The Tor Browser: media/webrtc/trunk/build/common.gypi@ac0c01689b40 (annotated)

media/webrtc/trunk/build/common.gypi@ac0c01689b40 (annotated)

media/webrtc/trunk/build/common.gypi

Thu, 15 Jan 2015 15:59:08 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 15 Jan 2015 15:59:08 +0100
branch: TOR_BUG_9701
changeset 10: ac0c01689b40
permissions: -rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 # Copyright (c) 2012 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.
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
   'variables': {
     # Putting a variables dict inside another variables dict looks kind of
     # weird.  This is done so that 'host_arch', 'chromeos', etc are defined as
     # variables within the outer variables dict here.  This is necessary
     # to get these variables defined for the conditions within this variables
     # dict that operate on these variables.
     'variables': {
       'variables': {
         'variables': {
           'variables': {
             # Whether we're building a ChromeOS build.
             'chromeos%': 0,
             # Whether or not we are using the Aura windowing framework.
             'use_aura%': 0,
             # Whether or not we are building the Ash shell.
             'use_ash%': 0,
           },
           # Copy conditionally-set variables out one scope.
           'chromeos%': '<(chromeos)',
           'use_aura%': '<(use_aura)',
           'use_ash%': '<(use_ash)',
           # Whether we are using Views Toolkit
           'toolkit_views%': 0,
           # Use OpenSSL instead of NSS. Under development: see http://crbug.com/62803
           'use_openssl%': 0,
           'use_ibus%': 0,
           # Disable viewport meta tag by default.
           'enable_viewport%': 0,
           # Enable HiDPI support.
           'enable_hidpi%': 0,
           # Enable touch optimized art assets and metrics.
           'enable_touch_ui%': 0,
           # Is this change part of the android upstream bringup?
           # Allows us to *temporarily* disable certain things for
           # staging.  Only set to 1 in a GYP_DEFINES.
           'android_upstream_bringup%': 0,
           # Override buildtype to select the desired build flavor.
           # Dev - everyday build for development/testing
           # Official - release build (generally implies additional processing)
           # TODO(mmoss) Once 'buildtype' is fully supported (e.g. Windows gyp
           # conversion is done), some of the things which are now controlled by
           # 'branding', such as symbol generation, will need to be refactored
           # based on 'buildtype' (i.e. we don't care about saving symbols for
           # non-Official # builds).
           'buildtype%': 'Dev',
           'conditions': [
             # ChromeOS implies ash.
             ['chromeos==1', {
               'use_ash%': 1,
               'use_aura%': 1,
             }],
             # For now, Windows builds that |use_aura| should also imply using
             # ash. This rule should be removed for the future when Windows is
             # using the aura windows without the ash interface.
             ['use_aura==1 and OS=="win"', {
               'use_ash%': 1,
             }],
             ['use_ash==1', {
               'use_aura%': 1,
             }],
             # A flag for BSD platforms
             ['OS=="dragonfly" or OS=="freebsd" or OS=="netbsd" or \
               OS=="openbsd"', {
               'os_bsd%': 1,
             }, {
               'os_bsd%': 0,
             }],
           ],
         },
         # Copy conditionally-set variables out one scope.
         'chromeos%': '<(chromeos)',
         'use_aura%': '<(use_aura)',
         'use_ash%': '<(use_ash)',
         'os_bsd%': '<(os_bsd)',
         'use_openssl%': '<(use_openssl)',
         'use_ibus%': '<(use_ibus)',
         'enable_viewport%': '<(enable_viewport)',
         'enable_hidpi%': '<(enable_hidpi)',
         'enable_touch_ui%': '<(enable_touch_ui)',
         'android_upstream_bringup%': '<(android_upstream_bringup)',
         'buildtype%': '<(buildtype)',
         # Sets whether we're building with the Android SDK/NDK (and hence with
         # Ant, value 0), or as part of the Android system (and hence with the
         # Android build system, value 1).
         'android_build_type%': 0,
         # Compute the architecture that we're building on.
         'conditions': [
           ['OS=="win" or OS=="ios"', {
             'host_arch%': 'ia32',
           }, {
             # This handles the Unix platforms for which there is some support.
             # 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/i86pc/ia32/")',
           }],
           # Set default value of toolkit_views based on OS.
           ['OS=="win" or chromeos==1 or use_aura==1', {
             'toolkit_views%': 1,
           }, {
             'toolkit_views%': 0,
           }],
           # Set toolkit_uses_gtk for the Chromium browser on Linux.
           ['(OS=="linux" or OS=="solaris" or os_bsd==1) and use_aura==0', {
             'toolkit_uses_gtk%': 1,
           }, {
             'toolkit_uses_gtk%': 0,
           }],
           # Enable HiDPI on Mac OS and Chrome OS.
           ['OS=="mac" or chromeos==1', {
             'enable_hidpi%': 1,
           }],
           # Enable touch UI on Metro.
           ['OS=="win"', {
             'enable_touch_ui%': 1,
           }],
         ],
       },
       # Copy conditionally-set variables out one scope.
       'chromeos%': '<(chromeos)',
       'host_arch%': '<(host_arch)',
       'toolkit_views%': '<(toolkit_views)',
       'toolkit_uses_gtk%': '<(toolkit_uses_gtk)',
       'use_aura%': '<(use_aura)',
       'use_ash%': '<(use_ash)',
       'os_bsd%': '<(os_bsd)',
       'use_openssl%': '<(use_openssl)',
       'use_ibus%': '<(use_ibus)',
       'enable_viewport%': '<(enable_viewport)',
       'enable_hidpi%': '<(enable_hidpi)',
       'enable_touch_ui%': '<(enable_touch_ui)',
       'android_upstream_bringup%': '<(android_upstream_bringup)',
       'android_build_type%': '<(android_build_type)',
       # We used to provide a variable for changing how libraries were built.
       # This variable remains until we can clean up all the users.
       # This needs to be one nested variables dict in so that dependent
       # gyp files can make use of it in their outer variables.  (Yikes!)
       # http://code.google.com/p/chromium/issues/detail?id=83308
       'library%': 'static_library',
       # Override branding to select the desired branding flavor.
       'branding%': 'Chromium',
       'buildtype%': '<(buildtype)',
       # Default architecture we're building for is the architecture we're
       # building on.
       'target_arch%': '<(host_arch)',
       # This variable tells WebCore.gyp and JavaScriptCore.gyp whether they are
       # are built under a chromium full build (1) or a webkit.org chromium
       # build (0).
       'inside_chromium_build%': 1,
       # Set to 1 to enable fast builds. It disables debug info for fastest
       # compilation.
       'fastbuild%': 0,
       # Set to 1 to enable dcheck in release without having to use the flag.
       'dcheck_always_on%': 0,
       # Disable file manager component extension by default.
       'file_manager_extension%': 0,
       # Python version.
       'python_ver%': '2.6',
       # Set ARM version (for libyuv)
       'arm_version%': 6,
       # Set ARM-v7 compilation flags
       'armv7%': 0,
       # Set Neon compilation flags (only meaningful if armv7==1).
       'arm_neon%': 1,
       'arm_neon_optional%': 0,
       # The system root for cross-compiles. Default: none.
       'sysroot%': '',
       # The system libdir used for this ABI.
       'system_libdir%': 'lib',
       # On Linux, we build with sse2 for Chromium builds.
       'disable_sse2%': 0,
       # Use libjpeg-turbo as the JPEG codec used by Chromium.
       'use_libjpeg_turbo%': 1,
       # Use system libjpeg. Note that the system's libjepg will be used even if
       # use_libjpeg_turbo is set.
       'use_system_libjpeg%': 0,
       # Use system libvpx
       'use_system_libvpx%': 0,
       # Variable 'component' is for cases where we would like to build some
       # components as dynamic shared libraries but still need variable
       # 'library' for static libraries.
       # By default, component is set to whatever library is set to and
       # it can be overriden by the GYP command line or by ~/.gyp/include.gypi.
       'component%': 'static_library',
       # Set to select the Title Case versions of strings in GRD files.
       'use_titlecase_in_grd_files%': 0,
       # Use translations provided by volunteers at launchpad.net.  This
       # currently only works on Linux.
       'use_third_party_translations%': 0,
       # Remoting compilation is enabled by default. Set to 0 to disable.
       'remoting%': 1,
       # Configuration policy is enabled by default. Set to 0 to disable.
       'configuration_policy%': 1,
       # Safe browsing is compiled in by default. Set to 0 to disable.
       'safe_browsing%': 1,
       # Speech input is compiled in by default. Set to 0 to disable.
       'input_speech%': 1,
       # Notifications are compiled in by default. Set to 0 to disable.
       'notifications%' : 1,
       # If this is set, the clang plugins used on the buildbot will be used.
       # Run tools/clang/scripts/update.sh to make sure they are compiled.
       # This causes 'clang_chrome_plugins_flags' to be set.
       # Has no effect if 'clang' is not set as well.
       'clang_use_chrome_plugins%': 1,
       # Enable building with ASAN (Clang's -faddress-sanitizer option).
       # -faddress-sanitizer only works with clang, but asan=1 implies clang=1
       # See https://sites.google.com/a/chromium.org/dev/developers/testing/addresssanitizer
       'asan%': 0,
       # Enable building with TSAN (Clang's -fthread-sanitizer option).
       # -fthread-sanitizer only works with clang, but tsan=1 implies clang=1
       # See http://clang.llvm.org/docs/ThreadSanitizer.html
       'tsan%': 0,
       # Use a modified version of Clang to intercept allocated types and sizes
       # for allocated objects. clang_type_profiler=1 implies clang=1.
       # See http://dev.chromium.org/developers/deep-memory-profiler/cpp-object-type-identifier
       # TODO(dmikurube): Support mac.  See http://crbug.com/123758#c11
       'clang_type_profiler%': 0,
       # Set to true to instrument the code with function call logger.
       # See src/third_party/cygprofile/cyg-profile.cc for details.
       'order_profiling%': 0,
       # Use the provided profiled order file to link Chrome image with it.
       # This makes Chrome faster by better using CPU cache when executing code.
       # This is known as PGO (profile guided optimization).
       # See https://sites.google.com/a/google.com/chrome-msk/dev/boot-speed-up-effort
       'order_text_section%' : "",
       # Set to 1 compile with -fPIC cflag on linux. This is a must for shared
       # libraries on linux x86-64 and arm, plus ASLR.
       'linux_fpic%': 1,
       # Whether one-click signin is enabled or not.
       'enable_one_click_signin%': 0,
       # Enable Web Intents support in WebKit.
       'enable_web_intents%': 1,
       # Enable Chrome browser extensions
       'enable_extensions%': 1,
       # Enable browser automation.
       'enable_automation%': 1,
       # Enable printing support and UI.
       'enable_printing%': 1,
       # Enable Web Intents web content registration via HTML element
       # and WebUI managing such registrations.
       'enable_web_intents_tag%': 0,
       # Webrtc compilation is enabled by default. Set to 0 to disable.
       'enable_webrtc%': 1,
       # PPAPI by default does not support plugins making calls off the main
       # thread. Set to 1 to turn on experimental support for out-of-process
       # plugins to make call of the main thread.
       'enable_pepper_threading%': 0,
       # Enables use of the session service, which is enabled by default.
       # Support for disabling depends on the platform.
       'enable_session_service%': 1,
       # Enables theme support, which is enabled by default.  Support for
       # disabling depends on the platform.
       'enable_themes%': 1,
       # Uses OEM-specific wallpaper resources on Chrome OS.
       'use_oem_wallpaper%': 0,
       # Enables support for background apps.
       'enable_background%': 1,
       # Enable the task manager by default.
       'enable_task_manager%': 1,
       # Enable FTP support by default.
       'disable_ftp_support%': 0,
       # XInput2 multitouch support is disabled by default (use_xi2_mt=0).
       # Setting to non-zero value enables XI2 MT. When XI2 MT is enabled,
       # the input value also defines the required XI2 minor minimum version.
       # For example, use_xi2_mt=2 means XI2.2 or above version is required.
       'use_xi2_mt%': 0,
       # Use of precompiled headers on Windows.
       #
       # This is on by default in VS 2010, but off by default for VS
       # 2008 because of complications that it can cause with our
       # trybots etc.
       #
       # This variable may be explicitly set to 1 (enabled) or 0
       # (disabled) in ~/.gyp/include.gypi or via the GYP command line.
       # This setting will override the default.
       #
       # Note that a setting of 1 is probably suitable for most or all
       # Windows developers using VS 2008, since precompiled headers
       # provide a build speedup of 20-25%.  There are a couple of
       # small workarounds you may need to use when using VS 2008 (but
       # not 2010), see
       # http://code.google.com/p/chromium/wiki/WindowsPrecompiledHeaders
       # for details.
       'chromium_win_pch%': 0,
       # Set this to true when building with Clang.
       # See http://code.google.com/p/chromium/wiki/Clang for details.
       'clang%': 0,
       # Enable plug-in installation by default.
       'enable_plugin_installation%': 1,
       # Enable protector service by default.
       'enable_protector_service%': 1,
       # Specifies whether to use canvas_skia.cc in place of platform
       # specific implementations of gfx::Canvas. Affects text drawing in the
       # Chrome UI.
       # TODO(asvitkine): Enable this on all platforms and delete this flag.
       #                  http://crbug.com/105550
       'use_canvas_skia%': 0,
       # Set to "tsan", "memcheck", or "drmemory" to configure the build to work
       # with one of those tools.
       'build_for_tool%': '',
       # Whether tests targets should be run, archived or just have the
       # dependencies verified. All the tests targets have the '_run' suffix,
       # e.g. base_unittests_run runs the target base_unittests. The test target
       # always calls tools/swarm_client/isolate.py. See the script's --help for
       # more information and the valid --mode values. Meant to be overriden with
       # GYP_DEFINES.
       # TODO(maruel): Converted the default from 'check' to 'noop' so work can
       # be done while the builders are being reconfigured to check out test data
       # files.
       'test_isolation_mode%': 'noop',
       # It must not be '<(PRODUCT_DIR)' alone, the '/' is necessary otherwise
       # gyp will remove duplicate flags, causing isolate.py to be confused.
       'test_isolation_outdir%': '<(PRODUCT_DIR)/isolate',
        # Force rlz to use chrome's networking stack.
       'force_rlz_use_chrome_net%': 1,
       'sas_dll_path%': '<(DEPTH)/third_party/platformsdk_win7/files/redist/x86',
       'wix_path%': '<(DEPTH)/third_party/wix',
       'conditions': [
         # TODO(epoger): Figure out how to set use_skia=1 for Mac outside of
         # the 'conditions' clause.  Initial attempts resulted in chromium and
         # webkit disagreeing on its setting.
         ['OS=="mac"', {
           'use_skia%': 1,
         }, {
           'use_skia%': 1,
         }],
         # A flag for POSIX platforms
         ['OS=="win"', {
           'os_posix%': 0,
         }, {
           'os_posix%': 1,
         }],
         # NSS usage.
         ['(OS=="linux" or OS=="solaris" or os_bsd==1) and use_openssl==0', {
           'use_nss%': 1,
         }, {
           'use_nss%': 0,
         }],
         # Flags to use X11 on non-Mac POSIX platforms
         ['OS=="win" or OS=="mac" or OS=="ios" or OS=="android"', {
           'use_glib%': 0,
           'use_x11%': 0,
         }, {
           'use_glib%': 1,
           'use_x11%': 1,
         }],
         # We always use skia text rendering in Aura on Windows, since GDI
         # doesn't agree with our BackingStore.
         # TODO(beng): remove once skia text rendering is on by default.
         ['use_aura==1 and OS=="win"', {
           'enable_skia_text%': 1,
         }],
         # A flag to enable or disable our compile-time dependency
         # on gnome-keyring. If that dependency is disabled, no gnome-keyring
         # support will be available. This option is useful
         # for Linux distributions and for Aura.
         ['chromeos==1 or use_aura==1', {
           'use_gnome_keyring%': 0,
         }, {
           'use_gnome_keyring%': 1,
         }],
         ['toolkit_uses_gtk==1 or OS=="mac" or OS=="ios"', {
           # GTK+, Mac and iOS want Title Case strings
           'use_titlecase_in_grd_files%': 1,
         }],
         # Enable file manager extension on Chrome OS.
         ['chromeos==1', {
           'file_manager_extension%': 1,
         }, {
           'file_manager_extension%': 0,
         }],
         ['OS=="win" or OS=="mac" or (OS=="linux" and use_aura==0)', {
           'enable_one_click_signin%': 1,
         }],
         ['OS=="android"', {
           'enable_extensions%': 0,
           'enable_printing%': 0,
           'enable_themes%': 0,
           'enable_webrtc%': 0,
           'proprietary_codecs%': 1,
           'remoting%': 0,
         }],
         ['OS=="ios"', {
           'configuration_policy%': 0,
           'disable_ftp_support%': 1,
           'enable_automation%': 0,
           'enable_extensions%': 0,
           'enable_printing%': 0,
           'enable_themes%': 0,
           'enable_webrtc%': 0,
           'notifications%': 0,
           'remoting%': 0,
         }],
         # Use GPU accelerated cross process image transport by default
         # on linux builds with the Aura window manager
         ['use_aura==1 and OS=="linux"', {
           'ui_compositor_image_transport%': 1,
         }, {
           'ui_compositor_image_transport%': 0,
         }],
         # Turn precompiled headers on by default for VS 2010.
         ['OS=="win" and MSVS_VERSION=="2010" and buildtype!="Official"', {
           'chromium_win_pch%': 1
         }],
         ['use_aura==1 or chromeos==1 or OS=="android"', {
           'enable_plugin_installation%': 0,
         }, {
           'enable_plugin_installation%': 1,
         }],
         ['OS=="android" or OS=="ios"', {
           'enable_protector_service%': 0,
         }, {
           'enable_protector_service%': 1,
         }],
         # linux_use_gold_binary: whether to use the binary checked into
         # third_party/gold.
         ['OS=="linux"', {
           'linux_use_gold_binary%': 1,
         }, {
           'linux_use_gold_binary%': 0,
         }],
         # linux_use_gold_flags: whether to use build flags that rely on gold.
         # On by default for x64 Linux.  Temporarily off for ChromeOS as
         # it failed on a buildbot.
         ['OS=="linux" and chromeos==0', {
           'linux_use_gold_flags%': 1,
         }, {
           'linux_use_gold_flags%': 0,
         }],
         ['OS=="android"', {
           'enable_captive_portal_detection%': 0,
         }, {
           'enable_captive_portal_detection%': 1,
         }],
         # Enable Skia UI text drawing incrementally on different platforms.
         # http://crbug.com/105550
         #
         # On Aura, this allows per-tile painting to be used in the browser
         # compositor.
         ['OS!="mac" and OS!="android"', {
           'use_canvas_skia%': 1,
         }],
         ['chromeos==1', {
           # When building for ChromeOS we dont want Chromium to use libjpeg_turbo.
           'use_libjpeg_turbo%': 0,
         }],
         ['OS=="android"', {
           # When building as part of the Android system, use system libraries
           # where possible to reduce ROM size.
           'use_system_libjpeg%': '<(android_build_type)',
         }],
       ],
       # Set this to 1 to use the Google-internal file containing
       # official API keys for Google Chrome even in a developer build.
       # Setting this variable explicitly to 1 will cause your build to
       # fail if the internal file is missing.
       #
       # Set this to 0 to not use the internal file, even when it
       # exists in your checkout.
       #
       # Leave set to 2 to have this variable implicitly set to 1 if
       # you have src/google_apis/internal/google_chrome_api_keys.h in
       # your checkout, and implicitly set to 0 if not.
       #
       # Note that official builds always behave as if this variable
       # was explicitly set to 1, i.e. they always use official keys,
       # and will fail to build if the internal file is missing.
       'use_official_google_api_keys%': 2,
       # Set these to bake the specified API keys and OAuth client
       # IDs/secrets into your build.
       #
       # If you create a build without values baked in, you can instead
       # set environment variables to provide the keys at runtime (see
       # src/google_apis/google_api_keys.h for details).  Features that
       # require server-side APIs may fail to work if no keys are
       # provided.
       #
       # Note that if you are building an official build or if
       # use_official_google_api_keys has been set to 1 (explicitly or
       # implicitly), these values will be ignored and the official
       # keys will be used instead.
       'google_api_key%': '',
       'google_default_client_id%': '',
       'google_default_client_secret%': '',
     },
     # Copy conditionally-set variables out one scope.
     'branding%': '<(branding)',
     'buildtype%': '<(buildtype)',
     'target_arch%': '<(target_arch)',
     'host_arch%': '<(host_arch)',
     'library%': 'static_library',
     'toolkit_views%': '<(toolkit_views)',
     'ui_compositor_image_transport%': '<(ui_compositor_image_transport)',
     'use_aura%': '<(use_aura)',
     'use_ash%': '<(use_ash)',
     'use_openssl%': '<(use_openssl)',
     'use_ibus%': '<(use_ibus)',
     'use_nss%': '<(use_nss)',
     'os_bsd%': '<(os_bsd)',
     'os_posix%': '<(os_posix)',
     'use_glib%': '<(use_glib)',
     'toolkit_uses_gtk%': '<(toolkit_uses_gtk)',
     'use_skia%': '<(use_skia)',
     'use_x11%': '<(use_x11)',
     'use_gnome_keyring%': '<(use_gnome_keyring)',
     'linux_fpic%': '<(linux_fpic)',
     'enable_pepper_threading%': '<(enable_pepper_threading)',
     'chromeos%': '<(chromeos)',
     'enable_viewport%': '<(enable_viewport)',
     'enable_hidpi%': '<(enable_hidpi)',
     'enable_touch_ui%': '<(enable_touch_ui)',
     'use_xi2_mt%':'<(use_xi2_mt)',
     'file_manager_extension%': '<(file_manager_extension)',
     'inside_chromium_build%': '<(inside_chromium_build)',
     'fastbuild%': '<(fastbuild)',
     'dcheck_always_on%': '<(dcheck_always_on)',
     'python_ver%': '<(python_ver)',
     'arm_version%': '<(arm_version)',
     'armv7%': '<(armv7)',
     'arm_neon%': '<(arm_neon)',
     'arm_neon_optional%': '<(arm_neon_optional)',
     'sysroot%': '<(sysroot)',
     'system_libdir%': '<(system_libdir)',
     'component%': '<(component)',
     'use_titlecase_in_grd_files%': '<(use_titlecase_in_grd_files)',
     'use_third_party_translations%': '<(use_third_party_translations)',
     'remoting%': '<(remoting)',
     'enable_one_click_signin%': '<(enable_one_click_signin)',
     'enable_webrtc%': '<(enable_webrtc)',
     'chromium_win_pch%': '<(chromium_win_pch)',
     'configuration_policy%': '<(configuration_policy)',
     'safe_browsing%': '<(safe_browsing)',
     'input_speech%': '<(input_speech)',
     'notifications%': '<(notifications)',
     'clang_use_chrome_plugins%': '<(clang_use_chrome_plugins)',
     'asan%': '<(asan)',
     'tsan%': '<(tsan)',
     'clang_type_profiler%': '<(clang_type_profiler)',
     'order_profiling%': '<(order_profiling)',
     'order_text_section%': '<(order_text_section)',
     'enable_extensions%': '<(enable_extensions)',
     'enable_web_intents%': '<(enable_web_intents)',
     'enable_web_intents_tag%': '<(enable_web_intents_tag)',
     'enable_plugin_installation%': '<(enable_plugin_installation)',
     'enable_protector_service%': '<(enable_protector_service)',
     'enable_session_service%': '<(enable_session_service)',
     'enable_themes%': '<(enable_themes)',
     'use_oem_wallpaper%': '<(use_oem_wallpaper)',
     'enable_background%': '<(enable_background)',
     'linux_use_gold_binary%': '<(linux_use_gold_binary)',
     'linux_use_gold_flags%': '<(linux_use_gold_flags)',
     'use_canvas_skia%': '<(use_canvas_skia)',
     'test_isolation_mode%': '<(test_isolation_mode)',
     'test_isolation_outdir%': '<(test_isolation_outdir)',
     'enable_automation%': '<(enable_automation)',
     'enable_printing%': '<(enable_printing)',
     'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
     'disable_ftp_support%': '<(disable_ftp_support)',
     'force_rlz_use_chrome_net%': '<(force_rlz_use_chrome_net)',
     'enable_task_manager%': '<(enable_task_manager)',
     'sas_dll_path%': '<(sas_dll_path)',
     'wix_path%': '<(wix_path)',
     'android_upstream_bringup%': '<(android_upstream_bringup)',
     'use_libjpeg_turbo%': '<(use_libjpeg_turbo)',
     'use_system_libjpeg%': '<(use_system_libjpeg)',
     'android_build_type%': '<(android_build_type)',
     'use_official_google_api_keys%': '<(use_official_google_api_keys)',
     'google_api_key%': '<(google_api_key)',
     'google_default_client_id%': '<(google_default_client_id)',
     'google_default_client_secret%': '<(google_default_client_secret)',
     # Use system yasm instead of bundled one.
     'use_system_yasm%': 0,
     # Default to enabled PIE; this is important for ASLR but we may need to be
     # able to turn it off for various reasons.
     'linux_disable_pie%': 0,
     # The release channel that this build targets. This is used to restrict
     # channel-specific build options, like which installer packages to create.
     # The default is 'all', which does no channel-specific filtering.
     'channel%': 'all',
     # Override chromium_mac_pch and set it to 0 to suppress the use of
     # precompiled headers on the Mac.  Prefix header injection may still be
     # used, but prefix headers will not be precompiled.  This is useful when
     # using distcc to distribute a build to compile slaves that don't
     # share the same compiler executable as the system driving the compilation,
     # because precompiled headers rely on pointers into a specific compiler
     # executable's image.  Setting this to 0 is needed to use an experimental
     # Linux-Mac cross compiler distcc farm.
     'chromium_mac_pch%': 1,
     # The default value for mac_strip in target_defaults. This cannot be
     # set there, per the comment about variable% in a target_defaults.
     'mac_strip_release%': 1,
     # Set to 1 to enable code coverage.  In addition to build changes
     # (e.g. extra CFLAGS), also creates a new target in the src/chrome
     # project file called "coverage".
     # Currently ignored on Windows.
     'coverage%': 0,
     # Set to 1 to force Visual C++ to use legacy debug information format /Z7.
     # This is useful for parallel compilation tools which can't support /Zi.
     # Only used on Windows.
     'win_z7%' : 0,
     # Although base/allocator lets you select a heap library via an
     # environment variable, the libcmt shim it uses sometimes gets in
     # the way.  To disable it entirely, and switch to normal msvcrt, do e.g.
     #  'win_use_allocator_shim': 0,
     #  'win_release_RuntimeLibrary': 2
     # to ~/.gyp/include.gypi, gclient runhooks --force, and do a release build.
     'win_use_allocator_shim%': 1, # 1 = shim allocator via libcmt; 0 = msvcrt
     # Whether usage of OpenMAX is enabled.
     'enable_openmax%': 0,
     # Whether proprietary audio/video codecs are assumed to be included with
     # this build (only meaningful if branding!=Chrome).
     'proprietary_codecs%': 0,
     # TODO(bradnelson): eliminate this when possible.
     # To allow local gyp files to prevent release.vsprops from being included.
     # Yes(1) means include release.vsprops.
     # Once all vsprops settings are migrated into gyp, this can go away.
     'msvs_use_common_release%': 1,
     # TODO(bradnelson): eliminate this when possible.
     # To allow local gyp files to override additional linker options for msvs.
     # Yes(1) means set use the common linker options.
     'msvs_use_common_linker_extras%': 1,
     # TODO(sgk): eliminate this if possible.
     # It would be nicer to support this via a setting in 'target_defaults'
     # in chrome/app/locales/locales.gypi overriding the setting in the
     # 'Debug' configuration in the 'target_defaults' dict below,
     # but that doesn't work as we'd like.
     'msvs_debug_link_incremental%': '2',
     # Needed for some of the largest modules.
     'msvs_debug_link_nonincremental%': '1',
     # Turns on Use Library Dependency Inputs for linking chrome.dll on Windows
     # to get incremental linking to be faster in debug builds.
     'incremental_chrome_dll%': '0',
     # The default settings for third party code for treating
     # warnings-as-errors. Ideally, this would not be required, however there
     # is some third party code that takes a long time to fix/roll. So, this
     # flag allows us to have warnings as errors in general to prevent
     # regressions in most modules, while working on the bits that are
     # remaining.
     'win_third_party_warn_as_error%': 'true',
     # This is the location of the sandbox binary. Chrome looks for this before
     # running the zygote process. If found, and SUID, it will be used to
     # sandbox the zygote process and, thus, all renderer processes.
     'linux_sandbox_path%': '',
     # Set this to true to enable SELinux support.
     'selinux%': 0,
     # Clang stuff.
     'clang%': '<(clang)',
     'make_clang_dir%': 'third_party/llvm-build/Release+Asserts',
     # These two variables can be set in GYP_DEFINES while running
     # |gclient runhooks| to let clang run a plugin in every compilation.
     # Only has an effect if 'clang=1' is in GYP_DEFINES as well.
     # Example:
     #     GYP_DEFINES='clang=1 clang_load=/abs/path/to/libPrintFunctionNames.dylib clang_add_plugin=print-fns' gclient runhooks
     'clang_load%': '',
     'clang_add_plugin%': '',
     # The default type of gtest.
     'gtest_target_type%': 'executable',
     # Enable sampling based profiler.
     # See http://google-perftools.googlecode.com/svn/trunk/doc/cpuprofile.html
     'profiling%': '0',
     # Enable strict glibc debug mode.
     'glibcxx_debug%': 0,
     # Override whether we should use Breakpad on Linux. I.e. for Chrome bot.
     'linux_breakpad%': 0,
     # And if we want to dump symbols for Breakpad-enabled builds.
     'linux_dump_symbols%': 0,
     # And if we want to strip the binary after dumping symbols.
     'linux_strip_binary%': 0,
     # Strip the test binaries needed for Linux reliability tests.
     'linux_strip_reliability_tests%': 0,
     # Enable TCMalloc.
     'linux_use_tcmalloc%': 1,
     # Disable TCMalloc's debugallocation.
     'linux_use_debugallocation%': 0,
     # Disable TCMalloc's heapchecker.
     'linux_use_heapchecker%': 0,
     # Disable shadow stack keeping used by heapcheck to unwind the stacks
     # better.
     'linux_keep_shadow_stacks%': 0,
     # Set to 1 to link against libgnome-keyring instead of using dlopen().
     'linux_link_gnome_keyring%': 0,
     # Set to 1 to link against gsettings APIs instead of using dlopen().
     'linux_link_gsettings%': 0,
     # Set Thumb compilation flags.
     'arm_thumb%': 0,
     # Set ARM fpu compilation flags (only meaningful if armv7==1 and
     # arm_neon==0).
     'arm_fpu%': 'vfpv3',
     # Set ARM float abi compilation flag.
     'arm_float_abi%': 'softfp',
     # Enable new NPDevice API.
     'enable_new_npdevice_api%': 0,
     # Enable EGLImage support in OpenMAX
     'enable_eglimage%': 1,
     # Enable a variable used elsewhere throughout the GYP files to determine
     # whether to compile in the sources for the GPU plugin / process.
     'enable_gpu%': 1,
     # .gyp files or targets should set chromium_code to 1 if they build
     # Chromium-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.
     'chromium_code%': 0,
     'release_valgrind_build%': 0,
     # TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
     'enable_wexit_time_destructors%': 0,
     # Set to 1 to compile with the built in pdf viewer.
     'internal_pdf%': 0,
     # Set to 1 to compile with the OpenGL ES 2.0 conformance tests.
     'internal_gles2_conform_tests%': 0,
     # NOTE: When these end up in the Mac bundle, we need to replace '-' for '_'
     # so Cocoa is happy (http://crbug.com/20441).
     'locales': [
       'am', 'ar', 'bg', 'bn', 'ca', 'cs', 'da', 'de', 'el', 'en-GB',
       'en-US', 'es-419', 'es', 'et', 'fa', 'fi', 'fil', 'fr', 'gu', 'he',
       'hi', 'hr', 'hu', 'id', 'it', 'ja', 'kn', 'ko', 'lt', 'lv',
       'ml', 'mr', 'ms', 'nb', 'nl', 'pl', 'pt-BR', 'pt-PT', 'ro', 'ru',
       'sk', 'sl', 'sr', 'sv', 'sw', 'ta', 'te', 'th', 'tr', 'uk',
       'vi', 'zh-CN', 'zh-TW',
     ],
     # Pseudo locales are special locales which are used for testing and
     # debugging. They don't get copied to the final app. For more info,
     # check out https://sites.google.com/a/chromium.org/dev/Home/fake-bidi
     'pseudo_locales': [
       'fake-bidi',
     ],
     'grit_defines': [],
     # If debug_devtools is set to 1, JavaScript files for DevTools are
     # stored as is and loaded from disk. Otherwise, a concatenated file
     # is stored in resources.pak. It is still possible to load JS files
     # from disk by passing --debug-devtools cmdline switch.
     'debug_devtools%': 0,
     # The Java Bridge is not compiled in by default.
     'java_bridge%': 0,
     # Code signing for iOS binaries.  The bots need to be able to disable this.
     'chromium_ios_signing%': 1,
     # This flag is only used when disable_nacl==0 and disables all those
     # subcomponents which would require the installation of a native_client
     # untrusted toolchain.
     'disable_nacl_untrusted%': 0,
     # Disable Dart by default.
     'enable_dart%': 0,
     # The desired version of Windows SDK can be set in ~/.gyp/include.gypi.
     'msbuild_toolset%': '',
     # Native Client is enabled by default.
     'disable_nacl%': 0,
     # Whether to build full debug version for Debug configuration on Android.
     # Compared to full debug version, the default Debug configuration on Android
     # has no full v8 debug, has size optimization and linker gc section, so that
     # we can build a debug version with acceptable size and performance.
     'android_full_debug%': 0,
     # Sets the default version name and code for Android app, by default we
     # do a developer build.
     'android_app_version_name%': 'Developer Build',
     'android_app_version_code%': 0,
     'sas_dll_exists': '<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(sas_dll_path))',
     'wix_exists': '<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(wix_path))',
     'windows_sdk_default_path': '<(DEPTH)/third_party/platformsdk_win8/files',
     'directx_sdk_default_path': '<(DEPTH)/third_party/directxsdk/files',
     'conditions': [
       ['"<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(windows_sdk_default_path))"=="True"', {
         'windows_sdk_path%': '<(windows_sdk_default_path)',
       }, {
         'windows_sdk_path%': 'C:/Program Files (x86)/Windows Kits/8.0',
       }],
       ['OS=="win" and "<!(<(PYTHON) <(DEPTH)/build/dir_exists.py <(directx_sdk_default_path))"=="True"', {
         'directx_sdk_path%': '<(directx_sdk_default_path)',
       }, {
         'directx_sdk_path%': '$(DXSDK_DIR)',
       }],
       # If use_official_google_api_keys is already set (to 0 or 1), we
       # do none of the implicit checking.  If it is set to 1 and the
       # internal keys file is missing, the build will fail at compile
       # time.  If it is set to 0 and keys are not provided by other
       # means, a warning will be printed at compile time.
       ['use_official_google_api_keys==2', {
         'use_official_google_api_keys%':
             '<!(<(PYTHON) <(DEPTH)/google_apis/build/check_internal.py <(DEPTH)/google_apis/internal/google_chrome_api_keys.h)',
       }],
       ['os_posix==1 and OS!="mac" and OS!="ios"', {
         # Figure out the python architecture to decide if we build pyauto.
 	# disabled for mozilla because windows != mac and this runs a shell script
 	#        'python_arch%': '<!(<(DEPTH)/build/linux/python_arch.sh <(sysroot)/usr/<(system_libdir)/libpython<(python_ver).so.1.0)',
         'conditions': [
           # TODO(glider): set clang to 1 earlier for ASan and TSan builds so
           # that it takes effect here.
           # disabled for Mozilla since it doesn't use this, and 'msys' messes $(CXX) up
           ['build_with_mozilla==0 and clang==0 and asan==0 and tsan==0', {
             # This will set gcc_version to XY if you are running gcc X.Y.*.
             'gcc_version%': '<!(<(PYTHON) <(DEPTH)/build/compiler_version.py)',
           }, {
             'gcc_version%': 0,
           }],
           ['branding=="Chrome"', {
             'linux_breakpad%': 1,
           }],
           # All Chrome builds have breakpad symbols, but only process the
           # symbols from official builds.
           ['(branding=="Chrome" and buildtype=="Official")', {
             'linux_dump_symbols%': 1,
           }],
         ],
       }],  # os_posix==1 and OS!="mac" and OS!="ios"
       ['OS=="ios"', {
         'disable_nacl%': 1,
         'enable_gpu%': 0,
         'icu_use_data_file_flag%': 1,
         'use_system_bzip2%': 1,
         'use_system_libxml%': 1,
         'use_system_sqlite%': 1,
         # The Mac SDK is set for iOS builds and passed through to Mac
         # sub-builds. This allows the Mac sub-build SDK in an iOS build to be
         # overridden from the command line the same way it is for a Mac build.
         'mac_sdk%': '<!(<(PYTHON) <(DEPTH)/build/mac/find_sdk.py 10.6)',
         # iOS SDK and deployment target support.  The iOS 5.0 SDK is actually
         # what is required, but the value is left blank so when it is set in
         # the project files it will be the "current" iOS SDK.  Forcing 5.0
         # even though it is "current" causes Xcode to spit out a warning for
         # every single project file for not using the "current" SDK.
         'ios_sdk%': '',
         'ios_sdk_path%': '',
         'ios_deployment_target%': '4.3',
         'conditions': [
           # ios_product_name is set to the name of the .app bundle as it should
           # appear on disk.
           ['branding=="Chrome"', {
             'ios_product_name%': 'Chrome',
           }, { # else: branding!="Chrome"
             'ios_product_name%': 'Chromium',
           }],
           ['branding=="Chrome" and buildtype=="Official"', {
             'ios_breakpad%': 1,
           }, { # else: branding!="Chrome" or buildtype!="Official"
             'ios_breakpad%': 0,
           }],
         ],
       }],  # OS=="ios"
       ['OS=="android"', {
         # Location of Android NDK.
         'variables': {
           'variables': {
             'variables': {
               'android_ndk_root%': '<!(/bin/echo -n $ANDROID_NDK_ROOT)',
             },
             'android_ndk_root%': '<(android_ndk_root)',
             'conditions': [
               ['target_arch == "ia32"', {
                 'android_app_abi%': 'x86',
                 'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-9/arch-x86',
               }],
               ['target_arch=="arm"', {
                 'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-9/arch-arm',
                 'conditions': [
                   ['armv7==0', {
                     'android_app_abi%': 'armeabi',
                   }, {
                     'android_app_abi%': 'armeabi-v7a',
                   }],
                 ],
               }],
             ],
           },
           'android_ndk_root%': '<(android_ndk_root)',
           'android_app_abi%': '<(android_app_abi)',
           'android_ndk_sysroot%': '<(android_ndk_sysroot)',
         },
         'android_ndk_root%': '<(android_ndk_root)',
         'android_ndk_sysroot': '<(android_ndk_sysroot)',
         'android_ndk_include': '<(android_ndk_sysroot)/usr/include',
         'android_ndk_lib': '<(android_ndk_sysroot)/usr/lib',
         'android_app_abi%': '<(android_app_abi)',
         # Location of the "strip" binary, used by both gyp and scripts.
         'android_strip%' : '<!(/bin/echo -n <(android_toolchain)/*-strip)',
         # Provides an absolute path to PRODUCT_DIR (e.g. out/Release). Used
         # to specify the output directory for Ant in the Android build.
         'ant_build_out': '`cd <(PRODUCT_DIR) && pwd -P`',
         # Uses Android's crash report system
         'linux_breakpad%': 0,
         # Always uses openssl.
         'use_openssl%': 1,
         'proprietary_codecs%': '<(proprietary_codecs)',
         'enable_task_manager%': 0,
         'safe_browsing%': 0,
         'configuration_policy%': 0,
         'input_speech%': 0,
         'enable_web_intents%': 0,
         'enable_automation%': 0,
         'java_bridge%': 1,
         'build_ffmpegsumo%': 0,
         'linux_use_tcmalloc%': 0,
         # Disable Native Client.
         'disable_nacl%': 1,
         # Android does not support background apps.
         'enable_background%': 0,
         # Sessions are store separately in the Java side.
         'enable_session_service%': 0,
         # Set to 1 once we have a notification system for Android.
         # http://crbug.com/115320
         'notifications%': 0,
         'p2p_apis%' : 0,
         # TODO(jrg): when 'gtest_target_type'=='shared_library' and
         # OS==android, make all gtest_targets depend on
         # testing/android/native_test.gyp:native_test_apk.
         'gtest_target_type%': 'shared_library',
         # Uses system APIs for decoding audio and video.
         'use_libffmpeg%': '0',
         # Always use the chromium skia. The use_system_harfbuzz needs to
         # match use_system_skia.
         'use_system_skia%': '0',
         'use_system_harfbuzz%': '0',
         # Configure crash reporting and build options based on release type.
         'conditions': [
           ['buildtype=="Official"', {
             # Only report crash dumps for Official builds.
             'linux_breakpad%': 1,
           }, {
             'linux_breakpad%': 0,
           }],
         ],
         # When building as part of the Android system, use system libraries
         # where possible to reduce ROM size.
         # TODO(steveblock): Investigate using the system version of sqlite.
         'use_system_sqlite%': 0,  # '<(android_build_type)',
         'use_system_expat%': '<(android_build_type)',
         'use_system_icu%': '<(android_build_type)',
         'use_system_stlport%': '<(android_build_type)',
         # Copy it out one scope.
         'android_build_type%': '<(android_build_type)',
       }],  # OS=="android"
       ['OS=="mac"', {
         'variables': {
           # Mac OS X SDK and deployment target support.  The SDK identifies
           # the version of the system headers that will be used, and
           # corresponds to the MAC_OS_X_VERSION_MAX_ALLOWED compile-time
           # macro.  "Maximum allowed" refers to the operating system version
           # whose APIs are available in the headers.  The deployment target
           # identifies the minimum system version that the built products are
           # expected to function on.  It corresponds to the
           # MAC_OS_X_VERSION_MIN_REQUIRED compile-time macro.  To ensure these
           # macros are available, #include <AvailabilityMacros.h>.  Additional
           # documentation on these macros is available at
           # http://developer.apple.com/mac/library/technotes/tn2002/tn2064.html#SECTION3
           # Chrome normally builds with the Mac OS X 10.6 SDK and sets the
           # deployment target to 10.6.  Other projects, such as O3D, may
           # override these defaults.
           # Normally, mac_sdk_min is used to find an SDK that Xcode knows
           # about that is at least the specified version. In official builds,
           # the SDK must match mac_sdk_min exactly. If the SDK is installed
           # someplace that Xcode doesn't know about, set mac_sdk_path to the
           # path to the SDK; when set to a non-empty string, SDK detection
           # based on mac_sdk_min will be bypassed entirely.
           'mac_sdk_min%': '10.6',
           'mac_sdk_path%': '',
           'mac_deployment_target%': '10.6',
         },
         'mac_sdk_min': '<(mac_sdk_min)',
         'mac_sdk_path': '<(mac_sdk_path)',
         'mac_deployment_target': '<(mac_deployment_target)',
         # Enable clang on mac by default!
         'clang%': 1,
         # Compile in Breakpad support by default so that it can be
         # tested, even if it is not enabled by default at runtime.
         'mac_breakpad_compiled_in%': 1,
         'conditions': [
           # mac_product_name is set to the name of the .app bundle as it should
           # appear on disk.  This duplicates data from
           # chrome/app/theme/chromium/BRANDING and
           # chrome/app/theme/google_chrome/BRANDING, but is necessary to get
           # these names into the build system.
           ['branding=="Chrome"', {
             'mac_product_name%': 'Google Chrome',
           }, { # else: branding!="Chrome"
             'mac_product_name%': 'Chromium',
           }],
           ['branding=="Chrome" and buildtype=="Official"', {
             'mac_sdk%': '<!(<(PYTHON) <(DEPTH)/build/mac/find_sdk.py --verify <(mac_sdk_min) --sdk_path=<(mac_sdk_path))',
             # Enable uploading crash dumps.
             'mac_breakpad_uploads%': 1,
             # Enable dumping symbols at build time for use by Mac Breakpad.
             'mac_breakpad%': 1,
             # Enable Keystone auto-update support.
             'mac_keystone%': 1,
           }, { # else: branding!="Chrome" or buildtype!="Official"
             'mac_sdk%': '<!(<(PYTHON) <(DEPTH)/build/mac/find_sdk.py <(mac_sdk_min))',
             'mac_breakpad_uploads%': 0,
             'mac_breakpad%': 0,
             'mac_keystone%': 0,
           }],
         ],
       }],  # OS=="mac"
       ['OS=="win"', {
         'conditions': [
           ['component=="shared_library"', {
             'win_use_allocator_shim%': 0,
           }],
           ['component=="shared_library" and "<(GENERATOR)"=="ninja"', {
             # Only enabled by default for ninja because it's buggy in VS.
             # Not enabled for component=static_library because some targets
             # are too large and the toolchain fails due to the size of the
             # .obj files.
             'incremental_chrome_dll%': 1,
           }],
           # Don't do incremental linking for large modules on 32-bit.
           ['MSVS_OS_BITS==32', {
             'msvs_large_module_debug_link_mode%': '1',  # No
           },{
             'msvs_large_module_debug_link_mode%': '2',  # Yes
           }],
           ['MSVS_VERSION=="2010e" or MSVS_VERSION=="2008e" or MSVS_VERSION=="2005e"', {
             'msvs_express%': 1,
             'secure_atl%': 0,
           },{
             'msvs_express%': 0,
             'secure_atl%': 1,
           }],
         ],
         'nacl_win64_defines': [
           # This flag is used to minimize dependencies when building
           # Native Client loader for 64-bit Windows.
           'NACL_WIN64',
         ],
       }],
       ['os_posix==1 and chromeos==0 and OS!="android"', {
         'use_cups%': 1,
       }, {
         'use_cups%': 0,
       }],
       # Native Client glibc toolchain is enabled by default except on arm.
       ['target_arch=="arm"', {
         'disable_glibc%': 1,
       }, {
         'disable_glibc%': 0,
       }],
       # Disable SSE2 when building for ARM or MIPS.
       ['target_arch=="arm" or target_arch=="mipsel"', {
         'disable_sse2%': 1,
       }, {
         'disable_sse2%': '<(disable_sse2)',
       }],
       # Set the relative path from this file to the GYP file of the JPEG
       # library used by Chromium.
       ['use_system_libjpeg==1 or use_libjpeg_turbo==0', {
         # Configuration for using the system libjeg is here.
         'libjpeg_gyp_path': '../third_party/libjpeg/libjpeg.gyp',
       }, {
         'libjpeg_gyp_path': '../third_party/libjpeg_turbo/libjpeg.gyp',
       }],
       # Options controlling the use of GConf (the classic GNOME configuration
       # system) and GIO, which contains GSettings (the new GNOME config system).
       ['chromeos==1', {
         'use_gconf%': 0,
         'use_gio%': 0,
       }, {
         'use_gconf%': 1,
         'use_gio%': 1,
       }],
       # Set up -D and -E flags passed into grit.
       ['branding=="Chrome"', {
         # TODO(mmoss) The .grd files look for _google_chrome, but for
         # consistency they should look for google_chrome_build like C++.
         'grit_defines': ['-D', '_google_chrome',
                          '-E', 'CHROMIUM_BUILD=google_chrome'],
       }, {
         'grit_defines': ['-D', '_chromium',
                          '-E', 'CHROMIUM_BUILD=chromium'],
       }],
       ['chromeos==1', {
         'grit_defines': ['-D', 'chromeos', '-D', 'scale_factors=2x'],
       }],
       ['toolkit_views==1', {
         'grit_defines': ['-D', 'toolkit_views'],
       }],
       ['use_aura==1', {
         'grit_defines': ['-D', 'use_aura'],
       }],
       ['use_ash==1', {
         'grit_defines': ['-D', 'use_ash'],
       }],
       ['use_nss==1', {
         'grit_defines': ['-D', 'use_nss'],
       }],
       ['file_manager_extension==1', {
         'grit_defines': ['-D', 'file_manager_extension'],
       }],
       ['remoting==1', {
         'grit_defines': ['-D', 'remoting'],
       }],
       ['use_titlecase_in_grd_files==1', {
         'grit_defines': ['-D', 'use_titlecase'],
       }],
       ['use_third_party_translations==1', {
         'grit_defines': ['-D', 'use_third_party_translations'],
         'locales': [
           'ast', 'bs', 'ca@valencia', 'en-AU', 'eo', 'eu', 'gl', 'hy', 'ia',
           'ka', 'ku', 'kw', 'ms', 'ug'
         ],
       }],
       ['OS=="android"', {
         'grit_defines': ['-D', 'android'],
       }],
       ['OS=="mac"', {
         'grit_defines': ['-D', 'scale_factors=2x'],
       }],
       ['OS == "ios"', {
         'grit_defines': [
           # define for iOS specific resources.
           '-D', 'ios',
           # iOS uses a whitelist to filter resources.
           '-w', '<(DEPTH)/build/ios/grit_whitelist.txt'
         ],
       }],
       ['enable_extensions==1', {
         'grit_defines': ['-D', 'enable_extensions'],
       }],
       ['enable_printing==1', {
         'grit_defines': ['-D', 'enable_printing'],
       }],
       ['enable_themes==1', {
         'grit_defines': ['-D', 'enable_themes'],
       }],
       ['use_oem_wallpaper==1', {
         'grit_defines': ['-D', 'use_oem_wallpaper'],
       }],
       ['clang_use_chrome_plugins==1 and OS!="win"', {
         'clang_chrome_plugins_flags': [
           '<!@(<(DEPTH)/tools/clang/scripts/plugin_flags.sh)'
         ],
       }],
       ['enable_web_intents_tag==1', {
         'grit_defines': ['-D', 'enable_web_intents_tag'],
       }],
       ['asan==1', {
         'clang%': 1,
       }],
       ['asan==1 and OS=="mac"', {
         # See http://crbug.com/145503.
         'component': "static_library",
       }],
       ['tsan==1', {
         'clang%': 1,
       }],
       ['OS=="linux" and clang_type_profiler==1', {
         'clang%': 1,
         'clang_use_chrome_plugins%': 0,
         'make_clang_dir%': 'third_party/llvm-allocated-type/Linux_x64',
       }],
       # On valgrind bots, override the optimizer settings so we don't inline too
       # much and make the stacks harder to figure out.
       #
       # TODO(rnk): Kill off variables that no one else uses and just implement
       # them under a build_for_tool== condition.
       ['build_for_tool=="memcheck" or build_for_tool=="tsan"', {
         # gcc flags
         'mac_debug_optimization': '1',
         'mac_release_optimization': '1',
         'release_optimize': '1',
         'no_gc_sections': 1,
         'debug_extra_cflags': '-g -fno-inline -fno-omit-frame-pointer '
                               '-fno-builtin -fno-optimize-sibling-calls',
         'release_extra_cflags': '-g -fno-inline -fno-omit-frame-pointer '
                                 '-fno-builtin -fno-optimize-sibling-calls',
         # MSVS flags for TSan on Pin and Windows.
         'win_debug_RuntimeChecks': '0',
         'win_debug_disable_iterator_debugging': '1',
         'win_debug_Optimization': '1',
         'win_debug_InlineFunctionExpansion': '0',
         'win_release_InlineFunctionExpansion': '0',
         'win_release_OmitFramePointers': '0',
         'linux_use_tcmalloc': 1,
         'release_valgrind_build': 1,
         'werror': '',
         'component': 'static_library',
         'use_system_zlib': 0,
       }],
       # Build tweaks for DrMemory.
       # TODO(rnk): Combine with tsan config to share the builder.
       # http://crbug.com/108155
       ['build_for_tool=="drmemory"', {
         # These runtime checks force initialization of stack vars which blocks
         # DrMemory's uninit detection.
         'win_debug_RuntimeChecks': '0',
         # Iterator debugging is slow.
         'win_debug_disable_iterator_debugging': '1',
         # Try to disable optimizations that mess up stacks in a release build.
         'win_release_InlineFunctionExpansion': '0',
         'win_release_OmitFramePointers': '0',
         # Ditto for debug, to support bumping win_debug_Optimization.
         'win_debug_InlineFunctionExpansion': 0,
         'win_debug_OmitFramePointers': 0,
         # Keep the code under #ifndef NVALGRIND.
         'release_valgrind_build': 1,
       }],
     ],
     # List of default apps to install in new profiles.  The first list contains
     # the source files as found in svn.  The second list, used only for linux,
     # contains the destination location for each of the files.  When a crx
     # is added or removed from the list, the chrome/browser/resources/
     # default_apps/external_extensions.json file must also be updated.
     'default_apps_list': [
       'browser/resources/default_apps/external_extensions.json',
       'browser/resources/default_apps/gmail.crx',
       'browser/resources/default_apps/search.crx',
       'browser/resources/default_apps/youtube.crx',
       'browser/resources/default_apps/drive.crx',
       'browser/resources/default_apps/docs.crx',
     ],
     'default_apps_list_linux_dest': [
       '<(PRODUCT_DIR)/default_apps/external_extensions.json',
       '<(PRODUCT_DIR)/default_apps/gmail.crx',
       '<(PRODUCT_DIR)/default_apps/search.crx',
       '<(PRODUCT_DIR)/default_apps/youtube.crx',
       '<(PRODUCT_DIR)/default_apps/drive.crx',
       '<(PRODUCT_DIR)/default_apps/docs.crx',
     ],
   },
   'target_defaults': {
     'variables': {
       # The condition that operates on chromium_code is in a target_conditions
       # section, and will not have access to the default fallback value of
       # chromium_code at the top of this file, or to the chromium_code
       # variable placed at the root variables scope of .gyp files, because
       # those variables are not set at target scope.  As a workaround,
       # if chromium_code is not set at target scope, define it in target scope
       # to contain whatever value it has during early variable expansion.
       # That's enough to make it available during target conditional
       # processing.
       'chromium_code%': '<(chromium_code)',
       # See http://msdn.microsoft.com/en-us/library/aa652360(VS.71).aspx
       'win_release_Optimization%': '2', # 2 = /Os
       'win_debug_Optimization%': '0',   # 0 = /Od
       # See http://msdn.microsoft.com/en-us/library/2kxx5t2c(v=vs.80).aspx
       # Tri-state: blank is default, 1 on, 0 off
       'win_release_OmitFramePointers%': '0',
       # Tri-state: blank is default, 1 on, 0 off
       'win_debug_OmitFramePointers%': '',
       # See http://msdn.microsoft.com/en-us/library/8wtf2dfz(VS.71).aspx
       'win_debug_RuntimeChecks%': '3',    # 3 = all checks enabled, 0 = off
       # See http://msdn.microsoft.com/en-us/library/47238hez(VS.71).aspx
       'win_debug_InlineFunctionExpansion%': '',    # empty = default, 0 = off,
       'win_release_InlineFunctionExpansion%': '2', # 1 = only __inline, 2 = max
       # VS inserts quite a lot of extra checks to algorithms like
       # std::partial_sort in Debug build which make them O(N^2)
       # instead of O(N*logN). This is particularly slow under memory
       # tools like ThreadSanitizer so we want it to be disablable.
       # See http://msdn.microsoft.com/en-us/library/aa985982(v=VS.80).aspx
       'win_debug_disable_iterator_debugging%': '0',
       'release_extra_cflags%': '',
       'debug_extra_cflags%': '',
       'release_valgrind_build%': '<(release_valgrind_build)',
       # the non-qualified versions are widely assumed to be *nix-only
       'win_release_extra_cflags%': '',
       'win_debug_extra_cflags%': '',
       # TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
       'enable_wexit_time_destructors%': '<(enable_wexit_time_destructors)',
       # Only used by Windows build for now.  Can be used to build into a
       # differet output directory, e.g., a build_dir_prefix of VS2010_ would
       # output files in src/build/VS2010_{Debug,Release}.
       'build_dir_prefix%': '',
       # Targets are by default not nacl untrusted code.
       'nacl_untrusted_build%': 0,
       'conditions': [
         ['OS=="win" and component=="shared_library"', {
           # See http://msdn.microsoft.com/en-us/library/aa652367.aspx
           'win_release_RuntimeLibrary%': '2', # 2 = /MD (nondebug DLL)
           'win_debug_RuntimeLibrary%': '3',   # 3 = /MDd (debug DLL)
         }, {
           # See http://msdn.microsoft.com/en-us/library/aa652367.aspx
           'win_release_RuntimeLibrary%': '0', # 0 = /MT (nondebug static)
           'win_debug_RuntimeLibrary%': '1',   # 1 = /MTd (debug static)
         }],
         ['OS=="ios"', {
           # See http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Optimize-Options.html
           'mac_release_optimization%': 's', # Use -Os unless overridden
           'mac_debug_optimization%': '0',   # Use -O0 unless overridden
         }, {
           # See http://gcc.gnu.org/onlinedocs/gcc-4.4.2/gcc/Optimize-Options.html
           'mac_release_optimization%': '3', # Use -O3 unless overridden
           'mac_debug_optimization%': '0',   # Use -O0 unless overridden
         }],
       ],
     },
     'conditions': [
       ['OS=="linux" and linux_use_tcmalloc==1 and clang_type_profiler==1', {
         'cflags_cc!': ['-fno-rtti'],
         'cflags_cc+': [
           '-frtti',
           '-gline-tables-only',
           '-fintercept-allocation-functions',
         ],
         'defines': ['TYPE_PROFILING'],
         'dependencies': [
           '<(DEPTH)/base/allocator/allocator.gyp:type_profiler',
         ],
       }],
       ['OS=="win" and "<(msbuild_toolset)"!=""', {
         'msbuild_toolset': '<(msbuild_toolset)',
       }],
       ['branding=="Chrome"', {
         'defines': ['GOOGLE_CHROME_BUILD'],
       }, {  # else: branding!="Chrome"
         'defines': ['CHROMIUM_BUILD'],
       }],
       ['OS=="mac" and component=="shared_library"', {
         'xcode_settings': {
           'DYLIB_INSTALL_NAME_BASE': '@rpath',
           'LD_RUNPATH_SEARCH_PATHS': [
             # For unbundled binaries.
             '@loader_path/.',
             # For bundled binaries, to get back from Binary.app/Contents/MacOS.
             '@loader_path/../../..',
           ],
         },
       }],
       ['branding=="Chrome" and (OS=="win" or OS=="mac")', {
         'defines': ['ENABLE_RLZ'],
       }],
       ['component=="shared_library"', {
         'defines': ['COMPONENT_BUILD'],
       }],
       ['toolkit_views==1', {
         'defines': ['TOOLKIT_VIEWS=1'],
       }],
       ['ui_compositor_image_transport==1', {
         'defines': ['UI_COMPOSITOR_IMAGE_TRANSPORT'],
       }],
       ['use_aura==1', {
         'defines': ['USE_AURA=1'],
       }],
       ['use_ash==1', {
         'defines': ['USE_ASH=1'],
       }],
       ['use_libjpeg_turbo==1', {
         'defines': ['USE_LIBJPEG_TURBO=1'],
       }],
       ['use_nss==1', {
         'defines': ['USE_NSS=1'],
       }],
       ['enable_one_click_signin==1', {
         'defines': ['ENABLE_ONE_CLICK_SIGNIN'],
       }],
       ['toolkit_uses_gtk==1 and toolkit_views==0', {
         # TODO(erg): We are progressively sealing up use of deprecated features
         # in gtk in preparation for an eventual porting to gtk3.
         'defines': ['GTK_DISABLE_SINGLE_INCLUDES=1'],
       }],
       ['chromeos==1', {
         'defines': ['OS_CHROMEOS=1'],
       }],
       ['use_xi2_mt!=0', {
         'defines': ['USE_XI2_MT=<(use_xi2_mt)'],
       }],
       ['file_manager_extension==1', {
         'defines': ['FILE_MANAGER_EXTENSION=1'],
       }],
       ['profiling==1', {
         'defines': ['ENABLE_PROFILING=1'],
       }],
       ['OS=="linux" and glibcxx_debug==1', {
         'defines': ['_GLIBCXX_DEBUG=1',],
         'cflags_cc!': ['-fno-rtti'],
         'cflags_cc+': ['-frtti', '-g'],
       }],
       ['OS=="linux"', {
         # we need lrint(), which is ISOC99, and Xcode
 	# already forces -std=c99 for mac below
         'defines': ['_ISOC99_SOURCE=1'],
       }],
       ['remoting==1', {
         'defines': ['ENABLE_REMOTING=1'],
       }],
       ['enable_webrtc==1', {
         'defines': ['ENABLE_WEBRTC=1'],
       }],
       ['proprietary_codecs==1', {
         'defines': ['USE_PROPRIETARY_CODECS'],
       }],
       ['enable_pepper_threading==1', {
         'defines': ['ENABLE_PEPPER_THREADING'],
       }],
       ['enable_viewport==1', {
         'defines': ['ENABLE_VIEWPORT'],
       }],
       ['configuration_policy==1', {
         'defines': ['ENABLE_CONFIGURATION_POLICY'],
       }],
       ['input_speech==1', {
         'defines': ['ENABLE_INPUT_SPEECH'],
       }],
       ['notifications==1', {
         'defines': ['ENABLE_NOTIFICATIONS'],
       }],
       ['enable_hidpi==1', {
         'defines': ['ENABLE_HIDPI=1'],
       }],
       ['fastbuild!=0', {
         'conditions': [
           # For Windows and Mac, we don't genererate debug information.
           ['OS=="win" or OS=="mac"', {
             'msvs_settings': {
               'VCLinkerTool': {
                 'GenerateDebugInformation': 'false',
               },
               'VCCLCompilerTool': {
                 'DebugInformationFormat': '0',
               }
             },
             'xcode_settings': {
               'GCC_GENERATE_DEBUGGING_SYMBOLS': 'NO',
             },
           }, { # else: OS != "win", generate less debug information.
             'variables': {
               'debug_extra_cflags': '-g1',
             },
           }],
           # Clang creates chubby debug information, which makes linking very
           # slow. For now, don't create debug information with clang.  See
           # http://crbug.com/70000
           ['(OS=="linux" or OS=="android") and clang==1', {
             'variables': {
               'debug_extra_cflags': '-g0',
             },
           }],
         ],  # conditions for fastbuild.
       }],  # fastbuild!=0
       ['dcheck_always_on!=0', {
         'defines': ['DCHECK_ALWAYS_ON=1'],
       }],  # dcheck_always_on!=0
       ['selinux==1', {
         'defines': ['CHROMIUM_SELINUX=1'],
       }],
       ['win_use_allocator_shim==0', {
         'conditions': [
           ['OS=="win"', {
             'defines': ['NO_TCMALLOC'],
           }],
         ],
       }],
       ['enable_gpu==1', {
         'defines': [
           'ENABLE_GPU=1',
         ],
       }],
       ['use_openssl==1', {
         'defines': [
           'USE_OPENSSL=1',
         ],
       }],
       ['enable_eglimage==1', {
         'defines': [
           'ENABLE_EGLIMAGE=1',
         ],
       }],
       ['use_skia==1', {
         'defines': [
           'USE_SKIA=1',
         ],
       }],
       ['coverage!=0', {
         'conditions': [
           ['OS=="mac" or OS=="ios"', {
             'xcode_settings': {
               'GCC_INSTRUMENT_PROGRAM_FLOW_ARCS': 'YES',  # -fprofile-arcs
               'GCC_GENERATE_TEST_COVERAGE_FILES': 'YES',  # -ftest-coverage
             },
           }],
           ['OS=="mac"', {
             # Add -lgcov for types executable, shared_library, and
             # loadable_module; not for static_library.
             # This is a delayed conditional.
             'target_conditions': [
               ['_type!="static_library"', {
                 'xcode_settings': { 'OTHER_LDFLAGS': [ '-lgcov' ] },
               }],
             ],
           }],
           ['OS=="linux" or OS=="android"', {
             'cflags': [ '-ftest-coverage',
                         '-fprofile-arcs' ],
             'link_settings': { 'libraries': [ '-lgcov' ] },
           }],
           # Finally, for Windows, we simply turn on profiling.
           ['OS=="win"', {
             'msvs_settings': {
               'VCLinkerTool': {
                 'Profile': 'true',
               },
               'VCCLCompilerTool': {
                 # /Z7, not /Zi, so coverage is happyb
                 'DebugInformationFormat': '1',
                 'AdditionalOptions': ['/Yd'],
               }
             }
          }],  # OS==win
         ],  # conditions for coverage
       }],  # coverage!=0
       ['OS=="win"', {
         'defines': [
           '__STD_C',
           '_CRT_SECURE_NO_DEPRECATE',
           '_SCL_SECURE_NO_DEPRECATE',
         ],
         'include_dirs': [
           '<(DEPTH)/third_party/wtl/include',
         ],
         'conditions': [
           ['win_z7!=0', {
             'msvs_settings': {
               # Generates debug info when win_z7=1
               # even if fastbuild=1 (that makes GenerateDebugInformation false).
               'VCLinkerTool': {
                 'GenerateDebugInformation': 'true',
               },
               'VCCLCompilerTool': {
                 'DebugInformationFormat': '1',
               }
             }
           }],
         ],  # win_z7!=0
       }],  # OS==win
       ['enable_task_manager==1', {
         'defines': [
           'ENABLE_TASK_MANAGER=1',
         ],
       }],
       ['enable_web_intents==1', {
         'defines': [
           'ENABLE_WEB_INTENTS=1',
         ],
       }],
       ['enable_extensions==1', {
         'defines': [
           'ENABLE_EXTENSIONS=1',
         ],
       }],
       ['OS=="win" and branding=="Chrome"', {
         'defines': ['ENABLE_SWIFTSHADER'],
       }],
       ['enable_dart==1', {
         'defines': ['WEBKIT_USING_DART=1'],
       }],
       ['enable_plugin_installation==1', {
         'defines': ['ENABLE_PLUGIN_INSTALLATION=1'],
       }],
       ['enable_protector_service==1', {
         'defines': ['ENABLE_PROTECTOR_SERVICE=1'],
       }],
       ['enable_session_service==1', {
         'defines': ['ENABLE_SESSION_SERVICE=1'],
       }],
       ['enable_themes==1', {
         'defines': ['ENABLE_THEMES=1'],
       }],
       ['enable_background==1', {
         'defines': ['ENABLE_BACKGROUND=1'],
       }],
       ['enable_automation==1', {
         'defines': ['ENABLE_AUTOMATION=1'],
       }],
       ['enable_printing==1', {
         'defines': ['ENABLE_PRINTING=1'],
       }],
       ['enable_captive_portal_detection==1', {
         'defines': ['ENABLE_CAPTIVE_PORTAL_DETECTION=1'],
       }],
       ['disable_ftp_support==1', {
         'defines': ['DISABLE_FTP_SUPPORT=1'],
       }],
     ],  # conditions for 'target_defaults'
     'target_conditions': [
       ['enable_wexit_time_destructors==1', {
         'conditions': [
           [ 'clang==1', {
             'cflags': [
               '-Wexit-time-destructors',
             ],
             'xcode_settings': {
               'WARNING_CFLAGS': [
                 '-Wexit-time-destructors',
               ],
             },
           }],
         ],
       }],
       ['chromium_code==0', {
         'conditions': [
           [ 'os_posix==1 and OS!="mac" and OS!="ios"', {
             # We don't want to get warnings from third-party code,
             # so remove any existing warning-enabling flags like -Wall.
             'cflags!': [
               '-Wall',
               '-Wextra',
             ],
             'cflags_cc': [
               # Don't warn about hash_map in third-party code.
               '-Wno-deprecated',
             ],
             'cflags': [
               # Don't warn about printf format problems.
               # This is off by default in gcc but on in Ubuntu's gcc(!).
               '-Wno-format',
             ],
             'cflags_cc!': [
               # TODO(fischman): remove this.
               # http://code.google.com/p/chromium/issues/detail?id=90453
               '-Wsign-compare',
             ]
           }],
           # TODO: Fix all warnings on chromeos too.
           [ 'os_posix==1 and OS!="mac" and OS!="ios" and (clang!=1 or chromeos==1)', {
             'cflags!': [
               '-Werror',
             ],
           }],
           [ 'os_posix==1 and os_bsd!=1 and OS!="mac" and OS!="android"', {
             'cflags': [
               # Don't warn about ignoring the return value from e.g. close().
               # This is off by default in some gccs but on by default in others.
               # BSD systems do not support this option, since they are usually
               # using gcc 4.2.1, which does not have this flag yet.
               '-Wno-unused-result',
             ],
           }],
           [ 'OS=="win"', {
             'defines': [
               '_CRT_SECURE_NO_DEPRECATE',
               '_CRT_NONSTDC_NO_WARNINGS',
               '_CRT_NONSTDC_NO_DEPRECATE',
               '_SCL_SECURE_NO_DEPRECATE',
             ],
             'msvs_disabled_warnings': [4800],
             'msvs_settings': {
               'VCCLCompilerTool': {
                 'WarningLevel': '3',
                 'WarnAsError': '<(win_third_party_warn_as_error)',
                 'Detect64BitPortabilityProblems': 'false',
               },
             },
             'conditions': [
               ['buildtype=="Official"', {
                 'msvs_settings': {
                   'VCCLCompilerTool': { 'WarnAsError': 'false' },
                 }
               }],
             ],
           }],
           # TODO(darin): Unfortunately, some third_party code depends on base/
           [ 'OS=="win" and component=="shared_library"', {
             'msvs_disabled_warnings': [
 ,  # class 'std::xx' needs to have dll-interface.
             ],
           }],
           [ 'OS=="mac" or OS=="ios"', {
             'xcode_settings': {
               'WARNING_CFLAGS!': ['-Wall', '-Wextra'],
             },
             'conditions': [
               ['buildtype=="Official"', {
                 'xcode_settings': {
                   'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',    # -Werror
                 },
               }],
             ],
           }],
           [ 'OS=="ios"', {
             'xcode_settings': {
               # TODO(ios): Fix remaining warnings in third-party code, then
               # remove this; the Mac cleanup didn't get everything that's
               # flagged in an iOS build.
               'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO',
               'RUN_CLANG_STATIC_ANALYZER': 'NO',
             },
           }],
         ],
       }, {
         'includes': [
            # Rules for excluding e.g. foo_win.cc from the build on non-Windows.
           'filename_rules.gypi',
         ],
         # In Chromium code, we define __STDC_FORMAT_MACROS in order to get the
         # C99 macros on Mac and Linux.
         'defines': [
           '__STDC_FORMAT_MACROS',
         ],
         'conditions': [
           ['OS=="win"', {
             # turn on warnings for signed/unsigned mismatch on chromium code.
             'msvs_settings': {
               'VCCLCompilerTool': {
                 'AdditionalOptions': ['/we4389'],
               },
             },
           }],
           ['OS=="win" and component=="shared_library"', {
             'msvs_disabled_warnings': [
 ,  # class 'std::xx' needs to have dll-interface.
             ],
           }],
         ],
       }],
     ],  # target_conditions for 'target_defaults'
     'default_configuration': 'Debug',
     'configurations': {
       # VCLinkerTool LinkIncremental values below:
       #   0 == default
       #   1 == /INCREMENTAL:NO
       #   2 == /INCREMENTAL
       # Debug links incremental, Release does not.
       #
       # Abstract base configurations to cover common attributes.
       #
       'Common_Base': {
         'abstract': 1,
         'msvs_configuration_attributes': {
           'OutputDirectory': '<(DEPTH)\\build\\<(build_dir_prefix)$(ConfigurationName)',
           'IntermediateDirectory': '$(OutDir)\\obj\\$(ProjectName)',
           'CharacterSet': '1',
         },
       },
       'x86_Base': {
         'abstract': 1,
         'msvs_settings': {
           'VCLinkerTool': {
             'TargetMachine': '1',
           },
         },
         'msvs_configuration_platform': 'Win32',
       },
       'x64_Base': {
         'abstract': 1,
         'msvs_configuration_platform': 'x64',
         'msvs_settings': {
           'VCLinkerTool': {
             'TargetMachine': '17', # x86 - 64
             'AdditionalLibraryDirectories!':
               ['<(windows_sdk_path)/Lib/win8/um/x86'],
             'AdditionalLibraryDirectories':
               ['<(windows_sdk_path)/Lib/win8/um/x64'],
           },
           'VCLibrarianTool': {
             'AdditionalLibraryDirectories!':
               ['<(windows_sdk_path)/Lib/win8/um/x86'],
             'AdditionalLibraryDirectories':
               ['<(windows_sdk_path)/Lib/win8/um/x64'],
           },
         },
         'defines': [
           # Not sure if tcmalloc works on 64-bit Windows.
           'NO_TCMALLOC',
         ],
       },
       'Debug_Base': {
         'abstract': 1,
         'defines': [
           'DYNAMIC_ANNOTATIONS_ENABLED=1',
           'WTF_USE_DYNAMIC_ANNOTATIONS=1',
         ],
         'xcode_settings': {
           'COPY_PHASE_STRIP': 'NO',
           'GCC_OPTIMIZATION_LEVEL': '<(mac_debug_optimization)',
           'OTHER_CFLAGS': [
             '<@(debug_extra_cflags)',
           ],
         },
         'msvs_settings': {
           'VCCLCompilerTool': {
             'Optimization': '<(win_debug_Optimization)',
             'PreprocessorDefinitions': ['_DEBUG'],
             'BasicRuntimeChecks': '<(win_debug_RuntimeChecks)',
             'RuntimeLibrary': '<(win_debug_RuntimeLibrary)',
             'conditions': [
               # According to MSVS, InlineFunctionExpansion=0 means
               # "default inlining", not "/Ob0".
               # Thus, we have to handle InlineFunctionExpansion==0 separately.
               ['win_debug_InlineFunctionExpansion==0', {
                 'AdditionalOptions': ['/Ob0'],
               }],
               ['win_debug_InlineFunctionExpansion!=""', {
                 'InlineFunctionExpansion':
                   '<(win_debug_InlineFunctionExpansion)',
               }],
               ['win_debug_disable_iterator_debugging==1', {
                 'PreprocessorDefinitions': ['_HAS_ITERATOR_DEBUGGING=0'],
               }],
               # if win_debug_OmitFramePointers is blank, leave as default
               ['win_debug_OmitFramePointers==1', {
                 'OmitFramePointers': 'true',
               }],
               ['win_debug_OmitFramePointers==0', {
                 'OmitFramePointers': 'false',
                 # The above is not sufficient (http://crbug.com/106711): it
                 # simply eliminates an explicit "/Oy", but both /O2 and /Ox
                 # perform FPO regardless, so we must explicitly disable.
                 # We still want the false setting above to avoid having
                 # "/Oy /Oy-" and warnings about overriding.
                 'AdditionalOptions': ['/Oy-'],
               }],
             ],
             'AdditionalOptions': [ '<@(win_debug_extra_cflags)', ],
           },
           'VCLinkerTool': {
             'LinkIncremental': '<(msvs_debug_link_incremental)',
             # ASLR makes debugging with windbg difficult because Chrome.exe and
             # Chrome.dll share the same base name. As result, windbg will
             # name the Chrome.dll module like chrome_<base address>, where
             # <base address> typically changes with each launch. This in turn
             # means that breakpoints in Chrome.dll don't stick from one launch
             # to the next. For this reason, we turn ASLR off in debug builds.
             # Note that this is a three-way bool, where 0 means to pick up
             # the default setting, 1 is off and 2 is on.
             'RandomizedBaseAddress': 1,
           },
           'VCResourceCompilerTool': {
             'PreprocessorDefinitions': ['_DEBUG'],
           },
         },
         'conditions': [
           ['OS=="linux" or OS=="android"', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '<@(debug_extra_cflags)',
                 ],
               }],
             ],
           }],
           # Disabled on iOS because it was causing a crash on startup.
           # TODO(michelea): investigate, create a reduced test and possibly
           # submit a radar.
           ['release_valgrind_build==0 and OS!="ios"', {
             'xcode_settings': {
               'OTHER_CFLAGS': [
                 '-fstack-protector-all',  # Implies -fstack-protector
               ],
             },
           }],
         ],
       },
       'Release_Base': {
         'abstract': 1,
         'defines': [
           'NDEBUG',
         ],
         'xcode_settings': {
           'DEAD_CODE_STRIPPING': 'YES',  # -Wl,-dead_strip
           'GCC_OPTIMIZATION_LEVEL': '<(mac_release_optimization)',
           'OTHER_CFLAGS': [ '<@(release_extra_cflags)', ],
         },
         'msvs_settings': {
           'VCCLCompilerTool': {
             'RuntimeLibrary': '<(win_release_RuntimeLibrary)',
             'conditions': [
               # In official builds, each target will self-select
               # an optimization level.
               ['buildtype!="Official"', {
                   'Optimization': '<(win_release_Optimization)',
                 },
               ],
               # According to MSVS, InlineFunctionExpansion=0 means
               # "default inlining", not "/Ob0".
               # Thus, we have to handle InlineFunctionExpansion==0 separately.
               ['win_release_InlineFunctionExpansion==0', {
                 'AdditionalOptions': ['/Ob0'],
               }],
               ['win_release_InlineFunctionExpansion!=""', {
                 'InlineFunctionExpansion':
                   '<(win_release_InlineFunctionExpansion)',
               }],
               # if win_release_OmitFramePointers is blank, leave as default
               ['win_release_OmitFramePointers==1', {
                 'OmitFramePointers': 'true',
               }],
               ['win_release_OmitFramePointers==0', {
                 'OmitFramePointers': 'false',
                 # The above is not sufficient (http://crbug.com/106711): it
                 # simply eliminates an explicit "/Oy", but both /O2 and /Ox
                 # perform FPO regardless, so we must explicitly disable.
                 # We still want the false setting above to avoid having
                 # "/Oy /Oy-" and warnings about overriding.
                 'AdditionalOptions': ['/Oy-'],
               }],
             ],
             'AdditionalOptions': [ '<@(win_release_extra_cflags)', ],
           },
           'VCLinkerTool': {
             # LinkIncremental is a tri-state boolean, where 0 means default
             # (i.e., inherit from parent solution), 1 means false, and
             # 2 means true.
             'LinkIncremental': '1',
             # This corresponds to the /PROFILE flag which ensures the PDB
             # file contains FIXUP information (growing the PDB file by about
             # 5%) but does not otherwise alter the output binary. This
             # information is used by the Syzygy optimization tool when
             # decomposing the release image.
             'Profile': 'true',
           },
         },
         'conditions': [
           ['msvs_use_common_release', {
             'includes': ['release.gypi'],
           }],
           ['release_valgrind_build==0', {
             'defines': [
               'NVALGRIND',
               'DYNAMIC_ANNOTATIONS_ENABLED=0',
             ],
           }, {
             'defines': [
               'DYNAMIC_ANNOTATIONS_ENABLED=1',
               'WTF_USE_DYNAMIC_ANNOTATIONS=1',
             ],
           }],
           ['win_use_allocator_shim==0', {
             'defines': ['NO_TCMALLOC'],
           }],
           ['OS=="linux"', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '<@(release_extra_cflags)',
                 ],
               }],
             ],
           }],
         ],
       },
       #
       # Concrete configurations
       #
       'Debug': {
         'inherit_from': ['Common_Base', 'x86_Base', 'Debug_Base'],
       },
       'Release': {
         'inherit_from': ['Common_Base', 'x86_Base', 'Release_Base'],
       },
       'conditions': [
         [ 'OS=="win"', {
           # TODO(bradnelson): add a gyp mechanism to make this more graceful.
           'Debug_x64': {
             'inherit_from': ['Common_Base', 'x64_Base', 'Debug_Base'],
           },
           'Release_x64': {
             'inherit_from': ['Common_Base', 'x64_Base', 'Release_Base'],
           },
         }],
       ],
     },
   },
   'conditions': [
     ['os_posix==1 and OS!="mac" and OS!="ios"', {
       'target_defaults': {
         # Enable -Werror by default, but put it in a variable so it can
         # be disabled in ~/.gyp/include.gypi on the valgrind builders.
         'variables': {
           'werror%': '-Werror',
           'libraries_for_target%': '',
         },
         'defines': [
           '_FILE_OFFSET_BITS=64',
         ],
         'cflags': [
           '<(werror)',  # See note above about the werror variable.
           '-pthread',
           '-fno-exceptions',
           '-fno-strict-aliasing',  # See http://crbug.com/32204
           '-Wall',
           # TODO(evan): turn this back on once all the builds work.
           # '-Wextra',
           # Don't warn about unused function params.  We use those everywhere.
           '-Wno-unused-parameter',
           # Don't warn about the "struct foo f = {0};" initialization pattern.
           '-Wno-missing-field-initializers',
           # Don't export any symbols (for example, to plugins we dlopen()).
           # Note: this is *required* to make some plugins work.
           '-fvisibility=hidden',
           '-pipe',
         ],
         'cflags_cc': [
           '-fno-rtti',
           '-fno-threadsafe-statics',
           # Make inline functions have hidden visiblity by default.
           # Surprisingly, not covered by -fvisibility=hidden.
           '-fvisibility-inlines-hidden',
           # GCC turns on -Wsign-compare for C++ under -Wall, but clang doesn't,
           # so we specify it explicitly.
           # TODO(fischman): remove this if http://llvm.org/PR10448 obsoletes it.
           # http://code.google.com/p/chromium/issues/detail?id=90453
           '-Wsign-compare',
         ],
         'ldflags': [
           '-pthread', '-Wl,-z,noexecstack',
         ],
         'libraries' : [
           '<(libraries_for_target)',
         ],
         'configurations': {
           'Debug_Base': {
             'variables': {
               'debug_optimize%': '0',
             },
             'defines': [
               '_DEBUG',
             ],
             'cflags': [
               '-O>(debug_optimize)',
               '-g',
             ],
             'conditions' : [
               ['OS=="android" and android_full_debug==0', {
                 # Some configurations are copied from Release_Base to reduce
                 # the binary size.
                 'variables': {
                   'debug_optimize%': 's',
                 },
                 'cflags': [
                   '-fomit-frame-pointer',
                   '-fdata-sections',
                   '-ffunction-sections',
                 ],
                 'ldflags': [
                   '-Wl,-O1',
                   '-Wl,--as-needed',
                   '-Wl,--gc-sections',
                 ],
               }],
             ],
           },
           'Release_Base': {
             'variables': {
               'release_optimize%': '2',
               # Binaries become big and gold is unable to perform GC
               # and remove unused sections for some of test targets
               # on 32 bit platform.
               # (This is currently observed only in chromeos valgrind bots)
               # The following flag is to disable --gc-sections linker
               # option for these bots.
               'no_gc_sections%': 0,
               # TODO(bradnelson): reexamine how this is done if we change the
               # expansion of configurations
               'release_valgrind_build%': 0,
             },
             'cflags': [
               '-O<(release_optimize)',
               # Don't emit the GCC version ident directives, they just end up
               # in the .comment section taking up binary size.
               '-fno-ident',
               # Put data and code in their own sections, so that unused symbols
               # can be removed at link time with --gc-sections.
               '-fdata-sections',
               '-ffunction-sections',
             ],
             'ldflags': [
               # Specifically tell the linker to perform optimizations.
               # See http://lwn.net/Articles/192624/ .
               '-Wl,-O1',
               '-Wl,--as-needed',
             ],
             'conditions' : [
               ['no_gc_sections==0', {
                 'ldflags': [
                   '-Wl,--gc-sections',
                 ],
               }],
               ['OS=="android"', {
                 'variables': {
                   'release_optimize%': 's',
                 },
                 'cflags': [
                   '-fomit-frame-pointer',
                 ],
               }],
               ['clang==1', {
                 'cflags!': [
                   '-fno-ident',
                 ],
               }],
               ['profiling==1', {
                 'cflags': [
                   '-fno-omit-frame-pointer',
                   '-g',
                 ],
               }],
             ],
           },
         },
         'variants': {
           'coverage': {
             'cflags': ['-fprofile-arcs', '-ftest-coverage'],
             'ldflags': ['-fprofile-arcs'],
           },
           'profile': {
             'cflags': ['-pg', '-g'],
             'ldflags': ['-pg'],
           },
           'symbols': {
             'cflags': ['-g'],
           },
         },
         'conditions': [
           ['target_arch=="ia32"', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'asflags': [
                   # Needed so that libs with .s files (e.g. libicudata.a)
                   # are compatible with the general 32-bit-ness.
                   '-32',
                 ],
                 # All floating-point computations on x87 happens in 80-bit
                 # precision.  Because the C and C++ language standards allow
                 # the compiler to keep the floating-point values in higher
                 # precision than what's specified in the source and doing so
                 # is more efficient than constantly rounding up to 64-bit or
                 # 32-bit precision as specified in the source, the compiler,
                 # especially in the optimized mode, tries very hard to keep
                 # values in x87 floating-point stack (in 80-bit precision)
                 # as long as possible. This has important side effects, that
                 # the real value used in computation may change depending on
                 # how the compiler did the optimization - that is, the value
                 # kept in 80-bit is different than the value rounded down to
                 # 64-bit or 32-bit. There are possible compiler options to
                 # make this behavior consistent (e.g. -ffloat-store would keep
                 # all floating-values in the memory, thus force them to be
                 # rounded to its original precision) but they have significant
                 # runtime performance penalty.
                 #
                 # -mfpmath=sse -msse2 makes the compiler use SSE instructions
                 # which keep floating-point values in SSE registers in its
                 # native precision (32-bit for single precision, and 64-bit
                 # for double precision values). This means the floating-point
                 # value used during computation does not change depending on
                 # how the compiler optimized the code, since the value is
                 # always kept in its specified precision.
                 'conditions': [
                   ['branding=="Chromium" and disable_sse2==0', {
                     'cflags': [
                       '-march=pentium4',
                       '-msse2',
                       '-mfpmath=sse',
                     ],
                   }],
                   # ChromeOS targets Pinetrail, which is sse3, but most of the
                   # benefit comes from sse2 so this setting allows ChromeOS
                   # to build on other CPUs.  In the future -march=atom would
                   # help but requires a newer compiler.
                   ['chromeos==1 and disable_sse2==0', {
                     'cflags': [
                       '-msse2',
                     ],
                   }],
                   # Install packages have started cropping up with
                   # different headers between the 32-bit and 64-bit
                   # versions, so we have to shadow those differences off
                   # and make sure a 32-bit-on-64-bit build picks up the
                   # right files.
                   # For android build, use NDK headers instead of host headers
                   ['host_arch!="ia32" and OS!="android"', {
                     'include_dirs+': [
                       '/usr/include32',
                     ],
                   }],
                 ],
                'target_conditions': [
                  ['_toolset=="target" and OS!="android"', {
                     # -mmmx allows mmintrin.h to be used for mmx intrinsics.
                     # video playback is mmx and sse2 optimized.
                     'cflags': [
                       '-m32',
                       '-mmmx',
                     ],
                     'ldflags': [
                       '-m32',
                     ],
                     'cflags_mozilla': [
                       '-m32',
                       '-mmmx',
                     ],
                   }],
                 ],
               }],
             ],
           }],
           ['target_arch=="arm"', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags_cc': [
                   # The codesourcery arm-2009q3 toolchain warns at that the ABI
                   # has changed whenever it encounters a varargs function. This
                   # silences those warnings, as they are not helpful and
                   # clutter legitimate warnings.
                   '-Wno-abi',
                 ],
                 'conditions': [
                   ['arm_thumb==1', {
                     'cflags': [
                     '-mthumb',
                     ]
                   }],
                   ['armv7==1', {
                     'cflags': [
                       '-march=armv7-a',
                       '-mtune=cortex-a8',
                       '-mfloat-abi=<(arm_float_abi)',
                     ],
                     'conditions': [
                       ['arm_neon==1', {
                         'cflags': [ '-mfpu=neon', ],
                       }, {
                         'cflags': [ '-mfpu=<(arm_fpu)', ],
                       }],
                     ],
                   }],
                   ['OS=="android"', {
                     # Most of the following flags are derived from what Android
                     # uses by default when building for arm, reference for which
                     # can be found in the following file in the Android NDK:
                     # toolchains/arm-linux-androideabi-4.4.3/setup.mk
                     'cflags': [
                       # The tree-sra optimization (scalar replacement for
                       # aggregates enabling subsequent optimizations) leads to
                       # invalid code generation when using the Android NDK's
                       # compiler (r5-r7). This can be verified using
                       # TestWebKitAPI's WTF.Checked_int8_t test.
                       '-fno-tree-sra',
                       '-fuse-ld=gold',
                       '-Wno-psabi',
                     ],
                     # Android now supports .relro sections properly.
                     # NOTE: While these flags enable the generation of .relro
                     # sections, the generated libraries can still be loaded on
                     # older Android platform versions.
                     'ldflags': [
                         '-Wl,-z,relro',
                         '-Wl,-z,now',
                         '-fuse-ld=gold',
                     ],
                     'conditions': [
                       ['arm_thumb == 1', {
                         # Android toolchain doesn't support -mimplicit-it=thumb
                         'cflags!': [ '-Wa,-mimplicit-it=thumb', ],
                         'cflags': [ '-mthumb-interwork', ],
                       }],
                       ['armv7==0', {
                         # Flags suitable for Android emulator
                         'cflags': [
                           '-march=armv5te',
                           '-mtune=xscale',
                           '-msoft-float',
                         ],
                         'defines': [
                           '__ARM_ARCH_5__',
                           '__ARM_ARCH_5T__',
                           '__ARM_ARCH_5E__',
                           '__ARM_ARCH_5TE__',
                         ],
                       }],
                       ['clang==1', {
                         'cflags!': [
                           # Clang does not support the following options.
                           '-mthumb-interwork',
                           '-finline-limit=64',
                           '-fno-tree-sra',
                           '-fuse-ld=gold',
                           '-Wno-psabi',
                         ],
                       }],
                     ],
                   }],
                 ],
               }],
             ],
           }],
           ['linux_fpic==1', {
             'cflags': [
               '-fPIC',
             ],
             'ldflags': [
               '-fPIC',
             ],
           }],
           ['sysroot!=""', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '--sysroot=<(sysroot)',
                 ],
                 'ldflags': [
                   '--sysroot=<(sysroot)',
                 ],
               }]]
           }],
           ['clang==1', {
             'cflags': [
               '-Wheader-hygiene',
               # Clang spots more unused functions.
               '-Wno-unused-function',
               # Don't die on dtoa code that uses a char as an array index.
               '-Wno-char-subscripts',
               # Especially needed for gtest macros using enum values from Mac
               # system headers.
               # TODO(pkasting): In C++11 this is legal, so this should be
               # removed when we change to that.  (This is also why we don't
               # bother fixing all these cases today.)
               '-Wno-unnamed-type-template-args',
               # This (rightyfully) complains about 'override', which we use
               # heavily.
               '-Wno-c++11-extensions',
               # Warns on switches on enums that cover all enum values but
               # also contain a default: branch. Chrome is full of that.
               '-Wno-covered-switch-default',
               # TODO(thakis): Remove this.
               '-Wno-implicit-conversion-floating-point-to-bool',
             ],
             'cflags!': [
               # Clang doesn't seem to know know this flag.
               '-mfpmath=sse',
             ],
           }],
           ['clang==1 and clang_use_chrome_plugins==1', {
             'cflags': [
               '<@(clang_chrome_plugins_flags)',
             ],
           }],
           ['clang==1 and clang_load!=""', {
             'cflags': [
               '-Xclang', '-load', '-Xclang', '<(clang_load)',
             ],
           }],
           ['clang==1 and clang_add_plugin!=""', {
             'cflags': [
               '-Xclang', '-add-plugin', '-Xclang', '<(clang_add_plugin)',
             ],
           }],
           ['clang==1 and "<(GENERATOR)"=="ninja"', {
             'cflags': [
               # See http://crbug.com/110262
               '-fcolor-diagnostics',
             ],
           }],
           ['asan==1', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '-faddress-sanitizer',
                   '-fno-omit-frame-pointer',
                 ],
                 'ldflags': [
                   '-faddress-sanitizer',
                 ],
                 'defines': [
                   'ADDRESS_SANITIZER',
                 ],
               }],
             ],
           }],
           ['tsan==1', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': [
                   '-fthread-sanitizer',
                   '-fno-omit-frame-pointer',
                   '-fPIE',
                 ],
                 'ldflags': [
                   '-fthread-sanitizer',
                 ],
                 'defines': [
                   'THREAD_SANITIZER',
                   'DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL=1',
                 ],
                 'target_conditions': [
                   ['_type=="executable"', {
                     'ldflags': [
                       '-pie',
                     ],
                   }],
                 ],
               }],
             ],
           }],
           ['order_profiling!=0 and (chromeos==1 or OS=="linux")', {
             'target_conditions' : [
               ['_toolset=="target"', {
                 'cflags': [
                   '-finstrument-functions',
                   # Allow mmx intrinsics to inline, so that the
                   # compiler can expand the intrinsics.
                   '-finstrument-functions-exclude-file-list=mmintrin.h',
                 ],
               }],
             ],
           }],
           ['linux_breakpad==1', {
             'cflags': [ '-g' ],
             'defines': ['USE_LINUX_BREAKPAD'],
           }],
           ['linux_use_heapchecker==1', {
             'variables': {'linux_use_tcmalloc%': 1},
             'defines': ['USE_HEAPCHECKER'],
           }],
           ['linux_use_tcmalloc==0', {
             'defines': ['NO_TCMALLOC'],
           }],
           ['linux_keep_shadow_stacks==1', {
             'defines': ['KEEP_SHADOW_STACKS'],
             'cflags': [
               '-finstrument-functions',
               # Allow mmx intrinsics to inline, so that the compiler can expand
               # the intrinsics.
               '-finstrument-functions-exclude-file-list=mmintrin.h',
             ],
           }],
           ['linux_use_gold_flags==1', {
             'ldflags': [
               # Experimentation found that using four linking threads
               # saved ~20% of link time.
               # https://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/281527606915bb36
               '-Wl,--threads',
               '-Wl,--thread-count=4',
             ],
             'conditions': [
               ['release_valgrind_build==0', {
                 'target_conditions': [
                   ['_toolset=="target"', {
                     'ldflags': [
                       # There seems to be a conflict of --icf and -pie
                       # in gold which can generate crashy binaries. As
                       # a security measure, -pie takes precendence for
                       # now.
                       #'-Wl,--icf=safe',
                       '-Wl,--icf=none',
                     ],
                   }],
                 ],
               }],
             ],
           }],
           ['linux_use_gold_binary==1', {
             'variables': {
               'conditions': [
                 ['inside_chromium_build==1', {
                   # We pass the path to gold to the compiler.  gyp leaves
                   # unspecified what the cwd is when running the compiler,
                   # so the normal gyp path-munging fails us.  This hack
                   # gets the right path.
                   'gold_path': '<(PRODUCT_DIR)/../../third_party/gold',
                 }, {
                   'gold_path': '<(PRODUCT_DIR)/../../Source/WebKit/chromium/third_party/gold',
                 }]
               ]
             },
             'ldflags': [
               # Put our gold binary in the search path for the linker.
               '-B<(gold_path)',
             ],
           }],
         ],
       },
     }],
     # FreeBSD-specific options; note that most FreeBSD options are set above,
     # with Linux.
     ['OS=="freebsd"', {
       'target_defaults': {
         'ldflags': [
           '-Wl,--no-keep-memory',
         ],
       },
     }],
     # Android-specific options; note that most are set above with Linux.
     ['OS=="android"', {
       'variables': {
         # This is the id for the archived chrome symbols. Each build that
         # archives symbols is assigned an id which is then added to GYP_DEFINES.
         # This is written to the device log on crashes just prior to dropping a
         # tombstone. Tools can determine the location of the archived symbols
         # from the id.
         'chrome_symbols_id%': '',
         'conditions': [
           # Use shared stlport library when system one used.
           # Figure this out early since it needs symbols from libgcc.a, so it
           # has to be before that in the set of libraries.
           ['use_system_stlport==1', {
             'android_stlport_library': 'stlport',
           }, {
             'android_stlport_library': 'stlport_static',
           }],
         ],
         # Placing this variable here prevents from forking libvpx, used
         # by remoting.  Remoting is off, so it needn't built,
         # so forking it's deps seems like overkill.
         # But this variable need defined to properly run gyp.
         # A proper solution is to have an OS==android conditional
         # in third_party/libvpx/libvpx.gyp to define it.
         'libvpx_path': 'lib/linux/arm',
       },
       'target_defaults': {
         'variables': {
           'release_extra_cflags%': '',
         },
         'target_conditions': [
           # Settings for building device targets using Android's toolchain.
           # These are based on the setup.mk file from the Android NDK.
           #
           # The NDK Android executable link step looks as follows:
           #  $LDFLAGS
           #  $(TARGET_CRTBEGIN_DYNAMIC_O)  <-- crtbegin.o
           #  $(PRIVATE_OBJECTS)            <-- The .o that we built
           #  $(PRIVATE_STATIC_LIBRARIES)   <-- The .a that we built
           #  $(TARGET_LIBGCC)              <-- libgcc.a
           #  $(PRIVATE_SHARED_LIBRARIES)   <-- The .so that we built
           #  $(PRIVATE_LDLIBS)             <-- System .so
           #  $(TARGET_CRTEND_O)            <-- crtend.o
           #
           # For now the above are approximated for executables by adding
           # crtbegin.o to the end of the ldflags and 'crtend.o' to the end
           # of 'libraries'.
           #
           # The NDK Android shared library link step looks as follows:
           #  $LDFLAGS
           #  $(PRIVATE_OBJECTS)            <-- The .o that we built
           #  -l,--whole-archive
           #  $(PRIVATE_WHOLE_STATIC_LIBRARIES)
           #  -l,--no-whole-archive
           #  $(PRIVATE_STATIC_LIBRARIES)   <-- The .a that we built
           #  $(TARGET_LIBGCC)              <-- libgcc.a
           #  $(PRIVATE_SHARED_LIBRARIES)   <-- The .so that we built
           #  $(PRIVATE_LDLIBS)             <-- System .so
           #
           # For now, assume that whole static libraries are not needed.
           #
           # For both executables and shared libraries, add the proper
           # libgcc.a to the start of libraries which puts it in the
           # proper spot after .o and .a files get linked in.
           #
           # TODO: The proper thing to do longer-tem would be proper gyp
           # support for a custom link command line.
           ['_toolset=="target"', {
            'conditions': [
            ['build_with_mozilla==0', {
             'cflags!': [
               '-pthread',  # Not supported by Android toolchain.
             ],
             'cflags': [
               '-ffunction-sections',
               '-funwind-tables',
               '-g',
               '-fstack-protector',
               '-fno-short-enums',
               '-finline-limit=64',
               '-Wa,--noexecstack',
               '<@(release_extra_cflags)',
             ],
             'ldflags!': [
               '-pthread',  # Not supported by Android toolchain.
             ],
             'ldflags': [
               '-nostdlib',
               '-Wl,--no-undefined',
               # Don't export symbols from statically linked libraries.
               '-Wl,--exclude-libs=ALL',
             ],
             'libraries': [
               '-l<(android_stlport_library)',
               # Manually link the libgcc.a that the cross compiler uses.
               '<!(<(android_toolchain)/*-gcc -print-libgcc-file-name)',
               '-lc',
               '-ldl',
               '-lstdc++',
               '-lm',
             ],
             'conditions': [
               ['android_upstream_bringup==1', {
                 'defines': ['ANDROID_UPSTREAM_BRINGUP=1',],
               }],
               ['clang==1', {
                 'cflags': [
                   # Work around incompatibilities between bionic and clang
                   # headers.
                   '-D__compiler_offsetof=__builtin_offsetof',
                   '-Dnan=__builtin_nan',
                 ],
                 'conditions': [
                   ['target_arch=="arm"', {
                     'cflags': [
                       '-target arm-linux-androideabi',
                       '-mllvm -arm-enable-ehabi',
                     ],
                     'ldflags': [
                       '-target arm-linux-androideabi',
                     ],
                   }],
                   ['target_arch=="ia32"', {
                     'cflags': [
                       '-target x86-linux-androideabi',
                     ],
                     'ldflags': [
                       '-target x86-linux-androideabi',
                     ],
                   }],
                 ],
               }],
               ['android_build_type==0', {
                 'defines': [
                   # The NDK has these things, but doesn't define the constants
                   # to say that it does. Define them here instead.
                   'HAVE_SYS_UIO_H',
                 ],
                 'cflags': [
                   '--sysroot=<(android_ndk_sysroot)',
                 ],
                 'ldflags': [
                   '--sysroot=<(android_ndk_sysroot)',
                 ],
               }],
               ['android_build_type==1', {
                 'include_dirs': [
                   # OpenAL headers from the Android tree.
                   '<(android_src)/frameworks/wilhelm/include',
                 ],
                 'cflags': [
                   # Chromium builds its own (non-third-party) code with
                   # -Werror to make all warnings into errors. However, Android
                   # enables warnings that Chromium doesn't, so some of these
                   # extra warnings trip and break things.
                   # For now, we leave these warnings enabled but prevent them
                   # from being treated as errors.
                   #
                   # Things that are part of -Wextra:
                   '-Wno-error=extra', # Enabled by -Wextra, but no specific flag
                   '-Wno-error=ignored-qualifiers',
                   '-Wno-error=type-limits',
                   # Other things unrelated to -Wextra:
                   '-Wno-error=non-virtual-dtor',
                   '-Wno-error=sign-promo',
                 ],
                 'cflags_cc': [
                   # Disabling c++0x-compat should be handled in WebKit, but
                   # this currently doesn't work because gcc_version is not set
                   # correctly when building with the Android build system.
                   # TODO(torne): Fix this in WebKit.
                   '-Wno-error=c++0x-compat',
                 ],
               }],
               ['android_build_type==1 and chromium_code==0', {
                 'cflags': [
                   # There is a class of warning which:
                   #  1) Android always enables and also treats as errors
                   #  2) Chromium ignores in third party code
                   # For now, I am leaving these warnings enabled but preventing
                   # them from being treated as errors here.
                   '-Wno-error=address',
                   '-Wno-error=format-security',
                   '-Wno-error=non-virtual-dtor',
                   '-Wno-error=return-type',
                   '-Wno-error=sequence-point',
                 ],
               }],
               ['target_arch == "arm"', {
                 'ldflags': [
                   # Enable identical code folding to reduce size.
                   '-Wl,--icf=safe',
                 ],
               }],
               # 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==1', {
                 'cflags': [
                   # For libstdc++/include, which is used by stlport.
                   '-I<(android_src)/bionic',
                   '-I<(android_src)/external/stlport/stlport',
                 ],
               }, { # else: use_system_stlport!=1
                 'cflags': [
                   '-I<(android_ndk_root)/sources/cxx-stl/stlport/stlport',
                 ],
                 'conditions': [
                   ['target_arch=="arm" and armv7==1', {
                     'ldflags': [
                       '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/armeabi-v7a',
                     ],
                   }],
                   ['target_arch=="arm" and armv7==0', {
                     'ldflags': [
                       '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/armeabi',
                     ],
                   }],
                   ['target_arch=="ia32"', {
                     'ldflags': [
                       '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/x86',
                     ],
                   }],
                 ],
               }],
               ['target_arch=="ia32"', {
                 # The x86 toolchain currently has problems with stack-protector.
                 'cflags!': [
                   '-fstack-protector',
                 ],
                 '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_ndk_lib)/crtbegin_dynamic.o',
                 ],
                 'libraries': [
                   # crtend_android.o needs to be the last item in libraries.
                   # Do not add any libraries after this!
                   '<(android_ndk_lib)/crtend_android.o',
                 ],
               }],
               ['_type=="shared_library" or _type=="loadable_module"', {
                 'ldflags': [
                   '-Wl,-shared,-Bsymbolic',
                   # crtbegin_so.o should be the last item in ldflags.
                   '<(android_ndk_lib)/crtbegin_so.o',
                 ],
                 'libraries': [
                   # crtend_so.o needs to be the last item in libraries.
                   # Do not add any libraries after this!
                   '<(android_ndk_lib)/crtend_so.o',
                 ],
               }],
             ],
            }], # build_with_mozilla== 0
             ],
             'defines': [
               'ANDROID',
               '__GNU_SOURCE=1',  # Necessary for clone()
               'USE_STLPORT=1',
               '_STLP_USE_PTR_SPECIALIZATIONS=1',
               'CHROME_SYMBOLS_ID="<(chrome_symbols_id)"',
             ],
            }],
           # Settings for building host targets using the system toolchain.
           ['_toolset=="host"', {
             'cflags!': [
               # Due to issues in Clang build system, using ASan on 32-bit
               # binaries on x86_64 host is problematic.
               # TODO(eugenis): re-enable.
               '-faddress-sanitizer',
             ],
             'ldflags!': [
               '-faddress-sanitizer',
               '-Wl,-z,noexecstack',
               '-Wl,--gc-sections',
               '-Wl,-O1',
               '-Wl,--as-needed',
             ],
             'sources/': [
               ['exclude', '_android(_unittest)?\\.cc$'],
               ['exclude', '(^|/)android/']
             ],
           }],
         ],
       },
     }],
     ['OS=="solaris"', {
       'cflags!': ['-fvisibility=hidden'],
       'cflags_cc!': ['-fvisibility-inlines-hidden'],
     }],
     ['OS=="mac" or OS=="ios"', {
       'target_defaults': {
         'mac_bundle': 0,
         'xcode_settings': {
           'ALWAYS_SEARCH_USER_PATHS': 'NO',
           'GCC_C_LANGUAGE_STANDARD': 'c99',         # -std=c99
           'GCC_CW_ASM_SYNTAX': 'NO',                # No -fasm-blocks
           '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_OBJC_CALL_CXX_CDTORS': 'YES',        # -fobjc-call-cxx-cdtors
           'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',      # -fvisibility=hidden
           'GCC_THREADSAFE_STATICS': 'NO',           # -fno-threadsafe-statics
           'GCC_TREAT_WARNINGS_AS_ERRORS': 'YES',    # -Werror
           'GCC_VERSION': '4.2',
           'GCC_WARN_ABOUT_MISSING_NEWLINE': 'YES',  # -Wnewline-eof
           'USE_HEADERMAP': 'NO',
           'WARNING_CFLAGS': [
             '-Wall',
             '-Wendif-labels',
             '-Wextra',
             # Don't warn about unused function parameters.
             '-Wno-unused-parameter',
             # Don't warn about the "struct foo f = {0};" initialization
             # pattern.
             '-Wno-missing-field-initializers',
           ],
           'conditions': [
             ['chromium_mac_pch', {'GCC_PRECOMPILE_PREFIX_HEADER': 'YES'},
                                  {'GCC_PRECOMPILE_PREFIX_HEADER': 'NO'}
             ],
           ],
         },
         'target_conditions': [
           ['_type!="static_library"', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
           }],
           ['_mac_bundle', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
           }],
         ],  # target_conditions
       },  # target_defaults
     }],  # OS=="mac" or OS=="ios"
     ['OS=="mac"', {
       'target_defaults': {
         'variables': {
           # These should end with %, but there seems to be a bug with % in
           # variables that are intended to be set to different values in
           # different targets, like these.
           'mac_pie': 1,        # Most executables can be position-independent.
           'mac_real_dsym': 0,  # Fake .dSYMs are fine in most cases.
           # Strip debugging symbols from the target.
           'mac_strip': '<(mac_strip_release)',
         },
         'xcode_settings': {
           'GCC_DYNAMIC_NO_PIC': 'NO',               # No -mdynamic-no-pic
                                                     # (Equivalent to -fPIC)
           # MACOSX_DEPLOYMENT_TARGET maps to -mmacosx-version-min
           'MACOSX_DEPLOYMENT_TARGET': '<(mac_deployment_target)',
           # Keep pch files below xcodebuild/.
           'SHARED_PRECOMPS_DIR': '$(CONFIGURATION_BUILD_DIR)/SharedPrecompiledHeaders',
           'OTHER_CFLAGS': [
             '-fno-strict-aliasing',  # See http://crbug.com/32204
           ],
           'conditions': [
             ['clang==1', {
               'CC': '$(SOURCE_ROOT)/<(clang_dir)/clang',
               'LDPLUSPLUS': '$(SOURCE_ROOT)/<(clang_dir)/clang++',
               # Don't use -Wc++0x-extensions, which Xcode 4 enables by default
               # when buliding with clang. This warning is triggered when the
               # override keyword is used via the OVERRIDE macro from
               # base/compiler_specific.h.
               'CLANG_WARN_CXX0X_EXTENSIONS': 'NO',
               'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',
               'WARNING_CFLAGS': [
                 '-Wheader-hygiene',
                 # Don't die on dtoa code that uses a char as an array index.
                 # This is required solely for base/third_party/dmg_fp/dtoa.cc.
                 '-Wno-char-subscripts',
                 # Clang spots more unused functions.
                 '-Wno-unused-function',
                 # See comments on this flag higher up in this file.
                 '-Wno-unnamed-type-template-args',
                 # This (rightyfully) complains about 'override', which we use
                 # heavily.
                 '-Wno-c++11-extensions',
                 # Warns on switches on enums that cover all enum values but
                 # also contain a default: branch. Chrome is full of that.
                 '-Wno-covered-switch-default',
                 # TODO(thakis): Remove this.
                 '-Wno-implicit-conversion-floating-point-to-bool',
               ],
             }],
             ['clang==1 and clang_use_chrome_plugins==1', {
               'OTHER_CFLAGS': [
                 '<@(clang_chrome_plugins_flags)',
               ],
             }],
             ['clang==1 and clang_load!=""', {
               'OTHER_CFLAGS': [
                 '-Xclang', '-load', '-Xclang', '<(clang_load)',
               ],
             }],
             ['clang==1 and clang_add_plugin!=""', {
               'OTHER_CFLAGS': [
                 '-Xclang', '-add-plugin', '-Xclang', '<(clang_add_plugin)',
               ],
             }],
             ['clang==1 and "<(GENERATOR)"=="ninja"', {
               'OTHER_CFLAGS': [
                 # See http://crbug.com/110262
                 '-fcolor-diagnostics',
               ],
             }],
           ],
         },
         'conditions': [
           ['clang==1', {
             'variables': {
               'clang_dir': '../third_party/llvm-build/Release+Asserts/bin',
             },
           }],
           ['asan==1', {
             'xcode_settings': {
               'OTHER_CFLAGS': [
                 '-faddress-sanitizer',
               ],
             },
             'defines': [
               'ADDRESS_SANITIZER',
             ],
           }],
         ],
         'target_conditions': [
           ['_type!="static_library"', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
             'conditions': [
               ['asan==1', {
                 'xcode_settings': {
                   'OTHER_LDFLAGS': [
                     '-faddress-sanitizer',
                   ],
                 },
               }],
             ],
           }],
           ['_mac_bundle', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-ObjC']},
           }],
           ['_type=="executable"', {
             'postbuilds': [
               {
                 # Arranges for data (heap) pages to be protected against
                 # code execution when running on Mac OS X 10.7 ("Lion"), and
                 # ensures that the position-independent executable (PIE) bit
                 # is set for ASLR when running on Mac OS X 10.5 ("Leopard").
                 'variables': {
                   # Define change_mach_o_flags in a variable ending in _path
                   # so that GYP understands it's a path and performs proper
                   # relativization during dict merging.
                   'change_mach_o_flags':
                       'mac/change_mach_o_flags_from_xcode.sh',
                   'change_mach_o_flags_options%': [
                   ],
                   'target_conditions': [
                     ['mac_pie==0 or release_valgrind_build==1', {
                       # Don't enable PIE if it's unwanted. It's unwanted if
                       # the target specifies mac_pie=0 or if building for
                       # Valgrind, because Valgrind doesn't understand slide.
                       # See the similar mac_pie/release_valgrind_build check
                       # below.
                       'change_mach_o_flags_options': [
                         '--no-pie',
                       ],
                     }],
                   ],
                 },
                 'postbuild_name': 'Change Mach-O Flags',
                 'action': [
                    '$(srcdir)$(os_sep)build$(os_sep)<(change_mach_o_flags)',
                   '>@(change_mach_o_flags_options)',
                 ],
               },
             ],
             'conditions': [
               ['asan==1', {
                 'variables': {
                  'asan_saves_file': 'asan.saves',
                 },
                 'xcode_settings': {
                   'CHROMIUM_STRIP_SAVE_FILE': '<(asan_saves_file)',
                 },
               }],
             ],
             'target_conditions': [
               ['mac_pie==1 and release_valgrind_build==0', {
                 # Turn on position-independence (ASLR) for executables. When
                 # PIE is on for the Chrome executables, the framework will
                 # also be subject to ASLR.
                 # Don't do this when building for Valgrind, because Valgrind
                 # doesn't understand slide. TODO: Make Valgrind on Mac OS X
                 # understand slide, and get rid of the Valgrind check.
                 'xcode_settings': {
                   'OTHER_LDFLAGS': [
                     '-Wl,-pie',  # Position-independent executable (MH_PIE)
                   ],
                 },
               }],
             ],
           }],
           ['(_type=="executable" or _type=="shared_library" or \
              _type=="loadable_module") and mac_strip!=0', {
             'target_conditions': [
               ['mac_real_dsym == 1', {
                 # To get a real .dSYM bundle produced by dsymutil, set the
                 # debug information format to dwarf-with-dsym.  Since
                 # strip_from_xcode will not be used, set Xcode to do the
                 # stripping as well.
                 'configurations': {
                   'Release_Base': {
                     'xcode_settings': {
                       'DEBUG_INFORMATION_FORMAT': 'dwarf-with-dsym',
                       'DEPLOYMENT_POSTPROCESSING': 'YES',
                       'STRIP_INSTALLED_PRODUCT': 'YES',
                       'target_conditions': [
                         ['_type=="shared_library" or _type=="loadable_module"', {
                           # The Xcode default is to strip debugging symbols
                           # only (-S).  Local symbols should be stripped as
                           # well, which will be handled by -x.  Xcode will
                           # continue to insert -S when stripping even when
                           # additional flags are added with STRIPFLAGS.
                           'STRIPFLAGS': '-x',
                         }],  # _type=="shared_library" or _type=="loadable_module"'
                       ],  # target_conditions
                     },  # xcode_settings
                   },  # configuration "Release"
                 },  # configurations
               }, {  # mac_real_dsym != 1
                 # To get a fast fake .dSYM bundle, use a post-build step to
                 # produce the .dSYM and strip the executable.  strip_from_xcode
                 # only operates in the Release configuration.
                 'postbuilds': [
                   {
                     'variables': {
                       # Define strip_from_xcode in a variable ending in _path
                       # so that gyp understands it's a path and performs proper
                       # relativization during dict merging.
                       'strip_from_xcode': 'mac/strip_from_xcode',
                     },
                     'postbuild_name': 'Strip If Needed',
                     'action': ['$(srcdir)$(os_sep)build$(os_sep)<(strip_from_xcode)'],
                   },
                 ],  # postbuilds
               }],  # mac_real_dsym
             ],  # target_conditions
           }],  # (_type=="executable" or _type=="shared_library" or
                #  _type=="loadable_module") and mac_strip!=0
         ],  # target_conditions
       },  # target_defaults
     }],  # OS=="mac"
     ['OS=="ios"', {
       'target_defaults': {
         'xcode_settings' : {
           'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',
           # This next block is mostly common with the 'mac' section above,
           # but keying off (or setting) 'clang' isn't valid for iOS as it
           # also seems to mean using the custom build of clang.
           # Don't use -Wc++0x-extensions, which Xcode 4 enables by default
           # when buliding with clang. This warning is triggered when the
           # override keyword is used via the OVERRIDE macro from
           # base/compiler_specific.h.
           'CLANG_WARN_CXX0X_EXTENSIONS': 'NO',
           'WARNING_CFLAGS': [
             '-Wheader-hygiene',
             # Don't die on dtoa code that uses a char as an array index.
             # This is required solely for base/third_party/dmg_fp/dtoa.cc.
             '-Wno-char-subscripts',
             # Clang spots more unused functions.
             '-Wno-unused-function',
             # See comments on this flag higher up in this file.
             '-Wno-unnamed-type-template-args',
             # This (rightyfully) complains about 'override', which we use
             # heavily.
             '-Wno-c++11-extensions',
           ],
         },
         'target_conditions': [
           ['_type=="executable"', {
             'configurations': {
               'Release_Base': {
                 'xcode_settings': {
                   'DEPLOYMENT_POSTPROCESSING': 'YES',
                   'STRIP_INSTALLED_PRODUCT': 'YES',
                 },
               },
             },
             'xcode_settings': {
               'conditions': [
                 ['chromium_ios_signing', {
                   # iOS SDK wants everything for device signed.
                   'CODE_SIGN_IDENTITY[sdk=iphoneos*]': 'iPhone Developer',
                 }, {
                   'CODE_SIGNING_REQUIRED': 'NO',
                   'CODE_SIGN_IDENTITY[sdk=iphoneos*]': '',
                 }],
               ],
             },
           }],
         ],  # target_conditions
       },  # target_defaults
     }],  # OS=="ios"
     ['OS=="win"', {
       'target_defaults': {
         'defines': [
           '_WIN32_WINNT=0x0602',
           'WINVER=0x0602',
           'WIN32',
           '_WINDOWS',
           'NOMINMAX',
           'PSAPI_VERSION=1',
           '_CRT_RAND_S',
           'CERT_CHAIN_PARA_HAS_EXTRA_FIELDS',
           'WIN32_LEAN_AND_MEAN',
           '_ATL_NO_OPENGL',
         ],
         'conditions': [
           ['buildtype=="Official"', {
               # In official builds, targets can self-select an optimization
               # level by defining a variable named 'optimize', and setting it
               # to one of
               # - "size", optimizes for minimal code size - the default.
               # - "speed", optimizes for speed over code size.
               # - "max", whole program optimization and link-time code
               #   generation. This is very expensive and should be used
               #   sparingly.
               'variables': {
                 'optimize%': 'size',
               },
               'target_conditions': [
                 ['optimize=="size"', {
                     'msvs_settings': {
                       'VCCLCompilerTool': {
                         # 1, optimizeMinSpace, Minimize Size (/O1)
                         'Optimization': '1',
                         # 2, favorSize - Favor small code (/Os)
                         'FavorSizeOrSpeed': '2',
                       },
                     },
                   },
                 ],
                 ['optimize=="speed"', {
                     'msvs_settings': {
                       'VCCLCompilerTool': {
                         # 2, optimizeMaxSpeed, Maximize Speed (/O2)
                         'Optimization': '2',
                         # 1, favorSpeed - Favor fast code (/Ot)
                         'FavorSizeOrSpeed': '1',
                       },
                     },
                   },
                 ],
                 ['optimize=="max"', {
                     'msvs_settings': {
                       'VCCLCompilerTool': {
                         # 2, optimizeMaxSpeed, Maximize Speed (/O2)
                         'Optimization': '2',
                         # 1, favorSpeed - Favor fast code (/Ot)
                         'FavorSizeOrSpeed': '1',
                         # This implies link time code generation.
                         'WholeProgramOptimization': 'true',
                       },
                     },
                   },
                 ],
               ],
             },
           ],
           ['component=="static_library"', {
             'defines': [
               '_HAS_EXCEPTIONS=0',
             ],
           }],
           ['MSVS_VERSION=="2008"', {
             'defines': [
               '_HAS_TR1=0',
             ],
           }],
           ['secure_atl', {
             'defines': [
               '_SECURE_ATL',
             ],
           }],
         ],
         'msvs_system_include_dirs': [
           '<(windows_sdk_path)/Include/shared',
           '<(windows_sdk_path)/Include/um',
           '<(windows_sdk_path)/Include/winrt',
           '<(directx_sdk_path)/Include',
           '$(VSInstallDir)/VC/atlmfc/include',
         ],
         'msvs_cygwin_dirs': ['<(DEPTH)/third_party/cygwin'],
         'msvs_disabled_warnings': [4351, 4396, 4503, 4819,
           # TODO(maruel): These warnings are level 4. They will be slowly
           # removed as code is fixed.
 , 4121, 4125, 4127, 4130, 4131, 4189, 4201, 4238, 4244, 4245,
 , 4355, 4428, 4481, 4505, 4510, 4512, 4530, 4610, 4611, 4701,
 , 4706,
         ],
         'msvs_settings': {
           'VCCLCompilerTool': {
             'AdditionalOptions': ['/MP'],
             'MinimalRebuild': 'false',
             'BufferSecurityCheck': 'true',
             'EnableFunctionLevelLinking': 'true',
             'RuntimeTypeInfo': 'false',
             'WarningLevel': '4',
             'WarnAsError': 'true',
             'DebugInformationFormat': '3',
             'conditions': [
               ['component=="shared_library"', {
                 'ExceptionHandling': '1',  # /EHsc
               }, {
                 'ExceptionHandling': '0',
               }],
             ],
           },
           'VCLibrarianTool': {
             'AdditionalOptions': ['/ignore:4221'],
             'AdditionalLibraryDirectories': [
               '<(directx_sdk_path)/Lib/x86',
               '<(windows_sdk_path)/Lib/win8/um/x86',
             ],
           },
           'VCLinkerTool': {
             'AdditionalDependencies': [
               'wininet.lib',
               'dnsapi.lib',
               'version.lib',
               'msimg32.lib',
               'ws2_32.lib',
               'usp10.lib',
               'psapi.lib',
               'dbghelp.lib',
               'winmm.lib',
               'shlwapi.lib',
             ],
             'conditions': [
               ['msvs_express', {
                 # Explicitly required when using the ATL with express
                 'AdditionalDependencies': [
                   'atlthunk.lib',
                 ],
                 # ATL 8.0 included in WDK 7.1 makes the linker to generate
                 # almost eight hundred LNK4254 and LNK4078 warnings:
                 #   - warning LNK4254: section 'ATL' (50000040) merged into
                 #     '.rdata' (40000040) with different attributes
                 #   - warning LNK4078: multiple 'ATL' sections found with
                 #     different attributes
                 'AdditionalOptions': ['/ignore:4254', '/ignore:4078'],
               }],
               ['MSVS_VERSION=="2005e"', {
                 # Non-express versions link automatically to these
                 'AdditionalDependencies': [
                   'advapi32.lib',
                   'comdlg32.lib',
                   'ole32.lib',
                   'shell32.lib',
                   'user32.lib',
                   'winspool.lib',
                 ],
               }],
             ],
             'AdditionalLibraryDirectories': [
               '<(directx_sdk_path)/Lib/x86',
               '<(windows_sdk_path)/Lib/win8/um/x86',
             ],
             'GenerateDebugInformation': 'true',
             'MapFileName': '$(OutDir)\\$(TargetName).map',
             'ImportLibrary': '$(OutDir)\\lib\\$(TargetName).lib',
             'FixedBaseAddress': '1',
             # SubSystem values:
             #   0 == not set
             #   1 == /SUBSYSTEM:CONSOLE
             #   2 == /SUBSYSTEM:WINDOWS
             # Most of the executables we'll ever create are tests
             # and utilities with console output.
             'SubSystem': '1',
           },
           'VCMIDLTool': {
             'GenerateStublessProxies': 'true',
             'TypeLibraryName': '$(InputName).tlb',
             'OutputDirectory': '$(IntDir)',
             'HeaderFileName': '$(InputName).h',
             'DLLDataFileName': '$(InputName).dlldata.c',
             'InterfaceIdentifierFileName': '$(InputName)_i.c',
             'ProxyFileName': '$(InputName)_p.c',
           },
           'VCResourceCompilerTool': {
             'Culture' : '1033',
             'AdditionalIncludeDirectories': [
               '<(DEPTH)',
               '<(SHARED_INTERMEDIATE_DIR)',
             ],
           },
         },
       },
     }],
     ['disable_nacl==1', {
       'target_defaults': {
         'defines': [
           'DISABLE_NACL',
         ],
       },
     }],
     ['OS=="win" and msvs_use_common_linker_extras', {
       'target_defaults': {
         'msvs_settings': {
           'VCLinkerTool': {
             'DelayLoadDLLs': [
               'dbghelp.dll',
               'dwmapi.dll',
               'shell32.dll',
               'uxtheme.dll',
             ],
           },
         },
         'configurations': {
           'x86_Base': {
             'msvs_settings': {
               'VCLinkerTool': {
                 'AdditionalOptions': [
                   '/safeseh',
                   '/dynamicbase',
                   '/ignore:4199',
                   '/ignore:4221',
                   '/nxcompat',
                 ],
               },
             },
           },
           'x64_Base': {
             'msvs_settings': {
               'VCLinkerTool': {
                 'AdditionalOptions': [
                   # safeseh is not compatible with x64
                   '/dynamicbase',
                   '/ignore:4199',
                   '/ignore:4221',
                   '/nxcompat',
                 ],
               },
             },
           },
         },
       },
     }],
     ['enable_new_npdevice_api==1', {
       'target_defaults': {
         'defines': [
           'ENABLE_NEW_NPDEVICE_API',
         ],
       },
     }],
     ['clang==1', {
       'conditions': [
         ['OS=="android"', {
           # Android could use the goma with clang.
           'make_global_settings': [
             ['CC', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} ${CHROME_SRC}/<(make_clang_dir)/bin/clang)'],
             ['CXX', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} ${CHROME_SRC}/<(make_clang_dir)/bin/clang++)'],
             ['LINK', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} ${CHROME_SRC}/<(make_clang_dir)/bin/clang++)'],
             ['CC.host', '$(CC)'],
             ['CXX.host', '$(CXX)'],
             ['LINK.host', '$(LINK)'],
           ],
         }, {
           'make_global_settings': [
             ['CC', '<(make_clang_dir)/bin/clang'],
             ['CXX', '<(make_clang_dir)/bin/clang++'],
             ['LINK', '$(CXX)'],
             ['CC.host', '$(CC)'],
             ['CXX.host', '$(CXX)'],
             ['LINK.host', '$(LINK)'],
           ],
         }],
       ],
     }],
     ['OS=="android" and clang==0', {
       # Hardcode the compiler names in the Makefile so that
       # it won't depend on the environment at make time.
       'make_global_settings': [
         ['CC', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-gcc)'],
         ['CXX', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-g++)'],
         ['LINK', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-gcc)'],
         ['CC.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which gcc))'],
         ['CXX.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which g++))'],
         ['LINK.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which g++))'],
       ],
     }],
   ],
   'xcode_settings': {
     # DON'T ADD ANYTHING NEW TO THIS BLOCK UNLESS YOU REALLY REALLY NEED IT!
     # This block adds *project-wide* configuration settings to each project
     # file.  It's almost always wrong to put things here.  Specify your
     # custom xcode_settings in target_defaults to add them to targets instead.
     'conditions': [
       # In an Xcode Project Info window, the "Base SDK for All Configurations"
       # setting sets the SDK on a project-wide basis. In order to get the
       # configured SDK to show properly in the Xcode UI, SDKROOT must be set
       # here at the project level.
       ['OS=="mac"', {
         'conditions': [
           ['mac_sdk_path==""', {
             'SDKROOT': 'macosx<(mac_sdk)',  # -isysroot
           }, {
             'SDKROOT': '<(mac_sdk_path)',  # -isysroot
           }],
         ],
       }],
       ['OS=="ios"', {
         'conditions': [
           ['ios_sdk_path==""', {
             'SDKROOT': 'iphoneos<(ios_sdk)',  # -isysroot
           }, {
             'SDKROOT': '<(ios_sdk_path)',  # -isysroot
           }],
         ],
       }],
       ['OS=="ios"', {
         # Just build armv7 since iOS 4.3+ only supports armv7.
         'ARCHS': '$(ARCHS_UNIVERSAL_IPHONE_OS)',
         'IPHONEOS_DEPLOYMENT_TARGET': '<(ios_deployment_target)',
         # Target both iPhone and iPad.
         'TARGETED_DEVICE_FAMILY': '1,2',
       }],
     ],
     # The Xcode generator will look for an xcode_settings section at the root
     # of each dict and use it to apply settings on a file-wide basis.  Most
     # settings should not be here, they should be in target-specific
     # xcode_settings sections, or better yet, should use non-Xcode-specific
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }

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