Initial import.

8 files changed, 1616 insertions, 0 deletions

diff --git a/chromium/v8/build/README.txt b/chromium/v8/build/README.txt
new file mode 100644
index 00000000000..5f242ada342
--- /dev/null
+++ b/chromium/v8/build/README.txt
@@ -0,0 +1,9 @@
+For build instructions, please refer to:
+
+https://code.google.com/p/v8/wiki/BuildingWithGYP
+
+TL;DR version on *nix:
+$ make dependencies        # Only needed once.
+$ make ia32.release -j8
+$ make ia32.release.check  # Optionally: run tests.
+
diff --git a/chromium/v8/build/all.gyp b/chromium/v8/build/all.gyp
new file mode 100644
index 00000000000..4b2fe52989e
--- /dev/null
+++ b/chromium/v8/build/all.gyp
@@ -0,0 +1,19 @@
+# Copyright 2011 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'targets': [
+    {
+      'target_name': 'All',
+      'type': 'none',
+      'dependencies': [
+        '../preparser/preparser.gyp:*',
+        '../samples/samples.gyp:*',
+        '../src/d8.gyp:d8',
+        '../test/cctest/cctest.gyp:*',
+      ],
+    }
+  ]
+}
+
diff --git a/chromium/v8/build/android.gypi b/chromium/v8/build/android.gypi
new file mode 100644
index 00000000000..ca097255bbb
--- /dev/null
+++ b/chromium/v8/build/android.gypi
@@ -0,0 +1,252 @@
+# Copyright 2012 the V8 project authors. 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.
+
+# Definitions for building standalone V8 binaries to run on Android.
+# This is mostly excerpted from:
+# http://src.chromium.org/viewvc/chrome/trunk/src/build/common.gypi
+
+{
+  'variables': {
+    # Location of Android NDK.
+    'variables': {
+      'android_ndk_root%': '<!(/bin/echo -n $ANDROID_NDK_ROOT)',
+      'android_toolchain%': '<!(/bin/echo -n $ANDROID_TOOLCHAIN)',
+      # This is set when building the Android WebView inside the Android build
+      # system, using the 'android' gyp backend.
+      'android_webview_build%': 0,
+    },
+    'conditions': [
+      ['android_ndk_root==""', {
+        'variables': {
+          'android_sysroot': '<(android_toolchain)/sysroot/',
+          'android_stlport': '<(android_toolchain)/sources/cxx-stl/stlport/',
+        },
+        'android_include': '<(android_sysroot)/usr/include',
+        'android_lib': '<(android_sysroot)/usr/lib',
+        'android_stlport_include': '<(android_stlport)/stlport',
+        'android_stlport_libs': '<(android_stlport)/libs',
+      }, {
+        'variables': {
+          'android_sysroot': '<(android_ndk_root)/platforms/android-9/arch-<(android_target_arch)',
+          'android_stlport': '<(android_ndk_root)/sources/cxx-stl/stlport/',
+        },
+        'android_include': '<(android_sysroot)/usr/include',
+        'android_lib': '<(android_sysroot)/usr/lib',
+        'android_stlport_include': '<(android_stlport)/stlport',
+        'android_stlport_libs': '<(android_stlport)/libs',
+      }],
+    ],
+    # Enable to use the system stlport, otherwise statically
+    # link the NDK one?
+    'use_system_stlport%': '<(android_webview_build)',
+    'android_stlport_library': 'stlport_static',
+    # Copy it out one scope.
+    'android_webview_build%': '<(android_webview_build)',
+    'OS': 'android',
+  },  # variables
+  'target_defaults': {
+    'defines': [
+      'ANDROID',
+      'V8_ANDROID_LOG_STDOUT',
+    ],
+    'configurations': {
+      'Release': {
+        'cflags': [
+          '-fomit-frame-pointer',
+        ],
+      },  # Release
+    },  # configurations
+    'cflags': [ '-Wno-abi', '-Wall', '-W', '-Wno-unused-parameter',
+                '-Wnon-virtual-dtor', '-fno-rtti', '-fno-exceptions', ],
+    'target_conditions': [
+      ['_toolset=="target"', {
+        'cflags!': [
+          '-pthread',  # Not supported by Android toolchain.
+        ],
+        'cflags': [
+          '-U__linux__',  # Don't allow toolchain to claim -D__linux__
+          '-ffunction-sections',
+          '-funwind-tables',
+          '-fstack-protector',
+          '-fno-short-enums',
+          '-finline-limit=64',
+          '-Wa,--noexecstack',
+          '-Wno-error=non-virtual-dtor',  # TODO(michaelbai): Fix warnings.
+          # Note: This include is in cflags to ensure that it comes after
+          # all of the includes.
+          '-I<(android_include)',
+        ],
+        'defines': [
+          'ANDROID',
+          #'__GNU_SOURCE=1',  # Necessary for clone()
+          'USE_STLPORT=1',
+          '_STLP_USE_PTR_SPECIALIZATIONS=1',
+          'HAVE_OFF64_T',
+          'HAVE_SYS_UIO_H',
+          'ANDROID_BINSIZE_HACK', # Enable temporary hacks to reduce binsize.
+        ],
+        'ldflags!': [
+          '-pthread',  # Not supported by Android toolchain.
+        ],
+        'ldflags': [
+          '-nostdlib',
+          '-Wl,--no-undefined',
+        ],
+        'libraries!': [
+            '-lrt',  # librt is built into Bionic.
+            # Not supported by Android toolchain.
+            # Where do these come from?  Can't find references in
+            # any Chromium gyp or gypi file.  Maybe they come from
+            # gyp itself?
+            '-lpthread', '-lnss3', '-lnssutil3', '-lsmime3', '-lplds4', '-lplc4', '-lnspr4',
+          ],
+          'libraries': [
+            '-l<(android_stlport_library)',
+            # Manually link the libgcc.a that the cross compiler uses.
+            '<!($CC -print-libgcc-file-name)',
+            '-lc',
+            '-ldl',
+            '-lstdc++',
+            '-lm',
+        ],
+        'conditions': [
+          ['android_webview_build==0', {
+            'ldflags': [
+              '-Wl,-rpath-link=<(android_lib)',
+              '-L<(android_lib)',
+            ],
+          }],
+          ['target_arch == "arm"', {
+            'ldflags': [
+              # Enable identical code folding to reduce size.
+              '-Wl,--icf=safe',
+            ],
+          }],
+          ['target_arch=="arm" and armv7==1', {
+            'cflags': [
+              '-march=armv7-a',
+              '-mtune=cortex-a8',
+              '-mfpu=vfp3',
+            ],
+          }],
+          # NOTE: The stlport header include paths below are specified in
+          # cflags rather than include_dirs because they need to come
+          # after include_dirs. Think of them like system headers, but
+          # don't use '-isystem' because the arm-linux-androideabi-4.4.3
+          # toolchain (circa Gingerbread) will exhibit strange errors.
+          # The include ordering here is important; change with caution.
+          ['use_system_stlport==0', {
+            'cflags': [
+              '-I<(android_stlport_include)',
+            ],
+            'conditions': [
+              ['target_arch=="arm" and armv7==1', {
+                'ldflags': [
+                  '-L<(android_stlport_libs)/armeabi-v7a',
+                ],
+              }],
+              ['target_arch=="arm" and armv7==0', {
+                'ldflags': [
+                  '-L<(android_stlport_libs)/armeabi',
+                ],
+              }],
+              ['target_arch=="mipsel"', {
+                'ldflags': [
+                  '-L<(android_stlport_libs)/mips',
+                ],
+              }],
+              ['target_arch=="ia32"', {
+                'ldflags': [
+                  '-L<(android_stlport_libs)/x86',
+                ],
+              }],
+            ],
+          }],
+          ['target_arch=="ia32"', {
+            # The x86 toolchain currently has problems with stack-protector.
+            'cflags!': [
+              '-fstack-protector',
+            ],
+            'cflags': [
+              '-fno-stack-protector',
+            ],
+          }],
+          ['target_arch=="mipsel"', {
+            # The mips toolchain currently has problems with stack-protector.
+            'cflags!': [
+              '-fstack-protector',
+              '-U__linux__'
+            ],
+            'cflags': [
+              '-fno-stack-protector',
+            ],
+          }],
+        ],
+        'target_conditions': [
+          ['_type=="executable"', {
+            'ldflags': [
+              '-Bdynamic',
+              '-Wl,-dynamic-linker,/system/bin/linker',
+              '-Wl,--gc-sections',
+              '-Wl,-z,nocopyreloc',
+              # crtbegin_dynamic.o should be the last item in ldflags.
+              '<(android_lib)/crtbegin_dynamic.o',
+            ],
+            'libraries': [
+              # crtend_android.o needs to be the last item in libraries.
+              # Do not add any libraries after this!
+              '<(android_lib)/crtend_android.o',
+            ],
+          }],
+          ['_type=="shared_library"', {
+            'ldflags': [
+              '-Wl,-shared,-Bsymbolic',
+              '<(android_lib)/crtbegin_so.o',
+            ],
+          }],
+          ['_type=="static_library"', {
+            'ldflags': [
+              # Don't export symbols from statically linked libraries.
+              '-Wl,--exclude-libs=ALL',
+            ],
+          }],
+        ],
+      }],  # _toolset=="target"
+      # Settings for building host targets using the system toolchain.
+      ['_toolset=="host"', {
+        'cflags': [ '-m32', '-pthread' ],
+        'ldflags': [ '-m32', '-pthread' ],
+        'ldflags!': [
+          '-Wl,-z,noexecstack',
+          '-Wl,--gc-sections',
+          '-Wl,-O1',
+          '-Wl,--as-needed',
+        ],
+      }],
+    ],  # target_conditions
+  },  # target_defaults
+}
diff --git a/chromium/v8/build/features.gypi b/chromium/v8/build/features.gypi
new file mode 100644
index 00000000000..3c6d25f7587
--- /dev/null
+++ b/chromium/v8/build/features.gypi
@@ -0,0 +1,111 @@
+# Copyright 2013 the V8 project authors. 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.
+
+# Compile time controlled V8 features.
+
+{
+  'variables': {
+    'v8_compress_startup_data%': 'off',
+
+    'v8_enable_debugger_support%': 1,
+
+    'v8_enable_disassembler%': 0,
+
+    'v8_enable_gdbjit%': 0,
+
+    'v8_object_print%': 0,
+
+    'v8_enable_verify_heap%': 0,
+
+    'v8_use_snapshot%': 'true',
+
+    # With post mortem support enabled, metadata is embedded into libv8 that
+    # describes various parameters of the VM for use by debuggers. See
+    # tools/gen-postmortem-metadata.py for details.
+    'v8_postmortem_support%': 'false',
+
+    # Interpreted regexp engine exists as platform-independent alternative
+    # based where the regular expression is compiled to a bytecode.
+    'v8_interpreted_regexp%': 0,
+
+    # Enable ECMAScript Internationalization API. Enabling this feature will
+    # add a dependency on the ICU library.
+    'v8_enable_i18n_support%': 0,
+  },
+  'target_defaults': {
+    'conditions': [
+      ['v8_enable_debugger_support==1', {
+        'defines': ['ENABLE_DEBUGGER_SUPPORT',],
+      }],
+      ['v8_enable_disassembler==1', {
+        'defines': ['ENABLE_DISASSEMBLER',],
+      }],
+      ['v8_enable_gdbjit==1', {
+        'defines': ['ENABLE_GDB_JIT_INTERFACE',],
+      }],
+      ['v8_object_print==1', {
+        'defines': ['OBJECT_PRINT',],
+      }],
+      ['v8_enable_verify_heap==1', {
+        'defines': ['VERIFY_HEAP',],
+      }],
+      ['v8_interpreted_regexp==1', {
+        'defines': ['V8_INTERPRETED_REGEXP',],
+      }],
+      ['v8_enable_i18n_support==1', {
+        'defines': ['V8_I18N_SUPPORT',],
+      }],
+      ['v8_compress_startup_data=="bz2"', {
+        'defines': [
+          'COMPRESS_STARTUP_DATA_BZ2',
+        ],
+      }],
+    ],  # conditions
+    'configurations': {
+      'Debug': {
+        'variables': {
+          'v8_enable_extra_checks%': 1,
+        },
+        'conditions': [
+          ['v8_enable_extra_checks==1', {
+            'defines': ['ENABLE_EXTRA_CHECKS',],
+          }],
+        ],
+      },  # Debug
+      'Release': {
+        'variables': {
+          'v8_enable_extra_checks%': 0,
+        },
+        'conditions': [
+          ['v8_enable_extra_checks==1', {
+            'defines': ['ENABLE_EXTRA_CHECKS',],
+          }],
+        ],  # conditions
+      },  # Release
+    },  # configurations
+  },  # target_defaults
+}
diff --git a/chromium/v8/build/gyp_v8 b/chromium/v8/build/gyp_v8
new file mode 100755
index 00000000000..92e6503925c
--- /dev/null
+++ b/chromium/v8/build/gyp_v8
@@ -0,0 +1,171 @@
+#!/usr/bin/env python
+#
+# Copyright 2012 the V8 project authors. 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.
+
+# This script is wrapper for V8 that adds some support for how GYP
+# is invoked by V8 beyond what can be done in the gclient hooks.
+
+import glob
+import os
+import platform
+import shlex
+import sys
+
+script_dir = os.path.dirname(__file__)
+v8_root = os.path.normpath(os.path.join(script_dir, os.pardir))
+
+if __name__ == '__main__':
+  os.chdir(v8_root)
+  script_dir = os.path.dirname(__file__)
+  v8_root = '.'
+
+sys.path.insert(0, os.path.join(v8_root, 'build', 'gyp', 'pylib'))
+import gyp
+
+# Add paths so that pymod_do_main(...) can import files.
+sys.path.insert(
+    1, os.path.abspath(os.path.join(v8_root, 'tools', 'generate_shim_headers')))
+
+
+def apply_gyp_environment(file_path=None):
+  """
+  Reads in a *.gyp_env file and applies the valid keys to os.environ.
+  """
+  if not file_path or not os.path.exists(file_path):
+    return
+  file_contents = open(file_path).read()
+  try:
+    file_data = eval(file_contents, {'__builtins__': None}, None)
+  except SyntaxError, e:
+    e.filename = os.path.abspath(file_path)
+    raise
+  supported_vars = ( 'V8_GYP_FILE',
+                     'V8_GYP_SYNTAX_CHECK',
+                     'GYP_DEFINES',
+                     'GYP_GENERATOR_FLAGS',
+                     'GYP_GENERATOR_OUTPUT', )
+  for var in supported_vars:
+    val = file_data.get(var)
+    if val:
+      if var in os.environ:
+        print 'INFO: Environment value for "%s" overrides value in %s.' % (
+            var, os.path.abspath(file_path)
+        )
+      else:
+        os.environ[var] = val
+
+
+def additional_include_files(args=[]):
+  """
+  Returns a list of additional (.gypi) files to include, without
+  duplicating ones that are already specified on the command line.
+  """
+  # Determine the include files specified on the command line.
+  # This doesn't cover all the different option formats you can use,
+  # but it's mainly intended to avoid duplicating flags on the automatic
+  # makefile regeneration which only uses this format.
+  specified_includes = set()
+  for arg in args:
+    if arg.startswith('-I') and len(arg) > 2:
+      specified_includes.add(os.path.realpath(arg[2:]))
+
+  result = []
+  def AddInclude(path):
+    if os.path.realpath(path) not in specified_includes:
+      result.append(path)
+
+  # Always include standalone.gypi
+  AddInclude(os.path.join(v8_root, 'build', 'standalone.gypi'))
+
+  # Optionally add supplemental .gypi files if present.
+  supplements = glob.glob(os.path.join(v8_root, '*', 'supplement.gypi'))
+  for supplement in supplements:
+    AddInclude(supplement)
+
+  return result
+
+
+def run_gyp(args):
+  rc = gyp.main(args)
+  if rc != 0:
+    print 'Error running GYP'
+    sys.exit(rc)
+
+
+if __name__ == '__main__':
+  args = sys.argv[1:]
+
+  if 'SKIP_V8_GYP_ENV' not in os.environ:
+    # Update the environment based on v8.gyp_env
+    gyp_env_path = os.path.join(os.path.dirname(v8_root), 'v8.gyp_env')
+    apply_gyp_environment(gyp_env_path)
+
+  # This could give false positives since it doesn't actually do real option
+  # parsing.  Oh well.
+  gyp_file_specified = False
+  for arg in args:
+    if arg.endswith('.gyp'):
+      gyp_file_specified = True
+      break
+
+  # If we didn't get a file, check an env var, and then fall back to
+  # assuming 'all.gyp' from the same directory as the script.
+  if not gyp_file_specified:
+    gyp_file = os.environ.get('V8_GYP_FILE')
+    if gyp_file:
+      # Note that V8_GYP_FILE values can't have backslashes as
+      # path separators even on Windows due to the use of shlex.split().
+      args.extend(shlex.split(gyp_file))
+    else:
+      # Note that this must not start with "./" or things break.
+      # So we rely on having done os.chdir(v8_root) above and use the
+      # relative path.
+      args.append(os.path.join('build', 'all.gyp'))
+
+  args.extend(['-I' + i for i in additional_include_files(args)])
+
+  # There shouldn't be a circular dependency relationship between .gyp files
+  args.append('--no-circular-check')
+
+  # Set the GYP DEPTH variable to the root of the V8 project.
+  args.append('--depth=' + v8_root)
+
+  # If V8_GYP_SYNTAX_CHECK is set to 1, it will invoke gyp with --check
+  # to enfore syntax checking.
+  syntax_check = os.environ.get('V8_GYP_SYNTAX_CHECK')
+  if syntax_check and int(syntax_check):
+    args.append('--check')
+
+  print 'Updating projects from gyp files...'
+  sys.stdout.flush()
+
+  # Generate for the architectures supported on the given platform.
+  gyp_args = list(args)
+  if platform.system() == 'Linux':
+    gyp_args.append('--generator-output=out')
+  run_gyp(gyp_args)
diff --git a/chromium/v8/build/shim_headers.gypi b/chromium/v8/build/shim_headers.gypi
new file mode 100644
index 00000000000..940211c2401
--- /dev/null
+++ b/chromium/v8/build/shim_headers.gypi
@@ -0,0 +1,73 @@
+# Copyright 2013 the V8 project authors. 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.
+
+# This file is meant to be included into a target to handle shim headers
+# in a consistent manner. To use this the following variables need to be
+# defined:
+#   headers_root_path: string: path to directory containing headers
+#   header_filenames: list: list of header file names
+
+{
+  'variables': {
+    'shim_headers_path': '<(SHARED_INTERMEDIATE_DIR)/shim_headers/<(_target_name)/<(_toolset)',
+    'shim_generator_additional_args%': [],
+  },
+  'include_dirs++': [
+    '<(shim_headers_path)',
+  ],
+  'all_dependent_settings': {
+    'include_dirs+++': [
+      '<(shim_headers_path)',
+    ],
+  },
+  'actions': [
+    {
+      'variables': {
+        'generator_path': '<(DEPTH)/tools/generate_shim_headers/generate_shim_headers.py',
+        'generator_args': [
+          '--headers-root', '<(headers_root_path)',
+          '--output-directory', '<(shim_headers_path)',
+          '<@(shim_generator_additional_args)',
+          '<@(header_filenames)',
+        ],
+      },
+      'action_name': 'generate_<(_target_name)_shim_headers',
+      'inputs': [
+        '<(generator_path)',
+      ],
+      'outputs': [
+        '<!@pymod_do_main(generate_shim_headers <@(generator_args) --outputs)',
+      ],
+      'action': ['python',
+                 '<(generator_path)',
+                 '<@(generator_args)',
+                 '--generate',
+      ],
+      'message': 'Generating <(_target_name) shim headers.',
+    },
+  ],
+}
diff --git a/chromium/v8/build/standalone.gypi b/chromium/v8/build/standalone.gypi
new file mode 100644
index 00000000000..5c017d5f507
--- /dev/null
+++ b/chromium/v8/build/standalone.gypi
@@ -0,0 +1,285 @@
+# Copyright 2012 the V8 project authors. 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.
+
+# Definitions to be used when building stand-alone V8 binaries.
+
+{
+  # We need to include toolchain.gypi here for third-party sources that don't
+  # directly include it themselves.
+  'includes': ['toolchain.gypi'],
+  'variables': {
+    'component%': 'static_library',
+    'clang%': 0,
+    'visibility%': 'hidden',
+    'v8_enable_backtrace%': 0,
+    'v8_enable_i18n_support%': 0,
+    'msvs_multi_core_compile%': '1',
+    'mac_deployment_target%': '10.5',
+    'variables': {
+      'variables': {
+        'variables': {
+          'conditions': [
+            ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or \
+               OS=="netbsd" or OS=="mac"', {
+              # This handles the Unix platforms we generally deal with.
+              # Anything else gets passed through, which probably won't work
+              # very well; such hosts should pass an explicit target_arch
+              # to gyp.
+              'host_arch%':
+                '<!(uname -m | sed -e "s/i.86/ia32/;\
+                  s/x86_64/x64/;s/amd64/x64/;s/arm.*/arm/;s/mips.*/mipsel/")',
+            }, {
+              # OS!="linux" and OS!="freebsd" and OS!="openbsd" and
+              # OS!="netbsd" and OS!="mac"
+              'host_arch%': 'ia32',
+            }],
+          ],
+        },
+        'host_arch%': '<(host_arch)',
+        'target_arch%': '<(host_arch)',
+      },
+      'host_arch%': '<(host_arch)',
+      'target_arch%': '<(target_arch)',
+      'v8_target_arch%': '<(target_arch)',
+    },
+    'host_arch%': '<(host_arch)',
+    'target_arch%': '<(target_arch)',
+    'v8_target_arch%': '<(v8_target_arch)',
+    'werror%': '-Werror',
+
+    # .gyp files or targets should set v8_code to 1 if they build V8 specific
+    # code, as opposed to external code.  This variable is used to control such
+    # things as the set of warnings to enable, and whether warnings are treated
+    # as errors.
+    'v8_code%': 0,
+
+    'conditions': [
+      ['(v8_target_arch=="arm" and host_arch!="arm") or \
+        (v8_target_arch=="mipsel" and host_arch!="mipsel") or \
+        (v8_target_arch=="x64" and host_arch!="x64") or \
+        (OS=="android")', {
+        'want_separate_host_toolset': 1,
+      }, {
+        'want_separate_host_toolset': 0,
+      }],
+      ['OS == "win"', {
+        'os_posix%': 0,
+      }, {
+        'os_posix%': 1,
+      }],
+      ['(v8_target_arch=="ia32" or v8_target_arch=="x64") and \
+        (OS=="linux" or OS=="mac")', {
+        'v8_enable_gdbjit%': 1,
+      }, {
+        'v8_enable_gdbjit%': 0,
+      }],
+    ],
+    # Default ARM variable settings.
+    'armv7%': 'default',
+    'arm_neon%': 0,
+    'arm_fpu%': 'vfpv3',
+    'arm_float_abi%': 'default',
+    'arm_thumb': 'default',
+  },
+  'target_defaults': {
+    'variables': {
+      'v8_code%': '<(v8_code)',
+    },
+    'default_configuration': 'Debug',
+    'configurations': {
+      'Debug': {
+        'cflags': [ '-g', '-O0' ],
+      },
+      'Release': {
+        # Xcode insists on this empty entry.
+      },
+    },
+    'target_conditions': [
+      ['v8_code == 0', {
+        'defines!': [
+          'DEBUG',
+        ],
+        'conditions': [
+          ['os_posix == 1 and OS != "mac"', {
+            'cflags!': [
+              '-Werror',
+            ],
+          }],
+          ['OS == "mac"', {
+            'xcode_settings': {
+              'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',    # -Werror
+            },
+          }],
+          ['OS == "win"', {
+            'msvs_settings': {
+              'VCCLCompilerTool': {
+                'WarnAsError': 'false',
+              },
+            },
+          }],
+        ],
+      }],
+    ],
+  },
+  'conditions': [
+    ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
+       or OS=="netbsd"', {
+      'target_defaults': {
+        'cflags': [ '-Wall', '<(werror)', '-W', '-Wno-unused-parameter',
+                    '-pthread', '-fno-exceptions', '-pedantic' ],
+        'cflags_cc': [ '-Wnon-virtual-dtor', '-fno-rtti' ],
+        'ldflags': [ '-pthread', ],
+        'conditions': [
+          [ 'OS=="linux"', {
+            'cflags': [ '-ansi' ],
+          }],
+          [ 'visibility=="hidden" and v8_enable_backtrace==0', {
+            'cflags': [ '-fvisibility=hidden' ],
+          }],
+          [ 'component=="shared_library"', {
+            'cflags': [ '-fPIC', ],
+          }],
+        ],
+      },
+    }],
+    # 'OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"
+    #  or OS=="netbsd"'
+    ['OS=="win"', {
+      'target_defaults': {
+        'defines': [
+          '_CRT_SECURE_NO_DEPRECATE',
+          '_CRT_NONSTDC_NO_DEPRECATE',
+        ],
+        'conditions': [
+          ['component=="static_library"', {
+            'defines': [
+              '_HAS_EXCEPTIONS=0',
+            ],
+          }],
+        ],
+        'msvs_cygwin_dirs': ['<(DEPTH)/third_party/cygwin'],
+        'msvs_disabled_warnings': [4355, 4800],
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'MinimalRebuild': 'false',
+            'BufferSecurityCheck': 'true',
+            'EnableFunctionLevelLinking': 'true',
+            'RuntimeTypeInfo': 'false',
+            'WarningLevel': '3',
+            'WarnAsError': 'true',
+            'DebugInformationFormat': '3',
+            'Detect64BitPortabilityProblems': 'false',
+            'conditions': [
+              [ 'msvs_multi_core_compile', {
+                'AdditionalOptions': ['/MP'],
+              }],
+              ['component=="shared_library"', {
+                'ExceptionHandling': '1',  # /EHsc
+              }, {
+                'ExceptionHandling': '0',
+              }],
+            ],
+          },
+          'VCLibrarianTool': {
+            'AdditionalOptions': ['/ignore:4221'],
+          },
+          'VCLinkerTool': {
+            'AdditionalDependencies': [
+              'ws2_32.lib',
+            ],
+            'GenerateDebugInformation': 'true',
+            'MapFileName': '$(OutDir)\\$(TargetName).map',
+            'ImportLibrary': '$(OutDir)\\lib\\$(TargetName).lib',
+            'FixedBaseAddress': '1',
+            # LinkIncremental values:
+            #   0 == default
+            #   1 == /INCREMENTAL:NO
+            #   2 == /INCREMENTAL
+            'LinkIncremental': '1',
+            # SubSystem values:
+            #   0 == not set
+            #   1 == /SUBSYSTEM:CONSOLE
+            #   2 == /SUBSYSTEM:WINDOWS
+            'SubSystem': '1',
+
+            'conditions': [
+              ['v8_enable_i18n_support==1', {
+                'AdditionalDependencies': [
+                  'advapi32.lib',
+                ],
+              }],
+            ],
+          },
+        },
+      },
+    }],  # OS=="win"
+    ['OS=="mac"', {
+      'xcode_settings': {
+        'SYMROOT': '<(DEPTH)/xcodebuild',
+      },
+      'target_defaults': {
+        'xcode_settings': {
+          'ALWAYS_SEARCH_USER_PATHS': 'NO',
+          'GCC_C_LANGUAGE_STANDARD': 'ansi',        # -ansi
+          'GCC_CW_ASM_SYNTAX': 'NO',                # No -fasm-blocks
+          'GCC_DYNAMIC_NO_PIC': 'NO',               # No -mdynamic-no-pic
+                                                    # (Equivalent to -fPIC)
+          'GCC_ENABLE_CPP_EXCEPTIONS': 'NO',        # -fno-exceptions
+          'GCC_ENABLE_CPP_RTTI': 'NO',              # -fno-rtti
+          'GCC_ENABLE_PASCAL_STRINGS': 'NO',        # No -mpascal-strings
+          # GCC_INLINES_ARE_PRIVATE_EXTERN maps to -fvisibility-inlines-hidden
+          'GCC_INLINES_ARE_PRIVATE_EXTERN': 'YES',
+          'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',      # -fvisibility=hidden
+          'GCC_THREADSAFE_STATICS': 'NO',           # -fno-threadsafe-statics
+          'GCC_TREAT_WARNINGS_AS_ERRORS': 'YES',    # -Werror
+          'GCC_VERSION': 'com.apple.compilers.llvmgcc42',
+          'GCC_WARN_ABOUT_MISSING_NEWLINE': 'YES',  # -Wnewline-eof
+          'GCC_WARN_NON_VIRTUAL_DESTRUCTOR': 'YES', # -Wnon-virtual-dtor
+          # MACOSX_DEPLOYMENT_TARGET maps to -mmacosx-version-min
+          'MACOSX_DEPLOYMENT_TARGET': '<(mac_deployment_target)',
+          'PREBINDING': 'NO',                       # No -Wl,-prebind
+          'SYMROOT': '<(DEPTH)/xcodebuild',
+          'USE_HEADERMAP': 'NO',
+          'OTHER_CFLAGS': [
+            '-fno-strict-aliasing',
+          ],
+          'WARNING_CFLAGS': [
+            '-Wall',
+            '-Wendif-labels',
+            '-W',
+            '-Wno-unused-parameter',
+          ],
+        },
+        'target_conditions': [
+          ['_type!="static_library"', {
+            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
+          }],
+        ],  # target_conditions
+      },  # target_defaults
+    }],  # OS=="mac"
+  ],
+}
diff --git a/chromium/v8/build/toolchain.gypi b/chromium/v8/build/toolchain.gypi
new file mode 100644
index 00000000000..ddb8aafad0c
--- /dev/null
+++ b/chromium/v8/build/toolchain.gypi
@@ -0,0 +1,696 @@
+# Copyright 2013 the V8 project authors. 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.
+
+# Shared definitions for all V8-related targets.
+
+{
+  'variables': {
+    'msvs_use_common_release': 0,
+    'gcc_version%': 'unknown',
+    'CXX%': '${CXX:-$(which g++)}',  # Used to assemble a shell command.
+    'v8_target_arch%': '<(target_arch)',
+    # Native Client builds currently use the V8 ARM JIT and
+    # arm/simulator-arm.cc to defer the significant effort required
+    # for NaCl JIT support. The nacl_target_arch variable provides
+    # the 'true' target arch for places in this file that need it.
+    # TODO(bradchen): get rid of nacl_target_arch when someday
+    # NaCl V8 builds stop using the ARM simulator
+    'nacl_target_arch%': 'none',     # must be set externally
+
+    # Setting 'v8_can_use_vfp32dregs' to 'true' will cause V8 to use the VFP
+    # registers d16-d31 in the generated code, both in the snapshot and for the
+    # ARM target. Leaving the default value of 'false' will avoid the use of
+    # these registers in the snapshot and use CPU feature probing when running
+    # on the target.
+    'v8_can_use_vfp32dregs%': 'false',
+    'arm_test%': 'off',
+
+    # Similar to vfp but on MIPS.
+    'v8_can_use_fpu_instructions%': 'true',
+
+    # Similar to the ARM hard float ABI but on MIPS.
+    'v8_use_mips_abi_hardfloat%': 'true',
+
+    # Default arch variant for MIPS.
+    'mips_arch_variant%': 'mips32r2',
+
+    'v8_enable_backtrace%': 0,
+
+    # Speeds up Debug builds:
+    # 0 - Compiler optimizations off (debuggable) (default). This may
+    #     be 5x slower than Release (or worse).
+    # 1 - Turn on compiler optimizations. This may be hard or impossible to
+    #     debug. This may still be 2x slower than Release (or worse).
+    # 2 - Turn on optimizations, and also #undef DEBUG / #define NDEBUG
+    #     (but leave V8_ENABLE_CHECKS and most other assertions enabled.
+    #     This may cause some v8 tests to fail in the Debug configuration.
+    #     This roughly matches the performance of a Release build and can
+    #     be used by embedders that need to build their own code as debug
+    #     but don't want or need a debug version of V8. This should produce
+    #     near-release speeds.
+    'v8_optimized_debug%': 0,
+
+    # Enable profiling support. Only required on Windows.
+    'v8_enable_prof%': 0,
+
+    # Some versions of GCC 4.5 seem to need -fno-strict-aliasing.
+    'v8_no_strict_aliasing%': 0,
+
+    # Chrome needs this definition unconditionally. For standalone V8 builds,
+    # it's handled in build/standalone.gypi.
+    'want_separate_host_toolset%': 1,
+
+    'host_os%': '<(OS)',
+    'werror%': '-Werror',
+    # For a shared library build, results in "libv8-<(soname_version).so".
+    'soname_version%': '',
+
+    # Allow to suppress the array bounds warning (default is no suppression).
+    'wno_array_bounds%': '',
+  },
+  'target_defaults': {
+    'conditions': [
+      ['v8_target_arch=="arm"', {
+        'defines': [
+          'V8_TARGET_ARCH_ARM',
+        ],
+        'target_conditions': [
+          ['_toolset=="host"', {
+            'variables': {
+              'armcompiler': '<!($(echo ${CXX_host:-$(which g++)}) -v 2>&1 | grep -q "^Target: arm" && echo "yes" || echo "no")',
+            },
+            'conditions': [
+              ['armcompiler=="yes"', {
+                'conditions': [
+                  [ 'armv7==1', {
+                    'cflags': ['-march=armv7-a',],
+                  }],
+                  [ 'armv7==1 or armv7=="default"', {
+                    'conditions': [
+                      [ 'arm_neon==1', {
+                        'cflags': ['-mfpu=neon',],
+                      },
+                      {
+                        'conditions': [
+                          [ 'arm_fpu!="default"', {
+                            'cflags': ['-mfpu=<(arm_fpu)',],
+                          }],
+                        ],
+                      }],
+                    ],
+                  }],
+                  [ 'arm_float_abi!="default"', {
+                    'cflags': ['-mfloat-abi=<(arm_float_abi)',],
+                  }],
+                  [ 'arm_thumb==1', {
+                    'cflags': ['-mthumb',],
+                  }],
+                  [ 'arm_thumb==0', {
+                    'cflags': ['-marm',],
+                  }],
+                  [ 'arm_test=="on"', {
+                    'defines': [
+                      'ARM_TEST',
+                    ],
+                  }],
+                ],
+              }, {
+                # armcompiler=="no"
+                'conditions': [
+                  [ 'armv7==1 or armv7=="default"', {
+                    'defines': [
+                      'CAN_USE_ARMV7_INSTRUCTIONS=1',
+                    ],
+                    'conditions': [
+                      [ 'arm_fpu=="default"', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                        ],
+                      }],
+                      [ 'arm_fpu=="vfpv3-d16"', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                        ],
+                      }],
+                      [ 'arm_fpu=="vfpv3"', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                          'CAN_USE_VFP32DREGS',
+                        ],
+                      }],
+                      [ 'arm_fpu=="neon" or arm_neon==1', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                          'CAN_USE_VFP32DREGS',
+                        ],
+                      }],
+                    ],
+                  }],
+                  [ 'arm_float_abi=="hard"', {
+                    'defines': [
+                      'USE_EABI_HARDFLOAT=1',
+                    ],
+                  }],
+                  [ 'arm_float_abi=="softfp" or arm_float_abi=="default"', {
+                    'defines': [
+                      'USE_EABI_HARDFLOAT=0',
+                    ],
+                  }],
+                ],
+                'defines': [
+                  'ARM_TEST',
+                ],
+              }],
+            ],
+          }],  # _toolset=="host"
+          ['_toolset=="target"', {
+            'variables': {
+              'armcompiler': '<!($(echo ${CXX_target:-<(CXX)}) -v 2>&1 | grep -q "^Target: arm" && echo "yes" || echo "no")',
+            },
+            'conditions': [
+              ['armcompiler=="yes"', {
+                'conditions': [
+                  [ 'armv7==1', {
+                    'cflags': ['-march=armv7-a',],
+                  }],
+                  [ 'armv7==1 or armv7=="default"', {
+                    'conditions': [
+                      [ 'arm_neon==1', {
+                        'cflags': ['-mfpu=neon',],
+                      },
+                      {
+                        'conditions': [
+                          [ 'arm_fpu!="default"', {
+                            'cflags': ['-mfpu=<(arm_fpu)',],
+                          }],
+                        ],
+                      }],
+                    ],
+                  }],
+                  [ 'arm_float_abi!="default"', {
+                    'cflags': ['-mfloat-abi=<(arm_float_abi)',],
+                  }],
+                  [ 'arm_thumb==1', {
+                    'cflags': ['-mthumb',],
+                  }],
+                  [ 'arm_thumb==0', {
+                    'cflags': ['-marm',],
+                  }],
+                  [ 'arm_test=="on"', {
+                    'defines': [
+                      'ARM_TEST',
+                    ],
+                  }],
+                ],
+              }, {
+                # armcompiler=="no"
+                'conditions': [
+                  [ 'armv7==1 or armv7=="default"', {
+                    'defines': [
+                      'CAN_USE_ARMV7_INSTRUCTIONS=1',
+                    ],
+                    'conditions': [
+                      [ 'arm_fpu=="default"', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                        ],
+                      }],
+                      [ 'arm_fpu=="vfpv3-d16"', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                        ],
+                      }],
+                      [ 'arm_fpu=="vfpv3"', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                          'CAN_USE_VFP32DREGS',
+                        ],
+                      }],
+                      [ 'arm_fpu=="neon" or arm_neon==1', {
+                        'defines': [
+                          'CAN_USE_VFP3_INSTRUCTIONS',
+                          'CAN_USE_VFP32DREGS',
+                        ],
+                      }],
+                    ],
+                  }],
+                  [ 'arm_float_abi=="hard"', {
+                    'defines': [
+                      'USE_EABI_HARDFLOAT=1',
+                    ],
+                  }],
+                  [ 'arm_float_abi=="softfp" or arm_float_abi=="default"', {
+                    'defines': [
+                      'USE_EABI_HARDFLOAT=0',
+                    ],
+                  }],
+                ],
+                'defines': [
+                  'ARM_TEST',
+                ],
+              }],
+            ],
+          }],  # _toolset=="target"
+        ],
+      }],  # v8_target_arch=="arm"
+      ['v8_target_arch=="ia32"', {
+        'defines': [
+          'V8_TARGET_ARCH_IA32',
+        ],
+      }],  # v8_target_arch=="ia32"
+      ['v8_target_arch=="mipsel"', {
+        'defines': [
+          'V8_TARGET_ARCH_MIPS',
+        ],
+        'variables': {
+          'mipscompiler': '<!($(echo <(CXX)) -v 2>&1 | grep -q "^Target: mips" && echo "yes" || echo "no")',
+        },
+        'conditions': [
+          ['mipscompiler=="yes"', {
+            'target_conditions': [
+              ['_toolset=="target"', {
+                'cflags': ['-EL'],
+                'ldflags': ['-EL'],
+                'conditions': [
+                  [ 'v8_use_mips_abi_hardfloat=="true"', {
+                    'cflags': ['-mhard-float'],
+                    'ldflags': ['-mhard-float'],
+                  }, {
+                    'cflags': ['-msoft-float'],
+                    'ldflags': ['-msoft-float'],
+                  }],
+                  ['mips_arch_variant=="mips32r2"', {
+                    'cflags': ['-mips32r2', '-Wa,-mips32r2'],
+                  }],
+                  ['mips_arch_variant=="mips32r1"', {
+                    'cflags': ['-mips32', '-Wa,-mips32'],
+                 }],
+                  ['mips_arch_variant=="loongson"', {
+                    'cflags': ['-mips3', '-Wa,-mips3'],
+                  }],
+                ],
+              }],
+            ],
+          }],
+          [ 'v8_can_use_fpu_instructions=="true"', {
+            'defines': [
+              'CAN_USE_FPU_INSTRUCTIONS',
+            ],
+          }],
+          [ 'v8_use_mips_abi_hardfloat=="true"', {
+            'defines': [
+              '__mips_hard_float=1',
+              'CAN_USE_FPU_INSTRUCTIONS',
+            ],
+          }, {
+            'defines': [
+              '__mips_soft_float=1'
+            ],
+          }],
+          ['mips_arch_variant=="mips32r2"', {
+            'defines': ['_MIPS_ARCH_MIPS32R2',],
+          }],
+          ['mips_arch_variant=="loongson"', {
+            'defines': ['_MIPS_ARCH_LOONGSON',],
+          }],
+        ],
+      }],  # v8_target_arch=="mipsel"
+      ['v8_target_arch=="x64"', {
+        'defines': [
+          'V8_TARGET_ARCH_X64',
+        ],
+        'xcode_settings': {
+          'ARCHS': [ 'x86_64' ],
+        },
+        'msvs_settings': {
+          'VCLinkerTool': {
+            'StackReserveSize': '2097152',
+          },
+        },
+        'msvs_configuration_platform': 'x64',
+      }],  # v8_target_arch=="x64"
+      ['OS=="win"', {
+        'defines': [
+          'WIN32',
+        ],
+        'msvs_configuration_attributes': {
+          'OutputDirectory': '<(DEPTH)\\build\\$(ConfigurationName)',
+          'IntermediateDirectory': '$(OutDir)\\obj\\$(ProjectName)',
+          'CharacterSet': '1',
+        },
+      }],
+      ['OS=="win" and v8_enable_prof==1', {
+        'msvs_settings': {
+          'VCLinkerTool': {
+            'GenerateMapFile': 'true',
+          },
+        },
+      }],
+      ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
+         or OS=="netbsd"', {
+        'conditions': [
+          [ 'v8_no_strict_aliasing==1', {
+            'cflags': [ '-fno-strict-aliasing' ],
+          }],
+        ],  # conditions
+      }],
+      ['OS=="solaris"', {
+        'defines': [ '__C99FEATURES__=1' ],  # isinf() etc.
+      }],
+      ['(OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
+         or OS=="netbsd" or OS=="mac" or OS=="android") and \
+        (v8_target_arch=="arm" or v8_target_arch=="ia32" or \
+         v8_target_arch=="mipsel")', {
+        # Check whether the host compiler and target compiler support the
+        # '-m32' option and set it if so.
+        'target_conditions': [
+          ['_toolset=="host"', {
+            'variables': {
+              'm32flag': '<!((echo | $(echo ${CXX_host:-$(which g++)}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
+            },
+            'cflags': [ '<(m32flag)' ],
+            'ldflags': [ '<(m32flag)' ],
+            'xcode_settings': {
+              'ARCHS': [ 'i386' ],
+            },
+          }],
+          ['_toolset=="target"', {
+            'variables': {
+              'm32flag': '<!((echo | $(echo ${CXX_target:-<(CXX)}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
+              'clang%': 0,
+            },
+            'conditions': [
+              ['(OS!="android" or clang==1) and \
+                nacl_target_arch!="nacl_x64"', {
+                'cflags': [ '<(m32flag)' ],
+                'ldflags': [ '<(m32flag)' ],
+              }],
+            ],
+            'xcode_settings': {
+              'ARCHS': [ 'i386' ],
+            },
+          }],
+        ],
+      }],
+      ['(OS=="linux") and (v8_target_arch=="x64")', {
+        # Check whether the host compiler and target compiler support the
+        # '-m64' option and set it if so.
+        'target_conditions': [
+          ['_toolset=="host"', {
+            'variables': {
+              'm64flag': '<!((echo | $(echo ${CXX_host:-$(which g++)}) -m64 -E - > /dev/null 2>&1) && echo "-m64" || true)',
+            },
+            'cflags': [ '<(m64flag)' ],
+            'ldflags': [ '<(m64flag)' ],
+          }],
+          ['_toolset=="target"', {
+            'variables': {
+              'm64flag': '<!((echo | $(echo ${CXX_target:-<(CXX)}) -m64 -E - > /dev/null 2>&1) && echo "-m64" || true)',
+            },
+            'cflags': [ '<(m64flag)' ],
+            'ldflags': [ '<(m64flag)' ],
+          }]
+        ],
+      }],
+      ['OS=="freebsd" or OS=="openbsd"', {
+        'cflags': [ '-I/usr/local/include' ],
+      }],
+      ['OS=="netbsd"', {
+        'cflags': [ '-I/usr/pkg/include' ],
+      }],
+    ],  # conditions
+    'configurations': {
+      'Debug': {
+        'defines': [
+          'ENABLE_DISASSEMBLER',
+          'V8_ENABLE_CHECKS',
+          'OBJECT_PRINT',
+          'VERIFY_HEAP',
+        ],
+        'msvs_settings': {
+          'VCCLCompilerTool': {
+            'conditions': [
+              ['v8_optimized_debug==0', {
+                'Optimization': '0',
+                'conditions': [
+                  ['component=="shared_library"', {
+                    'RuntimeLibrary': '3',  # /MDd
+                  }, {
+                    'RuntimeLibrary': '1',  # /MTd
+                  }],
+                ],
+              }],
+              ['v8_optimized_debug==1', {
+                'Optimization': '1',
+                'InlineFunctionExpansion': '2',
+                'EnableIntrinsicFunctions': 'true',
+                'FavorSizeOrSpeed': '0',
+                'StringPooling': 'true',
+                'BasicRuntimeChecks': '0',
+                'conditions': [
+                  ['component=="shared_library"', {
+                    'RuntimeLibrary': '3',  # /MDd
+                  }, {
+                    'RuntimeLibrary': '1',  # /MTd
+                  }],
+                ],
+              }],
+              ['v8_optimized_debug==2', {
+                'Optimization': '2',
+                'InlineFunctionExpansion': '2',
+                'EnableIntrinsicFunctions': 'true',
+                'FavorSizeOrSpeed': '0',
+                'StringPooling': 'true',
+                'BasicRuntimeChecks': '0',
+                'conditions': [
+                  ['component=="shared_library"', {
+                    'RuntimeLibrary': '3',  #/MDd
+                  }, {
+                    'RuntimeLibrary': '1',  #/MTd
+                  }],
+                  ['v8_target_arch=="x64"', {
+                    # TODO(2207): remove this option once the bug is fixed.
+                    'WholeProgramOptimization': 'true',
+                  }],
+                ],
+              }],
+            ],
+          },
+          'VCLinkerTool': {
+            'conditions': [
+              ['v8_optimized_debug==0', {
+                'LinkIncremental': '2',
+              }],
+              ['v8_optimized_debug==1', {
+                'LinkIncremental': '2',
+              }],
+              ['v8_optimized_debug==2', {
+                'LinkIncremental': '1',
+                'OptimizeReferences': '2',
+                'EnableCOMDATFolding': '2',
+              }],
+            ],
+          },
+        },
+        'conditions': [
+          ['v8_optimized_debug==2', {
+            'defines': [
+              'NDEBUG',
+            ],
+          }, {
+            'defines': [
+              'DEBUG',
+            ],
+          }],
+          ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
+            'cflags': [ '-Wall', '<(werror)', '-W', '-Wno-unused-parameter',
+                        '-Wnon-virtual-dtor', '-Woverloaded-virtual',
+                        '<(wno_array_bounds)' ],
+            'conditions': [
+              ['v8_optimized_debug==0', {
+                'cflags!': [
+                  '-O0',
+                  '-O3',
+                  '-O2',
+                  '-O1',
+                  '-Os',
+                ],
+                'cflags': [
+                  '-fdata-sections',
+                  '-ffunction-sections',
+                ],
+              }],
+              ['v8_optimized_debug==1', {
+                'cflags!': [
+                  '-O0',
+                  '-O3', # TODO(2807) should be -O1.
+                  '-O2',
+                  '-Os',
+                ],
+                'cflags': [
+                  '-fdata-sections',
+                  '-ffunction-sections',
+                  '-O1', # TODO(2807) should be -O3.
+                ],
+              }],
+              ['v8_optimized_debug==2', {
+                'cflags!': [
+                  '-O0',
+                  '-O1',
+                  '-O2',
+                  '-Os',
+                ],
+                'cflags': [
+                  '-fdata-sections',
+                  '-ffunction-sections',
+                  '-O3',
+                ],
+              }],
+              ['v8_optimized_debug!=0 and gcc_version==44 and clang==0', {
+                'cflags': [
+                  # Avoid crashes with gcc 4.4 in the v8 test suite.
+                  '-fno-tree-vrp',
+                ],
+              }],
+            ],
+          }],
+          ['OS=="linux" and v8_enable_backtrace==1', {
+            # Support for backtrace_symbols.
+            'ldflags': [ '-rdynamic' ],
+          }],
+          ['OS=="android"', {
+            'variables': {
+              'android_full_debug%': 1,
+            },
+            'conditions': [
+              ['android_full_debug==0', {
+                # Disable full debug if we want a faster v8 in a debug build.
+                # TODO(2304): pass DISABLE_DEBUG_ASSERT instead of hiding DEBUG.
+                'defines!': [
+                  'DEBUG',
+                ],
+              }],
+            ],
+          }],
+          ['OS=="mac"', {
+            'xcode_settings': {
+              'conditions': [
+                 ['v8_optimized_debug==0', {
+                   'GCC_OPTIMIZATION_LEVEL': '0',  # -O0
+                 }, {
+                   'GCC_OPTIMIZATION_LEVEL': '3',  # -O3
+                   'GCC_STRICT_ALIASING': 'YES',
+                 }],
+               ],
+            },
+          }],
+        ],
+      },  # Debug
+      'Release': {
+        'conditions': [
+          ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
+            'cflags!': [
+              '-O2',
+              '-Os',
+            ],
+            'cflags': [
+              '-fdata-sections',
+              '-ffunction-sections',
+              '-O3',
+              '<(wno_array_bounds)',
+            ],
+            'conditions': [
+              [ 'gcc_version==44 and clang==0', {
+                'cflags': [
+                  # Avoid crashes with gcc 4.4 in the v8 test suite.
+                  '-fno-tree-vrp',
+                ],
+              }],
+            ],
+          }],
+          ['OS=="android"', {
+            'cflags!': [
+              '-O3',
+              '-Os',
+            ],
+            'cflags': [
+              '-fdata-sections',
+              '-ffunction-sections',
+              '-O2',
+            ],
+            'conditions': [
+              [ 'gcc_version==44 and clang==0', {
+                'cflags': [
+                  # Avoid crashes with gcc 4.4 in the v8 test suite.
+                  '-fno-tree-vrp',
+                ],
+              }],
+            ],
+          }],
+          ['OS=="mac"', {
+            'xcode_settings': {
+              'GCC_OPTIMIZATION_LEVEL': '3',  # -O3
+
+              # -fstrict-aliasing.  Mainline gcc
+              # enables this at -O2 and above,
+              # but Apple gcc does not unless it
+              # is specified explicitly.
+              'GCC_STRICT_ALIASING': 'YES',
+            },
+          }],  # OS=="mac"
+          ['OS=="win"', {
+            'msvs_settings': {
+              'VCCLCompilerTool': {
+                'Optimization': '2',
+                'InlineFunctionExpansion': '2',
+                'EnableIntrinsicFunctions': 'true',
+                'FavorSizeOrSpeed': '0',
+                'StringPooling': 'true',
+                'conditions': [
+                  ['component=="shared_library"', {
+                    'RuntimeLibrary': '2',  #/MD
+                  }, {
+                    'RuntimeLibrary': '0',  #/MT
+                  }],
+                  ['v8_target_arch=="x64"', {
+                    # TODO(2207): remove this option once the bug is fixed.
+                    'WholeProgramOptimization': 'true',
+                  }],
+                ],
+              },
+              'VCLinkerTool': {
+                'LinkIncremental': '1',
+                'OptimizeReferences': '2',
+                'EnableCOMDATFolding': '2',
+              },
+            },
+          }],  # OS=="win"
+        ],  # conditions
+      },  # Release
+    },  # configurations
+  },  # target_defaults
+}