src/build/common.gypi - cobalt - Git at Google

 # 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.

 #####################################################################
 # If you modify this file, PLEASE REMEMBER TO UPDATE
 # //cobalt/build/config/base.gni or //starboard/build/config/base.gni
 # AS WELL
 #####################################################################

 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_cobalt,
 # since gyp_cobalt is automatically forcing its inclusion.
 {
   # Variables expected to be overriden in the platform's gyp_configuration.gypi.
   'variables': {
     # Putting a variables dict inside another variables dict looks kind of
     # weird.  This is done so that 'host_arch', 'android_build_type', 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': {
           'host_arch%':
             'x64', # Building on any other arch is not supported
         },

         # Copy conditionally-set variables out one scope.
         'host_arch%': '<(host_arch)',

         # Default architecture we're building for is the architecture we're
         # building on.
         'target_arch%': '<(host_arch)',

         # 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,
       },

       # Copy conditionally-set variables out one scope.
       'host_arch%': '<(host_arch)',
       'target_arch%': '<(target_arch)',
       'android_build_type%': '<(android_build_type)',

       # Set ARM-v7 compilation flags
       'armv7%': 0,

       # Set Neon compilation flags (only meaningful if armv7==1).
       'arm_neon%': 1,

       # The system root for cross-compiles. Default: none.
       'sysroot%': '',

       # Use system libjpeg. Note that the system's libjepg will be used even if
       # use_libjpeg_turbo is set.
       'use_system_libjpeg%': 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',

       # Enable building with ASAN (Clang's -fsanitize=address option).
       # -fsanitize=address 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 -fsanitize=thread option).
       # -fsanitize=thread only works with clang, but tsan=1 implies clang=1
       # See http://clang.llvm.org/docs/ThreadSanitizer.html
       'tsan%': 0,

       # Set this to true when building with Clang.
       # See http://code.google.com/p/chromium/wiki/Clang for details.
       'clang%': 0,

       'os_posix%': 0,
       'os_bsd%': 0,
     },

     # Make sure that cobalt is defined. This is needed in
     # the case where the code is built using Chromium stock
     # build tools.
     'cobalt%': 0,

     # Copy conditionally-set variables out one scope.
     'target_arch%': '<(target_arch)',
     'host_arch%': '<(host_arch)',
     'library%': 'static_library',
     'os_bsd%': '<(os_bsd)',
     'os_posix%': '<(os_posix)',
     'armv7%': '<(armv7)',
     'arm_neon%': '<(arm_neon)',
     'sysroot%': '<(sysroot)',
     'component%': '<(component)',
     'asan%': '<(asan)',
     'tsan%': '<(tsan)',
     'use_system_libjpeg%': '<(use_system_libjpeg)',
     'android_build_type%': '<(android_build_type)',

     # Use system protobuf instead of bundled one.
     'use_system_protobuf%': 0,

     # 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',

     # 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%': '',

     # 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',

     # .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,

     # Crashpad relies on excluding files in GYP based on platform specific
     # names, so it has its own set of filename_rules.gypi located under
     # "third_party/mini_chromium/build/".
     'crashpad_code%': 0,

     # TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
     'enable_wexit_time_destructors%': 0,

     # Native Client is enabled by default.
     'disable_nacl%': 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,

     'windows_sdk_path%': 'C:/Program Files (x86)/Windows Kits/10',

     'conditions': [
       ['target_arch=="android"', {
         # Location of Android NDK.
         'variables': {
           'variables': {
             'variables': {
               'android_ndk_root%': '<!pymod_do_main(starboard.build.gyp_functions getenv ANDROID_NDK_ROOT)',
             },
             'android_ndk_root%': '<(android_ndk_root)',
             'conditions': [
               ['target_arch == "x86"', {
                 'android_app_abi%': 'x86',
                 'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-9/arch-x86',
               }],
               ['target_arch=="arm" or (OS=="lb_shell" and target_arch=="android")', {
                 '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`',

         # Disable Native Client.
         'disable_nacl%': 1,

         # 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_icu%': '<(android_build_type)',
         'use_system_stlport%': '<(android_build_type)',

         # Copy it out one scope.
         'android_build_type%': '<(android_build_type)',
       }],  # target_arch=="android"

       ['asan==1 and OS!="win"', {
         'clang%': 1,
       }],
       ['tsan==1', {
         'clang%': 1,
       }],
     ],
   },
   '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)',

       # The crashpad_code variable operates the same way as described above for
       # the chromium_code variable.
       'crashpad_code%': '<(crashpad_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%': '',

       # 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,

       'pnacl_compile_flags': [
         # pnacl uses the clang compiler so we need to supress all the
         # same warnings as we do for clang.
         # TODO(sbc): Remove these if/when they are removed from the clang
         # build.
         '-Wno-unused-function',
         '-Wno-char-subscripts',
         '-Wno-c++11-extensions',
         '-Wno-unnamed-type-template-args',
       ],

       # 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)

       # 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
     },
     'defines': [
       'USE_OPENSSL=1',
     ],
     'conditions': [
       ['component=="shared_library"', {
         'defines': ['COMPONENT_BUILD'],
       }],
     ],  # 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', {
         'includes': [
            # Rules for excluding e.g. foo_win.cc from the build on non-Windows.
           'filename_rules.gypi',
         ],
       }],
       ['crashpad_code!=0', {
         'includes': [
            # Rules for excluding e.g. foo_win.cc from the build on non-Windows.
           '<(DEPTH)/third_party/mini_chromium/build/filename_rules.gypi',
         ],
       }],
       ['chromium_code!=0 or crashpad_code!=0', {
         # In Chromium code, we define __STDC_foo_MACROS in order to get the
         # C99 macros on Mac and Linux.
         'defines': [
           '__STDC_CONSTANT_MACROS',
           '__STDC_FORMAT_MACROS',
         ],
         'conditions': [
           ['(OS == "win" or target_arch=="xb1") and component=="shared_library"', {
             'msvs_disabled_warnings': [
               4251,  # class 'std::xx' needs to have dll-interface.
               4715,  # Not all control paths return a value.
             ],
           }],
         ],
       }],
     ],  # target_conditions for 'target_defaults'
   },
 }
	# 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.

	#####################################################################
	# If you modify this file, PLEASE REMEMBER TO UPDATE
	# //cobalt/build/config/base.gni or //starboard/build/config/base.gni
	# AS WELL
	#####################################################################

	# IMPORTANT:
	# Please don't directly include this file if you are building via gyp_cobalt,
	# since gyp_cobalt is automatically forcing its inclusion.
	{
	# Variables expected to be overriden in the platform's gyp_configuration.gypi.
	'variables': {
	# Putting a variables dict inside another variables dict looks kind of
	# weird. This is done so that 'host_arch', 'android_build_type', 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': {
	'host_arch%':
	'x64', # Building on any other arch is not supported
	},

	# Copy conditionally-set variables out one scope.
	'host_arch%': '<(host_arch)',

	# Default architecture we're building for is the architecture we're
	# building on.
	'target_arch%': '<(host_arch)',

	# 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,
	},

	# Copy conditionally-set variables out one scope.
	'host_arch%': '<(host_arch)',
	'target_arch%': '<(target_arch)',
	'android_build_type%': '<(android_build_type)',

	# Set ARM-v7 compilation flags
	'armv7%': 0,

	# Set Neon compilation flags (only meaningful if armv7==1).
	'arm_neon%': 1,

	# The system root for cross-compiles. Default: none.
	'sysroot%': '',

	# Use system libjpeg. Note that the system's libjepg will be used even if
	# use_libjpeg_turbo is set.
	'use_system_libjpeg%': 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',

	# Enable building with ASAN (Clang's -fsanitize=address option).
	# -fsanitize=address 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 -fsanitize=thread option).
	# -fsanitize=thread only works with clang, but tsan=1 implies clang=1
	# See http://clang.llvm.org/docs/ThreadSanitizer.html
	'tsan%': 0,

	# Set this to true when building with Clang.
	# See http://code.google.com/p/chromium/wiki/Clang for details.
	'clang%': 0,

	'os_posix%': 0,
	'os_bsd%': 0,
	},

	# Make sure that cobalt is defined. This is needed in
	# the case where the code is built using Chromium stock
	# build tools.
	'cobalt%': 0,

	# Copy conditionally-set variables out one scope.
	'target_arch%': '<(target_arch)',
	'host_arch%': '<(host_arch)',
	'library%': 'static_library',
	'os_bsd%': '<(os_bsd)',
	'os_posix%': '<(os_posix)',
	'armv7%': '<(armv7)',
	'arm_neon%': '<(arm_neon)',
	'sysroot%': '<(sysroot)',
	'component%': '<(component)',
	'asan%': '<(asan)',
	'tsan%': '<(tsan)',
	'use_system_libjpeg%': '<(use_system_libjpeg)',
	'android_build_type%': '<(android_build_type)',

	# Use system protobuf instead of bundled one.
	'use_system_protobuf%': 0,

	# 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',

	# 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%': '',

	# 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',

	# .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,

	# Crashpad relies on excluding files in GYP based on platform specific
	# names, so it has its own set of filename_rules.gypi located under
	# "third_party/mini_chromium/build/".
	'crashpad_code%': 0,

	# TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
	'enable_wexit_time_destructors%': 0,

	# Native Client is enabled by default.
	'disable_nacl%': 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,

	'windows_sdk_path%': 'C:/Program Files (x86)/Windows Kits/10',

	'conditions': [
	['target_arch=="android"', {
	# Location of Android NDK.
	'variables': {
	'variables': {
	'variables': {
	'android_ndk_root%': '<!pymod_do_main(starboard.build.gyp_functions getenv ANDROID_NDK_ROOT)',
	},
	'android_ndk_root%': '<(android_ndk_root)',
	'conditions': [
	['target_arch == "x86"', {
	'android_app_abi%': 'x86',
	'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-9/arch-x86',
	}],
	['target_arch=="arm" or (OS=="lb_shell" and target_arch=="android")', {
	'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`',

	# Disable Native Client.
	'disable_nacl%': 1,

	# 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_icu%': '<(android_build_type)',
	'use_system_stlport%': '<(android_build_type)',

	# Copy it out one scope.
	'android_build_type%': '<(android_build_type)',
	}], # target_arch=="android"

	['asan==1 and OS!="win"', {
	'clang%': 1,
	}],
	['tsan==1', {
	'clang%': 1,
	}],
	],
	},
	'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)',

	# The crashpad_code variable operates the same way as described above for
	# the chromium_code variable.
	'crashpad_code%': '<(crashpad_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%': '',

	# 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,

	'pnacl_compile_flags': [
	# pnacl uses the clang compiler so we need to supress all the
	# same warnings as we do for clang.
	# TODO(sbc): Remove these if/when they are removed from the clang
	# build.
	'-Wno-unused-function',
	'-Wno-char-subscripts',
	'-Wno-c++11-extensions',
	'-Wno-unnamed-type-template-args',
	],

	# 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)

	# 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
	},
	'defines': [
	'USE_OPENSSL=1',
	],
	'conditions': [
	['component=="shared_library"', {
	'defines': ['COMPONENT_BUILD'],
	}],
	], # 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', {
	'includes': [
	# Rules for excluding e.g. foo_win.cc from the build on non-Windows.
	'filename_rules.gypi',
	],
	}],
	['crashpad_code!=0', {
	'includes': [
	# Rules for excluding e.g. foo_win.cc from the build on non-Windows.
	'<(DEPTH)/third_party/mini_chromium/build/filename_rules.gypi',
	],
	}],
	['chromium_code!=0 or crashpad_code!=0', {
	# In Chromium code, we define __STDC_foo_MACROS in order to get the
	# C99 macros on Mac and Linux.
	'defines': [
	'__STDC_CONSTANT_MACROS',
	'__STDC_FORMAT_MACROS',
	],
	'conditions': [
	['(OS == "win" or target_arch=="xb1") and component=="shared_library"', {
	'msvs_disabled_warnings': [
	4251, # class 'std::xx' needs to have dll-interface.
	4715, # Not all control paths return a value.
	],
	}],
	],
	}],
	], # target_conditions for 'target_defaults'
	},
	}