under which the named property has the value.
+    name: The name of the property.
+    value: The value of the property.
+  """
+  if name not in properties:
+    properties[name] = {}
+  values = properties[name]
+  if value not in values:
+    values[value] = []
+  conditions = values[value]
+  conditions.append(condition)
+
+
+# Regex for msvs variable references ( i.e. $(FOO) ).
+MSVS_VARIABLE_REFERENCE = re.compile('\$\(([a-zA-Z_][a-zA-Z0-9_]*)\)')
+
+
+def _GetMSBuildPropertyGroup(spec, label, properties):
+  """Returns a PropertyGroup definition for the specified properties.
+
+  Arguments:
+    spec: The target project dict.
+    label: An optional label for the PropertyGroup.
+    properties: The dictionary to be converted.  The key is the name of the
+        property.  The value is itself a dictionary; its key is the value and
+        the value a list of condition for which this value is true.
+  """
+  group = ['PropertyGroup']
+  if label:
+    group.append({'Label': label})
+  num_configurations = len(spec['configurations'])
+  def GetEdges(node):
+    # Use a definition of edges such that user_of_variable -> used_varible.
+    # This happens to be easier in this case, since a variable's
+    # definition contains all variables it references in a single string.
+    edges = set()
+    for value in sorted(properties[node].keys()):
+      # Add to edges all $(...) references to variables.
+      #
+      # Variable references that refer to names not in properties are excluded
+      # These can exist for instance to refer built in definitions like
+      # $(SolutionDir).
+      #
+      # Self references are ignored. Self reference is used in a few places to
+      # append to the default value. I.e. PATH=$(PATH);other_path
+      edges.update(set([v for v in MSVS_VARIABLE_REFERENCE.findall(value)
+                        if v in properties and v != node]))
+    return edges
+  properties_ordered = gyp.common.TopologicallySorted(
+      properties.keys(), GetEdges)
+  # Walk properties in the reverse of a topological sort on
+  # user_of_variable -> used_variable as this ensures variables are
+  # defined before they are used.
+  # NOTE: reverse(topsort(DAG)) = topsort(reverse_edges(DAG))
+  for name in reversed(properties_ordered):
+    values = properties[name]
+    for value, conditions in sorted(values.iteritems()):
+      if len(conditions) == num_configurations:
+        # If the value is the same all configurations,
+        # just add one unconditional entry.
+        group.append([name, value])
+      else:
+        for condition in conditions:
+          group.append([name, {'Condition': condition}, value])
+  return [group]
+
+
+def _GetMSBuildToolSettingsSections(spec, configurations):
+  groups = []
+  for (name, configuration) in sorted(configurations.iteritems()):
+    msbuild_settings = configuration['finalized_msbuild_settings']
+    group = ['ItemDefinitionGroup',
+             {'Condition': _GetConfigurationCondition(name, configuration)}
+            ]
+    for tool_name, tool_settings in sorted(msbuild_settings.iteritems()):
+      # Skip the tool named '' which is a holder of global settings handled
+      # by _GetMSBuildConfigurationGlobalProperties.
+      if tool_name:
+        if tool_settings:
+          tool = [tool_name]
+          for name, value in sorted(tool_settings.iteritems()):
+            formatted_value = _GetValueFormattedForMSBuild(tool_name, name,
+                                                           value)
+            tool.append([name, formatted_value])
+          group.append(tool)
+    groups.append(group)
+  return groups
+
+
+def _FinalizeMSBuildSettings(spec, configuration):
+  if 'msbuild_settings' in configuration:
+    converted = False
+    msbuild_settings = configuration['msbuild_settings']
+    MSVSSettings.ValidateMSBuildSettings(msbuild_settings)
+  else:
+    converted = True
+    msvs_settings = configuration.get('msvs_settings', {})
+    msbuild_settings = MSVSSettings.ConvertToMSBuildSettings(msvs_settings)
+  include_dirs, resource_include_dirs = _GetIncludeDirs(configuration)
+  libraries = _GetLibraries(spec)
+  library_dirs = _GetLibraryDirs(configuration)
+  out_file, _, msbuild_tool = _GetOutputFilePathAndTool(spec, msbuild=True)
+  target_ext = _GetOutputTargetExt(spec)
+  defines = _GetDefines(configuration)
+  if converted:
+    # Visual Studio 2010 has TR1
+    defines = [d for d in defines if d != '_HAS_TR1=0']
+    # Warn of ignored settings
+    ignored_settings = ['msvs_tool_files']
+    for ignored_setting in ignored_settings:
+      value = configuration.get(ignored_setting)
+      if value:
+        print ('Warning: The automatic conversion to MSBuild does not handle '
+               '%s.  Ignoring setting of %s' % (ignored_setting, str(value)))
+
+  defines = [_EscapeCppDefineForMSBuild(d) for d in defines]
+  disabled_warnings = _GetDisabledWarnings(configuration)
+  prebuild = configuration.get('msvs_prebuild')
+  postbuild = configuration.get('msvs_postbuild')
+  def_file = _GetModuleDefinition(spec)
+  precompiled_header = configuration.get('msvs_precompiled_header')
+
+  # Add the information to the appropriate tool
+  # TODO(jeanluc) We could optimize and generate these settings only if
+  # the corresponding files are found, e.g. don't generate ResourceCompile
+  # if you don't have any resources.
+  _ToolAppend(msbuild_settings, 'ClCompile',
+              'AdditionalIncludeDirectories', include_dirs)
+  _ToolAppend(msbuild_settings, 'ResourceCompile',
+              'AdditionalIncludeDirectories', resource_include_dirs)
+  # Add in libraries, note that even for empty libraries, we want this
+  # set, to prevent inheriting default libraries from the enviroment.
+  _ToolSetOrAppend(msbuild_settings, 'Link', 'AdditionalDependencies',
+                  libraries)
+  _ToolAppend(msbuild_settings, 'Link', 'AdditionalLibraryDirectories',
+              library_dirs)
+  if out_file:
+    _ToolAppend(msbuild_settings, msbuild_tool, 'OutputFile', out_file,
+                only_if_unset=True)
+  if target_ext:
+    _ToolAppend(msbuild_settings, msbuild_tool, 'TargetExt', target_ext,
+                only_if_unset=True)
+  # Add defines.
+  _ToolAppend(msbuild_settings, 'ClCompile',
+              'PreprocessorDefinitions', defines)
+  _ToolAppend(msbuild_settings, 'ResourceCompile',
+              'PreprocessorDefinitions', defines)
+  # Add disabled warnings.
+  _ToolAppend(msbuild_settings, 'ClCompile',
+              'DisableSpecificWarnings', disabled_warnings)
+  # Turn on precompiled headers if appropriate.
+  if precompiled_header:
+    precompiled_header = os.path.split(precompiled_header)[1]
+    _ToolAppend(msbuild_settings, 'ClCompile', 'PrecompiledHeader', 'Use')
+    _ToolAppend(msbuild_settings, 'ClCompile',
+                'PrecompiledHeaderFile', precompiled_header)
+    _ToolAppend(msbuild_settings, 'ClCompile',
+                'ForcedIncludeFiles', [precompiled_header])
+  # Loadable modules don't generate import libraries;
+  # tell dependent projects to not expect one.
+  if spec['type'] == 'loadable_module':
+    _ToolAppend(msbuild_settings, '', 'IgnoreImportLibrary', 'true')
+  # Set the module definition file if any.
+  if def_file:
+    _ToolAppend(msbuild_settings, 'Link', 'ModuleDefinitionFile', def_file)
+  configuration['finalized_msbuild_settings'] = msbuild_settings
+  if prebuild:
+    _ToolAppend(msbuild_settings, 'PreBuildEvent', 'Command', prebuild)
+  if postbuild:
+    _ToolAppend(msbuild_settings, 'PostBuildEvent', 'Command', postbuild)
+
+
+def _GetValueFormattedForMSBuild(tool_name, name, value):
+  if type(value) == list:
+    # For some settings, VS2010 does not automatically extends the settings
+    # TODO(jeanluc) Is this what we want?
+    if name in ['AdditionalIncludeDirectories',
+                'AdditionalLibraryDirectories',
+                'AdditionalOptions',
+                'DelayLoadDLLs',
+                'DisableSpecificWarnings',
+                'PreprocessorDefinitions']:
+      value.append('%%(%s)' % name)
+    # For most tools, entries in a list should be separated with ';' but some
+    # settings use a space.  Check for those first.
+    exceptions = {
+        'ClCompile': ['AdditionalOptions'],
+        'Link': ['AdditionalOptions'],
+        'Lib': ['AdditionalOptions']}
+    if tool_name in exceptions and name in exceptions[tool_name]:
+      char = ' '
+    else:
+      char = ';'
+    formatted_value = char.join(
+        [MSVSSettings.ConvertVCMacrosToMSBuild(i) for i in value])
+  else:
+    formatted_value = MSVSSettings.ConvertVCMacrosToMSBuild(value)
+  return formatted_value
+
+
+def _VerifySourcesExist(sources, root_dir):
+  """Verifies that all source files exist on disk.
+
+  Checks that all regular source files, i.e. not created at run time,
+  exist on disk.  Missing files cause needless recompilation but no otherwise
+  visible errors.
+
+  Arguments:
+    sources: A recursive list of Filter/file names.
+    root_dir: The root directory for the relative path names.
+  Returns:
+    A list of source files that cannot be found on disk.
+  """
+  missing_sources = []
+  for source in sources:
+    if isinstance(source, MSVSProject.Filter):
+      missing_sources.extend(_VerifySourcesExist(source.contents, root_dir))
+    else:
+      if '$' not in source:
+        full_path = os.path.join(root_dir, source)
+        if not os.path.exists(full_path):
+          missing_sources.append(full_path)
+  return missing_sources
+
+
+def _GetMSBuildSources(spec, sources, exclusions, extension_to_rule_name,
+                       actions_spec, sources_handled_by_action, list_excluded):
+  groups = ['none', 'midl', 'include', 'compile', 'resource', 'rule']
+  grouped_sources = {}
+  for g in groups:
+    grouped_sources[g] = []
+
+  _AddSources2(spec, sources, exclusions, grouped_sources,
+               extension_to_rule_name, sources_handled_by_action, list_excluded)
+  sources = []
+  for g in groups:
+    if grouped_sources[g]:
+      sources.append(['ItemGroup'] + grouped_sources[g])
+  if actions_spec:
+    sources.append(['ItemGroup'] + actions_spec)
+  return sources
+
+
+def _AddSources2(spec, sources, exclusions, grouped_sources,
+                 extension_to_rule_name, sources_handled_by_action,
+                 list_excluded):
+  extensions_excluded_from_precompile = []
+  for source in sources:
+    if isinstance(source, MSVSProject.Filter):
+      _AddSources2(spec, source.contents, exclusions, grouped_sources,
+                   extension_to_rule_name, sources_handled_by_action,
+                   list_excluded)
+    else:
+      if not source in sources_handled_by_action:
+        detail = []
+        excluded_configurations = exclusions.get(source, [])
+        if len(excluded_configurations) == len(spec['configurations']):
+          detail.append(['ExcludedFromBuild', 'true'])
+        else:
+          for config_name, configuration in sorted(excluded_configurations):
+            condition = _GetConfigurationCondition(config_name, configuration)
+            detail.append(['ExcludedFromBuild',
+                           {'Condition': condition},
+                           'true'])
+        # Add precompile if needed
+        for config_name, configuration in spec['configurations'].iteritems():
+          precompiled_source = configuration.get('msvs_precompiled_source', '')
+          if precompiled_source != '':
+            precompiled_source = _FixPath(precompiled_source)
+            if not extensions_excluded_from_precompile:
+              # If the precompiled header is generated by a C source, we must
+              # not try to use it for C++ sources, and vice versa.
+              basename, extension = os.path.splitext(precompiled_source)
+              if extension == '.c':
+                extensions_excluded_from_precompile = ['.cc', '.cpp', '.cxx']
+              else:
+                extensions_excluded_from_precompile = ['.c']
+
+          if precompiled_source == source:
+            condition = _GetConfigurationCondition(config_name, configuration)
+            detail.append(['PrecompiledHeader',
+                           {'Condition': condition},
+                           'Create'
+                          ])
+          else:
+            # Turn off precompiled header usage for source files of a
+            # different type than the file that generated the
+            # precompiled header.
+            for extension in extensions_excluded_from_precompile:
+              if source.endswith(extension):
+                detail.append(['PrecompiledHeader', ''])
+                detail.append(['ForcedIncludeFiles', ''])
+
+        group, element = _MapFileToMsBuildSourceType(source,
+                                                     extension_to_rule_name)
+        grouped_sources[group].append([element, {'Include': source}] + detail)
+
+
+def _GetMSBuildProjectReferences(project):
+  references = []
+  if project.dependencies:
+    group = ['ItemGroup']
+    for dependency in project.dependencies:
+      guid = dependency.guid
+      project_dir = os.path.split(project.path)[0]
+      relative_path = gyp.common.RelativePath(dependency.path, project_dir)
+      project_ref = ['ProjectReference',
+          {'Include': relative_path},
+          ['Project', guid],
+          ['ReferenceOutputAssembly', 'false']
+          ]
+      for config in dependency.spec.get('configurations', {}).itervalues():
+        # If it's disabled in any config, turn it off in the reference.
+        if config.get('msvs_2010_disable_uldi_when_referenced', 0):
+          project_ref.append(['UseLibraryDependencyInputs', 'false'])
+          break
+      group.append(project_ref)
+    references.append(group)
+  return references
+
+
+def _GenerateMSBuildProject(project, options, version, generator_flags):
+  spec = project.spec
+  configurations = spec['configurations']
+  project_dir, project_file_name = os.path.split(project.path)
+  gyp.common.EnsureDirExists(project.path)
+  # Prepare list of sources and excluded sources.
+  gyp_path = _NormalizedSource(project.build_file)
+  relative_path_of_gyp_file = gyp.common.RelativePath(gyp_path, project_dir)
+
+  gyp_file = os.path.split(project.build_file)[1]
+  sources, excluded_sources = _PrepareListOfSources(spec, generator_flags,
+                                                    gyp_file)
+  # Add rules.
+  actions_to_add = {}
+  props_files_of_rules = set()
+  targets_files_of_rules = set()
+  extension_to_rule_name = {}
+  list_excluded = generator_flags.get('msvs_list_excluded_files', True)
+
+  # Don't generate rules if we are using an external builder like ninja.
+  if not spec.get('msvs_external_builder'):
+    _GenerateRulesForMSBuild(project_dir, options, spec,
+                             sources, excluded_sources,
+                             props_files_of_rules, targets_files_of_rules,
+                             actions_to_add, extension_to_rule_name)
+  else:
+    rules = spec.get('rules', [])
+    _AdjustSourcesForRules(spec, rules, sources, excluded_sources)
+
+  sources, excluded_sources, excluded_idl = (
+      _AdjustSourcesAndConvertToFilterHierarchy(spec, options,
+                                                project_dir, sources,
+                                                excluded_sources,
+                                                list_excluded, version))
+
+  # Don't add actions if we are using an external builder like ninja.
+  if not spec.get('msvs_external_builder'):
+    _AddActions(actions_to_add, spec, project.build_file)
+    _AddCopies(actions_to_add, spec)
+
+    # NOTE: this stanza must appear after all actions have been decided.
+    # Don't excluded sources with actions attached, or they won't run.
+    excluded_sources = _FilterActionsFromExcluded(
+        excluded_sources, actions_to_add)
+
+  exclusions = _GetExcludedFilesFromBuild(spec, excluded_sources, excluded_idl)
+  actions_spec, sources_handled_by_action = _GenerateActionsForMSBuild(
+      spec, actions_to_add)
+
+  _GenerateMSBuildFiltersFile(project.path + '.filters', sources,
+                              extension_to_rule_name)
+  missing_sources = _VerifySourcesExist(sources, project_dir)
+
+  for configuration in configurations.itervalues():
+    _FinalizeMSBuildSettings(spec, configuration)
+
+  # Add attributes to root element
+
+  import_default_section = [
+      ['Import', {'Project': r'$(VCTargetsPath)\Microsoft.Cpp.Default.props'}]]
+  import_cpp_props_section = [
+      ['Import', {'Project': r'$(VCTargetsPath)\Microsoft.Cpp.props'}]]
+  import_cpp_targets_section = [
+      ['Import', {'Project': r'$(VCTargetsPath)\Microsoft.Cpp.targets'}]]
+  macro_section = [['PropertyGroup', {'Label': 'UserMacros'}]]
+
+  content = [
+      'Project',
+      {'xmlns': 'http://schemas.microsoft.com/developer/msbuild/2003',
+       'ToolsVersion': version.ProjectVersion(),
+       'DefaultTargets': 'Build'
+      }]
+
+  content += _GetMSBuildProjectConfigurations(configurations)
+  content += _GetMSBuildGlobalProperties(spec, project.guid, project_file_name)
+  content += import_default_section
+  content += _GetMSBuildConfigurationDetails(spec, project.build_file)
+  content += _GetMSBuildLocalProperties(project.msbuild_toolset)
+  content += import_cpp_props_section
+  content += _GetMSBuildExtensions(props_files_of_rules)
+  content += _GetMSBuildPropertySheets(configurations)
+  content += macro_section
+  content += _GetMSBuildConfigurationGlobalProperties(spec, configurations,
+                                                      project.build_file)
+  content += _GetMSBuildToolSettingsSections(spec, configurations)
+  content += _GetMSBuildSources(
+      spec, sources, exclusions, extension_to_rule_name, actions_spec,
+      sources_handled_by_action, list_excluded)
+  content += _GetMSBuildProjectReferences(project)
+  content += import_cpp_targets_section
+  content += _GetMSBuildExtensionTargets(targets_files_of_rules)
+
+  if spec.get('msvs_external_builder'):
+    content += _GetMSBuildExternalBuilderTargets(spec)
+
+  # TODO(jeanluc) File a bug to get rid of runas.  We had in MSVS:
+  # has_run_as = _WriteMSVSUserFile(project.path, version, spec)
+
+  easy_xml.WriteXmlIfChanged(content, project.path, pretty=True, win32=True)
+
+  return missing_sources
+
+
+def _GetMSBuildExternalBuilderTargets(spec):
+  """Return a list of MSBuild targets for external builders.
+
+  Right now, only "Build" and "Clean" targets are generated.
+
+  Arguments:
+    spec: The gyp target spec.
+  Returns:
+    List of MSBuild 'Target' specs.
+  """
+  build_cmd = _BuildCommandLineForRuleRaw(
+      spec, spec['msvs_external_builder_build_cmd'],
+      False, False, False, False)
+  build_target = ['Target', {'Name': 'Build'}]
+  build_target.append(['Exec', {'Command': build_cmd}])
+
+  clean_cmd = _BuildCommandLineForRuleRaw(
+      spec, spec['msvs_external_builder_clean_cmd'],
+      False, False, False, False)
+  clean_target = ['Target', {'Name': 'Clean'}]
+  clean_target.append(['Exec', {'Command': clean_cmd}])
+
+  return [build_target, clean_target]
+
+
+def _GetMSBuildExtensions(props_files_of_rules):
+  extensions = ['ImportGroup', {'Label': 'ExtensionSettings'}]
+  for props_file in props_files_of_rules:
+    extensions.append(['Import', {'Project': props_file}])
+  return [extensions]
+
+
+def _GetMSBuildExtensionTargets(targets_files_of_rules):
+  targets_node = ['ImportGroup', {'Label': 'ExtensionTargets'}]
+  for targets_file in sorted(targets_files_of_rules):
+    targets_node.append(['Import', {'Project': targets_file}])
+  return [targets_node]
+
+
+def _GenerateActionsForMSBuild(spec, actions_to_add):
+  """Add actions accumulated into an actions_to_add, merging as needed.
+
+  Arguments:
+    spec: the target project dict
+    actions_to_add: dictionary keyed on input name, which maps to a list of
+        dicts describing the actions attached to that input file.
+
+  Returns:
+    A pair of (action specification, the sources handled by this action).
+  """
+  sources_handled_by_action = OrderedSet()
+  actions_spec = []
+  for primary_input, actions in actions_to_add.iteritems():
+    inputs = OrderedSet()
+    outputs = OrderedSet()
+    descriptions = []
+    commands = []
+    for action in actions:
+      inputs.update(OrderedSet(action['inputs']))
+      outputs.update(OrderedSet(action['outputs']))
+      descriptions.append(action['description'])
+      cmd = action['command']
+      # For most actions, add 'call' so that actions that invoke batch files
+      # return and continue executing.  msbuild_use_call provides a way to
+      # disable this but I have not seen any adverse effect from doing that
+      # for everything.
+      if action.get('msbuild_use_call', True):
+        cmd = 'call ' + cmd
+      commands.append(cmd)
+    # Add the custom build action for one input file.
+    description = ', and also '.join(descriptions)
+
+    # We can't join the commands simply with && because the command line will
+    # get too long. See also _AddActions: cygwin's setup_env mustn't be called
+    # for every invocation or the command that sets the PATH will grow too
+    # long.
+    command = (
+        '\r\nif %errorlevel% neq 0 exit /b %errorlevel%\r\n'.join(commands))
+    _AddMSBuildAction(spec,
+                      primary_input,
+                      inputs,
+                      outputs,
+                      command,
+                      description,
+                      sources_handled_by_action,
+                      actions_spec)
+  return actions_spec, sources_handled_by_action
+
+
+def _AddMSBuildAction(spec, primary_input, inputs, outputs, cmd, description,
+                      sources_handled_by_action, actions_spec):
+  command = MSVSSettings.ConvertVCMacrosToMSBuild(cmd)
+  primary_input = _FixPath(primary_input)
+  inputs_array = _FixPaths(inputs)
+  outputs_array = _FixPaths(outputs)
+  additional_inputs = ';'.join([i for i in inputs_array
+                                if i != primary_input])
+  outputs = ';'.join(outputs_array)
+  sources_handled_by_action.add(primary_input)
+  action_spec = ['CustomBuild', {'Include': primary_input}]
+  action_spec.extend(
+      # TODO(jeanluc) 'Document' for all or just if as_sources?
+      [['FileType', 'Document'],
+       ['Command', command],
+       ['Message', description],
+       ['Outputs', outputs]
+      ])
+  if additional_inputs:
+    action_spec.append(['AdditionalInputs', additional_inputs])
+  actions_spec.append(action_spec)
diff --git a/deps/gyp/pylib/gyp/generator/msvs_test.py b/deps/gyp/pylib/gyp/generator/msvs_test.py
new file mode 100755
index 0000000000..c0b021df50
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/msvs_test.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+""" Unit tests for the msvs.py file. """
+
+import gyp.generator.msvs as msvs
+import unittest
+import StringIO
+
+
+class TestSequenceFunctions(unittest.TestCase):
+
+  def setUp(self):
+    self.stderr = StringIO.StringIO()
+
+  def test_GetLibraries(self):
+    self.assertEqual(
+      msvs._GetLibraries({}),
+      [])
+    self.assertEqual(
+      msvs._GetLibraries({'libraries': []}),
+      [])
+    self.assertEqual(
+      msvs._GetLibraries({'other':'foo', 'libraries': ['a.lib']}),
+      ['a.lib'])
+    self.assertEqual(
+      msvs._GetLibraries({'libraries': ['-la']}),
+      ['a.lib'])
+    self.assertEqual(
+      msvs._GetLibraries({'libraries': ['a.lib', 'b.lib', 'c.lib', '-lb.lib',
+                                   '-lb.lib', 'd.lib', 'a.lib']}),
+      ['c.lib', 'b.lib', 'd.lib', 'a.lib'])
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/generator/ninja.py b/deps/gyp/pylib/gyp/generator/ninja.py
new file mode 100644
index 0000000000..1ed23f64cc
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/ninja.py
@@ -0,0 +1,2156 @@
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import copy
+import hashlib
+import json
+import multiprocessing
+import os.path
+import re
+import signal
+import subprocess
+import sys
+import gyp
+import gyp.common
+import gyp.msvs_emulation
+import gyp.MSVSUtil as MSVSUtil
+import gyp.xcode_emulation
+from cStringIO import StringIO
+
+from gyp.common import GetEnvironFallback
+import gyp.ninja_syntax as ninja_syntax
+
+generator_default_variables = {
+  'EXECUTABLE_PREFIX': '',
+  'EXECUTABLE_SUFFIX': '',
+  'STATIC_LIB_PREFIX': 'lib',
+  'STATIC_LIB_SUFFIX': '.a',
+  'SHARED_LIB_PREFIX': 'lib',
+
+  # Gyp expects the following variables to be expandable by the build
+  # system to the appropriate locations.  Ninja prefers paths to be
+  # known at gyp time.  To resolve this, introduce special
+  # variables starting with $! and $| (which begin with a $ so gyp knows it
+  # should be treated specially, but is otherwise an invalid
+  # ninja/shell variable) that are passed to gyp here but expanded
+  # before writing out into the target .ninja files; see
+  # ExpandSpecial.
+  # $! is used for variables that represent a path and that can only appear at
+  # the start of a string, while $| is used for variables that can appear
+  # anywhere in a string.
+  'INTERMEDIATE_DIR': '$!INTERMEDIATE_DIR',
+  'SHARED_INTERMEDIATE_DIR': '$!PRODUCT_DIR/gen',
+  'PRODUCT_DIR': '$!PRODUCT_DIR',
+  'CONFIGURATION_NAME': '$|CONFIGURATION_NAME',
+
+  # Special variables that may be used by gyp 'rule' targets.
+  # We generate definitions for these variables on the fly when processing a
+  # rule.
+  'RULE_INPUT_ROOT': '${root}',
+  'RULE_INPUT_DIRNAME': '${dirname}',
+  'RULE_INPUT_PATH': '${source}',
+  'RULE_INPUT_EXT': '${ext}',
+  'RULE_INPUT_NAME': '${name}',
+}
+
+# Placates pylint.
+generator_additional_non_configuration_keys = []
+generator_additional_path_sections = []
+generator_extra_sources_for_rules = []
+generator_filelist_paths = None
+
+# TODO: figure out how to not build extra host objects in the non-cross-compile
+# case when this is enabled, and enable unconditionally.
+generator_supports_multiple_toolsets = (
+  os.environ.get('GYP_CROSSCOMPILE') or
+  os.environ.get('AR_host') or
+  os.environ.get('CC_host') or
+  os.environ.get('CXX_host') or
+  os.environ.get('AR_target') or
+  os.environ.get('CC_target') or
+  os.environ.get('CXX_target'))
+
+
+def StripPrefix(arg, prefix):
+  if arg.startswith(prefix):
+    return arg[len(prefix):]
+  return arg
+
+
+def QuoteShellArgument(arg, flavor):
+  """Quote a string such that it will be interpreted as a single argument
+  by the shell."""
+  # Rather than attempting to enumerate the bad shell characters, just
+  # whitelist common OK ones and quote anything else.
+  if re.match(r'^[a-zA-Z0-9_=.\\/-]+$', arg):
+    return arg  # No quoting necessary.
+  if flavor == 'win':
+    return gyp.msvs_emulation.QuoteForRspFile(arg)
+  return "'" + arg.replace("'", "'" + '"\'"' + "'")  + "'"
+
+
+def Define(d, flavor):
+  """Takes a preprocessor define and returns a -D parameter that's ninja- and
+  shell-escaped."""
+  if flavor == 'win':
+    # cl.exe replaces literal # characters with = in preprocesor definitions for
+    # some reason. Octal-encode to work around that.
+    d = d.replace('#', '\\%03o' % ord('#'))
+  return QuoteShellArgument(ninja_syntax.escape('-D' + d), flavor)
+
+
+def AddArch(output, arch):
+  """Adds an arch string to an output path."""
+  output, extension = os.path.splitext(output)
+  return '%s.%s%s' % (output, arch, extension)
+
+
+class Target:
+  """Target represents the paths used within a single gyp target.
+
+  Conceptually, building a single target A is a series of steps:
+
+  1) actions/rules/copies  generates source/resources/etc.
+  2) compiles              generates .o files
+  3) link                  generates a binary (library/executable)
+  4) bundle                merges the above in a mac bundle
+
+  (Any of these steps can be optional.)
+
+  From a build ordering perspective, a dependent target B could just
+  depend on the last output of this series of steps.
+
+  But some dependent commands sometimes need to reach inside the box.
+  For example, when linking B it needs to get the path to the static
+  library generated by A.
+
+  This object stores those paths.  To keep things simple, member
+  variables only store concrete paths to single files, while methods
+  compute derived values like "the last output of the target".
+  """
+  def __init__(self, type):
+    # Gyp type ("static_library", etc.) of this target.
+    self.type = type
+    # File representing whether any input dependencies necessary for
+    # dependent actions have completed.
+    self.preaction_stamp = None
+    # File representing whether any input dependencies necessary for
+    # dependent compiles have completed.
+    self.precompile_stamp = None
+    # File representing the completion of actions/rules/copies, if any.
+    self.actions_stamp = None
+    # Path to the output of the link step, if any.
+    self.binary = None
+    # Path to the file representing the completion of building the bundle,
+    # if any.
+    self.bundle = None
+    # On Windows, incremental linking requires linking against all the .objs
+    # that compose a .lib (rather than the .lib itself). That list is stored
+    # here.
+    self.component_objs = None
+    # Windows only. The import .lib is the output of a build step, but
+    # because dependents only link against the lib (not both the lib and the
+    # dll) we keep track of the import library here.
+    self.import_lib = None
+
+  def Linkable(self):
+    """Return true if this is a target that can be linked against."""
+    return self.type in ('static_library', 'shared_library')
+
+  def UsesToc(self, flavor):
+    """Return true if the target should produce a restat rule based on a TOC
+    file."""
+    # For bundles, the .TOC should be produced for the binary, not for
+    # FinalOutput(). But the naive approach would put the TOC file into the
+    # bundle, so don't do this for bundles for now.
+    if flavor == 'win' or self.bundle:
+      return False
+    return self.type in ('shared_library', 'loadable_module')
+
+  def PreActionInput(self, flavor):
+    """Return the path, if any, that should be used as a dependency of
+    any dependent action step."""
+    if self.UsesToc(flavor):
+      return self.FinalOutput() + '.TOC'
+    return self.FinalOutput() or self.preaction_stamp
+
+  def PreCompileInput(self):
+    """Return the path, if any, that should be used as a dependency of
+    any dependent compile step."""
+    return self.actions_stamp or self.precompile_stamp
+
+  def FinalOutput(self):
+    """Return the last output of the target, which depends on all prior
+    steps."""
+    return self.bundle or self.binary or self.actions_stamp
+
+
+# A small discourse on paths as used within the Ninja build:
+# All files we produce (both at gyp and at build time) appear in the
+# build directory (e.g. out/Debug).
+#
+# Paths within a given .gyp file are always relative to the directory
+# containing the .gyp file.  Call these "gyp paths".  This includes
+# sources as well as the starting directory a given gyp rule/action
+# expects to be run from.  We call the path from the source root to
+# the gyp file the "base directory" within the per-.gyp-file
+# NinjaWriter code.
+#
+# All paths as written into the .ninja files are relative to the build
+# directory.  Call these paths "ninja paths".
+#
+# We translate between these two notions of paths with two helper
+# functions:
+#
+# - GypPathToNinja translates a gyp path (i.e. relative to the .gyp file)
+#   into the equivalent ninja path.
+#
+# - GypPathToUniqueOutput translates a gyp path into a ninja path to write
+#   an output file; the result can be namespaced such that it is unique
+#   to the input file name as well as the output target name.
+
+class NinjaWriter:
+  def __init__(self, qualified_target, target_outputs, base_dir, build_dir,
+               output_file, toplevel_build, output_file_name, flavor,
+               toplevel_dir=None):
+    """
+    base_dir: path from source root to directory containing this gyp file,
+              by gyp semantics, all input paths are relative to this
+    build_dir: path from source root to build output
+    toplevel_dir: path to the toplevel directory
+    """
+
+    self.qualified_target = qualified_target
+    self.target_outputs = target_outputs
+    self.base_dir = base_dir
+    self.build_dir = build_dir
+    self.ninja = ninja_syntax.Writer(output_file)
+    self.toplevel_build = toplevel_build
+    self.output_file_name = output_file_name
+
+    self.flavor = flavor
+    self.abs_build_dir = None
+    if toplevel_dir is not None:
+      self.abs_build_dir = os.path.abspath(os.path.join(toplevel_dir,
+                                                        build_dir))
+    self.obj_ext = '.obj' if flavor == 'win' else '.o'
+    if flavor == 'win':
+      # See docstring of msvs_emulation.GenerateEnvironmentFiles().
+      self.win_env = {}
+      for arch in ('x86', 'x64'):
+        self.win_env[arch] = 'environment.' + arch
+
+    # Relative path from build output dir to base dir.
+    build_to_top = gyp.common.InvertRelativePath(build_dir, toplevel_dir)
+    self.build_to_base = os.path.join(build_to_top, base_dir)
+    # Relative path from base dir to build dir.
+    base_to_top = gyp.common.InvertRelativePath(base_dir, toplevel_dir)
+    self.base_to_build = os.path.join(base_to_top, build_dir)
+
+  def ExpandSpecial(self, path, product_dir=None):
+    """Expand specials like $!PRODUCT_DIR in |path|.
+
+    If |product_dir| is None, assumes the cwd is already the product
+    dir.  Otherwise, |product_dir| is the relative path to the product
+    dir.
+    """
+
+    PRODUCT_DIR = '$!PRODUCT_DIR'
+    if PRODUCT_DIR in path:
+      if product_dir:
+        path = path.replace(PRODUCT_DIR, product_dir)
+      else:
+        path = path.replace(PRODUCT_DIR + '/', '')
+        path = path.replace(PRODUCT_DIR + '\\', '')
+        path = path.replace(PRODUCT_DIR, '.')
+
+    INTERMEDIATE_DIR = '$!INTERMEDIATE_DIR'
+    if INTERMEDIATE_DIR in path:
+      int_dir = self.GypPathToUniqueOutput('gen')
+      # GypPathToUniqueOutput generates a path relative to the product dir,
+      # so insert product_dir in front if it is provided.
+      path = path.replace(INTERMEDIATE_DIR,
+                          os.path.join(product_dir or '', int_dir))
+
+    CONFIGURATION_NAME = '$|CONFIGURATION_NAME'
+    path = path.replace(CONFIGURATION_NAME, self.config_name)
+
+    return path
+
+  def ExpandRuleVariables(self, path, root, dirname, source, ext, name):
+    if self.flavor == 'win':
+      path = self.msvs_settings.ConvertVSMacros(
+          path, config=self.config_name)
+    path = path.replace(generator_default_variables['RULE_INPUT_ROOT'], root)
+    path = path.replace(generator_default_variables['RULE_INPUT_DIRNAME'],
+                        dirname)
+    path = path.replace(generator_default_variables['RULE_INPUT_PATH'], source)
+    path = path.replace(generator_default_variables['RULE_INPUT_EXT'], ext)
+    path = path.replace(generator_default_variables['RULE_INPUT_NAME'], name)
+    return path
+
+  def GypPathToNinja(self, path, env=None):
+    """Translate a gyp path to a ninja path, optionally expanding environment
+    variable references in |path| with |env|.
+
+    See the above discourse on path conversions."""
+    if env:
+      if self.flavor == 'mac':
+        path = gyp.xcode_emulation.ExpandEnvVars(path, env)
+      elif self.flavor == 'win':
+        path = gyp.msvs_emulation.ExpandMacros(path, env)
+    if path.startswith('$!'):
+      expanded = self.ExpandSpecial(path)
+      if self.flavor == 'win':
+        expanded = os.path.normpath(expanded)
+      return expanded
+    if '$|' in path:
+      path = self.ExpandSpecial(path)
+    assert '$' not in path, path
+    return os.path.normpath(os.path.join(self.build_to_base, path))
+
+  def GypPathToUniqueOutput(self, path, qualified=True):
+    """Translate a gyp path to a ninja path for writing output.
+
+    If qualified is True, qualify the resulting filename with the name
+    of the target.  This is necessary when e.g. compiling the same
+    path twice for two separate output targets.
+
+    See the above discourse on path conversions."""
+
+    path = self.ExpandSpecial(path)
+    assert not path.startswith('$'), path
+
+    # Translate the path following this scheme:
+    #   Input: foo/bar.gyp, target targ, references baz/out.o
+    #   Output: obj/foo/baz/targ.out.o (if qualified)
+    #           obj/foo/baz/out.o (otherwise)
+    #     (and obj.host instead of obj for cross-compiles)
+    #
+    # Why this scheme and not some other one?
+    # 1) for a given input, you can compute all derived outputs by matching
+    #    its path, even if the input is brought via a gyp file with '..'.
+    # 2) simple files like libraries and stamps have a simple filename.
+
+    obj = 'obj'
+    if self.toolset != 'target':
+      obj += '.' + self.toolset
+
+    path_dir, path_basename = os.path.split(path)
+    if qualified:
+      path_basename = self.name + '.' + path_basename
+    return os.path.normpath(os.path.join(obj, self.base_dir, path_dir,
+                                         path_basename))
+
+  def WriteCollapsedDependencies(self, name, targets):
+    """Given a list of targets, return a path for a single file
+    representing the result of building all the targets or None.
+
+    Uses a stamp file if necessary."""
+
+    assert targets == filter(None, targets), targets
+    if len(targets) == 0:
+      return None
+    if len(targets) > 1:
+      stamp = self.GypPathToUniqueOutput(name + '.stamp')
+      targets = self.ninja.build(stamp, 'stamp', targets)
+      self.ninja.newline()
+    return targets[0]
+
+  def _SubninjaNameForArch(self, arch):
+    output_file_base = os.path.splitext(self.output_file_name)[0]
+    return '%s.%s.ninja' % (output_file_base, arch)
+
+  def WriteSpec(self, spec, config_name, generator_flags):
+    """The main entry point for NinjaWriter: write the build rules for a spec.
+
+    Returns a Target object, which represents the output paths for this spec.
+    Returns None if there are no outputs (e.g. a settings-only 'none' type
+    target)."""
+
+    self.config_name = config_name
+    self.name = spec['target_name']
+    self.toolset = spec['toolset']
+    config = spec['configurations'][config_name]
+    self.target = Target(spec['type'])
+    self.is_standalone_static_library = bool(
+        spec.get('standalone_static_library', 0))
+    # Track if this target contains any C++ files, to decide if gcc or g++
+    # should be used for linking.
+    self.uses_cpp = False
+
+    self.is_mac_bundle = gyp.xcode_emulation.IsMacBundle(self.flavor, spec)
+    self.xcode_settings = self.msvs_settings = None
+    if self.flavor == 'mac':
+      self.xcode_settings = gyp.xcode_emulation.XcodeSettings(spec)
+    if self.flavor == 'win':
+      self.msvs_settings = gyp.msvs_emulation.MsvsSettings(spec,
+                                                           generator_flags)
+      arch = self.msvs_settings.GetArch(config_name)
+      self.ninja.variable('arch', self.win_env[arch])
+      self.ninja.variable('cc', '$cl_' + arch)
+      self.ninja.variable('cxx', '$cl_' + arch)
+
+    if self.flavor == 'mac':
+      self.archs = self.xcode_settings.GetActiveArchs(config_name)
+      if len(self.archs) > 1:
+        self.arch_subninjas = dict(
+            (arch, ninja_syntax.Writer(
+                OpenOutput(os.path.join(self.toplevel_build,
+                                        self._SubninjaNameForArch(arch)),
+                           'w')))
+            for arch in self.archs)
+
+    # Compute predepends for all rules.
+    # actions_depends is the dependencies this target depends on before running
+    # any of its action/rule/copy steps.
+    # compile_depends is the dependencies this target depends on before running
+    # any of its compile steps.
+    actions_depends = []
+    compile_depends = []
+    # TODO(evan): it is rather confusing which things are lists and which
+    # are strings.  Fix these.
+    if 'dependencies' in spec:
+      for dep in spec['dependencies']:
+        if dep in self.target_outputs:
+          target = self.target_outputs[dep]
+          actions_depends.append(target.PreActionInput(self.flavor))
+          compile_depends.append(target.PreCompileInput())
+      actions_depends = filter(None, actions_depends)
+      compile_depends = filter(None, compile_depends)
+      actions_depends = self.WriteCollapsedDependencies('actions_depends',
+                                                        actions_depends)
+      compile_depends = self.WriteCollapsedDependencies('compile_depends',
+                                                        compile_depends)
+      self.target.preaction_stamp = actions_depends
+      self.target.precompile_stamp = compile_depends
+
+    # Write out actions, rules, and copies.  These must happen before we
+    # compile any sources, so compute a list of predependencies for sources
+    # while we do it.
+    extra_sources = []
+    mac_bundle_depends = []
+    self.target.actions_stamp = self.WriteActionsRulesCopies(
+        spec, extra_sources, actions_depends, mac_bundle_depends)
+
+    # If we have actions/rules/copies, we depend directly on those, but
+    # otherwise we depend on dependent target's actions/rules/copies etc.
+    # We never need to explicitly depend on previous target's link steps,
+    # because no compile ever depends on them.
+    compile_depends_stamp = (self.target.actions_stamp or compile_depends)
+
+    # Write out the compilation steps, if any.
+    link_deps = []
+    sources = extra_sources + spec.get('sources', [])
+    if sources:
+      if self.flavor == 'mac' and len(self.archs) > 1:
+        # Write subninja file containing compile and link commands scoped to
+        # a single arch if a fat binary is being built.
+        for arch in self.archs:
+          self.ninja.subninja(self._SubninjaNameForArch(arch))
+
+      pch = None
+      if self.flavor == 'win':
+        gyp.msvs_emulation.VerifyMissingSources(
+            sources, self.abs_build_dir, generator_flags, self.GypPathToNinja)
+        pch = gyp.msvs_emulation.PrecompiledHeader(
+            self.msvs_settings, config_name, self.GypPathToNinja,
+            self.GypPathToUniqueOutput, self.obj_ext)
+      else:
+        pch = gyp.xcode_emulation.MacPrefixHeader(
+            self.xcode_settings, self.GypPathToNinja,
+            lambda path, lang: self.GypPathToUniqueOutput(path + '-' + lang))
+      link_deps = self.WriteSources(
+          self.ninja, config_name, config, sources, compile_depends_stamp, pch,
+          spec)
+      # Some actions/rules output 'sources' that are already object files.
+      obj_outputs = [f for f in sources if f.endswith(self.obj_ext)]
+      if obj_outputs:
+        if self.flavor != 'mac' or len(self.archs) == 1:
+          link_deps += [self.GypPathToNinja(o) for o in obj_outputs]
+        else:
+          print "Warning: Actions/rules writing object files don't work with " \
+                "multiarch targets, dropping. (target %s)" % spec['target_name']
+
+
+    if self.flavor == 'win' and self.target.type == 'static_library':
+      self.target.component_objs = link_deps
+
+    # Write out a link step, if needed.
+    output = None
+    is_empty_bundle = not link_deps and not mac_bundle_depends
+    if link_deps or self.target.actions_stamp or actions_depends:
+      output = self.WriteTarget(spec, config_name, config, link_deps,
+                                self.target.actions_stamp or actions_depends)
+      if self.is_mac_bundle:
+        mac_bundle_depends.append(output)
+
+    # Bundle all of the above together, if needed.
+    if self.is_mac_bundle:
+      output = self.WriteMacBundle(spec, mac_bundle_depends, is_empty_bundle)
+
+    if not output:
+      return None
+
+    assert self.target.FinalOutput(), output
+    return self.target
+
+  def _WinIdlRule(self, source, prebuild, outputs):
+    """Handle the implicit VS .idl rule for one source file. Fills |outputs|
+    with files that are generated."""
+    outdir, output, vars, flags = self.msvs_settings.GetIdlBuildData(
+        source, self.config_name)
+    outdir = self.GypPathToNinja(outdir)
+    def fix_path(path, rel=None):
+      path = os.path.join(outdir, path)
+      dirname, basename = os.path.split(source)
+      root, ext = os.path.splitext(basename)
+      path = self.ExpandRuleVariables(
+          path, root, dirname, source, ext, basename)
+      if rel:
+        path = os.path.relpath(path, rel)
+      return path
+    vars = [(name, fix_path(value, outdir)) for name, value in vars]
+    output = [fix_path(p) for p in output]
+    vars.append(('outdir', outdir))
+    vars.append(('idlflags', flags))
+    input = self.GypPathToNinja(source)
+    self.ninja.build(output, 'idl', input,
+        variables=vars, order_only=prebuild)
+    outputs.extend(output)
+
+  def WriteWinIdlFiles(self, spec, prebuild):
+    """Writes rules to match MSVS's implicit idl handling."""
+    assert self.flavor == 'win'
+    if self.msvs_settings.HasExplicitIdlRules(spec):
+      return []
+    outputs = []
+    for source in filter(lambda x: x.endswith('.idl'), spec['sources']):
+      self._WinIdlRule(source, prebuild, outputs)
+    return outputs
+
+  def WriteActionsRulesCopies(self, spec, extra_sources, prebuild,
+                              mac_bundle_depends):
+    """Write out the Actions, Rules, and Copies steps.  Return a path
+    representing the outputs of these steps."""
+    outputs = []
+    if self.is_mac_bundle:
+      mac_bundle_resources = spec.get('mac_bundle_resources', [])[:]
+    else:
+      mac_bundle_resources = []
+    extra_mac_bundle_resources = []
+
+    if 'actions' in spec:
+      outputs += self.WriteActions(spec['actions'], extra_sources, prebuild,
+                                   extra_mac_bundle_resources)
+    if 'rules' in spec:
+      outputs += self.WriteRules(spec['rules'], extra_sources, prebuild,
+                                 mac_bundle_resources,
+                                 extra_mac_bundle_resources)
+    if 'copies' in spec:
+      outputs += self.WriteCopies(spec['copies'], prebuild, mac_bundle_depends)
+
+    if 'sources' in spec and self.flavor == 'win':
+      outputs += self.WriteWinIdlFiles(spec, prebuild)
+
+    stamp = self.WriteCollapsedDependencies('actions_rules_copies', outputs)
+
+    if self.is_mac_bundle:
+      self.WriteMacBundleResources(
+          extra_mac_bundle_resources + mac_bundle_resources, mac_bundle_depends)
+      self.WriteMacInfoPlist(mac_bundle_depends)
+
+    return stamp
+
+  def GenerateDescription(self, verb, message, fallback):
+    """Generate and return a description of a build step.
+
+    |verb| is the short summary, e.g. ACTION or RULE.
+    |message| is a hand-written description, or None if not available.
+    |fallback| is the gyp-level name of the step, usable as a fallback.
+    """
+    if self.toolset != 'target':
+      verb += '(%s)' % self.toolset
+    if message:
+      return '%s %s' % (verb, self.ExpandSpecial(message))
+    else:
+      return '%s %s: %s' % (verb, self.name, fallback)
+
+  def WriteActions(self, actions, extra_sources, prebuild,
+                   extra_mac_bundle_resources):
+    # Actions cd into the base directory.
+    env = self.GetSortedXcodeEnv()
+    if self.flavor == 'win':
+      env = self.msvs_settings.GetVSMacroEnv(
+          '$!PRODUCT_DIR', config=self.config_name)
+    all_outputs = []
+    for action in actions:
+      # First write out a rule for the action.
+      name = '%s_%s' % (action['action_name'],
+                        hashlib.md5(self.qualified_target).hexdigest())
+      description = self.GenerateDescription('ACTION',
+                                             action.get('message', None),
+                                             name)
+      is_cygwin = (self.msvs_settings.IsRuleRunUnderCygwin(action)
+                   if self.flavor == 'win' else False)
+      args = action['action']
+      rule_name, _ = self.WriteNewNinjaRule(name, args, description,
+                                            is_cygwin, env=env)
+
+      inputs = [self.GypPathToNinja(i, env) for i in action['inputs']]
+      if int(action.get('process_outputs_as_sources', False)):
+        extra_sources += action['outputs']
+      if int(action.get('process_outputs_as_mac_bundle_resources', False)):
+        extra_mac_bundle_resources += action['outputs']
+      outputs = [self.GypPathToNinja(o, env) for o in action['outputs']]
+
+      # Then write out an edge using the rule.
+      self.ninja.build(outputs, rule_name, inputs,
+                       order_only=prebuild)
+      all_outputs += outputs
+
+      self.ninja.newline()
+
+    return all_outputs
+
+  def WriteRules(self, rules, extra_sources, prebuild,
+                 mac_bundle_resources, extra_mac_bundle_resources):
+    env = self.GetSortedXcodeEnv()
+    all_outputs = []
+    for rule in rules:
+      # First write out a rule for the rule action.
+      name = '%s_%s' % (rule['rule_name'],
+                        hashlib.md5(self.qualified_target).hexdigest())
+      # Skip a rule with no action and no inputs.
+      if 'action' not in rule and not rule.get('rule_sources', []):
+        continue
+      args = rule['action']
+      description = self.GenerateDescription(
+          'RULE',
+          rule.get('message', None),
+          ('%s ' + generator_default_variables['RULE_INPUT_PATH']) % name)
+      is_cygwin = (self.msvs_settings.IsRuleRunUnderCygwin(rule)
+                   if self.flavor == 'win' else False)
+      rule_name, args = self.WriteNewNinjaRule(
+          name, args, description, is_cygwin, env=env)
+
+      # TODO: if the command references the outputs directly, we should
+      # simplify it to just use $out.
+
+      # Rules can potentially make use of some special variables which
+      # must vary per source file.
+      # Compute the list of variables we'll need to provide.
+      special_locals = ('source', 'root', 'dirname', 'ext', 'name')
+      needed_variables = set(['source'])
+      for argument in args:
+        for var in special_locals:
+          if ('${%s}' % var) in argument:
+            needed_variables.add(var)
+
+      def cygwin_munge(path):
+        if is_cygwin:
+          return path.replace('\\', '/')
+        return path
+
+      # For each source file, write an edge that generates all the outputs.
+      for source in rule.get('rule_sources', []):
+        source = os.path.normpath(source)
+        dirname, basename = os.path.split(source)
+        root, ext = os.path.splitext(basename)
+
+        # Gather the list of inputs and outputs, expanding $vars if possible.
+        outputs = [self.ExpandRuleVariables(o, root, dirname,
+                                            source, ext, basename)
+                   for o in rule['outputs']]
+        inputs = [self.ExpandRuleVariables(i, root, dirname,
+                                           source, ext, basename)
+                  for i in rule.get('inputs', [])]
+
+        if int(rule.get('process_outputs_as_sources', False)):
+          extra_sources += outputs
+
+        was_mac_bundle_resource = source in mac_bundle_resources
+        if was_mac_bundle_resource or \
+            int(rule.get('process_outputs_as_mac_bundle_resources', False)):
+          extra_mac_bundle_resources += outputs
+          # Note: This is n_resources * n_outputs_in_rule.  Put to-be-removed
+          # items in a set and remove them all in a single pass if this becomes
+          # a performance issue.
+          if was_mac_bundle_resource:
+            mac_bundle_resources.remove(source)
+
+        extra_bindings = []
+        for var in needed_variables:
+          if var == 'root':
+            extra_bindings.append(('root', cygwin_munge(root)))
+          elif var == 'dirname':
+            # '$dirname' is a parameter to the rule action, which means
+            # it shouldn't be converted to a Ninja path.  But we don't
+            # want $!PRODUCT_DIR in there either.
+            dirname_expanded = self.ExpandSpecial(dirname, self.base_to_build)
+            extra_bindings.append(('dirname', cygwin_munge(dirname_expanded)))
+          elif var == 'source':
+            # '$source' is a parameter to the rule action, which means
+            # it shouldn't be converted to a Ninja path.  But we don't
+            # want $!PRODUCT_DIR in there either.
+            source_expanded = self.ExpandSpecial(source, self.base_to_build)
+            extra_bindings.append(('source', cygwin_munge(source_expanded)))
+          elif var == 'ext':
+            extra_bindings.append(('ext', ext))
+          elif var == 'name':
+            extra_bindings.append(('name', cygwin_munge(basename)))
+          else:
+            assert var == None, repr(var)
+
+        inputs = [self.GypPathToNinja(i, env) for i in inputs]
+        outputs = [self.GypPathToNinja(o, env) for o in outputs]
+        extra_bindings.append(('unique_name',
+            hashlib.md5(outputs[0]).hexdigest()))
+        self.ninja.build(outputs, rule_name, self.GypPathToNinja(source),
+                         implicit=inputs,
+                         order_only=prebuild,
+                         variables=extra_bindings)
+
+        all_outputs.extend(outputs)
+
+    return all_outputs
+
+  def WriteCopies(self, copies, prebuild, mac_bundle_depends):
+    outputs = []
+    env = self.GetSortedXcodeEnv()
+    for copy in copies:
+      for path in copy['files']:
+        # Normalize the path so trailing slashes don't confuse us.
+        path = os.path.normpath(path)
+        basename = os.path.split(path)[1]
+        src = self.GypPathToNinja(path, env)
+        dst = self.GypPathToNinja(os.path.join(copy['destination'], basename),
+                                  env)
+        outputs += self.ninja.build(dst, 'copy', src, order_only=prebuild)
+        if self.is_mac_bundle:
+          # gyp has mac_bundle_resources to copy things into a bundle's
+          # Resources folder, but there's no built-in way to copy files to other
+          # places in the bundle. Hence, some targets use copies for this. Check
+          # if this file is copied into the current bundle, and if so add it to
+          # the bundle depends so that dependent targets get rebuilt if the copy
+          # input changes.
+          if dst.startswith(self.xcode_settings.GetBundleContentsFolderPath()):
+            mac_bundle_depends.append(dst)
+
+    return outputs
+
+  def WriteMacBundleResources(self, resources, bundle_depends):
+    """Writes ninja edges for 'mac_bundle_resources'."""
+    for output, res in gyp.xcode_emulation.GetMacBundleResources(
+        generator_default_variables['PRODUCT_DIR'],
+        self.xcode_settings, map(self.GypPathToNinja, resources)):
+      output = self.ExpandSpecial(output)
+      self.ninja.build(output, 'mac_tool', res,
+                       variables=[('mactool_cmd', 'copy-bundle-resource')])
+      bundle_depends.append(output)
+
+  def WriteMacInfoPlist(self, bundle_depends):
+    """Write build rules for bundle Info.plist files."""
+    info_plist, out, defines, extra_env = gyp.xcode_emulation.GetMacInfoPlist(
+        generator_default_variables['PRODUCT_DIR'],
+        self.xcode_settings, self.GypPathToNinja)
+    if not info_plist:
+      return
+    out = self.ExpandSpecial(out)
+    if defines:
+      # Create an intermediate file to store preprocessed results.
+      intermediate_plist = self.GypPathToUniqueOutput(
+          os.path.basename(info_plist))
+      defines = ' '.join([Define(d, self.flavor) for d in defines])
+      info_plist = self.ninja.build(
+          intermediate_plist, 'preprocess_infoplist', info_plist,
+          variables=[('defines',defines)])
+
+    env = self.GetSortedXcodeEnv(additional_settings=extra_env)
+    env = self.ComputeExportEnvString(env)
+
+    keys = self.xcode_settings.GetExtraPlistItems(self.config_name)
+    keys = QuoteShellArgument(json.dumps(keys), self.flavor)
+    self.ninja.build(out, 'copy_infoplist', info_plist,
+                     variables=[('env', env), ('keys', keys)])
+    bundle_depends.append(out)
+
+  def WriteSources(self, ninja_file, config_name, config, sources, predepends,
+                   precompiled_header, spec):
+    """Write build rules to compile all of |sources|."""
+    if self.toolset == 'host':
+      self.ninja.variable('ar', '$ar_host')
+      self.ninja.variable('cc', '$cc_host')
+      self.ninja.variable('cxx', '$cxx_host')
+      self.ninja.variable('ld', '$ld_host')
+      self.ninja.variable('ldxx', '$ldxx_host')
+
+    if self.flavor != 'mac' or len(self.archs) == 1:
+      return self.WriteSourcesForArch(
+          self.ninja, config_name, config, sources, predepends,
+          precompiled_header, spec)
+    else:
+      return dict((arch, self.WriteSourcesForArch(
+            self.arch_subninjas[arch], config_name, config, sources, predepends,
+            precompiled_header, spec, arch=arch))
+          for arch in self.archs)
+
+  def WriteSourcesForArch(self, ninja_file, config_name, config, sources,
+                          predepends, precompiled_header, spec, arch=None):
+    """Write build rules to compile all of |sources|."""
+
+    extra_defines = []
+    if self.flavor == 'mac':
+      cflags = self.xcode_settings.GetCflags(config_name, arch=arch)
+      cflags_c = self.xcode_settings.GetCflagsC(config_name)
+      cflags_cc = self.xcode_settings.GetCflagsCC(config_name)
+      cflags_objc = ['$cflags_c'] + \
+                    self.xcode_settings.GetCflagsObjC(config_name)
+      cflags_objcc = ['$cflags_cc'] + \
+                     self.xcode_settings.GetCflagsObjCC(config_name)
+    elif self.flavor == 'win':
+      cflags = self.msvs_settings.GetCflags(config_name)
+      cflags_c = self.msvs_settings.GetCflagsC(config_name)
+      cflags_cc = self.msvs_settings.GetCflagsCC(config_name)
+      extra_defines = self.msvs_settings.GetComputedDefines(config_name)
+      # See comment at cc_command for why there's two .pdb files.
+      pdbpath_c = pdbpath_cc = self.msvs_settings.GetCompilerPdbName(
+          config_name, self.ExpandSpecial)
+      if not pdbpath_c:
+        obj = 'obj'
+        if self.toolset != 'target':
+          obj += '.' + self.toolset
+        pdbpath = os.path.normpath(os.path.join(obj, self.base_dir, self.name))
+        pdbpath_c = pdbpath + '.c.pdb'
+        pdbpath_cc = pdbpath + '.cc.pdb'
+      self.WriteVariableList(ninja_file, 'pdbname_c', [pdbpath_c])
+      self.WriteVariableList(ninja_file, 'pdbname_cc', [pdbpath_cc])
+      self.WriteVariableList(ninja_file, 'pchprefix', [self.name])
+    else:
+      cflags = config.get('cflags', [])
+      cflags_c = config.get('cflags_c', [])
+      cflags_cc = config.get('cflags_cc', [])
+
+    # Respect environment variables related to build, but target-specific
+    # flags can still override them.
+    if self.toolset == 'target':
+      cflags_c = (os.environ.get('CPPFLAGS', '').split() +
+                  os.environ.get('CFLAGS', '').split() + cflags_c)
+      cflags_cc = (os.environ.get('CPPFLAGS', '').split() +
+                   os.environ.get('CXXFLAGS', '').split() + cflags_cc)
+
+    defines = config.get('defines', []) + extra_defines
+    self.WriteVariableList(ninja_file, 'defines',
+                           [Define(d, self.flavor) for d in defines])
+    if self.flavor == 'win':
+      self.WriteVariableList(ninja_file, 'rcflags',
+          [QuoteShellArgument(self.ExpandSpecial(f), self.flavor)
+           for f in self.msvs_settings.GetRcflags(config_name,
+                                                  self.GypPathToNinja)])
+
+    include_dirs = config.get('include_dirs', [])
+    env = self.GetSortedXcodeEnv()
+    if self.flavor == 'win':
+      env = self.msvs_settings.GetVSMacroEnv('$!PRODUCT_DIR',
+                                             config=config_name)
+      include_dirs = self.msvs_settings.AdjustIncludeDirs(include_dirs,
+                                                          config_name)
+    self.WriteVariableList(ninja_file, 'includes',
+        [QuoteShellArgument('-I' + self.GypPathToNinja(i, env), self.flavor)
+         for i in include_dirs])
+
+    pch_commands = precompiled_header.GetPchBuildCommands(arch)
+    if self.flavor == 'mac':
+      # Most targets use no precompiled headers, so only write these if needed.
+      for ext, var in [('c', 'cflags_pch_c'), ('cc', 'cflags_pch_cc'),
+                       ('m', 'cflags_pch_objc'), ('mm', 'cflags_pch_objcc')]:
+        include = precompiled_header.GetInclude(ext, arch)
+        if include: ninja_file.variable(var, include)
+
+    self.WriteVariableList(ninja_file, 'cflags',
+                           map(self.ExpandSpecial, cflags))
+    self.WriteVariableList(ninja_file, 'cflags_c',
+                           map(self.ExpandSpecial, cflags_c))
+    self.WriteVariableList(ninja_file, 'cflags_cc',
+                           map(self.ExpandSpecial, cflags_cc))
+    if self.flavor == 'mac':
+      self.WriteVariableList(ninja_file, 'cflags_objc',
+                             map(self.ExpandSpecial, cflags_objc))
+      self.WriteVariableList(ninja_file, 'cflags_objcc',
+                             map(self.ExpandSpecial, cflags_objcc))
+    ninja_file.newline()
+    outputs = []
+    has_rc_source = False
+    for source in sources:
+      filename, ext = os.path.splitext(source)
+      ext = ext[1:]
+      obj_ext = self.obj_ext
+      if ext in ('cc', 'cpp', 'cxx'):
+        command = 'cxx'
+        self.uses_cpp = True
+      elif ext == 'c' or (ext == 'S' and self.flavor != 'win'):
+        command = 'cc'
+      elif ext == 's' and self.flavor != 'win':  # Doesn't generate .o.d files.
+        command = 'cc_s'
+      elif (self.flavor == 'win' and ext == 'asm' and
+            self.msvs_settings.GetArch(config_name) == 'x86' and
+            not self.msvs_settings.HasExplicitAsmRules(spec)):
+        # Asm files only get auto assembled for x86 (not x64).
+        command = 'asm'
+        # Add the _asm suffix as msvs is capable of handling .cc and
+        # .asm files of the same name without collision.
+        obj_ext = '_asm.obj'
+      elif self.flavor == 'mac' and ext == 'm':
+        command = 'objc'
+      elif self.flavor == 'mac' and ext == 'mm':
+        command = 'objcxx'
+        self.uses_cpp = True
+      elif self.flavor == 'win' and ext == 'rc':
+        command = 'rc'
+        obj_ext = '.res'
+        has_rc_source = True
+      else:
+        # Ignore unhandled extensions.
+        continue
+      input = self.GypPathToNinja(source)
+      output = self.GypPathToUniqueOutput(filename + obj_ext)
+      if arch is not None:
+        output = AddArch(output, arch)
+      implicit = precompiled_header.GetObjDependencies([input], [output], arch)
+      variables = []
+      if self.flavor == 'win':
+        variables, output, implicit = precompiled_header.GetFlagsModifications(
+            input, output, implicit, command, cflags_c, cflags_cc,
+            self.ExpandSpecial)
+      ninja_file.build(output, command, input,
+                       implicit=[gch for _, _, gch in implicit],
+                       order_only=predepends, variables=variables)
+      outputs.append(output)
+
+    if has_rc_source:
+      resource_include_dirs = config.get('resource_include_dirs', include_dirs)
+      self.WriteVariableList(ninja_file, 'resource_includes',
+          [QuoteShellArgument('-I' + self.GypPathToNinja(i, env), self.flavor)
+           for i in resource_include_dirs])
+
+    self.WritePchTargets(ninja_file, pch_commands)
+
+    ninja_file.newline()
+    return outputs
+
+  def WritePchTargets(self, ninja_file, pch_commands):
+    """Writes ninja rules to compile prefix headers."""
+    if not pch_commands:
+      return
+
+    for gch, lang_flag, lang, input in pch_commands:
+      var_name = {
+        'c': 'cflags_pch_c',
+        'cc': 'cflags_pch_cc',
+        'm': 'cflags_pch_objc',
+        'mm': 'cflags_pch_objcc',
+      }[lang]
+
+      map = { 'c': 'cc', 'cc': 'cxx', 'm': 'objc', 'mm': 'objcxx', }
+      cmd = map.get(lang)
+      ninja_file.build(gch, cmd, input, variables=[(var_name, lang_flag)])
+
+  def WriteLink(self, spec, config_name, config, link_deps):
+    """Write out a link step. Fills out target.binary. """
+    if self.flavor != 'mac' or len(self.archs) == 1:
+      return self.WriteLinkForArch(
+          self.ninja, spec, config_name, config, link_deps)
+    else:
+      output = self.ComputeOutput(spec)
+      inputs = [self.WriteLinkForArch(self.arch_subninjas[arch], spec,
+                                      config_name, config, link_deps[arch],
+                                      arch=arch)
+                for arch in self.archs]
+      extra_bindings = []
+      if not self.is_mac_bundle:
+        self.AppendPostbuildVariable(extra_bindings, spec, output, output)
+      self.ninja.build(output, 'lipo', inputs, variables=extra_bindings)
+      return output
+
+  def WriteLinkForArch(self, ninja_file, spec, config_name, config,
+                       link_deps, arch=None):
+    """Write out a link step. Fills out target.binary. """
+    command = {
+      'executable':      'link',
+      'loadable_module': 'solink_module',
+      'shared_library':  'solink',
+    }[spec['type']]
+    command_suffix = ''
+
+    implicit_deps = set()
+    solibs = set()
+
+    if 'dependencies' in spec:
+      # Two kinds of dependencies:
+      # - Linkable dependencies (like a .a or a .so): add them to the link line.
+      # - Non-linkable dependencies (like a rule that generates a file
+      #   and writes a stamp file): add them to implicit_deps
+      extra_link_deps = set()
+      for dep in spec['dependencies']:
+        target = self.target_outputs.get(dep)
+        if not target:
+          continue
+        linkable = target.Linkable()
+        if linkable:
+          new_deps = []
+          if (self.flavor == 'win' and
+              target.component_objs and
+              self.msvs_settings.IsUseLibraryDependencyInputs(config_name)):
+            new_deps = target.component_objs
+          elif self.flavor == 'win' and target.import_lib:
+            new_deps = [target.import_lib]
+          elif target.UsesToc(self.flavor):
+            solibs.add(target.binary)
+            implicit_deps.add(target.binary + '.TOC')
+          else:
+            new_deps = [target.binary]
+          for new_dep in new_deps:
+            if new_dep not in extra_link_deps:
+              extra_link_deps.add(new_dep)
+              link_deps.append(new_dep)
+
+        final_output = target.FinalOutput()
+        if not linkable or final_output != target.binary:
+          implicit_deps.add(final_output)
+
+    extra_bindings = []
+    if self.uses_cpp and self.flavor != 'win':
+      extra_bindings.append(('ld', '$ldxx'))
+
+    output = self.ComputeOutput(spec, arch)
+    if arch is None and not self.is_mac_bundle:
+      self.AppendPostbuildVariable(extra_bindings, spec, output, output)
+
+    is_executable = spec['type'] == 'executable'
+    # The ldflags config key is not used on mac or win. On those platforms
+    # linker flags are set via xcode_settings and msvs_settings, respectively.
+    env_ldflags = os.environ.get('LDFLAGS', '').split()
+    if self.flavor == 'mac':
+      ldflags = self.xcode_settings.GetLdflags(config_name,
+          self.ExpandSpecial(generator_default_variables['PRODUCT_DIR']),
+          self.GypPathToNinja, arch)
+      ldflags = env_ldflags + ldflags
+    elif self.flavor == 'win':
+      manifest_base_name = self.GypPathToUniqueOutput(
+          self.ComputeOutputFileName(spec))
+      ldflags, intermediate_manifest, manifest_files = \
+          self.msvs_settings.GetLdflags(config_name, self.GypPathToNinja,
+                                        self.ExpandSpecial, manifest_base_name,
+                                        output, is_executable,
+                                        self.toplevel_build)
+      ldflags = env_ldflags + ldflags
+      self.WriteVariableList(ninja_file, 'manifests', manifest_files)
+      implicit_deps = implicit_deps.union(manifest_files)
+      if intermediate_manifest:
+        self.WriteVariableList(
+            ninja_file, 'intermediatemanifest', [intermediate_manifest])
+      command_suffix = _GetWinLinkRuleNameSuffix(
+          self.msvs_settings.IsEmbedManifest(config_name))
+      def_file = self.msvs_settings.GetDefFile(self.GypPathToNinja)
+      if def_file:
+        implicit_deps.add(def_file)
+    else:
+      # Respect environment variables related to build, but target-specific
+      # flags can still override them.
+      ldflags = env_ldflags + config.get('ldflags', [])
+      if is_executable and len(solibs):
+        rpath = 'lib/'
+        if self.toolset != 'target':
+          rpath += self.toolset
+        ldflags.append('-Wl,-rpath=\$$ORIGIN/%s' % rpath)
+        ldflags.append('-Wl,-rpath-link=%s' % rpath)
+    self.WriteVariableList(ninja_file, 'ldflags',
+                           gyp.common.uniquer(map(self.ExpandSpecial, ldflags)))
+
+    library_dirs = config.get('library_dirs', [])
+    if self.flavor == 'win':
+      library_dirs = [self.msvs_settings.ConvertVSMacros(l, config_name)
+                      for l in library_dirs]
+      library_dirs = ['/LIBPATH:' + QuoteShellArgument(self.GypPathToNinja(l),
+                                                       self.flavor)
+                      for l in library_dirs]
+    else:
+      library_dirs = [QuoteShellArgument('-L' + self.GypPathToNinja(l),
+                                         self.flavor)
+                      for l in library_dirs]
+
+    libraries = gyp.common.uniquer(map(self.ExpandSpecial,
+                                       spec.get('libraries', [])))
+    if self.flavor == 'mac':
+      libraries = self.xcode_settings.AdjustLibraries(libraries, config_name)
+    elif self.flavor == 'win':
+      libraries = self.msvs_settings.AdjustLibraries(libraries)
+
+    self.WriteVariableList(ninja_file, 'libs', library_dirs + libraries)
+
+    linked_binary = output
+
+    if command in ('solink', 'solink_module'):
+      extra_bindings.append(('soname', os.path.split(output)[1]))
+      extra_bindings.append(('lib',
+                            gyp.common.EncodePOSIXShellArgument(output)))
+      if self.flavor == 'win':
+        extra_bindings.append(('binary', output))
+        if '/NOENTRY' not in ldflags:
+          self.target.import_lib = output + '.lib'
+          extra_bindings.append(('implibflag',
+                                 '/IMPLIB:%s' % self.target.import_lib))
+          pdbname = self.msvs_settings.GetPDBName(
+              config_name, self.ExpandSpecial, output + '.pdb')
+          output = [output, self.target.import_lib]
+          if pdbname:
+            output.append(pdbname)
+      elif not self.is_mac_bundle:
+        output = [output, output + '.TOC']
+      else:
+        command = command + '_notoc'
+    elif self.flavor == 'win':
+      extra_bindings.append(('binary', output))
+      pdbname = self.msvs_settings.GetPDBName(
+          config_name, self.ExpandSpecial, output + '.pdb')
+      if pdbname:
+        output = [output, pdbname]
+
+
+    if len(solibs):
+      extra_bindings.append(('solibs', gyp.common.EncodePOSIXShellList(solibs)))
+
+    ninja_file.build(output, command + command_suffix, link_deps,
+                     implicit=list(implicit_deps),
+                     variables=extra_bindings)
+    return linked_binary
+
+  def WriteTarget(self, spec, config_name, config, link_deps, compile_deps):
+    extra_link_deps = any(self.target_outputs.get(dep).Linkable()
+                          for dep in spec.get('dependencies', [])
+                          if dep in self.target_outputs)
+    if spec['type'] == 'none' or (not link_deps and not extra_link_deps):
+      # TODO(evan): don't call this function for 'none' target types, as
+      # it doesn't do anything, and we fake out a 'binary' with a stamp file.
+      self.target.binary = compile_deps
+      self.target.type = 'none'
+    elif spec['type'] == 'static_library':
+      self.target.binary = self.ComputeOutput(spec)
+      if (self.flavor not in ('mac', 'openbsd', 'win') and not
+          self.is_standalone_static_library):
+        self.ninja.build(self.target.binary, 'alink_thin', link_deps,
+                         order_only=compile_deps)
+      else:
+        variables = []
+        if self.xcode_settings:
+          libtool_flags = self.xcode_settings.GetLibtoolflags(config_name)
+          if libtool_flags:
+            variables.append(('libtool_flags', libtool_flags))
+        if self.msvs_settings:
+          libflags = self.msvs_settings.GetLibFlags(config_name,
+                                                    self.GypPathToNinja)
+          variables.append(('libflags', libflags))
+
+        if self.flavor != 'mac' or len(self.archs) == 1:
+          self.AppendPostbuildVariable(variables, spec,
+                                       self.target.binary, self.target.binary)
+          self.ninja.build(self.target.binary, 'alink', link_deps,
+                           order_only=compile_deps, variables=variables)
+        else:
+          inputs = []
+          for arch in self.archs:
+            output = self.ComputeOutput(spec, arch)
+            self.arch_subninjas[arch].build(output, 'alink', link_deps[arch],
+                                            order_only=compile_deps,
+                                            variables=variables)
+            inputs.append(output)
+          # TODO: It's not clear if libtool_flags should be passed to the alink
+          # call that combines single-arch .a files into a fat .a file.
+          self.AppendPostbuildVariable(variables, spec,
+                                       self.target.binary, self.target.binary)
+          self.ninja.build(self.target.binary, 'alink', inputs,
+                           # FIXME: test proving order_only=compile_deps isn't
+                           # needed.
+                           variables=variables)
+    else:
+      self.target.binary = self.WriteLink(spec, config_name, config, link_deps)
+    return self.target.binary
+
+  def WriteMacBundle(self, spec, mac_bundle_depends, is_empty):
+    assert self.is_mac_bundle
+    package_framework = spec['type'] in ('shared_library', 'loadable_module')
+    output = self.ComputeMacBundleOutput()
+    if is_empty:
+      output += '.stamp'
+    variables = []
+    self.AppendPostbuildVariable(variables, spec, output, self.target.binary,
+                                 is_command_start=not package_framework)
+    if package_framework and not is_empty:
+      variables.append(('version', self.xcode_settings.GetFrameworkVersion()))
+      self.ninja.build(output, 'package_framework', mac_bundle_depends,
+                       variables=variables)
+    else:
+      self.ninja.build(output, 'stamp', mac_bundle_depends,
+                       variables=variables)
+    self.target.bundle = output
+    return output
+
+  def GetSortedXcodeEnv(self, additional_settings=None):
+    """Returns the variables Xcode would set for build steps."""
+    assert self.abs_build_dir
+    abs_build_dir = self.abs_build_dir
+    return gyp.xcode_emulation.GetSortedXcodeEnv(
+        self.xcode_settings, abs_build_dir,
+        os.path.join(abs_build_dir, self.build_to_base), self.config_name,
+        additional_settings)
+
+  def GetSortedXcodePostbuildEnv(self):
+    """Returns the variables Xcode would set for postbuild steps."""
+    postbuild_settings = {}
+    # CHROMIUM_STRIP_SAVE_FILE is a chromium-specific hack.
+    # TODO(thakis): It would be nice to have some general mechanism instead.
+    strip_save_file = self.xcode_settings.GetPerTargetSetting(
+        'CHROMIUM_STRIP_SAVE_FILE')
+    if strip_save_file:
+      postbuild_settings['CHROMIUM_STRIP_SAVE_FILE'] = strip_save_file
+    return self.GetSortedXcodeEnv(additional_settings=postbuild_settings)
+
+  def AppendPostbuildVariable(self, variables, spec, output, binary,
+                              is_command_start=False):
+    """Adds a 'postbuild' variable if there is a postbuild for |output|."""
+    postbuild = self.GetPostbuildCommand(spec, output, binary, is_command_start)
+    if postbuild:
+      variables.append(('postbuilds', postbuild))
+
+  def GetPostbuildCommand(self, spec, output, output_binary, is_command_start):
+    """Returns a shell command that runs all the postbuilds, and removes
+    |output| if any of them fails. If |is_command_start| is False, then the
+    returned string will start with ' && '."""
+    if not self.xcode_settings or spec['type'] == 'none' or not output:
+      return ''
+    output = QuoteShellArgument(output, self.flavor)
+    postbuilds = gyp.xcode_emulation.GetSpecPostbuildCommands(spec, quiet=True)
+    if output_binary is not None:
+      postbuilds = self.xcode_settings.AddImplicitPostbuilds(
+          self.config_name,
+          os.path.normpath(os.path.join(self.base_to_build, output)),
+          QuoteShellArgument(
+              os.path.normpath(os.path.join(self.base_to_build, output_binary)),
+              self.flavor),
+          postbuilds, quiet=True)
+
+    if not postbuilds:
+      return ''
+    # Postbuilds expect to be run in the gyp file's directory, so insert an
+    # implicit postbuild to cd to there.
+    postbuilds.insert(0, gyp.common.EncodePOSIXShellList(
+        ['cd', self.build_to_base]))
+    env = self.ComputeExportEnvString(self.GetSortedXcodePostbuildEnv())
+    # G will be non-null if any postbuild fails. Run all postbuilds in a
+    # subshell.
+    commands = env + ' (' + \
+        ' && '.join([ninja_syntax.escape(command) for command in postbuilds])
+    command_string = (commands + '); G=$$?; '
+                      # Remove the final output if any postbuild failed.
+                      '((exit $$G) || rm -rf %s) ' % output + '&& exit $$G)')
+    if is_command_start:
+      return '(' + command_string + ' && '
+    else:
+      return '$ && (' + command_string
+
+  def ComputeExportEnvString(self, env):
+    """Given an environment, returns a string looking like
+        'export FOO=foo; export BAR="${FOO} bar;'
+    that exports |env| to the shell."""
+    export_str = []
+    for k, v in env:
+      export_str.append('export %s=%s;' %
+          (k, ninja_syntax.escape(gyp.common.EncodePOSIXShellArgument(v))))
+    return ' '.join(export_str)
+
+  def ComputeMacBundleOutput(self):
+    """Return the 'output' (full output path) to a bundle output directory."""
+    assert self.is_mac_bundle
+    path = generator_default_variables['PRODUCT_DIR']
+    return self.ExpandSpecial(
+        os.path.join(path, self.xcode_settings.GetWrapperName()))
+
+  def ComputeOutputFileName(self, spec, type=None):
+    """Compute the filename of the final output for the current target."""
+    if not type:
+      type = spec['type']
+
+    default_variables = copy.copy(generator_default_variables)
+    CalculateVariables(default_variables, {'flavor': self.flavor})
+
+    # Compute filename prefix: the product prefix, or a default for
+    # the product type.
+    DEFAULT_PREFIX = {
+      'loadable_module': default_variables['SHARED_LIB_PREFIX'],
+      'shared_library': default_variables['SHARED_LIB_PREFIX'],
+      'static_library': default_variables['STATIC_LIB_PREFIX'],
+      'executable': default_variables['EXECUTABLE_PREFIX'],
+      }
+    prefix = spec.get('product_prefix', DEFAULT_PREFIX.get(type, ''))
+
+    # Compute filename extension: the product extension, or a default
+    # for the product type.
+    DEFAULT_EXTENSION = {
+        'loadable_module': default_variables['SHARED_LIB_SUFFIX'],
+        'shared_library': default_variables['SHARED_LIB_SUFFIX'],
+        'static_library': default_variables['STATIC_LIB_SUFFIX'],
+        'executable': default_variables['EXECUTABLE_SUFFIX'],
+      }
+    extension = spec.get('product_extension')
+    if extension:
+      extension = '.' + extension
+    else:
+      extension = DEFAULT_EXTENSION.get(type, '')
+
+    if 'product_name' in spec:
+      # If we were given an explicit name, use that.
+      target = spec['product_name']
+    else:
+      # Otherwise, derive a name from the target name.
+      target = spec['target_name']
+      if prefix == 'lib':
+        # Snip out an extra 'lib' from libs if appropriate.
+        target = StripPrefix(target, 'lib')
+
+    if type in ('static_library', 'loadable_module', 'shared_library',
+                        'executable'):
+      return '%s%s%s' % (prefix, target, extension)
+    elif type == 'none':
+      return '%s.stamp' % target
+    else:
+      raise Exception('Unhandled output type %s' % type)
+
+  def ComputeOutput(self, spec, arch=None):
+    """Compute the path for the final output of the spec."""
+    type = spec['type']
+
+    if self.flavor == 'win':
+      override = self.msvs_settings.GetOutputName(self.config_name,
+                                                  self.ExpandSpecial)
+      if override:
+        return override
+
+    if arch is None and self.flavor == 'mac' and type in (
+        'static_library', 'executable', 'shared_library', 'loadable_module'):
+      filename = self.xcode_settings.GetExecutablePath()
+    else:
+      filename = self.ComputeOutputFileName(spec, type)
+
+    if arch is None and 'product_dir' in spec:
+      path = os.path.join(spec['product_dir'], filename)
+      return self.ExpandSpecial(path)
+
+    # Some products go into the output root, libraries go into shared library
+    # dir, and everything else goes into the normal place.
+    type_in_output_root = ['executable', 'loadable_module']
+    if self.flavor == 'mac' and self.toolset == 'target':
+      type_in_output_root += ['shared_library', 'static_library']
+    elif self.flavor == 'win' and self.toolset == 'target':
+      type_in_output_root += ['shared_library']
+
+    if arch is not None:
+      # Make sure partial executables don't end up in a bundle or the regular
+      # output directory.
+      archdir = 'arch'
+      if self.toolset != 'target':
+        archdir = os.path.join('arch', '%s' % self.toolset)
+      return os.path.join(archdir, AddArch(filename, arch))
+    elif type in type_in_output_root or self.is_standalone_static_library:
+      return filename
+    elif type == 'shared_library':
+      libdir = 'lib'
+      if self.toolset != 'target':
+        libdir = os.path.join('lib', '%s' % self.toolset)
+      return os.path.join(libdir, filename)
+    else:
+      return self.GypPathToUniqueOutput(filename, qualified=False)
+
+  def WriteVariableList(self, ninja_file, var, values):
+    assert not isinstance(values, str)
+    if values is None:
+      values = []
+    ninja_file.variable(var, ' '.join(values))
+
+  def WriteNewNinjaRule(self, name, args, description, is_cygwin, env):
+    """Write out a new ninja "rule" statement for a given command.
+
+    Returns the name of the new rule, and a copy of |args| with variables
+    expanded."""
+
+    if self.flavor == 'win':
+      args = [self.msvs_settings.ConvertVSMacros(
+                  arg, self.base_to_build, config=self.config_name)
+              for arg in args]
+      description = self.msvs_settings.ConvertVSMacros(
+          description, config=self.config_name)
+    elif self.flavor == 'mac':
+      # |env| is an empty list on non-mac.
+      args = [gyp.xcode_emulation.ExpandEnvVars(arg, env) for arg in args]
+      description = gyp.xcode_emulation.ExpandEnvVars(description, env)
+
+    # TODO: we shouldn't need to qualify names; we do it because
+    # currently the ninja rule namespace is global, but it really
+    # should be scoped to the subninja.
+    rule_name = self.name
+    if self.toolset == 'target':
+      rule_name += '.' + self.toolset
+    rule_name += '.' + name
+    rule_name = re.sub('[^a-zA-Z0-9_]', '_', rule_name)
+
+    # Remove variable references, but not if they refer to the magic rule
+    # variables.  This is not quite right, as it also protects these for
+    # actions, not just for rules where they are valid. Good enough.
+    protect = [ '${root}', '${dirname}', '${source}', '${ext}', '${name}' ]
+    protect = '(?!' + '|'.join(map(re.escape, protect)) + ')'
+    description = re.sub(protect + r'\$', '_', description)
+
+    # gyp dictates that commands are run from the base directory.
+    # cd into the directory before running, and adjust paths in
+    # the arguments to point to the proper locations.
+    rspfile = None
+    rspfile_content = None
+    args = [self.ExpandSpecial(arg, self.base_to_build) for arg in args]
+    if self.flavor == 'win':
+      rspfile = rule_name + '.$unique_name.rsp'
+      # The cygwin case handles this inside the bash sub-shell.
+      run_in = '' if is_cygwin else ' ' + self.build_to_base
+      if is_cygwin:
+        rspfile_content = self.msvs_settings.BuildCygwinBashCommandLine(
+            args, self.build_to_base)
+      else:
+        rspfile_content = gyp.msvs_emulation.EncodeRspFileList(args)
+      command = ('%s gyp-win-tool action-wrapper $arch ' % sys.executable +
+                 rspfile + run_in)
+    else:
+      env = self.ComputeExportEnvString(env)
+      command = gyp.common.EncodePOSIXShellList(args)
+      command = 'cd %s; ' % self.build_to_base + env + command
+
+    # GYP rules/actions express being no-ops by not touching their outputs.
+    # Avoid executing downstream dependencies in this case by specifying
+    # restat=1 to ninja.
+    self.ninja.rule(rule_name, command, description, restat=True,
+                    rspfile=rspfile, rspfile_content=rspfile_content)
+    self.ninja.newline()
+
+    return rule_name, args
+
+
+def CalculateVariables(default_variables, params):
+  """Calculate additional variables for use in the build (called by gyp)."""
+  global generator_additional_non_configuration_keys
+  global generator_additional_path_sections
+  flavor = gyp.common.GetFlavor(params)
+  if flavor == 'mac':
+    default_variables.setdefault('OS', 'mac')
+    default_variables.setdefault('SHARED_LIB_SUFFIX', '.dylib')
+    default_variables.setdefault('SHARED_LIB_DIR',
+                                 generator_default_variables['PRODUCT_DIR'])
+    default_variables.setdefault('LIB_DIR',
+                                 generator_default_variables['PRODUCT_DIR'])
+
+    # Copy additional generator configuration data from Xcode, which is shared
+    # by the Mac Ninja generator.
+    import gyp.generator.xcode as xcode_generator
+    generator_additional_non_configuration_keys = getattr(xcode_generator,
+        'generator_additional_non_configuration_keys', [])
+    generator_additional_path_sections = getattr(xcode_generator,
+        'generator_additional_path_sections', [])
+    global generator_extra_sources_for_rules
+    generator_extra_sources_for_rules = getattr(xcode_generator,
+        'generator_extra_sources_for_rules', [])
+  elif flavor == 'win':
+    default_variables.setdefault('OS', 'win')
+    default_variables['EXECUTABLE_SUFFIX'] = '.exe'
+    default_variables['STATIC_LIB_PREFIX'] = ''
+    default_variables['STATIC_LIB_SUFFIX'] = '.lib'
+    default_variables['SHARED_LIB_PREFIX'] = ''
+    default_variables['SHARED_LIB_SUFFIX'] = '.dll'
+
+    # Copy additional generator configuration data from VS, which is shared
+    # by the Windows Ninja generator.
+    import gyp.generator.msvs as msvs_generator
+    generator_additional_non_configuration_keys = getattr(msvs_generator,
+        'generator_additional_non_configuration_keys', [])
+    generator_additional_path_sections = getattr(msvs_generator,
+        'generator_additional_path_sections', [])
+
+    gyp.msvs_emulation.CalculateCommonVariables(default_variables, params)
+  else:
+    operating_system = flavor
+    if flavor == 'android':
+      operating_system = 'linux'  # Keep this legacy behavior for now.
+    default_variables.setdefault('OS', operating_system)
+    default_variables.setdefault('SHARED_LIB_SUFFIX', '.so')
+    default_variables.setdefault('SHARED_LIB_DIR',
+                                 os.path.join('$!PRODUCT_DIR', 'lib'))
+    default_variables.setdefault('LIB_DIR',
+                                 os.path.join('$!PRODUCT_DIR', 'obj'))
+
+def ComputeOutputDir(params):
+  """Returns the path from the toplevel_dir to the build output directory."""
+  # generator_dir: relative path from pwd to where make puts build files.
+  # Makes migrating from make to ninja easier, ninja doesn't put anything here.
+  generator_dir = os.path.relpath(params['options'].generator_output or '.')
+
+  # output_dir: relative path from generator_dir to the build directory.
+  output_dir = params.get('generator_flags', {}).get('output_dir', 'out')
+
+  # Relative path from source root to our output files.  e.g. "out"
+  return os.path.normpath(os.path.join(generator_dir, output_dir))
+
+
+def CalculateGeneratorInputInfo(params):
+  """Called by __init__ to initialize generator values based on params."""
+  # E.g. "out/gypfiles"
+  toplevel = params['options'].toplevel_dir
+  qualified_out_dir = os.path.normpath(os.path.join(
+      toplevel, ComputeOutputDir(params), 'gypfiles'))
+
+  global generator_filelist_paths
+  generator_filelist_paths = {
+      'toplevel': toplevel,
+      'qualified_out_dir': qualified_out_dir,
+  }
+
+
+def OpenOutput(path, mode='w'):
+  """Open |path| for writing, creating directories if necessary."""
+  gyp.common.EnsureDirExists(path)
+  return open(path, mode)
+
+
+def CommandWithWrapper(cmd, wrappers, prog):
+  wrapper = wrappers.get(cmd, '')
+  if wrapper:
+    return wrapper + ' ' + prog
+  return prog
+
+
+def GetDefaultConcurrentLinks():
+  """Returns a best-guess for a number of concurrent links."""
+  if sys.platform in ('win32', 'cygwin'):
+    import ctypes
+
+    class MEMORYSTATUSEX(ctypes.Structure):
+      _fields_ = [
+        ("dwLength", ctypes.c_ulong),
+        ("dwMemoryLoad", ctypes.c_ulong),
+        ("ullTotalPhys", ctypes.c_ulonglong),
+        ("ullAvailPhys", ctypes.c_ulonglong),
+        ("ullTotalPageFile", ctypes.c_ulonglong),
+        ("ullAvailPageFile", ctypes.c_ulonglong),
+        ("ullTotalVirtual", ctypes.c_ulonglong),
+        ("ullAvailVirtual", ctypes.c_ulonglong),
+        ("sullAvailExtendedVirtual", ctypes.c_ulonglong),
+      ]
+
+    stat = MEMORYSTATUSEX()
+    stat.dwLength = ctypes.sizeof(stat)
+    ctypes.windll.kernel32.GlobalMemoryStatusEx(ctypes.byref(stat))
+
+    mem_limit = max(1, stat.ullTotalPhys / (4 * (2 ** 30)))  # total / 4GB
+    hard_cap = max(1, int(os.getenv('GYP_LINK_CONCURRENCY_MAX', 2**32)))
+    return min(mem_limit, hard_cap)
+  elif sys.platform.startswith('linux'):
+    with open("/proc/meminfo") as meminfo:
+      memtotal_re = re.compile(r'^MemTotal:\s*(\d*)\s*kB')
+      for line in meminfo:
+        match = memtotal_re.match(line)
+        if not match:
+          continue
+        # Allow 8Gb per link on Linux because Gold is quite memory hungry
+        return max(1, int(match.group(1)) / (8 * (2 ** 20)))
+    return 1
+  elif sys.platform == 'darwin':
+    try:
+      avail_bytes = int(subprocess.check_output(['sysctl', '-n', 'hw.memsize']))
+      # A static library debug build of Chromium's unit_tests takes ~2.7GB, so
+      # 4GB per ld process allows for some more bloat.
+      return max(1, avail_bytes / (4 * (2 ** 30)))  # total / 4GB
+    except:
+      return 1
+  else:
+    # TODO(scottmg): Implement this for other platforms.
+    return 1
+
+
+def _GetWinLinkRuleNameSuffix(embed_manifest):
+  """Returns the suffix used to select an appropriate linking rule depending on
+  whether the manifest embedding is enabled."""
+  return '_embed' if embed_manifest else ''
+
+
+def _AddWinLinkRules(master_ninja, embed_manifest):
+  """Adds link rules for Windows platform to |master_ninja|."""
+  def FullLinkCommand(ldcmd, out, binary_type):
+    resource_name = {
+      'exe': '1',
+      'dll': '2',
+    }[binary_type]
+    return '%(python)s gyp-win-tool link-with-manifests $arch %(embed)s ' \
+           '%(out)s "%(ldcmd)s" %(resname)s $mt $rc "$intermediatemanifest" ' \
+           '$manifests' % {
+               'python': sys.executable,
+               'out': out,
+               'ldcmd': ldcmd,
+               'resname': resource_name,
+               'embed': embed_manifest }
+  rule_name_suffix = _GetWinLinkRuleNameSuffix(embed_manifest)
+  use_separate_mspdbsrv = (
+      int(os.environ.get('GYP_USE_SEPARATE_MSPDBSRV', '0')) != 0)
+  dlldesc = 'LINK%s(DLL) $binary' % rule_name_suffix.upper()
+  dllcmd = ('%s gyp-win-tool link-wrapper $arch %s '
+            '$ld /nologo $implibflag /DLL /OUT:$binary '
+            '@$binary.rsp' % (sys.executable, use_separate_mspdbsrv))
+  dllcmd = FullLinkCommand(dllcmd, '$binary', 'dll')
+  master_ninja.rule('solink' + rule_name_suffix,
+                    description=dlldesc, command=dllcmd,
+                    rspfile='$binary.rsp',
+                    rspfile_content='$libs $in_newline $ldflags',
+                    restat=True,
+                    pool='link_pool')
+  master_ninja.rule('solink_module' + rule_name_suffix,
+                    description=dlldesc, command=dllcmd,
+                    rspfile='$binary.rsp',
+                    rspfile_content='$libs $in_newline $ldflags',
+                    restat=True,
+                    pool='link_pool')
+  # Note that ldflags goes at the end so that it has the option of
+  # overriding default settings earlier in the command line.
+  exe_cmd = ('%s gyp-win-tool link-wrapper $arch %s '
+             '$ld /nologo /OUT:$binary @$binary.rsp' %
+              (sys.executable, use_separate_mspdbsrv))
+  exe_cmd = FullLinkCommand(exe_cmd, '$binary', 'exe')
+  master_ninja.rule('link' + rule_name_suffix,
+                    description='LINK%s $binary' % rule_name_suffix.upper(),
+                    command=exe_cmd,
+                    rspfile='$binary.rsp',
+                    rspfile_content='$in_newline $libs $ldflags',
+                    pool='link_pool')
+
+
+def GenerateOutputForConfig(target_list, target_dicts, data, params,
+                            config_name):
+  options = params['options']
+  flavor = gyp.common.GetFlavor(params)
+  generator_flags = params.get('generator_flags', {})
+
+  # build_dir: relative path from source root to our output files.
+  # e.g. "out/Debug"
+  build_dir = os.path.normpath(
+      os.path.join(ComputeOutputDir(params), config_name))
+
+  toplevel_build = os.path.join(options.toplevel_dir, build_dir)
+
+  master_ninja_file = OpenOutput(os.path.join(toplevel_build, 'build.ninja'))
+  master_ninja = ninja_syntax.Writer(master_ninja_file, width=120)
+
+  # Put build-time support tools in out/{config_name}.
+  gyp.common.CopyTool(flavor, toplevel_build)
+
+  # Grab make settings for CC/CXX.
+  # The rules are
+  # - The priority from low to high is gcc/g++, the 'make_global_settings' in
+  #   gyp, the environment variable.
+  # - If there is no 'make_global_settings' for CC.host/CXX.host or
+  #   'CC_host'/'CXX_host' enviroment variable, cc_host/cxx_host should be set
+  #   to cc/cxx.
+  if flavor == 'win':
+    # Overridden by local arch choice in the use_deps case.
+    # Chromium's ffmpeg c99conv.py currently looks for a 'cc =' line in
+    # build.ninja so needs something valid here. http://crbug.com/233985
+    cc = 'cl.exe'
+    cxx = 'cl.exe'
+    ld = 'link.exe'
+    ld_host = '$ld'
+  else:
+    cc = 'cc'
+    cxx = 'c++'
+    ld = '$cc'
+    ldxx = '$cxx'
+    ld_host = '$cc_host'
+    ldxx_host = '$cxx_host'
+
+  cc_host = None
+  cxx_host = None
+  cc_host_global_setting = None
+  cxx_host_global_setting = None
+  clang_cl = None
+
+  build_file, _, _ = gyp.common.ParseQualifiedTarget(target_list[0])
+  make_global_settings = data[build_file].get('make_global_settings', [])
+  build_to_root = gyp.common.InvertRelativePath(build_dir,
+                                                options.toplevel_dir)
+  wrappers = {}
+  for key, value in make_global_settings:
+    if key == 'CC':
+      cc = os.path.join(build_to_root, value)
+      if cc.endswith('clang-cl'):
+        clang_cl = cc
+    if key == 'CXX':
+      cxx = os.path.join(build_to_root, value)
+    if key == 'CC.host':
+      cc_host = os.path.join(build_to_root, value)
+      cc_host_global_setting = value
+    if key == 'CXX.host':
+      cxx_host = os.path.join(build_to_root, value)
+      cxx_host_global_setting = value
+    if key.endswith('_wrapper'):
+      wrappers[key[:-len('_wrapper')]] = os.path.join(build_to_root, value)
+
+  # Support wrappers from environment variables too.
+  for key, value in os.environ.iteritems():
+    if key.lower().endswith('_wrapper'):
+      key_prefix = key[:-len('_wrapper')]
+      key_prefix = re.sub(r'\.HOST$', '.host', key_prefix)
+      wrappers[key_prefix] = os.path.join(build_to_root, value)
+
+  if flavor == 'win':
+    cl_paths = gyp.msvs_emulation.GenerateEnvironmentFiles(
+        toplevel_build, generator_flags, OpenOutput)
+    for arch, path in cl_paths.iteritems():
+      if clang_cl:
+        # If we have selected clang-cl, use that instead.
+        path = clang_cl
+      command = CommandWithWrapper('CC', wrappers,
+          QuoteShellArgument(path, 'win'))
+      if clang_cl:
+        # Use clang-cl to cross-compile for x86 or x86_64.
+        command += (' -m32' if arch == 'x86' else ' -m64')
+      master_ninja.variable('cl_' + arch, command)
+
+  cc = GetEnvironFallback(['CC_target', 'CC'], cc)
+  master_ninja.variable('cc', CommandWithWrapper('CC', wrappers, cc))
+  cxx = GetEnvironFallback(['CXX_target', 'CXX'], cxx)
+  master_ninja.variable('cxx', CommandWithWrapper('CXX', wrappers, cxx))
+
+  if flavor == 'win':
+    master_ninja.variable('ld', ld)
+    master_ninja.variable('idl', 'midl.exe')
+    master_ninja.variable('ar', 'lib.exe')
+    master_ninja.variable('rc', 'rc.exe')
+    master_ninja.variable('asm', 'ml.exe')
+    master_ninja.variable('mt', 'mt.exe')
+  else:
+    master_ninja.variable('ld', CommandWithWrapper('LINK', wrappers, ld))
+    master_ninja.variable('ldxx', CommandWithWrapper('LINK', wrappers, ldxx))
+    master_ninja.variable('ar', GetEnvironFallback(['AR_target', 'AR'], 'ar'))
+
+  if generator_supports_multiple_toolsets:
+    if not cc_host:
+      cc_host = cc
+    if not cxx_host:
+      cxx_host = cxx
+
+    master_ninja.variable('ar_host', GetEnvironFallback(['AR_host'], 'ar'))
+    cc_host = GetEnvironFallback(['CC_host'], cc_host)
+    cxx_host = GetEnvironFallback(['CXX_host'], cxx_host)
+
+    # The environment variable could be used in 'make_global_settings', like
+    # ['CC.host', '$(CC)'] or ['CXX.host', '$(CXX)'], transform them here.
+    if '$(CC)' in cc_host and cc_host_global_setting:
+      cc_host = cc_host_global_setting.replace('$(CC)', cc)
+    if '$(CXX)' in cxx_host and cxx_host_global_setting:
+      cxx_host = cxx_host_global_setting.replace('$(CXX)', cxx)
+    master_ninja.variable('cc_host',
+                          CommandWithWrapper('CC.host', wrappers, cc_host))
+    master_ninja.variable('cxx_host',
+                          CommandWithWrapper('CXX.host', wrappers, cxx_host))
+    if flavor == 'win':
+      master_ninja.variable('ld_host', ld_host)
+    else:
+      master_ninja.variable('ld_host', CommandWithWrapper(
+          'LINK', wrappers, ld_host))
+      master_ninja.variable('ldxx_host', CommandWithWrapper(
+          'LINK', wrappers, ldxx_host))
+
+  master_ninja.newline()
+
+  master_ninja.pool('link_pool', depth=GetDefaultConcurrentLinks())
+  master_ninja.newline()
+
+  deps = 'msvc' if flavor == 'win' else 'gcc'
+
+  if flavor != 'win':
+    master_ninja.rule(
+      'cc',
+      description='CC $out',
+      command=('$cc -MMD -MF $out.d $defines $includes $cflags $cflags_c '
+              '$cflags_pch_c -c $in -o $out'),
+      depfile='$out.d',
+      deps=deps)
+    master_ninja.rule(
+      'cc_s',
+      description='CC $out',
+      command=('$cc $defines $includes $cflags $cflags_c '
+              '$cflags_pch_c -c $in -o $out'))
+    master_ninja.rule(
+      'cxx',
+      description='CXX $out',
+      command=('$cxx -MMD -MF $out.d $defines $includes $cflags $cflags_cc '
+              '$cflags_pch_cc -c $in -o $out'),
+      depfile='$out.d',
+      deps=deps)
+  else:
+    # TODO(scottmg) Separate pdb names is a test to see if it works around
+    # http://crbug.com/142362. It seems there's a race between the creation of
+    # the .pdb by the precompiled header step for .cc and the compilation of
+    # .c files. This should be handled by mspdbsrv, but rarely errors out with
+    #   c1xx : fatal error C1033: cannot open program database
+    # By making the rules target separate pdb files this might be avoided.
+    cc_command = ('ninja -t msvc -e $arch ' +
+                  '-- '
+                  '$cc /nologo /showIncludes /FC '
+                  '@$out.rsp /c $in /Fo$out /Fd$pdbname_c ')
+    cxx_command = ('ninja -t msvc -e $arch ' +
+                   '-- '
+                   '$cxx /nologo /showIncludes /FC '
+                   '@$out.rsp /c $in /Fo$out /Fd$pdbname_cc ')
+    master_ninja.rule(
+      'cc',
+      description='CC $out',
+      command=cc_command,
+      rspfile='$out.rsp',
+      rspfile_content='$defines $includes $cflags $cflags_c',
+      deps=deps)
+    master_ninja.rule(
+      'cxx',
+      description='CXX $out',
+      command=cxx_command,
+      rspfile='$out.rsp',
+      rspfile_content='$defines $includes $cflags $cflags_cc',
+      deps=deps)
+    master_ninja.rule(
+      'idl',
+      description='IDL $in',
+      command=('%s gyp-win-tool midl-wrapper $arch $outdir '
+               '$tlb $h $dlldata $iid $proxy $in '
+               '$idlflags' % sys.executable))
+    master_ninja.rule(
+      'rc',
+      description='RC $in',
+      # Note: $in must be last otherwise rc.exe complains.
+      command=('%s gyp-win-tool rc-wrapper '
+               '$arch $rc $defines $resource_includes $rcflags /fo$out $in' %
+               sys.executable))
+    master_ninja.rule(
+      'asm',
+      description='ASM $in',
+      command=('%s gyp-win-tool asm-wrapper '
+               '$arch $asm $defines $includes /c /Fo $out $in' %
+               sys.executable))
+
+  if flavor != 'mac' and flavor != 'win':
+    master_ninja.rule(
+      'alink',
+      description='AR $out',
+      command='rm -f $out && $ar rcs $out $in')
+    master_ninja.rule(
+      'alink_thin',
+      description='AR $out',
+      command='rm -f $out && $ar rcsT $out $in')
+
+    # This allows targets that only need to depend on $lib's API to declare an
+    # order-only dependency on $lib.TOC and avoid relinking such downstream
+    # dependencies when $lib changes only in non-public ways.
+    # The resulting string leaves an uninterpolated %{suffix} which
+    # is used in the final substitution below.
+    mtime_preserving_solink_base = (
+        'if [ ! -e $lib -o ! -e ${lib}.TOC ]; then '
+        '%(solink)s && %(extract_toc)s > ${lib}.TOC; else '
+        '%(solink)s && %(extract_toc)s > ${lib}.tmp && '
+        'if ! cmp -s ${lib}.tmp ${lib}.TOC; then mv ${lib}.tmp ${lib}.TOC ; '
+        'fi; fi'
+        % { 'solink':
+              '$ld -shared $ldflags -o $lib -Wl,-soname=$soname %(suffix)s',
+            'extract_toc':
+              ('{ readelf -d ${lib} | grep SONAME ; '
+               'nm -gD -f p ${lib} | cut -f1-2 -d\' \'; }')})
+
+    master_ninja.rule(
+      'solink',
+      description='SOLINK $lib',
+      restat=True,
+      command=(mtime_preserving_solink_base % {
+          'suffix': '-Wl,--whole-archive $in $solibs -Wl,--no-whole-archive '
+          '$libs'}),
+      pool='link_pool')
+    master_ninja.rule(
+      'solink_module',
+      description='SOLINK(module) $lib',
+      restat=True,
+      command=(mtime_preserving_solink_base % {
+          'suffix': '-Wl,--start-group $in $solibs -Wl,--end-group '
+          '$libs'}),
+      pool='link_pool')
+    master_ninja.rule(
+      'link',
+      description='LINK $out',
+      command=('$ld $ldflags -o $out '
+               '-Wl,--start-group $in $solibs -Wl,--end-group $libs'),
+      pool='link_pool')
+  elif flavor == 'win':
+    master_ninja.rule(
+        'alink',
+        description='LIB $out',
+        command=('%s gyp-win-tool link-wrapper $arch False '
+                 '$ar /nologo /ignore:4221 /OUT:$out @$out.rsp' %
+                 sys.executable),
+        rspfile='$out.rsp',
+        rspfile_content='$in_newline $libflags')
+    _AddWinLinkRules(master_ninja, embed_manifest=True)
+    _AddWinLinkRules(master_ninja, embed_manifest=False)
+  else:
+    master_ninja.rule(
+      'objc',
+      description='OBJC $out',
+      command=('$cc -MMD -MF $out.d $defines $includes $cflags $cflags_objc '
+               '$cflags_pch_objc -c $in -o $out'),
+      depfile='$out.d',
+      deps=deps)
+    master_ninja.rule(
+      'objcxx',
+      description='OBJCXX $out',
+      command=('$cxx -MMD -MF $out.d $defines $includes $cflags $cflags_objcc '
+               '$cflags_pch_objcc -c $in -o $out'),
+      depfile='$out.d',
+      deps=deps)
+    master_ninja.rule(
+      'alink',
+      description='LIBTOOL-STATIC $out, POSTBUILDS',
+      command='rm -f $out && '
+              './gyp-mac-tool filter-libtool libtool $libtool_flags '
+              '-static -o $out $in'
+              '$postbuilds')
+    master_ninja.rule(
+      'lipo',
+      description='LIPO $out, POSTBUILDS',
+      command='rm -f $out && lipo -create $in -output $out$postbuilds')
+
+    # Record the public interface of $lib in $lib.TOC. See the corresponding
+    # comment in the posix section above for details.
+    solink_base = '$ld %(type)s $ldflags -o $lib %(suffix)s'
+    mtime_preserving_solink_base = (
+        'if [ ! -e $lib -o ! -e ${lib}.TOC ] || '
+             # Always force dependent targets to relink if this library
+             # reexports something. Handling this correctly would require
+             # recursive TOC dumping but this is rare in practice, so punt.
+             'otool -l $lib | grep -q LC_REEXPORT_DYLIB ; then '
+          '%(solink)s && %(extract_toc)s > ${lib}.TOC; '
+        'else '
+          '%(solink)s && %(extract_toc)s > ${lib}.tmp && '
+          'if ! cmp -s ${lib}.tmp ${lib}.TOC; then '
+            'mv ${lib}.tmp ${lib}.TOC ; '
+          'fi; '
+        'fi'
+        % { 'solink': solink_base,
+            'extract_toc':
+              '{ otool -l $lib | grep LC_ID_DYLIB -A 5; '
+              'nm -gP $lib | cut -f1-2 -d\' \' | grep -v U$$; true; }'})
+
+    solink_suffix = '$in $solibs $libs$postbuilds'
+    master_ninja.rule(
+      'solink',
+      description='SOLINK $lib, POSTBUILDS',
+      restat=True,
+      command=mtime_preserving_solink_base % {'suffix': solink_suffix,
+                                              'type': '-shared'},
+      pool='link_pool')
+    master_ninja.rule(
+      'solink_notoc',
+      description='SOLINK $lib, POSTBUILDS',
+      restat=True,
+      command=solink_base % {'suffix':solink_suffix, 'type': '-shared'},
+      pool='link_pool')
+
+    solink_module_suffix = '$in $solibs $libs$postbuilds'
+    master_ninja.rule(
+      'solink_module',
+      description='SOLINK(module) $lib, POSTBUILDS',
+      restat=True,
+      command=mtime_preserving_solink_base % {'suffix': solink_module_suffix,
+                                              'type': '-bundle'},
+      pool='link_pool')
+    master_ninja.rule(
+      'solink_module_notoc',
+      description='SOLINK(module) $lib, POSTBUILDS',
+      restat=True,
+      command=solink_base % {'suffix': solink_module_suffix, 'type': '-bundle'},
+      pool='link_pool')
+
+    master_ninja.rule(
+      'link',
+      description='LINK $out, POSTBUILDS',
+      command=('$ld $ldflags -o $out '
+               '$in $solibs $libs$postbuilds'),
+      pool='link_pool')
+    master_ninja.rule(
+      'preprocess_infoplist',
+      description='PREPROCESS INFOPLIST $out',
+      command=('$cc -E -P -Wno-trigraphs -x c $defines $in -o $out && '
+               'plutil -convert xml1 $out $out'))
+    master_ninja.rule(
+      'copy_infoplist',
+      description='COPY INFOPLIST $in',
+      command='$env ./gyp-mac-tool copy-info-plist $in $out $keys')
+    master_ninja.rule(
+      'mac_tool',
+      description='MACTOOL $mactool_cmd $in',
+      command='$env ./gyp-mac-tool $mactool_cmd $in $out')
+    master_ninja.rule(
+      'package_framework',
+      description='PACKAGE FRAMEWORK $out, POSTBUILDS',
+      command='./gyp-mac-tool package-framework $out $version$postbuilds '
+              '&& touch $out')
+  if flavor == 'win':
+    master_ninja.rule(
+      'stamp',
+      description='STAMP $out',
+      command='%s gyp-win-tool stamp $out' % sys.executable)
+    master_ninja.rule(
+      'copy',
+      description='COPY $in $out',
+      command='%s gyp-win-tool recursive-mirror $in $out' % sys.executable)
+  else:
+    master_ninja.rule(
+      'stamp',
+      description='STAMP $out',
+      command='${postbuilds}touch $out')
+    master_ninja.rule(
+      'copy',
+      description='COPY $in $out',
+      command='ln -f $in $out 2>/dev/null || (rm -rf $out && cp -af $in $out)')
+  master_ninja.newline()
+
+  all_targets = set()
+  for build_file in params['build_files']:
+    for target in gyp.common.AllTargets(target_list,
+                                        target_dicts,
+                                        os.path.normpath(build_file)):
+      all_targets.add(target)
+  all_outputs = set()
+
+  # target_outputs is a map from qualified target name to a Target object.
+  target_outputs = {}
+  # target_short_names is a map from target short name to a list of Target
+  # objects.
+  target_short_names = {}
+
+  for qualified_target in target_list:
+    # qualified_target is like: third_party/icu/icu.gyp:icui18n#target
+    build_file, name, toolset = \
+        gyp.common.ParseQualifiedTarget(qualified_target)
+
+    this_make_global_settings = data[build_file].get('make_global_settings', [])
+    assert make_global_settings == this_make_global_settings, (
+        "make_global_settings needs to be the same for all targets. %s vs. %s" %
+        (this_make_global_settings, make_global_settings))
+
+    spec = target_dicts[qualified_target]
+    if flavor == 'mac':
+      gyp.xcode_emulation.MergeGlobalXcodeSettingsToSpec(data[build_file], spec)
+
+    build_file = gyp.common.RelativePath(build_file, options.toplevel_dir)
+
+    base_path = os.path.dirname(build_file)
+    obj = 'obj'
+    if toolset != 'target':
+      obj += '.' + toolset
+    output_file = os.path.join(obj, base_path, name + '.ninja')
+
+    ninja_output = StringIO()
+    writer = NinjaWriter(qualified_target, target_outputs, base_path, build_dir,
+                         ninja_output,
+                         toplevel_build, output_file,
+                         flavor, toplevel_dir=options.toplevel_dir)
+
+    target = writer.WriteSpec(spec, config_name, generator_flags)
+
+    if ninja_output.tell() > 0:
+      # Only create files for ninja files that actually have contents.
+      with OpenOutput(os.path.join(toplevel_build, output_file)) as ninja_file:
+        ninja_file.write(ninja_output.getvalue())
+      ninja_output.close()
+      master_ninja.subninja(output_file)
+
+    if target:
+      if name != target.FinalOutput() and spec['toolset'] == 'target':
+        target_short_names.setdefault(name, []).append(target)
+      target_outputs[qualified_target] = target
+      if qualified_target in all_targets:
+        all_outputs.add(target.FinalOutput())
+
+  if target_short_names:
+    # Write a short name to build this target.  This benefits both the
+    # "build chrome" case as well as the gyp tests, which expect to be
+    # able to run actions and build libraries by their short name.
+    master_ninja.newline()
+    master_ninja.comment('Short names for targets.')
+    for short_name in target_short_names:
+      master_ninja.build(short_name, 'phony', [x.FinalOutput() for x in
+                                               target_short_names[short_name]])
+
+  if all_outputs:
+    master_ninja.newline()
+    master_ninja.build('all', 'phony', list(all_outputs))
+    master_ninja.default(generator_flags.get('default_target', 'all'))
+
+  master_ninja_file.close()
+
+
+def PerformBuild(data, configurations, params):
+  options = params['options']
+  for config in configurations:
+    builddir = os.path.join(options.toplevel_dir, 'out', config)
+    arguments = ['ninja', '-C', builddir]
+    print 'Building [%s]: %s' % (config, arguments)
+    subprocess.check_call(arguments)
+
+
+def CallGenerateOutputForConfig(arglist):
+  # Ignore the interrupt signal so that the parent process catches it and
+  # kills all multiprocessing children.
+  signal.signal(signal.SIGINT, signal.SIG_IGN)
+
+  (target_list, target_dicts, data, params, config_name) = arglist
+  GenerateOutputForConfig(target_list, target_dicts, data, params, config_name)
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  # Update target_dicts for iOS device builds.
+  target_dicts = gyp.xcode_emulation.CloneConfigurationForDeviceAndEmulator(
+      target_dicts)
+
+  user_config = params.get('generator_flags', {}).get('config', None)
+  if gyp.common.GetFlavor(params) == 'win':
+    target_list, target_dicts = MSVSUtil.ShardTargets(target_list, target_dicts)
+    target_list, target_dicts = MSVSUtil.InsertLargePdbShims(
+        target_list, target_dicts, generator_default_variables)
+
+  if user_config:
+    GenerateOutputForConfig(target_list, target_dicts, data, params,
+                            user_config)
+  else:
+    config_names = target_dicts[target_list[0]]['configurations'].keys()
+    if params['parallel']:
+      try:
+        pool = multiprocessing.Pool(len(config_names))
+        arglists = []
+        for config_name in config_names:
+          arglists.append(
+              (target_list, target_dicts, data, params, config_name))
+        pool.map(CallGenerateOutputForConfig, arglists)
+      except KeyboardInterrupt, e:
+        pool.terminate()
+        raise e
+    else:
+      for config_name in config_names:
+        GenerateOutputForConfig(target_list, target_dicts, data, params,
+                                config_name)
diff --git a/deps/gyp/pylib/gyp/generator/ninja_test.py b/deps/gyp/pylib/gyp/generator/ninja_test.py
new file mode 100644
index 0000000000..52661bcdf0
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/ninja_test.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+""" Unit tests for the ninja.py file. """
+
+import gyp.generator.ninja as ninja
+import unittest
+import StringIO
+import sys
+import TestCommon
+
+
+class TestPrefixesAndSuffixes(unittest.TestCase):
+  def test_BinaryNamesWindows(self):
+    writer = ninja.NinjaWriter('foo', 'wee', '.', '.', 'build.ninja', '.',
+        'build.ninja', 'win')
+    spec = { 'target_name': 'wee' }
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'executable').
+        endswith('.exe'))
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'shared_library').
+        endswith('.dll'))
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'static_library').
+        endswith('.lib'))
+
+  def test_BinaryNamesLinux(self):
+    writer = ninja.NinjaWriter('foo', 'wee', '.', '.', 'build.ninja', '.',
+        'build.ninja', 'linux')
+    spec = { 'target_name': 'wee' }
+    self.assertTrue('.' not in writer.ComputeOutputFileName(spec,
+                                                            'executable'))
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'shared_library').
+        startswith('lib'))
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'static_library').
+        startswith('lib'))
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'shared_library').
+        endswith('.so'))
+    self.assertTrue(writer.ComputeOutputFileName(spec, 'static_library').
+        endswith('.a'))
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/generator/xcode.py b/deps/gyp/pylib/gyp/generator/xcode.py
new file mode 100644
index 0000000000..331e78baaa
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/xcode.py
@@ -0,0 +1,1224 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import filecmp
+import gyp.common
+import gyp.xcodeproj_file
+import errno
+import os
+import sys
+import posixpath
+import re
+import shutil
+import subprocess
+import tempfile
+
+
+# Project files generated by this module will use _intermediate_var as a
+# custom Xcode setting whose value is a DerivedSources-like directory that's
+# project-specific and configuration-specific.  The normal choice,
+# DERIVED_FILE_DIR, is target-specific, which is thought to be too restrictive
+# as it is likely that multiple targets within a single project file will want
+# to access the same set of generated files.  The other option,
+# PROJECT_DERIVED_FILE_DIR, is unsuitable because while it is project-specific,
+# it is not configuration-specific.  INTERMEDIATE_DIR is defined as
+# $(PROJECT_DERIVED_FILE_DIR)/$(CONFIGURATION).
+_intermediate_var = 'INTERMEDIATE_DIR'
+
+# SHARED_INTERMEDIATE_DIR is the same, except that it is shared among all
+# targets that share the same BUILT_PRODUCTS_DIR.
+_shared_intermediate_var = 'SHARED_INTERMEDIATE_DIR'
+
+_library_search_paths_var = 'LIBRARY_SEARCH_PATHS'
+
+generator_default_variables = {
+  'EXECUTABLE_PREFIX': '',
+  'EXECUTABLE_SUFFIX': '',
+  'STATIC_LIB_PREFIX': 'lib',
+  'SHARED_LIB_PREFIX': 'lib',
+  'STATIC_LIB_SUFFIX': '.a',
+  'SHARED_LIB_SUFFIX': '.dylib',
+  # INTERMEDIATE_DIR is a place for targets to build up intermediate products.
+  # It is specific to each build environment.  It is only guaranteed to exist
+  # and be constant within the context of a project, corresponding to a single
+  # input file.  Some build environments may allow their intermediate directory
+  # to be shared on a wider scale, but this is not guaranteed.
+  'INTERMEDIATE_DIR': '$(%s)' % _intermediate_var,
+  'OS': 'mac',
+  'PRODUCT_DIR': '$(BUILT_PRODUCTS_DIR)',
+  'LIB_DIR': '$(BUILT_PRODUCTS_DIR)',
+  'RULE_INPUT_ROOT': '$(INPUT_FILE_BASE)',
+  'RULE_INPUT_EXT': '$(INPUT_FILE_SUFFIX)',
+  'RULE_INPUT_NAME': '$(INPUT_FILE_NAME)',
+  'RULE_INPUT_PATH': '$(INPUT_FILE_PATH)',
+  'RULE_INPUT_DIRNAME': '$(INPUT_FILE_DIRNAME)',
+  'SHARED_INTERMEDIATE_DIR': '$(%s)' % _shared_intermediate_var,
+  'CONFIGURATION_NAME': '$(CONFIGURATION)',
+}
+
+# The Xcode-specific sections that hold paths.
+generator_additional_path_sections = [
+  'mac_bundle_resources',
+  'mac_framework_headers',
+  'mac_framework_private_headers',
+  # 'mac_framework_dirs', input already handles _dirs endings.
+]
+
+# The Xcode-specific keys that exist on targets and aren't moved down to
+# configurations.
+generator_additional_non_configuration_keys = [
+  'mac_bundle',
+  'mac_bundle_resources',
+  'mac_framework_headers',
+  'mac_framework_private_headers',
+  'mac_xctest_bundle',
+  'xcode_create_dependents_test_runner',
+]
+
+# We want to let any rules apply to files that are resources also.
+generator_extra_sources_for_rules = [
+  'mac_bundle_resources',
+  'mac_framework_headers',
+  'mac_framework_private_headers',
+]
+
+# Xcode's standard set of library directories, which don't need to be duplicated
+# in LIBRARY_SEARCH_PATHS. This list is not exhaustive, but that's okay.
+xcode_standard_library_dirs = frozenset([
+  '$(SDKROOT)/usr/lib',
+  '$(SDKROOT)/usr/local/lib',
+])
+
+def CreateXCConfigurationList(configuration_names):
+  xccl = gyp.xcodeproj_file.XCConfigurationList({'buildConfigurations': []})
+  if len(configuration_names) == 0:
+    configuration_names = ['Default']
+  for configuration_name in configuration_names:
+    xcbc = gyp.xcodeproj_file.XCBuildConfiguration({
+        'name': configuration_name})
+    xccl.AppendProperty('buildConfigurations', xcbc)
+  xccl.SetProperty('defaultConfigurationName', configuration_names[0])
+  return xccl
+
+
+class XcodeProject(object):
+  def __init__(self, gyp_path, path, build_file_dict):
+    self.gyp_path = gyp_path
+    self.path = path
+    self.project = gyp.xcodeproj_file.PBXProject(path=path)
+    projectDirPath = gyp.common.RelativePath(
+                         os.path.dirname(os.path.abspath(self.gyp_path)),
+                         os.path.dirname(path) or '.')
+    self.project.SetProperty('projectDirPath', projectDirPath)
+    self.project_file = \
+        gyp.xcodeproj_file.XCProjectFile({'rootObject': self.project})
+    self.build_file_dict = build_file_dict
+
+    # TODO(mark): add destructor that cleans up self.path if created_dir is
+    # True and things didn't complete successfully.  Or do something even
+    # better with "try"?
+    self.created_dir = False
+    try:
+      os.makedirs(self.path)
+      self.created_dir = True
+    except OSError, e:
+      if e.errno != errno.EEXIST:
+        raise
+
+  def Finalize1(self, xcode_targets, serialize_all_tests):
+    # Collect a list of all of the build configuration names used by the
+    # various targets in the file.  It is very heavily advised to keep each
+    # target in an entire project (even across multiple project files) using
+    # the same set of configuration names.
+    configurations = []
+    for xct in self.project.GetProperty('targets'):
+      xccl = xct.GetProperty('buildConfigurationList')
+      xcbcs = xccl.GetProperty('buildConfigurations')
+      for xcbc in xcbcs:
+        name = xcbc.GetProperty('name')
+        if name not in configurations:
+          configurations.append(name)
+
+    # Replace the XCConfigurationList attached to the PBXProject object with
+    # a new one specifying all of the configuration names used by the various
+    # targets.
+    try:
+      xccl = CreateXCConfigurationList(configurations)
+      self.project.SetProperty('buildConfigurationList', xccl)
+    except:
+      sys.stderr.write("Problem with gyp file %s\n" % self.gyp_path)
+      raise
+
+    # The need for this setting is explained above where _intermediate_var is
+    # defined.  The comments below about wanting to avoid project-wide build
+    # settings apply here too, but this needs to be set on a project-wide basis
+    # so that files relative to the _intermediate_var setting can be displayed
+    # properly in the Xcode UI.
+    #
+    # Note that for configuration-relative files such as anything relative to
+    # _intermediate_var, for the purposes of UI tree view display, Xcode will
+    # only resolve the configuration name once, when the project file is
+    # opened.  If the active build configuration is changed, the project file
+    # must be closed and reopened if it is desired for the tree view to update.
+    # This is filed as Apple radar 6588391.
+    xccl.SetBuildSetting(_intermediate_var,
+                         '$(PROJECT_DERIVED_FILE_DIR)/$(CONFIGURATION)')
+    xccl.SetBuildSetting(_shared_intermediate_var,
+                         '$(SYMROOT)/DerivedSources/$(CONFIGURATION)')
+
+    # Set user-specified project-wide build settings and config files.  This
+    # is intended to be used very sparingly.  Really, almost everything should
+    # go into target-specific build settings sections.  The project-wide
+    # settings are only intended to be used in cases where Xcode attempts to
+    # resolve variable references in a project context as opposed to a target
+    # context, such as when resolving sourceTree references while building up
+    # the tree tree view for UI display.
+    # Any values set globally are applied to all configurations, then any
+    # per-configuration values are applied.
+    for xck, xcv in self.build_file_dict.get('xcode_settings', {}).iteritems():
+      xccl.SetBuildSetting(xck, xcv)
+    if 'xcode_config_file' in self.build_file_dict:
+      config_ref = self.project.AddOrGetFileInRootGroup(
+          self.build_file_dict['xcode_config_file'])
+      xccl.SetBaseConfiguration(config_ref)
+    build_file_configurations = self.build_file_dict.get('configurations', {})
+    if build_file_configurations:
+      for config_name in configurations:
+        build_file_configuration_named = \
+            build_file_configurations.get(config_name, {})
+        if build_file_configuration_named:
+          xcc = xccl.ConfigurationNamed(config_name)
+          for xck, xcv in build_file_configuration_named.get('xcode_settings',
+                                                             {}).iteritems():
+            xcc.SetBuildSetting(xck, xcv)
+          if 'xcode_config_file' in build_file_configuration_named:
+            config_ref = self.project.AddOrGetFileInRootGroup(
+                build_file_configurations[config_name]['xcode_config_file'])
+            xcc.SetBaseConfiguration(config_ref)
+
+    # Sort the targets based on how they appeared in the input.
+    # TODO(mark): Like a lot of other things here, this assumes internal
+    # knowledge of PBXProject - in this case, of its "targets" property.
+
+    # ordinary_targets are ordinary targets that are already in the project
+    # file. run_test_targets are the targets that run unittests and should be
+    # used for the Run All Tests target.  support_targets are the action/rule
+    # targets used by GYP file targets, just kept for the assert check.
+    ordinary_targets = []
+    run_test_targets = []
+    support_targets = []
+
+    # targets is full list of targets in the project.
+    targets = []
+
+    # does the it define it's own "all"?
+    has_custom_all = False
+
+    # targets_for_all is the list of ordinary_targets that should be listed
+    # in this project's "All" target.  It includes each non_runtest_target
+    # that does not have suppress_wildcard set.
+    targets_for_all = []
+
+    for target in self.build_file_dict['targets']:
+      target_name = target['target_name']
+      toolset = target['toolset']
+      qualified_target = gyp.common.QualifiedTarget(self.gyp_path, target_name,
+                                                    toolset)
+      xcode_target = xcode_targets[qualified_target]
+      # Make sure that the target being added to the sorted list is already in
+      # the unsorted list.
+      assert xcode_target in self.project._properties['targets']
+      targets.append(xcode_target)
+      ordinary_targets.append(xcode_target)
+      if xcode_target.support_target:
+        support_targets.append(xcode_target.support_target)
+        targets.append(xcode_target.support_target)
+
+      if not int(target.get('suppress_wildcard', False)):
+        targets_for_all.append(xcode_target)
+
+      if target_name.lower() == 'all':
+        has_custom_all = True;
+
+      # If this target has a 'run_as' attribute, add its target to the
+      # targets, and add it to the test targets.
+      if target.get('run_as'):
+        # Make a target to run something.  It should have one
+        # dependency, the parent xcode target.
+        xccl = CreateXCConfigurationList(configurations)
+        run_target = gyp.xcodeproj_file.PBXAggregateTarget({
+              'name':                   'Run ' + target_name,
+              'productName':            xcode_target.GetProperty('productName'),
+              'buildConfigurationList': xccl,
+            },
+            parent=self.project)
+        run_target.AddDependency(xcode_target)
+
+        command = target['run_as']
+        script = ''
+        if command.get('working_directory'):
+          script = script + 'cd "%s"\n' % \
+                   gyp.xcodeproj_file.ConvertVariablesToShellSyntax(
+                       command.get('working_directory'))
+
+        if command.get('environment'):
+          script = script + "\n".join(
+            ['export %s="%s"' %
+             (key, gyp.xcodeproj_file.ConvertVariablesToShellSyntax(val))
+             for (key, val) in command.get('environment').iteritems()]) + "\n"
+
+        # Some test end up using sockets, files on disk, etc. and can get
+        # confused if more then one test runs at a time.  The generator
+        # flag 'xcode_serialize_all_test_runs' controls the forcing of all
+        # tests serially.  It defaults to True.  To get serial runs this
+        # little bit of python does the same as the linux flock utility to
+        # make sure only one runs at a time.
+        command_prefix = ''
+        if serialize_all_tests:
+          command_prefix = \
+"""python -c "import fcntl, subprocess, sys
+file = open('$TMPDIR/GYP_serialize_test_runs', 'a')
+fcntl.flock(file.fileno(), fcntl.LOCK_EX)
+sys.exit(subprocess.call(sys.argv[1:]))" """
+
+        # If we were unable to exec for some reason, we want to exit
+        # with an error, and fixup variable references to be shell
+        # syntax instead of xcode syntax.
+        script = script + 'exec ' + command_prefix + '%s\nexit 1\n' % \
+                 gyp.xcodeproj_file.ConvertVariablesToShellSyntax(
+                     gyp.common.EncodePOSIXShellList(command.get('action')))
+
+        ssbp = gyp.xcodeproj_file.PBXShellScriptBuildPhase({
+              'shellScript':      script,
+              'showEnvVarsInLog': 0,
+            })
+        run_target.AppendProperty('buildPhases', ssbp)
+
+        # Add the run target to the project file.
+        targets.append(run_target)
+        run_test_targets.append(run_target)
+        xcode_target.test_runner = run_target
+
+
+    # Make sure that the list of targets being replaced is the same length as
+    # the one replacing it, but allow for the added test runner targets.
+    assert len(self.project._properties['targets']) == \
+      len(ordinary_targets) + len(support_targets)
+
+    self.project._properties['targets'] = targets
+
+    # Get rid of unnecessary levels of depth in groups like the Source group.
+    self.project.RootGroupsTakeOverOnlyChildren(True)
+
+    # Sort the groups nicely.  Do this after sorting the targets, because the
+    # Products group is sorted based on the order of the targets.
+    self.project.SortGroups()
+
+    # Create an "All" target if there's more than one target in this project
+    # file and the project didn't define its own "All" target.  Put a generated
+    # "All" target first so that people opening up the project for the first
+    # time will build everything by default.
+    if len(targets_for_all) > 1 and not has_custom_all:
+      xccl = CreateXCConfigurationList(configurations)
+      all_target = gyp.xcodeproj_file.PBXAggregateTarget(
+          {
+            'buildConfigurationList': xccl,
+            'name':                   'All',
+          },
+          parent=self.project)
+
+      for target in targets_for_all:
+        all_target.AddDependency(target)
+
+      # TODO(mark): This is evil because it relies on internal knowledge of
+      # PBXProject._properties.  It's important to get the "All" target first,
+      # though.
+      self.project._properties['targets'].insert(0, all_target)
+
+    # The same, but for run_test_targets.
+    if len(run_test_targets) > 1:
+      xccl = CreateXCConfigurationList(configurations)
+      run_all_tests_target = gyp.xcodeproj_file.PBXAggregateTarget(
+          {
+            'buildConfigurationList': xccl,
+            'name':                   'Run All Tests',
+          },
+          parent=self.project)
+      for run_test_target in run_test_targets:
+        run_all_tests_target.AddDependency(run_test_target)
+
+      # Insert after the "All" target, which must exist if there is more than
+      # one run_test_target.
+      self.project._properties['targets'].insert(1, run_all_tests_target)
+
+  def Finalize2(self, xcode_targets, xcode_target_to_target_dict):
+    # Finalize2 needs to happen in a separate step because the process of
+    # updating references to other projects depends on the ordering of targets
+    # within remote project files.  Finalize1 is responsible for sorting duty,
+    # and once all project files are sorted, Finalize2 can come in and update
+    # these references.
+
+    # To support making a "test runner" target that will run all the tests
+    # that are direct dependents of any given target, we look for
+    # xcode_create_dependents_test_runner being set on an Aggregate target,
+    # and generate a second target that will run the tests runners found under
+    # the marked target.
+    for bf_tgt in self.build_file_dict['targets']:
+      if int(bf_tgt.get('xcode_create_dependents_test_runner', 0)):
+        tgt_name = bf_tgt['target_name']
+        toolset = bf_tgt['toolset']
+        qualified_target = gyp.common.QualifiedTarget(self.gyp_path,
+                                                      tgt_name, toolset)
+        xcode_target = xcode_targets[qualified_target]
+        if isinstance(xcode_target, gyp.xcodeproj_file.PBXAggregateTarget):
+          # Collect all the run test targets.
+          all_run_tests = []
+          pbxtds = xcode_target.GetProperty('dependencies')
+          for pbxtd in pbxtds:
+            pbxcip = pbxtd.GetProperty('targetProxy')
+            dependency_xct = pbxcip.GetProperty('remoteGlobalIDString')
+            if hasattr(dependency_xct, 'test_runner'):
+              all_run_tests.append(dependency_xct.test_runner)
+
+          # Directly depend on all the runners as they depend on the target
+          # that builds them.
+          if len(all_run_tests) > 0:
+            run_all_target = gyp.xcodeproj_file.PBXAggregateTarget({
+                  'name':        'Run %s Tests' % tgt_name,
+                  'productName': tgt_name,
+                },
+                parent=self.project)
+            for run_test_target in all_run_tests:
+              run_all_target.AddDependency(run_test_target)
+
+            # Insert the test runner after the related target.
+            idx = self.project._properties['targets'].index(xcode_target)
+            self.project._properties['targets'].insert(idx + 1, run_all_target)
+
+    # Update all references to other projects, to make sure that the lists of
+    # remote products are complete.  Otherwise, Xcode will fill them in when
+    # it opens the project file, which will result in unnecessary diffs.
+    # TODO(mark): This is evil because it relies on internal knowledge of
+    # PBXProject._other_pbxprojects.
+    for other_pbxproject in self.project._other_pbxprojects.keys():
+      self.project.AddOrGetProjectReference(other_pbxproject)
+
+    self.project.SortRemoteProductReferences()
+
+    # Give everything an ID.
+    self.project_file.ComputeIDs()
+
+    # Make sure that no two objects in the project file have the same ID.  If
+    # multiple objects wind up with the same ID, upon loading the file, Xcode
+    # will only recognize one object (the last one in the file?) and the
+    # results are unpredictable.
+    self.project_file.EnsureNoIDCollisions()
+
+  def Write(self):
+    # Write the project file to a temporary location first.  Xcode watches for
+    # changes to the project file and presents a UI sheet offering to reload
+    # the project when it does change.  However, in some cases, especially when
+    # multiple projects are open or when Xcode is busy, things don't work so
+    # seamlessly.  Sometimes, Xcode is able to detect that a project file has
+    # changed but can't unload it because something else is referencing it.
+    # To mitigate this problem, and to avoid even having Xcode present the UI
+    # sheet when an open project is rewritten for inconsequential changes, the
+    # project file is written to a temporary file in the xcodeproj directory
+    # first.  The new temporary file is then compared to the existing project
+    # file, if any.  If they differ, the new file replaces the old; otherwise,
+    # the new project file is simply deleted.  Xcode properly detects a file
+    # being renamed over an open project file as a change and so it remains
+    # able to present the "project file changed" sheet under this system.
+    # Writing to a temporary file first also avoids the possible problem of
+    # Xcode rereading an incomplete project file.
+    (output_fd, new_pbxproj_path) = \
+        tempfile.mkstemp(suffix='.tmp', prefix='project.pbxproj.gyp.',
+                         dir=self.path)
+
+    try:
+      output_file = os.fdopen(output_fd, 'wb')
+
+      self.project_file.Print(output_file)
+      output_file.close()
+
+      pbxproj_path = os.path.join(self.path, 'project.pbxproj')
+
+      same = False
+      try:
+        same = filecmp.cmp(pbxproj_path, new_pbxproj_path, False)
+      except OSError, e:
+        if e.errno != errno.ENOENT:
+          raise
+
+      if same:
+        # The new file is identical to the old one, just get rid of the new
+        # one.
+        os.unlink(new_pbxproj_path)
+      else:
+        # The new file is different from the old one, or there is no old one.
+        # Rename the new file to the permanent name.
+        #
+        # tempfile.mkstemp uses an overly restrictive mode, resulting in a
+        # file that can only be read by the owner, regardless of the umask.
+        # There's no reason to not respect the umask here, which means that
+        # an extra hoop is required to fetch it and reset the new file's mode.
+        #
+        # No way to get the umask without setting a new one?  Set a safe one
+        # and then set it back to the old value.
+        umask = os.umask(077)
+        os.umask(umask)
+
+        os.chmod(new_pbxproj_path, 0666 & ~umask)
+        os.rename(new_pbxproj_path, pbxproj_path)
+
+    except Exception:
+      # Don't leave turds behind.  In fact, if this code was responsible for
+      # creating the xcodeproj directory, get rid of that too.
+      os.unlink(new_pbxproj_path)
+      if self.created_dir:
+        shutil.rmtree(self.path, True)
+      raise
+
+
+def AddSourceToTarget(source, type, pbxp, xct):
+  # TODO(mark): Perhaps source_extensions and library_extensions can be made a
+  # little bit fancier.
+  source_extensions = ['c', 'cc', 'cpp', 'cxx', 'm', 'mm', 's']
+
+  # .o is conceptually more of a "source" than a "library," but Xcode thinks
+  # of "sources" as things to compile and "libraries" (or "frameworks") as
+  # things to link with. Adding an object file to an Xcode target's frameworks
+  # phase works properly.
+  library_extensions = ['a', 'dylib', 'framework', 'o']
+
+  basename = posixpath.basename(source)
+  (root, ext) = posixpath.splitext(basename)
+  if ext:
+    ext = ext[1:].lower()
+
+  if ext in source_extensions and type != 'none':
+    xct.SourcesPhase().AddFile(source)
+  elif ext in library_extensions and type != 'none':
+    xct.FrameworksPhase().AddFile(source)
+  else:
+    # Files that aren't added to a sources or frameworks build phase can still
+    # go into the project file, just not as part of a build phase.
+    pbxp.AddOrGetFileInRootGroup(source)
+
+
+def AddResourceToTarget(resource, pbxp, xct):
+  # TODO(mark): Combine with AddSourceToTarget above?  Or just inline this call
+  # where it's used.
+  xct.ResourcesPhase().AddFile(resource)
+
+
+def AddHeaderToTarget(header, pbxp, xct, is_public):
+  # TODO(mark): Combine with AddSourceToTarget above?  Or just inline this call
+  # where it's used.
+  settings = '{ATTRIBUTES = (%s, ); }' % ('Private', 'Public')[is_public]
+  xct.HeadersPhase().AddFile(header, settings)
+
+
+_xcode_variable_re = re.compile('(\$\((.*?)\))')
+def ExpandXcodeVariables(string, expansions):
+  """Expands Xcode-style $(VARIABLES) in string per the expansions dict.
+
+  In some rare cases, it is appropriate to expand Xcode variables when a
+  project file is generated.  For any substring $(VAR) in string, if VAR is a
+  key in the expansions dict, $(VAR) will be replaced with expansions[VAR].
+  Any $(VAR) substring in string for which VAR is not a key in the expansions
+  dict will remain in the returned string.
+  """
+
+  matches = _xcode_variable_re.findall(string)
+  if matches == None:
+    return string
+
+  matches.reverse()
+  for match in matches:
+    (to_replace, variable) = match
+    if not variable in expansions:
+      continue
+
+    replacement = expansions[variable]
+    string = re.sub(re.escape(to_replace), replacement, string)
+
+  return string
+
+
+_xcode_define_re = re.compile(r'([\\\"\' ])')
+def EscapeXcodeDefine(s):
+  """We must escape the defines that we give to XCode so that it knows not to
+     split on spaces and to respect backslash and quote literals. However, we
+     must not quote the define, or Xcode will incorrectly intepret variables
+     especially $(inherited)."""
+  return re.sub(_xcode_define_re, r'\\\1', s)
+
+
+def PerformBuild(data, configurations, params):
+  options = params['options']
+
+  for build_file, build_file_dict in data.iteritems():
+    (build_file_root, build_file_ext) = os.path.splitext(build_file)
+    if build_file_ext != '.gyp':
+      continue
+    xcodeproj_path = build_file_root + options.suffix + '.xcodeproj'
+    if options.generator_output:
+      xcodeproj_path = os.path.join(options.generator_output, xcodeproj_path)
+
+  for config in configurations:
+    arguments = ['xcodebuild', '-project', xcodeproj_path]
+    arguments += ['-configuration', config]
+    print "Building [%s]: %s" % (config, arguments)
+    subprocess.check_call(arguments)
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+  options = params['options']
+  generator_flags = params.get('generator_flags', {})
+  parallel_builds = generator_flags.get('xcode_parallel_builds', True)
+  serialize_all_tests = \
+      generator_flags.get('xcode_serialize_all_test_runs', True)
+  project_version = generator_flags.get('xcode_project_version', None)
+  skip_excluded_files = \
+      not generator_flags.get('xcode_list_excluded_files', True)
+  xcode_projects = {}
+  for build_file, build_file_dict in data.iteritems():
+    (build_file_root, build_file_ext) = os.path.splitext(build_file)
+    if build_file_ext != '.gyp':
+      continue
+    xcodeproj_path = build_file_root + options.suffix + '.xcodeproj'
+    if options.generator_output:
+      xcodeproj_path = os.path.join(options.generator_output, xcodeproj_path)
+    xcp = XcodeProject(build_file, xcodeproj_path, build_file_dict)
+    xcode_projects[build_file] = xcp
+    pbxp = xcp.project
+
+    if parallel_builds:
+      pbxp.SetProperty('attributes',
+                       {'BuildIndependentTargetsInParallel': 'YES'})
+    if project_version:
+      xcp.project_file.SetXcodeVersion(project_version)
+
+    # Add gyp/gypi files to project
+    if not generator_flags.get('standalone'):
+      main_group = pbxp.GetProperty('mainGroup')
+      build_group = gyp.xcodeproj_file.PBXGroup({'name': 'Build'})
+      main_group.AppendChild(build_group)
+      for included_file in build_file_dict['included_files']:
+        build_group.AddOrGetFileByPath(included_file, False)
+
+  xcode_targets = {}
+  xcode_target_to_target_dict = {}
+  for qualified_target in target_list:
+    [build_file, target_name, toolset] = \
+        gyp.common.ParseQualifiedTarget(qualified_target)
+
+    spec = target_dicts[qualified_target]
+    if spec['toolset'] != 'target':
+      raise Exception(
+          'Multiple toolsets not supported in xcode build (target %s)' %
+          qualified_target)
+    configuration_names = [spec['default_configuration']]
+    for configuration_name in sorted(spec['configurations'].keys()):
+      if configuration_name not in configuration_names:
+        configuration_names.append(configuration_name)
+    xcp = xcode_projects[build_file]
+    pbxp = xcp.project
+
+    # Set up the configurations for the target according to the list of names
+    # supplied.
+    xccl = CreateXCConfigurationList(configuration_names)
+
+    # Create an XCTarget subclass object for the target. The type with
+    # "+bundle" appended will be used if the target has "mac_bundle" set.
+    # loadable_modules not in a mac_bundle are mapped to
+    # com.googlecode.gyp.xcode.bundle, a pseudo-type that xcode.py interprets
+    # to create a single-file mh_bundle.
+    _types = {
+      'executable':             'com.apple.product-type.tool',
+      'loadable_module':        'com.googlecode.gyp.xcode.bundle',
+      'shared_library':         'com.apple.product-type.library.dynamic',
+      'static_library':         'com.apple.product-type.library.static',
+      'executable+bundle':      'com.apple.product-type.application',
+      'loadable_module+bundle': 'com.apple.product-type.bundle',
+      'loadable_module+xctest': 'com.apple.product-type.bundle.unit-test',
+      'shared_library+bundle':  'com.apple.product-type.framework',
+    }
+
+    target_properties = {
+      'buildConfigurationList': xccl,
+      'name':                   target_name,
+    }
+
+    type = spec['type']
+    is_xctest = int(spec.get('mac_xctest_bundle', 0))
+    is_bundle = int(spec.get('mac_bundle', 0)) or is_xctest
+    if type != 'none':
+      type_bundle_key = type
+      if is_xctest:
+        type_bundle_key += '+xctest'
+        assert type == 'loadable_module', (
+            'mac_xctest_bundle targets must have type loadable_module '
+            '(target %s)' % target_name)
+      elif is_bundle:
+        type_bundle_key += '+bundle'
+
+      xctarget_type = gyp.xcodeproj_file.PBXNativeTarget
+      try:
+        target_properties['productType'] = _types[type_bundle_key]
+      except KeyError, e:
+        gyp.common.ExceptionAppend(e, "-- unknown product type while "
+                                   "writing target %s" % target_name)
+        raise
+    else:
+      xctarget_type = gyp.xcodeproj_file.PBXAggregateTarget
+      assert not is_bundle, (
+          'mac_bundle targets cannot have type none (target "%s")' %
+          target_name)
+      assert not is_xctest, (
+          'mac_xctest_bundle targets cannot have type none (target "%s")' %
+          target_name)
+
+    target_product_name = spec.get('product_name')
+    if target_product_name is not None:
+      target_properties['productName'] = target_product_name
+
+    xct = xctarget_type(target_properties, parent=pbxp,
+                        force_outdir=spec.get('product_dir'),
+                        force_prefix=spec.get('product_prefix'),
+                        force_extension=spec.get('product_extension'))
+    pbxp.AppendProperty('targets', xct)
+    xcode_targets[qualified_target] = xct
+    xcode_target_to_target_dict[xct] = spec
+
+    spec_actions = spec.get('actions', [])
+    spec_rules = spec.get('rules', [])
+
+    # Xcode has some "issues" with checking dependencies for the "Compile
+    # sources" step with any source files/headers generated by actions/rules.
+    # To work around this, if a target is building anything directly (not
+    # type "none"), then a second target is used to run the GYP actions/rules
+    # and is made a dependency of this target.  This way the work is done
+    # before the dependency checks for what should be recompiled.
+    support_xct = None
+    if type != 'none' and (spec_actions or spec_rules):
+      support_xccl = CreateXCConfigurationList(configuration_names);
+      support_target_properties = {
+        'buildConfigurationList': support_xccl,
+        'name':                   target_name + ' Support',
+      }
+      if target_product_name:
+        support_target_properties['productName'] = \
+            target_product_name + ' Support'
+      support_xct = \
+          gyp.xcodeproj_file.PBXAggregateTarget(support_target_properties,
+                                                parent=pbxp)
+      pbxp.AppendProperty('targets', support_xct)
+      xct.AddDependency(support_xct)
+    # Hang the support target off the main target so it can be tested/found
+    # by the generator during Finalize.
+    xct.support_target = support_xct
+
+    prebuild_index = 0
+
+    # Add custom shell script phases for "actions" sections.
+    for action in spec_actions:
+      # There's no need to write anything into the script to ensure that the
+      # output directories already exist, because Xcode will look at the
+      # declared outputs and automatically ensure that they exist for us.
+
+      # Do we have a message to print when this action runs?
+      message = action.get('message')
+      if message:
+        message = 'echo note: ' + gyp.common.EncodePOSIXShellArgument(message)
+      else:
+        message = ''
+
+      # Turn the list into a string that can be passed to a shell.
+      action_string = gyp.common.EncodePOSIXShellList(action['action'])
+
+      # Convert Xcode-type variable references to sh-compatible environment
+      # variable references.
+      message_sh = gyp.xcodeproj_file.ConvertVariablesToShellSyntax(message)
+      action_string_sh = gyp.xcodeproj_file.ConvertVariablesToShellSyntax(
+        action_string)
+
+      script = ''
+      # Include the optional message
+      if message_sh:
+        script += message_sh + '\n'
+      # Be sure the script runs in exec, and that if exec fails, the script
+      # exits signalling an error.
+      script += 'exec ' + action_string_sh + '\nexit 1\n'
+      ssbp = gyp.xcodeproj_file.PBXShellScriptBuildPhase({
+            'inputPaths': action['inputs'],
+            'name': 'Action "' + action['action_name'] + '"',
+            'outputPaths': action['outputs'],
+            'shellScript': script,
+            'showEnvVarsInLog': 0,
+          })
+
+      if support_xct:
+        support_xct.AppendProperty('buildPhases', ssbp)
+      else:
+        # TODO(mark): this assumes too much knowledge of the internals of
+        # xcodeproj_file; some of these smarts should move into xcodeproj_file
+        # itself.
+        xct._properties['buildPhases'].insert(prebuild_index, ssbp)
+        prebuild_index = prebuild_index + 1
+
+      # TODO(mark): Should verify that at most one of these is specified.
+      if int(action.get('process_outputs_as_sources', False)):
+        for output in action['outputs']:
+          AddSourceToTarget(output, type, pbxp, xct)
+
+      if int(action.get('process_outputs_as_mac_bundle_resources', False)):
+        for output in action['outputs']:
+          AddResourceToTarget(output, pbxp, xct)
+
+    # tgt_mac_bundle_resources holds the list of bundle resources so
+    # the rule processing can check against it.
+    if is_bundle:
+      tgt_mac_bundle_resources = spec.get('mac_bundle_resources', [])
+    else:
+      tgt_mac_bundle_resources = []
+
+    # Add custom shell script phases driving "make" for "rules" sections.
+    #
+    # Xcode's built-in rule support is almost powerful enough to use directly,
+    # but there are a few significant deficiencies that render them unusable.
+    # There are workarounds for some of its inadequacies, but in aggregate,
+    # the workarounds added complexity to the generator, and some workarounds
+    # actually require input files to be crafted more carefully than I'd like.
+    # Consequently, until Xcode rules are made more capable, "rules" input
+    # sections will be handled in Xcode output by shell script build phases
+    # performed prior to the compilation phase.
+    #
+    # The following problems with Xcode rules were found.  The numbers are
+    # Apple radar IDs.  I hope that these shortcomings are addressed, I really
+    # liked having the rules handled directly in Xcode during the period that
+    # I was prototyping this.
+    #
+    # 6588600 Xcode compiles custom script rule outputs too soon, compilation
+    #         fails.  This occurs when rule outputs from distinct inputs are
+    #         interdependent.  The only workaround is to put rules and their
+    #         inputs in a separate target from the one that compiles the rule
+    #         outputs.  This requires input file cooperation and it means that
+    #         process_outputs_as_sources is unusable.
+    # 6584932 Need to declare that custom rule outputs should be excluded from
+    #         compilation.  A possible workaround is to lie to Xcode about a
+    #         rule's output, giving it a dummy file it doesn't know how to
+    #         compile.  The rule action script would need to touch the dummy.
+    # 6584839 I need a way to declare additional inputs to a custom rule.
+    #         A possible workaround is a shell script phase prior to
+    #         compilation that touches a rule's primary input files if any
+    #         would-be additional inputs are newer than the output.  Modifying
+    #         the source tree - even just modification times - feels dirty.
+    # 6564240 Xcode "custom script" build rules always dump all environment
+    #         variables.  This is a low-prioroty problem and is not a
+    #         show-stopper.
+    rules_by_ext = {}
+    for rule in spec_rules:
+      rules_by_ext[rule['extension']] = rule
+
+      # First, some definitions:
+      #
+      # A "rule source" is a file that was listed in a target's "sources"
+      # list and will have a rule applied to it on the basis of matching the
+      # rule's "extensions" attribute.  Rule sources are direct inputs to
+      # rules.
+      #
+      # Rule definitions may specify additional inputs in their "inputs"
+      # attribute.  These additional inputs are used for dependency tracking
+      # purposes.
+      #
+      # A "concrete output" is a rule output with input-dependent variables
+      # resolved.  For example, given a rule with:
+      #   'extension': 'ext', 'outputs': ['$(INPUT_FILE_BASE).cc'],
+      # if the target's "sources" list contained "one.ext" and "two.ext",
+      # the "concrete output" for rule input "two.ext" would be "two.cc".  If
+      # a rule specifies multiple outputs, each input file that the rule is
+      # applied to will have the same number of concrete outputs.
+      #
+      # If any concrete outputs are outdated or missing relative to their
+      # corresponding rule_source or to any specified additional input, the
+      # rule action must be performed to generate the concrete outputs.
+
+      # concrete_outputs_by_rule_source will have an item at the same index
+      # as the rule['rule_sources'] that it corresponds to.  Each item is a
+      # list of all of the concrete outputs for the rule_source.
+      concrete_outputs_by_rule_source = []
+
+      # concrete_outputs_all is a flat list of all concrete outputs that this
+      # rule is able to produce, given the known set of input files
+      # (rule_sources) that apply to it.
+      concrete_outputs_all = []
+
+      # messages & actions are keyed by the same indices as rule['rule_sources']
+      # and concrete_outputs_by_rule_source.  They contain the message and
+      # action to perform after resolving input-dependent variables.  The
+      # message is optional, in which case None is stored for each rule source.
+      messages = []
+      actions = []
+
+      for rule_source in rule.get('rule_sources', []):
+        rule_source_dirname, rule_source_basename = \
+            posixpath.split(rule_source)
+        (rule_source_root, rule_source_ext) = \
+            posixpath.splitext(rule_source_basename)
+
+        # These are the same variable names that Xcode uses for its own native
+        # rule support.  Because Xcode's rule engine is not being used, they
+        # need to be expanded as they are written to the makefile.
+        rule_input_dict = {
+          'INPUT_FILE_BASE':   rule_source_root,
+          'INPUT_FILE_SUFFIX': rule_source_ext,
+          'INPUT_FILE_NAME':   rule_source_basename,
+          'INPUT_FILE_PATH':   rule_source,
+          'INPUT_FILE_DIRNAME': rule_source_dirname,
+        }
+
+        concrete_outputs_for_this_rule_source = []
+        for output in rule.get('outputs', []):
+          # Fortunately, Xcode and make both use $(VAR) format for their
+          # variables, so the expansion is the only transformation necessary.
+          # Any remaning $(VAR)-type variables in the string can be given
+          # directly to make, which will pick up the correct settings from
+          # what Xcode puts into the environment.
+          concrete_output = ExpandXcodeVariables(output, rule_input_dict)
+          concrete_outputs_for_this_rule_source.append(concrete_output)
+
+          # Add all concrete outputs to the project.
+          pbxp.AddOrGetFileInRootGroup(concrete_output)
+
+        concrete_outputs_by_rule_source.append( \
+            concrete_outputs_for_this_rule_source)
+        concrete_outputs_all.extend(concrete_outputs_for_this_rule_source)
+
+        # TODO(mark): Should verify that at most one of these is specified.
+        if int(rule.get('process_outputs_as_sources', False)):
+          for output in concrete_outputs_for_this_rule_source:
+            AddSourceToTarget(output, type, pbxp, xct)
+
+        # If the file came from the mac_bundle_resources list or if the rule
+        # is marked to process outputs as bundle resource, do so.
+        was_mac_bundle_resource = rule_source in tgt_mac_bundle_resources
+        if was_mac_bundle_resource or \
+            int(rule.get('process_outputs_as_mac_bundle_resources', False)):
+          for output in concrete_outputs_for_this_rule_source:
+            AddResourceToTarget(output, pbxp, xct)
+
+        # Do we have a message to print when this rule runs?
+        message = rule.get('message')
+        if message:
+          message = gyp.common.EncodePOSIXShellArgument(message)
+          message = ExpandXcodeVariables(message, rule_input_dict)
+        messages.append(message)
+
+        # Turn the list into a string that can be passed to a shell.
+        action_string = gyp.common.EncodePOSIXShellList(rule['action'])
+
+        action = ExpandXcodeVariables(action_string, rule_input_dict)
+        actions.append(action)
+
+      if len(concrete_outputs_all) > 0:
+        # TODO(mark): There's a possibilty for collision here.  Consider
+        # target "t" rule "A_r" and target "t_A" rule "r".
+        makefile_name = '%s.make' % re.sub(
+            '[^a-zA-Z0-9_]', '_' , '%s_%s' % (target_name, rule['rule_name']))
+        makefile_path = os.path.join(xcode_projects[build_file].path,
+                                     makefile_name)
+        # TODO(mark): try/close?  Write to a temporary file and swap it only
+        # if it's got changes?
+        makefile = open(makefile_path, 'wb')
+
+        # make will build the first target in the makefile by default.  By
+        # convention, it's called "all".  List all (or at least one)
+        # concrete output for each rule source as a prerequisite of the "all"
+        # target.
+        makefile.write('all: \\\n')
+        for concrete_output_index in \
+            xrange(0, len(concrete_outputs_by_rule_source)):
+          # Only list the first (index [0]) concrete output of each input
+          # in the "all" target.  Otherwise, a parallel make (-j > 1) would
+          # attempt to process each input multiple times simultaneously.
+          # Otherwise, "all" could just contain the entire list of
+          # concrete_outputs_all.
+          concrete_output = \
+              concrete_outputs_by_rule_source[concrete_output_index][0]
+          if concrete_output_index == len(concrete_outputs_by_rule_source) - 1:
+            eol = ''
+          else:
+            eol = ' \\'
+          makefile.write('    %s%s\n' % (concrete_output, eol))
+
+        for (rule_source, concrete_outputs, message, action) in \
+            zip(rule['rule_sources'], concrete_outputs_by_rule_source,
+                messages, actions):
+          makefile.write('\n')
+
+          # Add a rule that declares it can build each concrete output of a
+          # rule source.  Collect the names of the directories that are
+          # required.
+          concrete_output_dirs = []
+          for concrete_output_index in xrange(0, len(concrete_outputs)):
+            concrete_output = concrete_outputs[concrete_output_index]
+            if concrete_output_index == 0:
+              bol = ''
+            else:
+              bol = '    '
+            makefile.write('%s%s \\\n' % (bol, concrete_output))
+
+            concrete_output_dir = posixpath.dirname(concrete_output)
+            if (concrete_output_dir and
+                concrete_output_dir not in concrete_output_dirs):
+              concrete_output_dirs.append(concrete_output_dir)
+
+          makefile.write('    : \\\n')
+
+          # The prerequisites for this rule are the rule source itself and
+          # the set of additional rule inputs, if any.
+          prerequisites = [rule_source]
+          prerequisites.extend(rule.get('inputs', []))
+          for prerequisite_index in xrange(0, len(prerequisites)):
+            prerequisite = prerequisites[prerequisite_index]
+            if prerequisite_index == len(prerequisites) - 1:
+              eol = ''
+            else:
+              eol = ' \\'
+            makefile.write('    %s%s\n' % (prerequisite, eol))
+
+          # Make sure that output directories exist before executing the rule
+          # action.
+          if len(concrete_output_dirs) > 0:
+            makefile.write('\t@mkdir -p "%s"\n' %
+                           '" "'.join(concrete_output_dirs))
+
+          # The rule message and action have already had the necessary variable
+          # substitutions performed.
+          if message:
+            # Mark it with note: so Xcode picks it up in build output.
+            makefile.write('\t@echo note: %s\n' % message)
+          makefile.write('\t%s\n' % action)
+
+        makefile.close()
+
+        # It might be nice to ensure that needed output directories exist
+        # here rather than in each target in the Makefile, but that wouldn't
+        # work if there ever was a concrete output that had an input-dependent
+        # variable anywhere other than in the leaf position.
+
+        # Don't declare any inputPaths or outputPaths.  If they're present,
+        # Xcode will provide a slight optimization by only running the script
+        # phase if any output is missing or outdated relative to any input.
+        # Unfortunately, it will also assume that all outputs are touched by
+        # the script, and if the outputs serve as files in a compilation
+        # phase, they will be unconditionally rebuilt.  Since make might not
+        # rebuild everything that could be declared here as an output, this
+        # extra compilation activity is unnecessary.  With inputPaths and
+        # outputPaths not supplied, make will always be called, but it knows
+        # enough to not do anything when everything is up-to-date.
+
+        # To help speed things up, pass -j COUNT to make so it does some work
+        # in parallel.  Don't use ncpus because Xcode will build ncpus targets
+        # in parallel and if each target happens to have a rules step, there
+        # would be ncpus^2 things going.  With a machine that has 2 quad-core
+        # Xeons, a build can quickly run out of processes based on
+        # scheduling/other tasks, and randomly failing builds are no good.
+        script = \
+"""JOB_COUNT="$(/usr/sbin/sysctl -n hw.ncpu)"
+if [ "${JOB_COUNT}" -gt 4 ]; then
+  JOB_COUNT=4
+fi
+exec xcrun make -f "${PROJECT_FILE_PATH}/%s" -j "${JOB_COUNT}"
+exit 1
+""" % makefile_name
+        ssbp = gyp.xcodeproj_file.PBXShellScriptBuildPhase({
+              'name': 'Rule "' + rule['rule_name'] + '"',
+              'shellScript': script,
+              'showEnvVarsInLog': 0,
+            })
+
+        if support_xct:
+          support_xct.AppendProperty('buildPhases', ssbp)
+        else:
+          # TODO(mark): this assumes too much knowledge of the internals of
+          # xcodeproj_file; some of these smarts should move into xcodeproj_file
+          # itself.
+          xct._properties['buildPhases'].insert(prebuild_index, ssbp)
+          prebuild_index = prebuild_index + 1
+
+      # Extra rule inputs also go into the project file.  Concrete outputs were
+      # already added when they were computed.
+      groups = ['inputs', 'inputs_excluded']
+      if skip_excluded_files:
+        groups = [x for x in groups if not x.endswith('_excluded')]
+      for group in groups:
+        for item in rule.get(group, []):
+          pbxp.AddOrGetFileInRootGroup(item)
+
+    # Add "sources".
+    for source in spec.get('sources', []):
+      (source_root, source_extension) = posixpath.splitext(source)
+      if source_extension[1:] not in rules_by_ext:
+        # AddSourceToTarget will add the file to a root group if it's not
+        # already there.
+        AddSourceToTarget(source, type, pbxp, xct)
+      else:
+        pbxp.AddOrGetFileInRootGroup(source)
+
+    # Add "mac_bundle_resources" and "mac_framework_private_headers" if
+    # it's a bundle of any type.
+    if is_bundle:
+      for resource in tgt_mac_bundle_resources:
+        (resource_root, resource_extension) = posixpath.splitext(resource)
+        if resource_extension[1:] not in rules_by_ext:
+          AddResourceToTarget(resource, pbxp, xct)
+        else:
+          pbxp.AddOrGetFileInRootGroup(resource)
+
+      for header in spec.get('mac_framework_private_headers', []):
+        AddHeaderToTarget(header, pbxp, xct, False)
+
+    # Add "mac_framework_headers". These can be valid for both frameworks
+    # and static libraries.
+    if is_bundle or type == 'static_library':
+      for header in spec.get('mac_framework_headers', []):
+        AddHeaderToTarget(header, pbxp, xct, True)
+
+    # Add "copies".
+    pbxcp_dict = {}
+    for copy_group in spec.get('copies', []):
+      dest = copy_group['destination']
+      if dest[0] not in ('/', '$'):
+        # Relative paths are relative to $(SRCROOT).
+        dest = '$(SRCROOT)/' + dest
+
+      # Coalesce multiple "copies" sections in the same target with the same
+      # "destination" property into the same PBXCopyFilesBuildPhase, otherwise
+      # they'll wind up with ID collisions.
+      pbxcp = pbxcp_dict.get(dest, None)
+      if pbxcp is None:
+        pbxcp = gyp.xcodeproj_file.PBXCopyFilesBuildPhase({
+              'name': 'Copy to ' + copy_group['destination']
+            },
+            parent=xct)
+        pbxcp.SetDestination(dest)
+
+        # TODO(mark): The usual comment about this knowing too much about
+        # gyp.xcodeproj_file internals applies.
+        xct._properties['buildPhases'].insert(prebuild_index, pbxcp)
+
+        pbxcp_dict[dest] = pbxcp
+
+      for file in copy_group['files']:
+        pbxcp.AddFile(file)
+
+    # Excluded files can also go into the project file.
+    if not skip_excluded_files:
+      for key in ['sources', 'mac_bundle_resources', 'mac_framework_headers',
+                  'mac_framework_private_headers']:
+        excluded_key = key + '_excluded'
+        for item in spec.get(excluded_key, []):
+          pbxp.AddOrGetFileInRootGroup(item)
+
+    # So can "inputs" and "outputs" sections of "actions" groups.
+    groups = ['inputs', 'inputs_excluded', 'outputs', 'outputs_excluded']
+    if skip_excluded_files:
+      groups = [x for x in groups if not x.endswith('_excluded')]
+    for action in spec.get('actions', []):
+      for group in groups:
+        for item in action.get(group, []):
+          # Exclude anything in BUILT_PRODUCTS_DIR.  They're products, not
+          # sources.
+          if not item.startswith('$(BUILT_PRODUCTS_DIR)/'):
+            pbxp.AddOrGetFileInRootGroup(item)
+
+    for postbuild in spec.get('postbuilds', []):
+      action_string_sh = gyp.common.EncodePOSIXShellList(postbuild['action'])
+      script = 'exec ' + action_string_sh + '\nexit 1\n'
+
+      # Make the postbuild step depend on the output of ld or ar from this
+      # target. Apparently putting the script step after the link step isn't
+      # sufficient to ensure proper ordering in all cases. With an input
+      # declared but no outputs, the script step should run every time, as
+      # desired.
+      ssbp = gyp.xcodeproj_file.PBXShellScriptBuildPhase({
+            'inputPaths': ['$(BUILT_PRODUCTS_DIR)/$(EXECUTABLE_PATH)'],
+            'name': 'Postbuild "' + postbuild['postbuild_name'] + '"',
+            'shellScript': script,
+            'showEnvVarsInLog': 0,
+          })
+      xct.AppendProperty('buildPhases', ssbp)
+
+    # Add dependencies before libraries, because adding a dependency may imply
+    # adding a library.  It's preferable to keep dependencies listed first
+    # during a link phase so that they can override symbols that would
+    # otherwise be provided by libraries, which will usually include system
+    # libraries.  On some systems, ld is finicky and even requires the
+    # libraries to be ordered in such a way that unresolved symbols in
+    # earlier-listed libraries may only be resolved by later-listed libraries.
+    # The Mac linker doesn't work that way, but other platforms do, and so
+    # their linker invocations need to be constructed in this way.  There's
+    # no compelling reason for Xcode's linker invocations to differ.
+
+    if 'dependencies' in spec:
+      for dependency in spec['dependencies']:
+        xct.AddDependency(xcode_targets[dependency])
+        # The support project also gets the dependencies (in case they are
+        # needed for the actions/rules to work).
+        if support_xct:
+          support_xct.AddDependency(xcode_targets[dependency])
+
+    if 'libraries' in spec:
+      for library in spec['libraries']:
+        xct.FrameworksPhase().AddFile(library)
+        # Add the library's directory to LIBRARY_SEARCH_PATHS if necessary.
+        # I wish Xcode handled this automatically.
+        library_dir = posixpath.dirname(library)
+        if library_dir not in xcode_standard_library_dirs and (
+            not xct.HasBuildSetting(_library_search_paths_var) or
+            library_dir not in xct.GetBuildSetting(_library_search_paths_var)):
+          xct.AppendBuildSetting(_library_search_paths_var, library_dir)
+
+    for configuration_name in configuration_names:
+      configuration = spec['configurations'][configuration_name]
+      xcbc = xct.ConfigurationNamed(configuration_name)
+      for include_dir in configuration.get('mac_framework_dirs', []):
+        xcbc.AppendBuildSetting('FRAMEWORK_SEARCH_PATHS', include_dir)
+      for include_dir in configuration.get('include_dirs', []):
+        xcbc.AppendBuildSetting('HEADER_SEARCH_PATHS', include_dir)
+      for library_dir in configuration.get('library_dirs', []):
+        if library_dir not in xcode_standard_library_dirs and (
+            not xcbc.HasBuildSetting(_library_search_paths_var) or
+            library_dir not in xcbc.GetBuildSetting(_library_search_paths_var)):
+          xcbc.AppendBuildSetting(_library_search_paths_var, library_dir)
+
+      if 'defines' in configuration:
+        for define in configuration['defines']:
+          set_define = EscapeXcodeDefine(define)
+          xcbc.AppendBuildSetting('GCC_PREPROCESSOR_DEFINITIONS', set_define)
+      if 'xcode_settings' in configuration:
+        for xck, xcv in configuration['xcode_settings'].iteritems():
+          xcbc.SetBuildSetting(xck, xcv)
+      if 'xcode_config_file' in configuration:
+        config_ref = pbxp.AddOrGetFileInRootGroup(
+            configuration['xcode_config_file'])
+        xcbc.SetBaseConfiguration(config_ref)
+
+  build_files = []
+  for build_file, build_file_dict in data.iteritems():
+    if build_file.endswith('.gyp'):
+      build_files.append(build_file)
+
+  for build_file in build_files:
+    xcode_projects[build_file].Finalize1(xcode_targets, serialize_all_tests)
+
+  for build_file in build_files:
+    xcode_projects[build_file].Finalize2(xcode_targets,
+                                         xcode_target_to_target_dict)
+
+  for build_file in build_files:
+    xcode_projects[build_file].Write()
diff --git a/deps/gyp/pylib/gyp/generator/xcode_test.py b/deps/gyp/pylib/gyp/generator/xcode_test.py
new file mode 100644
index 0000000000..260324a43f
--- /dev/null
+++ b/deps/gyp/pylib/gyp/generator/xcode_test.py
@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+""" Unit tests for the xcode.py file. """
+
+import gyp.generator.xcode as xcode
+import unittest
+import sys
+
+
+class TestEscapeXcodeDefine(unittest.TestCase):
+  if sys.platform == 'darwin':
+    def test_InheritedRemainsUnescaped(self):
+      self.assertEqual(xcode.EscapeXcodeDefine('$(inherited)'), '$(inherited)')
+
+    def test_Escaping(self):
+      self.assertEqual(xcode.EscapeXcodeDefine('a b"c\\'), 'a\\ b\\"c\\\\')
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/input.py b/deps/gyp/pylib/gyp/input.py
new file mode 100644
index 0000000000..6472912db8
--- /dev/null
+++ b/deps/gyp/pylib/gyp/input.py
@@ -0,0 +1,2809 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+from compiler.ast import Const
+from compiler.ast import Dict
+from compiler.ast import Discard
+from compiler.ast import List
+from compiler.ast import Module
+from compiler.ast import Node
+from compiler.ast import Stmt
+import compiler
+import copy
+import gyp.common
+import multiprocessing
+import optparse
+import os.path
+import re
+import shlex
+import signal
+import subprocess
+import sys
+import threading
+import time
+import traceback
+from gyp.common import GypError
+
+
+# A list of types that are treated as linkable.
+linkable_types = ['executable', 'shared_library', 'loadable_module']
+
+# A list of sections that contain links to other targets.
+dependency_sections = ['dependencies', 'export_dependent_settings']
+
+# base_path_sections is a list of sections defined by GYP that contain
+# pathnames.  The generators can provide more keys, the two lists are merged
+# into path_sections, but you should call IsPathSection instead of using either
+# list directly.
+base_path_sections = [
+  'destination',
+  'files',
+  'include_dirs',
+  'inputs',
+  'libraries',
+  'outputs',
+  'sources',
+]
+path_sections = []
+
+is_path_section_charset = set('=+?!')
+is_path_section_match_re = re.compile('_(dir|file|path)s?$')
+
+def IsPathSection(section):
+  # If section ends in one of these characters, it's applied to a section
+  # without the trailing characters.  '/' is notably absent from this list,
+  # because there's no way for a regular expression to be treated as a path.
+  while section[-1:] in is_path_section_charset:
+    section = section[:-1]
+  return section in path_sections or is_path_section_match_re.search(section)
+
+# base_non_configuration_keys is a list of key names that belong in the target
+# itself and should not be propagated into its configurations.  It is merged
+# with a list that can come from the generator to
+# create non_configuration_keys.
+base_non_configuration_keys = [
+  # Sections that must exist inside targets and not configurations.
+  'actions',
+  'configurations',
+  'copies',
+  'default_configuration',
+  'dependencies',
+  'dependencies_original',
+  'libraries',
+  'postbuilds',
+  'product_dir',
+  'product_extension',
+  'product_name',
+  'product_prefix',
+  'rules',
+  'run_as',
+  'sources',
+  'standalone_static_library',
+  'suppress_wildcard',
+  'target_name',
+  'toolset',
+  'toolsets',
+  'type',
+
+  # Sections that can be found inside targets or configurations, but that
+  # should not be propagated from targets into their configurations.
+  'variables',
+]
+non_configuration_keys = []
+
+# Keys that do not belong inside a configuration dictionary.
+invalid_configuration_keys = [
+  'actions',
+  'all_dependent_settings',
+  'configurations',
+  'dependencies',
+  'direct_dependent_settings',
+  'libraries',
+  'link_settings',
+  'sources',
+  'standalone_static_library',
+  'target_name',
+  'type',
+]
+
+# Controls whether or not the generator supports multiple toolsets.
+multiple_toolsets = False
+
+# Paths for converting filelist paths to output paths: {
+#   toplevel,
+#   qualified_output_dir,
+# }
+generator_filelist_paths = None
+
+def GetIncludedBuildFiles(build_file_path, aux_data, included=None):
+  """Return a list of all build files included into build_file_path.
+
+  The returned list will contain build_file_path as well as all other files
+  that it included, either directly or indirectly.  Note that the list may
+  contain files that were included into a conditional section that evaluated
+  to false and was not merged into build_file_path's dict.
+
+  aux_data is a dict containing a key for each build file or included build
+  file.  Those keys provide access to dicts whose "included" keys contain
+  lists of all other files included by the build file.
+
+  included should be left at its default None value by external callers.  It
+  is used for recursion.
+
+  The returned list will not contain any duplicate entries.  Each build file
+  in the list will be relative to the current directory.
+  """
+
+  if included == None:
+    included = []
+
+  if build_file_path in included:
+    return included
+
+  included.append(build_file_path)
+
+  for included_build_file in aux_data[build_file_path].get('included', []):
+    GetIncludedBuildFiles(included_build_file, aux_data, included)
+
+  return included
+
+
+def CheckedEval(file_contents):
+  """Return the eval of a gyp file.
+
+  The gyp file is restricted to dictionaries and lists only, and
+  repeated keys are not allowed.
+
+  Note that this is slower than eval() is.
+  """
+
+  ast = compiler.parse(file_contents)
+  assert isinstance(ast, Module)
+  c1 = ast.getChildren()
+  assert c1[0] is None
+  assert isinstance(c1[1], Stmt)
+  c2 = c1[1].getChildren()
+  assert isinstance(c2[0], Discard)
+  c3 = c2[0].getChildren()
+  assert len(c3) == 1
+  return CheckNode(c3[0], [])
+
+
+def CheckNode(node, keypath):
+  if isinstance(node, Dict):
+    c = node.getChildren()
+    dict = {}
+    for n in range(0, len(c), 2):
+      assert isinstance(c[n], Const)
+      key = c[n].getChildren()[0]
+      if key in dict:
+        raise GypError("Key '" + key + "' repeated at level " +
+              repr(len(keypath) + 1) + " with key path '" +
+              '.'.join(keypath) + "'")
+      kp = list(keypath)  # Make a copy of the list for descending this node.
+      kp.append(key)
+      dict[key] = CheckNode(c[n + 1], kp)
+    return dict
+  elif isinstance(node, List):
+    c = node.getChildren()
+    children = []
+    for index, child in enumerate(c):
+      kp = list(keypath)  # Copy list.
+      kp.append(repr(index))
+      children.append(CheckNode(child, kp))
+    return children
+  elif isinstance(node, Const):
+    return node.getChildren()[0]
+  else:
+    raise TypeError, "Unknown AST node at key path '" + '.'.join(keypath) + \
+         "': " + repr(node)
+
+
+def LoadOneBuildFile(build_file_path, data, aux_data, variables, includes,
+                     is_target, check):
+  if build_file_path in data:
+    return data[build_file_path]
+
+  if os.path.exists(build_file_path):
+    build_file_contents = open(build_file_path).read()
+  else:
+    raise GypError("%s not found (cwd: %s)" % (build_file_path, os.getcwd()))
+
+  build_file_data = None
+  try:
+    if check:
+      build_file_data = CheckedEval(build_file_contents)
+    else:
+      build_file_data = eval(build_file_contents, {'__builtins__': None},
+                             None)
+  except SyntaxError, e:
+    e.filename = build_file_path
+    raise
+  except Exception, e:
+    gyp.common.ExceptionAppend(e, 'while reading ' + build_file_path)
+    raise
+
+  if not isinstance(build_file_data, dict):
+    raise GypError("%s does not evaluate to a dictionary." % build_file_path)
+
+  data[build_file_path] = build_file_data
+  aux_data[build_file_path] = {}
+
+  # Scan for includes and merge them in.
+  if ('skip_includes' not in build_file_data or
+      not build_file_data['skip_includes']):
+    try:
+      if is_target:
+        LoadBuildFileIncludesIntoDict(build_file_data, build_file_path, data,
+                                      aux_data, variables, includes, check)
+      else:
+        LoadBuildFileIncludesIntoDict(build_file_data, build_file_path, data,
+                                      aux_data, variables, None, check)
+    except Exception, e:
+      gyp.common.ExceptionAppend(e,
+                                 'while reading includes of ' + build_file_path)
+      raise
+
+  return build_file_data
+
+
+def LoadBuildFileIncludesIntoDict(subdict, subdict_path, data, aux_data,
+                                  variables, includes, check):
+  includes_list = []
+  if includes != None:
+    includes_list.extend(includes)
+  if 'includes' in subdict:
+    for include in subdict['includes']:
+      # "include" is specified relative to subdict_path, so compute the real
+      # path to include by appending the provided "include" to the directory
+      # in which subdict_path resides.
+      relative_include = \
+          os.path.normpath(os.path.join(os.path.dirname(subdict_path), include))
+      includes_list.append(relative_include)
+    # Unhook the includes list, it's no longer needed.
+    del subdict['includes']
+
+  # Merge in the included files.
+  for include in includes_list:
+    if not 'included' in aux_data[subdict_path]:
+      aux_data[subdict_path]['included'] = []
+    aux_data[subdict_path]['included'].append(include)
+
+    gyp.DebugOutput(gyp.DEBUG_INCLUDES, "Loading Included File: '%s'", include)
+
+    MergeDicts(subdict,
+               LoadOneBuildFile(include, data, aux_data, variables, None,
+                                False, check),
+               subdict_path, include)
+
+  # Recurse into subdictionaries.
+  for k, v in subdict.iteritems():
+    if v.__class__ == dict:
+      LoadBuildFileIncludesIntoDict(v, subdict_path, data, aux_data, variables,
+                                    None, check)
+    elif v.__class__ == list:
+      LoadBuildFileIncludesIntoList(v, subdict_path, data, aux_data, variables,
+                                    check)
+
+
+# This recurses into lists so that it can look for dicts.
+def LoadBuildFileIncludesIntoList(sublist, sublist_path, data, aux_data,
+                                  variables, check):
+  for item in sublist:
+    if item.__class__ == dict:
+      LoadBuildFileIncludesIntoDict(item, sublist_path, data, aux_data,
+                                    variables, None, check)
+    elif item.__class__ == list:
+      LoadBuildFileIncludesIntoList(item, sublist_path, data, aux_data,
+                                    variables, check)
+
+# Processes toolsets in all the targets. This recurses into condition entries
+# since they can contain toolsets as well.
+def ProcessToolsetsInDict(data):
+  if 'targets' in data:
+    target_list = data['targets']
+    new_target_list = []
+    for target in target_list:
+      # If this target already has an explicit 'toolset', and no 'toolsets'
+      # list, don't modify it further.
+      if 'toolset' in target and 'toolsets' not in target:
+        new_target_list.append(target)
+        continue
+      if multiple_toolsets:
+        toolsets = target.get('toolsets', ['target'])
+      else:
+        toolsets = ['target']
+      # Make sure this 'toolsets' definition is only processed once.
+      if 'toolsets' in target:
+        del target['toolsets']
+      if len(toolsets) > 0:
+        # Optimization: only do copies if more than one toolset is specified.
+        for build in toolsets[1:]:
+          new_target = copy.deepcopy(target)
+          new_target['toolset'] = build
+          new_target_list.append(new_target)
+        target['toolset'] = toolsets[0]
+        new_target_list.append(target)
+    data['targets'] = new_target_list
+  if 'conditions' in data:
+    for condition in data['conditions']:
+      if isinstance(condition, list):
+        for condition_dict in condition[1:]:
+          ProcessToolsetsInDict(condition_dict)
+
+
+# TODO(mark): I don't love this name.  It just means that it's going to load
+# a build file that contains targets and is expected to provide a targets dict
+# that contains the targets...
+def LoadTargetBuildFile(build_file_path, data, aux_data, variables, includes,
+                        depth, check, load_dependencies):
+  # If depth is set, predefine the DEPTH variable to be a relative path from
+  # this build file's directory to the directory identified by depth.
+  if depth:
+    # TODO(dglazkov) The backslash/forward-slash replacement at the end is a
+    # temporary measure. This should really be addressed by keeping all paths
+    # in POSIX until actual project generation.
+    d = gyp.common.RelativePath(depth, os.path.dirname(build_file_path))
+    if d == '':
+      variables['DEPTH'] = '.'
+    else:
+      variables['DEPTH'] = d.replace('\\', '/')
+
+  if build_file_path in data['target_build_files']:
+    # Already loaded.
+    return False
+  data['target_build_files'].add(build_file_path)
+
+  gyp.DebugOutput(gyp.DEBUG_INCLUDES,
+                  "Loading Target Build File '%s'", build_file_path)
+
+  build_file_data = LoadOneBuildFile(build_file_path, data, aux_data, variables,
+                                     includes, True, check)
+
+  # Store DEPTH for later use in generators.
+  build_file_data['_DEPTH'] = depth
+
+  # Set up the included_files key indicating which .gyp files contributed to
+  # this target dict.
+  if 'included_files' in build_file_data:
+    raise GypError(build_file_path + ' must not contain included_files key')
+
+  included = GetIncludedBuildFiles(build_file_path, aux_data)
+  build_file_data['included_files'] = []
+  for included_file in included:
+    # included_file is relative to the current directory, but it needs to
+    # be made relative to build_file_path's directory.
+    included_relative = \
+        gyp.common.RelativePath(included_file,
+                                os.path.dirname(build_file_path))
+    build_file_data['included_files'].append(included_relative)
+
+  # Do a first round of toolsets expansion so that conditions can be defined
+  # per toolset.
+  ProcessToolsetsInDict(build_file_data)
+
+  # Apply "pre"/"early" variable expansions and condition evaluations.
+  ProcessVariablesAndConditionsInDict(
+      build_file_data, PHASE_EARLY, variables, build_file_path)
+
+  # Since some toolsets might have been defined conditionally, perform
+  # a second round of toolsets expansion now.
+  ProcessToolsetsInDict(build_file_data)
+
+  # Look at each project's target_defaults dict, and merge settings into
+  # targets.
+  if 'target_defaults' in build_file_data:
+    if 'targets' not in build_file_data:
+      raise GypError("Unable to find targets in build file %s" %
+                     build_file_path)
+
+    index = 0
+    while index < len(build_file_data['targets']):
+      # This procedure needs to give the impression that target_defaults is
+      # used as defaults, and the individual targets inherit from that.
+      # The individual targets need to be merged into the defaults.  Make
+      # a deep copy of the defaults for each target, merge the target dict
+      # as found in the input file into that copy, and then hook up the
+      # copy with the target-specific data merged into it as the replacement
+      # target dict.
+      old_target_dict = build_file_data['targets'][index]
+      new_target_dict = copy.deepcopy(build_file_data['target_defaults'])
+      MergeDicts(new_target_dict, old_target_dict,
+                 build_file_path, build_file_path)
+      build_file_data['targets'][index] = new_target_dict
+      index += 1
+
+    # No longer needed.
+    del build_file_data['target_defaults']
+
+  # Look for dependencies.  This means that dependency resolution occurs
+  # after "pre" conditionals and variable expansion, but before "post" -
+  # in other words, you can't put a "dependencies" section inside a "post"
+  # conditional within a target.
+
+  dependencies = []
+  if 'targets' in build_file_data:
+    for target_dict in build_file_data['targets']:
+      if 'dependencies' not in target_dict:
+        continue
+      for dependency in target_dict['dependencies']:
+        dependencies.append(
+            gyp.common.ResolveTarget(build_file_path, dependency, None)[0])
+
+  if load_dependencies:
+    for dependency in dependencies:
+      try:
+        LoadTargetBuildFile(dependency, data, aux_data, variables,
+                            includes, depth, check, load_dependencies)
+      except Exception, e:
+        gyp.common.ExceptionAppend(
+          e, 'while loading dependencies of %s' % build_file_path)
+        raise
+  else:
+    return (build_file_path, dependencies)
+
+
+def CallLoadTargetBuildFile(global_flags,
+                            build_file_path, data,
+                            aux_data, variables,
+                            includes, depth, check,
+                            generator_input_info):
+  """Wrapper around LoadTargetBuildFile for parallel processing.
+
+     This wrapper is used when LoadTargetBuildFile is executed in
+     a worker process.
+  """
+
+  try:
+    signal.signal(signal.SIGINT, signal.SIG_IGN)
+
+    # Apply globals so that the worker process behaves the same.
+    for key, value in global_flags.iteritems():
+      globals()[key] = value
+
+    # Save the keys so we can return data that changed.
+    data_keys = set(data)
+    aux_data_keys = set(aux_data)
+
+    SetGeneratorGlobals(generator_input_info)
+    result = LoadTargetBuildFile(build_file_path, data,
+                                 aux_data, variables,
+                                 includes, depth, check, False)
+    if not result:
+      return result
+
+    (build_file_path, dependencies) = result
+
+    data_out = {}
+    for key in data:
+      if key == 'target_build_files':
+        continue
+      if key not in data_keys:
+        data_out[key] = data[key]
+    aux_data_out = {}
+    for key in aux_data:
+      if key not in aux_data_keys:
+        aux_data_out[key] = aux_data[key]
+
+    # This gets serialized and sent back to the main process via a pipe.
+    # It's handled in LoadTargetBuildFileCallback.
+    return (build_file_path,
+            data_out,
+            aux_data_out,
+            dependencies)
+  except GypError, e:
+    sys.stderr.write("gyp: %s\n" % e)
+    return None
+  except Exception, e:
+    print >>sys.stderr, 'Exception:', e
+    print >>sys.stderr, traceback.format_exc()
+    return None
+
+
+class ParallelProcessingError(Exception):
+  pass
+
+
+class ParallelState(object):
+  """Class to keep track of state when processing input files in parallel.
+
+  If build files are loaded in parallel, use this to keep track of
+  state during farming out and processing parallel jobs. It's stored
+  in a global so that the callback function can have access to it.
+  """
+
+  def __init__(self):
+    # The multiprocessing pool.
+    self.pool = None
+    # The condition variable used to protect this object and notify
+    # the main loop when there might be more data to process.
+    self.condition = None
+    # The "data" dict that was passed to LoadTargetBuildFileParallel
+    self.data = None
+    # The "aux_data" dict that was passed to LoadTargetBuildFileParallel
+    self.aux_data = None
+    # The number of parallel calls outstanding; decremented when a response
+    # was received.
+    self.pending = 0
+    # The set of all build files that have been scheduled, so we don't
+    # schedule the same one twice.
+    self.scheduled = set()
+    # A list of dependency build file paths that haven't been scheduled yet.
+    self.dependencies = []
+    # Flag to indicate if there was an error in a child process.
+    self.error = False
+
+  def LoadTargetBuildFileCallback(self, result):
+    """Handle the results of running LoadTargetBuildFile in another process.
+    """
+    self.condition.acquire()
+    if not result:
+      self.error = True
+      self.condition.notify()
+      self.condition.release()
+      return
+    (build_file_path0, data0, aux_data0, dependencies0) = result
+    self.data['target_build_files'].add(build_file_path0)
+    for key in data0:
+      self.data[key] = data0[key]
+    for key in aux_data0:
+      self.aux_data[key] = aux_data0[key]
+    for new_dependency in dependencies0:
+      if new_dependency not in self.scheduled:
+        self.scheduled.add(new_dependency)
+        self.dependencies.append(new_dependency)
+    self.pending -= 1
+    self.condition.notify()
+    self.condition.release()
+
+
+def LoadTargetBuildFilesParallel(build_files, data, aux_data,
+                                 variables, includes, depth, check,
+                                 generator_input_info):
+  parallel_state = ParallelState()
+  parallel_state.condition = threading.Condition()
+  # Make copies of the build_files argument that we can modify while working.
+  parallel_state.dependencies = list(build_files)
+  parallel_state.scheduled = set(build_files)
+  parallel_state.pending = 0
+  parallel_state.data = data
+  parallel_state.aux_data = aux_data
+
+  try:
+    parallel_state.condition.acquire()
+    while parallel_state.dependencies or parallel_state.pending:
+      if parallel_state.error:
+        break
+      if not parallel_state.dependencies:
+        parallel_state.condition.wait()
+        continue
+
+      dependency = parallel_state.dependencies.pop()
+
+      parallel_state.pending += 1
+      data_in = {}
+      data_in['target_build_files'] = data['target_build_files']
+      aux_data_in = {}
+      global_flags = {
+        'path_sections': globals()['path_sections'],
+        'non_configuration_keys': globals()['non_configuration_keys'],
+        'multiple_toolsets': globals()['multiple_toolsets']}
+
+      if not parallel_state.pool:
+        parallel_state.pool = multiprocessing.Pool(8)
+      parallel_state.pool.apply_async(
+          CallLoadTargetBuildFile,
+          args = (global_flags, dependency,
+                  data_in, aux_data_in,
+                  variables, includes, depth, check, generator_input_info),
+          callback = parallel_state.LoadTargetBuildFileCallback)
+  except KeyboardInterrupt, e:
+    parallel_state.pool.terminate()
+    raise e
+
+  parallel_state.condition.release()
+
+  parallel_state.pool.close()
+  parallel_state.pool.join()
+  parallel_state.pool = None
+
+  if parallel_state.error:
+    sys.exit(1)
+
+# Look for the bracket that matches the first bracket seen in a
+# string, and return the start and end as a tuple.  For example, if
+# the input is something like "<(foo <(bar)) blah", then it would
+# return (1, 13), indicating the entire string except for the leading
+# "<" and trailing " blah".
+LBRACKETS= set('{[(')
+BRACKETS = {'}': '{', ']': '[', ')': '('}
+def FindEnclosingBracketGroup(input_str):
+  stack = []
+  start = -1
+  for index, char in enumerate(input_str):
+    if char in LBRACKETS:
+      stack.append(char)
+      if start == -1:
+        start = index
+    elif char in BRACKETS:
+      if not stack:
+        return (-1, -1)
+      if stack.pop() != BRACKETS[char]:
+        return (-1, -1)
+      if not stack:
+        return (start, index + 1)
+  return (-1, -1)
+
+
+canonical_int_re = re.compile('(0|-?[1-9][0-9]*)$')
+
+
+def IsStrCanonicalInt(string):
+  """Returns True if |string| is in its canonical integer form.
+
+  The canonical form is such that str(int(string)) == string.
+  """
+  return isinstance(string, str) and canonical_int_re.match(string)
+
+
+# This matches things like "<(asdf)", "<!(cmd)", "<!@(cmd)", "<|(list)",
+# "<!interpreter(arguments)", "<([list])", and even "<([)" and "<(<())".
+# In the last case, the inner "<()" is captured in match['content'].
+early_variable_re = re.compile(
+    '(?P<replace>(?P<type><(?:(?:!?@?)|\|)?)'
+    '(?P<command_string>[-a-zA-Z0-9_.]+)?'
+    '\((?P<is_array>\s*\[?)'
+    '(?P<content>.*?)(\]?)\))')
+
+# This matches the same as early_variable_re, but with '>' instead of '<'.
+late_variable_re = re.compile(
+    '(?P<replace>(?P<type>>(?:(?:!?@?)|\|)?)'
+    '(?P<command_string>[-a-zA-Z0-9_.]+)?'
+    '\((?P<is_array>\s*\[?)'
+    '(?P<content>.*?)(\]?)\))')
+
+# This matches the same as early_variable_re, but with '^' instead of '<'.
+latelate_variable_re = re.compile(
+    '(?P<replace>(?P<type>[\^](?:(?:!?@?)|\|)?)'
+    '(?P<command_string>[-a-zA-Z0-9_.]+)?'
+    '\((?P<is_array>\s*\[?)'
+    '(?P<content>.*?)(\]?)\))')
+
+# Global cache of results from running commands so they don't have to be run
+# more then once.
+cached_command_results = {}
+
+
+def FixupPlatformCommand(cmd):
+  if sys.platform == 'win32':
+    if type(cmd) == list:
+      cmd = [re.sub('^cat ', 'type ', cmd[0])] + cmd[1:]
+    else:
+      cmd = re.sub('^cat ', 'type ', cmd)
+  return cmd
+
+
+PHASE_EARLY = 0
+PHASE_LATE = 1
+PHASE_LATELATE = 2
+
+
+def ExpandVariables(input, phase, variables, build_file):
+  # Look for the pattern that gets expanded into variables
+  if phase == PHASE_EARLY:
+    variable_re = early_variable_re
+    expansion_symbol = '<'
+  elif phase == PHASE_LATE:
+    variable_re = late_variable_re
+    expansion_symbol = '>'
+  elif phase == PHASE_LATELATE:
+    variable_re = latelate_variable_re
+    expansion_symbol = '^'
+  else:
+    assert False
+
+  input_str = str(input)
+  if IsStrCanonicalInt(input_str):
+    return int(input_str)
+
+  # Do a quick scan to determine if an expensive regex search is warranted.
+  if expansion_symbol not in input_str:
+    return input_str
+
+  # Get the entire list of matches as a list of MatchObject instances.
+  # (using findall here would return strings instead of MatchObjects).
+  matches = list(variable_re.finditer(input_str))
+  if not matches:
+    return input_str
+
+  output = input_str
+  # Reverse the list of matches so that replacements are done right-to-left.
+  # That ensures that earlier replacements won't mess up the string in a
+  # way that causes later calls to find the earlier substituted text instead
+  # of what's intended for replacement.
+  matches.reverse()
+  for match_group in matches:
+    match = match_group.groupdict()
+    gyp.DebugOutput(gyp.DEBUG_VARIABLES, "Matches: %r", match)
+    # match['replace'] is the substring to look for, match['type']
+    # is the character code for the replacement type (< > <! >! <| >| <@
+    # >@ <!@ >!@), match['is_array'] contains a '[' for command
+    # arrays, and match['content'] is the name of the variable (< >)
+    # or command to run (<! >!). match['command_string'] is an optional
+    # command string. Currently, only 'pymod_do_main' is supported.
+
+    # run_command is true if a ! variant is used.
+    run_command = '!' in match['type']
+    command_string = match['command_string']
+
+    # file_list is true if a | variant is used.
+    file_list = '|' in match['type']
+
+    # Capture these now so we can adjust them later.
+    replace_start = match_group.start('replace')
+    replace_end = match_group.end('replace')
+
+    # Find the ending paren, and re-evaluate the contained string.
+    (c_start, c_end) = FindEnclosingBracketGroup(input_str[replace_start:])
+
+    # Adjust the replacement range to match the entire command
+    # found by FindEnclosingBracketGroup (since the variable_re
+    # probably doesn't match the entire command if it contained
+    # nested variables).
+    replace_end = replace_start + c_end
+
+    # Find the "real" replacement, matching the appropriate closing
+    # paren, and adjust the replacement start and end.
+    replacement = input_str[replace_start:replace_end]
+
+    # Figure out what the contents of the variable parens are.
+    contents_start = replace_start + c_start + 1
+    contents_end = replace_end - 1
+    contents = input_str[contents_start:contents_end]
+
+    # Do filter substitution now for <|().
+    # Admittedly, this is different than the evaluation order in other
+    # contexts. However, since filtration has no chance to run on <|(),
+    # this seems like the only obvious way to give them access to filters.
+    if file_list:
+      processed_variables = copy.deepcopy(variables)
+      ProcessListFiltersInDict(contents, processed_variables)
+      # Recurse to expand variables in the contents
+      contents = ExpandVariables(contents, phase,
+                                 processed_variables, build_file)
+    else:
+      # Recurse to expand variables in the contents
+      contents = ExpandVariables(contents, phase, variables, build_file)
+
+    # Strip off leading/trailing whitespace so that variable matches are
+    # simpler below (and because they are rarely needed).
+    contents = contents.strip()
+
+    # expand_to_list is true if an @ variant is used.  In that case,
+    # the expansion should result in a list.  Note that the caller
+    # is to be expecting a list in return, and not all callers do
+    # because not all are working in list context.  Also, for list
+    # expansions, there can be no other text besides the variable
+    # expansion in the input string.
+    expand_to_list = '@' in match['type'] and input_str == replacement
+
+    if run_command or file_list:
+      # Find the build file's directory, so commands can be run or file lists
+      # generated relative to it.
+      build_file_dir = os.path.dirname(build_file)
+      if build_file_dir == '' and not file_list:
+        # If build_file is just a leaf filename indicating a file in the
+        # current directory, build_file_dir might be an empty string.  Set
+        # it to None to signal to subprocess.Popen that it should run the
+        # command in the current directory.
+        build_file_dir = None
+
+    # Support <|(listfile.txt ...) which generates a file
+    # containing items from a gyp list, generated at gyp time.
+    # This works around actions/rules which have more inputs than will
+    # fit on the command line.
+    if file_list:
+      if type(contents) == list:
+        contents_list = contents
+      else:
+        contents_list = contents.split(' ')
+      replacement = contents_list[0]
+      if os.path.isabs(replacement):
+        raise GypError('| cannot handle absolute paths, got "%s"' % replacement)
+
+      if not generator_filelist_paths:
+        path = os.path.join(build_file_dir, replacement)
+      else:
+        if os.path.isabs(build_file_dir):
+          toplevel = generator_filelist_paths['toplevel']
+          rel_build_file_dir = gyp.common.RelativePath(build_file_dir, toplevel)
+        else:
+          rel_build_file_dir = build_file_dir
+        qualified_out_dir = generator_filelist_paths['qualified_out_dir']
+        path = os.path.join(qualified_out_dir, rel_build_file_dir, replacement)
+        gyp.common.EnsureDirExists(path)
+
+      replacement = gyp.common.RelativePath(path, build_file_dir)
+      f = gyp.common.WriteOnDiff(path)
+      for i in contents_list[1:]:
+        f.write('%s\n' % i)
+      f.close()
+
+    elif run_command:
+      use_shell = True
+      if match['is_array']:
+        contents = eval(contents)
+        use_shell = False
+
+      # Check for a cached value to avoid executing commands, or generating
+      # file lists more than once.
+      # TODO(http://code.google.com/p/gyp/issues/detail?id=112): It is
+      # possible that the command being invoked depends on the current
+      # directory. For that case the syntax needs to be extended so that the
+      # directory is also used in cache_key (it becomes a tuple).
+      # TODO(http://code.google.com/p/gyp/issues/detail?id=111): In theory,
+      # someone could author a set of GYP files where each time the command
+      # is invoked it produces different output by design. When the need
+      # arises, the syntax should be extended to support no caching off a
+      # command's output so it is run every time.
+      cache_key = str(contents)
+      cached_value = cached_command_results.get(cache_key, None)
+      if cached_value is None:
+        gyp.DebugOutput(gyp.DEBUG_VARIABLES,
+                        "Executing command '%s' in directory '%s'",
+                        contents, build_file_dir)
+
+        replacement = ''
+
+        if command_string == 'pymod_do_main':
+          # <!pymod_do_main(modulename param eters) loads |modulename| as a
+          # python module and then calls that module's DoMain() function,
+          # passing ["param", "eters"] as a single list argument. For modules
+          # that don't load quickly, this can be faster than
+          # <!(python modulename param eters). Do this in |build_file_dir|.
+          oldwd = os.getcwd()  # Python doesn't like os.open('.'): no fchdir.
+          if build_file_dir:  # build_file_dir may be None (see above).
+            os.chdir(build_file_dir)
+          try:
+
+            parsed_contents = shlex.split(contents)
+            try:
+              py_module = __import__(parsed_contents[0])
+            except ImportError as e:
+              raise GypError("Error importing pymod_do_main"
+                             "module (%s): %s" % (parsed_contents[0], e))
+            replacement = str(py_module.DoMain(parsed_contents[1:])).rstrip()
+          finally:
+            os.chdir(oldwd)
+          assert replacement != None
+        elif command_string:
+          raise GypError("Unknown command string '%s' in '%s'." %
+                         (command_string, contents))
+        else:
+          # Fix up command with platform specific workarounds.
+          contents = FixupPlatformCommand(contents)
+          p = subprocess.Popen(contents, shell=use_shell,
+                               stdout=subprocess.PIPE,
+                               stderr=subprocess.PIPE,
+                               stdin=subprocess.PIPE,
+                               cwd=build_file_dir)
+
+          p_stdout, p_stderr = p.communicate('')
+
+          if p.wait() != 0 or p_stderr:
+            sys.stderr.write(p_stderr)
+            # Simulate check_call behavior, since check_call only exists
+            # in python 2.5 and later.
+            raise GypError("Call to '%s' returned exit status %d." %
+                           (contents, p.returncode))
+          replacement = p_stdout.rstrip()
+
+        cached_command_results[cache_key] = replacement
+      else:
+        gyp.DebugOutput(gyp.DEBUG_VARIABLES,
+                        "Had cache value for command '%s' in directory '%s'",
+                        contents,build_file_dir)
+        replacement = cached_value
+
+    else:
+      if not contents in variables:
+        if contents[-1] in ['!', '/']:
+          # In order to allow cross-compiles (nacl) to happen more naturally,
+          # we will allow references to >(sources/) etc. to resolve to
+          # and empty list if undefined. This allows actions to:
+          # 'action!': [
+          #   '>@(_sources!)',
+          # ],
+          # 'action/': [
+          #   '>@(_sources/)',
+          # ],
+          replacement = []
+        else:
+          raise GypError('Undefined variable ' + contents +
+                         ' in ' + build_file)
+      else:
+        replacement = variables[contents]
+
+    if isinstance(replacement, list):
+      for item in replacement:
+        if (not contents[-1] == '/' and
+            not isinstance(item, str) and not isinstance(item, int)):
+          raise GypError('Variable ' + contents +
+                         ' must expand to a string or list of strings; ' +
+                         'list contains a ' +
+                         item.__class__.__name__)
+      # Run through the list and handle variable expansions in it.  Since
+      # the list is guaranteed not to contain dicts, this won't do anything
+      # with conditions sections.
+      ProcessVariablesAndConditionsInList(replacement, phase, variables,
+                                          build_file)
+    elif not isinstance(replacement, str) and \
+         not isinstance(replacement, int):
+          raise GypError('Variable ' + contents +
+                         ' must expand to a string or list of strings; ' +
+                         'found a ' + replacement.__class__.__name__)
+
+    if expand_to_list:
+      # Expanding in list context.  It's guaranteed that there's only one
+      # replacement to do in |input_str| and that it's this replacement.  See
+      # above.
+      if isinstance(replacement, list):
+        # If it's already a list, make a copy.
+        output = replacement[:]
+      else:
+        # Split it the same way sh would split arguments.
+        output = shlex.split(str(replacement))
+    else:
+      # Expanding in string context.
+      encoded_replacement = ''
+      if isinstance(replacement, list):
+        # When expanding a list into string context, turn the list items
+        # into a string in a way that will work with a subprocess call.
+        #
+        # TODO(mark): This isn't completely correct.  This should
+        # call a generator-provided function that observes the
+        # proper list-to-argument quoting rules on a specific
+        # platform instead of just calling the POSIX encoding
+        # routine.
+        encoded_replacement = gyp.common.EncodePOSIXShellList(replacement)
+      else:
+        encoded_replacement = replacement
+
+      output = output[:replace_start] + str(encoded_replacement) + \
+               output[replace_end:]
+    # Prepare for the next match iteration.
+    input_str = output
+
+  # Look for more matches now that we've replaced some, to deal with
+  # expanding local variables (variables defined in the same
+  # variables block as this one).
+  gyp.DebugOutput(gyp.DEBUG_VARIABLES, "Found output %r, recursing.", output)
+  if isinstance(output, list):
+    if output and isinstance(output[0], list):
+      # Leave output alone if it's a list of lists.
+      # We don't want such lists to be stringified.
+      pass
+    else:
+      new_output = []
+      for item in output:
+        new_output.append(
+            ExpandVariables(item, phase, variables, build_file))
+      output = new_output
+  else:
+    output = ExpandVariables(output, phase, variables, build_file)
+
+  # Convert all strings that are canonically-represented integers into integers.
+  if isinstance(output, list):
+    for index in xrange(0, len(output)):
+      if IsStrCanonicalInt(output[index]):
+        output[index] = int(output[index])
+  elif IsStrCanonicalInt(output):
+    output = int(output)
+
+  return output
+
+
+def ProcessConditionsInDict(the_dict, phase, variables, build_file):
+  # Process a 'conditions' or 'target_conditions' section in the_dict,
+  # depending on phase.
+  # early -> conditions
+  # late -> target_conditions
+  # latelate -> no conditions
+  #
+  # Each item in a conditions list consists of cond_expr, a string expression
+  # evaluated as the condition, and true_dict, a dict that will be merged into
+  # the_dict if cond_expr evaluates to true.  Optionally, a third item,
+  # false_dict, may be present.  false_dict is merged into the_dict if
+  # cond_expr evaluates to false.
+  #
+  # Any dict merged into the_dict will be recursively processed for nested
+  # conditionals and other expansions, also according to phase, immediately
+  # prior to being merged.
+
+  if phase == PHASE_EARLY:
+    conditions_key = 'conditions'
+  elif phase == PHASE_LATE:
+    conditions_key = 'target_conditions'
+  elif phase == PHASE_LATELATE:
+    return
+  else:
+    assert False
+
+  if not conditions_key in the_dict:
+    return
+
+  conditions_list = the_dict[conditions_key]
+  # Unhook the conditions list, it's no longer needed.
+  del the_dict[conditions_key]
+
+  for condition in conditions_list:
+    if not isinstance(condition, list):
+      raise GypError(conditions_key + ' must be a list')
+    if len(condition) != 2 and len(condition) != 3:
+      # It's possible that condition[0] won't work in which case this
+      # attempt will raise its own IndexError.  That's probably fine.
+      raise GypError(conditions_key + ' ' + condition[0] +
+                     ' must be length 2 or 3, not ' + str(len(condition)))
+
+    [cond_expr, true_dict] = condition[0:2]
+    false_dict = None
+    if len(condition) == 3:
+      false_dict = condition[2]
+
+    # Do expansions on the condition itself.  Since the conditon can naturally
+    # contain variable references without needing to resort to GYP expansion
+    # syntax, this is of dubious value for variables, but someone might want to
+    # use a command expansion directly inside a condition.
+    cond_expr_expanded = ExpandVariables(cond_expr, phase, variables,
+                                         build_file)
+    if not isinstance(cond_expr_expanded, str) and \
+       not isinstance(cond_expr_expanded, int):
+      raise ValueError, \
+            'Variable expansion in this context permits str and int ' + \
+            'only, found ' + expanded.__class__.__name__
+
+    try:
+      ast_code = compile(cond_expr_expanded, '<string>', 'eval')
+
+      if eval(ast_code, {'__builtins__': None}, variables):
+        merge_dict = true_dict
+      else:
+        merge_dict = false_dict
+    except SyntaxError, e:
+      syntax_error = SyntaxError('%s while evaluating condition \'%s\' in %s '
+                                 'at character %d.' %
+                                 (str(e.args[0]), e.text, build_file, e.offset),
+                                 e.filename, e.lineno, e.offset, e.text)
+      raise syntax_error
+    except NameError, e:
+      gyp.common.ExceptionAppend(e, 'while evaluating condition \'%s\' in %s' %
+                                 (cond_expr_expanded, build_file))
+      raise GypError(e)
+
+    if merge_dict != None:
+      # Expand variables and nested conditinals in the merge_dict before
+      # merging it.
+      ProcessVariablesAndConditionsInDict(merge_dict, phase,
+                                          variables, build_file)
+
+      MergeDicts(the_dict, merge_dict, build_file, build_file)
+
+
+def LoadAutomaticVariablesFromDict(variables, the_dict):
+  # Any keys with plain string values in the_dict become automatic variables.
+  # The variable name is the key name with a "_" character prepended.
+  for key, value in the_dict.iteritems():
+    if isinstance(value, str) or isinstance(value, int) or \
+       isinstance(value, list):
+      variables['_' + key] = value
+
+
+def LoadVariablesFromVariablesDict(variables, the_dict, the_dict_key):
+  # Any keys in the_dict's "variables" dict, if it has one, becomes a
+  # variable.  The variable name is the key name in the "variables" dict.
+  # Variables that end with the % character are set only if they are unset in
+  # the variables dict.  the_dict_key is the name of the key that accesses
+  # the_dict in the_dict's parent dict.  If the_dict's parent is not a dict
+  # (it could be a list or it could be parentless because it is a root dict),
+  # the_dict_key will be None.
+  for key, value in the_dict.get('variables', {}).iteritems():
+    if not isinstance(value, str) and not isinstance(value, int) and \
+       not isinstance(value, list):
+      continue
+
+    if key.endswith('%'):
+      variable_name = key[:-1]
+      if variable_name in variables:
+        # If the variable is already set, don't set it.
+        continue
+      if the_dict_key is 'variables' and variable_name in the_dict:
+        # If the variable is set without a % in the_dict, and the_dict is a
+        # variables dict (making |variables| a varaibles sub-dict of a
+        # variables dict), use the_dict's definition.
+        value = the_dict[variable_name]
+    else:
+      variable_name = key
+
+    variables[variable_name] = value
+
+
+def ProcessVariablesAndConditionsInDict(the_dict, phase, variables_in,
+                                        build_file, the_dict_key=None):
+  """Handle all variable and command expansion and conditional evaluation.
+
+  This function is the public entry point for all variable expansions and
+  conditional evaluations.  The variables_in dictionary will not be modified
+  by this function.
+  """
+
+  # Make a copy of the variables_in dict that can be modified during the
+  # loading of automatics and the loading of the variables dict.
+  variables = variables_in.copy()
+  LoadAutomaticVariablesFromDict(variables, the_dict)
+
+  if 'variables' in the_dict:
+    # Make sure all the local variables are added to the variables
+    # list before we process them so that you can reference one
+    # variable from another.  They will be fully expanded by recursion
+    # in ExpandVariables.
+    for key, value in the_dict['variables'].iteritems():
+      variables[key] = value
+
+    # Handle the associated variables dict first, so that any variable
+    # references within can be resolved prior to using them as variables.
+    # Pass a copy of the variables dict to avoid having it be tainted.
+    # Otherwise, it would have extra automatics added for everything that
+    # should just be an ordinary variable in this scope.
+    ProcessVariablesAndConditionsInDict(the_dict['variables'], phase,
+                                        variables, build_file, 'variables')
+
+  LoadVariablesFromVariablesDict(variables, the_dict, the_dict_key)
+
+  for key, value in the_dict.iteritems():
+    # Skip "variables", which was already processed if present.
+    if key != 'variables' and isinstance(value, str):
+      expanded = ExpandVariables(value, phase, variables, build_file)
+      if not isinstance(expanded, str) and not isinstance(expanded, int):
+        raise ValueError, \
+              'Variable expansion in this context permits str and int ' + \
+              'only, found ' + expanded.__class__.__name__ + ' for ' + key
+      the_dict[key] = expanded
+
+  # Variable expansion may have resulted in changes to automatics.  Reload.
+  # TODO(mark): Optimization: only reload if no changes were made.
+  variables = variables_in.copy()
+  LoadAutomaticVariablesFromDict(variables, the_dict)
+  LoadVariablesFromVariablesDict(variables, the_dict, the_dict_key)
+
+  # Process conditions in this dict.  This is done after variable expansion
+  # so that conditions may take advantage of expanded variables.  For example,
+  # if the_dict contains:
+  #   {'type':       '<(library_type)',
+  #    'conditions': [['_type=="static_library"', { ... }]]},
+  # _type, as used in the condition, will only be set to the value of
+  # library_type if variable expansion is performed before condition
+  # processing.  However, condition processing should occur prior to recursion
+  # so that variables (both automatic and "variables" dict type) may be
+  # adjusted by conditions sections, merged into the_dict, and have the
+  # intended impact on contained dicts.
+  #
+  # This arrangement means that a "conditions" section containing a "variables"
+  # section will only have those variables effective in subdicts, not in
+  # the_dict.  The workaround is to put a "conditions" section within a
+  # "variables" section.  For example:
+  #   {'conditions': [['os=="mac"', {'variables': {'define': 'IS_MAC'}}]],
+  #    'defines':    ['<(define)'],
+  #    'my_subdict': {'defines': ['<(define)']}},
+  # will not result in "IS_MAC" being appended to the "defines" list in the
+  # current scope but would result in it being appended to the "defines" list
+  # within "my_subdict".  By comparison:
+  #   {'variables': {'conditions': [['os=="mac"', {'define': 'IS_MAC'}]]},
+  #    'defines':    ['<(define)'],
+  #    'my_subdict': {'defines': ['<(define)']}},
+  # will append "IS_MAC" to both "defines" lists.
+
+  # Evaluate conditions sections, allowing variable expansions within them
+  # as well as nested conditionals.  This will process a 'conditions' or
+  # 'target_conditions' section, perform appropriate merging and recursive
+  # conditional and variable processing, and then remove the conditions section
+  # from the_dict if it is present.
+  ProcessConditionsInDict(the_dict, phase, variables, build_file)
+
+  # Conditional processing may have resulted in changes to automatics or the
+  # variables dict.  Reload.
+  variables = variables_in.copy()
+  LoadAutomaticVariablesFromDict(variables, the_dict)
+  LoadVariablesFromVariablesDict(variables, the_dict, the_dict_key)
+
+  # Recurse into child dicts, or process child lists which may result in
+  # further recursion into descendant dicts.
+  for key, value in the_dict.iteritems():
+    # Skip "variables" and string values, which were already processed if
+    # present.
+    if key == 'variables' or isinstance(value, str):
+      continue
+    if isinstance(value, dict):
+      # Pass a copy of the variables dict so that subdicts can't influence
+      # parents.
+      ProcessVariablesAndConditionsInDict(value, phase, variables,
+                                          build_file, key)
+    elif isinstance(value, list):
+      # The list itself can't influence the variables dict, and
+      # ProcessVariablesAndConditionsInList will make copies of the variables
+      # dict if it needs to pass it to something that can influence it.  No
+      # copy is necessary here.
+      ProcessVariablesAndConditionsInList(value, phase, variables,
+                                          build_file)
+    elif not isinstance(value, int):
+      raise TypeError, 'Unknown type ' + value.__class__.__name__ + \
+                       ' for ' + key
+
+
+def ProcessVariablesAndConditionsInList(the_list, phase, variables,
+                                        build_file):
+  # Iterate using an index so that new values can be assigned into the_list.
+  index = 0
+  while index < len(the_list):
+    item = the_list[index]
+    if isinstance(item, dict):
+      # Make a copy of the variables dict so that it won't influence anything
+      # outside of its own scope.
+      ProcessVariablesAndConditionsInDict(item, phase, variables, build_file)
+    elif isinstance(item, list):
+      ProcessVariablesAndConditionsInList(item, phase, variables, build_file)
+    elif isinstance(item, str):
+      expanded = ExpandVariables(item, phase, variables, build_file)
+      if isinstance(expanded, str) or isinstance(expanded, int):
+        the_list[index] = expanded
+      elif isinstance(expanded, list):
+        the_list[index:index+1] = expanded
+        index += len(expanded)
+
+        # index now identifies the next item to examine.  Continue right now
+        # without falling into the index increment below.
+        continue
+      else:
+        raise ValueError, \
+              'Variable expansion in this context permits strings and ' + \
+              'lists only, found ' + expanded.__class__.__name__ + ' at ' + \
+              index
+    elif not isinstance(item, int):
+      raise TypeError, 'Unknown type ' + item.__class__.__name__ + \
+                       ' at index ' + index
+    index = index + 1
+
+
+def BuildTargetsDict(data):
+  """Builds a dict mapping fully-qualified target names to their target dicts.
+
+  |data| is a dict mapping loaded build files by pathname relative to the
+  current directory.  Values in |data| are build file contents.  For each
+  |data| value with a "targets" key, the value of the "targets" key is taken
+  as a list containing target dicts.  Each target's fully-qualified name is
+  constructed from the pathname of the build file (|data| key) and its
+  "target_name" property.  These fully-qualified names are used as the keys
+  in the returned dict.  These keys provide access to the target dicts,
+  the dicts in the "targets" lists.
+  """
+
+  targets = {}
+  for build_file in data['target_build_files']:
+    for target in data[build_file].get('targets', []):
+      target_name = gyp.common.QualifiedTarget(build_file,
+                                               target['target_name'],
+                                               target['toolset'])
+      if target_name in targets:
+        raise GypError('Duplicate target definitions for ' + target_name)
+      targets[target_name] = target
+
+  return targets
+
+
+def QualifyDependencies(targets):
+  """Make dependency links fully-qualified relative to the current directory.
+
+  |targets| is a dict mapping fully-qualified target names to their target
+  dicts.  For each target in this dict, keys known to contain dependency
+  links are examined, and any dependencies referenced will be rewritten
+  so that they are fully-qualified and relative to the current directory.
+  All rewritten dependencies are suitable for use as keys to |targets| or a
+  similar dict.
+  """
+
+  all_dependency_sections = [dep + op
+                             for dep in dependency_sections
+                             for op in ('', '!', '/')]
+
+  for target, target_dict in targets.iteritems():
+    target_build_file = gyp.common.BuildFile(target)
+    toolset = target_dict['toolset']
+    for dependency_key in all_dependency_sections:
+      dependencies = target_dict.get(dependency_key, [])
+      for index in xrange(0, len(dependencies)):
+        dep_file, dep_target, dep_toolset = gyp.common.ResolveTarget(
+            target_build_file, dependencies[index], toolset)
+        if not multiple_toolsets:
+          # Ignore toolset specification in the dependency if it is specified.
+          dep_toolset = toolset
+        dependency = gyp.common.QualifiedTarget(dep_file,
+                                                dep_target,
+                                                dep_toolset)
+        dependencies[index] = dependency
+
+        # Make sure anything appearing in a list other than "dependencies" also
+        # appears in the "dependencies" list.
+        if dependency_key != 'dependencies' and \
+           dependency not in target_dict['dependencies']:
+          raise GypError('Found ' + dependency + ' in ' + dependency_key +
+                         ' of ' + target + ', but not in dependencies')
+
+
+def ExpandWildcardDependencies(targets, data):
+  """Expands dependencies specified as build_file:*.
+
+  For each target in |targets|, examines sections containing links to other
+  targets.  If any such section contains a link of the form build_file:*, it
+  is taken as a wildcard link, and is expanded to list each target in
+  build_file.  The |data| dict provides access to build file dicts.
+
+  Any target that does not wish to be included by wildcard can provide an
+  optional "suppress_wildcard" key in its target dict.  When present and
+  true, a wildcard dependency link will not include such targets.
+
+  All dependency names, including the keys to |targets| and the values in each
+  dependency list, must be qualified when this function is called.
+  """
+
+  for target, target_dict in targets.iteritems():
+    toolset = target_dict['toolset']
+    target_build_file = gyp.common.BuildFile(target)
+    for dependency_key in dependency_sections:
+      dependencies = target_dict.get(dependency_key, [])
+
+      # Loop this way instead of "for dependency in" or "for index in xrange"
+      # because the dependencies list will be modified within the loop body.
+      index = 0
+      while index < len(dependencies):
+        (dependency_build_file, dependency_target, dependency_toolset) = \
+            gyp.common.ParseQualifiedTarget(dependencies[index])
+        if dependency_target != '*' and dependency_toolset != '*':
+          # Not a wildcard.  Keep it moving.
+          index = index + 1
+          continue
+
+        if dependency_build_file == target_build_file:
+          # It's an error for a target to depend on all other targets in
+          # the same file, because a target cannot depend on itself.
+          raise GypError('Found wildcard in ' + dependency_key + ' of ' +
+                         target + ' referring to same build file')
+
+        # Take the wildcard out and adjust the index so that the next
+        # dependency in the list will be processed the next time through the
+        # loop.
+        del dependencies[index]
+        index = index - 1
+
+        # Loop through the targets in the other build file, adding them to
+        # this target's list of dependencies in place of the removed
+        # wildcard.
+        dependency_target_dicts = data[dependency_build_file]['targets']
+        for dependency_target_dict in dependency_target_dicts:
+          if int(dependency_target_dict.get('suppress_wildcard', False)):
+            continue
+          dependency_target_name = dependency_target_dict['target_name']
+          if (dependency_target != '*' and
+              dependency_target != dependency_target_name):
+            continue
+          dependency_target_toolset = dependency_target_dict['toolset']
+          if (dependency_toolset != '*' and
+              dependency_toolset != dependency_target_toolset):
+            continue
+          dependency = gyp.common.QualifiedTarget(dependency_build_file,
+                                                  dependency_target_name,
+                                                  dependency_target_toolset)
+          index = index + 1
+          dependencies.insert(index, dependency)
+
+        index = index + 1
+
+
+def Unify(l):
+  """Removes duplicate elements from l, keeping the first element."""
+  seen = {}
+  return [seen.setdefault(e, e) for e in l if e not in seen]
+
+
+def RemoveDuplicateDependencies(targets):
+  """Makes sure every dependency appears only once in all targets's dependency
+  lists."""
+  for target_name, target_dict in targets.iteritems():
+    for dependency_key in dependency_sections:
+      dependencies = target_dict.get(dependency_key, [])
+      if dependencies:
+        target_dict[dependency_key] = Unify(dependencies)
+
+
+def Filter(l, item):
+  """Removes item from l."""
+  res = {}
+  return [res.setdefault(e, e) for e in l if e != item]
+
+
+def RemoveSelfDependencies(targets):
+  """Remove self dependencies from targets that have the prune_self_dependency
+  variable set."""
+  for target_name, target_dict in targets.iteritems():
+    for dependency_key in dependency_sections:
+      dependencies = target_dict.get(dependency_key, [])
+      if dependencies:
+        for t in dependencies:
+          if t == target_name:
+            if targets[t].get('variables', {}).get('prune_self_dependency', 0):
+              target_dict[dependency_key] = Filter(dependencies, target_name)
+
+
+class DependencyGraphNode(object):
+  """
+
+  Attributes:
+    ref: A reference to an object that this DependencyGraphNode represents.
+    dependencies: List of DependencyGraphNodes on which this one depends.
+    dependents: List of DependencyGraphNodes that depend on this one.
+  """
+
+  class CircularException(GypError):
+    pass
+
+  def __init__(self, ref):
+    self.ref = ref
+    self.dependencies = []
+    self.dependents = []
+
+  def __repr__(self):
+    return '<DependencyGraphNode: %r>' % self.ref
+
+  def FlattenToList(self):
+    # flat_list is the sorted list of dependencies - actually, the list items
+    # are the "ref" attributes of DependencyGraphNodes.  Every target will
+    # appear in flat_list after all of its dependencies, and before all of its
+    # dependents.
+    flat_list = []
+
+    # in_degree_zeros is the list of DependencyGraphNodes that have no
+    # dependencies not in flat_list.  Initially, it is a copy of the children
+    # of this node, because when the graph was built, nodes with no
+    # dependencies were made implicit dependents of the root node.
+    in_degree_zeros = set(self.dependents[:])
+
+    while in_degree_zeros:
+      # Nodes in in_degree_zeros have no dependencies not in flat_list, so they
+      # can be appended to flat_list.  Take these nodes out of in_degree_zeros
+      # as work progresses, so that the next node to process from the list can
+      # always be accessed at a consistent position.
+      node = in_degree_zeros.pop()
+      flat_list.append(node.ref)
+
+      # Look at dependents of the node just added to flat_list.  Some of them
+      # may now belong in in_degree_zeros.
+      for node_dependent in node.dependents:
+        is_in_degree_zero = True
+        for node_dependent_dependency in node_dependent.dependencies:
+          if not node_dependent_dependency.ref in flat_list:
+            # The dependent one or more dependencies not in flat_list.  There
+            # will be more chances to add it to flat_list when examining
+            # it again as a dependent of those other dependencies, provided
+            # that there are no cycles.
+            is_in_degree_zero = False
+            break
+
+        if is_in_degree_zero:
+          # All of the dependent's dependencies are already in flat_list.  Add
+          # it to in_degree_zeros where it will be processed in a future
+          # iteration of the outer loop.
+          in_degree_zeros.add(node_dependent)
+
+    return flat_list
+
+  def FindCycles(self, path=None):
+    """
+    Returns a list of cycles in the graph, where each cycle is its own list.
+    """
+    if path is None:
+      path = [self]
+
+    results = []
+    for node in self.dependents:
+      if node in path:
+        cycle = [node]
+        for part in path:
+          cycle.append(part)
+          if part == node:
+            break
+        results.append(tuple(cycle))
+      else:
+        results.extend(node.FindCycles([node] + path))
+
+    return list(set(results))
+
+  def DirectDependencies(self, dependencies=None):
+    """Returns a list of just direct dependencies."""
+    if dependencies == None:
+      dependencies = []
+
+    for dependency in self.dependencies:
+      # Check for None, corresponding to the root node.
+      if dependency.ref != None and dependency.ref not in dependencies:
+        dependencies.append(dependency.ref)
+
+    return dependencies
+
+  def _AddImportedDependencies(self, targets, dependencies=None):
+    """Given a list of direct dependencies, adds indirect dependencies that
+    other dependencies have declared to export their settings.
+
+    This method does not operate on self.  Rather, it operates on the list
+    of dependencies in the |dependencies| argument.  For each dependency in
+    that list, if any declares that it exports the settings of one of its
+    own dependencies, those dependencies whose settings are "passed through"
+    are added to the list.  As new items are added to the list, they too will
+    be processed, so it is possible to import settings through multiple levels
+    of dependencies.
+
+    This method is not terribly useful on its own, it depends on being
+    "primed" with a list of direct dependencies such as one provided by
+    DirectDependencies.  DirectAndImportedDependencies is intended to be the
+    public entry point.
+    """
+
+    if dependencies == None:
+      dependencies = []
+
+    index = 0
+    while index < len(dependencies):
+      dependency = dependencies[index]
+      dependency_dict = targets[dependency]
+      # Add any dependencies whose settings should be imported to the list
+      # if not already present.  Newly-added items will be checked for
+      # their own imports when the list iteration reaches them.
+      # Rather than simply appending new items, insert them after the
+      # dependency that exported them.  This is done to more closely match
+      # the depth-first method used by DeepDependencies.
+      add_index = 1
+      for imported_dependency in \
+          dependency_dict.get('export_dependent_settings', []):
+        if imported_dependency not in dependencies:
+          dependencies.insert(index + add_index, imported_dependency)
+          add_index = add_index + 1
+      index = index + 1
+
+    return dependencies
+
+  def DirectAndImportedDependencies(self, targets, dependencies=None):
+    """Returns a list of a target's direct dependencies and all indirect
+    dependencies that a dependency has advertised settings should be exported
+    through the dependency for.
+    """
+
+    dependencies = self.DirectDependencies(dependencies)
+    return self._AddImportedDependencies(targets, dependencies)
+
+  def DeepDependencies(self, dependencies=None):
+    """Returns a list of all of a target's dependencies, recursively."""
+    if dependencies == None:
+      dependencies = []
+
+    for dependency in self.dependencies:
+      # Check for None, corresponding to the root node.
+      if dependency.ref != None and dependency.ref not in dependencies:
+        dependencies.append(dependency.ref)
+        dependency.DeepDependencies(dependencies)
+
+    return dependencies
+
+  def _LinkDependenciesInternal(self, targets, include_shared_libraries,
+                                dependencies=None, initial=True):
+    """Returns a list of dependency targets that are linked into this target.
+
+    This function has a split personality, depending on the setting of
+    |initial|.  Outside callers should always leave |initial| at its default
+    setting.
+
+    When adding a target to the list of dependencies, this function will
+    recurse into itself with |initial| set to False, to collect dependencies
+    that are linked into the linkable target for which the list is being built.
+
+    If |include_shared_libraries| is False, the resulting dependencies will not
+    include shared_library targets that are linked into this target.
+    """
+    if dependencies == None:
+      dependencies = []
+
+    # Check for None, corresponding to the root node.
+    if self.ref == None:
+      return dependencies
+
+    # It's kind of sucky that |targets| has to be passed into this function,
+    # but that's presently the easiest way to access the target dicts so that
+    # this function can find target types.
+
+    if 'target_name' not in targets[self.ref]:
+      raise GypError("Missing 'target_name' field in target.")
+
+    if 'type' not in targets[self.ref]:
+      raise GypError("Missing 'type' field in target %s" %
+                     targets[self.ref]['target_name'])
+
+    target_type = targets[self.ref]['type']
+
+    is_linkable = target_type in linkable_types
+
+    if initial and not is_linkable:
+      # If this is the first target being examined and it's not linkable,
+      # return an empty list of link dependencies, because the link
+      # dependencies are intended to apply to the target itself (initial is
+      # True) and this target won't be linked.
+      return dependencies
+
+    # Don't traverse 'none' targets if explicitly excluded.
+    if (target_type == 'none' and
+        not targets[self.ref].get('dependencies_traverse', True)):
+      if self.ref not in dependencies:
+        dependencies.append(self.ref)
+      return dependencies
+
+    # Executables and loadable modules are already fully and finally linked.
+    # Nothing else can be a link dependency of them, there can only be
+    # dependencies in the sense that a dependent target might run an
+    # executable or load the loadable_module.
+    if not initial and target_type in ('executable', 'loadable_module'):
+      return dependencies
+
+    # Shared libraries are already fully linked.  They should only be included
+    # in |dependencies| when adjusting static library dependencies (in order to
+    # link against the shared_library's import lib), but should not be included
+    # in |dependencies| when propagating link_settings.
+    # The |include_shared_libraries| flag controls which of these two cases we
+    # are handling.
+    if (not initial and target_type == 'shared_library' and
+        not include_shared_libraries):
+      return dependencies
+
+    # The target is linkable, add it to the list of link dependencies.
+    if self.ref not in dependencies:
+      dependencies.append(self.ref)
+      if initial or not is_linkable:
+        # If this is a subsequent target and it's linkable, don't look any
+        # further for linkable dependencies, as they'll already be linked into
+        # this target linkable.  Always look at dependencies of the initial
+        # target, and always look at dependencies of non-linkables.
+        for dependency in self.dependencies:
+          dependency._LinkDependenciesInternal(targets,
+                                               include_shared_libraries,
+                                               dependencies, False)
+
+    return dependencies
+
+  def DependenciesForLinkSettings(self, targets):
+    """
+    Returns a list of dependency targets whose link_settings should be merged
+    into this target.
+    """
+
+    # TODO(sbaig) Currently, chrome depends on the bug that shared libraries'
+    # link_settings are propagated.  So for now, we will allow it, unless the
+    # 'allow_sharedlib_linksettings_propagation' flag is explicitly set to
+    # False.  Once chrome is fixed, we can remove this flag.
+    include_shared_libraries = \
+        targets[self.ref].get('allow_sharedlib_linksettings_propagation', True)
+    return self._LinkDependenciesInternal(targets, include_shared_libraries)
+
+  def DependenciesToLinkAgainst(self, targets):
+    """
+    Returns a list of dependency targets that are linked into this target.
+    """
+    return self._LinkDependenciesInternal(targets, True)
+
+
+def BuildDependencyList(targets):
+  # Create a DependencyGraphNode for each target.  Put it into a dict for easy
+  # access.
+  dependency_nodes = {}
+  for target, spec in targets.iteritems():
+    if target not in dependency_nodes:
+      dependency_nodes[target] = DependencyGraphNode(target)
+
+  # Set up the dependency links.  Targets that have no dependencies are treated
+  # as dependent on root_node.
+  root_node = DependencyGraphNode(None)
+  for target, spec in targets.iteritems():
+    target_node = dependency_nodes[target]
+    target_build_file = gyp.common.BuildFile(target)
+    dependencies = spec.get('dependencies')
+    if not dependencies:
+      target_node.dependencies = [root_node]
+      root_node.dependents.append(target_node)
+    else:
+      for dependency in dependencies:
+        dependency_node = dependency_nodes.get(dependency)
+        if not dependency_node:
+          raise GypError("Dependency '%s' not found while "
+                         "trying to load target %s" % (dependency, target))
+        target_node.dependencies.append(dependency_node)
+        dependency_node.dependents.append(target_node)
+
+  flat_list = root_node.FlattenToList()
+
+  # If there's anything left unvisited, there must be a circular dependency
+  # (cycle).  If you need to figure out what's wrong, look for elements of
+  # targets that are not in flat_list.
+  if len(flat_list) != len(targets):
+    raise DependencyGraphNode.CircularException(
+        'Some targets not reachable, cycle in dependency graph detected: ' +
+        ' '.join(set(flat_list) ^ set(targets)))
+
+  return [dependency_nodes, flat_list]
+
+
+def VerifyNoGYPFileCircularDependencies(targets):
+  # Create a DependencyGraphNode for each gyp file containing a target.  Put
+  # it into a dict for easy access.
+  dependency_nodes = {}
+  for target in targets.iterkeys():
+    build_file = gyp.common.BuildFile(target)
+    if not build_file in dependency_nodes:
+      dependency_nodes[build_file] = DependencyGraphNode(build_file)
+
+  # Set up the dependency links.
+  for target, spec in targets.iteritems():
+    build_file = gyp.common.BuildFile(target)
+    build_file_node = dependency_nodes[build_file]
+    target_dependencies = spec.get('dependencies', [])
+    for dependency in target_dependencies:
+      try:
+        dependency_build_file = gyp.common.BuildFile(dependency)
+      except GypError, e:
+        gyp.common.ExceptionAppend(
+            e, 'while computing dependencies of .gyp file %s' % build_file)
+        raise
+
+      if dependency_build_file == build_file:
+        # A .gyp file is allowed to refer back to itself.
+        continue
+      dependency_node = dependency_nodes.get(dependency_build_file)
+      if not dependency_node:
+        raise GypError("Dependancy '%s' not found" % dependency_build_file)
+      if dependency_node not in build_file_node.dependencies:
+        build_file_node.dependencies.append(dependency_node)
+        dependency_node.dependents.append(build_file_node)
+
+
+  # Files that have no dependencies are treated as dependent on root_node.
+  root_node = DependencyGraphNode(None)
+  for build_file_node in dependency_nodes.itervalues():
+    if len(build_file_node.dependencies) == 0:
+      build_file_node.dependencies.append(root_node)
+      root_node.dependents.append(build_file_node)
+
+  flat_list = root_node.FlattenToList()
+
+  # If there's anything left unvisited, there must be a circular dependency
+  # (cycle).
+  if len(flat_list) != len(dependency_nodes):
+    bad_files = []
+    for file in dependency_nodes.iterkeys():
+      if not file in flat_list:
+        bad_files.append(file)
+    common_path_prefix = os.path.commonprefix(dependency_nodes)
+    cycles = []
+    for cycle in root_node.FindCycles():
+      simplified_paths = []
+      for node in cycle:
+        assert(node.ref.startswith(common_path_prefix))
+        simplified_paths.append(node.ref[len(common_path_prefix):])
+      cycles.append('Cycle: %s' % ' -> '.join(simplified_paths))
+    raise DependencyGraphNode.CircularException, \
+        'Cycles in .gyp file dependency graph detected:\n' + '\n'.join(cycles)
+
+
+def DoDependentSettings(key, flat_list, targets, dependency_nodes):
+  # key should be one of all_dependent_settings, direct_dependent_settings,
+  # or link_settings.
+
+  for target in flat_list:
+    target_dict = targets[target]
+    build_file = gyp.common.BuildFile(target)
+
+    if key == 'all_dependent_settings':
+      dependencies = dependency_nodes[target].DeepDependencies()
+    elif key == 'direct_dependent_settings':
+      dependencies = \
+          dependency_nodes[target].DirectAndImportedDependencies(targets)
+    elif key == 'link_settings':
+      dependencies = \
+          dependency_nodes[target].DependenciesForLinkSettings(targets)
+    else:
+      raise GypError("DoDependentSettings doesn't know how to determine "
+                      'dependencies for ' + key)
+
+    for dependency in dependencies:
+      dependency_dict = targets[dependency]
+      if not key in dependency_dict:
+        continue
+      dependency_build_file = gyp.common.BuildFile(dependency)
+      MergeDicts(target_dict, dependency_dict[key],
+                 build_file, dependency_build_file)
+
+
+def AdjustStaticLibraryDependencies(flat_list, targets, dependency_nodes,
+                                    sort_dependencies):
+  # Recompute target "dependencies" properties.  For each static library
+  # target, remove "dependencies" entries referring to other static libraries,
+  # unless the dependency has the "hard_dependency" attribute set.  For each
+  # linkable target, add a "dependencies" entry referring to all of the
+  # target's computed list of link dependencies (including static libraries
+  # if no such entry is already present.
+  for target in flat_list:
+    target_dict = targets[target]
+    target_type = target_dict['type']
+
+    if target_type == 'static_library':
+      if not 'dependencies' in target_dict:
+        continue
+
+      target_dict['dependencies_original'] = target_dict.get(
+          'dependencies', [])[:]
+
+      # A static library should not depend on another static library unless
+      # the dependency relationship is "hard," which should only be done when
+      # a dependent relies on some side effect other than just the build
+      # product, like a rule or action output. Further, if a target has a
+      # non-hard dependency, but that dependency exports a hard dependency,
+      # the non-hard dependency can safely be removed, but the exported hard
+      # dependency must be added to the target to keep the same dependency
+      # ordering.
+      dependencies = \
+          dependency_nodes[target].DirectAndImportedDependencies(targets)
+      index = 0
+      while index < len(dependencies):
+        dependency = dependencies[index]
+        dependency_dict = targets[dependency]
+
+        # Remove every non-hard static library dependency and remove every
+        # non-static library dependency that isn't a direct dependency.
+        if (dependency_dict['type'] == 'static_library' and \
+            not dependency_dict.get('hard_dependency', False)) or \
+           (dependency_dict['type'] != 'static_library' and \
+            not dependency in target_dict['dependencies']):
+          # Take the dependency out of the list, and don't increment index
+          # because the next dependency to analyze will shift into the index
+          # formerly occupied by the one being removed.
+          del dependencies[index]
+        else:
+          index = index + 1
+
+      # Update the dependencies. If the dependencies list is empty, it's not
+      # needed, so unhook it.
+      if len(dependencies) > 0:
+        target_dict['dependencies'] = dependencies
+      else:
+        del target_dict['dependencies']
+
+    elif target_type in linkable_types:
+      # Get a list of dependency targets that should be linked into this
+      # target.  Add them to the dependencies list if they're not already
+      # present.
+
+      link_dependencies = \
+          dependency_nodes[target].DependenciesToLinkAgainst(targets)
+      for dependency in link_dependencies:
+        if dependency == target:
+          continue
+        if not 'dependencies' in target_dict:
+          target_dict['dependencies'] = []
+        if not dependency in target_dict['dependencies']:
+          target_dict['dependencies'].append(dependency)
+      # Sort the dependencies list in the order from dependents to dependencies.
+      # e.g. If A and B depend on C and C depends on D, sort them in A, B, C, D.
+      # Note: flat_list is already sorted in the order from dependencies to
+      # dependents.
+      if sort_dependencies and 'dependencies' in target_dict:
+        target_dict['dependencies'] = [dep for dep in reversed(flat_list)
+                                       if dep in target_dict['dependencies']]
+
+
+# Initialize this here to speed up MakePathRelative.
+exception_re = re.compile(r'''["']?[-/$<>^]''')
+
+
+def MakePathRelative(to_file, fro_file, item):
+  # If item is a relative path, it's relative to the build file dict that it's
+  # coming from.  Fix it up to make it relative to the build file dict that
+  # it's going into.
+  # Exception: any |item| that begins with these special characters is
+  # returned without modification.
+  #   /   Used when a path is already absolute (shortcut optimization;
+  #       such paths would be returned as absolute anyway)
+  #   $   Used for build environment variables
+  #   -   Used for some build environment flags (such as -lapr-1 in a
+  #       "libraries" section)
+  #   <   Used for our own variable and command expansions (see ExpandVariables)
+  #   >   Used for our own variable and command expansions (see ExpandVariables)
+  #   ^   Used for our own variable and command expansions (see ExpandVariables)
+  #
+  #   "/' Used when a value is quoted.  If these are present, then we
+  #       check the second character instead.
+  #
+  if to_file == fro_file or exception_re.match(item):
+    return item
+  else:
+    # TODO(dglazkov) The backslash/forward-slash replacement at the end is a
+    # temporary measure. This should really be addressed by keeping all paths
+    # in POSIX until actual project generation.
+    ret = os.path.normpath(os.path.join(
+        gyp.common.RelativePath(os.path.dirname(fro_file),
+                                os.path.dirname(to_file)),
+                                item)).replace('\\', '/')
+    if item[-1] == '/':
+      ret += '/'
+    return ret
+
+def MergeLists(to, fro, to_file, fro_file, is_paths=False, append=True):
+  # Python documentation recommends objects which do not support hash
+  # set this value to None. Python library objects follow this rule.
+  is_hashable = lambda val: val.__hash__
+
+  # If x is hashable, returns whether x is in s. Else returns whether x is in l.
+  def is_in_set_or_list(x, s, l):
+    if is_hashable(x):
+      return x in s
+    return x in l
+
+  prepend_index = 0
+
+  # Make membership testing of hashables in |to| (in particular, strings)
+  # faster.
+  hashable_to_set = set(x for x in to if is_hashable(x))
+  for item in fro:
+    singleton = False
+    if isinstance(item, str) or isinstance(item, int):
+      # The cheap and easy case.
+      if is_paths:
+        to_item = MakePathRelative(to_file, fro_file, item)
+      else:
+        to_item = item
+
+      if not isinstance(item, str) or not item.startswith('-'):
+        # Any string that doesn't begin with a "-" is a singleton - it can
+        # only appear once in a list, to be enforced by the list merge append
+        # or prepend.
+        singleton = True
+    elif isinstance(item, dict):
+      # Make a copy of the dictionary, continuing to look for paths to fix.
+      # The other intelligent aspects of merge processing won't apply because
+      # item is being merged into an empty dict.
+      to_item = {}
+      MergeDicts(to_item, item, to_file, fro_file)
+    elif isinstance(item, list):
+      # Recurse, making a copy of the list.  If the list contains any
+      # descendant dicts, path fixing will occur.  Note that here, custom
+      # values for is_paths and append are dropped; those are only to be
+      # applied to |to| and |fro|, not sublists of |fro|.  append shouldn't
+      # matter anyway because the new |to_item| list is empty.
+      to_item = []
+      MergeLists(to_item, item, to_file, fro_file)
+    else:
+      raise TypeError, \
+          'Attempt to merge list item of unsupported type ' + \
+          item.__class__.__name__
+
+    if append:
+      # If appending a singleton that's already in the list, don't append.
+      # This ensures that the earliest occurrence of the item will stay put.
+      if not singleton or not is_in_set_or_list(to_item, hashable_to_set, to):
+        to.append(to_item)
+        if is_hashable(to_item):
+          hashable_to_set.add(to_item)
+    else:
+      # If prepending a singleton that's already in the list, remove the
+      # existing instance and proceed with the prepend.  This ensures that the
+      # item appears at the earliest possible position in the list.
+      while singleton and to_item in to:
+        to.remove(to_item)
+
+      # Don't just insert everything at index 0.  That would prepend the new
+      # items to the list in reverse order, which would be an unwelcome
+      # surprise.
+      to.insert(prepend_index, to_item)
+      if is_hashable(to_item):
+        hashable_to_set.add(to_item)
+      prepend_index = prepend_index + 1
+
+
+def MergeDicts(to, fro, to_file, fro_file):
+  # I wanted to name the parameter "from" but it's a Python keyword...
+  for k, v in fro.iteritems():
+    # It would be nice to do "if not k in to: to[k] = v" but that wouldn't give
+    # copy semantics.  Something else may want to merge from the |fro| dict
+    # later, and having the same dict ref pointed to twice in the tree isn't
+    # what anyone wants considering that the dicts may subsequently be
+    # modified.
+    if k in to:
+      bad_merge = False
+      if isinstance(v, str) or isinstance(v, int):
+        if not (isinstance(to[k], str) or isinstance(to[k], int)):
+          bad_merge = True
+      elif v.__class__ != to[k].__class__:
+        bad_merge = True
+
+      if bad_merge:
+        raise TypeError, \
+            'Attempt to merge dict value of type ' + v.__class__.__name__ + \
+            ' into incompatible type ' + to[k].__class__.__name__ + \
+            ' for key ' + k
+    if isinstance(v, str) or isinstance(v, int):
+      # Overwrite the existing value, if any.  Cheap and easy.
+      is_path = IsPathSection(k)
+      if is_path:
+        to[k] = MakePathRelative(to_file, fro_file, v)
+      else:
+        to[k] = v
+    elif isinstance(v, dict):
+      # Recurse, guaranteeing copies will be made of objects that require it.
+      if not k in to:
+        to[k] = {}
+      MergeDicts(to[k], v, to_file, fro_file)
+    elif isinstance(v, list):
+      # Lists in dicts can be merged with different policies, depending on
+      # how the key in the "from" dict (k, the from-key) is written.
+      #
+      # If the from-key has          ...the to-list will have this action
+      # this character appended:...     applied when receiving the from-list:
+      #                           =  replace
+      #                           +  prepend
+      #                           ?  set, only if to-list does not yet exist
+      #                      (none)  append
+      #
+      # This logic is list-specific, but since it relies on the associated
+      # dict key, it's checked in this dict-oriented function.
+      ext = k[-1]
+      append = True
+      if ext == '=':
+        list_base = k[:-1]
+        lists_incompatible = [list_base, list_base + '?']
+        to[list_base] = []
+      elif ext == '+':
+        list_base = k[:-1]
+        lists_incompatible = [list_base + '=', list_base + '?']
+        append = False
+      elif ext == '?':
+        list_base = k[:-1]
+        lists_incompatible = [list_base, list_base + '=', list_base + '+']
+      else:
+        list_base = k
+        lists_incompatible = [list_base + '=', list_base + '?']
+
+      # Some combinations of merge policies appearing together are meaningless.
+      # It's stupid to replace and append simultaneously, for example.  Append
+      # and prepend are the only policies that can coexist.
+      for list_incompatible in lists_incompatible:
+        if list_incompatible in fro:
+          raise GypError('Incompatible list policies ' + k + ' and ' +
+                         list_incompatible)
+
+      if list_base in to:
+        if ext == '?':
+          # If the key ends in "?", the list will only be merged if it doesn't
+          # already exist.
+          continue
+        if not isinstance(to[list_base], list):
+          # This may not have been checked above if merging in a list with an
+          # extension character.
+          raise TypeError, \
+              'Attempt to merge dict value of type ' + v.__class__.__name__ + \
+              ' into incompatible type ' + to[list_base].__class__.__name__ + \
+              ' for key ' + list_base + '(' + k + ')'
+      else:
+        to[list_base] = []
+
+      # Call MergeLists, which will make copies of objects that require it.
+      # MergeLists can recurse back into MergeDicts, although this will be
+      # to make copies of dicts (with paths fixed), there will be no
+      # subsequent dict "merging" once entering a list because lists are
+      # always replaced, appended to, or prepended to.
+      is_paths = IsPathSection(list_base)
+      MergeLists(to[list_base], v, to_file, fro_file, is_paths, append)
+    else:
+      raise TypeError, \
+          'Attempt to merge dict value of unsupported type ' + \
+          v.__class__.__name__ + ' for key ' + k
+
+
+def MergeConfigWithInheritance(new_configuration_dict, build_file,
+                               target_dict, configuration, visited):
+  # Skip if previously visted.
+  if configuration in visited:
+    return
+
+  # Look at this configuration.
+  configuration_dict = target_dict['configurations'][configuration]
+
+  # Merge in parents.
+  for parent in configuration_dict.get('inherit_from', []):
+    MergeConfigWithInheritance(new_configuration_dict, build_file,
+                               target_dict, parent, visited + [configuration])
+
+  # Merge it into the new config.
+  MergeDicts(new_configuration_dict, configuration_dict,
+             build_file, build_file)
+
+  # Drop abstract.
+  if 'abstract' in new_configuration_dict:
+    del new_configuration_dict['abstract']
+
+
+def SetUpConfigurations(target, target_dict):
+  # key_suffixes is a list of key suffixes that might appear on key names.
+  # These suffixes are handled in conditional evaluations (for =, +, and ?)
+  # and rules/exclude processing (for ! and /).  Keys with these suffixes
+  # should be treated the same as keys without.
+  key_suffixes = ['=', '+', '?', '!', '/']
+
+  build_file = gyp.common.BuildFile(target)
+
+  # Provide a single configuration by default if none exists.
+  # TODO(mark): Signal an error if default_configurations exists but
+  # configurations does not.
+  if not 'configurations' in target_dict:
+    target_dict['configurations'] = {'Default': {}}
+  if not 'default_configuration' in target_dict:
+    concrete = [i for i in target_dict['configurations'].iterkeys()
+                if not target_dict['configurations'][i].get('abstract')]
+    target_dict['default_configuration'] = sorted(concrete)[0]
+
+  for configuration in target_dict['configurations'].keys():
+    old_configuration_dict = target_dict['configurations'][configuration]
+    # Skip abstract configurations (saves work only).
+    if old_configuration_dict.get('abstract'):
+      continue
+    # Configurations inherit (most) settings from the enclosing target scope.
+    # Get the inheritance relationship right by making a copy of the target
+    # dict.
+    new_configuration_dict = copy.deepcopy(target_dict)
+
+    # Take out the bits that don't belong in a "configurations" section.
+    # Since configuration setup is done before conditional, exclude, and rules
+    # processing, be careful with handling of the suffix characters used in
+    # those phases.
+    delete_keys = []
+    for key in new_configuration_dict:
+      key_ext = key[-1:]
+      if key_ext in key_suffixes:
+        key_base = key[:-1]
+      else:
+        key_base = key
+      if key_base in non_configuration_keys:
+        delete_keys.append(key)
+
+    for key in delete_keys:
+      del new_configuration_dict[key]
+
+    # Merge in configuration (with all its parents first).
+    MergeConfigWithInheritance(new_configuration_dict, build_file,
+                               target_dict, configuration, [])
+
+    # Put the new result back into the target dict as a configuration.
+    target_dict['configurations'][configuration] = new_configuration_dict
+
+  # Now drop all the abstract ones.
+  for configuration in target_dict['configurations'].keys():
+    old_configuration_dict = target_dict['configurations'][configuration]
+    if old_configuration_dict.get('abstract'):
+      del target_dict['configurations'][configuration]
+
+  # Now that all of the target's configurations have been built, go through
+  # the target dict's keys and remove everything that's been moved into a
+  # "configurations" section.
+  delete_keys = []
+  for key in target_dict:
+    key_ext = key[-1:]
+    if key_ext in key_suffixes:
+      key_base = key[:-1]
+    else:
+      key_base = key
+    if not key_base in non_configuration_keys:
+      delete_keys.append(key)
+  for key in delete_keys:
+    del target_dict[key]
+
+  # Check the configurations to see if they contain invalid keys.
+  for configuration in target_dict['configurations'].keys():
+    configuration_dict = target_dict['configurations'][configuration]
+    for key in configuration_dict.keys():
+      if key in invalid_configuration_keys:
+        raise GypError('%s not allowed in the %s configuration, found in '
+                       'target %s' % (key, configuration, target))
+
+
+
+def ProcessListFiltersInDict(name, the_dict):
+  """Process regular expression and exclusion-based filters on lists.
+
+  An exclusion list is in a dict key named with a trailing "!", like
+  "sources!".  Every item in such a list is removed from the associated
+  main list, which in this example, would be "sources".  Removed items are
+  placed into a "sources_excluded" list in the dict.
+
+  Regular expression (regex) filters are contained in dict keys named with a
+  trailing "/", such as "sources/" to operate on the "sources" list.  Regex
+  filters in a dict take the form:
+    'sources/': [ ['exclude', '_(linux|mac|win)\\.cc$'],
+                  ['include', '_mac\\.cc$'] ],
+  The first filter says to exclude all files ending in _linux.cc, _mac.cc, and
+  _win.cc.  The second filter then includes all files ending in _mac.cc that
+  are now or were once in the "sources" list.  Items matching an "exclude"
+  filter are subject to the same processing as would occur if they were listed
+  by name in an exclusion list (ending in "!").  Items matching an "include"
+  filter are brought back into the main list if previously excluded by an
+  exclusion list or exclusion regex filter.  Subsequent matching "exclude"
+  patterns can still cause items to be excluded after matching an "include".
+  """
+
+  # Look through the dictionary for any lists whose keys end in "!" or "/".
+  # These are lists that will be treated as exclude lists and regular
+  # expression-based exclude/include lists.  Collect the lists that are
+  # needed first, looking for the lists that they operate on, and assemble
+  # then into |lists|.  This is done in a separate loop up front, because
+  # the _included and _excluded keys need to be added to the_dict, and that
+  # can't be done while iterating through it.
+
+  lists = []
+  del_lists = []
+  for key, value in the_dict.iteritems():
+    operation = key[-1]
+    if operation != '!' and operation != '/':
+      continue
+
+    if not isinstance(value, list):
+      raise ValueError, name + ' key ' + key + ' must be list, not ' + \
+                        value.__class__.__name__
+
+    list_key = key[:-1]
+    if list_key not in the_dict:
+      # This happens when there's a list like "sources!" but no corresponding
+      # "sources" list.  Since there's nothing for it to operate on, queue up
+      # the "sources!" list for deletion now.
+      del_lists.append(key)
+      continue
+
+    if not isinstance(the_dict[list_key], list):
+      value = the_dict[list_key]
+      raise ValueError, name + ' key ' + list_key + \
+                        ' must be list, not ' + \
+                        value.__class__.__name__ + ' when applying ' + \
+                        {'!': 'exclusion', '/': 'regex'}[operation]
+
+    if not list_key in lists:
+      lists.append(list_key)
+
+  # Delete the lists that are known to be unneeded at this point.
+  for del_list in del_lists:
+    del the_dict[del_list]
+
+  for list_key in lists:
+    the_list = the_dict[list_key]
+
+    # Initialize the list_actions list, which is parallel to the_list.  Each
+    # item in list_actions identifies whether the corresponding item in
+    # the_list should be excluded, unconditionally preserved (included), or
+    # whether no exclusion or inclusion has been applied.  Items for which
+    # no exclusion or inclusion has been applied (yet) have value -1, items
+    # excluded have value 0, and items included have value 1.  Includes and
+    # excludes override previous actions.  All items in list_actions are
+    # initialized to -1 because no excludes or includes have been processed
+    # yet.
+    list_actions = list((-1,) * len(the_list))
+
+    exclude_key = list_key + '!'
+    if exclude_key in the_dict:
+      for exclude_item in the_dict[exclude_key]:
+        for index in xrange(0, len(the_list)):
+          if exclude_item == the_list[index]:
+            # This item matches the exclude_item, so set its action to 0
+            # (exclude).
+            list_actions[index] = 0
+
+      # The "whatever!" list is no longer needed, dump it.
+      del the_dict[exclude_key]
+
+    regex_key = list_key + '/'
+    if regex_key in the_dict:
+      for regex_item in the_dict[regex_key]:
+        [action, pattern] = regex_item
+        pattern_re = re.compile(pattern)
+
+        if action == 'exclude':
+          # This item matches an exclude regex, so set its value to 0 (exclude).
+          action_value = 0
+        elif action == 'include':
+          # This item matches an include regex, so set its value to 1 (include).
+          action_value = 1
+        else:
+          # This is an action that doesn't make any sense.
+          raise ValueError, 'Unrecognized action ' + action + ' in ' + name + \
+                            ' key ' + regex_key
+
+        for index in xrange(0, len(the_list)):
+          list_item = the_list[index]
+          if list_actions[index] == action_value:
+            # Even if the regex matches, nothing will change so continue (regex
+            # searches are expensive).
+            continue
+          if pattern_re.search(list_item):
+            # Regular expression match.
+            list_actions[index] = action_value
+
+      # The "whatever/" list is no longer needed, dump it.
+      del the_dict[regex_key]
+
+    # Add excluded items to the excluded list.
+    #
+    # Note that exclude_key ("sources!") is different from excluded_key
+    # ("sources_excluded").  The exclude_key list is input and it was already
+    # processed and deleted; the excluded_key list is output and it's about
+    # to be created.
+    excluded_key = list_key + '_excluded'
+    if excluded_key in the_dict:
+      raise GypError(name + ' key ' + excluded_key +
+                     ' must not be present prior '
+                     ' to applying exclusion/regex filters for ' + list_key)
+
+    excluded_list = []
+
+    # Go backwards through the list_actions list so that as items are deleted,
+    # the indices of items that haven't been seen yet don't shift.  That means
+    # that things need to be prepended to excluded_list to maintain them in the
+    # same order that they existed in the_list.
+    for index in xrange(len(list_actions) - 1, -1, -1):
+      if list_actions[index] == 0:
+        # Dump anything with action 0 (exclude).  Keep anything with action 1
+        # (include) or -1 (no include or exclude seen for the item).
+        excluded_list.insert(0, the_list[index])
+        del the_list[index]
+
+    # If anything was excluded, put the excluded list into the_dict at
+    # excluded_key.
+    if len(excluded_list) > 0:
+      the_dict[excluded_key] = excluded_list
+
+  # Now recurse into subdicts and lists that may contain dicts.
+  for key, value in the_dict.iteritems():
+    if isinstance(value, dict):
+      ProcessListFiltersInDict(key, value)
+    elif isinstance(value, list):
+      ProcessListFiltersInList(key, value)
+
+
+def ProcessListFiltersInList(name, the_list):
+  for item in the_list:
+    if isinstance(item, dict):
+      ProcessListFiltersInDict(name, item)
+    elif isinstance(item, list):
+      ProcessListFiltersInList(name, item)
+
+
+def ValidateTargetType(target, target_dict):
+  """Ensures the 'type' field on the target is one of the known types.
+
+  Arguments:
+    target: string, name of target.
+    target_dict: dict, target spec.
+
+  Raises an exception on error.
+  """
+  VALID_TARGET_TYPES = ('executable', 'loadable_module',
+                        'static_library', 'shared_library',
+                        'none')
+  target_type = target_dict.get('type', None)
+  if target_type not in VALID_TARGET_TYPES:
+    raise GypError("Target %s has an invalid target type '%s'.  "
+                   "Must be one of %s." %
+                   (target, target_type, '/'.join(VALID_TARGET_TYPES)))
+  if (target_dict.get('standalone_static_library', 0) and
+      not target_type == 'static_library'):
+    raise GypError('Target %s has type %s but standalone_static_library flag is'
+                   ' only valid for static_library type.' % (target,
+                                                             target_type))
+
+
+def ValidateSourcesInTarget(target, target_dict, build_file):
+  # TODO: Check if MSVC allows this for loadable_module targets.
+  if target_dict.get('type', None) not in ('static_library', 'shared_library'):
+    return
+  sources = target_dict.get('sources', [])
+  basenames = {}
+  for source in sources:
+    name, ext = os.path.splitext(source)
+    is_compiled_file = ext in [
+        '.c', '.cc', '.cpp', '.cxx', '.m', '.mm', '.s', '.S']
+    if not is_compiled_file:
+      continue
+    basename = os.path.basename(name)  # Don't include extension.
+    basenames.setdefault(basename, []).append(source)
+
+  error = ''
+  for basename, files in basenames.iteritems():
+    if len(files) > 1:
+      error += '  %s: %s\n' % (basename, ' '.join(files))
+
+  if error:
+    print('static library %s has several files with the same basename:\n' %
+          target + error + 'Some build systems, e.g. MSVC08, '
+          'cannot handle that.')
+    raise GypError('Duplicate basenames in sources section, see list above')
+
+
+def ValidateRulesInTarget(target, target_dict, extra_sources_for_rules):
+  """Ensures that the rules sections in target_dict are valid and consistent,
+  and determines which sources they apply to.
+
+  Arguments:
+    target: string, name of target.
+    target_dict: dict, target spec containing "rules" and "sources" lists.
+    extra_sources_for_rules: a list of keys to scan for rule matches in
+        addition to 'sources'.
+  """
+
+  # Dicts to map between values found in rules' 'rule_name' and 'extension'
+  # keys and the rule dicts themselves.
+  rule_names = {}
+  rule_extensions = {}
+
+  rules = target_dict.get('rules', [])
+  for rule in rules:
+    # Make sure that there's no conflict among rule names and extensions.
+    rule_name = rule['rule_name']
+    if rule_name in rule_names:
+      raise GypError('rule %s exists in duplicate, target %s' %
+                     (rule_name, target))
+    rule_names[rule_name] = rule
+
+    rule_extension = rule['extension']
+    if rule_extension.startswith('.'):
+      rule_extension = rule_extension[1:]
+    if rule_extension in rule_extensions:
+      raise GypError(('extension %s associated with multiple rules, ' +
+                      'target %s rules %s and %s') %
+                     (rule_extension, target,
+                      rule_extensions[rule_extension]['rule_name'],
+                      rule_name))
+    rule_extensions[rule_extension] = rule
+
+    # Make sure rule_sources isn't already there.  It's going to be
+    # created below if needed.
+    if 'rule_sources' in rule:
+      raise GypError(
+            'rule_sources must not exist in input, target %s rule %s' %
+            (target, rule_name))
+
+    rule_sources = []
+    source_keys = ['sources']
+    source_keys.extend(extra_sources_for_rules)
+    for source_key in source_keys:
+      for source in target_dict.get(source_key, []):
+        (source_root, source_extension) = os.path.splitext(source)
+        if source_extension.startswith('.'):
+          source_extension = source_extension[1:]
+        if source_extension == rule_extension:
+          rule_sources.append(source)
+
+    if len(rule_sources) > 0:
+      rule['rule_sources'] = rule_sources
+
+
+def ValidateRunAsInTarget(target, target_dict, build_file):
+  target_name = target_dict.get('target_name')
+  run_as = target_dict.get('run_as')
+  if not run_as:
+    return
+  if not isinstance(run_as, dict):
+    raise GypError("The 'run_as' in target %s from file %s should be a "
+                   "dictionary." %
+                   (target_name, build_file))
+  action = run_as.get('action')
+  if not action:
+    raise GypError("The 'run_as' in target %s from file %s must have an "
+                   "'action' section." %
+                   (target_name, build_file))
+  if not isinstance(action, list):
+    raise GypError("The 'action' for 'run_as' in target %s from file %s "
+                   "must be a list." %
+                   (target_name, build_file))
+  working_directory = run_as.get('working_directory')
+  if working_directory and not isinstance(working_directory, str):
+    raise GypError("The 'working_directory' for 'run_as' in target %s "
+                   "in file %s should be a string." %
+                   (target_name, build_file))
+  environment = run_as.get('environment')
+  if environment and not isinstance(environment, dict):
+    raise GypError("The 'environment' for 'run_as' in target %s "
+                   "in file %s should be a dictionary." %
+                   (target_name, build_file))
+
+
+def ValidateActionsInTarget(target, target_dict, build_file):
+  '''Validates the inputs to the actions in a target.'''
+  target_name = target_dict.get('target_name')
+  actions = target_dict.get('actions', [])
+  for action in actions:
+    action_name = action.get('action_name')
+    if not action_name:
+      raise GypError("Anonymous action in target %s.  "
+                     "An action must have an 'action_name' field." %
+                     target_name)
+    inputs = action.get('inputs', None)
+    if inputs is None:
+      raise GypError('Action in target %s has no inputs.' % target_name)
+    action_command = action.get('action')
+    if action_command and not action_command[0]:
+      raise GypError("Empty action as command in target %s." % target_name)
+
+
+def TurnIntIntoStrInDict(the_dict):
+  """Given dict the_dict, recursively converts all integers into strings.
+  """
+  # Use items instead of iteritems because there's no need to try to look at
+  # reinserted keys and their associated values.
+  for k, v in the_dict.items():
+    if isinstance(v, int):
+      v = str(v)
+      the_dict[k] = v
+    elif isinstance(v, dict):
+      TurnIntIntoStrInDict(v)
+    elif isinstance(v, list):
+      TurnIntIntoStrInList(v)
+
+    if isinstance(k, int):
+      the_dict[str(k)] = v
+      del the_dict[k]
+
+
+def TurnIntIntoStrInList(the_list):
+  """Given list the_list, recursively converts all integers into strings.
+  """
+  for index in xrange(0, len(the_list)):
+    item = the_list[index]
+    if isinstance(item, int):
+      the_list[index] = str(item)
+    elif isinstance(item, dict):
+      TurnIntIntoStrInDict(item)
+    elif isinstance(item, list):
+      TurnIntIntoStrInList(item)
+
+
+def PruneUnwantedTargets(targets, flat_list, dependency_nodes, root_targets,
+                         data):
+  """Return only the targets that are deep dependencies of |root_targets|."""
+  qualified_root_targets = []
+  for target in root_targets:
+    target = target.strip()
+    qualified_targets = gyp.common.FindQualifiedTargets(target, flat_list)
+    if not qualified_targets:
+      raise GypError("Could not find target %s" % target)
+    qualified_root_targets.extend(qualified_targets)
+
+  wanted_targets = {}
+  for target in qualified_root_targets:
+    wanted_targets[target] = targets[target]
+    for dependency in dependency_nodes[target].DeepDependencies():
+      wanted_targets[dependency] = targets[dependency]
+
+  wanted_flat_list = [t for t in flat_list if t in wanted_targets]
+
+  # Prune unwanted targets from each build_file's data dict.
+  for build_file in data['target_build_files']:
+    if not 'targets' in data[build_file]:
+      continue
+    new_targets = []
+    for target in data[build_file]['targets']:
+      qualified_name = gyp.common.QualifiedTarget(build_file,
+                                                  target['target_name'],
+                                                  target['toolset'])
+      if qualified_name in wanted_targets:
+        new_targets.append(target)
+    data[build_file]['targets'] = new_targets
+
+  return wanted_targets, wanted_flat_list
+
+
+def VerifyNoCollidingTargets(targets):
+  """Verify that no two targets in the same directory share the same name.
+
+  Arguments:
+    targets: A list of targets in the form 'path/to/file.gyp:target_name'.
+  """
+  # Keep a dict going from 'subdirectory:target_name' to 'foo.gyp'.
+  used = {}
+  for target in targets:
+    # Separate out 'path/to/file.gyp, 'target_name' from
+    # 'path/to/file.gyp:target_name'.
+    path, name = target.rsplit(':', 1)
+    # Separate out 'path/to', 'file.gyp' from 'path/to/file.gyp'.
+    subdir, gyp = os.path.split(path)
+    # Use '.' for the current directory '', so that the error messages make
+    # more sense.
+    if not subdir:
+      subdir = '.'
+    # Prepare a key like 'path/to:target_name'.
+    key = subdir + ':' + name
+    if key in used:
+      # Complain if this target is already used.
+      raise GypError('Duplicate target name "%s" in directory "%s" used both '
+                     'in "%s" and "%s".' % (name, subdir, gyp, used[key]))
+    used[key] = gyp
+
+
+def SetGeneratorGlobals(generator_input_info):
+  # Set up path_sections and non_configuration_keys with the default data plus
+  # the generator-specific data.
+  global path_sections
+  path_sections = base_path_sections[:]
+  path_sections.extend(generator_input_info['path_sections'])
+
+  global non_configuration_keys
+  non_configuration_keys = base_non_configuration_keys[:]
+  non_configuration_keys.extend(generator_input_info['non_configuration_keys'])
+
+  global multiple_toolsets
+  multiple_toolsets = generator_input_info[
+      'generator_supports_multiple_toolsets']
+
+  global generator_filelist_paths
+  generator_filelist_paths = generator_input_info['generator_filelist_paths']
+
+
+def Load(build_files, variables, includes, depth, generator_input_info, check,
+         circular_check, parallel, root_targets):
+  SetGeneratorGlobals(generator_input_info)
+  # A generator can have other lists (in addition to sources) be processed
+  # for rules.
+  extra_sources_for_rules = generator_input_info['extra_sources_for_rules']
+
+  # Load build files.  This loads every target-containing build file into
+  # the |data| dictionary such that the keys to |data| are build file names,
+  # and the values are the entire build file contents after "early" or "pre"
+  # processing has been done and includes have been resolved.
+  # NOTE: data contains both "target" files (.gyp) and "includes" (.gypi), as
+  # well as meta-data (e.g. 'included_files' key). 'target_build_files' keeps
+  # track of the keys corresponding to "target" files.
+  data = {'target_build_files': set()}
+  aux_data = {}
+  # Normalize paths everywhere.  This is important because paths will be
+  # used as keys to the data dict and for references between input files.
+  build_files = set(map(os.path.normpath, build_files))
+  if parallel:
+    LoadTargetBuildFilesParallel(build_files, data, aux_data,
+                                 variables, includes, depth, check,
+                                 generator_input_info)
+  else:
+    for build_file in build_files:
+      try:
+        LoadTargetBuildFile(build_file, data, aux_data,
+                            variables, includes, depth, check, True)
+      except Exception, e:
+        gyp.common.ExceptionAppend(e, 'while trying to load %s' % build_file)
+        raise
+
+  # Build a dict to access each target's subdict by qualified name.
+  targets = BuildTargetsDict(data)
+
+  # Fully qualify all dependency links.
+  QualifyDependencies(targets)
+
+  # Remove self-dependencies from targets that have 'prune_self_dependencies'
+  # set to 1.
+  RemoveSelfDependencies(targets)
+
+  # Expand dependencies specified as build_file:*.
+  ExpandWildcardDependencies(targets, data)
+
+  # Apply exclude (!) and regex (/) list filters only for dependency_sections.
+  for target_name, target_dict in targets.iteritems():
+    tmp_dict = {}
+    for key_base in dependency_sections:
+      for op in ('', '!', '/'):
+        key = key_base + op
+        if key in target_dict:
+          tmp_dict[key] = target_dict[key]
+          del target_dict[key]
+    ProcessListFiltersInDict(target_name, tmp_dict)
+    # Write the results back to |target_dict|.
+    for key in tmp_dict:
+      target_dict[key] = tmp_dict[key]
+
+  # Make sure every dependency appears at most once.
+  RemoveDuplicateDependencies(targets)
+
+  if circular_check:
+    # Make sure that any targets in a.gyp don't contain dependencies in other
+    # .gyp files that further depend on a.gyp.
+    VerifyNoGYPFileCircularDependencies(targets)
+
+  [dependency_nodes, flat_list] = BuildDependencyList(targets)
+
+  if root_targets:
+    # Remove, from |targets| and |flat_list|, the targets that are not deep
+    # dependencies of the targets specified in |root_targets|.
+    targets, flat_list = PruneUnwantedTargets(
+        targets, flat_list, dependency_nodes, root_targets, data)
+
+  # Check that no two targets in the same directory have the same name.
+  VerifyNoCollidingTargets(flat_list)
+
+  # Handle dependent settings of various types.
+  for settings_type in ['all_dependent_settings',
+                        'direct_dependent_settings',
+                        'link_settings']:
+    DoDependentSettings(settings_type, flat_list, targets, dependency_nodes)
+
+    # Take out the dependent settings now that they've been published to all
+    # of the targets that require them.
+    for target in flat_list:
+      if settings_type in targets[target]:
+        del targets[target][settings_type]
+
+  # Make sure static libraries don't declare dependencies on other static
+  # libraries, but that linkables depend on all unlinked static libraries
+  # that they need so that their link steps will be correct.
+  gii = generator_input_info
+  if gii['generator_wants_static_library_dependencies_adjusted']:
+    AdjustStaticLibraryDependencies(flat_list, targets, dependency_nodes,
+                                    gii['generator_wants_sorted_dependencies'])
+
+  # Apply "post"/"late"/"target" variable expansions and condition evaluations.
+  for target in flat_list:
+    target_dict = targets[target]
+    build_file = gyp.common.BuildFile(target)
+    ProcessVariablesAndConditionsInDict(
+        target_dict, PHASE_LATE, variables, build_file)
+
+  # Move everything that can go into a "configurations" section into one.
+  for target in flat_list:
+    target_dict = targets[target]
+    SetUpConfigurations(target, target_dict)
+
+  # Apply exclude (!) and regex (/) list filters.
+  for target in flat_list:
+    target_dict = targets[target]
+    ProcessListFiltersInDict(target, target_dict)
+
+  # Apply "latelate" variable expansions and condition evaluations.
+  for target in flat_list:
+    target_dict = targets[target]
+    build_file = gyp.common.BuildFile(target)
+    ProcessVariablesAndConditionsInDict(
+        target_dict, PHASE_LATELATE, variables, build_file)
+
+  # Make sure that the rules make sense, and build up rule_sources lists as
+  # needed.  Not all generators will need to use the rule_sources lists, but
+  # some may, and it seems best to build the list in a common spot.
+  # Also validate actions and run_as elements in targets.
+  for target in flat_list:
+    target_dict = targets[target]
+    build_file = gyp.common.BuildFile(target)
+    ValidateTargetType(target, target_dict)
+    # TODO(thakis): Get vpx_scale/arm/scalesystemdependent.c to be renamed to
+    #               scalesystemdependent_arm_additions.c or similar.
+    if 'arm' not in variables.get('target_arch', ''):
+      ValidateSourcesInTarget(target, target_dict, build_file)
+    ValidateRulesInTarget(target, target_dict, extra_sources_for_rules)
+    ValidateRunAsInTarget(target, target_dict, build_file)
+    ValidateActionsInTarget(target, target_dict, build_file)
+
+  # Generators might not expect ints.  Turn them into strs.
+  TurnIntIntoStrInDict(data)
+
+  # TODO(mark): Return |data| for now because the generator needs a list of
+  # build files that came in.  In the future, maybe it should just accept
+  # a list, and not the whole data dict.
+  return [flat_list, targets, data]
diff --git a/deps/gyp/pylib/gyp/input_test.py b/deps/gyp/pylib/gyp/input_test.py
new file mode 100755
index 0000000000..cdbf6b2fad
--- /dev/null
+++ b/deps/gyp/pylib/gyp/input_test.py
@@ -0,0 +1,90 @@
+#!/usr/bin/env python
+
+# Copyright 2013 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Unit tests for the input.py file."""
+
+import gyp.input
+import unittest
+import sys
+
+
+class TestFindCycles(unittest.TestCase):
+  def setUp(self):
+    self.nodes = {}
+    for x in ('a', 'b', 'c', 'd', 'e'):
+      self.nodes[x] = gyp.input.DependencyGraphNode(x)
+
+  def _create_dependency(self, dependent, dependency):
+    dependent.dependencies.append(dependency)
+    dependency.dependents.append(dependent)
+
+  def test_no_cycle_empty_graph(self):
+    for label, node in self.nodes.iteritems():
+      self.assertEquals([], node.FindCycles())
+
+  def test_no_cycle_line(self):
+    self._create_dependency(self.nodes['a'], self.nodes['b'])
+    self._create_dependency(self.nodes['b'], self.nodes['c'])
+    self._create_dependency(self.nodes['c'], self.nodes['d'])
+
+    for label, node in self.nodes.iteritems():
+      self.assertEquals([], node.FindCycles())
+
+  def test_no_cycle_dag(self):
+    self._create_dependency(self.nodes['a'], self.nodes['b'])
+    self._create_dependency(self.nodes['a'], self.nodes['c'])
+    self._create_dependency(self.nodes['b'], self.nodes['c'])
+
+    for label, node in self.nodes.iteritems():
+      self.assertEquals([], node.FindCycles())
+
+  def test_cycle_self_reference(self):
+    self._create_dependency(self.nodes['a'], self.nodes['a'])
+
+    self.assertEquals([(self.nodes['a'], self.nodes['a'])],
+                      self.nodes['a'].FindCycles())
+
+  def test_cycle_two_nodes(self):
+    self._create_dependency(self.nodes['a'], self.nodes['b'])
+    self._create_dependency(self.nodes['b'], self.nodes['a'])
+
+    self.assertEquals([(self.nodes['a'], self.nodes['b'], self.nodes['a'])],
+                      self.nodes['a'].FindCycles())
+    self.assertEquals([(self.nodes['b'], self.nodes['a'], self.nodes['b'])],
+                      self.nodes['b'].FindCycles())
+
+  def test_two_cycles(self):
+    self._create_dependency(self.nodes['a'], self.nodes['b'])
+    self._create_dependency(self.nodes['b'], self.nodes['a'])
+
+    self._create_dependency(self.nodes['b'], self.nodes['c'])
+    self._create_dependency(self.nodes['c'], self.nodes['b'])
+
+    cycles = self.nodes['a'].FindCycles()
+    self.assertTrue(
+       (self.nodes['a'], self.nodes['b'], self.nodes['a']) in cycles)
+    self.assertTrue(
+       (self.nodes['b'], self.nodes['c'], self.nodes['b']) in cycles)
+    self.assertEquals(2, len(cycles))
+
+  def test_big_cycle(self):
+    self._create_dependency(self.nodes['a'], self.nodes['b'])
+    self._create_dependency(self.nodes['b'], self.nodes['c'])
+    self._create_dependency(self.nodes['c'], self.nodes['d'])
+    self._create_dependency(self.nodes['d'], self.nodes['e'])
+    self._create_dependency(self.nodes['e'], self.nodes['a'])
+
+    self.assertEquals([(self.nodes['a'],
+                        self.nodes['b'],
+                        self.nodes['c'],
+                        self.nodes['d'],
+                        self.nodes['e'],
+                        self.nodes['a'])],
+                      self.nodes['a'].FindCycles())
+
+
+if __name__ == '__main__':
+  unittest.main()
diff --git a/deps/gyp/pylib/gyp/mac_tool.py b/deps/gyp/pylib/gyp/mac_tool.py
new file mode 100755
index 0000000000..c61a3ef60b
--- /dev/null
+++ b/deps/gyp/pylib/gyp/mac_tool.py
@@ -0,0 +1,510 @@
+#!/usr/bin/env python
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Utility functions to perform Xcode-style build steps.
+
+These functions are executed via gyp-mac-tool when using the Makefile generator.
+"""
+
+import fcntl
+import fnmatch
+import glob
+import json
+import os
+import plistlib
+import re
+import shutil
+import string
+import subprocess
+import sys
+import tempfile
+
+
+def main(args):
+  executor = MacTool()
+  exit_code = executor.Dispatch(args)
+  if exit_code is not None:
+    sys.exit(exit_code)
+
+
+class MacTool(object):
+  """This class performs all the Mac tooling steps. The methods can either be
+  executed directly, or dispatched from an argument list."""
+
+  def Dispatch(self, args):
+    """Dispatches a string command to a method."""
+    if len(args) < 1:
+      raise Exception("Not enough arguments")
+
+    method = "Exec%s" % self._CommandifyName(args[0])
+    return getattr(self, method)(*args[1:])
+
+  def _CommandifyName(self, name_string):
+    """Transforms a tool name like copy-info-plist to CopyInfoPlist"""
+    return name_string.title().replace('-', '')
+
+  def ExecCopyBundleResource(self, source, dest):
+    """Copies a resource file to the bundle/Resources directory, performing any
+    necessary compilation on each resource."""
+    extension = os.path.splitext(source)[1].lower()
+    if os.path.isdir(source):
+      # Copy tree.
+      # TODO(thakis): This copies file attributes like mtime, while the
+      # single-file branch below doesn't. This should probably be changed to
+      # be consistent with the single-file branch.
+      if os.path.exists(dest):
+        shutil.rmtree(dest)
+      shutil.copytree(source, dest)
+    elif extension == '.xib':
+      return self._CopyXIBFile(source, dest)
+    elif extension == '.storyboard':
+      return self._CopyXIBFile(source, dest)
+    elif extension == '.strings':
+      self._CopyStringsFile(source, dest)
+    else:
+      shutil.copy(source, dest)
+
+  def _CopyXIBFile(self, source, dest):
+    """Compiles a XIB file with ibtool into a binary plist in the bundle."""
+
+    # ibtool sometimes crashes with relative paths. See crbug.com/314728.
+    base = os.path.dirname(os.path.realpath(__file__))
+    if os.path.relpath(source):
+      source = os.path.join(base, source)
+    if os.path.relpath(dest):
+      dest = os.path.join(base, dest)
+
+    args = ['xcrun', 'ibtool', '--errors', '--warnings', '--notices',
+        '--output-format', 'human-readable-text', '--compile', dest, source]
+    ibtool_section_re = re.compile(r'/\*.*\*/')
+    ibtool_re = re.compile(r'.*note:.*is clipping its content')
+    ibtoolout = subprocess.Popen(args, stdout=subprocess.PIPE)
+    current_section_header = None
+    for line in ibtoolout.stdout:
+      if ibtool_section_re.match(line):
+        current_section_header = line
+      elif not ibtool_re.match(line):
+        if current_section_header:
+          sys.stdout.write(current_section_header)
+          current_section_header = None
+        sys.stdout.write(line)
+    return ibtoolout.returncode
+
+  def _CopyStringsFile(self, source, dest):
+    """Copies a .strings file using iconv to reconvert the input into UTF-16."""
+    input_code = self._DetectInputEncoding(source) or "UTF-8"
+
+    # Xcode's CpyCopyStringsFile / builtin-copyStrings seems to call
+    # CFPropertyListCreateFromXMLData() behind the scenes; at least it prints
+    #     CFPropertyListCreateFromXMLData(): Old-style plist parser: missing
+    #     semicolon in dictionary.
+    # on invalid files. Do the same kind of validation.
+    import CoreFoundation
+    s = open(source, 'rb').read()
+    d = CoreFoundation.CFDataCreate(None, s, len(s))
+    _, error = CoreFoundation.CFPropertyListCreateFromXMLData(None, d, 0, None)
+    if error:
+      return
+
+    fp = open(dest, 'wb')
+    fp.write(s.decode(input_code).encode('UTF-16'))
+    fp.close()
+
+  def _DetectInputEncoding(self, file_name):
+    """Reads the first few bytes from file_name and tries to guess the text
+    encoding. Returns None as a guess if it can't detect it."""
+    fp = open(file_name, 'rb')
+    try:
+      header = fp.read(3)
+    except e:
+      fp.close()
+      return None
+    fp.close()
+    if header.startswith("\xFE\xFF"):
+      return "UTF-16"
+    elif header.startswith("\xFF\xFE"):
+      return "UTF-16"
+    elif header.startswith("\xEF\xBB\xBF"):
+      return "UTF-8"
+    else:
+      return None
+
+  def ExecCopyInfoPlist(self, source, dest, *keys):
+    """Copies the |source| Info.plist to the destination directory |dest|."""
+    # Read the source Info.plist into memory.
+    fd = open(source, 'r')
+    lines = fd.read()
+    fd.close()
+
+    # Insert synthesized key/value pairs (e.g. BuildMachineOSBuild).
+    plist = plistlib.readPlistFromString(lines)
+    if keys:
+      plist = dict(plist.items() + json.loads(keys[0]).items())
+    lines = plistlib.writePlistToString(plist)
+
+    # Go through all the environment variables and replace them as variables in
+    # the file.
+    IDENT_RE = re.compile('[/\s]')
+    for key in os.environ:
+      if key.startswith('_'):
+        continue
+      evar = '${%s}' % key
+      evalue = os.environ[key]
+      lines = string.replace(lines, evar, evalue)
+
+      # Xcode supports various suffices on environment variables, which are
+      # all undocumented. :rfc1034identifier is used in the standard project
+      # template these days, and :identifier was used earlier. They are used to
+      # convert non-url characters into things that look like valid urls --
+      # except that the replacement character for :identifier, '_' isn't valid
+      # in a URL either -- oops, hence :rfc1034identifier was born.
+      evar = '${%s:identifier}' % key
+      evalue = IDENT_RE.sub('_', os.environ[key])
+      lines = string.replace(lines, evar, evalue)
+
+      evar = '${%s:rfc1034identifier}' % key
+      evalue = IDENT_RE.sub('-', os.environ[key])
+      lines = string.replace(lines, evar, evalue)
+
+    # Remove any keys with values that haven't been replaced.
+    lines = lines.split('\n')
+    for i in range(len(lines)):
+      if lines[i].strip().startswith("<string>${"):
+        lines[i] = None
+        lines[i - 1] = None
+    lines = '\n'.join(filter(lambda x: x is not None, lines))
+
+    # Write out the file with variables replaced.
+    fd = open(dest, 'w')
+    fd.write(lines)
+    fd.close()
+
+    # Now write out PkgInfo file now that the Info.plist file has been
+    # "compiled".
+    self._WritePkgInfo(dest)
+
+  def _WritePkgInfo(self, info_plist):
+    """This writes the PkgInfo file from the data stored in Info.plist."""
+    plist = plistlib.readPlist(info_plist)
+    if not plist:
+      return
+
+    # Only create PkgInfo for executable types.
+    package_type = plist['CFBundlePackageType']
+    if package_type != 'APPL':
+      return
+
+    # The format of PkgInfo is eight characters, representing the bundle type
+    # and bundle signature, each four characters. If that is missing, four
+    # '?' characters are used instead.
+    signature_code = plist.get('CFBundleSignature', '????')
+    if len(signature_code) != 4:  # Wrong length resets everything, too.
+      signature_code = '?' * 4
+
+    dest = os.path.join(os.path.dirname(info_plist), 'PkgInfo')
+    fp = open(dest, 'w')
+    fp.write('%s%s' % (package_type, signature_code))
+    fp.close()
+
+  def ExecFlock(self, lockfile, *cmd_list):
+    """Emulates the most basic behavior of Linux's flock(1)."""
+    # Rely on exception handling to report errors.
+    fd = os.open(lockfile, os.O_RDONLY|os.O_NOCTTY|os.O_CREAT, 0o666)
+    fcntl.flock(fd, fcntl.LOCK_EX)
+    return subprocess.call(cmd_list)
+
+  def ExecFilterLibtool(self, *cmd_list):
+    """Calls libtool and filters out '/path/to/libtool: file: foo.o has no
+    symbols'."""
+    libtool_re = re.compile(r'^.*libtool: file: .* has no symbols$')
+    libtoolout = subprocess.Popen(cmd_list, stderr=subprocess.PIPE)
+    _, err = libtoolout.communicate()
+    for line in err.splitlines():
+      if not libtool_re.match(line):
+        print >>sys.stderr, line
+    return libtoolout.returncode
+
+  def ExecPackageFramework(self, framework, version):
+    """Takes a path to Something.framework and the Current version of that and
+    sets up all the symlinks."""
+    # Find the name of the binary based on the part before the ".framework".
+    binary = os.path.basename(framework).split('.')[0]
+
+    CURRENT = 'Current'
+    RESOURCES = 'Resources'
+    VERSIONS = 'Versions'
+
+    if not os.path.exists(os.path.join(framework, VERSIONS, version, binary)):
+      # Binary-less frameworks don't seem to contain symlinks (see e.g.
+      # chromium's out/Debug/org.chromium.Chromium.manifest/ bundle).
+      return
+
+    # Move into the framework directory to set the symlinks correctly.
+    pwd = os.getcwd()
+    os.chdir(framework)
+
+    # Set up the Current version.
+    self._Relink(version, os.path.join(VERSIONS, CURRENT))
+
+    # Set up the root symlinks.
+    self._Relink(os.path.join(VERSIONS, CURRENT, binary), binary)
+    self._Relink(os.path.join(VERSIONS, CURRENT, RESOURCES), RESOURCES)
+
+    # Back to where we were before!
+    os.chdir(pwd)
+
+  def _Relink(self, dest, link):
+    """Creates a symlink to |dest| named |link|. If |link| already exists,
+    it is overwritten."""
+    if os.path.lexists(link):
+      os.remove(link)
+    os.symlink(dest, link)
+
+  def ExecCodeSignBundle(self, key, resource_rules, entitlements, provisioning):
+    """Code sign a bundle.
+
+    This function tries to code sign an iOS bundle, following the same
+    algorithm as Xcode:
+      1. copy ResourceRules.plist from the user or the SDK into the bundle,
+      2. pick the provisioning profile that best match the bundle identifier,
+         and copy it into the bundle as embedded.mobileprovision,
+      3. copy Entitlements.plist from user or SDK next to the bundle,
+      4. code sign the bundle.
+    """
+    resource_rules_path = self._InstallResourceRules(resource_rules)
+    substitutions, overrides = self._InstallProvisioningProfile(
+        provisioning, self._GetCFBundleIdentifier())
+    entitlements_path = self._InstallEntitlements(
+        entitlements, substitutions, overrides)
+    subprocess.check_call([
+        'codesign', '--force', '--sign', key, '--resource-rules',
+        resource_rules_path, '--entitlements', entitlements_path,
+        os.path.join(
+            os.environ['TARGET_BUILD_DIR'],
+            os.environ['FULL_PRODUCT_NAME'])])
+
+  def _InstallResourceRules(self, resource_rules):
+    """Installs ResourceRules.plist from user or SDK into the bundle.
+
+    Args:
+      resource_rules: string, optional, path to the ResourceRules.plist file
+        to use, default to "${SDKROOT}/ResourceRules.plist"
+
+    Returns:
+      Path to the copy of ResourceRules.plist into the bundle.
+    """
+    source_path = resource_rules
+    target_path = os.path.join(
+        os.environ['BUILT_PRODUCTS_DIR'],
+        os.environ['CONTENTS_FOLDER_PATH'],
+        'ResourceRules.plist')
+    if not source_path:
+      source_path = os.path.join(
+          os.environ['SDKROOT'], 'ResourceRules.plist')
+    shutil.copy2(source_path, target_path)
+    return target_path
+
+  def _InstallProvisioningProfile(self, profile, bundle_identifier):
+    """Installs embedded.mobileprovision into the bundle.
+
+    Args:
+      profile: string, optional, short name of the .mobileprovision file
+        to use, if empty or the file is missing, the best file installed
+        will be used
+      bundle_identifier: string, value of CFBundleIdentifier from Info.plist
+
+    Returns:
+      A tuple containing two dictionary: variables substitutions and values
+      to overrides when generating the entitlements file.
+    """
+    source_path, provisioning_data, team_id = self._FindProvisioningProfile(
+        profile, bundle_identifier)
+    target_path = os.path.join(
+        os.environ['BUILT_PRODUCTS_DIR'],
+        os.environ['CONTENTS_FOLDER_PATH'],
+        'embedded.mobileprovision')
+    shutil.copy2(source_path, target_path)
+    substitutions = self._GetSubstitutions(bundle_identifier, team_id + '.')
+    return substitutions, provisioning_data['Entitlements']
+
+  def _FindProvisioningProfile(self, profile, bundle_identifier):
+    """Finds the .mobileprovision file to use for signing the bundle.
+
+    Checks all the installed provisioning profiles (or if the user specified
+    the PROVISIONING_PROFILE variable, only consult it) and select the most
+    specific that correspond to the bundle identifier.
+
+    Args:
+      profile: string, optional, short name of the .mobileprovision file
+        to use, if empty or the file is missing, the best file installed
+        will be used
+      bundle_identifier: string, value of CFBundleIdentifier from Info.plist
+
+    Returns:
+      A tuple of the path to the selected provisioning profile, the data of
+      the embedded plist in the provisioning profile and the team identifier
+      to use for code signing.
+
+    Raises:
+      SystemExit: if no .mobileprovision can be used to sign the bundle.
+    """
+    profiles_dir = os.path.join(
+        os.environ['HOME'], 'Library', 'MobileDevice', 'Provisioning Profiles')
+    if not os.path.isdir(profiles_dir):
+      print >>sys.stderr, (
+          'cannot find mobile provisioning for %s' % bundle_identifier)
+      sys.exit(1)
+    provisioning_profiles = None
+    if profile:
+      profile_path = os.path.join(profiles_dir, profile + '.mobileprovision')
+      if os.path.exists(profile_path):
+        provisioning_profiles = [profile_path]
+    if not provisioning_profiles:
+      provisioning_profiles = glob.glob(
+          os.path.join(profiles_dir, '*.mobileprovision'))
+    valid_provisioning_profiles = {}
+    for profile_path in provisioning_profiles:
+      profile_data = self._LoadProvisioningProfile(profile_path)
+      app_id_pattern = profile_data.get(
+          'Entitlements', {}).get('application-identifier', '')
+      for team_identifier in profile_data.get('TeamIdentifier', []):
+        app_id = '%s.%s' % (team_identifier, bundle_identifier)
+        if fnmatch.fnmatch(app_id, app_id_pattern):
+          valid_provisioning_profiles[app_id_pattern] = (
+              profile_path, profile_data, team_identifier)
+    if not valid_provisioning_profiles:
+      print >>sys.stderr, (
+          'cannot find mobile provisioning for %s' % bundle_identifier)
+      sys.exit(1)
+    # If the user has multiple provisioning profiles installed that can be
+    # used for ${bundle_identifier}, pick the most specific one (ie. the
+    # provisioning profile whose pattern is the longest).
+    selected_key = max(valid_provisioning_profiles, key=lambda v: len(v))
+    return valid_provisioning_profiles[selected_key]
+
+  def _LoadProvisioningProfile(self, profile_path):
+    """Extracts the plist embedded in a provisioning profile.
+
+    Args:
+      profile_path: string, path to the .mobileprovision file
+
+    Returns:
+      Content of the plist embedded in the provisioning profile as a dictionary.
+    """
+    with tempfile.NamedTemporaryFile() as temp:
+      subprocess.check_call([
+          'security', 'cms', '-D', '-i', profile_path, '-o', temp.name])
+      return self._LoadPlistMaybeBinary(temp.name)
+
+  def _LoadPlistMaybeBinary(self, plist_path):
+    """Loads into a memory a plist possibly encoded in binary format.
+
+    This is a wrapper around plistlib.readPlist that tries to convert the
+    plist to the XML format if it can't be parsed (assuming that it is in
+    the binary format).
+
+    Args:
+      plist_path: string, path to a plist file, in XML or binary format
+
+    Returns:
+      Content of the plist as a dictionary.
+    """
+    try:
+      # First, try to read the file using plistlib that only supports XML,
+      # and if an exception is raised, convert a temporary copy to XML and
+      # load that copy.
+      return plistlib.readPlist(plist_path)
+    except:
+      pass
+    with tempfile.NamedTemporaryFile() as temp:
+      shutil.copy2(plist_path, temp.name)
+      subprocess.check_call(['plutil', '-convert', 'xml1', temp.name])
+      return plistlib.readPlist(temp.name)
+
+  def _GetSubstitutions(self, bundle_identifier, app_identifier_prefix):
+    """Constructs a dictionary of variable substitutions for Entitlements.plist.
+
+    Args:
+      bundle_identifier: string, value of CFBundleIdentifier from Info.plist
+      app_identifier_prefix: string, value for AppIdentifierPrefix
+
+    Returns:
+      Dictionary of substitutions to apply when generating Entitlements.plist.
+    """
+    return {
+      'CFBundleIdentifier': bundle_identifier,
+      'AppIdentifierPrefix': app_identifier_prefix,
+    }
+
+  def _GetCFBundleIdentifier(self):
+    """Extracts CFBundleIdentifier value from Info.plist in the bundle.
+
+    Returns:
+      Value of CFBundleIdentifier in the Info.plist located in the bundle.
+    """
+    info_plist_path = os.path.join(
+        os.environ['TARGET_BUILD_DIR'],
+        os.environ['INFOPLIST_PATH'])
+    info_plist_data = self._LoadPlistMaybeBinary(info_plist_path)
+    return info_plist_data['CFBundleIdentifier']
+
+  def _InstallEntitlements(self, entitlements, substitutions, overrides):
+    """Generates and install the ${BundleName}.xcent entitlements file.
+
+    Expands variables "$(variable)" pattern in the source entitlements file,
+    add extra entitlements defined in the .mobileprovision file and the copy
+    the generated plist to "${BundlePath}.xcent".
+
+    Args:
+      entitlements: string, optional, path to the Entitlements.plist template
+        to use, defaults to "${SDKROOT}/Entitlements.plist"
+      substitutions: dictionary, variable substitutions
+      overrides: dictionary, values to add to the entitlements
+
+    Returns:
+      Path to the generated entitlements file.
+    """
+    source_path = entitlements
+    target_path = os.path.join(
+        os.environ['BUILT_PRODUCTS_DIR'],
+        os.environ['PRODUCT_NAME'] + '.xcent')
+    if not source_path:
+      source_path = os.path.join(
+          os.environ['SDKROOT'],
+          'Entitlements.plist')
+    shutil.copy2(source_path, target_path)
+    data = self._LoadPlistMaybeBinary(target_path)
+    data = self._ExpandVariables(data, substitutions)
+    if overrides:
+      for key in overrides:
+        if key not in data:
+          data[key] = overrides[key]
+    plistlib.writePlist(data, target_path)
+    return target_path
+
+  def _ExpandVariables(self, data, substitutions):
+    """Expands variables "$(variable)" in data.
+
+    Args:
+      data: object, can be either string, list or dictionary
+      substitutions: dictionary, variable substitutions to perform
+
+    Returns:
+      Copy of data where each references to "$(variable)" has been replaced
+      by the corresponding value found in substitutions, or left intact if
+      the key was not found.
+    """
+    if isinstance(data, str):
+      for key, value in substitutions.iteritems():
+        data = data.replace('$(%s)' % key, value)
+      return data
+    if isinstance(data, list):
+      return [self._ExpandVariables(v, substitutions) for v in data]
+    if isinstance(data, dict):
+      return {k: self._ExpandVariables(data[k], substitutions) for k in data}
+    return data
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))
diff --git a/deps/gyp/pylib/gyp/msvs_emulation.py b/deps/gyp/pylib/gyp/msvs_emulation.py
new file mode 100644
index 0000000000..709ba305d2
--- /dev/null
+++ b/deps/gyp/pylib/gyp/msvs_emulation.py
@@ -0,0 +1,972 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+This module helps emulate Visual Studio 2008 behavior on top of other
+build systems, primarily ninja.
+"""
+
+import os
+import re
+import subprocess
+import sys
+
+import gyp.MSVSVersion
+
+windows_quoter_regex = re.compile(r'(\\*)"')
+
+def QuoteForRspFile(arg):
+  """Quote a command line argument so that it appears as one argument when
+  processed via cmd.exe and parsed by CommandLineToArgvW (as is typical for
+  Windows programs)."""
+  # See http://goo.gl/cuFbX and http://goo.gl/dhPnp including the comment
+  # threads. This is actually the quoting rules for CommandLineToArgvW, not
+  # for the shell, because the shell doesn't do anything in Windows. This
+  # works more or less because most programs (including the compiler, etc.)
+  # use that function to handle command line arguments.
+
+  # For a literal quote, CommandLineToArgvW requires 2n+1 backslashes
+  # preceding it, and results in n backslashes + the quote. So we substitute
+  # in 2* what we match, +1 more, plus the quote.
+  arg = windows_quoter_regex.sub(lambda mo: 2 * mo.group(1) + '\\"', arg)
+
+  # %'s also need to be doubled otherwise they're interpreted as batch
+  # positional arguments. Also make sure to escape the % so that they're
+  # passed literally through escaping so they can be singled to just the
+  # original %. Otherwise, trying to pass the literal representation that
+  # looks like an environment variable to the shell (e.g. %PATH%) would fail.
+  arg = arg.replace('%', '%%')
+
+  # These commands are used in rsp files, so no escaping for the shell (via ^)
+  # is necessary.
+
+  # Finally, wrap the whole thing in quotes so that the above quote rule
+  # applies and whitespace isn't a word break.
+  return '"' + arg + '"'
+
+
+def EncodeRspFileList(args):
+  """Process a list of arguments using QuoteCmdExeArgument."""
+  # Note that the first argument is assumed to be the command. Don't add
+  # quotes around it because then built-ins like 'echo', etc. won't work.
+  # Take care to normpath only the path in the case of 'call ../x.bat' because
+  # otherwise the whole thing is incorrectly interpreted as a path and not
+  # normalized correctly.
+  if not args: return ''
+  if args[0].startswith('call '):
+    call, program = args[0].split(' ', 1)
+    program = call + ' ' + os.path.normpath(program)
+  else:
+    program = os.path.normpath(args[0])
+  return program + ' ' + ' '.join(QuoteForRspFile(arg) for arg in args[1:])
+
+
+def _GenericRetrieve(root, default, path):
+  """Given a list of dictionary keys |path| and a tree of dicts |root|, find
+  value at path, or return |default| if any of the path doesn't exist."""
+  if not root:
+    return default
+  if not path:
+    return root
+  return _GenericRetrieve(root.get(path[0]), default, path[1:])
+
+
+def _AddPrefix(element, prefix):
+  """Add |prefix| to |element| or each subelement if element is iterable."""
+  if element is None:
+    return element
+  # Note, not Iterable because we don't want to handle strings like that.
+  if isinstance(element, list) or isinstance(element, tuple):
+    return [prefix + e for e in element]
+  else:
+    return prefix + element
+
+
+def _DoRemapping(element, map):
+  """If |element| then remap it through |map|. If |element| is iterable then
+  each item will be remapped. Any elements not found will be removed."""
+  if map is not None and element is not None:
+    if not callable(map):
+      map = map.get # Assume it's a dict, otherwise a callable to do the remap.
+    if isinstance(element, list) or isinstance(element, tuple):
+      element = filter(None, [map(elem) for elem in element])
+    else:
+      element = map(element)
+  return element
+
+
+def _AppendOrReturn(append, element):
+  """If |append| is None, simply return |element|. If |append| is not None,
+  then add |element| to it, adding each item in |element| if it's a list or
+  tuple."""
+  if append is not None and element is not None:
+    if isinstance(element, list) or isinstance(element, tuple):
+      append.extend(element)
+    else:
+      append.append(element)
+  else:
+    return element
+
+
+def _FindDirectXInstallation():
+  """Try to find an installation location for the DirectX SDK. Check for the
+  standard environment variable, and if that doesn't exist, try to find
+  via the registry. May return None if not found in either location."""
+  # Return previously calculated value, if there is one
+  if hasattr(_FindDirectXInstallation, 'dxsdk_dir'):
+    return _FindDirectXInstallation.dxsdk_dir
+
+  dxsdk_dir = os.environ.get('DXSDK_DIR')
+  if not dxsdk_dir:
+    # Setup params to pass to and attempt to launch reg.exe.
+    cmd = ['reg.exe', 'query', r'HKLM\Software\Microsoft\DirectX', '/s']
+    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    for line in p.communicate()[0].splitlines():
+      if 'InstallPath' in line:
+        dxsdk_dir = line.split('    ')[3] + "\\"
+
+  # Cache return value
+  _FindDirectXInstallation.dxsdk_dir = dxsdk_dir
+  return dxsdk_dir
+
+
+class MsvsSettings(object):
+  """A class that understands the gyp 'msvs_...' values (especially the
+  msvs_settings field). They largely correpond to the VS2008 IDE DOM. This
+  class helps map those settings to command line options."""
+
+  def __init__(self, spec, generator_flags):
+    self.spec = spec
+    self.vs_version = GetVSVersion(generator_flags)
+    self.dxsdk_dir = _FindDirectXInstallation()
+
+    # Try to find an installation location for the Windows DDK by checking
+    # the WDK_DIR environment variable, may be None.
+    self.wdk_dir = os.environ.get('WDK_DIR')
+
+    supported_fields = [
+        ('msvs_configuration_attributes', dict),
+        ('msvs_settings', dict),
+        ('msvs_system_include_dirs', list),
+        ('msvs_disabled_warnings', list),
+        ('msvs_precompiled_header', str),
+        ('msvs_precompiled_source', str),
+        ('msvs_configuration_platform', str),
+        ('msvs_target_platform', str),
+        ]
+    configs = spec['configurations']
+    for field, default in supported_fields:
+      setattr(self, field, {})
+      for configname, config in configs.iteritems():
+        getattr(self, field)[configname] = config.get(field, default())
+
+    self.msvs_cygwin_dirs = spec.get('msvs_cygwin_dirs', ['.'])
+
+    unsupported_fields = [
+        'msvs_prebuild',
+        'msvs_postbuild',
+    ]
+    unsupported = []
+    for field in unsupported_fields:
+      for config in configs.values():
+        if field in config:
+          unsupported += ["%s not supported (target %s)." %
+                          (field, spec['target_name'])]
+    if unsupported:
+      raise Exception('\n'.join(unsupported))
+
+  def GetVSMacroEnv(self, base_to_build=None, config=None):
+    """Get a dict of variables mapping internal VS macro names to their gyp
+    equivalents."""
+    target_platform = 'Win32' if self.GetArch(config) == 'x86' else 'x64'
+    target_name = self.spec.get('product_prefix', '') + \
+        self.spec.get('product_name', self.spec['target_name'])
+    target_dir = base_to_build + '\\' if base_to_build else ''
+    replacements = {
+        '$(OutDir)\\': target_dir,
+        '$(TargetDir)\\': target_dir,
+        '$(IntDir)': '$!INTERMEDIATE_DIR',
+        '$(InputPath)': '${source}',
+        '$(InputName)': '${root}',
+        '$(ProjectName)': self.spec['target_name'],
+        '$(TargetName)': target_name,
+        '$(PlatformName)': target_platform,
+        '$(ProjectDir)\\': '',
+    }
+    # '$(VSInstallDir)' and '$(VCInstallDir)' are available when and only when
+    # Visual Studio is actually installed.
+    if self.vs_version.Path():
+      replacements['$(VSInstallDir)'] = self.vs_version.Path()
+      replacements['$(VCInstallDir)'] = os.path.join(self.vs_version.Path(),
+                                                     'VC') + '\\'
+    # Chromium uses DXSDK_DIR in include/lib paths, but it may or may not be
+    # set. This happens when the SDK is sync'd via src-internal, rather than
+    # by typical end-user installation of the SDK. If it's not set, we don't
+    # want to leave the unexpanded variable in the path, so simply strip it.
+    replacements['$(DXSDK_DIR)'] = self.dxsdk_dir if self.dxsdk_dir else ''
+    replacements['$(WDK_DIR)'] = self.wdk_dir if self.wdk_dir else ''
+    return replacements
+
+  def ConvertVSMacros(self, s, base_to_build=None, config=None):
+    """Convert from VS macro names to something equivalent."""
+    env = self.GetVSMacroEnv(base_to_build, config=config)
+    return ExpandMacros(s, env)
+
+  def AdjustLibraries(self, libraries):
+    """Strip -l from library if it's specified with that."""
+    libs = [lib[2:] if lib.startswith('-l') else lib for lib in libraries]
+    return [lib + '.lib' if not lib.endswith('.lib') else lib for lib in libs]
+
+  def _GetAndMunge(self, field, path, default, prefix, append, map):
+    """Retrieve a value from |field| at |path| or return |default|. If
+    |append| is specified, and the item is found, it will be appended to that
+    object instead of returned. If |map| is specified, results will be
+    remapped through |map| before being returned or appended."""
+    result = _GenericRetrieve(field, default, path)
+    result = _DoRemapping(result, map)
+    result = _AddPrefix(result, prefix)
+    return _AppendOrReturn(append, result)
+
+  class _GetWrapper(object):
+    def __init__(self, parent, field, base_path, append=None):
+      self.parent = parent
+      self.field = field
+      self.base_path = [base_path]
+      self.append = append
+    def __call__(self, name, map=None, prefix='', default=None):
+      return self.parent._GetAndMunge(self.field, self.base_path + [name],
+          default=default, prefix=prefix, append=self.append, map=map)
+
+  def GetArch(self, config):
+    """Get architecture based on msvs_configuration_platform and
+    msvs_target_platform. Returns either 'x86' or 'x64'."""
+    configuration_platform = self.msvs_configuration_platform.get(config, '')
+    platform = self.msvs_target_platform.get(config, '')
+    if not platform: # If no specific override, use the configuration's.
+      platform = configuration_platform
+    # Map from platform to architecture.
+    return {'Win32': 'x86', 'x64': 'x64'}.get(platform, 'x86')
+
+  def _TargetConfig(self, config):
+    """Returns the target-specific configuration."""
+    # There's two levels of architecture/platform specification in VS. The
+    # first level is globally for the configuration (this is what we consider
+    # "the" config at the gyp level, which will be something like 'Debug' or
+    # 'Release_x64'), and a second target-specific configuration, which is an
+    # override for the global one. |config| is remapped here to take into
+    # account the local target-specific overrides to the global configuration.
+    arch = self.GetArch(config)
+    if arch == 'x64' and not config.endswith('_x64'):
+      config += '_x64'
+    if arch == 'x86' and config.endswith('_x64'):
+      config = config.rsplit('_', 1)[0]
+    return config
+
+  def _Setting(self, path, config,
+              default=None, prefix='', append=None, map=None):
+    """_GetAndMunge for msvs_settings."""
+    return self._GetAndMunge(
+        self.msvs_settings[config], path, default, prefix, append, map)
+
+  def _ConfigAttrib(self, path, config,
+                   default=None, prefix='', append=None, map=None):
+    """_GetAndMunge for msvs_configuration_attributes."""
+    return self._GetAndMunge(
+        self.msvs_configuration_attributes[config],
+        path, default, prefix, append, map)
+
+  def AdjustIncludeDirs(self, include_dirs, config):
+    """Updates include_dirs to expand VS specific paths, and adds the system
+    include dirs used for platform SDK and similar."""
+    config = self._TargetConfig(config)
+    includes = include_dirs + self.msvs_system_include_dirs[config]
+    includes.extend(self._Setting(
+      ('VCCLCompilerTool', 'AdditionalIncludeDirectories'), config, default=[]))
+    return [self.ConvertVSMacros(p, config=config) for p in includes]
+
+  def GetComputedDefines(self, config):
+    """Returns the set of defines that are injected to the defines list based
+    on other VS settings."""
+    config = self._TargetConfig(config)
+    defines = []
+    if self._ConfigAttrib(['CharacterSet'], config) == '1':
+      defines.extend(('_UNICODE', 'UNICODE'))
+    if self._ConfigAttrib(['CharacterSet'], config) == '2':
+      defines.append('_MBCS')
+    defines.extend(self._Setting(
+        ('VCCLCompilerTool', 'PreprocessorDefinitions'), config, default=[]))
+    return defines
+
+  def GetCompilerPdbName(self, config, expand_special):
+    """Get the pdb file name that should be used for compiler invocations, or
+    None if there's no explicit name specified."""
+    config = self._TargetConfig(config)
+    pdbname = self._Setting(
+        ('VCCLCompilerTool', 'ProgramDataBaseFileName'), config)
+    if pdbname:
+      pdbname = expand_special(self.ConvertVSMacros(pdbname))
+    return pdbname
+
+  def GetMapFileName(self, config, expand_special):
+    """Gets the explicitly overriden map file name for a target or returns None
+    if it's not set."""
+    config = self._TargetConfig(config)
+    map_file = self._Setting(('VCLinkerTool', 'MapFileName'), config)
+    if map_file:
+      map_file = expand_special(self.ConvertVSMacros(map_file, config=config))
+    return map_file
+
+  def GetOutputName(self, config, expand_special):
+    """Gets the explicitly overridden output name for a target or returns None
+    if it's not overridden."""
+    config = self._TargetConfig(config)
+    type = self.spec['type']
+    root = 'VCLibrarianTool' if type == 'static_library' else 'VCLinkerTool'
+    # TODO(scottmg): Handle OutputDirectory without OutputFile.
+    output_file = self._Setting((root, 'OutputFile'), config)
+    if output_file:
+      output_file = expand_special(self.ConvertVSMacros(
+          output_file, config=config))
+    return output_file
+
+  def GetPDBName(self, config, expand_special, default):
+    """Gets the explicitly overridden pdb name for a target or returns
+    default if it's not overridden, or if no pdb will be generated."""
+    config = self._TargetConfig(config)
+    output_file = self._Setting(('VCLinkerTool', 'ProgramDatabaseFile'), config)
+    generate_debug_info = self._Setting(
+        ('VCLinkerTool', 'GenerateDebugInformation'), config)
+    if generate_debug_info:
+      if output_file:
+        return expand_special(self.ConvertVSMacros(output_file, config=config))
+      else:
+        return default
+    else:
+      return None
+
+  def GetCflags(self, config):
+    """Returns the flags that need to be added to .c and .cc compilations."""
+    config = self._TargetConfig(config)
+    cflags = []
+    cflags.extend(['/wd' + w for w in self.msvs_disabled_warnings[config]])
+    cl = self._GetWrapper(self, self.msvs_settings[config],
+                          'VCCLCompilerTool', append=cflags)
+    cl('Optimization',
+       map={'0': 'd', '1': '1', '2': '2', '3': 'x'}, prefix='/O', default='2')
+    cl('InlineFunctionExpansion', prefix='/Ob')
+    cl('DisableSpecificWarnings', prefix='/wd')
+    cl('StringPooling', map={'true': '/GF'})
+    cl('EnableFiberSafeOptimizations', map={'true': '/GT'})
+    cl('OmitFramePointers', map={'false': '-', 'true': ''}, prefix='/Oy')
+    cl('EnableIntrinsicFunctions', map={'false': '-', 'true': ''}, prefix='/Oi')
+    cl('FavorSizeOrSpeed', map={'1': 't', '2': 's'}, prefix='/O')
+    cl('WholeProgramOptimization', map={'true': '/GL'})
+    cl('WarningLevel', prefix='/W')
+    cl('WarnAsError', map={'true': '/WX'})
+    cl('DebugInformationFormat',
+        map={'1': '7', '3': 'i', '4': 'I'}, prefix='/Z')
+    cl('RuntimeTypeInfo', map={'true': '/GR', 'false': '/GR-'})
+    cl('EnableFunctionLevelLinking', map={'true': '/Gy', 'false': '/Gy-'})
+    cl('MinimalRebuild', map={'true': '/Gm'})
+    cl('BufferSecurityCheck', map={'true': '/GS', 'false': '/GS-'})
+    cl('BasicRuntimeChecks', map={'1': 's', '2': 'u', '3': '1'}, prefix='/RTC')
+    cl('RuntimeLibrary',
+        map={'0': 'T', '1': 'Td', '2': 'D', '3': 'Dd'}, prefix='/M')
+    cl('ExceptionHandling', map={'1': 'sc','2': 'a'}, prefix='/EH')
+    cl('DefaultCharIsUnsigned', map={'true': '/J'})
+    cl('TreatWChar_tAsBuiltInType',
+        map={'false': '-', 'true': ''}, prefix='/Zc:wchar_t')
+    cl('EnablePREfast', map={'true': '/analyze'})
+    cl('AdditionalOptions', prefix='')
+    cflags.extend(['/FI' + f for f in self._Setting(
+        ('VCCLCompilerTool', 'ForcedIncludeFiles'), config, default=[])])
+    if self.vs_version.short_name in ('2013', '2013e'):
+      # New flag required in 2013 to maintain previous PDB behavior.
+      cflags.append('/FS')
+    # ninja handles parallelism by itself, don't have the compiler do it too.
+    cflags = filter(lambda x: not x.startswith('/MP'), cflags)
+    return cflags
+
+  def GetPrecompiledHeader(self, config, gyp_to_build_path):
+    """Returns an object that handles the generation of precompiled header
+    build steps."""
+    config = self._TargetConfig(config)
+    return _PchHelper(self, config, gyp_to_build_path)
+
+  def _GetPchFlags(self, config, extension):
+    """Get the flags to be added to the cflags for precompiled header support.
+    """
+    config = self._TargetConfig(config)
+    # The PCH is only built once by a particular source file. Usage of PCH must
+    # only be for the same language (i.e. C vs. C++), so only include the pch
+    # flags when the language matches.
+    if self.msvs_precompiled_header[config]:
+      source_ext = os.path.splitext(self.msvs_precompiled_source[config])[1]
+      if _LanguageMatchesForPch(source_ext, extension):
+        pch = os.path.split(self.msvs_precompiled_header[config])[1]
+        return ['/Yu' + pch, '/FI' + pch, '/Fp${pchprefix}.' + pch + '.pch']
+    return  []
+
+  def GetCflagsC(self, config):
+    """Returns the flags that need to be added to .c compilations."""
+    config = self._TargetConfig(config)
+    return self._GetPchFlags(config, '.c')
+
+  def GetCflagsCC(self, config):
+    """Returns the flags that need to be added to .cc compilations."""
+    config = self._TargetConfig(config)
+    return ['/TP'] + self._GetPchFlags(config, '.cc')
+
+  def _GetAdditionalLibraryDirectories(self, root, config, gyp_to_build_path):
+    """Get and normalize the list of paths in AdditionalLibraryDirectories
+    setting."""
+    config = self._TargetConfig(config)
+    libpaths = self._Setting((root, 'AdditionalLibraryDirectories'),
+                             config, default=[])
+    libpaths = [os.path.normpath(
+                    gyp_to_build_path(self.ConvertVSMacros(p, config=config)))
+                for p in libpaths]
+    return ['/LIBPATH:"' + p + '"' for p in libpaths]
+
+  def GetLibFlags(self, config, gyp_to_build_path):
+    """Returns the flags that need to be added to lib commands."""
+    config = self._TargetConfig(config)
+    libflags = []
+    lib = self._GetWrapper(self, self.msvs_settings[config],
+                          'VCLibrarianTool', append=libflags)
+    libflags.extend(self._GetAdditionalLibraryDirectories(
+        'VCLibrarianTool', config, gyp_to_build_path))
+    lib('LinkTimeCodeGeneration', map={'true': '/LTCG'})
+    lib('TargetMachine', map={'1': 'X86', '17': 'X64'}, prefix='/MACHINE:')
+    lib('AdditionalOptions')
+    return libflags
+
+  def GetDefFile(self, gyp_to_build_path):
+    """Returns the .def file from sources, if any.  Otherwise returns None."""
+    spec = self.spec
+    if spec['type'] in ('shared_library', 'loadable_module', 'executable'):
+      def_files = [s for s in spec.get('sources', []) if s.endswith('.def')]
+      if len(def_files) == 1:
+        return gyp_to_build_path(def_files[0])
+      elif len(def_files) > 1:
+        raise Exception("Multiple .def files")
+    return None
+
+  def _GetDefFileAsLdflags(self, ldflags, gyp_to_build_path):
+    """.def files get implicitly converted to a ModuleDefinitionFile for the
+    linker in the VS generator. Emulate that behaviour here."""
+    def_file = self.GetDefFile(gyp_to_build_path)
+    if def_file:
+      ldflags.append('/DEF:"%s"' % def_file)
+
+  def GetPGDName(self, config, expand_special):
+    """Gets the explicitly overridden pgd name for a target or returns None
+    if it's not overridden."""
+    config = self._TargetConfig(config)
+    output_file = self._Setting(
+        ('VCLinkerTool', 'ProfileGuidedDatabase'), config)
+    if output_file:
+      output_file = expand_special(self.ConvertVSMacros(
+          output_file, config=config))
+    return output_file
+
+  def GetLdflags(self, config, gyp_to_build_path, expand_special,
+                 manifest_base_name, output_name, is_executable, build_dir):
+    """Returns the flags that need to be added to link commands, and the
+    manifest files."""
+    config = self._TargetConfig(config)
+    ldflags = []
+    ld = self._GetWrapper(self, self.msvs_settings[config],
+                          'VCLinkerTool', append=ldflags)
+    self._GetDefFileAsLdflags(ldflags, gyp_to_build_path)
+    ld('GenerateDebugInformation', map={'true': '/DEBUG'})
+    ld('TargetMachine', map={'1': 'X86', '17': 'X64'}, prefix='/MACHINE:')
+    ldflags.extend(self._GetAdditionalLibraryDirectories(
+        'VCLinkerTool', config, gyp_to_build_path))
+    ld('DelayLoadDLLs', prefix='/DELAYLOAD:')
+    ld('TreatLinkerWarningAsErrors', prefix='/WX',
+       map={'true': '', 'false': ':NO'})
+    out = self.GetOutputName(config, expand_special)
+    if out:
+      ldflags.append('/OUT:' + out)
+    pdb = self.GetPDBName(config, expand_special, output_name + '.pdb')
+    if pdb:
+      ldflags.append('/PDB:' + pdb)
+    pgd = self.GetPGDName(config, expand_special)
+    if pgd:
+      ldflags.append('/PGD:' + pgd)
+    map_file = self.GetMapFileName(config, expand_special)
+    ld('GenerateMapFile', map={'true': '/MAP:' + map_file if map_file
+        else '/MAP'})
+    ld('MapExports', map={'true': '/MAPINFO:EXPORTS'})
+    ld('AdditionalOptions', prefix='')
+
+    minimum_required_version = self._Setting(
+        ('VCLinkerTool', 'MinimumRequiredVersion'), config, default='')
+    if minimum_required_version:
+      minimum_required_version = ',' + minimum_required_version
+    ld('SubSystem',
+       map={'1': 'CONSOLE%s' % minimum_required_version,
+            '2': 'WINDOWS%s' % minimum_required_version},
+       prefix='/SUBSYSTEM:')
+
+    ld('TerminalServerAware', map={'1': ':NO', '2': ''}, prefix='/TSAWARE')
+    ld('LinkIncremental', map={'1': ':NO', '2': ''}, prefix='/INCREMENTAL')
+    ld('BaseAddress', prefix='/BASE:')
+    ld('FixedBaseAddress', map={'1': ':NO', '2': ''}, prefix='/FIXED')
+    ld('RandomizedBaseAddress',
+        map={'1': ':NO', '2': ''}, prefix='/DYNAMICBASE')
+    ld('DataExecutionPrevention',
+        map={'1': ':NO', '2': ''}, prefix='/NXCOMPAT')
+    ld('OptimizeReferences', map={'1': 'NOREF', '2': 'REF'}, prefix='/OPT:')
+    ld('ForceSymbolReferences', prefix='/INCLUDE:')
+    ld('EnableCOMDATFolding', map={'1': 'NOICF', '2': 'ICF'}, prefix='/OPT:')
+    ld('LinkTimeCodeGeneration',
+        map={'1': '', '2': ':PGINSTRUMENT', '3': ':PGOPTIMIZE',
+             '4': ':PGUPDATE'},
+        prefix='/LTCG')
+    ld('IgnoreDefaultLibraryNames', prefix='/NODEFAULTLIB:')
+    ld('ResourceOnlyDLL', map={'true': '/NOENTRY'})
+    ld('EntryPointSymbol', prefix='/ENTRY:')
+    ld('Profile', map={'true': '/PROFILE'})
+    ld('LargeAddressAware',
+        map={'1': ':NO', '2': ''}, prefix='/LARGEADDRESSAWARE')
+    # TODO(scottmg): This should sort of be somewhere else (not really a flag).
+    ld('AdditionalDependencies', prefix='')
+
+    # If the base address is not specifically controlled, DYNAMICBASE should
+    # be on by default.
+    base_flags = filter(lambda x: 'DYNAMICBASE' in x or x == '/FIXED',
+                        ldflags)
+    if not base_flags:
+      ldflags.append('/DYNAMICBASE')
+
+    # If the NXCOMPAT flag has not been specified, default to on. Despite the
+    # documentation that says this only defaults to on when the subsystem is
+    # Vista or greater (which applies to the linker), the IDE defaults it on
+    # unless it's explicitly off.
+    if not filter(lambda x: 'NXCOMPAT' in x, ldflags):
+      ldflags.append('/NXCOMPAT')
+
+    have_def_file = filter(lambda x: x.startswith('/DEF:'), ldflags)
+    manifest_flags, intermediate_manifest, manifest_files = \
+        self._GetLdManifestFlags(config, manifest_base_name, gyp_to_build_path,
+                                 is_executable and not have_def_file, build_dir)
+    ldflags.extend(manifest_flags)
+    return ldflags, intermediate_manifest, manifest_files
+
+  def _GetLdManifestFlags(self, config, name, gyp_to_build_path,
+                          allow_isolation, build_dir):
+    """Returns a 3-tuple:
+    - the set of flags that need to be added to the link to generate
+      a default manifest
+    - the intermediate manifest that the linker will generate that should be
+      used to assert it doesn't add anything to the merged one.
+    - the list of all the manifest files to be merged by the manifest tool and
+      included into the link."""
+    generate_manifest = self._Setting(('VCLinkerTool', 'GenerateManifest'),
+                                      config,
+                                      default='true')
+    if generate_manifest != 'true':
+      # This means not only that the linker should not generate the intermediate
+      # manifest but also that the manifest tool should do nothing even when
+      # additional manifests are specified.
+      return ['/MANIFEST:NO'], [], []
+
+    output_name = name + '.intermediate.manifest'
+    flags = [
+      '/MANIFEST',
+      '/ManifestFile:' + output_name,
+    ]
+
+    # Instead of using the MANIFESTUAC flags, we generate a .manifest to
+    # include into the list of manifests. This allows us to avoid the need to
+    # do two passes during linking. The /MANIFEST flag and /ManifestFile are
+    # still used, and the intermediate manifest is used to assert that the
+    # final manifest we get from merging all the additional manifest files
+    # (plus the one we generate here) isn't modified by merging the
+    # intermediate into it.
+
+    # Always NO, because we generate a manifest file that has what we want.
+    flags.append('/MANIFESTUAC:NO')
+
+    config = self._TargetConfig(config)
+    enable_uac = self._Setting(('VCLinkerTool', 'EnableUAC'), config,
+                               default='true')
+    manifest_files = []
+    generated_manifest_outer = \
+"<?xml version='1.0' encoding='UTF-8' standalone='yes'?>" \
+"<assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>%s" \
+"</assembly>"
+    if enable_uac == 'true':
+      execution_level = self._Setting(('VCLinkerTool', 'UACExecutionLevel'),
+                                      config, default='0')
+      execution_level_map = {
+        '0': 'asInvoker',
+        '1': 'highestAvailable',
+        '2': 'requireAdministrator'
+      }
+
+      ui_access = self._Setting(('VCLinkerTool', 'UACUIAccess'), config,
+                                default='false')
+
+      inner = '''
+<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
+  <security>
+    <requestedPrivileges>
+      <requestedExecutionLevel level='%s' uiAccess='%s' />
+    </requestedPrivileges>
+  </security>
+</trustInfo>''' % (execution_level_map[execution_level], ui_access)
+    else:
+      inner = ''
+
+    generated_manifest_contents = generated_manifest_outer % inner
+    generated_name = name + '.generated.manifest'
+    # Need to join with the build_dir here as we're writing it during
+    # generation time, but we return the un-joined version because the build
+    # will occur in that directory. We only write the file if the contents
+    # have changed so that simply regenerating the project files doesn't
+    # cause a relink.
+    build_dir_generated_name = os.path.join(build_dir, generated_name)
+    gyp.common.EnsureDirExists(build_dir_generated_name)
+    f = gyp.common.WriteOnDiff(build_dir_generated_name)
+    f.write(generated_manifest_contents)
+    f.close()
+    manifest_files = [generated_name]
+
+    if allow_isolation:
+      flags.append('/ALLOWISOLATION')
+
+    manifest_files += self._GetAdditionalManifestFiles(config,
+                                                       gyp_to_build_path)
+    return flags, output_name, manifest_files
+
+  def _GetAdditionalManifestFiles(self, config, gyp_to_build_path):
+    """Gets additional manifest files that are added to the default one
+    generated by the linker."""
+    files = self._Setting(('VCManifestTool', 'AdditionalManifestFiles'), config,
+                          default=[])
+    if isinstance(files, str):
+      files = files.split(';')
+    return [os.path.normpath(
+                gyp_to_build_path(self.ConvertVSMacros(f, config=config)))
+            for f in files]
+
+  def IsUseLibraryDependencyInputs(self, config):
+    """Returns whether the target should be linked via Use Library Dependency
+    Inputs (using component .objs of a given .lib)."""
+    config = self._TargetConfig(config)
+    uldi = self._Setting(('VCLinkerTool', 'UseLibraryDependencyInputs'), config)
+    return uldi == 'true'
+
+  def IsEmbedManifest(self, config):
+    """Returns whether manifest should be linked into binary."""
+    config = self._TargetConfig(config)
+    embed = self._Setting(('VCManifestTool', 'EmbedManifest'), config,
+                          default='true')
+    return embed == 'true'
+
+  def IsLinkIncremental(self, config):
+    """Returns whether the target should be linked incrementally."""
+    config = self._TargetConfig(config)
+    link_inc = self._Setting(('VCLinkerTool', 'LinkIncremental'), config)
+    return link_inc != '1'
+
+  def GetRcflags(self, config, gyp_to_ninja_path):
+    """Returns the flags that need to be added to invocations of the resource
+    compiler."""
+    config = self._TargetConfig(config)
+    rcflags = []
+    rc = self._GetWrapper(self, self.msvs_settings[config],
+        'VCResourceCompilerTool', append=rcflags)
+    rc('AdditionalIncludeDirectories', map=gyp_to_ninja_path, prefix='/I')
+    rcflags.append('/I' + gyp_to_ninja_path('.'))
+    rc('PreprocessorDefinitions', prefix='/d')
+    # /l arg must be in hex without leading '0x'
+    rc('Culture', prefix='/l', map=lambda x: hex(int(x))[2:])
+    return rcflags
+
+  def BuildCygwinBashCommandLine(self, args, path_to_base):
+    """Build a command line that runs args via cygwin bash. We assume that all
+    incoming paths are in Windows normpath'd form, so they need to be
+    converted to posix style for the part of the command line that's passed to
+    bash. We also have to do some Visual Studio macro emulation here because
+    various rules use magic VS names for things. Also note that rules that
+    contain ninja variables cannot be fixed here (for example ${source}), so
+    the outer generator needs to make sure that the paths that are written out
+    are in posix style, if the command line will be used here."""
+    cygwin_dir = os.path.normpath(
+        os.path.join(path_to_base, self.msvs_cygwin_dirs[0]))
+    cd = ('cd %s' % path_to_base).replace('\\', '/')
+    args = [a.replace('\\', '/').replace('"', '\\"') for a in args]
+    args = ["'%s'" % a.replace("'", "'\\''") for a in args]
+    bash_cmd = ' '.join(args)
+    cmd = (
+        'call "%s\\setup_env.bat" && set CYGWIN=nontsec && ' % cygwin_dir +
+        'bash -c "%s ; %s"' % (cd, bash_cmd))
+    return cmd
+
+  def IsRuleRunUnderCygwin(self, rule):
+    """Determine if an action should be run under cygwin. If the variable is
+    unset, or set to 1 we use cygwin."""
+    return int(rule.get('msvs_cygwin_shell',
+                        self.spec.get('msvs_cygwin_shell', 1))) != 0
+
+  def _HasExplicitRuleForExtension(self, spec, extension):
+    """Determine if there's an explicit rule for a particular extension."""
+    for rule in spec.get('rules', []):
+      if rule['extension'] == extension:
+        return True
+    return False
+
+  def HasExplicitIdlRules(self, spec):
+    """Determine if there's an explicit rule for idl files. When there isn't we
+    need to generate implicit rules to build MIDL .idl files."""
+    return self._HasExplicitRuleForExtension(spec, 'idl')
+
+  def HasExplicitAsmRules(self, spec):
+    """Determine if there's an explicit rule for asm files. When there isn't we
+    need to generate implicit rules to assemble .asm files."""
+    return self._HasExplicitRuleForExtension(spec, 'asm')
+
+  def GetIdlBuildData(self, source, config):
+    """Determine the implicit outputs for an idl file. Returns output
+    directory, outputs, and variables and flags that are required."""
+    config = self._TargetConfig(config)
+    midl_get = self._GetWrapper(self, self.msvs_settings[config], 'VCMIDLTool')
+    def midl(name, default=None):
+      return self.ConvertVSMacros(midl_get(name, default=default),
+                                  config=config)
+    tlb = midl('TypeLibraryName', default='${root}.tlb')
+    header = midl('HeaderFileName', default='${root}.h')
+    dlldata = midl('DLLDataFileName', default='dlldata.c')
+    iid = midl('InterfaceIdentifierFileName', default='${root}_i.c')
+    proxy = midl('ProxyFileName', default='${root}_p.c')
+    # Note that .tlb is not included in the outputs as it is not always
+    # generated depending on the content of the input idl file.
+    outdir = midl('OutputDirectory', default='')
+    output = [header, dlldata, iid, proxy]
+    variables = [('tlb', tlb),
+                 ('h', header),
+                 ('dlldata', dlldata),
+                 ('iid', iid),
+                 ('proxy', proxy)]
+    # TODO(scottmg): Are there configuration settings to set these flags?
+    target_platform = 'win32' if self.GetArch(config) == 'x86' else 'x64'
+    flags = ['/char', 'signed', '/env', target_platform, '/Oicf']
+    return outdir, output, variables, flags
+
+
+def _LanguageMatchesForPch(source_ext, pch_source_ext):
+  c_exts = ('.c',)
+  cc_exts = ('.cc', '.cxx', '.cpp')
+  return ((source_ext in c_exts and pch_source_ext in c_exts) or
+          (source_ext in cc_exts and pch_source_ext in cc_exts))
+
+
+class PrecompiledHeader(object):
+  """Helper to generate dependencies and build rules to handle generation of
+  precompiled headers. Interface matches the GCH handler in xcode_emulation.py.
+  """
+  def __init__(
+      self, settings, config, gyp_to_build_path, gyp_to_unique_output, obj_ext):
+    self.settings = settings
+    self.config = config
+    pch_source = self.settings.msvs_precompiled_source[self.config]
+    self.pch_source = gyp_to_build_path(pch_source)
+    filename, _ = os.path.splitext(pch_source)
+    self.output_obj = gyp_to_unique_output(filename + obj_ext).lower()
+
+  def _PchHeader(self):
+    """Get the header that will appear in an #include line for all source
+    files."""
+    return os.path.split(self.settings.msvs_precompiled_header[self.config])[1]
+
+  def GetObjDependencies(self, sources, objs, arch):
+    """Given a list of sources files and the corresponding object files,
+    returns a list of the pch files that should be depended upon. The
+    additional wrapping in the return value is for interface compatability
+    with make.py on Mac, and xcode_emulation.py."""
+    assert arch is None
+    if not self._PchHeader():
+      return []
+    pch_ext = os.path.splitext(self.pch_source)[1]
+    for source in sources:
+      if _LanguageMatchesForPch(os.path.splitext(source)[1], pch_ext):
+        return [(None, None, self.output_obj)]
+    return []
+
+  def GetPchBuildCommands(self, arch):
+    """Not used on Windows as there are no additional build steps required
+    (instead, existing steps are modified in GetFlagsModifications below)."""
+    return []
+
+  def GetFlagsModifications(self, input, output, implicit, command,
+                            cflags_c, cflags_cc, expand_special):
+    """Get the modified cflags and implicit dependencies that should be used
+    for the pch compilation step."""
+    if input == self.pch_source:
+      pch_output = ['/Yc' + self._PchHeader()]
+      if command == 'cxx':
+        return ([('cflags_cc', map(expand_special, cflags_cc + pch_output))],
+                self.output_obj, [])
+      elif command == 'cc':
+        return ([('cflags_c', map(expand_special, cflags_c + pch_output))],
+                self.output_obj, [])
+    return [], output, implicit
+
+
+vs_version = None
+def GetVSVersion(generator_flags):
+  global vs_version
+  if not vs_version:
+    vs_version = gyp.MSVSVersion.SelectVisualStudioVersion(
+        generator_flags.get('msvs_version', 'auto'))
+  return vs_version
+
+def _GetVsvarsSetupArgs(generator_flags, arch):
+  vs = GetVSVersion(generator_flags)
+  return vs.SetupScript()
+
+def ExpandMacros(string, expansions):
+  """Expand $(Variable) per expansions dict. See MsvsSettings.GetVSMacroEnv
+  for the canonical way to retrieve a suitable dict."""
+  if '$' in string:
+    for old, new in expansions.iteritems():
+      assert '$(' not in new, new
+      string = string.replace(old, new)
+  return string
+
+def _ExtractImportantEnvironment(output_of_set):
+  """Extracts environment variables required for the toolchain to run from
+  a textual dump output by the cmd.exe 'set' command."""
+  envvars_to_save = (
+      'goma_.*', # TODO(scottmg): This is ugly, but needed for goma.
+      'include',
+      'lib',
+      'libpath',
+      'path',
+      'pathext',
+      'systemroot',
+      'temp',
+      'tmp',
+      )
+  env = {}
+  for line in output_of_set.splitlines():
+    for envvar in envvars_to_save:
+      if re.match(envvar + '=', line.lower()):
+        var, setting = line.split('=', 1)
+        if envvar == 'path':
+          # Our own rules (for running gyp-win-tool) and other actions in
+          # Chromium rely on python being in the path. Add the path to this
+          # python here so that if it's not in the path when ninja is run
+          # later, python will still be found.
+          setting = os.path.dirname(sys.executable) + os.pathsep + setting
+        env[var.upper()] = setting
+        break
+  for required in ('SYSTEMROOT', 'TEMP', 'TMP'):
+    if required not in env:
+      raise Exception('Environment variable "%s" '
+                      'required to be set to valid path' % required)
+  return env
+
+def _FormatAsEnvironmentBlock(envvar_dict):
+  """Format as an 'environment block' directly suitable for CreateProcess.
+  Briefly this is a list of key=value\0, terminated by an additional \0. See
+  CreateProcess documentation for more details."""
+  block = ''
+  nul = '\0'
+  for key, value in envvar_dict.iteritems():
+    block += key + '=' + value + nul
+  block += nul
+  return block
+
+def _ExtractCLPath(output_of_where):
+  """Gets the path to cl.exe based on the output of calling the environment
+  setup batch file, followed by the equivalent of `where`."""
+  # Take the first line, as that's the first found in the PATH.
+  for line in output_of_where.strip().splitlines():
+    if line.startswith('LOC:'):
+      return line[len('LOC:'):].strip()
+
+def GenerateEnvironmentFiles(toplevel_build_dir, generator_flags, open_out):
+  """It's not sufficient to have the absolute path to the compiler, linker,
+  etc. on Windows, as those tools rely on .dlls being in the PATH. We also
+  need to support both x86 and x64 compilers within the same build (to support
+  msvs_target_platform hackery). Different architectures require a different
+  compiler binary, and different supporting environment variables (INCLUDE,
+  LIB, LIBPATH). So, we extract the environment here, wrap all invocations
+  of compiler tools (cl, link, lib, rc, midl, etc.) via win_tool.py which
+  sets up the environment, and then we do not prefix the compiler with
+  an absolute path, instead preferring something like "cl.exe" in the rule
+  which will then run whichever the environment setup has put in the path.
+  When the following procedure to generate environment files does not
+  meet your requirement (e.g. for custom toolchains), you can pass
+  "-G ninja_use_custom_environment_files" to the gyp to suppress file
+  generation and use custom environment files prepared by yourself."""
+  archs = ('x86', 'x64')
+  if generator_flags.get('ninja_use_custom_environment_files', 0):
+    cl_paths = {}
+    for arch in archs:
+      cl_paths[arch] = 'cl.exe'
+    return cl_paths
+  vs = GetVSVersion(generator_flags)
+  cl_paths = {}
+  for arch in archs:
+    # Extract environment variables for subprocesses.
+    args = vs.SetupScript(arch)
+    args.extend(('&&', 'set'))
+    popen = subprocess.Popen(
+        args, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    variables, _ = popen.communicate()
+    env = _ExtractImportantEnvironment(variables)
+    env_block = _FormatAsEnvironmentBlock(env)
+    f = open_out(os.path.join(toplevel_build_dir, 'environment.' + arch), 'wb')
+    f.write(env_block)
+    f.close()
+
+    # Find cl.exe location for this architecture.
+    args = vs.SetupScript(arch)
+    args.extend(('&&',
+      'for', '%i', 'in', '(cl.exe)', 'do', '@echo', 'LOC:%~$PATH:i'))
+    popen = subprocess.Popen(args, shell=True, stdout=subprocess.PIPE)
+    output, _ = popen.communicate()
+    cl_paths[arch] = _ExtractCLPath(output)
+  return cl_paths
+
+def VerifyMissingSources(sources, build_dir, generator_flags, gyp_to_ninja):
+  """Emulate behavior of msvs_error_on_missing_sources present in the msvs
+  generator: Check that all regular source files, i.e. not created at run time,
+  exist on disk. Missing files cause needless recompilation when building via
+  VS, and we want this check to match for people/bots that build using ninja,
+  so they're not surprised when the VS build fails."""
+  if int(generator_flags.get('msvs_error_on_missing_sources', 0)):
+    no_specials = filter(lambda x: '$' not in x, sources)
+    relative = [os.path.join(build_dir, gyp_to_ninja(s)) for s in no_specials]
+    missing = filter(lambda x: not os.path.exists(x), relative)
+    if missing:
+      # They'll look like out\Release\..\..\stuff\things.cc, so normalize the
+      # path for a slightly less crazy looking output.
+      cleaned_up = [os.path.normpath(x) for x in missing]
+      raise Exception('Missing input files:\n%s' % '\n'.join(cleaned_up))
+
+# Sets some values in default_variables, which are required for many
+# generators, run on Windows.
+def CalculateCommonVariables(default_variables, params):
+  generator_flags = params.get('generator_flags', {})
+
+  # Set a variable so conditions can be based on msvs_version.
+  msvs_version = gyp.msvs_emulation.GetVSVersion(generator_flags)
+  default_variables['MSVS_VERSION'] = msvs_version.ShortName()
+
+  # To determine processor word size on Windows, in addition to checking
+  # PROCESSOR_ARCHITECTURE (which reflects the word size of the current
+  # process), it is also necessary to check PROCESSOR_ARCHITEW6432 (which
+  # contains the actual word size of the system when running thru WOW64).
+  if ('64' in os.environ.get('PROCESSOR_ARCHITECTURE', '') or
+      '64' in os.environ.get('PROCESSOR_ARCHITEW6432', '')):
+    default_variables['MSVS_OS_BITS'] = 64
+  else:
+    default_variables['MSVS_OS_BITS'] = 32
diff --git a/deps/gyp/pylib/gyp/ninja_syntax.py b/deps/gyp/pylib/gyp/ninja_syntax.py
new file mode 100644
index 0000000000..d2948f06c0
--- /dev/null
+++ b/deps/gyp/pylib/gyp/ninja_syntax.py
@@ -0,0 +1,160 @@
+# This file comes from
+#   https://github.com/martine/ninja/blob/master/misc/ninja_syntax.py
+# Do not edit!  Edit the upstream one instead.
+
+"""Python module for generating .ninja files.
+
+Note that this is emphatically not a required piece of Ninja; it's
+just a helpful utility for build-file-generation systems that already
+use Python.
+"""
+
+import textwrap
+import re
+
+def escape_path(word):
+    return word.replace('$ ','$$ ').replace(' ','$ ').replace(':', '$:')
+
+class Writer(object):
+    def __init__(self, output, width=78):
+        self.output = output
+        self.width = width
+
+    def newline(self):
+        self.output.write('\n')
+
+    def comment(self, text):
+        for line in textwrap.wrap(text, self.width - 2):
+            self.output.write('# ' + line + '\n')
+
+    def variable(self, key, value, indent=0):
+        if value is None:
+            return
+        if isinstance(value, list):
+            value = ' '.join(filter(None, value))  # Filter out empty strings.
+        self._line('%s = %s' % (key, value), indent)
+
+    def pool(self, name, depth):
+        self._line('pool %s' % name)
+        self.variable('depth', depth, indent=1)
+
+    def rule(self, name, command, description=None, depfile=None,
+             generator=False, pool=None, restat=False, rspfile=None,
+             rspfile_content=None, deps=None):
+        self._line('rule %s' % name)
+        self.variable('command', command, indent=1)
+        if description:
+            self.variable('description', description, indent=1)
+        if depfile:
+            self.variable('depfile', depfile, indent=1)
+        if generator:
+            self.variable('generator', '1', indent=1)
+        if pool:
+            self.variable('pool', pool, indent=1)
+        if restat:
+            self.variable('restat', '1', indent=1)
+        if rspfile:
+            self.variable('rspfile', rspfile, indent=1)
+        if rspfile_content:
+            self.variable('rspfile_content', rspfile_content, indent=1)
+        if deps:
+            self.variable('deps', deps, indent=1)
+
+    def build(self, outputs, rule, inputs=None, implicit=None, order_only=None,
+              variables=None):
+        outputs = self._as_list(outputs)
+        all_inputs = self._as_list(inputs)[:]
+        out_outputs = list(map(escape_path, outputs))
+        all_inputs = list(map(escape_path, all_inputs))
+
+        if implicit:
+            implicit = map(escape_path, self._as_list(implicit))
+            all_inputs.append('|')
+            all_inputs.extend(implicit)
+        if order_only:
+            order_only = map(escape_path, self._as_list(order_only))
+            all_inputs.append('||')
+            all_inputs.extend(order_only)
+
+        self._line('build %s: %s' % (' '.join(out_outputs),
+                                        ' '.join([rule] + all_inputs)))
+
+        if variables:
+            if isinstance(variables, dict):
+                iterator = iter(variables.items())
+            else:
+                iterator = iter(variables)
+
+            for key, val in iterator:
+                self.variable(key, val, indent=1)
+
+        return outputs
+
+    def include(self, path):
+        self._line('include %s' % path)
+
+    def subninja(self, path):
+        self._line('subninja %s' % path)
+
+    def default(self, paths):
+        self._line('default %s' % ' '.join(self._as_list(paths)))
+
+    def _count_dollars_before_index(self, s, i):
+      """Returns the number of '$' characters right in front of s[i]."""
+      dollar_count = 0
+      dollar_index = i - 1
+      while dollar_index > 0 and s[dollar_index] == '$':
+        dollar_count += 1
+        dollar_index -= 1
+      return dollar_count
+
+    def _line(self, text, indent=0):
+        """Write 'text' word-wrapped at self.width characters."""
+        leading_space = '  ' * indent
+        while len(leading_space) + len(text) > self.width:
+            # The text is too wide; wrap if possible.
+
+            # Find the rightmost space that would obey our width constraint and
+            # that's not an escaped space.
+            available_space = self.width - len(leading_space) - len(' $')
+            space = available_space
+            while True:
+              space = text.rfind(' ', 0, space)
+              if space < 0 or \
+                 self._count_dollars_before_index(text, space) % 2 == 0:
+                break
+
+            if space < 0:
+                # No such space; just use the first unescaped space we can find.
+                space = available_space - 1
+                while True:
+                  space = text.find(' ', space + 1)
+                  if space < 0 or \
+                     self._count_dollars_before_index(text, space) % 2 == 0:
+                    break
+            if space < 0:
+                # Give up on breaking.
+                break
+
+            self.output.write(leading_space + text[0:space] + ' $\n')
+            text = text[space+1:]
+
+            # Subsequent lines are continuations, so indent them.
+            leading_space = '  ' * (indent+2)
+
+        self.output.write(leading_space + text + '\n')
+
+    def _as_list(self, input):
+        if input is None:
+            return []
+        if isinstance(input, list):
+            return input
+        return [input]
+
+
+def escape(string):
+    """Escape a string such that it can be embedded into a Ninja file without
+    further interpretation."""
+    assert '\n' not in string, 'Ninja syntax does not allow newlines'
+    # We only have one special metacharacter: '$'.
+    return string.replace('$', '$$')
diff --git a/deps/gyp/pylib/gyp/ordered_dict.py b/deps/gyp/pylib/gyp/ordered_dict.py
new file mode 100644
index 0000000000..a1e89f9199
--- /dev/null
+++ b/deps/gyp/pylib/gyp/ordered_dict.py
@@ -0,0 +1,289 @@
+# Unmodified from http://code.activestate.com/recipes/576693/
+# other than to add MIT license header (as specified on page, but not in code).
+# Linked from Python documentation here:
+# http://docs.python.org/2/library/collections.html#collections.OrderedDict
+#
+# This should be deleted once Py2.7 is available on all bots, see
+# http://crbug.com/241769.
+#
+# Copyright (c) 2009 Raymond Hettinger.
+#
+# 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.
+
+# Backport of OrderedDict() class that runs on Python 2.4, 2.5, 2.6, 2.7 and pypy.
+# Passes Python2.7's test suite and incorporates all the latest updates.
+
+try:
+    from thread import get_ident as _get_ident
+except ImportError:
+    from dummy_thread import get_ident as _get_ident
+
+try:
+    from _abcoll import KeysView, ValuesView, ItemsView
+except ImportError:
+    pass
+
+
+class OrderedDict(dict):
+    'Dictionary that remembers insertion order'
+    # An inherited dict maps keys to values.
+    # The inherited dict provides __getitem__, __len__, __contains__, and get.
+    # The remaining methods are order-aware.
+    # Big-O running times for all methods are the same as for regular dictionaries.
+
+    # The internal self.__map dictionary maps keys to links in a doubly linked list.
+    # The circular doubly linked list starts and ends with a sentinel element.
+    # The sentinel element never gets deleted (this simplifies the algorithm).
+    # Each link is stored as a list of length three:  [PREV, NEXT, KEY].
+
+    def __init__(self, *args, **kwds):
+        '''Initialize an ordered dictionary.  Signature is the same as for
+        regular dictionaries, but keyword arguments are not recommended
+        because their insertion order is arbitrary.
+
+        '''
+        if len(args) > 1:
+            raise TypeError('expected at most 1 arguments, got %d' % len(args))
+        try:
+            self.__root
+        except AttributeError:
+            self.__root = root = []                     # sentinel node
+            root[:] = [root, root, None]
+            self.__map = {}
+        self.__update(*args, **kwds)
+
+    def __setitem__(self, key, value, dict_setitem=dict.__setitem__):
+        'od.__setitem__(i, y) <==> od[i]=y'
+        # Setting a new item creates a new link which goes at the end of the linked
+        # list, and the inherited dictionary is updated with the new key/value pair.
+        if key not in self:
+            root = self.__root
+            last = root[0]
+            last[1] = root[0] = self.__map[key] = [last, root, key]
+        dict_setitem(self, key, value)
+
+    def __delitem__(self, key, dict_delitem=dict.__delitem__):
+        'od.__delitem__(y) <==> del od[y]'
+        # Deleting an existing item uses self.__map to find the link which is
+        # then removed by updating the links in the predecessor and successor nodes.
+        dict_delitem(self, key)
+        link_prev, link_next, key = self.__map.pop(key)
+        link_prev[1] = link_next
+        link_next[0] = link_prev
+
+    def __iter__(self):
+        'od.__iter__() <==> iter(od)'
+        root = self.__root
+        curr = root[1]
+        while curr is not root:
+            yield curr[2]
+            curr = curr[1]
+
+    def __reversed__(self):
+        'od.__reversed__() <==> reversed(od)'
+        root = self.__root
+        curr = root[0]
+        while curr is not root:
+            yield curr[2]
+            curr = curr[0]
+
+    def clear(self):
+        'od.clear() -> None.  Remove all items from od.'
+        try:
+            for node in self.__map.itervalues():
+                del node[:]
+            root = self.__root
+            root[:] = [root, root, None]
+            self.__map.clear()
+        except AttributeError:
+            pass
+        dict.clear(self)
+
+    def popitem(self, last=True):
+        '''od.popitem() -> (k, v), return and remove a (key, value) pair.
+        Pairs are returned in LIFO order if last is true or FIFO order if false.
+
+        '''
+        if not self:
+            raise KeyError('dictionary is empty')
+        root = self.__root
+        if last:
+            link = root[0]
+            link_prev = link[0]
+            link_prev[1] = root
+            root[0] = link_prev
+        else:
+            link = root[1]
+            link_next = link[1]
+            root[1] = link_next
+            link_next[0] = root
+        key = link[2]
+        del self.__map[key]
+        value = dict.pop(self, key)
+        return key, value
+
+    # -- the following methods do not depend on the internal structure --
+
+    def keys(self):
+        'od.keys() -> list of keys in od'
+        return list(self)
+
+    def values(self):
+        'od.values() -> list of values in od'
+        return [self[key] for key in self]
+
+    def items(self):
+        'od.items() -> list of (key, value) pairs in od'
+        return [(key, self[key]) for key in self]
+
+    def iterkeys(self):
+        'od.iterkeys() -> an iterator over the keys in od'
+        return iter(self)
+
+    def itervalues(self):
+        'od.itervalues -> an iterator over the values in od'
+        for k in self:
+            yield self[k]
+
+    def iteritems(self):
+        'od.iteritems -> an iterator over the (key, value) items in od'
+        for k in self:
+            yield (k, self[k])
+
+    # Suppress 'OrderedDict.update: Method has no argument':
+    # pylint: disable=E0211
+    def update(*args, **kwds):
+        '''od.update(E, **F) -> None.  Update od from dict/iterable E and F.
+
+        If E is a dict instance, does:           for k in E: od[k] = E[k]
+        If E has a .keys() method, does:         for k in E.keys(): od[k] = E[k]
+        Or if E is an iterable of items, does:   for k, v in E: od[k] = v
+        In either case, this is followed by:     for k, v in F.items(): od[k] = v
+
+        '''
+        if len(args) > 2:
+            raise TypeError('update() takes at most 2 positional '
+                            'arguments (%d given)' % (len(args),))
+        elif not args:
+            raise TypeError('update() takes at least 1 argument (0 given)')
+        self = args[0]
+        # Make progressively weaker assumptions about "other"
+        other = ()
+        if len(args) == 2:
+            other = args[1]
+        if isinstance(other, dict):
+            for key in other:
+                self[key] = other[key]
+        elif hasattr(other, 'keys'):
+            for key in other.keys():
+                self[key] = other[key]
+        else:
+            for key, value in other:
+                self[key] = value
+        for key, value in kwds.items():
+            self[key] = value
+
+    __update = update  # let subclasses override update without breaking __init__
+
+    __marker = object()
+
+    def pop(self, key, default=__marker):
+        '''od.pop(k[,d]) -> v, remove specified key and return the corresponding value.
+        If key is not found, d is returned if given, otherwise KeyError is raised.
+
+        '''
+        if key in self:
+            result = self[key]
+            del self[key]
+            return result
+        if default is self.__marker:
+            raise KeyError(key)
+        return default
+
+    def setdefault(self, key, default=None):
+        'od.setdefault(k[,d]) -> od.get(k,d), also set od[k]=d if k not in od'
+        if key in self:
+            return self[key]
+        self[key] = default
+        return default
+
+    def __repr__(self, _repr_running={}):
+        'od.__repr__() <==> repr(od)'
+        call_key = id(self), _get_ident()
+        if call_key in _repr_running:
+            return '...'
+        _repr_running[call_key] = 1
+        try:
+            if not self:
+                return '%s()' % (self.__class__.__name__,)
+            return '%s(%r)' % (self.__class__.__name__, self.items())
+        finally:
+            del _repr_running[call_key]
+
+    def __reduce__(self):
+        'Return state information for pickling'
+        items = [[k, self[k]] for k in self]
+        inst_dict = vars(self).copy()
+        for k in vars(OrderedDict()):
+            inst_dict.pop(k, None)
+        if inst_dict:
+            return (self.__class__, (items,), inst_dict)
+        return self.__class__, (items,)
+
+    def copy(self):
+        'od.copy() -> a shallow copy of od'
+        return self.__class__(self)
+
+    @classmethod
+    def fromkeys(cls, iterable, value=None):
+        '''OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S
+        and values equal to v (which defaults to None).
+
+        '''
+        d = cls()
+        for key in iterable:
+            d[key] = value
+        return d
+
+    def __eq__(self, other):
+        '''od.__eq__(y) <==> od==y.  Comparison to another OD is order-sensitive
+        while comparison to a regular mapping is order-insensitive.
+
+        '''
+        if isinstance(other, OrderedDict):
+            return len(self)==len(other) and self.items() == other.items()
+        return dict.__eq__(self, other)
+
+    def __ne__(self, other):
+        return not self == other
+
+    # -- the following methods are only used in Python 2.7 --
+
+    def viewkeys(self):
+        "od.viewkeys() -> a set-like object providing a view on od's keys"
+        return KeysView(self)
+
+    def viewvalues(self):
+        "od.viewvalues() -> an object providing a view on od's values"
+        return ValuesView(self)
+
+    def viewitems(self):
+        "od.viewitems() -> a set-like object providing a view on od's items"
+        return ItemsView(self)
+
diff --git a/deps/gyp/pylib/gyp/win_tool.py b/deps/gyp/pylib/gyp/win_tool.py
new file mode 100755
index 0000000000..5872f0750c
--- /dev/null
+++ b/deps/gyp/pylib/gyp/win_tool.py
@@ -0,0 +1,292 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Utility functions for Windows builds.
+
+These functions are executed via gyp-win-tool when using the ninja generator.
+"""
+
+import os
+import re
+import shutil
+import subprocess
+import string
+import sys
+
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+
+# A regex matching an argument corresponding to the output filename passed to
+# link.exe.
+_LINK_EXE_OUT_ARG = re.compile('/OUT:(?P<out>.+)$', re.IGNORECASE)
+
+def main(args):
+  executor = WinTool()
+  exit_code = executor.Dispatch(args)
+  if exit_code is not None:
+    sys.exit(exit_code)
+
+
+class WinTool(object):
+  """This class performs all the Windows tooling steps. The methods can either
+  be executed directly, or dispatched from an argument list."""
+
+  def _UseSeparateMspdbsrv(self, env, args):
+    """Allows to use a unique instance of mspdbsrv.exe per linker instead of a
+    shared one."""
+    if len(args) < 1:
+      raise Exception("Not enough arguments")
+
+    if args[0] != 'link.exe':
+      return
+
+    # Use the output filename passed to the linker to generate an endpoint name
+    # for mspdbsrv.exe.
+    endpoint_name = None
+    for arg in args:
+      m = _LINK_EXE_OUT_ARG.match(arg)
+      if m:
+        endpoint_name = re.sub(r'\W+', '',
+            '%s_%d' % (m.group('out'), os.getpid()))
+        break
+
+    if endpoint_name is None:
+      return
+
+    # Adds the appropriate environment variable. This will be read by link.exe
+    # to know which instance of mspdbsrv.exe it should connect to (if it's
+    # not set then the default endpoint is used).
+    env['_MSPDBSRV_ENDPOINT_'] = endpoint_name
+
+  def Dispatch(self, args):
+    """Dispatches a string command to a method."""
+    if len(args) < 1:
+      raise Exception("Not enough arguments")
+
+    method = "Exec%s" % self._CommandifyName(args[0])
+    return getattr(self, method)(*args[1:])
+
+  def _CommandifyName(self, name_string):
+    """Transforms a tool name like recursive-mirror to RecursiveMirror."""
+    return name_string.title().replace('-', '')
+
+  def _GetEnv(self, arch):
+    """Gets the saved environment from a file for a given architecture."""
+    # The environment is saved as an "environment block" (see CreateProcess
+    # and msvs_emulation for details). We convert to a dict here.
+    # Drop last 2 NULs, one for list terminator, one for trailing vs. separator.
+    pairs = open(arch).read()[:-2].split('\0')
+    kvs = [item.split('=', 1) for item in pairs]
+    return dict(kvs)
+
+  def ExecStamp(self, path):
+    """Simple stamp command."""
+    open(path, 'w').close()
+
+  def ExecRecursiveMirror(self, source, dest):
+    """Emulation of rm -rf out && cp -af in out."""
+    if os.path.exists(dest):
+      if os.path.isdir(dest):
+        shutil.rmtree(dest)
+      else:
+        os.unlink(dest)
+    if os.path.isdir(source):
+      shutil.copytree(source, dest)
+    else:
+      shutil.copy2(source, dest)
+
+  def ExecLinkWrapper(self, arch, use_separate_mspdbsrv, *args):
+    """Filter diagnostic output from link that looks like:
+    '   Creating library ui.dll.lib and object ui.dll.exp'
+    This happens when there are exports from the dll or exe.
+    """
+    env = self._GetEnv(arch)
+    if use_separate_mspdbsrv == 'True':
+      self._UseSeparateMspdbsrv(env, args)
+    link = subprocess.Popen(args,
+                            shell=True,
+                            env=env,
+                            stdout=subprocess.PIPE,
+                            stderr=subprocess.STDOUT)
+    out, _ = link.communicate()
+    for line in out.splitlines():
+      if not line.startswith('   Creating library '):
+        print line
+    return link.returncode
+
+  def ExecLinkWithManifests(self, arch, embed_manifest, out, ldcmd, resname,
+                            mt, rc, intermediate_manifest, *manifests):
+    """A wrapper for handling creating a manifest resource and then executing
+    a link command."""
+    # The 'normal' way to do manifests is to have link generate a manifest
+    # based on gathering dependencies from the object files, then merge that
+    # manifest with other manifests supplied as sources, convert the merged
+    # manifest to a resource, and then *relink*, including the compiled
+    # version of the manifest resource. This breaks incremental linking, and
+    # is generally overly complicated. Instead, we merge all the manifests
+    # provided (along with one that includes what would normally be in the
+    # linker-generated one, see msvs_emulation.py), and include that into the
+    # first and only link. We still tell link to generate a manifest, but we
+    # only use that to assert that our simpler process did not miss anything.
+    variables = {
+      'python': sys.executable,
+      'arch': arch,
+      'out': out,
+      'ldcmd': ldcmd,
+      'resname': resname,
+      'mt': mt,
+      'rc': rc,
+      'intermediate_manifest': intermediate_manifest,
+      'manifests': ' '.join(manifests),
+    }
+    add_to_ld = ''
+    if manifests:
+      subprocess.check_call(
+          '%(python)s gyp-win-tool manifest-wrapper %(arch)s %(mt)s -nologo '
+          '-manifest %(manifests)s -out:%(out)s.manifest' % variables)
+      if embed_manifest == 'True':
+        subprocess.check_call(
+            '%(python)s gyp-win-tool manifest-to-rc %(arch)s %(out)s.manifest'
+          ' %(out)s.manifest.rc %(resname)s' % variables)
+        subprocess.check_call(
+            '%(python)s gyp-win-tool rc-wrapper %(arch)s %(rc)s '
+            '%(out)s.manifest.rc' % variables)
+        add_to_ld = ' %(out)s.manifest.res' % variables
+    subprocess.check_call(ldcmd + add_to_ld)
+
+    # Run mt.exe on the theoretically complete manifest we generated, merging
+    # it with the one the linker generated to confirm that the linker
+    # generated one does not add anything. This is strictly unnecessary for
+    # correctness, it's only to verify that e.g. /MANIFESTDEPENDENCY was not
+    # used in a #pragma comment.
+    if manifests:
+      # Merge the intermediate one with ours to .assert.manifest, then check
+      # that .assert.manifest is identical to ours.
+      subprocess.check_call(
+          '%(python)s gyp-win-tool manifest-wrapper %(arch)s %(mt)s -nologo '
+          '-manifest %(out)s.manifest %(intermediate_manifest)s '
+          '-out:%(out)s.assert.manifest' % variables)
+      assert_manifest = '%(out)s.assert.manifest' % variables
+      our_manifest = '%(out)s.manifest' % variables
+      # Load and normalize the manifests. mt.exe sometimes removes whitespace,
+      # and sometimes doesn't unfortunately.
+      with open(our_manifest, 'rb') as our_f:
+        with open(assert_manifest, 'rb') as assert_f:
+          our_data = our_f.read().translate(None, string.whitespace)
+          assert_data = assert_f.read().translate(None, string.whitespace)
+      if our_data != assert_data:
+        os.unlink(out)
+        def dump(filename):
+          sys.stderr.write('%s\n-----\n' % filename)
+          with open(filename, 'rb') as f:
+            sys.stderr.write(f.read() + '\n-----\n')
+        dump(intermediate_manifest)
+        dump(our_manifest)
+        dump(assert_manifest)
+        sys.stderr.write(
+            'Linker generated manifest "%s" added to final manifest "%s" '
+            '(result in "%s"). '
+            'Were /MANIFEST switches used in #pragma statements? ' % (
+              intermediate_manifest, our_manifest, assert_manifest))
+        return 1
+
+  def ExecManifestWrapper(self, arch, *args):
+    """Run manifest tool with environment set. Strip out undesirable warning
+    (some XML blocks are recognized by the OS loader, but not the manifest
+    tool)."""
+    env = self._GetEnv(arch)
+    popen = subprocess.Popen(args, shell=True, env=env,
+                             stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    out, _ = popen.communicate()
+    for line in out.splitlines():
+      if line and 'manifest authoring warning 81010002' not in line:
+        print line
+    return popen.returncode
+
+  def ExecManifestToRc(self, arch, *args):
+    """Creates a resource file pointing a SxS assembly manifest.
+    |args| is tuple containing path to resource file, path to manifest file
+    and resource name which can be "1" (for executables) or "2" (for DLLs)."""
+    manifest_path, resource_path, resource_name = args
+    with open(resource_path, 'wb') as output:
+      output.write('#include <windows.h>\n%s RT_MANIFEST "%s"' % (
+        resource_name,
+        os.path.abspath(manifest_path).replace('\\', '/')))
+
+  def ExecMidlWrapper(self, arch, outdir, tlb, h, dlldata, iid, proxy, idl,
+                      *flags):
+    """Filter noisy filenames output from MIDL compile step that isn't
+    quietable via command line flags.
+    """
+    args = ['midl', '/nologo'] + list(flags) + [
+        '/out', outdir,
+        '/tlb', tlb,
+        '/h', h,
+        '/dlldata', dlldata,
+        '/iid', iid,
+        '/proxy', proxy,
+        idl]
+    env = self._GetEnv(arch)
+    popen = subprocess.Popen(args, shell=True, env=env,
+                             stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    out, _ = popen.communicate()
+    # Filter junk out of stdout, and write filtered versions. Output we want
+    # to filter is pairs of lines that look like this:
+    # Processing C:\Program Files (x86)\Microsoft SDKs\...\include\objidl.idl
+    # objidl.idl
+    lines = out.splitlines()
+    prefix = 'Processing '
+    processing = set(os.path.basename(x) for x in lines if x.startswith(prefix))
+    for line in lines:
+      if not line.startswith(prefix) and line not in processing:
+        print line
+    return popen.returncode
+
+  def ExecAsmWrapper(self, arch, *args):
+    """Filter logo banner from invocations of asm.exe."""
+    env = self._GetEnv(arch)
+    # MSVS doesn't assemble x64 asm files.
+    if arch == 'environment.x64':
+      return 0
+    popen = subprocess.Popen(args, shell=True, env=env,
+                             stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    out, _ = popen.communicate()
+    for line in out.splitlines():
+      if (not line.startswith('Copyright (C) Microsoft Corporation') and
+          not line.startswith('Microsoft (R) Macro Assembler') and
+          not line.startswith(' Assembling: ') and
+          line):
+        print line
+    return popen.returncode
+
+  def ExecRcWrapper(self, arch, *args):
+    """Filter logo banner from invocations of rc.exe. Older versions of RC
+    don't support the /nologo flag."""
+    env = self._GetEnv(arch)
+    popen = subprocess.Popen(args, shell=True, env=env,
+                             stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+    out, _ = popen.communicate()
+    for line in out.splitlines():
+      if (not line.startswith('Microsoft (R) Windows (R) Resource Compiler') and
+          not line.startswith('Copyright (C) Microsoft Corporation') and
+          line):
+        print line
+    return popen.returncode
+
+  def ExecActionWrapper(self, arch, rspfile, *dir):
+    """Runs an action command line from a response file using the environment
+    for |arch|. If |dir| is supplied, use that as the working directory."""
+    env = self._GetEnv(arch)
+    # TODO(scottmg): This is a temporary hack to get some specific variables
+    # through to actions that are set after gyp-time. http://crbug.com/333738.
+    for k, v in os.environ.iteritems():
+      if k not in env:
+        env[k] = v
+    args = open(rspfile).read()
+    dir = dir[0] if dir else None
+    return subprocess.call(args, shell=True, env=env, cwd=dir)
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))
diff --git a/deps/gyp/pylib/gyp/xcode_emulation.py b/deps/gyp/pylib/gyp/xcode_emulation.py
new file mode 100644
index 0000000000..30f27d5832
--- /dev/null
+++ b/deps/gyp/pylib/gyp/xcode_emulation.py
@@ -0,0 +1,1440 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+This module contains classes that help to emulate xcodebuild behavior on top of
+other build systems, such as make and ninja.
+"""
+
+import copy
+import gyp.common
+import os
+import os.path
+import re
+import shlex
+import subprocess
+import sys
+import tempfile
+from gyp.common import GypError
+
+class XcodeSettings(object):
+  """A class that understands the gyp 'xcode_settings' object."""
+
+  # Populated lazily by _SdkPath(). Shared by all XcodeSettings, so cached
+  # at class-level for efficiency.
+  _sdk_path_cache = {}
+  _sdk_root_cache = {}
+
+  # Populated lazily by GetExtraPlistItems(). Shared by all XcodeSettings, so
+  # cached at class-level for efficiency.
+  _plist_cache = {}
+
+  # Populated lazily by GetIOSPostbuilds.  Shared by all XcodeSettings, so
+  # cached at class-level for efficiency.
+  _codesigning_key_cache = {}
+
+  # Populated lazily by _XcodeVersion.  Shared by all XcodeSettings, so cached
+  # at class-level for efficiency.
+  _xcode_version_cache = ()
+
+  def __init__(self, spec):
+    self.spec = spec
+
+    self.isIOS = False
+
+    # Per-target 'xcode_settings' are pushed down into configs earlier by gyp.
+    # This means self.xcode_settings[config] always contains all settings
+    # for that config -- the per-target settings as well. Settings that are
+    # the same for all configs are implicitly per-target settings.
+    self.xcode_settings = {}
+    configs = spec['configurations']
+    for configname, config in configs.iteritems():
+      self.xcode_settings[configname] = config.get('xcode_settings', {})
+      self._ConvertConditionalKeys(configname)
+      if self.xcode_settings[configname].get('IPHONEOS_DEPLOYMENT_TARGET',
+                                             None):
+        self.isIOS = True
+
+    # This is only non-None temporarily during the execution of some methods.
+    self.configname = None
+
+    # Used by _AdjustLibrary to match .a and .dylib entries in libraries.
+    self.library_re = re.compile(r'^lib([^/]+)\.(a|dylib)$')
+
+  def _ConvertConditionalKeys(self, configname):
+    """Converts or warns on conditional keys.  Xcode supports conditional keys,
+    such as CODE_SIGN_IDENTITY[sdk=iphoneos*].  This is a partial implementation
+    with some keys converted while the rest force a warning."""
+    settings = self.xcode_settings[configname]
+    conditional_keys = [key for key in settings if key.endswith(']')]
+    for key in conditional_keys:
+      # If you need more, speak up at http://crbug.com/122592
+      if key.endswith("[sdk=iphoneos*]"):
+        if configname.endswith("iphoneos"):
+          new_key = key.split("[")[0]
+          settings[new_key] = settings[key]
+      else:
+        print 'Warning: Conditional keys not implemented, ignoring:', \
+              ' '.join(conditional_keys)
+      del settings[key]
+
+  def _Settings(self):
+    assert self.configname
+    return self.xcode_settings[self.configname]
+
+  def _Test(self, test_key, cond_key, default):
+    return self._Settings().get(test_key, default) == cond_key
+
+  def _Appendf(self, lst, test_key, format_str, default=None):
+    if test_key in self._Settings():
+      lst.append(format_str % str(self._Settings()[test_key]))
+    elif default:
+      lst.append(format_str % str(default))
+
+  def _WarnUnimplemented(self, test_key):
+    if test_key in self._Settings():
+      print 'Warning: Ignoring not yet implemented key "%s".' % test_key
+
+  def _IsBundle(self):
+    return int(self.spec.get('mac_bundle', 0)) != 0
+
+  def GetFrameworkVersion(self):
+    """Returns the framework version of the current target. Only valid for
+    bundles."""
+    assert self._IsBundle()
+    return self.GetPerTargetSetting('FRAMEWORK_VERSION', default='A')
+
+  def GetWrapperExtension(self):
+    """Returns the bundle extension (.app, .framework, .plugin, etc).  Only
+    valid for bundles."""
+    assert self._IsBundle()
+    if self.spec['type'] in ('loadable_module', 'shared_library'):
+      default_wrapper_extension = {
+        'loadable_module': 'bundle',
+        'shared_library': 'framework',
+      }[self.spec['type']]
+      wrapper_extension = self.GetPerTargetSetting(
+          'WRAPPER_EXTENSION', default=default_wrapper_extension)
+      return '.' + self.spec.get('product_extension', wrapper_extension)
+    elif self.spec['type'] == 'executable':
+      return '.' + self.spec.get('product_extension', 'app')
+    else:
+      assert False, "Don't know extension for '%s', target '%s'" % (
+          self.spec['type'], self.spec['target_name'])
+
+  def GetProductName(self):
+    """Returns PRODUCT_NAME."""
+    return self.spec.get('product_name', self.spec['target_name'])
+
+  def GetFullProductName(self):
+    """Returns FULL_PRODUCT_NAME."""
+    if self._IsBundle():
+      return self.GetWrapperName()
+    else:
+      return self._GetStandaloneBinaryPath()
+
+  def GetWrapperName(self):
+    """Returns the directory name of the bundle represented by this target.
+    Only valid for bundles."""
+    assert self._IsBundle()
+    return self.GetProductName() + self.GetWrapperExtension()
+
+  def GetBundleContentsFolderPath(self):
+    """Returns the qualified path to the bundle's contents folder. E.g.
+    Chromium.app/Contents or Foo.bundle/Versions/A. Only valid for bundles."""
+    if self.isIOS:
+      return self.GetWrapperName()
+    assert self._IsBundle()
+    if self.spec['type'] == 'shared_library':
+      return os.path.join(
+          self.GetWrapperName(), 'Versions', self.GetFrameworkVersion())
+    else:
+      # loadable_modules have a 'Contents' folder like executables.
+      return os.path.join(self.GetWrapperName(), 'Contents')
+
+  def GetBundleResourceFolder(self):
+    """Returns the qualified path to the bundle's resource folder. E.g.
+    Chromium.app/Contents/Resources. Only valid for bundles."""
+    assert self._IsBundle()
+    if self.isIOS:
+      return self.GetBundleContentsFolderPath()
+    return os.path.join(self.GetBundleContentsFolderPath(), 'Resources')
+
+  def GetBundlePlistPath(self):
+    """Returns the qualified path to the bundle's plist file. E.g.
+    Chromium.app/Contents/Info.plist. Only valid for bundles."""
+    assert self._IsBundle()
+    if self.spec['type'] in ('executable', 'loadable_module'):
+      return os.path.join(self.GetBundleContentsFolderPath(), 'Info.plist')
+    else:
+      return os.path.join(self.GetBundleContentsFolderPath(),
+                          'Resources', 'Info.plist')
+
+  def GetProductType(self):
+    """Returns the PRODUCT_TYPE of this target."""
+    if self._IsBundle():
+      return {
+        'executable': 'com.apple.product-type.application',
+        'loadable_module': 'com.apple.product-type.bundle',
+        'shared_library': 'com.apple.product-type.framework',
+      }[self.spec['type']]
+    else:
+      return {
+        'executable': 'com.apple.product-type.tool',
+        'loadable_module': 'com.apple.product-type.library.dynamic',
+        'shared_library': 'com.apple.product-type.library.dynamic',
+        'static_library': 'com.apple.product-type.library.static',
+      }[self.spec['type']]
+
+  def GetMachOType(self):
+    """Returns the MACH_O_TYPE of this target."""
+    # Weird, but matches Xcode.
+    if not self._IsBundle() and self.spec['type'] == 'executable':
+      return ''
+    return {
+      'executable': 'mh_execute',
+      'static_library': 'staticlib',
+      'shared_library': 'mh_dylib',
+      'loadable_module': 'mh_bundle',
+    }[self.spec['type']]
+
+  def _GetBundleBinaryPath(self):
+    """Returns the name of the bundle binary of by this target.
+    E.g. Chromium.app/Contents/MacOS/Chromium. Only valid for bundles."""
+    assert self._IsBundle()
+    if self.spec['type'] in ('shared_library') or self.isIOS:
+      path = self.GetBundleContentsFolderPath()
+    elif self.spec['type'] in ('executable', 'loadable_module'):
+      path = os.path.join(self.GetBundleContentsFolderPath(), 'MacOS')
+    return os.path.join(path, self.GetExecutableName())
+
+  def _GetStandaloneExecutableSuffix(self):
+    if 'product_extension' in self.spec:
+      return '.' + self.spec['product_extension']
+    return {
+      'executable': '',
+      'static_library': '.a',
+      'shared_library': '.dylib',
+      'loadable_module': '.so',
+    }[self.spec['type']]
+
+  def _GetStandaloneExecutablePrefix(self):
+    return self.spec.get('product_prefix', {
+      'executable': '',
+      'static_library': 'lib',
+      'shared_library': 'lib',
+      # Non-bundled loadable_modules are called foo.so for some reason
+      # (that is, .so and no prefix) with the xcode build -- match that.
+      'loadable_module': '',
+    }[self.spec['type']])
+
+  def _GetStandaloneBinaryPath(self):
+    """Returns the name of the non-bundle binary represented by this target.
+    E.g. hello_world. Only valid for non-bundles."""
+    assert not self._IsBundle()
+    assert self.spec['type'] in (
+        'executable', 'shared_library', 'static_library', 'loadable_module'), (
+        'Unexpected type %s' % self.spec['type'])
+    target = self.spec['target_name']
+    if self.spec['type'] == 'static_library':
+      if target[:3] == 'lib':
+        target = target[3:]
+    elif self.spec['type'] in ('loadable_module', 'shared_library'):
+      if target[:3] == 'lib':
+        target = target[3:]
+
+    target_prefix = self._GetStandaloneExecutablePrefix()
+    target = self.spec.get('product_name', target)
+    target_ext = self._GetStandaloneExecutableSuffix()
+    return target_prefix + target + target_ext
+
+  def GetExecutableName(self):
+    """Returns the executable name of the bundle represented by this target.
+    E.g. Chromium."""
+    if self._IsBundle():
+      return self.spec.get('product_name', self.spec['target_name'])
+    else:
+      return self._GetStandaloneBinaryPath()
+
+  def GetExecutablePath(self):
+    """Returns the directory name of the bundle represented by this target. E.g.
+    Chromium.app/Contents/MacOS/Chromium."""
+    if self._IsBundle():
+      return self._GetBundleBinaryPath()
+    else:
+      return self._GetStandaloneBinaryPath()
+
+  def GetActiveArchs(self, configname):
+    """Returns the architectures this target should be built for."""
+    # TODO: Look at VALID_ARCHS, ONLY_ACTIVE_ARCH; possibly set
+    # CURRENT_ARCH / NATIVE_ARCH env vars?
+    return self.xcode_settings[configname].get('ARCHS', [self._DefaultArch()])
+
+  def _GetStdout(self, cmdlist):
+    job = subprocess.Popen(cmdlist, stdout=subprocess.PIPE)
+    out = job.communicate()[0]
+    if job.returncode != 0:
+      sys.stderr.write(out + '\n')
+      raise GypError('Error %d running %s' % (job.returncode, cmdlist[0]))
+    return out.rstrip('\n')
+
+  def _GetSdkVersionInfoItem(self, sdk, infoitem):
+    # xcodebuild requires Xcode and can't run on Command Line Tools-only
+    # systems from 10.7 onward.
+    # Since the CLT has no SDK paths anyway, returning None is the
+    # most sensible route and should still do the right thing.
+    try:
+      return self._GetStdout(['xcodebuild', '-version', '-sdk', sdk, infoitem])
+    except:
+      pass
+
+  def _SdkRoot(self, configname):
+    if configname is None:
+      configname = self.configname
+    return self.GetPerConfigSetting('SDKROOT', configname, default='')
+
+  def _SdkPath(self, configname=None):
+    sdk_root = self._SdkRoot(configname)
+    if sdk_root.startswith('/'):
+      return sdk_root
+    return self._XcodeSdkPath(sdk_root)
+
+  def _XcodeSdkPath(self, sdk_root):
+    if sdk_root not in XcodeSettings._sdk_path_cache:
+      sdk_path = self._GetSdkVersionInfoItem(sdk_root, 'Path')
+      XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
+      if sdk_root:
+        XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
+    return XcodeSettings._sdk_path_cache[sdk_root]
+
+  def _AppendPlatformVersionMinFlags(self, lst):
+    self._Appendf(lst, 'MACOSX_DEPLOYMENT_TARGET', '-mmacosx-version-min=%s')
+    if 'IPHONEOS_DEPLOYMENT_TARGET' in self._Settings():
+      # TODO: Implement this better?
+      sdk_path_basename = os.path.basename(self._SdkPath())
+      if sdk_path_basename.lower().startswith('iphonesimulator'):
+        self._Appendf(lst, 'IPHONEOS_DEPLOYMENT_TARGET',
+                      '-mios-simulator-version-min=%s')
+      else:
+        self._Appendf(lst, 'IPHONEOS_DEPLOYMENT_TARGET',
+                      '-miphoneos-version-min=%s')
+
+  def GetCflags(self, configname, arch=None):
+    """Returns flags that need to be added to .c, .cc, .m, and .mm
+    compilations."""
+    # This functions (and the similar ones below) do not offer complete
+    # emulation of all xcode_settings keys. They're implemented on demand.
+
+    self.configname = configname
+    cflags = []
+
+    sdk_root = self._SdkPath()
+    if 'SDKROOT' in self._Settings() and sdk_root:
+      cflags.append('-isysroot %s' % sdk_root)
+
+    if self._Test('CLANG_WARN_CONSTANT_CONVERSION', 'YES', default='NO'):
+      cflags.append('-Wconstant-conversion')
+
+    if self._Test('GCC_CHAR_IS_UNSIGNED_CHAR', 'YES', default='NO'):
+      cflags.append('-funsigned-char')
+
+    if self._Test('GCC_CW_ASM_SYNTAX', 'YES', default='YES'):
+      cflags.append('-fasm-blocks')
+
+    if 'GCC_DYNAMIC_NO_PIC' in self._Settings():
+      if self._Settings()['GCC_DYNAMIC_NO_PIC'] == 'YES':
+        cflags.append('-mdynamic-no-pic')
+    else:
+      pass
+      # TODO: In this case, it depends on the target. xcode passes
+      # mdynamic-no-pic by default for executable and possibly static lib
+      # according to mento
+
+    if self._Test('GCC_ENABLE_PASCAL_STRINGS', 'YES', default='YES'):
+      cflags.append('-mpascal-strings')
+
+    self._Appendf(cflags, 'GCC_OPTIMIZATION_LEVEL', '-O%s', default='s')
+
+    if self._Test('GCC_GENERATE_DEBUGGING_SYMBOLS', 'YES', default='YES'):
+      dbg_format = self._Settings().get('DEBUG_INFORMATION_FORMAT', 'dwarf')
+      if dbg_format == 'dwarf':
+        cflags.append('-gdwarf-2')
+      elif dbg_format == 'stabs':
+        raise NotImplementedError('stabs debug format is not supported yet.')
+      elif dbg_format == 'dwarf-with-dsym':
+        cflags.append('-gdwarf-2')
+      else:
+        raise NotImplementedError('Unknown debug format %s' % dbg_format)
+
+    if self._Settings().get('GCC_STRICT_ALIASING') == 'YES':
+      cflags.append('-fstrict-aliasing')
+    elif self._Settings().get('GCC_STRICT_ALIASING') == 'NO':
+      cflags.append('-fno-strict-aliasing')
+
+    if self._Test('GCC_SYMBOLS_PRIVATE_EXTERN', 'YES', default='NO'):
+      cflags.append('-fvisibility=hidden')
+
+    if self._Test('GCC_TREAT_WARNINGS_AS_ERRORS', 'YES', default='NO'):
+      cflags.append('-Werror')
+
+    if self._Test('GCC_WARN_ABOUT_MISSING_NEWLINE', 'YES', default='NO'):
+      cflags.append('-Wnewline-eof')
+
+    self._AppendPlatformVersionMinFlags(cflags)
+
+    # TODO:
+    if self._Test('COPY_PHASE_STRIP', 'YES', default='NO'):
+      self._WarnUnimplemented('COPY_PHASE_STRIP')
+    self._WarnUnimplemented('GCC_DEBUGGING_SYMBOLS')
+    self._WarnUnimplemented('GCC_ENABLE_OBJC_EXCEPTIONS')
+
+    # TODO: This is exported correctly, but assigning to it is not supported.
+    self._WarnUnimplemented('MACH_O_TYPE')
+    self._WarnUnimplemented('PRODUCT_TYPE')
+
+    if arch is not None:
+      archs = [arch]
+    else:
+      archs = self._Settings().get('ARCHS', [self._DefaultArch()])
+    if len(archs) != 1:
+      # TODO: Supporting fat binaries will be annoying.
+      self._WarnUnimplemented('ARCHS')
+      archs = ['i386']
+    cflags.append('-arch ' + archs[0])
+
+    if archs[0] in ('i386', 'x86_64'):
+      if self._Test('GCC_ENABLE_SSE3_EXTENSIONS', 'YES', default='NO'):
+        cflags.append('-msse3')
+      if self._Test('GCC_ENABLE_SUPPLEMENTAL_SSE3_INSTRUCTIONS', 'YES',
+                    default='NO'):
+        cflags.append('-mssse3')  # Note 3rd 's'.
+      if self._Test('GCC_ENABLE_SSE41_EXTENSIONS', 'YES', default='NO'):
+        cflags.append('-msse4.1')
+      if self._Test('GCC_ENABLE_SSE42_EXTENSIONS', 'YES', default='NO'):
+        cflags.append('-msse4.2')
+
+    cflags += self._Settings().get('WARNING_CFLAGS', [])
+
+    if sdk_root:
+      framework_root = sdk_root
+    else:
+      framework_root = ''
+    config = self.spec['configurations'][self.configname]
+    framework_dirs = config.get('mac_framework_dirs', [])
+    for directory in framework_dirs:
+      cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
+
+    self.configname = None
+    return cflags
+
+  def GetCflagsC(self, configname):
+    """Returns flags that need to be added to .c, and .m compilations."""
+    self.configname = configname
+    cflags_c = []
+    if self._Settings().get('GCC_C_LANGUAGE_STANDARD', '') == 'ansi':
+      cflags_c.append('-ansi')
+    else:
+      self._Appendf(cflags_c, 'GCC_C_LANGUAGE_STANDARD', '-std=%s')
+    cflags_c += self._Settings().get('OTHER_CFLAGS', [])
+    self.configname = None
+    return cflags_c
+
+  def GetCflagsCC(self, configname):
+    """Returns flags that need to be added to .cc, and .mm compilations."""
+    self.configname = configname
+    cflags_cc = []
+
+    clang_cxx_language_standard = self._Settings().get(
+        'CLANG_CXX_LANGUAGE_STANDARD')
+    # Note: Don't make c++0x to c++11 so that c++0x can be used with older
+    # clangs that don't understand c++11 yet (like Xcode 4.2's).
+    if clang_cxx_language_standard:
+      cflags_cc.append('-std=%s' % clang_cxx_language_standard)
+
+    self._Appendf(cflags_cc, 'CLANG_CXX_LIBRARY', '-stdlib=%s')
+
+    if self._Test('GCC_ENABLE_CPP_RTTI', 'NO', default='YES'):
+      cflags_cc.append('-fno-rtti')
+    if self._Test('GCC_ENABLE_CPP_EXCEPTIONS', 'NO', default='YES'):
+      cflags_cc.append('-fno-exceptions')
+    if self._Test('GCC_INLINES_ARE_PRIVATE_EXTERN', 'YES', default='NO'):
+      cflags_cc.append('-fvisibility-inlines-hidden')
+    if self._Test('GCC_THREADSAFE_STATICS', 'NO', default='YES'):
+      cflags_cc.append('-fno-threadsafe-statics')
+    # Note: This flag is a no-op for clang, it only has an effect for gcc.
+    if self._Test('GCC_WARN_ABOUT_INVALID_OFFSETOF_MACRO', 'NO', default='YES'):
+      cflags_cc.append('-Wno-invalid-offsetof')
+
+    other_ccflags = []
+
+    for flag in self._Settings().get('OTHER_CPLUSPLUSFLAGS', ['$(inherited)']):
+      # TODO: More general variable expansion. Missing in many other places too.
+      if flag in ('$inherited', '$(inherited)', '${inherited}'):
+        flag = '$OTHER_CFLAGS'
+      if flag in ('$OTHER_CFLAGS', '$(OTHER_CFLAGS)', '${OTHER_CFLAGS}'):
+        other_ccflags += self._Settings().get('OTHER_CFLAGS', [])
+      else:
+        other_ccflags.append(flag)
+    cflags_cc += other_ccflags
+
+    self.configname = None
+    return cflags_cc
+
+  def _AddObjectiveCGarbageCollectionFlags(self, flags):
+    gc_policy = self._Settings().get('GCC_ENABLE_OBJC_GC', 'unsupported')
+    if gc_policy == 'supported':
+      flags.append('-fobjc-gc')
+    elif gc_policy == 'required':
+      flags.append('-fobjc-gc-only')
+
+  def _AddObjectiveCARCFlags(self, flags):
+    if self._Test('CLANG_ENABLE_OBJC_ARC', 'YES', default='NO'):
+      flags.append('-fobjc-arc')
+
+  def _AddObjectiveCMissingPropertySynthesisFlags(self, flags):
+    if self._Test('CLANG_WARN_OBJC_MISSING_PROPERTY_SYNTHESIS',
+                  'YES', default='NO'):
+      flags.append('-Wobjc-missing-property-synthesis')
+
+  def GetCflagsObjC(self, configname):
+    """Returns flags that need to be added to .m compilations."""
+    self.configname = configname
+    cflags_objc = []
+    self._AddObjectiveCGarbageCollectionFlags(cflags_objc)
+    self._AddObjectiveCARCFlags(cflags_objc)
+    self._AddObjectiveCMissingPropertySynthesisFlags(cflags_objc)
+    self.configname = None
+    return cflags_objc
+
+  def GetCflagsObjCC(self, configname):
+    """Returns flags that need to be added to .mm compilations."""
+    self.configname = configname
+    cflags_objcc = []
+    self._AddObjectiveCGarbageCollectionFlags(cflags_objcc)
+    self._AddObjectiveCARCFlags(cflags_objcc)
+    self._AddObjectiveCMissingPropertySynthesisFlags(cflags_objcc)
+    if self._Test('GCC_OBJC_CALL_CXX_CDTORS', 'YES', default='NO'):
+      cflags_objcc.append('-fobjc-call-cxx-cdtors')
+    self.configname = None
+    return cflags_objcc
+
+  def GetInstallNameBase(self):
+    """Return DYLIB_INSTALL_NAME_BASE for this target."""
+    # Xcode sets this for shared_libraries, and for nonbundled loadable_modules.
+    if (self.spec['type'] != 'shared_library' and
+        (self.spec['type'] != 'loadable_module' or self._IsBundle())):
+      return None
+    install_base = self.GetPerTargetSetting(
+        'DYLIB_INSTALL_NAME_BASE',
+        default='/Library/Frameworks' if self._IsBundle() else '/usr/local/lib')
+    return install_base
+
+  def _StandardizePath(self, path):
+    """Do :standardizepath processing for path."""
+    # I'm not quite sure what :standardizepath does. Just call normpath(),
+    # but don't let @executable_path/../foo collapse to foo.
+    if '/' in path:
+      prefix, rest = '', path
+      if path.startswith('@'):
+        prefix, rest = path.split('/', 1)
+      rest = os.path.normpath(rest)  # :standardizepath
+      path = os.path.join(prefix, rest)
+    return path
+
+  def GetInstallName(self):
+    """Return LD_DYLIB_INSTALL_NAME for this target."""
+    # Xcode sets this for shared_libraries, and for nonbundled loadable_modules.
+    if (self.spec['type'] != 'shared_library' and
+        (self.spec['type'] != 'loadable_module' or self._IsBundle())):
+      return None
+
+    default_install_name = \
+        '$(DYLIB_INSTALL_NAME_BASE:standardizepath)/$(EXECUTABLE_PATH)'
+    install_name = self.GetPerTargetSetting(
+        'LD_DYLIB_INSTALL_NAME', default=default_install_name)
+
+    # Hardcode support for the variables used in chromium for now, to
+    # unblock people using the make build.
+    if '$' in install_name:
+      assert install_name in ('$(DYLIB_INSTALL_NAME_BASE:standardizepath)/'
+          '$(WRAPPER_NAME)/$(PRODUCT_NAME)', default_install_name), (
+          'Variables in LD_DYLIB_INSTALL_NAME are not generally supported '
+          'yet in target \'%s\' (got \'%s\')' %
+              (self.spec['target_name'], install_name))
+
+      install_name = install_name.replace(
+          '$(DYLIB_INSTALL_NAME_BASE:standardizepath)',
+          self._StandardizePath(self.GetInstallNameBase()))
+      if self._IsBundle():
+        # These are only valid for bundles, hence the |if|.
+        install_name = install_name.replace(
+            '$(WRAPPER_NAME)', self.GetWrapperName())
+        install_name = install_name.replace(
+            '$(PRODUCT_NAME)', self.GetProductName())
+      else:
+        assert '$(WRAPPER_NAME)' not in install_name
+        assert '$(PRODUCT_NAME)' not in install_name
+
+      install_name = install_name.replace(
+          '$(EXECUTABLE_PATH)', self.GetExecutablePath())
+    return install_name
+
+  def _MapLinkerFlagFilename(self, ldflag, gyp_to_build_path):
+    """Checks if ldflag contains a filename and if so remaps it from
+    gyp-directory-relative to build-directory-relative."""
+    # This list is expanded on demand.
+    # They get matched as:
+    #   -exported_symbols_list file
+    #   -Wl,exported_symbols_list file
+    #   -Wl,exported_symbols_list,file
+    LINKER_FILE = '(\S+)'
+    WORD = '\S+'
+    linker_flags = [
+      ['-exported_symbols_list', LINKER_FILE],    # Needed for NaCl.
+      ['-unexported_symbols_list', LINKER_FILE],
+      ['-reexported_symbols_list', LINKER_FILE],
+      ['-sectcreate', WORD, WORD, LINKER_FILE],   # Needed for remoting.
+    ]
+    for flag_pattern in linker_flags:
+      regex = re.compile('(?:-Wl,)?' + '[ ,]'.join(flag_pattern))
+      m = regex.match(ldflag)
+      if m:
+        ldflag = ldflag[:m.start(1)] + gyp_to_build_path(m.group(1)) + \
+                 ldflag[m.end(1):]
+    # Required for ffmpeg (no idea why they don't use LIBRARY_SEARCH_PATHS,
+    # TODO(thakis): Update ffmpeg.gyp):
+    if ldflag.startswith('-L'):
+      ldflag = '-L' + gyp_to_build_path(ldflag[len('-L'):])
+    return ldflag
+
+  def GetLdflags(self, configname, product_dir, gyp_to_build_path, arch=None):
+    """Returns flags that need to be passed to the linker.
+
+    Args:
+        configname: The name of the configuration to get ld flags for.
+        product_dir: The directory where products such static and dynamic
+            libraries are placed. This is added to the library search path.
+        gyp_to_build_path: A function that converts paths relative to the
+            current gyp file to paths relative to the build direcotry.
+    """
+    self.configname = configname
+    ldflags = []
+
+    # The xcode build is relative to a gyp file's directory, and OTHER_LDFLAGS
+    # can contain entries that depend on this. Explicitly absolutify these.
+    for ldflag in self._Settings().get('OTHER_LDFLAGS', []):
+      ldflags.append(self._MapLinkerFlagFilename(ldflag, gyp_to_build_path))
+
+    if self._Test('DEAD_CODE_STRIPPING', 'YES', default='NO'):
+      ldflags.append('-Wl,-dead_strip')
+
+    if self._Test('PREBINDING', 'YES', default='NO'):
+      ldflags.append('-Wl,-prebind')
+
+    self._Appendf(
+        ldflags, 'DYLIB_COMPATIBILITY_VERSION', '-compatibility_version %s')
+    self._Appendf(
+        ldflags, 'DYLIB_CURRENT_VERSION', '-current_version %s')
+
+    self._AppendPlatformVersionMinFlags(ldflags)
+
+    if 'SDKROOT' in self._Settings() and self._SdkPath():
+      ldflags.append('-isysroot ' + self._SdkPath())
+
+    for library_path in self._Settings().get('LIBRARY_SEARCH_PATHS', []):
+      ldflags.append('-L' + gyp_to_build_path(library_path))
+
+    if 'ORDER_FILE' in self._Settings():
+      ldflags.append('-Wl,-order_file ' +
+                     '-Wl,' + gyp_to_build_path(
+                                  self._Settings()['ORDER_FILE']))
+
+    if arch is not None:
+      archs = [arch]
+    else:
+      archs = self._Settings().get('ARCHS', [self._DefaultArch()])
+    if len(archs) != 1:
+      # TODO: Supporting fat binaries will be annoying.
+      self._WarnUnimplemented('ARCHS')
+      archs = ['i386']
+    ldflags.append('-arch ' + archs[0])
+
+    # Xcode adds the product directory by default.
+    ldflags.append('-L' + product_dir)
+
+    install_name = self.GetInstallName()
+    if install_name and self.spec['type'] != 'loadable_module':
+      ldflags.append('-install_name ' + install_name.replace(' ', r'\ '))
+
+    for rpath in self._Settings().get('LD_RUNPATH_SEARCH_PATHS', []):
+      ldflags.append('-Wl,-rpath,' + rpath)
+
+    sdk_root = self._SdkPath()
+    if not sdk_root:
+      sdk_root = ''
+    config = self.spec['configurations'][self.configname]
+    framework_dirs = config.get('mac_framework_dirs', [])
+    for directory in framework_dirs:
+      ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
+
+    self.configname = None
+    return ldflags
+
+  def GetLibtoolflags(self, configname):
+    """Returns flags that need to be passed to the static linker.
+
+    Args:
+        configname: The name of the configuration to get ld flags for.
+    """
+    self.configname = configname
+    libtoolflags = []
+
+    for libtoolflag in self._Settings().get('OTHER_LDFLAGS', []):
+      libtoolflags.append(libtoolflag)
+    # TODO(thakis): ARCHS?
+
+    self.configname = None
+    return libtoolflags
+
+  def GetPerTargetSettings(self):
+    """Gets a list of all the per-target settings. This will only fetch keys
+    whose values are the same across all configurations."""
+    first_pass = True
+    result = {}
+    for configname in sorted(self.xcode_settings.keys()):
+      if first_pass:
+        result = dict(self.xcode_settings[configname])
+        first_pass = False
+      else:
+        for key, value in self.xcode_settings[configname].iteritems():
+          if key not in result:
+            continue
+          elif result[key] != value:
+            del result[key]
+    return result
+
+  def GetPerConfigSetting(self, setting, configname, default=None):
+    if configname in self.xcode_settings:
+      return self.xcode_settings[configname].get(setting, default)
+    else:
+      return self.GetPerTargetSetting(setting, default)
+
+  def GetPerTargetSetting(self, setting, default=None):
+    """Tries to get xcode_settings.setting from spec. Assumes that the setting
+       has the same value in all configurations and throws otherwise."""
+    is_first_pass = True
+    result = None
+    for configname in sorted(self.xcode_settings.keys()):
+      if is_first_pass:
+        result = self.xcode_settings[configname].get(setting, None)
+        is_first_pass = False
+      else:
+        assert result == self.xcode_settings[configname].get(setting, None), (
+            "Expected per-target setting for '%s', got per-config setting "
+            "(target %s)" % (setting, self.spec['target_name']))
+    if result is None:
+      return default
+    return result
+
+  def _GetStripPostbuilds(self, configname, output_binary, quiet):
+    """Returns a list of shell commands that contain the shell commands
+    neccessary to strip this target's binary. These should be run as postbuilds
+    before the actual postbuilds run."""
+    self.configname = configname
+
+    result = []
+    if (self._Test('DEPLOYMENT_POSTPROCESSING', 'YES', default='NO') and
+        self._Test('STRIP_INSTALLED_PRODUCT', 'YES', default='NO')):
+
+      default_strip_style = 'debugging'
+      if self.spec['type'] == 'loadable_module' and self._IsBundle():
+        default_strip_style = 'non-global'
+      elif self.spec['type'] == 'executable':
+        default_strip_style = 'all'
+
+      strip_style = self._Settings().get('STRIP_STYLE', default_strip_style)
+      strip_flags = {
+        'all': '',
+        'non-global': '-x',
+        'debugging': '-S',
+      }[strip_style]
+
+      explicit_strip_flags = self._Settings().get('STRIPFLAGS', '')
+      if explicit_strip_flags:
+        strip_flags += ' ' + _NormalizeEnvVarReferences(explicit_strip_flags)
+
+      if not quiet:
+        result.append('echo STRIP\\(%s\\)' % self.spec['target_name'])
+      result.append('strip %s %s' % (strip_flags, output_binary))
+
+    self.configname = None
+    return result
+
+  def _GetDebugInfoPostbuilds(self, configname, output, output_binary, quiet):
+    """Returns a list of shell commands that contain the shell commands
+    neccessary to massage this target's debug information. These should be run
+    as postbuilds before the actual postbuilds run."""
+    self.configname = configname
+
+    # For static libraries, no dSYMs are created.
+    result = []
+    if (self._Test('GCC_GENERATE_DEBUGGING_SYMBOLS', 'YES', default='YES') and
+        self._Test(
+            'DEBUG_INFORMATION_FORMAT', 'dwarf-with-dsym', default='dwarf') and
+        self.spec['type'] != 'static_library'):
+      if not quiet:
+        result.append('echo DSYMUTIL\\(%s\\)' % self.spec['target_name'])
+      result.append('dsymutil %s -o %s' % (output_binary, output + '.dSYM'))
+
+    self.configname = None
+    return result
+
+  def _GetTargetPostbuilds(self, configname, output, output_binary,
+                           quiet=False):
+    """Returns a list of shell commands that contain the shell commands
+    to run as postbuilds for this target, before the actual postbuilds."""
+    # dSYMs need to build before stripping happens.
+    return (
+        self._GetDebugInfoPostbuilds(configname, output, output_binary, quiet) +
+        self._GetStripPostbuilds(configname, output_binary, quiet))
+
+  def _GetIOSPostbuilds(self, configname, output_binary):
+    """Return a shell command to codesign the iOS output binary so it can
+    be deployed to a device.  This should be run as the very last step of the
+    build."""
+    if not (self.isIOS and self.spec['type'] == "executable"):
+      return []
+
+    settings = self.xcode_settings[configname]
+    key = self._GetIOSCodeSignIdentityKey(settings)
+    if not key:
+      return []
+
+    # Warn for any unimplemented signing xcode keys.
+    unimpl = ['OTHER_CODE_SIGN_FLAGS']
+    unimpl = set(unimpl) & set(self.xcode_settings[configname].keys())
+    if unimpl:
+      print 'Warning: Some codesign keys not implemented, ignoring: %s' % (
+          ', '.join(sorted(unimpl)))
+
+    return ['%s code-sign-bundle "%s" "%s" "%s" "%s"' % (
+        os.path.join('${TARGET_BUILD_DIR}', 'gyp-mac-tool'), key,
+        settings.get('CODE_SIGN_RESOURCE_RULES_PATH', ''),
+        settings.get('CODE_SIGN_ENTITLEMENTS', ''),
+        settings.get('PROVISIONING_PROFILE', ''))
+    ]
+
+  def _GetIOSCodeSignIdentityKey(self, settings):
+    identity = settings.get('CODE_SIGN_IDENTITY')
+    if not identity:
+      return None
+    if identity not in XcodeSettings._codesigning_key_cache:
+      output = subprocess.check_output(
+          ['security', 'find-identity', '-p', 'codesigning', '-v'])
+      for line in output.splitlines():
+        if identity in line:
+          fingerprint = line.split()[1]
+          cache = XcodeSettings._codesigning_key_cache
+          assert identity not in cache or fingerprint == cache[identity], (
+              "Multiple codesigning fingerprints for identity: %s" % identity)
+          XcodeSettings._codesigning_key_cache[identity] = fingerprint
+    return XcodeSettings._codesigning_key_cache.get(identity, '')
+
+  def AddImplicitPostbuilds(self, configname, output, output_binary,
+                            postbuilds=[], quiet=False):
+    """Returns a list of shell commands that should run before and after
+    |postbuilds|."""
+    assert output_binary is not None
+    pre = self._GetTargetPostbuilds(configname, output, output_binary, quiet)
+    post = self._GetIOSPostbuilds(configname, output_binary)
+    return pre + postbuilds + post
+
+  def _AdjustLibrary(self, library, config_name=None):
+    if library.endswith('.framework'):
+      l = '-framework ' + os.path.splitext(os.path.basename(library))[0]
+    else:
+      m = self.library_re.match(library)
+      if m:
+        l = '-l' + m.group(1)
+      else:
+        l = library
+
+    sdk_root = self._SdkPath(config_name)
+    if not sdk_root:
+      sdk_root = ''
+    return l.replace('$(SDKROOT)', sdk_root)
+
+  def AdjustLibraries(self, libraries, config_name=None):
+    """Transforms entries like 'Cocoa.framework' in libraries into entries like
+    '-framework Cocoa', 'libcrypto.dylib' into '-lcrypto', etc.
+    """
+    libraries = [self._AdjustLibrary(library, config_name)
+                 for library in libraries]
+    return libraries
+
+  def _BuildMachineOSBuild(self):
+    return self._GetStdout(['sw_vers', '-buildVersion'])
+
+  # This method ported from the logic in Homebrew's CLT version check
+  def _CLTVersion(self):
+    # pkgutil output looks like
+    #   package-id: com.apple.pkg.CLTools_Executables
+    #   version: 5.0.1.0.1.1382131676
+    #   volume: /
+    #   location: /
+    #   install-time: 1382544035
+    #   groups: com.apple.FindSystemFiles.pkg-group com.apple.DevToolsBoth.pkg-group com.apple.DevToolsNonRelocatableShared.pkg-group
+    STANDALONE_PKG_ID = "com.apple.pkg.DeveloperToolsCLILeo"
+    FROM_XCODE_PKG_ID = "com.apple.pkg.DeveloperToolsCLI"
+    MAVERICKS_PKG_ID = "com.apple.pkg.CLTools_Executables"
+
+    regex = re.compile('version: (?P<version>.+)')
+    for key in [MAVERICKS_PKG_ID, STANDALONE_PKG_ID, FROM_XCODE_PKG_ID]:
+      try:
+        output = self._GetStdout(['/usr/sbin/pkgutil', '--pkg-info', key])
+        return re.search(regex, output).groupdict()['version']
+      except:
+        continue
+
+  def _XcodeVersion(self):
+    # `xcodebuild -version` output looks like
+    #    Xcode 4.6.3
+    #    Build version 4H1503
+    # or like
+    #    Xcode 3.2.6
+    #    Component versions: DevToolsCore-1809.0; DevToolsSupport-1806.0
+    #    BuildVersion: 10M2518
+    # Convert that to '0463', '4H1503'.
+    if len(XcodeSettings._xcode_version_cache) == 0:
+      try:
+        version_list = self._GetStdout(['xcodebuild', '-version']).splitlines()
+        # In some circumstances xcodebuild exits 0 but doesn't return
+        # the right results; for example, a user on 10.7 or 10.8 with
+        # a bogus path set via xcode-select
+        # In that case this may be a CLT-only install so fall back to
+        # checking that version.
+        if len(version_list) < 2:
+          raise GypError, "xcodebuild returned unexpected results"
+      except:
+        version = self._CLTVersion()
+        if version:
+          version = re.match('(\d\.\d\.?\d*)', version).groups()[0]
+        else:
+          raise GypError, "No Xcode or CLT version detected!"
+        # The CLT has no build information, so we return an empty string.
+        version_list = [version, '']
+      version = version_list[0]
+      build = version_list[-1]
+      # Be careful to convert "4.2" to "0420":
+      version = version.split()[-1].replace('.', '')
+      version = (version + '0' * (3 - len(version))).zfill(4)
+      if build:
+        build = build.split()[-1]
+      XcodeSettings._xcode_version_cache = (version, build)
+    return XcodeSettings._xcode_version_cache
+
+  def _XcodeIOSDeviceFamily(self, configname):
+    family = self.xcode_settings[configname].get('TARGETED_DEVICE_FAMILY', '1')
+    return [int(x) for x in family.split(',')]
+
+  def GetExtraPlistItems(self, configname=None):
+    """Returns a dictionary with extra items to insert into Info.plist."""
+    if configname not in XcodeSettings._plist_cache:
+      cache = {}
+      cache['BuildMachineOSBuild'] = self._BuildMachineOSBuild()
+
+      xcode, xcode_build = self._XcodeVersion()
+      cache['DTXcode'] = xcode
+      cache['DTXcodeBuild'] = xcode_build
+
+      sdk_root = self._SdkRoot(configname)
+      if not sdk_root:
+        sdk_root = self._DefaultSdkRoot()
+      cache['DTSDKName'] = sdk_root
+      if xcode >= '0430':
+        cache['DTSDKBuild'] = self._GetSdkVersionInfoItem(
+            sdk_root, 'ProductBuildVersion')
+      else:
+        cache['DTSDKBuild'] = cache['BuildMachineOSBuild']
+
+      if self.isIOS:
+        cache['DTPlatformName'] = cache['DTSDKName']
+        if configname.endswith("iphoneos"):
+          cache['DTPlatformVersion'] = self._GetSdkVersionInfoItem(
+              sdk_root, 'ProductVersion')
+          cache['CFBundleSupportedPlatforms'] = ['iPhoneOS']
+        else:
+          cache['CFBundleSupportedPlatforms'] = ['iPhoneSimulator']
+      XcodeSettings._plist_cache[configname] = cache
+
+    # Include extra plist items that are per-target, not per global
+    # XcodeSettings.
+    items = dict(XcodeSettings._plist_cache[configname])
+    if self.isIOS:
+      items['UIDeviceFamily'] = self._XcodeIOSDeviceFamily(configname)
+    return items
+
+  def _DefaultSdkRoot(self):
+    """Returns the default SDKROOT to use.
+
+    Prior to version 5.0.0, if SDKROOT was not explicitly set in the Xcode
+    project, then the environment variable was empty. Starting with this
+    version, Xcode uses the name of the newest SDK installed.
+    """
+    if self._XcodeVersion() < '0500':
+      return ''
+    default_sdk_path = self._XcodeSdkPath('')
+    default_sdk_root = XcodeSettings._sdk_root_cache.get(default_sdk_path)
+    if default_sdk_root:
+      return default_sdk_root
+    try:
+      all_sdks = self._GetStdout(['xcodebuild', '-showsdks'])
+    except:
+      # If xcodebuild fails, there will be no valid SDKs
+      return ''
+    for line in all_sdks.splitlines():
+      items = line.split()
+      if len(items) >= 3 and items[-2] == '-sdk':
+        sdk_root = items[-1]
+        sdk_path = self._XcodeSdkPath(sdk_root)
+        if sdk_path == default_sdk_path:
+          return sdk_root
+    return ''
+
+  def _DefaultArch(self):
+    # For Mac projects, Xcode changed the default value used when ARCHS is not
+    # set from "i386" to "x86_64".
+    #
+    # For iOS projects, if ARCHS is unset, it defaults to "armv7 armv7s" when
+    # building for a device, and the simulator binaries are always build for
+    # "i386".
+    #
+    # For new projects, ARCHS is set to $(ARCHS_STANDARD_INCLUDING_64_BIT),
+    # which correspond to "armv7 armv7s arm64", and when building the simulator
+    # the architecture is either "i386" or "x86_64" depending on the simulated
+    # device (respectively 32-bit or 64-bit device).
+    #
+    # Since the value returned by this function is only used when ARCHS is not
+    # set, then on iOS we return "i386", as the default xcode project generator
+    # does not set ARCHS if it is not set in the .gyp file.
+    if self.isIOS:
+      return 'i386'
+    version, build = self._XcodeVersion()
+    if version >= '0500':
+      return 'x86_64'
+    return 'i386'
+
+class MacPrefixHeader(object):
+  """A class that helps with emulating Xcode's GCC_PREFIX_HEADER feature.
+
+  This feature consists of several pieces:
+  * If GCC_PREFIX_HEADER is present, all compilations in that project get an
+    additional |-include path_to_prefix_header| cflag.
+  * If GCC_PRECOMPILE_PREFIX_HEADER is present too, then the prefix header is
+    instead compiled, and all other compilations in the project get an
+    additional |-include path_to_compiled_header| instead.
+    + Compiled prefix headers have the extension gch. There is one gch file for
+      every language used in the project (c, cc, m, mm), since gch files for
+      different languages aren't compatible.
+    + gch files themselves are built with the target's normal cflags, but they
+      obviously don't get the |-include| flag. Instead, they need a -x flag that
+      describes their language.
+    + All o files in the target need to depend on the gch file, to make sure
+      it's built before any o file is built.
+
+  This class helps with some of these tasks, but it needs help from the build
+  system for writing dependencies to the gch files, for writing build commands
+  for the gch files, and for figuring out the location of the gch files.
+  """
+  def __init__(self, xcode_settings,
+               gyp_path_to_build_path, gyp_path_to_build_output):
+    """If xcode_settings is None, all methods on this class are no-ops.
+
+    Args:
+        gyp_path_to_build_path: A function that takes a gyp-relative path,
+            and returns a path relative to the build directory.
+        gyp_path_to_build_output: A function that takes a gyp-relative path and
+            a language code ('c', 'cc', 'm', or 'mm'), and that returns a path
+            to where the output of precompiling that path for that language
+            should be placed (without the trailing '.gch').
+    """
+    # This doesn't support per-configuration prefix headers. Good enough
+    # for now.
+    self.header = None
+    self.compile_headers = False
+    if xcode_settings:
+      self.header = xcode_settings.GetPerTargetSetting('GCC_PREFIX_HEADER')
+      self.compile_headers = xcode_settings.GetPerTargetSetting(
+          'GCC_PRECOMPILE_PREFIX_HEADER', default='NO') != 'NO'
+    self.compiled_headers = {}
+    if self.header:
+      if self.compile_headers:
+        for lang in ['c', 'cc', 'm', 'mm']:
+          self.compiled_headers[lang] = gyp_path_to_build_output(
+              self.header, lang)
+      self.header = gyp_path_to_build_path(self.header)
+
+  def _CompiledHeader(self, lang, arch):
+    assert self.compile_headers
+    h = self.compiled_headers[lang]
+    if arch:
+      h += '.' + arch
+    return h
+
+  def GetInclude(self, lang, arch=None):
+    """Gets the cflags to include the prefix header for language |lang|."""
+    if self.compile_headers and lang in self.compiled_headers:
+      return '-include %s' % self._CompiledHeader(lang, arch)
+    elif self.header:
+      return '-include %s' % self.header
+    else:
+      return ''
+
+  def _Gch(self, lang, arch):
+    """Returns the actual file name of the prefix header for language |lang|."""
+    assert self.compile_headers
+    return self._CompiledHeader(lang, arch) + '.gch'
+
+  def GetObjDependencies(self, sources, objs, arch=None):
+    """Given a list of source files and the corresponding object files, returns
+    a list of (source, object, gch) tuples, where |gch| is the build-directory
+    relative path to the gch file each object file depends on.  |compilable[i]|
+    has to be the source file belonging to |objs[i]|."""
+    if not self.header or not self.compile_headers:
+      return []
+
+    result = []
+    for source, obj in zip(sources, objs):
+      ext = os.path.splitext(source)[1]
+      lang = {
+        '.c': 'c',
+        '.cpp': 'cc', '.cc': 'cc', '.cxx': 'cc',
+        '.m': 'm',
+        '.mm': 'mm',
+      }.get(ext, None)
+      if lang:
+        result.append((source, obj, self._Gch(lang, arch)))
+    return result
+
+  def GetPchBuildCommands(self, arch=None):
+    """Returns [(path_to_gch, language_flag, language, header)].
+    |path_to_gch| and |header| are relative to the build directory.
+    """
+    if not self.header or not self.compile_headers:
+      return []
+    return [
+      (self._Gch('c', arch), '-x c-header', 'c', self.header),
+      (self._Gch('cc', arch), '-x c++-header', 'cc', self.header),
+      (self._Gch('m', arch), '-x objective-c-header', 'm', self.header),
+      (self._Gch('mm', arch), '-x objective-c++-header', 'mm', self.header),
+    ]
+
+
+def MergeGlobalXcodeSettingsToSpec(global_dict, spec):
+  """Merges the global xcode_settings dictionary into each configuration of the
+  target represented by spec. For keys that are both in the global and the local
+  xcode_settings dict, the local key gets precendence.
+  """
+  # The xcode generator special-cases global xcode_settings and does something
+  # that amounts to merging in the global xcode_settings into each local
+  # xcode_settings dict.
+  global_xcode_settings = global_dict.get('xcode_settings', {})
+  for config in spec['configurations'].values():
+    if 'xcode_settings' in config:
+      new_settings = global_xcode_settings.copy()
+      new_settings.update(config['xcode_settings'])
+      config['xcode_settings'] = new_settings
+
+
+def IsMacBundle(flavor, spec):
+  """Returns if |spec| should be treated as a bundle.
+
+  Bundles are directories with a certain subdirectory structure, instead of
+  just a single file. Bundle rules do not produce a binary but also package
+  resources into that directory."""
+  is_mac_bundle = (int(spec.get('mac_bundle', 0)) != 0 and flavor == 'mac')
+  if is_mac_bundle:
+    assert spec['type'] != 'none', (
+        'mac_bundle targets cannot have type none (target "%s")' %
+        spec['target_name'])
+  return is_mac_bundle
+
+
+def GetMacBundleResources(product_dir, xcode_settings, resources):
+  """Yields (output, resource) pairs for every resource in |resources|.
+  Only call this for mac bundle targets.
+
+  Args:
+      product_dir: Path to the directory containing the output bundle,
+          relative to the build directory.
+      xcode_settings: The XcodeSettings of the current target.
+      resources: A list of bundle resources, relative to the build directory.
+  """
+  dest = os.path.join(product_dir,
+                      xcode_settings.GetBundleResourceFolder())
+  for res in resources:
+    output = dest
+
+    # The make generator doesn't support it, so forbid it everywhere
+    # to keep the generators more interchangable.
+    assert ' ' not in res, (
+      "Spaces in resource filenames not supported (%s)"  % res)
+
+    # Split into (path,file).
+    res_parts = os.path.split(res)
+
+    # Now split the path into (prefix,maybe.lproj).
+    lproj_parts = os.path.split(res_parts[0])
+    # If the resource lives in a .lproj bundle, add that to the destination.
+    if lproj_parts[1].endswith('.lproj'):
+      output = os.path.join(output, lproj_parts[1])
+
+    output = os.path.join(output, res_parts[1])
+    # Compiled XIB files are referred to by .nib.
+    if output.endswith('.xib'):
+      output = os.path.splitext(output)[0] + '.nib'
+    # Compiled storyboard files are referred to by .storyboardc.
+    if output.endswith('.storyboard'):
+      output = os.path.splitext(output)[0] + '.storyboardc'
+
+    yield output, res
+
+
+def GetMacInfoPlist(product_dir, xcode_settings, gyp_path_to_build_path):
+  """Returns (info_plist, dest_plist, defines, extra_env), where:
+  * |info_plist| is the source plist path, relative to the
+    build directory,
+  * |dest_plist| is the destination plist path, relative to the
+    build directory,
+  * |defines| is a list of preprocessor defines (empty if the plist
+    shouldn't be preprocessed,
+  * |extra_env| is a dict of env variables that should be exported when
+    invoking |mac_tool copy-info-plist|.
+
+  Only call this for mac bundle targets.
+
+  Args:
+      product_dir: Path to the directory containing the output bundle,
+          relative to the build directory.
+      xcode_settings: The XcodeSettings of the current target.
+      gyp_to_build_path: A function that converts paths relative to the
+          current gyp file to paths relative to the build direcotry.
+  """
+  info_plist = xcode_settings.GetPerTargetSetting('INFOPLIST_FILE')
+  if not info_plist:
+    return None, None, [], {}
+
+  # The make generator doesn't support it, so forbid it everywhere
+  # to keep the generators more interchangable.
+  assert ' ' not in info_plist, (
+    "Spaces in Info.plist filenames not supported (%s)"  % info_plist)
+
+  info_plist = gyp_path_to_build_path(info_plist)
+
+  # If explicitly set to preprocess the plist, invoke the C preprocessor and
+  # specify any defines as -D flags.
+  if xcode_settings.GetPerTargetSetting(
+      'INFOPLIST_PREPROCESS', default='NO') == 'YES':
+    # Create an intermediate file based on the path.
+    defines = shlex.split(xcode_settings.GetPerTargetSetting(
+        'INFOPLIST_PREPROCESSOR_DEFINITIONS', default=''))
+  else:
+    defines = []
+
+  dest_plist = os.path.join(product_dir, xcode_settings.GetBundlePlistPath())
+  extra_env = xcode_settings.GetPerTargetSettings()
+
+  return info_plist, dest_plist, defines, extra_env
+
+
+def _GetXcodeEnv(xcode_settings, built_products_dir, srcroot, configuration,
+                additional_settings=None):
+  """Return the environment variables that Xcode would set. See
+  http://developer.apple.com/library/mac/#documentation/DeveloperTools/Reference/XcodeBuildSettingRef/1-Build_Setting_Reference/build_setting_ref.html#//apple_ref/doc/uid/TP40003931-CH3-SW153
+  for a full list.
+
+  Args:
+      xcode_settings: An XcodeSettings object. If this is None, this function
+          returns an empty dict.
+      built_products_dir: Absolute path to the built products dir.
+      srcroot: Absolute path to the source root.
+      configuration: The build configuration name.
+      additional_settings: An optional dict with more values to add to the
+          result.
+  """
+  if not xcode_settings: return {}
+
+  # This function is considered a friend of XcodeSettings, so let it reach into
+  # its implementation details.
+  spec = xcode_settings.spec
+
+  # These are filled in on a as-needed basis.
+  env = {
+    'BUILT_PRODUCTS_DIR' : built_products_dir,
+    'CONFIGURATION' : configuration,
+    'PRODUCT_NAME' : xcode_settings.GetProductName(),
+    # See /Developer/Platforms/MacOSX.platform/Developer/Library/Xcode/Specifications/MacOSX\ Product\ Types.xcspec for FULL_PRODUCT_NAME
+    'SRCROOT' : srcroot,
+    'SOURCE_ROOT': '${SRCROOT}',
+    # This is not true for static libraries, but currently the env is only
+    # written for bundles:
+    'TARGET_BUILD_DIR' : built_products_dir,
+    'TEMP_DIR' : '${TMPDIR}',
+  }
+  if xcode_settings.GetPerConfigSetting('SDKROOT', configuration):
+    env['SDKROOT'] = xcode_settings._SdkPath(configuration)
+  else:
+    env['SDKROOT'] = ''
+
+  if spec['type'] in (
+      'executable', 'static_library', 'shared_library', 'loadable_module'):
+    env['EXECUTABLE_NAME'] = xcode_settings.GetExecutableName()
+    env['EXECUTABLE_PATH'] = xcode_settings.GetExecutablePath()
+    env['FULL_PRODUCT_NAME'] = xcode_settings.GetFullProductName()
+    mach_o_type = xcode_settings.GetMachOType()
+    if mach_o_type:
+      env['MACH_O_TYPE'] = mach_o_type
+    env['PRODUCT_TYPE'] = xcode_settings.GetProductType()
+  if xcode_settings._IsBundle():
+    env['CONTENTS_FOLDER_PATH'] = \
+      xcode_settings.GetBundleContentsFolderPath()
+    env['UNLOCALIZED_RESOURCES_FOLDER_PATH'] = \
+        xcode_settings.GetBundleResourceFolder()
+    env['INFOPLIST_PATH'] = xcode_settings.GetBundlePlistPath()
+    env['WRAPPER_NAME'] = xcode_settings.GetWrapperName()
+
+  install_name = xcode_settings.GetInstallName()
+  if install_name:
+    env['LD_DYLIB_INSTALL_NAME'] = install_name
+  install_name_base = xcode_settings.GetInstallNameBase()
+  if install_name_base:
+    env['DYLIB_INSTALL_NAME_BASE'] = install_name_base
+
+  if not additional_settings:
+    additional_settings = {}
+  else:
+    # Flatten lists to strings.
+    for k in additional_settings:
+      if not isinstance(additional_settings[k], str):
+        additional_settings[k] = ' '.join(additional_settings[k])
+  additional_settings.update(env)
+
+  for k in additional_settings:
+    additional_settings[k] = _NormalizeEnvVarReferences(additional_settings[k])
+
+  return additional_settings
+
+
+def _NormalizeEnvVarReferences(str):
+  """Takes a string containing variable references in the form ${FOO}, $(FOO),
+  or $FOO, and returns a string with all variable references in the form ${FOO}.
+  """
+  # $FOO -> ${FOO}
+  str = re.sub(r'\$([a-zA-Z_][a-zA-Z0-9_]*)', r'${\1}', str)
+
+  # $(FOO) -> ${FOO}
+  matches = re.findall(r'(\$\(([a-zA-Z0-9\-_]+)\))', str)
+  for match in matches:
+    to_replace, variable = match
+    assert '$(' not in match, '$($(FOO)) variables not supported: ' + match
+    str = str.replace(to_replace, '${' + variable + '}')
+
+  return str
+
+
+def ExpandEnvVars(string, expansions):
+  """Expands ${VARIABLES}, $(VARIABLES), and $VARIABLES in string per the
+  expansions list. If the variable expands to something that references
+  another variable, this variable is expanded as well if it's in env --
+  until no variables present in env are left."""
+  for k, v in reversed(expansions):
+    string = string.replace('${' + k + '}', v)
+    string = string.replace('$(' + k + ')', v)
+    string = string.replace('$' + k, v)
+  return string
+
+
+def _TopologicallySortedEnvVarKeys(env):
+  """Takes a dict |env| whose values are strings that can refer to other keys,
+  for example env['foo'] = '$(bar) and $(baz)'. Returns a list L of all keys of
+  env such that key2 is after key1 in L if env[key2] refers to env[key1].
+
+  Throws an Exception in case of dependency cycles.
+  """
+  # Since environment variables can refer to other variables, the evaluation
+  # order is important. Below is the logic to compute the dependency graph
+  # and sort it.
+  regex = re.compile(r'\$\{([a-zA-Z0-9\-_]+)\}')
+  def GetEdges(node):
+    # Use a definition of edges such that user_of_variable -> used_varible.
+    # This happens to be easier in this case, since a variable's
+    # definition contains all variables it references in a single string.
+    # We can then reverse the result of the topological sort at the end.
+    # Since: reverse(topsort(DAG)) = topsort(reverse_edges(DAG))
+    matches = set([v for v in regex.findall(env[node]) if v in env])
+    for dependee in matches:
+      assert '${' not in dependee, 'Nested variables not supported: ' + dependee
+    return matches
+
+  try:
+    # Topologically sort, and then reverse, because we used an edge definition
+    # that's inverted from the expected result of this function (see comment
+    # above).
+    order = gyp.common.TopologicallySorted(env.keys(), GetEdges)
+    order.reverse()
+    return order
+  except gyp.common.CycleError, e:
+    raise GypError(
+        'Xcode environment variables are cyclically dependent: ' + str(e.nodes))
+
+
+def GetSortedXcodeEnv(xcode_settings, built_products_dir, srcroot,
+                      configuration, additional_settings=None):
+  env = _GetXcodeEnv(xcode_settings, built_products_dir, srcroot, configuration,
+                    additional_settings)
+  return [(key, env[key]) for key in _TopologicallySortedEnvVarKeys(env)]
+
+
+def GetSpecPostbuildCommands(spec, quiet=False):
+  """Returns the list of postbuilds explicitly defined on |spec|, in a form
+  executable by a shell."""
+  postbuilds = []
+  for postbuild in spec.get('postbuilds', []):
+    if not quiet:
+      postbuilds.append('echo POSTBUILD\\(%s\\) %s' % (
+            spec['target_name'], postbuild['postbuild_name']))
+    postbuilds.append(gyp.common.EncodePOSIXShellList(postbuild['action']))
+  return postbuilds
+
+
+def _HasIOSTarget(targets):
+  """Returns true if any target contains the iOS specific key
+  IPHONEOS_DEPLOYMENT_TARGET."""
+  for target_dict in targets.values():
+    for config in target_dict['configurations'].values():
+      if config.get('xcode_settings', {}).get('IPHONEOS_DEPLOYMENT_TARGET'):
+        return True
+  return False
+
+
+def _AddIOSDeviceConfigurations(targets):
+  """Clone all targets and append -iphoneos to the name. Configure these targets
+  to build for iOS devices."""
+  for target_dict in targets.values():
+    for config_name in target_dict['configurations'].keys():
+      config = target_dict['configurations'][config_name]
+      new_config_name = config_name + '-iphoneos'
+      new_config_dict = copy.deepcopy(config)
+      if target_dict['toolset'] == 'target':
+        new_config_dict['xcode_settings']['ARCHS'] = ['armv7']
+        new_config_dict['xcode_settings']['SDKROOT'] = 'iphoneos'
+      target_dict['configurations'][new_config_name] = new_config_dict
+  return targets
+
+def CloneConfigurationForDeviceAndEmulator(target_dicts):
+  """If |target_dicts| contains any iOS targets, automatically create -iphoneos
+  targets for iOS device builds."""
+  if _HasIOSTarget(target_dicts):
+    return _AddIOSDeviceConfigurations(target_dicts)
+  return target_dicts
diff --git a/deps/gyp/pylib/gyp/xcodeproj_file.py b/deps/gyp/pylib/gyp/xcodeproj_file.py
new file mode 100644
index 0000000000..79c3abcf02
--- /dev/null
+++ b/deps/gyp/pylib/gyp/xcodeproj_file.py
@@ -0,0 +1,2889 @@
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Xcode project file generator.
+
+This module is both an Xcode project file generator and a documentation of the
+Xcode project file format.  Knowledge of the project file format was gained
+based on extensive experience with Xcode, and by making changes to projects in
+Xcode.app and observing the resultant changes in the associated project files.
+
+XCODE PROJECT FILES
+
+The generator targets the file format as written by Xcode 3.2 (specifically,
+3.2.6), but past experience has taught that the format has not changed
+significantly in the past several years, and future versions of Xcode are able
+to read older project files.
+
+Xcode project files are "bundled": the project "file" from an end-user's
+perspective is actually a directory with an ".xcodeproj" extension.  The
+project file from this module's perspective is actually a file inside this
+directory, always named "project.pbxproj".  This file contains a complete
+description of the project and is all that is needed to use the xcodeproj.
+Other files contained in the xcodeproj directory are simply used to store
+per-user settings, such as the state of various UI elements in the Xcode
+application.
+
+The project.pbxproj file is a property list, stored in a format almost
+identical to the NeXTstep property list format.  The file is able to carry
+Unicode data, and is encoded in UTF-8.  The root element in the property list
+is a dictionary that contains several properties of minimal interest, and two
+properties of immense interest.  The most important property is a dictionary
+named "objects".  The entire structure of the project is represented by the
+children of this property.  The objects dictionary is keyed by unique 96-bit
+values represented by 24 uppercase hexadecimal characters.  Each value in the
+objects dictionary is itself a dictionary, describing an individual object.
+
+Each object in the dictionary is a member of a class, which is identified by
+the "isa" property of each object.  A variety of classes are represented in a
+project file.  Objects can refer to other objects by ID, using the 24-character
+hexadecimal object key.  A project's objects form a tree, with a root object
+of class PBXProject at the root.  As an example, the PBXProject object serves
+as parent to an XCConfigurationList object defining the build configurations
+used in the project, a PBXGroup object serving as a container for all files
+referenced in the project, and a list of target objects, each of which defines
+a target in the project.  There are several different types of target object,
+such as PBXNativeTarget and PBXAggregateTarget.  In this module, this
+relationship is expressed by having each target type derive from an abstract
+base named XCTarget.
+
+The project.pbxproj file's root dictionary also contains a property, sibling to
+the "objects" dictionary, named "rootObject".  The value of rootObject is a
+24-character object key referring to the root PBXProject object in the
+objects dictionary.
+
+In Xcode, every file used as input to a target or produced as a final product
+of a target must appear somewhere in the hierarchy rooted at the PBXGroup
+object referenced by the PBXProject's mainGroup property.  A PBXGroup is
+generally represented as a folder in the Xcode application.  PBXGroups can
+contain other PBXGroups as well as PBXFileReferences, which are pointers to
+actual files.
+
+Each XCTarget contains a list of build phases, represented in this module by
+the abstract base XCBuildPhase.  Examples of concrete XCBuildPhase derivations
+are PBXSourcesBuildPhase and PBXFrameworksBuildPhase, which correspond to the
+"Compile Sources" and "Link Binary With Libraries" phases displayed in the
+Xcode application.  Files used as input to these phases (for example, source
+files in the former case and libraries and frameworks in the latter) are
+represented by PBXBuildFile objects, referenced by elements of "files" lists
+in XCTarget objects.  Each PBXBuildFile object refers to a PBXBuildFile
+object as a "weak" reference: it does not "own" the PBXBuildFile, which is
+owned by the root object's mainGroup or a descendant group.  In most cases, the
+layer of indirection between an XCBuildPhase and a PBXFileReference via a
+PBXBuildFile appears extraneous, but there's actually one reason for this:
+file-specific compiler flags are added to the PBXBuildFile object so as to
+allow a single file to be a member of multiple targets while having distinct
+compiler flags for each.  These flags can be modified in the Xcode applciation
+in the "Build" tab of a File Info window.
+
+When a project is open in the Xcode application, Xcode will rewrite it.  As
+such, this module is careful to adhere to the formatting used by Xcode, to
+avoid insignificant changes appearing in the file when it is used in the
+Xcode application.  This will keep version control repositories happy, and
+makes it possible to compare a project file used in Xcode to one generated by
+this module to determine if any significant changes were made in the
+application.
+
+Xcode has its own way of assigning 24-character identifiers to each object,
+which is not duplicated here.  Because the identifier only is only generated
+once, when an object is created, and is then left unchanged, there is no need
+to attempt to duplicate Xcode's behavior in this area.  The generator is free
+to select any identifier, even at random, to refer to the objects it creates,
+and Xcode will retain those identifiers and use them when subsequently
+rewriting the project file.  However, the generator would choose new random
+identifiers each time the project files are generated, leading to difficulties
+comparing "used" project files to "pristine" ones produced by this module,
+and causing the appearance of changes as every object identifier is changed
+when updated projects are checked in to a version control repository.  To
+mitigate this problem, this module chooses identifiers in a more deterministic
+way, by hashing a description of each object as well as its parent and ancestor
+objects.  This strategy should result in minimal "shift" in IDs as successive
+generations of project files are produced.
+
+THIS MODULE
+
+This module introduces several classes, all derived from the XCObject class.
+Nearly all of the "brains" are built into the XCObject class, which understands
+how to create and modify objects, maintain the proper tree structure, compute
+identifiers, and print objects.  For the most part, classes derived from
+XCObject need only provide a _schema class object, a dictionary that
+expresses what properties objects of the class may contain.
+
+Given this structure, it's possible to build a minimal project file by creating
+objects of the appropriate types and making the proper connections:
+
+  config_list = XCConfigurationList()
+  group = PBXGroup()
+  project = PBXProject({'buildConfigurationList': config_list,
+                        'mainGroup': group})
+
+With the project object set up, it can be added to an XCProjectFile object.
+XCProjectFile is a pseudo-class in the sense that it is a concrete XCObject
+subclass that does not actually correspond to a class type found in a project
+file.  Rather, it is used to represent the project file's root dictionary.
+Printing an XCProjectFile will print the entire project file, including the
+full "objects" dictionary.
+
+  project_file = XCProjectFile({'rootObject': project})
+  project_file.ComputeIDs()
+  project_file.Print()
+
+Xcode project files are always encoded in UTF-8.  This module will accept
+strings of either the str class or the unicode class.  Strings of class str
+are assumed to already be encoded in UTF-8.  Obviously, if you're just using
+ASCII, you won't encounter difficulties because ASCII is a UTF-8 subset.
+Strings of class unicode are handled properly and encoded in UTF-8 when
+a project file is output.
+"""
+
+import gyp.common
+import posixpath
+import re
+import struct
+import sys
+
+# hashlib is supplied as of Python 2.5 as the replacement interface for sha
+# and other secure hashes.  In 2.6, sha is deprecated.  Import hashlib if
+# available, avoiding a deprecation warning under 2.6.  Import sha otherwise,
+# preserving 2.4 compatibility.
+try:
+  import hashlib
+  _new_sha1 = hashlib.sha1
+except ImportError:
+  import sha
+  _new_sha1 = sha.new
+
+
+# See XCObject._EncodeString.  This pattern is used to determine when a string
+# can be printed unquoted.  Strings that match this pattern may be printed
+# unquoted.  Strings that do not match must be quoted and may be further
+# transformed to be properly encoded.  Note that this expression matches the
+# characters listed with "+", for 1 or more occurrences: if a string is empty,
+# it must not match this pattern, because it needs to be encoded as "".
+_unquoted = re.compile('^[A-Za-z0-9$./_]+$')
+
+# Strings that match this pattern are quoted regardless of what _unquoted says.
+# Oddly, Xcode will quote any string with a run of three or more underscores.
+_quoted = re.compile('___')
+
+# This pattern should match any character that needs to be escaped by
+# XCObject._EncodeString.  See that function.
+_escaped = re.compile('[\\\\"]|[\x00-\x1f]')
+
+
+# Used by SourceTreeAndPathFromPath
+_path_leading_variable = re.compile('^\$\((.*?)\)(/(.*))?$')
+
+def SourceTreeAndPathFromPath(input_path):
+  """Given input_path, returns a tuple with sourceTree and path values.
+
+  Examples:
+    input_path     (source_tree, output_path)
+    '$(VAR)/path'  ('VAR', 'path')
+    '$(VAR)'       ('VAR', None)
+    'path'         (None, 'path')
+  """
+
+  source_group_match = _path_leading_variable.match(input_path)
+  if source_group_match:
+    source_tree = source_group_match.group(1)
+    output_path = source_group_match.group(3)  # This may be None.
+  else:
+    source_tree = None
+    output_path = input_path
+
+  return (source_tree, output_path)
+
+def ConvertVariablesToShellSyntax(input_string):
+  return re.sub('\$\((.*?)\)', '${\\1}', input_string)
+
+class XCObject(object):
+  """The abstract base of all class types used in Xcode project files.
+
+  Class variables:
+    _schema: A dictionary defining the properties of this class.  The keys to
+             _schema are string property keys as used in project files.  Values
+             are a list of four or five elements:
+             [ is_list, property_type, is_strong, is_required, default ]
+             is_list: True if the property described is a list, as opposed
+                      to a single element.
+             property_type: The type to use as the value of the property,
+                            or if is_list is True, the type to use for each
+                            element of the value's list.  property_type must
+                            be an XCObject subclass, or one of the built-in
+                            types str, int, or dict.
+             is_strong: If property_type is an XCObject subclass, is_strong
+                        is True to assert that this class "owns," or serves
+                        as parent, to the property value (or, if is_list is
+                        True, values).  is_strong must be False if
+                        property_type is not an XCObject subclass.
+             is_required: True if the property is required for the class.
+                          Note that is_required being True does not preclude
+                          an empty string ("", in the case of property_type
+                          str) or list ([], in the case of is_list True) from
+                          being set for the property.
+             default: Optional.  If is_requried is True, default may be set
+                      to provide a default value for objects that do not supply
+                      their own value.  If is_required is True and default
+                      is not provided, users of the class must supply their own
+                      value for the property.
+             Note that although the values of the array are expressed in
+             boolean terms, subclasses provide values as integers to conserve
+             horizontal space.
+    _should_print_single_line: False in XCObject.  Subclasses whose objects
+                               should be written to the project file in the
+                               alternate single-line format, such as
+                               PBXFileReference and PBXBuildFile, should
+                               set this to True.
+    _encode_transforms: Used by _EncodeString to encode unprintable characters.
+                        The index into this list is the ordinal of the
+                        character to transform; each value is a string
+                        used to represent the character in the output.  XCObject
+                        provides an _encode_transforms list suitable for most
+                        XCObject subclasses.
+    _alternate_encode_transforms: Provided for subclasses that wish to use
+                                  the alternate encoding rules.  Xcode seems
+                                  to use these rules when printing objects in
+                                  single-line format.  Subclasses that desire
+                                  this behavior should set _encode_transforms
+                                  to _alternate_encode_transforms.
+    _hashables: A list of XCObject subclasses that can be hashed by ComputeIDs
+                to construct this object's ID.  Most classes that need custom
+                hashing behavior should do it by overriding Hashables,
+                but in some cases an object's parent may wish to push a
+                hashable value into its child, and it can do so by appending
+                to _hashables.
+  Attributes:
+    id: The object's identifier, a 24-character uppercase hexadecimal string.
+        Usually, objects being created should not set id until the entire
+        project file structure is built.  At that point, UpdateIDs() should
+        be called on the root object to assign deterministic values for id to
+        each object in the tree.
+    parent: The object's parent.  This is set by a parent XCObject when a child
+            object is added to it.
+    _properties: The object's property dictionary.  An object's properties are
+                 described by its class' _schema variable.
+  """
+
+  _schema = {}
+  _should_print_single_line = False
+
+  # See _EncodeString.
+  _encode_transforms = []
+  i = 0
+  while i < ord(' '):
+    _encode_transforms.append('\\U%04x' % i)
+    i = i + 1
+  _encode_transforms[7] = '\\a'
+  _encode_transforms[8] = '\\b'
+  _encode_transforms[9] = '\\t'
+  _encode_transforms[10] = '\\n'
+  _encode_transforms[11] = '\\v'
+  _encode_transforms[12] = '\\f'
+  _encode_transforms[13] = '\\n'
+
+  _alternate_encode_transforms = list(_encode_transforms)
+  _alternate_encode_transforms[9] = chr(9)
+  _alternate_encode_transforms[10] = chr(10)
+  _alternate_encode_transforms[11] = chr(11)
+
+  def __init__(self, properties=None, id=None, parent=None):
+    self.id = id
+    self.parent = parent
+    self._properties = {}
+    self._hashables = []
+    self._SetDefaultsFromSchema()
+    self.UpdateProperties(properties)
+
+  def __repr__(self):
+    try:
+      name = self.Name()
+    except NotImplementedError:
+      return '<%s at 0x%x>' % (self.__class__.__name__, id(self))
+    return '<%s %r at 0x%x>' % (self.__class__.__name__, name, id(self))
+
+  def Copy(self):
+    """Make a copy of this object.
+
+    The new object will have its own copy of lists and dicts.  Any XCObject
+    objects owned by this object (marked "strong") will be copied in the
+    new object, even those found in lists.  If this object has any weak
+    references to other XCObjects, the same references are added to the new
+    object without making a copy.
+    """
+
+    that = self.__class__(id=self.id, parent=self.parent)
+    for key, value in self._properties.iteritems():
+      is_strong = self._schema[key][2]
+
+      if isinstance(value, XCObject):
+        if is_strong:
+          new_value = value.Copy()
+          new_value.parent = that
+          that._properties[key] = new_value
+        else:
+          that._properties[key] = value
+      elif isinstance(value, str) or isinstance(value, unicode) or \
+           isinstance(value, int):
+        that._properties[key] = value
+      elif isinstance(value, list):
+        if is_strong:
+          # If is_strong is True, each element is an XCObject, so it's safe to
+          # call Copy.
+          that._properties[key] = []
+          for item in value:
+            new_item = item.Copy()
+            new_item.parent = that
+            that._properties[key].append(new_item)
+        else:
+          that._properties[key] = value[:]
+      elif isinstance(value, dict):
+        # dicts are never strong.
+        if is_strong:
+          raise TypeError, 'Strong dict for key ' + key + ' in ' + \
+                           self.__class__.__name__
+        else:
+          that._properties[key] = value.copy()
+      else:
+        raise TypeError, 'Unexpected type ' + value.__class__.__name__ + \
+                         ' for key ' + key + ' in ' + self.__class__.__name__
+
+    return that
+
+  def Name(self):
+    """Return the name corresponding to an object.
+
+    Not all objects necessarily need to be nameable, and not all that do have
+    a "name" property.  Override as needed.
+    """
+
+    # If the schema indicates that "name" is required, try to access the
+    # property even if it doesn't exist.  This will result in a KeyError
+    # being raised for the property that should be present, which seems more
+    # appropriate than NotImplementedError in this case.
+    if 'name' in self._properties or \
+        ('name' in self._schema and self._schema['name'][3]):
+      return self._properties['name']
+
+    raise NotImplementedError, \
+          self.__class__.__name__ + ' must implement Name'
+
+  def Comment(self):
+    """Return a comment string for the object.
+
+    Most objects just use their name as the comment, but PBXProject uses
+    different values.
+
+    The returned comment is not escaped and does not have any comment marker
+    strings applied to it.
+    """
+
+    return self.Name()
+
+  def Hashables(self):
+    hashables = [self.__class__.__name__]
+
+    name = self.Name()
+    if name != None:
+      hashables.append(name)
+
+    hashables.extend(self._hashables)
+
+    return hashables
+
+  def HashablesForChild(self):
+    return None
+
+  def ComputeIDs(self, recursive=True, overwrite=True, seed_hash=None):
+    """Set "id" properties deterministically.
+
+    An object's "id" property is set based on a hash of its class type and
+    name, as well as the class type and name of all ancestor objects.  As
+    such, it is only advisable to call ComputeIDs once an entire project file
+    tree is built.
+
+    If recursive is True, recurse into all descendant objects and update their
+    hashes.
+
+    If overwrite is True, any existing value set in the "id" property will be
+    replaced.
+    """
+
+    def _HashUpdate(hash, data):
+      """Update hash with data's length and contents.
+
+      If the hash were updated only with the value of data, it would be
+      possible for clowns to induce collisions by manipulating the names of
+      their objects.  By adding the length, it's exceedingly less likely that
+      ID collisions will be encountered, intentionally or not.
+      """
+
+      hash.update(struct.pack('>i', len(data)))
+      hash.update(data)
+
+    if seed_hash is None:
+      seed_hash = _new_sha1()
+
+    hash = seed_hash.copy()
+
+    hashables = self.Hashables()
+    assert len(hashables) > 0
+    for hashable in hashables:
+      _HashUpdate(hash, hashable)
+
+    if recursive:
+      hashables_for_child = self.HashablesForChild()
+      if hashables_for_child is None:
+        child_hash = hash
+      else:
+        assert len(hashables_for_child) > 0
+        child_hash = seed_hash.copy()
+        for hashable in hashables_for_child:
+          _HashUpdate(child_hash, hashable)
+
+      for child in self.Children():
+        child.ComputeIDs(recursive, overwrite, child_hash)
+
+    if overwrite or self.id is None:
+      # Xcode IDs are only 96 bits (24 hex characters), but a SHA-1 digest is
+      # is 160 bits.  Instead of throwing out 64 bits of the digest, xor them
+      # into the portion that gets used.
+      assert hash.digest_size % 4 == 0
+      digest_int_count = hash.digest_size / 4
+      digest_ints = struct.unpack('>' + 'I' * digest_int_count, hash.digest())
+      id_ints = [0, 0, 0]
+      for index in xrange(0, digest_int_count):
+        id_ints[index % 3] ^= digest_ints[index]
+      self.id = '%08X%08X%08X' % tuple(id_ints)
+
+  def EnsureNoIDCollisions(self):
+    """Verifies that no two objects have the same ID.  Checks all descendants.
+    """
+
+    ids = {}
+    descendants = self.Descendants()
+    for descendant in descendants:
+      if descendant.id in ids:
+        other = ids[descendant.id]
+        raise KeyError, \
+              'Duplicate ID %s, objects "%s" and "%s" in "%s"' % \
+              (descendant.id, str(descendant._properties),
+               str(other._properties), self._properties['rootObject'].Name())
+      ids[descendant.id] = descendant
+
+  def Children(self):
+    """Returns a list of all of this object's owned (strong) children."""
+
+    children = []
+    for property, attributes in self._schema.iteritems():
+      (is_list, property_type, is_strong) = attributes[0:3]
+      if is_strong and property in self._properties:
+        if not is_list:
+          children.append(self._properties[property])
+        else:
+          children.extend(self._properties[property])
+    return children
+
+  def Descendants(self):
+    """Returns a list of all of this object's descendants, including this
+    object.
+    """
+
+    children = self.Children()
+    descendants = [self]
+    for child in children:
+      descendants.extend(child.Descendants())
+    return descendants
+
+  def PBXProjectAncestor(self):
+    # The base case for recursion is defined at PBXProject.PBXProjectAncestor.
+    if self.parent:
+      return self.parent.PBXProjectAncestor()
+    return None
+
+  def _EncodeComment(self, comment):
+    """Encodes a comment to be placed in the project file output, mimicing
+    Xcode behavior.
+    """
+
+    # This mimics Xcode behavior by wrapping the comment in "/*" and "*/".  If
+    # the string already contains a "*/", it is turned into "(*)/".  This keeps
+    # the file writer from outputting something that would be treated as the
+    # end of a comment in the middle of something intended to be entirely a
+    # comment.
+
+    return '/* ' + comment.replace('*/', '(*)/') + ' */'
+
+  def _EncodeTransform(self, match):
+    # This function works closely with _EncodeString.  It will only be called
+    # by re.sub with match.group(0) containing a character matched by the
+    # the _escaped expression.
+    char = match.group(0)
+
+    # Backslashes (\) and quotation marks (") are always replaced with a
+    # backslash-escaped version of the same.  Everything else gets its
+    # replacement from the class' _encode_transforms array.
+    if char == '\\':
+      return '\\\\'
+    if char == '"':
+      return '\\"'
+    return self._encode_transforms[ord(char)]
+
+  def _EncodeString(self, value):
+    """Encodes a string to be placed in the project file output, mimicing
+    Xcode behavior.
+    """
+
+    # Use quotation marks when any character outside of the range A-Z, a-z, 0-9,
+    # $ (dollar sign), . (period), and _ (underscore) is present.  Also use
+    # quotation marks to represent empty strings.
+    #
+    # Escape " (double-quote) and \ (backslash) by preceding them with a
+    # backslash.
+    #
+    # Some characters below the printable ASCII range are encoded specially:
+    #     7 ^G BEL is encoded as "\a"
+    #     8 ^H BS  is encoded as "\b"
+    #    11 ^K VT  is encoded as "\v"
+    #    12 ^L NP  is encoded as "\f"
+    #   127 ^? DEL is passed through as-is without escaping
+    #  - In PBXFileReference and PBXBuildFile objects:
+    #     9 ^I HT  is passed through as-is without escaping
+    #    10 ^J NL  is passed through as-is without escaping
+    #    13 ^M CR  is passed through as-is without escaping
+    #  - In other objects:
+    #     9 ^I HT  is encoded as "\t"
+    #    10 ^J NL  is encoded as "\n"
+    #    13 ^M CR  is encoded as "\n" rendering it indistinguishable from
+    #              10 ^J NL
+    # All other characters within the ASCII control character range (0 through
+    # 31 inclusive) are encoded as "\U001f" referring to the Unicode code point
+    # in hexadecimal.  For example, character 14 (^N SO) is encoded as "\U000e".
+    # Characters above the ASCII range are passed through to the output encoded
+    # as UTF-8 without any escaping.  These mappings are contained in the
+    # class' _encode_transforms list.
+
+    if _unquoted.search(value) and not _quoted.search(value):
+      return value
+
+    return '"' + _escaped.sub(self._EncodeTransform, value) + '"'
+
+  def _XCPrint(self, file, tabs, line):
+    file.write('\t' * tabs + line)
+
+  def _XCPrintableValue(self, tabs, value, flatten_list=False):
+    """Returns a representation of value that may be printed in a project file,
+    mimicing Xcode's behavior.
+
+    _XCPrintableValue can handle str and int values, XCObjects (which are
+    made printable by returning their id property), and list and dict objects
+    composed of any of the above types.  When printing a list or dict, and
+    _should_print_single_line is False, the tabs parameter is used to determine
+    how much to indent the lines corresponding to the items in the list or
+    dict.
+
+    If flatten_list is True, single-element lists will be transformed into
+    strings.
+    """
+
+    printable = ''
+    comment = None
+
+    if self._should_print_single_line:
+      sep = ' '
+      element_tabs = ''
+      end_tabs = ''
+    else:
+      sep = '\n'
+      element_tabs = '\t' * (tabs + 1)
+      end_tabs = '\t' * tabs
+
+    if isinstance(value, XCObject):
+      printable += value.id
+      comment = value.Comment()
+    elif isinstance(value, str):
+      printable += self._EncodeString(value)
+    elif isinstance(value, unicode):
+      printable += self._EncodeString(value.encode('utf-8'))
+    elif isinstance(value, int):
+      printable += str(value)
+    elif isinstance(value, list):
+      if flatten_list and len(value) <= 1:
+        if len(value) == 0:
+          printable += self._EncodeString('')
+        else:
+          printable += self._EncodeString(value[0])
+      else:
+        printable = '(' + sep
+        for item in value:
+          printable += element_tabs + \
+                       self._XCPrintableValue(tabs + 1, item, flatten_list) + \
+                       ',' + sep
+        printable += end_tabs + ')'
+    elif isinstance(value, dict):
+      printable = '{' + sep
+      for item_key, item_value in sorted(value.iteritems()):
+        printable += element_tabs + \
+            self._XCPrintableValue(tabs + 1, item_key, flatten_list) + ' = ' + \
+            self._XCPrintableValue(tabs + 1, item_value, flatten_list) + ';' + \
+            sep
+      printable += end_tabs + '}'
+    else:
+      raise TypeError, "Can't make " + value.__class__.__name__ + ' printable'
+
+    if comment != None:
+      printable += ' ' + self._EncodeComment(comment)
+
+    return printable
+
+  def _XCKVPrint(self, file, tabs, key, value):
+    """Prints a key and value, members of an XCObject's _properties dictionary,
+    to file.
+
+    tabs is an int identifying the indentation level.  If the class'
+    _should_print_single_line variable is True, tabs is ignored and the
+    key-value pair will be followed by a space insead of a newline.
+    """
+
+    if self._should_print_single_line:
+      printable = ''
+      after_kv = ' '
+    else:
+      printable = '\t' * tabs
+      after_kv = '\n'
+
+    # Xcode usually prints remoteGlobalIDString values in PBXContainerItemProxy
+    # objects without comments.  Sometimes it prints them with comments, but
+    # the majority of the time, it doesn't.  To avoid unnecessary changes to
+    # the project file after Xcode opens it, don't write comments for
+    # remoteGlobalIDString.  This is a sucky hack and it would certainly be
+    # cleaner to extend the schema to indicate whether or not a comment should
+    # be printed, but since this is the only case where the problem occurs and
+    # Xcode itself can't seem to make up its mind, the hack will suffice.
+    #
+    # Also see PBXContainerItemProxy._schema['remoteGlobalIDString'].
+    if key == 'remoteGlobalIDString' and isinstance(self,
+                                                    PBXContainerItemProxy):
+      value_to_print = value.id
+    else:
+      value_to_print = value
+
+    # PBXBuildFile's settings property is represented in the output as a dict,
+    # but a hack here has it represented as a string. Arrange to strip off the
+    # quotes so that it shows up in the output as expected.
+    if key == 'settings' and isinstance(self, PBXBuildFile):
+      strip_value_quotes = True
+    else:
+      strip_value_quotes = False
+
+    # In another one-off, let's set flatten_list on buildSettings properties
+    # of XCBuildConfiguration objects, because that's how Xcode treats them.
+    if key == 'buildSettings' and isinstance(self, XCBuildConfiguration):
+      flatten_list = True
+    else:
+      flatten_list = False
+
+    try:
+      printable_key = self._XCPrintableValue(tabs, key, flatten_list)
+      printable_value = self._XCPrintableValue(tabs, value_to_print,
+                                               flatten_list)
+      if strip_value_quotes and len(printable_value) > 1 and \
+          printable_value[0] == '"' and printable_value[-1] == '"':
+        printable_value = printable_value[1:-1]
+      printable += printable_key + ' = ' + printable_value + ';' + after_kv
+    except TypeError, e:
+      gyp.common.ExceptionAppend(e,
+                                 'while printing key "%s"' % key)
+      raise
+
+    self._XCPrint(file, 0, printable)
+
+  def Print(self, file=sys.stdout):
+    """Prints a reprentation of this object to file, adhering to Xcode output
+    formatting.
+    """
+
+    self.VerifyHasRequiredProperties()
+
+    if self._should_print_single_line:
+      # When printing an object in a single line, Xcode doesn't put any space
+      # between the beginning of a dictionary (or presumably a list) and the
+      # first contained item, so you wind up with snippets like
+      #   ...CDEF = {isa = PBXFileReference; fileRef = 0123...
+      # If it were me, I would have put a space in there after the opening
+      # curly, but I guess this is just another one of those inconsistencies
+      # between how Xcode prints PBXFileReference and PBXBuildFile objects as
+      # compared to other objects.  Mimic Xcode's behavior here by using an
+      # empty string for sep.
+      sep = ''
+      end_tabs = 0
+    else:
+      sep = '\n'
+      end_tabs = 2
+
+    # Start the object.  For example, '\t\tPBXProject = {\n'.
+    self._XCPrint(file, 2, self._XCPrintableValue(2, self) + ' = {' + sep)
+
+    # "isa" isn't in the _properties dictionary, it's an intrinsic property
+    # of the class which the object belongs to.  Xcode always outputs "isa"
+    # as the first element of an object dictionary.
+    self._XCKVPrint(file, 3, 'isa', self.__class__.__name__)
+
+    # The remaining elements of an object dictionary are sorted alphabetically.
+    for property, value in sorted(self._properties.iteritems()):
+      self._XCKVPrint(file, 3, property, value)
+
+    # End the object.
+    self._XCPrint(file, end_tabs, '};\n')
+
+  def UpdateProperties(self, properties, do_copy=False):
+    """Merge the supplied properties into the _properties dictionary.
+
+    The input properties must adhere to the class schema or a KeyError or
+    TypeError exception will be raised.  If adding an object of an XCObject
+    subclass and the schema indicates a strong relationship, the object's
+    parent will be set to this object.
+
+    If do_copy is True, then lists, dicts, strong-owned XCObjects, and
+    strong-owned XCObjects in lists will be copied instead of having their
+    references added.
+    """
+
+    if properties is None:
+      return
+
+    for property, value in properties.iteritems():
+      # Make sure the property is in the schema.
+      if not property in self._schema:
+        raise KeyError, property + ' not in ' + self.__class__.__name__
+
+      # Make sure the property conforms to the schema.
+      (is_list, property_type, is_strong) = self._schema[property][0:3]
+      if is_list:
+        if value.__class__ != list:
+          raise TypeError, \
+                property + ' of ' + self.__class__.__name__ + \
+                ' must be list, not ' + value.__class__.__name__
+        for item in value:
+          if not isinstance(item, property_type) and \
+             not (item.__class__ == unicode and property_type == str):
+            # Accept unicode where str is specified.  str is treated as
+            # UTF-8-encoded.
+            raise TypeError, \
+                  'item of ' + property + ' of ' + self.__class__.__name__ + \
+                  ' must be ' + property_type.__name__ + ', not ' + \
+                  item.__class__.__name__
+      elif not isinstance(value, property_type) and \
+           not (value.__class__ == unicode and property_type == str):
+        # Accept unicode where str is specified.  str is treated as
+        # UTF-8-encoded.
+        raise TypeError, \
+              property + ' of ' + self.__class__.__name__ + ' must be ' + \
+              property_type.__name__ + ', not ' + value.__class__.__name__
+
+      # Checks passed, perform the assignment.
+      if do_copy:
+        if isinstance(value, XCObject):
+          if is_strong:
+            self._properties[property] = value.Copy()
+          else:
+            self._properties[property] = value
+        elif isinstance(value, str) or isinstance(value, unicode) or \
+             isinstance(value, int):
+          self._properties[property] = value
+        elif isinstance(value, list):
+          if is_strong:
+            # If is_strong is True, each element is an XCObject, so it's safe
+            # to call Copy.
+            self._properties[property] = []
+            for item in value:
+              self._properties[property].append(item.Copy())
+          else:
+            self._properties[property] = value[:]
+        elif isinstance(value, dict):
+          self._properties[property] = value.copy()
+        else:
+          raise TypeError, "Don't know how to copy a " + \
+                           value.__class__.__name__ + ' object for ' + \
+                           property + ' in ' + self.__class__.__name__
+      else:
+        self._properties[property] = value
+
+      # Set up the child's back-reference to this object.  Don't use |value|
+      # any more because it may not be right if do_copy is true.
+      if is_strong:
+        if not is_list:
+          self._properties[property].parent = self
+        else:
+          for item in self._properties[property]:
+            item.parent = self
+
+  def HasProperty(self, key):
+    return key in self._properties
+
+  def GetProperty(self, key):
+    return self._properties[key]
+
+  def SetProperty(self, key, value):
+    self.UpdateProperties({key: value})
+
+  def DelProperty(self, key):
+    if key in self._properties:
+      del self._properties[key]
+
+  def AppendProperty(self, key, value):
+    # TODO(mark): Support ExtendProperty too (and make this call that)?
+
+    # Schema validation.
+    if not key in self._schema:
+      raise KeyError, key + ' not in ' + self.__class__.__name__
+
+    (is_list, property_type, is_strong) = self._schema[key][0:3]
+    if not is_list:
+      raise TypeError, key + ' of ' + self.__class__.__name__ + ' must be list'
+    if not isinstance(value, property_type):
+      raise TypeError, 'item of ' + key + ' of ' + self.__class__.__name__ + \
+                       ' must be ' + property_type.__name__ + ', not ' + \
+                       value.__class__.__name__
+
+    # If the property doesn't exist yet, create a new empty list to receive the
+    # item.
+    if not key in self._properties:
+      self._properties[key] = []
+
+    # Set up the ownership link.
+    if is_strong:
+      value.parent = self
+
+    # Store the item.
+    self._properties[key].append(value)
+
+  def VerifyHasRequiredProperties(self):
+    """Ensure that all properties identified as required by the schema are
+    set.
+    """
+
+    # TODO(mark): A stronger verification mechanism is needed.  Some
+    # subclasses need to perform validation beyond what the schema can enforce.
+    for property, attributes in self._schema.iteritems():
+      (is_list, property_type, is_strong, is_required) = attributes[0:4]
+      if is_required and not property in self._properties:
+        raise KeyError, self.__class__.__name__ + ' requires ' + property
+
+  def _SetDefaultsFromSchema(self):
+    """Assign object default values according to the schema.  This will not
+    overwrite properties that have already been set."""
+
+    defaults = {}
+    for property, attributes in self._schema.iteritems():
+      (is_list, property_type, is_strong, is_required) = attributes[0:4]
+      if is_required and len(attributes) >= 5 and \
+          not property in self._properties:
+        default = attributes[4]
+
+        defaults[property] = default
+
+    if len(defaults) > 0:
+      # Use do_copy=True so that each new object gets its own copy of strong
+      # objects, lists, and dicts.
+      self.UpdateProperties(defaults, do_copy=True)
+
+
+class XCHierarchicalElement(XCObject):
+  """Abstract base for PBXGroup and PBXFileReference.  Not represented in a
+  project file."""
+
+  # TODO(mark): Do name and path belong here?  Probably so.
+  # If path is set and name is not, name may have a default value.  Name will
+  # be set to the basename of path, if the basename of path is different from
+  # the full value of path.  If path is already just a leaf name, name will
+  # not be set.
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'comments':       [0, str, 0, 0],
+    'fileEncoding':   [0, str, 0, 0],
+    'includeInIndex': [0, int, 0, 0],
+    'indentWidth':    [0, int, 0, 0],
+    'lineEnding':     [0, int, 0, 0],
+    'sourceTree':     [0, str, 0, 1, '<group>'],
+    'tabWidth':       [0, int, 0, 0],
+    'usesTabs':       [0, int, 0, 0],
+    'wrapsLines':     [0, int, 0, 0],
+  })
+
+  def __init__(self, properties=None, id=None, parent=None):
+    # super
+    XCObject.__init__(self, properties, id, parent)
+    if 'path' in self._properties and not 'name' in self._properties:
+      path = self._properties['path']
+      name = posixpath.basename(path)
+      if name != '' and path != name:
+        self.SetProperty('name', name)
+
+    if 'path' in self._properties and \
+        (not 'sourceTree' in self._properties or \
+         self._properties['sourceTree'] == '<group>'):
+      # If the pathname begins with an Xcode variable like "$(SDKROOT)/", take
+      # the variable out and make the path be relative to that variable by
+      # assigning the variable name as the sourceTree.
+      (source_tree, path) = SourceTreeAndPathFromPath(self._properties['path'])
+      if source_tree != None:
+        self._properties['sourceTree'] = source_tree
+      if path != None:
+        self._properties['path'] = path
+      if source_tree != None and path is None and \
+         not 'name' in self._properties:
+        # The path was of the form "$(SDKROOT)" with no path following it.
+        # This object is now relative to that variable, so it has no path
+        # attribute of its own.  It does, however, keep a name.
+        del self._properties['path']
+        self._properties['name'] = source_tree
+
+  def Name(self):
+    if 'name' in self._properties:
+      return self._properties['name']
+    elif 'path' in self._properties:
+      return self._properties['path']
+    else:
+      # This happens in the case of the root PBXGroup.
+      return None
+
+  def Hashables(self):
+    """Custom hashables for XCHierarchicalElements.
+
+    XCHierarchicalElements are special.  Generally, their hashes shouldn't
+    change if the paths don't change.  The normal XCObject implementation of
+    Hashables adds a hashable for each object, which means that if
+    the hierarchical structure changes (possibly due to changes caused when
+    TakeOverOnlyChild runs and encounters slight changes in the hierarchy),
+    the hashes will change.  For example, if a project file initially contains
+    a/b/f1 and a/b becomes collapsed into a/b, f1 will have a single parent
+    a/b.  If someone later adds a/f2 to the project file, a/b can no longer be
+    collapsed, and f1 winds up with parent b and grandparent a.  That would
+    be sufficient to change f1's hash.
+
+    To counteract this problem, hashables for all XCHierarchicalElements except
+    for the main group (which has neither a name nor a path) are taken to be
+    just the set of path components.  Because hashables are inherited from
+    parents, this provides assurance that a/b/f1 has the same set of hashables
+    whether its parent is b or a/b.
+
+    The main group is a special case.  As it is permitted to have no name or
+    path, it is permitted to use the standard XCObject hash mechanism.  This
+    is not considered a problem because there can be only one main group.
+    """
+
+    if self == self.PBXProjectAncestor()._properties['mainGroup']:
+      # super
+      return XCObject.Hashables(self)
+
+    hashables = []
+
+    # Put the name in first, ensuring that if TakeOverOnlyChild collapses
+    # children into a top-level group like "Source", the name always goes
+    # into the list of hashables without interfering with path components.
+    if 'name' in self._properties:
+      # Make it less likely for people to manipulate hashes by following the
+      # pattern of always pushing an object type value onto the list first.
+      hashables.append(self.__class__.__name__ + '.name')
+      hashables.append(self._properties['name'])
+
+    # NOTE: This still has the problem that if an absolute path is encountered,
+    # including paths with a sourceTree, they'll still inherit their parents'
+    # hashables, even though the paths aren't relative to their parents.  This
+    # is not expected to be much of a problem in practice.
+    path = self.PathFromSourceTreeAndPath()
+    if path != None:
+      components = path.split(posixpath.sep)
+      for component in components:
+        hashables.append(self.__class__.__name__ + '.path')
+        hashables.append(component)
+
+    hashables.extend(self._hashables)
+
+    return hashables
+
+  def Compare(self, other):
+    # Allow comparison of these types.  PBXGroup has the highest sort rank;
+    # PBXVariantGroup is treated as equal to PBXFileReference.
+    valid_class_types = {
+      PBXFileReference: 'file',
+      PBXGroup:         'group',
+      PBXVariantGroup:  'file',
+    }
+    self_type = valid_class_types[self.__class__]
+    other_type = valid_class_types[other.__class__]
+
+    if self_type == other_type:
+      # If the two objects are of the same sort rank, compare their names.
+      return cmp(self.Name(), other.Name())
+
+    # Otherwise, sort groups before everything else.
+    if self_type == 'group':
+      return -1
+    return 1
+
+  def CompareRootGroup(self, other):
+    # This function should be used only to compare direct children of the
+    # containing PBXProject's mainGroup.  These groups should appear in the
+    # listed order.
+    # TODO(mark): "Build" is used by gyp.generator.xcode, perhaps the
+    # generator should have a way of influencing this list rather than having
+    # to hardcode for the generator here.
+    order = ['Source', 'Intermediates', 'Projects', 'Frameworks', 'Products',
+             'Build']
+
+    # If the groups aren't in the listed order, do a name comparison.
+    # Otherwise, groups in the listed order should come before those that
+    # aren't.
+    self_name = self.Name()
+    other_name = other.Name()
+    self_in = isinstance(self, PBXGroup) and self_name in order
+    other_in = isinstance(self, PBXGroup) and other_name in order
+    if not self_in and not other_in:
+      return self.Compare(other)
+    if self_name in order and not other_name in order:
+      return -1
+    if other_name in order and not self_name in order:
+      return 1
+
+    # If both groups are in the listed order, go by the defined order.
+    self_index = order.index(self_name)
+    other_index = order.index(other_name)
+    if self_index < other_index:
+      return -1
+    if self_index > other_index:
+      return 1
+    return 0
+
+  def PathFromSourceTreeAndPath(self):
+    # Turn the object's sourceTree and path properties into a single flat
+    # string of a form comparable to the path parameter.  If there's a
+    # sourceTree property other than "<group>", wrap it in $(...) for the
+    # comparison.
+    components = []
+    if self._properties['sourceTree'] != '<group>':
+      components.append('$(' + self._properties['sourceTree'] + ')')
+    if 'path' in self._properties:
+      components.append(self._properties['path'])
+
+    if len(components) > 0:
+      return posixpath.join(*components)
+
+    return None
+
+  def FullPath(self):
+    # Returns a full path to self relative to the project file, or relative
+    # to some other source tree.  Start with self, and walk up the chain of
+    # parents prepending their paths, if any, until no more parents are
+    # available (project-relative path) or until a path relative to some
+    # source tree is found.
+    xche = self
+    path = None
+    while isinstance(xche, XCHierarchicalElement) and \
+          (path is None or \
+           (not path.startswith('/') and not path.startswith('$'))):
+      this_path = xche.PathFromSourceTreeAndPath()
+      if this_path != None and path != None:
+        path = posixpath.join(this_path, path)
+      elif this_path != None:
+        path = this_path
+      xche = xche.parent
+
+    return path
+
+
+class PBXGroup(XCHierarchicalElement):
+  """
+  Attributes:
+    _children_by_path: Maps pathnames of children of this PBXGroup to the
+      actual child XCHierarchicalElement objects.
+    _variant_children_by_name_and_path: Maps (name, path) tuples of
+      PBXVariantGroup children to the actual child PBXVariantGroup objects.
+  """
+
+  _schema = XCHierarchicalElement._schema.copy()
+  _schema.update({
+    'children': [1, XCHierarchicalElement, 1, 1, []],
+    'name':     [0, str,                   0, 0],
+    'path':     [0, str,                   0, 0],
+  })
+
+  def __init__(self, properties=None, id=None, parent=None):
+    # super
+    XCHierarchicalElement.__init__(self, properties, id, parent)
+    self._children_by_path = {}
+    self._variant_children_by_name_and_path = {}
+    for child in self._properties.get('children', []):
+      self._AddChildToDicts(child)
+
+  def Hashables(self):
+    # super
+    hashables = XCHierarchicalElement.Hashables(self)
+
+    # It is not sufficient to just rely on name and parent to build a unique
+    # hashable : a node could have two child PBXGroup sharing a common name.
+    # To add entropy the hashable is enhanced with the names of all its
+    # children.
+    for child in self._properties.get('children', []):
+      child_name = child.Name()
+      if child_name != None:
+        hashables.append(child_name)
+
+    return hashables
+
+  def HashablesForChild(self):
+    # To avoid a circular reference the hashables used to compute a child id do
+    # not include the child names.
+    return XCHierarchicalElement.Hashables(self)
+
+  def _AddChildToDicts(self, child):
+    # Sets up this PBXGroup object's dicts to reference the child properly.
+    child_path = child.PathFromSourceTreeAndPath()
+    if child_path:
+      if child_path in self._children_by_path:
+        raise ValueError, 'Found multiple children with path ' + child_path
+      self._children_by_path[child_path] = child
+
+    if isinstance(child, PBXVariantGroup):
+      child_name = child._properties.get('name', None)
+      key = (child_name, child_path)
+      if key in self._variant_children_by_name_and_path:
+        raise ValueError, 'Found multiple PBXVariantGroup children with ' + \
+                          'name ' + str(child_name) + ' and path ' + \
+                          str(child_path)
+      self._variant_children_by_name_and_path[key] = child
+
+  def AppendChild(self, child):
+    # Callers should use this instead of calling
+    # AppendProperty('children', child) directly because this function
+    # maintains the group's dicts.
+    self.AppendProperty('children', child)
+    self._AddChildToDicts(child)
+
+  def GetChildByName(self, name):
+    # This is not currently optimized with a dict as GetChildByPath is because
+    # it has few callers.  Most callers probably want GetChildByPath.  This
+    # function is only useful to get children that have names but no paths,
+    # which is rare.  The children of the main group ("Source", "Products",
+    # etc.) is pretty much the only case where this likely to come up.
+    #
+    # TODO(mark): Maybe this should raise an error if more than one child is
+    # present with the same name.
+    if not 'children' in self._properties:
+      return None
+
+    for child in self._properties['children']:
+      if child.Name() == name:
+        return child
+
+    return None
+
+  def GetChildByPath(self, path):
+    if not path:
+      return None
+
+    if path in self._children_by_path:
+      return self._children_by_path[path]
+
+    return None
+
+  def GetChildByRemoteObject(self, remote_object):
+    # This method is a little bit esoteric.  Given a remote_object, which
+    # should be a PBXFileReference in another project file, this method will
+    # return this group's PBXReferenceProxy object serving as a local proxy
+    # for the remote PBXFileReference.
+    #
+    # This function might benefit from a dict optimization as GetChildByPath
+    # for some workloads, but profiling shows that it's not currently a
+    # problem.
+    if not 'children' in self._properties:
+      return None
+
+    for child in self._properties['children']:
+      if not isinstance(child, PBXReferenceProxy):
+        continue
+
+      container_proxy = child._properties['remoteRef']
+      if container_proxy._properties['remoteGlobalIDString'] == remote_object:
+        return child
+
+    return None
+
+  def AddOrGetFileByPath(self, path, hierarchical):
+    """Returns an existing or new file reference corresponding to path.
+
+    If hierarchical is True, this method will create or use the necessary
+    hierarchical group structure corresponding to path.  Otherwise, it will
+    look in and create an item in the current group only.
+
+    If an existing matching reference is found, it is returned, otherwise, a
+    new one will be created, added to the correct group, and returned.
+
+    If path identifies a directory by virtue of carrying a trailing slash,
+    this method returns a PBXFileReference of "folder" type.  If path
+    identifies a variant, by virtue of it identifying a file inside a directory
+    with an ".lproj" extension, this method returns a PBXVariantGroup
+    containing the variant named by path, and possibly other variants.  For
+    all other paths, a "normal" PBXFileReference will be returned.
+    """
+
+    # Adding or getting a directory?  Directories end with a trailing slash.
+    is_dir = False
+    if path.endswith('/'):
+      is_dir = True
+    path = posixpath.normpath(path)
+    if is_dir:
+      path = path + '/'
+
+    # Adding or getting a variant?  Variants are files inside directories
+    # with an ".lproj" extension.  Xcode uses variants for localization.  For
+    # a variant path/to/Language.lproj/MainMenu.nib, put a variant group named
+    # MainMenu.nib inside path/to, and give it a variant named Language.  In
+    # this example, grandparent would be set to path/to and parent_root would
+    # be set to Language.
+    variant_name = None
+    parent = posixpath.dirname(path)
+    grandparent = posixpath.dirname(parent)
+    parent_basename = posixpath.basename(parent)
+    (parent_root, parent_ext) = posixpath.splitext(parent_basename)
+    if parent_ext == '.lproj':
+      variant_name = parent_root
+    if grandparent == '':
+      grandparent = None
+
+    # Putting a directory inside a variant group is not currently supported.
+    assert not is_dir or variant_name is None
+
+    path_split = path.split(posixpath.sep)
+    if len(path_split) == 1 or \
+       ((is_dir or variant_name != None) and len(path_split) == 2) or \
+       not hierarchical:
+      # The PBXFileReference or PBXVariantGroup will be added to or gotten from
+      # this PBXGroup, no recursion necessary.
+      if variant_name is None:
+        # Add or get a PBXFileReference.
+        file_ref = self.GetChildByPath(path)
+        if file_ref != None:
+          assert file_ref.__class__ == PBXFileReference
+        else:
+          file_ref = PBXFileReference({'path': path})
+          self.AppendChild(file_ref)
+      else:
+        # Add or get a PBXVariantGroup.  The variant group name is the same
+        # as the basename (MainMenu.nib in the example above).  grandparent
+        # specifies the path to the variant group itself, and path_split[-2:]
+        # is the path of the specific variant relative to its group.
+        variant_group_name = posixpath.basename(path)
+        variant_group_ref = self.AddOrGetVariantGroupByNameAndPath(
+            variant_group_name, grandparent)
+        variant_path = posixpath.sep.join(path_split[-2:])
+        variant_ref = variant_group_ref.GetChildByPath(variant_path)
+        if variant_ref != None:
+          assert variant_ref.__class__ == PBXFileReference
+        else:
+          variant_ref = PBXFileReference({'name': variant_name,
+                                          'path': variant_path})
+          variant_group_ref.AppendChild(variant_ref)
+        # The caller is interested in the variant group, not the specific
+        # variant file.
+        file_ref = variant_group_ref
+      return file_ref
+    else:
+      # Hierarchical recursion.  Add or get a PBXGroup corresponding to the
+      # outermost path component, and then recurse into it, chopping off that
+      # path component.
+      next_dir = path_split[0]
+      group_ref = self.GetChildByPath(next_dir)
+      if group_ref != None:
+        assert group_ref.__class__ == PBXGroup
+      else:
+        group_ref = PBXGroup({'path': next_dir})
+        self.AppendChild(group_ref)
+      return group_ref.AddOrGetFileByPath(posixpath.sep.join(path_split[1:]),
+                                          hierarchical)
+
+  def AddOrGetVariantGroupByNameAndPath(self, name, path):
+    """Returns an existing or new PBXVariantGroup for name and path.
+
+    If a PBXVariantGroup identified by the name and path arguments is already
+    present as a child of this object, it is returned.  Otherwise, a new
+    PBXVariantGroup with the correct properties is created, added as a child,
+    and returned.
+
+    This method will generally be called by AddOrGetFileByPath, which knows
+    when to create a variant group based on the structure of the pathnames
+    passed to it.
+    """
+
+    key = (name, path)
+    if key in self._variant_children_by_name_and_path:
+      variant_group_ref = self._variant_children_by_name_and_path[key]
+      assert variant_group_ref.__class__ == PBXVariantGroup
+      return variant_group_ref
+
+    variant_group_properties = {'name': name}
+    if path != None:
+      variant_group_properties['path'] = path
+    variant_group_ref = PBXVariantGroup(variant_group_properties)
+    self.AppendChild(variant_group_ref)
+
+    return variant_group_ref
+
+  def TakeOverOnlyChild(self, recurse=False):
+    """If this PBXGroup has only one child and it's also a PBXGroup, take
+    it over by making all of its children this object's children.
+
+    This function will continue to take over only children when those children
+    are groups.  If there are three PBXGroups representing a, b, and c, with
+    c inside b and b inside a, and a and b have no other children, this will
+    result in a taking over both b and c, forming a PBXGroup for a/b/c.
+
+    If recurse is True, this function will recurse into children and ask them
+    to collapse themselves by taking over only children as well.  Assuming
+    an example hierarchy with files at a/b/c/d1, a/b/c/d2, and a/b/c/d3/e/f
+    (d1, d2, and f are files, the rest are groups), recursion will result in
+    a group for a/b/c containing a group for d3/e.
+    """
+
+    # At this stage, check that child class types are PBXGroup exactly,
+    # instead of using isinstance.  The only subclass of PBXGroup,
+    # PBXVariantGroup, should not participate in reparenting in the same way:
+    # reparenting by merging different object types would be wrong.
+    while len(self._properties['children']) == 1 and \
+          self._properties['children'][0].__class__ == PBXGroup:
+      # Loop to take over the innermost only-child group possible.
+
+      child = self._properties['children'][0]
+
+      # Assume the child's properties, including its children.  Save a copy
+      # of this object's old properties, because they'll still be needed.
+      # This object retains its existing id and parent attributes.
+      old_properties = self._properties
+      self._properties = child._properties
+      self._children_by_path = child._children_by_path
+
+      if not 'sourceTree' in self._properties or \
+         self._properties['sourceTree'] == '<group>':
+        # The child was relative to its parent.  Fix up the path.  Note that
+        # children with a sourceTree other than "<group>" are not relative to
+        # their parents, so no path fix-up is needed in that case.
+        if 'path' in old_properties:
+          if 'path' in self._properties:
+            # Both the original parent and child have paths set.
+            self._properties['path'] = posixpath.join(old_properties['path'],
+                                                      self._properties['path'])
+          else:
+            # Only the original parent has a path, use it.
+            self._properties['path'] = old_properties['path']
+        if 'sourceTree' in old_properties:
+          # The original parent had a sourceTree set, use it.
+          self._properties['sourceTree'] = old_properties['sourceTree']
+
+      # If the original parent had a name set, keep using it.  If the original
+      # parent didn't have a name but the child did, let the child's name
+      # live on.  If the name attribute seems unnecessary now, get rid of it.
+      if 'name' in old_properties and old_properties['name'] != None and \
+         old_properties['name'] != self.Name():
+        self._properties['name'] = old_properties['name']
+      if 'name' in self._properties and 'path' in self._properties and \
+         self._properties['name'] == self._properties['path']:
+        del self._properties['name']
+
+      # Notify all children of their new parent.
+      for child in self._properties['children']:
+        child.parent = self
+
+    # If asked to recurse, recurse.
+    if recurse:
+      for child in self._properties['children']:
+        if child.__class__ == PBXGroup:
+          child.TakeOverOnlyChild(recurse)
+
+  def SortGroup(self):
+    self._properties['children'] = \
+        sorted(self._properties['children'], cmp=lambda x,y: x.Compare(y))
+
+    # Recurse.
+    for child in self._properties['children']:
+      if isinstance(child, PBXGroup):
+        child.SortGroup()
+
+
+class XCFileLikeElement(XCHierarchicalElement):
+  # Abstract base for objects that can be used as the fileRef property of
+  # PBXBuildFile.
+
+  def PathHashables(self):
+    # A PBXBuildFile that refers to this object will call this method to
+    # obtain additional hashables specific to this XCFileLikeElement.  Don't
+    # just use this object's hashables, they're not specific and unique enough
+    # on their own (without access to the parent hashables.)  Instead, provide
+    # hashables that identify this object by path by getting its hashables as
+    # well as the hashables of ancestor XCHierarchicalElement objects.
+
+    hashables = []
+    xche = self
+    while xche != None and isinstance(xche, XCHierarchicalElement):
+      xche_hashables = xche.Hashables()
+      for index in xrange(0, len(xche_hashables)):
+        hashables.insert(index, xche_hashables[index])
+      xche = xche.parent
+    return hashables
+
+
+class XCContainerPortal(XCObject):
+  # Abstract base for objects that can be used as the containerPortal property
+  # of PBXContainerItemProxy.
+  pass
+
+
+class XCRemoteObject(XCObject):
+  # Abstract base for objects that can be used as the remoteGlobalIDString
+  # property of PBXContainerItemProxy.
+  pass
+
+
+class PBXFileReference(XCFileLikeElement, XCContainerPortal, XCRemoteObject):
+  _schema = XCFileLikeElement._schema.copy()
+  _schema.update({
+    'explicitFileType':  [0, str, 0, 0],
+    'lastKnownFileType': [0, str, 0, 0],
+    'name':              [0, str, 0, 0],
+    'path':              [0, str, 0, 1],
+  })
+
+  # Weird output rules for PBXFileReference.
+  _should_print_single_line = True
+  # super
+  _encode_transforms = XCFileLikeElement._alternate_encode_transforms
+
+  def __init__(self, properties=None, id=None, parent=None):
+    # super
+    XCFileLikeElement.__init__(self, properties, id, parent)
+    if 'path' in self._properties and self._properties['path'].endswith('/'):
+      self._properties['path'] = self._properties['path'][:-1]
+      is_dir = True
+    else:
+      is_dir = False
+
+    if 'path' in self._properties and \
+        not 'lastKnownFileType' in self._properties and \
+        not 'explicitFileType' in self._properties:
+      # TODO(mark): This is the replacement for a replacement for a quick hack.
+      # It is no longer incredibly sucky, but this list needs to be extended.
+      extension_map = {
+        'a':           'archive.ar',
+        'app':         'wrapper.application',
+        'bdic':        'file',
+        'bundle':      'wrapper.cfbundle',
+        'c':           'sourcecode.c.c',
+        'cc':          'sourcecode.cpp.cpp',
+        'cpp':         'sourcecode.cpp.cpp',
+        'css':         'text.css',
+        'cxx':         'sourcecode.cpp.cpp',
+        'dart':        'sourcecode',
+        'dylib':       'compiled.mach-o.dylib',
+        'framework':   'wrapper.framework',
+        'gyp':         'sourcecode',
+        'gypi':        'sourcecode',
+        'h':           'sourcecode.c.h',
+        'hxx':         'sourcecode.cpp.h',
+        'icns':        'image.icns',
+        'java':        'sourcecode.java',
+        'js':          'sourcecode.javascript',
+        'm':           'sourcecode.c.objc',
+        'mm':          'sourcecode.cpp.objcpp',
+        'nib':         'wrapper.nib',
+        'o':           'compiled.mach-o.objfile',
+        'pdf':         'image.pdf',
+        'pl':          'text.script.perl',
+        'plist':       'text.plist.xml',
+        'pm':          'text.script.perl',
+        'png':         'image.png',
+        'py':          'text.script.python',
+        'r':           'sourcecode.rez',
+        'rez':         'sourcecode.rez',
+        's':           'sourcecode.asm',
+        'storyboard':  'file.storyboard',
+        'strings':     'text.plist.strings',
+        'ttf':         'file',
+        'xcassets':    'folder.assetcatalog',
+        'xcconfig':    'text.xcconfig',
+        'xcdatamodel': 'wrapper.xcdatamodel',
+        'xib':         'file.xib',
+        'y':           'sourcecode.yacc',
+      }
+
+      prop_map = {
+        'dart':        'explicitFileType',
+        'gyp':         'explicitFileType',
+        'gypi':        'explicitFileType',
+      }
+
+      if is_dir:
+        file_type = 'folder'
+        prop_name = 'lastKnownFileType'
+      else:
+        basename = posixpath.basename(self._properties['path'])
+        (root, ext) = posixpath.splitext(basename)
+        # Check the map using a lowercase extension.
+        # TODO(mark): Maybe it should try with the original case first and fall
+        # back to lowercase, in case there are any instances where case
+        # matters.  There currently aren't.
+        if ext != '':
+          ext = ext[1:].lower()
+
+        # TODO(mark): "text" is the default value, but "file" is appropriate
+        # for unrecognized files not containing text.  Xcode seems to choose
+        # based on content.
+        file_type = extension_map.get(ext, 'text')
+        prop_name = prop_map.get(ext, 'lastKnownFileType')
+
+      self._properties[prop_name] = file_type
+
+
+class PBXVariantGroup(PBXGroup, XCFileLikeElement):
+  """PBXVariantGroup is used by Xcode to represent localizations."""
+  # No additions to the schema relative to PBXGroup.
+  pass
+
+
+# PBXReferenceProxy is also an XCFileLikeElement subclass.  It is defined below
+# because it uses PBXContainerItemProxy, defined below.
+
+
+class XCBuildConfiguration(XCObject):
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'baseConfigurationReference': [0, PBXFileReference, 0, 0],
+    'buildSettings':              [0, dict, 0, 1, {}],
+    'name':                       [0, str,  0, 1],
+  })
+
+  def HasBuildSetting(self, key):
+    return key in self._properties['buildSettings']
+
+  def GetBuildSetting(self, key):
+    return self._properties['buildSettings'][key]
+
+  def SetBuildSetting(self, key, value):
+    # TODO(mark): If a list, copy?
+    self._properties['buildSettings'][key] = value
+
+  def AppendBuildSetting(self, key, value):
+    if not key in self._properties['buildSettings']:
+      self._properties['buildSettings'][key] = []
+    self._properties['buildSettings'][key].append(value)
+
+  def DelBuildSetting(self, key):
+    if key in self._properties['buildSettings']:
+      del self._properties['buildSettings'][key]
+
+  def SetBaseConfiguration(self, value):
+    self._properties['baseConfigurationReference'] = value
+
+class XCConfigurationList(XCObject):
+  # _configs is the default list of configurations.
+  _configs = [ XCBuildConfiguration({'name': 'Debug'}),
+               XCBuildConfiguration({'name': 'Release'}) ]
+
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'buildConfigurations':           [1, XCBuildConfiguration, 1, 1, _configs],
+    'defaultConfigurationIsVisible': [0, int,                  0, 1, 1],
+    'defaultConfigurationName':      [0, str,                  0, 1, 'Release'],
+  })
+
+  def Name(self):
+    return 'Build configuration list for ' + \
+           self.parent.__class__.__name__ + ' "' + self.parent.Name() + '"'
+
+  def ConfigurationNamed(self, name):
+    """Convenience accessor to obtain an XCBuildConfiguration by name."""
+    for configuration in self._properties['buildConfigurations']:
+      if configuration._properties['name'] == name:
+        return configuration
+
+    raise KeyError, name
+
+  def DefaultConfiguration(self):
+    """Convenience accessor to obtain the default XCBuildConfiguration."""
+    return self.ConfigurationNamed(self._properties['defaultConfigurationName'])
+
+  def HasBuildSetting(self, key):
+    """Determines the state of a build setting in all XCBuildConfiguration
+    child objects.
+
+    If all child objects have key in their build settings, and the value is the
+    same in all child objects, returns 1.
+
+    If no child objects have the key in their build settings, returns 0.
+
+    If some, but not all, child objects have the key in their build settings,
+    or if any children have different values for the key, returns -1.
+    """
+
+    has = None
+    value = None
+    for configuration in self._properties['buildConfigurations']:
+      configuration_has = configuration.HasBuildSetting(key)
+      if has is None:
+        has = configuration_has
+      elif has != configuration_has:
+        return -1
+
+      if configuration_has:
+        configuration_value = configuration.GetBuildSetting(key)
+        if value is None:
+          value = configuration_value
+        elif value != configuration_value:
+          return -1
+
+    if not has:
+      return 0
+
+    return 1
+
+  def GetBuildSetting(self, key):
+    """Gets the build setting for key.
+
+    All child XCConfiguration objects must have the same value set for the
+    setting, or a ValueError will be raised.
+    """
+
+    # TODO(mark): This is wrong for build settings that are lists.  The list
+    # contents should be compared (and a list copy returned?)
+
+    value = None
+    for configuration in self._properties['buildConfigurations']:
+      configuration_value = configuration.GetBuildSetting(key)
+      if value is None:
+        value = configuration_value
+      else:
+        if value != configuration_value:
+          raise ValueError, 'Variant values for ' + key
+
+    return value
+
+  def SetBuildSetting(self, key, value):
+    """Sets the build setting for key to value in all child
+    XCBuildConfiguration objects.
+    """
+
+    for configuration in self._properties['buildConfigurations']:
+      configuration.SetBuildSetting(key, value)
+
+  def AppendBuildSetting(self, key, value):
+    """Appends value to the build setting for key, which is treated as a list,
+    in all child XCBuildConfiguration objects.
+    """
+
+    for configuration in self._properties['buildConfigurations']:
+      configuration.AppendBuildSetting(key, value)
+
+  def DelBuildSetting(self, key):
+    """Deletes the build setting key from all child XCBuildConfiguration
+    objects.
+    """
+
+    for configuration in self._properties['buildConfigurations']:
+      configuration.DelBuildSetting(key)
+
+  def SetBaseConfiguration(self, value):
+    """Sets the build configuration in all child XCBuildConfiguration objects.
+    """
+
+    for configuration in self._properties['buildConfigurations']:
+      configuration.SetBaseConfiguration(value)
+
+
+class PBXBuildFile(XCObject):
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'fileRef':  [0, XCFileLikeElement, 0, 1],
+    'settings': [0, str,               0, 0],  # hack, it's a dict
+  })
+
+  # Weird output rules for PBXBuildFile.
+  _should_print_single_line = True
+  _encode_transforms = XCObject._alternate_encode_transforms
+
+  def Name(self):
+    # Example: "main.cc in Sources"
+    return self._properties['fileRef'].Name() + ' in ' + self.parent.Name()
+
+  def Hashables(self):
+    # super
+    hashables = XCObject.Hashables(self)
+
+    # It is not sufficient to just rely on Name() to get the
+    # XCFileLikeElement's name, because that is not a complete pathname.
+    # PathHashables returns hashables unique enough that no two
+    # PBXBuildFiles should wind up with the same set of hashables, unless
+    # someone adds the same file multiple times to the same target.  That
+    # would be considered invalid anyway.
+    hashables.extend(self._properties['fileRef'].PathHashables())
+
+    return hashables
+
+
+class XCBuildPhase(XCObject):
+  """Abstract base for build phase classes.  Not represented in a project
+  file.
+
+  Attributes:
+    _files_by_path: A dict mapping each path of a child in the files list by
+      path (keys) to the corresponding PBXBuildFile children (values).
+    _files_by_xcfilelikeelement: A dict mapping each XCFileLikeElement (keys)
+      to the corresponding PBXBuildFile children (values).
+  """
+
+  # TODO(mark): Some build phase types, like PBXShellScriptBuildPhase, don't
+  # actually have a "files" list.  XCBuildPhase should not have "files" but
+  # another abstract subclass of it should provide this, and concrete build
+  # phase types that do have "files" lists should be derived from that new
+  # abstract subclass.  XCBuildPhase should only provide buildActionMask and
+  # runOnlyForDeploymentPostprocessing, and not files or the various
+  # file-related methods and attributes.
+
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'buildActionMask':                    [0, int,          0, 1, 0x7fffffff],
+    'files':                              [1, PBXBuildFile, 1, 1, []],
+    'runOnlyForDeploymentPostprocessing': [0, int,          0, 1, 0],
+  })
+
+  def __init__(self, properties=None, id=None, parent=None):
+    # super
+    XCObject.__init__(self, properties, id, parent)
+
+    self._files_by_path = {}
+    self._files_by_xcfilelikeelement = {}
+    for pbxbuildfile in self._properties.get('files', []):
+      self._AddBuildFileToDicts(pbxbuildfile)
+
+  def FileGroup(self, path):
+    # Subclasses must override this by returning a two-element tuple.  The
+    # first item in the tuple should be the PBXGroup to which "path" should be
+    # added, either as a child or deeper descendant.  The second item should
+    # be a boolean indicating whether files should be added into hierarchical
+    # groups or one single flat group.
+    raise NotImplementedError, \
+          self.__class__.__name__ + ' must implement FileGroup'
+
+  def _AddPathToDict(self, pbxbuildfile, path):
+    """Adds path to the dict tracking paths belonging to this build phase.
+
+    If the path is already a member of this build phase, raises an exception.
+    """
+
+    if path in self._files_by_path:
+      raise ValueError, 'Found multiple build files with path ' + path
+    self._files_by_path[path] = pbxbuildfile
+
+  def _AddBuildFileToDicts(self, pbxbuildfile, path=None):
+    """Maintains the _files_by_path and _files_by_xcfilelikeelement dicts.
+
+    If path is specified, then it is the path that is being added to the
+    phase, and pbxbuildfile must contain either a PBXFileReference directly
+    referencing that path, or it must contain a PBXVariantGroup that itself
+    contains a PBXFileReference referencing the path.
+
+    If path is not specified, either the PBXFileReference's path or the paths
+    of all children of the PBXVariantGroup are taken as being added to the
+    phase.
+
+    If the path is already present in the phase, raises an exception.
+
+    If the PBXFileReference or PBXVariantGroup referenced by pbxbuildfile
+    are already present in the phase, referenced by a different PBXBuildFile
+    object, raises an exception.  This does not raise an exception when
+    a PBXFileReference or PBXVariantGroup reappear and are referenced by the
+    same PBXBuildFile that has already introduced them, because in the case
+    of PBXVariantGroup objects, they may correspond to multiple paths that are
+    not all added simultaneously.  When this situation occurs, the path needs
+    to be added to _files_by_path, but nothing needs to change in
+    _files_by_xcfilelikeelement, and the caller should have avoided adding
+    the PBXBuildFile if it is already present in the list of children.
+    """
+
+    xcfilelikeelement = pbxbuildfile._properties['fileRef']
+
+    paths = []
+    if path != None:
+      # It's best when the caller provides the path.
+      if isinstance(xcfilelikeelement, PBXVariantGroup):
+        paths.append(path)
+    else:
+      # If the caller didn't provide a path, there can be either multiple
+      # paths (PBXVariantGroup) or one.
+      if isinstance(xcfilelikeelement, PBXVariantGroup):
+        for variant in xcfilelikeelement._properties['children']:
+          paths.append(variant.FullPath())
+      else:
+        paths.append(xcfilelikeelement.FullPath())
+
+    # Add the paths first, because if something's going to raise, the
+    # messages provided by _AddPathToDict are more useful owing to its
+    # having access to a real pathname and not just an object's Name().
+    for a_path in paths:
+      self._AddPathToDict(pbxbuildfile, a_path)
+
+    # If another PBXBuildFile references this XCFileLikeElement, there's a
+    # problem.
+    if xcfilelikeelement in self._files_by_xcfilelikeelement and \
+       self._files_by_xcfilelikeelement[xcfilelikeelement] != pbxbuildfile:
+      raise ValueError, 'Found multiple build files for ' + \
+                        xcfilelikeelement.Name()
+    self._files_by_xcfilelikeelement[xcfilelikeelement] = pbxbuildfile
+
+  def AppendBuildFile(self, pbxbuildfile, path=None):
+    # Callers should use this instead of calling
+    # AppendProperty('files', pbxbuildfile) directly because this function
+    # maintains the object's dicts.  Better yet, callers can just call AddFile
+    # with a pathname and not worry about building their own PBXBuildFile
+    # objects.
+    self.AppendProperty('files', pbxbuildfile)
+    self._AddBuildFileToDicts(pbxbuildfile, path)
+
+  def AddFile(self, path, settings=None):
+    (file_group, hierarchical) = self.FileGroup(path)
+    file_ref = file_group.AddOrGetFileByPath(path, hierarchical)
+
+    if file_ref in self._files_by_xcfilelikeelement and \
+       isinstance(file_ref, PBXVariantGroup):
+      # There's already a PBXBuildFile in this phase corresponding to the
+      # PBXVariantGroup.  path just provides a new variant that belongs to
+      # the group.  Add the path to the dict.
+      pbxbuildfile = self._files_by_xcfilelikeelement[file_ref]
+      self._AddBuildFileToDicts(pbxbuildfile, path)
+    else:
+      # Add a new PBXBuildFile to get file_ref into the phase.
+      if settings is None:
+        pbxbuildfile = PBXBuildFile({'fileRef': file_ref})
+      else:
+        pbxbuildfile = PBXBuildFile({'fileRef': file_ref, 'settings': settings})
+      self.AppendBuildFile(pbxbuildfile, path)
+
+
+class PBXHeadersBuildPhase(XCBuildPhase):
+  # No additions to the schema relative to XCBuildPhase.
+
+  def Name(self):
+    return 'Headers'
+
+  def FileGroup(self, path):
+    return self.PBXProjectAncestor().RootGroupForPath(path)
+
+
+class PBXResourcesBuildPhase(XCBuildPhase):
+  # No additions to the schema relative to XCBuildPhase.
+
+  def Name(self):
+    return 'Resources'
+
+  def FileGroup(self, path):
+    return self.PBXProjectAncestor().RootGroupForPath(path)
+
+
+class PBXSourcesBuildPhase(XCBuildPhase):
+  # No additions to the schema relative to XCBuildPhase.
+
+  def Name(self):
+    return 'Sources'
+
+  def FileGroup(self, path):
+    return self.PBXProjectAncestor().RootGroupForPath(path)
+
+
+class PBXFrameworksBuildPhase(XCBuildPhase):
+  # No additions to the schema relative to XCBuildPhase.
+
+  def Name(self):
+    return 'Frameworks'
+
+  def FileGroup(self, path):
+    (root, ext) = posixpath.splitext(path)
+    if ext != '':
+      ext = ext[1:].lower()
+    if ext == 'o':
+      # .o files are added to Xcode Frameworks phases, but conceptually aren't
+      # frameworks, they're more like sources or intermediates. Redirect them
+      # to show up in one of those other groups.
+      return self.PBXProjectAncestor().RootGroupForPath(path)
+    else:
+      return (self.PBXProjectAncestor().FrameworksGroup(), False)
+
+
+class PBXShellScriptBuildPhase(XCBuildPhase):
+  _schema = XCBuildPhase._schema.copy()
+  _schema.update({
+    'inputPaths':       [1, str, 0, 1, []],
+    'name':             [0, str, 0, 0],
+    'outputPaths':      [1, str, 0, 1, []],
+    'shellPath':        [0, str, 0, 1, '/bin/sh'],
+    'shellScript':      [0, str, 0, 1],
+    'showEnvVarsInLog': [0, int, 0, 0],
+  })
+
+  def Name(self):
+    if 'name' in self._properties:
+      return self._properties['name']
+
+    return 'ShellScript'
+
+
+class PBXCopyFilesBuildPhase(XCBuildPhase):
+  _schema = XCBuildPhase._schema.copy()
+  _schema.update({
+    'dstPath':          [0, str, 0, 1],
+    'dstSubfolderSpec': [0, int, 0, 1],
+    'name':             [0, str, 0, 0],
+  })
+
+  # path_tree_re matches "$(DIR)/path" or just "$(DIR)".  Match group 1 is
+  # "DIR", match group 3 is "path" or None.
+  path_tree_re = re.compile('^\\$\\((.*)\\)(/(.*)|)$')
+
+  # path_tree_to_subfolder maps names of Xcode variables to the associated
+  # dstSubfolderSpec property value used in a PBXCopyFilesBuildPhase object.
+  path_tree_to_subfolder = {
+    'BUILT_PRODUCTS_DIR': 16,  # Products Directory
+    # Other types that can be chosen via the Xcode UI.
+    # TODO(mark): Map Xcode variable names to these.
+    # : 1,  # Wrapper
+    # : 6,  # Executables: 6
+    # : 7,  # Resources
+    # : 15,  # Java Resources
+    # : 10,  # Frameworks
+    # : 11,  # Shared Frameworks
+    # : 12,  # Shared Support
+    # : 13,  # PlugIns
+  }
+
+  def Name(self):
+    if 'name' in self._properties:
+      return self._properties['name']
+
+    return 'CopyFiles'
+
+  def FileGroup(self, path):
+    return self.PBXProjectAncestor().RootGroupForPath(path)
+
+  def SetDestination(self, path):
+    """Set the dstSubfolderSpec and dstPath properties from path.
+
+    path may be specified in the same notation used for XCHierarchicalElements,
+    specifically, "$(DIR)/path".
+    """
+
+    path_tree_match = self.path_tree_re.search(path)
+    if path_tree_match:
+      # Everything else needs to be relative to an Xcode variable.
+      path_tree = path_tree_match.group(1)
+      relative_path = path_tree_match.group(3)
+
+      if path_tree in self.path_tree_to_subfolder:
+        subfolder = self.path_tree_to_subfolder[path_tree]
+        if relative_path is None:
+          relative_path = ''
+      else:
+        # The path starts with an unrecognized Xcode variable
+        # name like $(SRCROOT).  Xcode will still handle this
+        # as an "absolute path" that starts with the variable.
+        subfolder = 0
+        relative_path = path
+    elif path.startswith('/'):
+      # Special case.  Absolute paths are in dstSubfolderSpec 0.
+      subfolder = 0
+      relative_path = path[1:]
+    else:
+      raise ValueError, 'Can\'t use path %s in a %s' % \
+                        (path, self.__class__.__name__)
+
+    self._properties['dstPath'] = relative_path
+    self._properties['dstSubfolderSpec'] = subfolder
+
+
+class PBXBuildRule(XCObject):
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'compilerSpec': [0, str, 0, 1],
+    'filePatterns': [0, str, 0, 0],
+    'fileType':     [0, str, 0, 1],
+    'isEditable':   [0, int, 0, 1, 1],
+    'outputFiles':  [1, str, 0, 1, []],
+    'script':       [0, str, 0, 0],
+  })
+
+  def Name(self):
+    # Not very inspired, but it's what Xcode uses.
+    return self.__class__.__name__
+
+  def Hashables(self):
+    # super
+    hashables = XCObject.Hashables(self)
+
+    # Use the hashables of the weak objects that this object refers to.
+    hashables.append(self._properties['fileType'])
+    if 'filePatterns' in self._properties:
+      hashables.append(self._properties['filePatterns'])
+    return hashables
+
+
+class PBXContainerItemProxy(XCObject):
+  # When referencing an item in this project file, containerPortal is the
+  # PBXProject root object of this project file.  When referencing an item in
+  # another project file, containerPortal is a PBXFileReference identifying
+  # the other project file.
+  #
+  # When serving as a proxy to an XCTarget (in this project file or another),
+  # proxyType is 1.  When serving as a proxy to a PBXFileReference (in another
+  # project file), proxyType is 2.  Type 2 is used for references to the
+  # producs of the other project file's targets.
+  #
+  # Xcode is weird about remoteGlobalIDString.  Usually, it's printed without
+  # a comment, indicating that it's tracked internally simply as a string, but
+  # sometimes it's printed with a comment (usually when the object is initially
+  # created), indicating that it's tracked as a project file object at least
+  # sometimes.  This module always tracks it as an object, but contains a hack
+  # to prevent it from printing the comment in the project file output.  See
+  # _XCKVPrint.
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'containerPortal':      [0, XCContainerPortal, 0, 1],
+    'proxyType':            [0, int,               0, 1],
+    'remoteGlobalIDString': [0, XCRemoteObject,    0, 1],
+    'remoteInfo':           [0, str,               0, 1],
+  })
+
+  def __repr__(self):
+    props = self._properties
+    name = '%s.gyp:%s' % (props['containerPortal'].Name(), props['remoteInfo'])
+    return '<%s %r at 0x%x>' % (self.__class__.__name__, name, id(self))
+
+  def Name(self):
+    # Admittedly not the best name, but it's what Xcode uses.
+    return self.__class__.__name__
+
+  def Hashables(self):
+    # super
+    hashables = XCObject.Hashables(self)
+
+    # Use the hashables of the weak objects that this object refers to.
+    hashables.extend(self._properties['containerPortal'].Hashables())
+    hashables.extend(self._properties['remoteGlobalIDString'].Hashables())
+    return hashables
+
+
+class PBXTargetDependency(XCObject):
+  # The "target" property accepts an XCTarget object, and obviously not
+  # NoneType.  But XCTarget is defined below, so it can't be put into the
+  # schema yet.  The definition of PBXTargetDependency can't be moved below
+  # XCTarget because XCTarget's own schema references PBXTargetDependency.
+  # Python doesn't deal well with this circular relationship, and doesn't have
+  # a real way to do forward declarations.  To work around, the type of
+  # the "target" property is reset below, after XCTarget is defined.
+  #
+  # At least one of "name" and "target" is required.
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'name':        [0, str,                   0, 0],
+    'target':      [0, None.__class__,        0, 0],
+    'targetProxy': [0, PBXContainerItemProxy, 1, 1],
+  })
+
+  def __repr__(self):
+    name = self._properties.get('name') or self._properties['target'].Name()
+    return '<%s %r at 0x%x>' % (self.__class__.__name__, name, id(self))
+
+  def Name(self):
+    # Admittedly not the best name, but it's what Xcode uses.
+    return self.__class__.__name__
+
+  def Hashables(self):
+    # super
+    hashables = XCObject.Hashables(self)
+
+    # Use the hashables of the weak objects that this object refers to.
+    hashables.extend(self._properties['targetProxy'].Hashables())
+    return hashables
+
+
+class PBXReferenceProxy(XCFileLikeElement):
+  _schema = XCFileLikeElement._schema.copy()
+  _schema.update({
+    'fileType':  [0, str,                   0, 1],
+    'path':      [0, str,                   0, 1],
+    'remoteRef': [0, PBXContainerItemProxy, 1, 1],
+  })
+
+
+class XCTarget(XCRemoteObject):
+  # An XCTarget is really just an XCObject, the XCRemoteObject thing is just
+  # to allow PBXProject to be used in the remoteGlobalIDString property of
+  # PBXContainerItemProxy.
+  #
+  # Setting a "name" property at instantiation may also affect "productName",
+  # which may in turn affect the "PRODUCT_NAME" build setting in children of
+  # "buildConfigurationList".  See __init__ below.
+  _schema = XCRemoteObject._schema.copy()
+  _schema.update({
+    'buildConfigurationList': [0, XCConfigurationList, 1, 1,
+                               XCConfigurationList()],
+    'buildPhases':            [1, XCBuildPhase,        1, 1, []],
+    'dependencies':           [1, PBXTargetDependency, 1, 1, []],
+    'name':                   [0, str,                 0, 1],
+    'productName':            [0, str,                 0, 1],
+  })
+
+  def __init__(self, properties=None, id=None, parent=None,
+               force_outdir=None, force_prefix=None, force_extension=None):
+    # super
+    XCRemoteObject.__init__(self, properties, id, parent)
+
+    # Set up additional defaults not expressed in the schema.  If a "name"
+    # property was supplied, set "productName" if it is not present.  Also set
+    # the "PRODUCT_NAME" build setting in each configuration, but only if
+    # the setting is not present in any build configuration.
+    if 'name' in self._properties:
+      if not 'productName' in self._properties:
+        self.SetProperty('productName', self._properties['name'])
+
+    if 'productName' in self._properties:
+      if 'buildConfigurationList' in self._properties:
+        configs = self._properties['buildConfigurationList']
+        if configs.HasBuildSetting('PRODUCT_NAME') == 0:
+          configs.SetBuildSetting('PRODUCT_NAME',
+                                  self._properties['productName'])
+
+  def AddDependency(self, other):
+    pbxproject = self.PBXProjectAncestor()
+    other_pbxproject = other.PBXProjectAncestor()
+    if pbxproject == other_pbxproject:
+      # Add a dependency to another target in the same project file.
+      container = PBXContainerItemProxy({'containerPortal':      pbxproject,
+                                         'proxyType':            1,
+                                         'remoteGlobalIDString': other,
+                                         'remoteInfo':           other.Name()})
+      dependency = PBXTargetDependency({'target':      other,
+                                        'targetProxy': container})
+      self.AppendProperty('dependencies', dependency)
+    else:
+      # Add a dependency to a target in a different project file.
+      other_project_ref = \
+          pbxproject.AddOrGetProjectReference(other_pbxproject)[1]
+      container = PBXContainerItemProxy({
+            'containerPortal':      other_project_ref,
+            'proxyType':            1,
+            'remoteGlobalIDString': other,
+            'remoteInfo':           other.Name(),
+          })
+      dependency = PBXTargetDependency({'name':        other.Name(),
+                                        'targetProxy': container})
+      self.AppendProperty('dependencies', dependency)
+
+  # Proxy all of these through to the build configuration list.
+
+  def ConfigurationNamed(self, name):
+    return self._properties['buildConfigurationList'].ConfigurationNamed(name)
+
+  def DefaultConfiguration(self):
+    return self._properties['buildConfigurationList'].DefaultConfiguration()
+
+  def HasBuildSetting(self, key):
+    return self._properties['buildConfigurationList'].HasBuildSetting(key)
+
+  def GetBuildSetting(self, key):
+    return self._properties['buildConfigurationList'].GetBuildSetting(key)
+
+  def SetBuildSetting(self, key, value):
+    return self._properties['buildConfigurationList'].SetBuildSetting(key, \
+                                                                      value)
+
+  def AppendBuildSetting(self, key, value):
+    return self._properties['buildConfigurationList'].AppendBuildSetting(key, \
+                                                                         value)
+
+  def DelBuildSetting(self, key):
+    return self._properties['buildConfigurationList'].DelBuildSetting(key)
+
+
+# Redefine the type of the "target" property.  See PBXTargetDependency._schema
+# above.
+PBXTargetDependency._schema['target'][1] = XCTarget
+
+
+class PBXNativeTarget(XCTarget):
+  # buildPhases is overridden in the schema to be able to set defaults.
+  #
+  # NOTE: Contrary to most objects, it is advisable to set parent when
+  # constructing PBXNativeTarget.  A parent of an XCTarget must be a PBXProject
+  # object.  A parent reference is required for a PBXNativeTarget during
+  # construction to be able to set up the target defaults for productReference,
+  # because a PBXBuildFile object must be created for the target and it must
+  # be added to the PBXProject's mainGroup hierarchy.
+  _schema = XCTarget._schema.copy()
+  _schema.update({
+    'buildPhases':      [1, XCBuildPhase,     1, 1,
+                         [PBXSourcesBuildPhase(), PBXFrameworksBuildPhase()]],
+    'buildRules':       [1, PBXBuildRule,     1, 1, []],
+    'productReference': [0, PBXFileReference, 0, 1],
+    'productType':      [0, str,              0, 1],
+  })
+
+  # Mapping from Xcode product-types to settings.  The settings are:
+  #  filetype : used for explicitFileType in the project file
+  #  prefix : the prefix for the file name
+  #  suffix : the suffix for the filen ame
+  _product_filetypes = {
+    'com.apple.product-type.application':       ['wrapper.application',
+                                                 '', '.app'],
+    'com.apple.product-type.bundle':            ['wrapper.cfbundle',
+                                                 '', '.bundle'],
+    'com.apple.product-type.framework':         ['wrapper.framework',
+                                                 '', '.framework'],
+    'com.apple.product-type.library.dynamic':   ['compiled.mach-o.dylib',
+                                                 'lib', '.dylib'],
+    'com.apple.product-type.library.static':    ['archive.ar',
+                                                 'lib', '.a'],
+    'com.apple.product-type.tool':              ['compiled.mach-o.executable',
+                                                 '', ''],
+    'com.apple.product-type.bundle.unit-test':  ['wrapper.cfbundle',
+                                                 '', '.xctest'],
+    'com.googlecode.gyp.xcode.bundle':          ['compiled.mach-o.dylib',
+                                                 '', '.so'],
+  }
+
+  def __init__(self, properties=None, id=None, parent=None,
+               force_outdir=None, force_prefix=None, force_extension=None):
+    # super
+    XCTarget.__init__(self, properties, id, parent)
+
+    if 'productName' in self._properties and \
+       'productType' in self._properties and \
+       not 'productReference' in self._properties and \
+       self._properties['productType'] in self._product_filetypes:
+      products_group = None
+      pbxproject = self.PBXProjectAncestor()
+      if pbxproject != None:
+        products_group = pbxproject.ProductsGroup()
+
+      if products_group != None:
+        (filetype, prefix, suffix) = \
+            self._product_filetypes[self._properties['productType']]
+        # Xcode does not have a distinct type for loadable modules that are
+        # pure BSD targets (not in a bundle wrapper). GYP allows such modules
+        # to be specified by setting a target type to loadable_module without
+        # having mac_bundle set. These are mapped to the pseudo-product type
+        # com.googlecode.gyp.xcode.bundle.
+        #
+        # By picking up this special type and converting it to a dynamic
+        # library (com.apple.product-type.library.dynamic) with fix-ups,
+        # single-file loadable modules can be produced.
+        #
+        # MACH_O_TYPE is changed to mh_bundle to produce the proper file type
+        # (as opposed to mh_dylib). In order for linking to succeed,
+        # DYLIB_CURRENT_VERSION and DYLIB_COMPATIBILITY_VERSION must be
+        # cleared. They are meaningless for type mh_bundle.
+        #
+        # Finally, the .so extension is forcibly applied over the default
+        # (.dylib), unless another forced extension is already selected.
+        # .dylib is plainly wrong, and .bundle is used by loadable_modules in
+        # bundle wrappers (com.apple.product-type.bundle). .so seems an odd
+        # choice because it's used as the extension on many other systems that
+        # don't distinguish between linkable shared libraries and non-linkable
+        # loadable modules, but there's precedent: Python loadable modules on
+        # Mac OS X use an .so extension.
+        if self._properties['productType'] == 'com.googlecode.gyp.xcode.bundle':
+          self._properties['productType'] = \
+              'com.apple.product-type.library.dynamic'
+          self.SetBuildSetting('MACH_O_TYPE', 'mh_bundle')
+          self.SetBuildSetting('DYLIB_CURRENT_VERSION', '')
+          self.SetBuildSetting('DYLIB_COMPATIBILITY_VERSION', '')
+          if force_extension is None:
+            force_extension = suffix[1:]
+
+        if self._properties['productType'] == \
+           'com.apple.product-type-bundle.unit.test':
+          if force_extension is None:
+            force_extension = suffix[1:]
+
+        if force_extension is not None:
+          # If it's a wrapper (bundle), set WRAPPER_EXTENSION.
+          if filetype.startswith('wrapper.'):
+            self.SetBuildSetting('WRAPPER_EXTENSION', force_extension)
+          else:
+            # Extension override.
+            suffix = '.' + force_extension
+            self.SetBuildSetting('EXECUTABLE_EXTENSION', force_extension)
+
+          if filetype.startswith('compiled.mach-o.executable'):
+            product_name = self._properties['productName']
+            product_name += suffix
+            suffix = ''
+            self.SetProperty('productName', product_name)
+            self.SetBuildSetting('PRODUCT_NAME', product_name)
+
+        # Xcode handles most prefixes based on the target type, however there
+        # are exceptions.  If a "BSD Dynamic Library" target is added in the
+        # Xcode UI, Xcode sets EXECUTABLE_PREFIX.  This check duplicates that
+        # behavior.
+        if force_prefix is not None:
+          prefix = force_prefix
+        if filetype.startswith('wrapper.'):
+          self.SetBuildSetting('WRAPPER_PREFIX', prefix)
+        else:
+          self.SetBuildSetting('EXECUTABLE_PREFIX', prefix)
+
+        if force_outdir is not None:
+          self.SetBuildSetting('TARGET_BUILD_DIR', force_outdir)
+
+        # TODO(tvl): Remove the below hack.
+        #    http://code.google.com/p/gyp/issues/detail?id=122
+
+        # Some targets include the prefix in the target_name.  These targets
+        # really should just add a product_name setting that doesn't include
+        # the prefix.  For example:
+        #  target_name = 'libevent', product_name = 'event'
+        # This check cleans up for them.
+        product_name = self._properties['productName']
+        prefix_len = len(prefix)
+        if prefix_len and (product_name[:prefix_len] == prefix):
+          product_name = product_name[prefix_len:]
+          self.SetProperty('productName', product_name)
+          self.SetBuildSetting('PRODUCT_NAME', product_name)
+
+        ref_props = {
+          'explicitFileType': filetype,
+          'includeInIndex':   0,
+          'path':             prefix + product_name + suffix,
+          'sourceTree':       'BUILT_PRODUCTS_DIR',
+        }
+        file_ref = PBXFileReference(ref_props)
+        products_group.AppendChild(file_ref)
+        self.SetProperty('productReference', file_ref)
+
+  def GetBuildPhaseByType(self, type):
+    if not 'buildPhases' in self._properties:
+      return None
+
+    the_phase = None
+    for phase in self._properties['buildPhases']:
+      if isinstance(phase, type):
+        # Some phases may be present in multiples in a well-formed project file,
+        # but phases like PBXSourcesBuildPhase may only be present singly, and
+        # this function is intended as an aid to GetBuildPhaseByType.  Loop
+        # over the entire list of phases and assert if more than one of the
+        # desired type is found.
+        assert the_phase is None
+        the_phase = phase
+
+    return the_phase
+
+  def HeadersPhase(self):
+    headers_phase = self.GetBuildPhaseByType(PBXHeadersBuildPhase)
+    if headers_phase is None:
+      headers_phase = PBXHeadersBuildPhase()
+
+      # The headers phase should come before the resources, sources, and
+      # frameworks phases, if any.
+      insert_at = len(self._properties['buildPhases'])
+      for index in xrange(0, len(self._properties['buildPhases'])):
+        phase = self._properties['buildPhases'][index]
+        if isinstance(phase, PBXResourcesBuildPhase) or \
+           isinstance(phase, PBXSourcesBuildPhase) or \
+           isinstance(phase, PBXFrameworksBuildPhase):
+          insert_at = index
+          break
+
+      self._properties['buildPhases'].insert(insert_at, headers_phase)
+      headers_phase.parent = self
+
+    return headers_phase
+
+  def ResourcesPhase(self):
+    resources_phase = self.GetBuildPhaseByType(PBXResourcesBuildPhase)
+    if resources_phase is None:
+      resources_phase = PBXResourcesBuildPhase()
+
+      # The resources phase should come before the sources and frameworks
+      # phases, if any.
+      insert_at = len(self._properties['buildPhases'])
+      for index in xrange(0, len(self._properties['buildPhases'])):
+        phase = self._properties['buildPhases'][index]
+        if isinstance(phase, PBXSourcesBuildPhase) or \
+           isinstance(phase, PBXFrameworksBuildPhase):
+          insert_at = index
+          break
+
+      self._properties['buildPhases'].insert(insert_at, resources_phase)
+      resources_phase.parent = self
+
+    return resources_phase
+
+  def SourcesPhase(self):
+    sources_phase = self.GetBuildPhaseByType(PBXSourcesBuildPhase)
+    if sources_phase is None:
+      sources_phase = PBXSourcesBuildPhase()
+      self.AppendProperty('buildPhases', sources_phase)
+
+    return sources_phase
+
+  def FrameworksPhase(self):
+    frameworks_phase = self.GetBuildPhaseByType(PBXFrameworksBuildPhase)
+    if frameworks_phase is None:
+      frameworks_phase = PBXFrameworksBuildPhase()
+      self.AppendProperty('buildPhases', frameworks_phase)
+
+    return frameworks_phase
+
+  def AddDependency(self, other):
+    # super
+    XCTarget.AddDependency(self, other)
+
+    static_library_type = 'com.apple.product-type.library.static'
+    shared_library_type = 'com.apple.product-type.library.dynamic'
+    framework_type = 'com.apple.product-type.framework'
+    if isinstance(other, PBXNativeTarget) and \
+       'productType' in self._properties and \
+       self._properties['productType'] != static_library_type and \
+       'productType' in other._properties and \
+       (other._properties['productType'] == static_library_type or \
+        ((other._properties['productType'] == shared_library_type or \
+          other._properties['productType'] == framework_type) and \
+         ((not other.HasBuildSetting('MACH_O_TYPE')) or
+          other.GetBuildSetting('MACH_O_TYPE') != 'mh_bundle'))):
+
+      file_ref = other.GetProperty('productReference')
+
+      pbxproject = self.PBXProjectAncestor()
+      other_pbxproject = other.PBXProjectAncestor()
+      if pbxproject != other_pbxproject:
+        other_project_product_group = \
+            pbxproject.AddOrGetProjectReference(other_pbxproject)[0]
+        file_ref = other_project_product_group.GetChildByRemoteObject(file_ref)
+
+      self.FrameworksPhase().AppendProperty('files',
+                                            PBXBuildFile({'fileRef': file_ref}))
+
+
+class PBXAggregateTarget(XCTarget):
+  pass
+
+
+class PBXProject(XCContainerPortal):
+  # A PBXProject is really just an XCObject, the XCContainerPortal thing is
+  # just to allow PBXProject to be used in the containerPortal property of
+  # PBXContainerItemProxy.
+  """
+
+  Attributes:
+    path: "sample.xcodeproj".  TODO(mark) Document me!
+    _other_pbxprojects: A dictionary, keyed by other PBXProject objects.  Each
+                        value is a reference to the dict in the
+                        projectReferences list associated with the keyed
+                        PBXProject.
+  """
+
+  _schema = XCContainerPortal._schema.copy()
+  _schema.update({
+    'attributes':             [0, dict,                0, 0],
+    'buildConfigurationList': [0, XCConfigurationList, 1, 1,
+                               XCConfigurationList()],
+    'compatibilityVersion':   [0, str,                 0, 1, 'Xcode 3.2'],
+    'hasScannedForEncodings': [0, int,                 0, 1, 1],
+    'mainGroup':              [0, PBXGroup,            1, 1, PBXGroup()],
+    'projectDirPath':         [0, str,                 0, 1, ''],
+    'projectReferences':      [1, dict,                0, 0],
+    'projectRoot':            [0, str,                 0, 1, ''],
+    'targets':                [1, XCTarget,            1, 1, []],
+  })
+
+  def __init__(self, properties=None, id=None, parent=None, path=None):
+    self.path = path
+    self._other_pbxprojects = {}
+    # super
+    return XCContainerPortal.__init__(self, properties, id, parent)
+
+  def Name(self):
+    name = self.path
+    if name[-10:] == '.xcodeproj':
+      name = name[:-10]
+    return posixpath.basename(name)
+
+  def Path(self):
+    return self.path
+
+  def Comment(self):
+    return 'Project object'
+
+  def Children(self):
+    # super
+    children = XCContainerPortal.Children(self)
+
+    # Add children that the schema doesn't know about.  Maybe there's a more
+    # elegant way around this, but this is the only case where we need to own
+    # objects in a dictionary (that is itself in a list), and three lines for
+    # a one-off isn't that big a deal.
+    if 'projectReferences' in self._properties:
+      for reference in self._properties['projectReferences']:
+        children.append(reference['ProductGroup'])
+
+    return children
+
+  def PBXProjectAncestor(self):
+    return self
+
+  def _GroupByName(self, name):
+    if not 'mainGroup' in self._properties:
+      self.SetProperty('mainGroup', PBXGroup())
+
+    main_group = self._properties['mainGroup']
+    group = main_group.GetChildByName(name)
+    if group is None:
+      group = PBXGroup({'name': name})
+      main_group.AppendChild(group)
+
+    return group
+
+  # SourceGroup and ProductsGroup are created by default in Xcode's own
+  # templates.
+  def SourceGroup(self):
+    return self._GroupByName('Source')
+
+  def ProductsGroup(self):
+    return self._GroupByName('Products')
+
+  # IntermediatesGroup is used to collect source-like files that are generated
+  # by rules or script phases and are placed in intermediate directories such
+  # as DerivedSources.
+  def IntermediatesGroup(self):
+    return self._GroupByName('Intermediates')
+
+  # FrameworksGroup and ProjectsGroup are top-level groups used to collect
+  # frameworks and projects.
+  def FrameworksGroup(self):
+    return self._GroupByName('Frameworks')
+
+  def ProjectsGroup(self):
+    return self._GroupByName('Projects')
+
+  def RootGroupForPath(self, path):
+    """Returns a PBXGroup child of this object to which path should be added.
+
+    This method is intended to choose between SourceGroup and
+    IntermediatesGroup on the basis of whether path is present in a source
+    directory or an intermediates directory.  For the purposes of this
+    determination, any path located within a derived file directory such as
+    PROJECT_DERIVED_FILE_DIR is treated as being in an intermediates
+    directory.
+
+    The returned value is a two-element tuple.  The first element is the
+    PBXGroup, and the second element specifies whether that group should be
+    organized hierarchically (True) or as a single flat list (False).
+    """
+
+    # TODO(mark): make this a class variable and bind to self on call?
+    # Also, this list is nowhere near exhaustive.
+    # INTERMEDIATE_DIR and SHARED_INTERMEDIATE_DIR are used by
+    # gyp.generator.xcode.  There should probably be some way for that module
+    # to push the names in, rather than having to hard-code them here.
+    source_tree_groups = {
+      'DERIVED_FILE_DIR':         (self.IntermediatesGroup, True),
+      'INTERMEDIATE_DIR':         (self.IntermediatesGroup, True),
+      'PROJECT_DERIVED_FILE_DIR': (self.IntermediatesGroup, True),
+      'SHARED_INTERMEDIATE_DIR':  (self.IntermediatesGroup, True),
+    }
+
+    (source_tree, path) = SourceTreeAndPathFromPath(path)
+    if source_tree != None and source_tree in source_tree_groups:
+      (group_func, hierarchical) = source_tree_groups[source_tree]
+      group = group_func()
+      return (group, hierarchical)
+
+    # TODO(mark): make additional choices based on file extension.
+
+    return (self.SourceGroup(), True)
+
+  def AddOrGetFileInRootGroup(self, path):
+    """Returns a PBXFileReference corresponding to path in the correct group
+    according to RootGroupForPath's heuristics.
+
+    If an existing PBXFileReference for path exists, it will be returned.
+    Otherwise, one will be created and returned.
+    """
+
+    (group, hierarchical) = self.RootGroupForPath(path)
+    return group.AddOrGetFileByPath(path, hierarchical)
+
+  def RootGroupsTakeOverOnlyChildren(self, recurse=False):
+    """Calls TakeOverOnlyChild for all groups in the main group."""
+
+    for group in self._properties['mainGroup']._properties['children']:
+      if isinstance(group, PBXGroup):
+        group.TakeOverOnlyChild(recurse)
+
+  def SortGroups(self):
+    # Sort the children of the mainGroup (like "Source" and "Products")
+    # according to their defined order.
+    self._properties['mainGroup']._properties['children'] = \
+        sorted(self._properties['mainGroup']._properties['children'],
+               cmp=lambda x,y: x.CompareRootGroup(y))
+
+    # Sort everything else by putting group before files, and going
+    # alphabetically by name within sections of groups and files.  SortGroup
+    # is recursive.
+    for group in self._properties['mainGroup']._properties['children']:
+      if not isinstance(group, PBXGroup):
+        continue
+
+      if group.Name() == 'Products':
+        # The Products group is a special case.  Instead of sorting
+        # alphabetically, sort things in the order of the targets that
+        # produce the products.  To do this, just build up a new list of
+        # products based on the targets.
+        products = []
+        for target in self._properties['targets']:
+          if not isinstance(target, PBXNativeTarget):
+            continue
+          product = target._properties['productReference']
+          # Make sure that the product is already in the products group.
+          assert product in group._properties['children']
+          products.append(product)
+
+        # Make sure that this process doesn't miss anything that was already
+        # in the products group.
+        assert len(products) == len(group._properties['children'])
+        group._properties['children'] = products
+      else:
+        group.SortGroup()
+
+  def AddOrGetProjectReference(self, other_pbxproject):
+    """Add a reference to another project file (via PBXProject object) to this
+    one.
+
+    Returns [ProductGroup, ProjectRef].  ProductGroup is a PBXGroup object in
+    this project file that contains a PBXReferenceProxy object for each
+    product of each PBXNativeTarget in the other project file.  ProjectRef is
+    a PBXFileReference to the other project file.
+
+    If this project file already references the other project file, the
+    existing ProductGroup and ProjectRef are returned.  The ProductGroup will
+    still be updated if necessary.
+    """
+
+    if not 'projectReferences' in self._properties:
+      self._properties['projectReferences'] = []
+
+    product_group = None
+    project_ref = None
+
+    if not other_pbxproject in self._other_pbxprojects:
+      # This project file isn't yet linked to the other one.  Establish the
+      # link.
+      product_group = PBXGroup({'name': 'Products'})
+
+      # ProductGroup is strong.
+      product_group.parent = self
+
+      # There's nothing unique about this PBXGroup, and if left alone, it will
+      # wind up with the same set of hashables as all other PBXGroup objects
+      # owned by the projectReferences list.  Add the hashables of the
+      # remote PBXProject that it's related to.
+      product_group._hashables.extend(other_pbxproject.Hashables())
+
+      # The other project reports its path as relative to the same directory
+      # that this project's path is relative to.  The other project's path
+      # is not necessarily already relative to this project.  Figure out the
+      # pathname that this project needs to use to refer to the other one.
+      this_path = posixpath.dirname(self.Path())
+      projectDirPath = self.GetProperty('projectDirPath')
+      if projectDirPath:
+        if posixpath.isabs(projectDirPath[0]):
+          this_path = projectDirPath
+        else:
+          this_path = posixpath.join(this_path, projectDirPath)
+      other_path = gyp.common.RelativePath(other_pbxproject.Path(), this_path)
+
+      # ProjectRef is weak (it's owned by the mainGroup hierarchy).
+      project_ref = PBXFileReference({
+            'lastKnownFileType': 'wrapper.pb-project',
+            'path':              other_path,
+            'sourceTree':        'SOURCE_ROOT',
+          })
+      self.ProjectsGroup().AppendChild(project_ref)
+
+      ref_dict = {'ProductGroup': product_group, 'ProjectRef': project_ref}
+      self._other_pbxprojects[other_pbxproject] = ref_dict
+      self.AppendProperty('projectReferences', ref_dict)
+
+      # Xcode seems to sort this list case-insensitively
+      self._properties['projectReferences'] = \
+          sorted(self._properties['projectReferences'], cmp=lambda x,y:
+                 cmp(x['ProjectRef'].Name().lower(),
+                     y['ProjectRef'].Name().lower()))
+    else:
+      # The link already exists.  Pull out the relevnt data.
+      project_ref_dict = self._other_pbxprojects[other_pbxproject]
+      product_group = project_ref_dict['ProductGroup']
+      project_ref = project_ref_dict['ProjectRef']
+
+    self._SetUpProductReferences(other_pbxproject, product_group, project_ref)
+
+    return [product_group, project_ref]
+
+  def _SetUpProductReferences(self, other_pbxproject, product_group,
+                              project_ref):
+    # TODO(mark): This only adds references to products in other_pbxproject
+    # when they don't exist in this pbxproject.  Perhaps it should also
+    # remove references from this pbxproject that are no longer present in
+    # other_pbxproject.  Perhaps it should update various properties if they
+    # change.
+    for target in other_pbxproject._properties['targets']:
+      if not isinstance(target, PBXNativeTarget):
+        continue
+
+      other_fileref = target._properties['productReference']
+      if product_group.GetChildByRemoteObject(other_fileref) is None:
+        # Xcode sets remoteInfo to the name of the target and not the name
+        # of its product, despite this proxy being a reference to the product.
+        container_item = PBXContainerItemProxy({
+              'containerPortal':      project_ref,
+              'proxyType':            2,
+              'remoteGlobalIDString': other_fileref,
+              'remoteInfo':           target.Name()
+            })
+        # TODO(mark): Does sourceTree get copied straight over from the other
+        # project?  Can the other project ever have lastKnownFileType here
+        # instead of explicitFileType?  (Use it if so?)  Can path ever be
+        # unset?  (I don't think so.)  Can other_fileref have name set, and
+        # does it impact the PBXReferenceProxy if so?  These are the questions
+        # that perhaps will be answered one day.
+        reference_proxy = PBXReferenceProxy({
+              'fileType':   other_fileref._properties['explicitFileType'],
+              'path':       other_fileref._properties['path'],
+              'sourceTree': other_fileref._properties['sourceTree'],
+              'remoteRef':  container_item,
+            })
+
+        product_group.AppendChild(reference_proxy)
+
+  def SortRemoteProductReferences(self):
+    # For each remote project file, sort the associated ProductGroup in the
+    # same order that the targets are sorted in the remote project file.  This
+    # is the sort order used by Xcode.
+
+    def CompareProducts(x, y, remote_products):
+      # x and y are PBXReferenceProxy objects.  Go through their associated
+      # PBXContainerItem to get the remote PBXFileReference, which will be
+      # present in the remote_products list.
+      x_remote = x._properties['remoteRef']._properties['remoteGlobalIDString']
+      y_remote = y._properties['remoteRef']._properties['remoteGlobalIDString']
+      x_index = remote_products.index(x_remote)
+      y_index = remote_products.index(y_remote)
+
+      # Use the order of each remote PBXFileReference in remote_products to
+      # determine the sort order.
+      return cmp(x_index, y_index)
+
+    for other_pbxproject, ref_dict in self._other_pbxprojects.iteritems():
+      # Build up a list of products in the remote project file, ordered the
+      # same as the targets that produce them.
+      remote_products = []
+      for target in other_pbxproject._properties['targets']:
+        if not isinstance(target, PBXNativeTarget):
+          continue
+        remote_products.append(target._properties['productReference'])
+
+      # Sort the PBXReferenceProxy children according to the list of remote
+      # products.
+      product_group = ref_dict['ProductGroup']
+      product_group._properties['children'] = sorted(
+          product_group._properties['children'],
+          cmp=lambda x, y: CompareProducts(x, y, remote_products))
+
+
+class XCProjectFile(XCObject):
+  _schema = XCObject._schema.copy()
+  _schema.update({
+    'archiveVersion': [0, int,        0, 1, 1],
+    'classes':        [0, dict,       0, 1, {}],
+    'objectVersion':  [0, int,        0, 1, 45],
+    'rootObject':     [0, PBXProject, 1, 1],
+  })
+
+  def SetXcodeVersion(self, version):
+    version_to_object_version = {
+      '2.4': 45,
+      '3.0': 45,
+      '3.1': 45,
+      '3.2': 46,
+    }
+    if not version in version_to_object_version:
+      supported_str = ', '.join(sorted(version_to_object_version.keys()))
+      raise Exception(
+          'Unsupported Xcode version %s (supported: %s)' %
+          ( version, supported_str ) )
+    compatibility_version = 'Xcode %s' % version
+    self._properties['rootObject'].SetProperty('compatibilityVersion',
+                                               compatibility_version)
+    self.SetProperty('objectVersion', version_to_object_version[version]);
+
+  def ComputeIDs(self, recursive=True, overwrite=True, hash=None):
+    # Although XCProjectFile is implemented here as an XCObject, it's not a
+    # proper object in the Xcode sense, and it certainly doesn't have its own
+    # ID.  Pass through an attempt to update IDs to the real root object.
+    if recursive:
+      self._properties['rootObject'].ComputeIDs(recursive, overwrite, hash)
+
+  def Print(self, file=sys.stdout):
+    self.VerifyHasRequiredProperties()
+
+    # Add the special "objects" property, which will be caught and handled
+    # separately during printing.  This structure allows a fairly standard
+    # loop do the normal printing.
+    self._properties['objects'] = {}
+    self._XCPrint(file, 0, '// !$*UTF8*$!\n')
+    if self._should_print_single_line:
+      self._XCPrint(file, 0, '{ ')
+    else:
+      self._XCPrint(file, 0, '{\n')
+    for property, value in sorted(self._properties.iteritems(),
+                                  cmp=lambda x, y: cmp(x, y)):
+      if property == 'objects':
+        self._PrintObjects(file)
+      else:
+        self._XCKVPrint(file, 1, property, value)
+    self._XCPrint(file, 0, '}\n')
+    del self._properties['objects']
+
+  def _PrintObjects(self, file):
+    if self._should_print_single_line:
+      self._XCPrint(file, 0, 'objects = {')
+    else:
+      self._XCPrint(file, 1, 'objects = {\n')
+
+    objects_by_class = {}
+    for object in self.Descendants():
+      if object == self:
+        continue
+      class_name = object.__class__.__name__
+      if not class_name in objects_by_class:
+        objects_by_class[class_name] = []
+      objects_by_class[class_name].append(object)
+
+    for class_name in sorted(objects_by_class):
+      self._XCPrint(file, 0, '\n')
+      self._XCPrint(file, 0, '/* Begin ' + class_name + ' section */\n')
+      for object in sorted(objects_by_class[class_name],
+                           cmp=lambda x, y: cmp(x.id, y.id)):
+        object.Print(file)
+      self._XCPrint(file, 0, '/* End ' + class_name + ' section */\n')
+
+    if self._should_print_single_line:
+      self._XCPrint(file, 0, '}; ')
+    else:
+      self._XCPrint(file, 1, '};\n')
diff --git a/deps/gyp/pylib/gyp/xml_fix.py b/deps/gyp/pylib/gyp/xml_fix.py
new file mode 100644
index 0000000000..5de848158d
--- /dev/null
+++ b/deps/gyp/pylib/gyp/xml_fix.py
@@ -0,0 +1,69 @@
+# Copyright (c) 2011 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Applies a fix to CR LF TAB handling in xml.dom.
+
+Fixes this: http://code.google.com/p/chromium/issues/detail?id=76293
+Working around this: http://bugs.python.org/issue5752
+TODO(bradnelson): Consider dropping this when we drop XP support.
+"""
+
+
+import xml.dom.minidom
+
+
+def _Replacement_write_data(writer, data, is_attrib=False):
+  """Writes datachars to writer."""
+  data = data.replace("&", "&amp;").replace("<", "&lt;")
+  data = data.replace("\"", "&quot;").replace(">", "&gt;")
+  if is_attrib:
+    data = data.replace(
+        "\r", "&#xD;").replace(
+        "\n", "&#xA;").replace(
+        "\t", "&#x9;")
+  writer.write(data)
+
+
+def _Replacement_writexml(self, writer, indent="", addindent="", newl=""):
+  # indent = current indentation
+  # addindent = indentation to add to higher levels
+  # newl = newline string
+  writer.write(indent+"<" + self.tagName)
+
+  attrs = self._get_attributes()
+  a_names = attrs.keys()
+  a_names.sort()
+
+  for a_name in a_names:
+    writer.write(" %s=\"" % a_name)
+    _Replacement_write_data(writer, attrs[a_name].value, is_attrib=True)
+    writer.write("\"")
+  if self.childNodes:
+    writer.write(">%s" % newl)
+    for node in self.childNodes:
+      node.writexml(writer, indent + addindent, addindent, newl)
+    writer.write("%s</%s>%s" % (indent, self.tagName, newl))
+  else:
+    writer.write("/>%s" % newl)
+
+
+class XmlFix(object):
+  """Object to manage temporary patching of xml.dom.minidom."""
+
+  def __init__(self):
+    # Preserve current xml.dom.minidom functions.
+    self.write_data = xml.dom.minidom._write_data
+    self.writexml = xml.dom.minidom.Element.writexml
+    # Inject replacement versions of a function and a method.
+    xml.dom.minidom._write_data = _Replacement_write_data
+    xml.dom.minidom.Element.writexml = _Replacement_writexml
+
+  def Cleanup(self):
+    if self.write_data:
+      xml.dom.minidom._write_data = self.write_data
+      xml.dom.minidom.Element.writexml = self.writexml
+      self.write_data = None
+
+  def __del__(self):
+    self.Cleanup()
diff --git a/deps/run_gyp b/deps/run_gyp
new file mode 100755
index 0000000000..6f14ef163a
--- /dev/null
+++ b/deps/run_gyp
@@ -0,0 +1,8 @@
+#!/usr/bin/env python
+import sys
+import os.path
+sys.path.append(os.path.join(os.path.dirname(sys.argv[0]), 'gyp', 'pylib'))
+import gyp
+
+if __name__ == '__main__':
+  sys.exit(gyp.script_main())
\ No newline at end of file