{

  'variables': {

    'target_arch%': 'ia32',          # set v8's target architecture

    'host_arch%': 'ia32',            # set v8's host architecture

    'uv_library%': 'static_library', # allow override to 'shared_library' for DLL/.so builds

    'msvs_multi_core_compile': '0',  # we do enable multicore compiles, but not using the V8 way

  },

  'target_defaults': {

    'default_configuration': 'Debug',

    'configurations': {

      'Debug': {

        'defines': [ 'DEBUG', '_DEBUG' ],

        'cflags': [ '-g' ],

        'msvs_settings': {

          'VCCLCompilerTool': {

            'target_conditions': [

              ['uv_library=="static_library"', {

                'RuntimeLibrary': 1, # /MTd static debug

              }, {

                'RuntimeLibrary': 3, # /MDd DLL debug

              }],

            ],

            'Optimization': 0, # /Od, no optimization

            'MinimalRebuild': 'false',

            'OmitFramePointers': 'false',

            'BasicRuntimeChecks': 3, # /RTC1

          },

          'VCLinkerTool': {

            'LinkIncremental': 2, # enable incremental linking

          },

        },

        'xcode_settings': {

          'GCC_OPTIMIZATION_LEVEL': '0',

        },

        'conditions': [

          ['OS != "zos"', {

            'cflags': [ '-O0', '-fwrapv' ]

          }],

          ['OS == "android"', {

            'cflags': [ '-fPIE' ],

            'ldflags': [ '-fPIE', '-pie' ]

          }]

        ]

      },

      'Release': {

        'defines': [ 'NDEBUG' ],

        'cflags': [

          '-O3',

        ],

        'msvs_settings': {

          'VCCLCompilerTool': {

            'target_conditions': [

              ['uv_library=="static_library"', {

                'RuntimeLibrary': 0, # /MT static release

              }, {

                'RuntimeLibrary': 2, # /MD DLL release

              }],

            ],

            'Optimization': 3, # /Ox, full optimization

            'FavorSizeOrSpeed': 1, # /Ot, favour speed over size

            'InlineFunctionExpansion': 2, # /Ob2, inline anything eligible

            'WholeProgramOptimization': 'true', # /GL, whole program optimization, needed for LTCG

            'OmitFramePointers': 'true',

            'EnableFunctionLevelLinking': 'true',

            'EnableIntrinsicFunctions': 'true',

          },

          'VCLibrarianTool': {

            'AdditionalOptions': [

              '/LTCG', # link time code generation

            ],

          },

          'VCLinkerTool': {

            'LinkTimeCodeGeneration': 1, # link-time code generation

            'OptimizeReferences': 2, # /OPT:REF

            'EnableCOMDATFolding': 2, # /OPT:ICF

            'LinkIncremental': 1, # disable incremental linking

          },

        },

        'conditions': [

          ['OS != "zos"', {

            'cflags': [

              '-fomit-frame-pointer',

              '-fdata-sections',

              '-ffunction-sections',

            ],

          }],

        ]

      }

    },

    'msvs_settings': {

      'VCCLCompilerTool': {

        'StringPooling': 'true', # pool string literals

        'DebugInformationFormat': 3, # Generate a PDB

        'WarningLevel': 3,

        'BufferSecurityCheck': 'true',

        'ExceptionHandling': 1, # /EHsc

        'SuppressStartupBanner': 'true',

        'WarnAsError': 'false',

        'AdditionalOptions': [

           '/MP', # compile across multiple CPUs

         ],

      },

      'VCLibrarianTool': {

      },

      'VCLinkerTool': {

        'GenerateDebugInformation': 'true',

        'RandomizedBaseAddress': 2, # enable ASLR

        'DataExecutionPrevention': 2, # enable DEP

        'AllowIsolation': 'true',

        'SuppressStartupBanner': 'true',

        'target_conditions': [

          ['_type=="executable"', {

            'SubSystem': 1, # console executable

          }],

        ],

      },

    },

    'conditions': [

      ['OS == "win"', {

        'msvs_cygwin_shell': 0, # prevent actions from trying to use cygwin

        'defines': [

          'WIN32',

          # we don't really want VC++ warning us about

          # how dangerous C functions are...

          '_CRT_SECURE_NO_DEPRECATE',

          # ... or that C implementations shouldn't use

          # POSIX names

          '_CRT_NONSTDC_NO_DEPRECATE',

        ],

        'target_conditions': [

          ['target_arch=="x64"', {

            'msvs_configuration_platform': 'x64'

          }]

        ]

      }],

      ['OS in "freebsd dragonflybsd linux openbsd solaris android aix"', {

        'cflags': [ '-Wall' ],

        'cflags_cc': [ '-fno-rtti', '-fno-exceptions' ],

        'target_conditions': [

          ['_type=="static_library"', {

            'standalone_static_library': 1, # disable thin archive which needs binutils >= 2.19

          }],

        ],

        'conditions': [

          [ 'host_arch != target_arch and target_arch=="ia32"', {

            'cflags': [ '-m32' ],

            'ldflags': [ '-m32' ],

          }],

          [ 'target_arch=="x32"', {

            'cflags': [ '-mx32' ],

            'ldflags': [ '-mx32' ],

          }],

          [ 'OS=="linux"', {

            'cflags': [ '-ansi' ],

          }],

          [ 'OS=="solaris"', {

            'cflags': [ '-pthreads' ],

            'ldflags': [ '-pthreads' ],

          }],

          [ 'OS not in "solaris android zos"', {

            'cflags': [ '-pthread' ],

            'ldflags': [ '-pthread' ],

          }],

          [ 'OS=="aix" and target_arch=="ppc64"', {

            'cflags': [ '-maix64' ],

            'ldflags': [ '-maix64' ],

          }],

        ],

      }],

      ['OS=="mac"', {

        'xcode_settings': {

          'ALWAYS_SEARCH_USER_PATHS': 'NO',

          'GCC_CW_ASM_SYNTAX': 'NO',                # No -fasm-blocks

          'GCC_DYNAMIC_NO_PIC': 'NO',               # No -mdynamic-no-pic

                                                    # (Equivalent to -fPIC)

          'GCC_ENABLE_CPP_EXCEPTIONS': 'NO',        # -fno-exceptions

          'GCC_ENABLE_CPP_RTTI': 'NO',              # -fno-rtti

          'GCC_ENABLE_PASCAL_STRINGS': 'NO',        # No -mpascal-strings

          'GCC_THREADSAFE_STATICS': 'NO',           # -fno-threadsafe-statics

          'PREBINDING': 'NO',                       # No -Wl,-prebind

          'USE_HEADERMAP': 'NO',

          'WARNING_CFLAGS': [

            '-Wall',

            '-Wendif-labels',

            '-W',

            '-Wno-unused-parameter',

            '-Wstrict-prototypes',

          ],

        },

        'conditions': [

          ['target_arch=="ia32"', {

            'xcode_settings': {'ARCHS': ['i386']},

          }],

          ['target_arch=="x64"', {

            'xcode_settings': {'ARCHS': ['x86_64']},

          }],

        ],

        'target_conditions': [

          ['_type!="static_library"', {

            'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},

          }],

        ],

      }],

     ['OS=="solaris"', {

       'cflags': [ '-fno-omit-frame-pointer' ],

       # pull in V8's postmortem metadata

       'ldflags': [ '-Wl,-z,allextract' ]

     }],

    ],

  },

}