{

'variables': {

'configuring_node%': 0,

'asan%': 0,

'werror': '', # Turn off -Werror in V8 build.

'visibility%': 'hidden', # V8's visibility setting

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

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

'want_separate_host_toolset%': 0, # V8 should not build target and host

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

'component%': 'static_library', # NB. these names match with what V8 expects

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

'enable_pgo_generate%': '0',

'enable_pgo_use%': '0',

'python%': 'python',

'node_shared%': 'false',

'force_dynamic_crt%': 0,

'node_use_v8_platform%': 'true',

'node_use_bundled_v8%': 'true',

'node_module_version%': '',

'node_with_ltcg%': '',

'node_shared_openssl%': 'false',

'node_tag%': '',

'uv_library%': 'static_library',

'clang%': 0,

'openssl_fips%': '',

# Don't use ICU data file (icudtl.dat) from V8, we use our own.

'icu_use_data_file_flag%': 0,

# Reset this number to 0 on major V8 upgrades.

# Increment by one for each non-official patch applied to deps/v8.

'v8_embedder_string': '-node.39',

##### V8 defaults for Node.js #####

# Old time default, now explicitly stated.

'v8_use_snapshot': 1,

# Turn on SipHash for hash seed generation, addresses HashWick

'v8_use_siphash': 'true',

# These are more relevant for V8 internal development.

# Refs: https://github.com/nodejs/node/issues/23122

# Refs: https://github.com/nodejs/node/issues/23167

# Enable compiler warnings when using V8_DEPRECATED apis from V8 code.

'v8_deprecation_warnings': 0,

# Enable compiler warnings when using V8_DEPRECATE_SOON apis from V8 code.

'v8_imminent_deprecation_warnings': 0,

# Enable disassembler for `--print-code` v8 options

'v8_enable_disassembler': 1,

# https://github.com/nodejs/node/pull/22920/files#r222779926

'v8_enable_handle_zapping': 0,

# Disable pointer compression. Can be enabled at build time via configure

# options but default values are required here as this file is also used by

# node-gyp to build addons.

'v8_enable_pointer_compression%': 0,

'v8_enable_31bit_smis_on_64bit_arch%': 0,

# Disable V8 untrusted code mitigations.

# See https://github.com/v8/v8/wiki/Untrusted-code-mitigations

'v8_untrusted_code_mitigations': 0,

# This is more of a V8 dev setting

# https://github.com/nodejs/node/pull/22920/files#r222779926

'v8_enable_fast_mksnapshot': 0,

'v8_win64_unwinding_info': 1,

# TODO(refack): make v8-perfetto happen

'v8_use_perfetto': 0,

##### end V8 defaults #####

'conditions': [

['target_arch=="arm64"', {

# Disabled pending https://github.com/nodejs/node/issues/23913.

'openssl_no_asm%': 1,

}, {

'openssl_no_asm%': 0,

}],

['OS == "win"', {

'os_posix': 0,

'v8_postmortem_support%': 0,

}, {

'os_posix': 1,

'v8_postmortem_support%': 1,

}],

['v8_use_snapshot==1', {

'conditions': [

['GENERATOR == "ninja"', {

'obj_dir': '<(PRODUCT_DIR)/obj',

'v8_base': '<(PRODUCT_DIR)/obj/tools/v8_gypfiles/libv8_snapshot.a',

}, {

'obj_dir%': '<(PRODUCT_DIR)/obj.target',

'v8_base': '<(PRODUCT_DIR)/obj.target/tools/v8_gypfiles/libv8_snapshot.a',

}],

['OS == "win"', {

'obj_dir': '<(PRODUCT_DIR)/obj',

'v8_base': '<(PRODUCT_DIR)/lib/libv8_snapshot.a',

}],

['OS == "mac"', {

'obj_dir%': '<(PRODUCT_DIR)/obj.target',

'v8_base': '<(PRODUCT_DIR)/libv8_snapshot.a',

}],

],

}, {

'conditions': [

['GENERATOR == "ninja"', {

'obj_dir': '<(PRODUCT_DIR)/obj',

'v8_base': '<(PRODUCT_DIR)/obj/tools/v8_gypfiles/libv8_nosnapshot.a',

}, {

'obj_dir%': '<(PRODUCT_DIR)/obj.target',

'v8_base': '<(PRODUCT_DIR)/obj.target/tools/v8_gypfiles/libv8_nosnapshot.a',

}],

['OS == "win"', {

'obj_dir': '<(PRODUCT_DIR)/obj',

'v8_base': '<(PRODUCT_DIR)/lib/libv8_nosnapshot.a',

}],

['OS == "mac"', {

'obj_dir%': '<(PRODUCT_DIR)/obj.target',

'v8_base': '<(PRODUCT_DIR)/libv8_nosnapshot.a',

}],

],

}],

['openssl_fips != ""', {

'openssl_product': '<(STATIC_LIB_PREFIX)crypto<(STATIC_LIB_SUFFIX)',

}, {

'openssl_product': '<(STATIC_LIB_PREFIX)openssl<(STATIC_LIB_SUFFIX)',

}],

['OS=="mac"', {

'clang%': 1,

}],

['target_arch in "ppc64 s390x"', {

'v8_enable_backtrace': 1,

}],

],

},

'target_defaults': {

'default_configuration': 'Release',

'configurations': {

'Debug': {

'variables': {

'v8_enable_handle_zapping': 1,

'conditions': [

['node_shared != "true"', {

'MSVC_runtimeType': 1, # MultiThreadedDebug (/MTd)

}, {

'MSVC_runtimeType': 3, # MultiThreadedDebugDLL (/MDd)

}],

],

},

'defines': [ 'DEBUG', '_DEBUG', 'V8_ENABLE_CHECKS' ],

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

'conditions': [

['OS=="aix"', {

'cflags': [ '-gxcoff' ],

'ldflags': [ '-Wl,-bbigtoc' ],

}],

['OS == "android"', {

'cflags': [ '-fPIC' ],

'ldflags': [ '-fPIC' ]

}],

],

'msvs_settings': {

'VCCLCompilerTool': {

'BasicRuntimeChecks': 3, # /RTC1

'MinimalRebuild': 'false',

'OmitFramePointers': 'false',

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

'RuntimeLibrary': '<(MSVC_runtimeType)',

},

'VCLinkerTool': {

'LinkIncremental': 2, # enable incremental linking

},

},

'xcode_settings': {

'GCC_OPTIMIZATION_LEVEL': '0', # stop gyp from defaulting to -Os

},

},

'Release': {

'variables': {

'v8_enable_handle_zapping': 0,

'pgo_generate': ' -fprofile-generate ',

'pgo_use': ' -fprofile-use -fprofile-correction ',

'lto': ' -flto=4 -fuse-linker-plugin -ffat-lto-objects ',

'conditions': [

['node_shared != "true"', {

'MSVC_runtimeType': 0 # MultiThreaded (/MT)

}, {

'MSVC_runtimeType': 2 # MultiThreadedDLL (/MD)

}],

],

},

'cflags': [ '-O3' ],

'conditions': [

['OS=="solaris"', {

# pull in V8's postmortem metadata

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

}],

['OS!="mac" and OS!="win"', {

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

}],

['OS=="linux"', {

'conditions': [

['enable_pgo_generate=="true"', {

'cflags': ['<(pgo_generate)'],

'ldflags': ['<(pgo_generate)'],

},],

['enable_pgo_use=="true"', {

'cflags': ['<(pgo_use)'],

'ldflags': ['<(pgo_use)'],

},],

['enable_lto=="true"', {

'cflags': ['<(lto)'],

'ldflags': ['<(lto)'],

},],

],

},],

['OS == "android"', {

'cflags': [ '-fPIC' ],

'ldflags': [ '-fPIC' ]

}],

],

'msvs_settings': {

'VCCLCompilerTool': {

'EnableFunctionLevelLinking': 'true',

'EnableIntrinsicFunctions': 'true',

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

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

'OmitFramePointers': 'true',

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

'RuntimeLibrary': '<(MSVC_runtimeType)',

'RuntimeTypeInfo': 'false',

}

},

'xcode_settings': {

'GCC_OPTIMIZATION_LEVEL': '3', # stop gyp from defaulting to -Os

},

}

},

# Defines these mostly for node-gyp to pickup, and warn addon authors of

# imminent V8 deprecations, also to sync how dependencies are configured.

'defines': [

'V8_DEPRECATION_WARNINGS',

'V8_IMMINENT_DEPRECATION_WARNINGS',

],

# Forcibly disable -Werror. We support a wide range of compilers, it's

# simply not feasible to squelch all warnings, never mind that the

# libraries in deps/ are not under our control.

'cflags!': ['-Werror'],

'msvs_settings': {

'VCCLCompilerTool': {

'BufferSecurityCheck': 'true',

'DebugInformationFormat': 1, # /Z7 embed info in .obj files

'ExceptionHandling': 0, # /EHsc

'MultiProcessorCompilation': 'true',

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

'SuppressStartupBanner': 'true',

'WarnAsError': 'false',

'WarningLevel': 3, # /W3

},

'VCLinkerTool': {

'target_conditions': [

['_type=="executable"', {

'SubSystem': 1, # /SUBSYSTEM:CONSOLE

}],

],

'conditions': [

['target_arch=="ia32"', {

'TargetMachine' : 1, # /MACHINE:X86

}],

['target_arch=="x64"', {

'TargetMachine' : 17, # /MACHINE:X64

}],

['target_arch=="arm64"', {

'TargetMachine' : 0, # NotSet. MACHINE:ARM64 is inferred from the input files.

}],

],

'GenerateDebugInformation': 'true',

'SuppressStartupBanner': 'true',

},

},

# Disable warnings:

# - "C4251: class needs to have dll-interface"

# - "C4275: non-DLL-interface used as base for DLL-interface"

# Over 10k of these warnings are generated when compiling node,

# originating from v8.h. Most of them are false positives.

# See also: https://github.com/nodejs/node/pull/15570

# TODO: re-enable when Visual Studio fixes these upstream.

#

# - "C4267: conversion from 'size_t' to 'int'"

# Many any originate from our dependencies, and their sheer number

# drowns out other, more legitimate warnings.

# - "C4244: conversion from 'type1' to 'type2', possible loss of data"

# Ususaly safe. Disable for `dep`, enable for `src`

'msvs_disabled_warnings': [4351, 4355, 4800, 4251, 4275, 4244, 4267],

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

'conditions': [

[ 'configuring_node', {

'msvs_configuration_attributes': {

'OutputDirectory': '<(DEPTH)/out/$(Configuration)/',

'IntermediateDirectory': '$(OutDir)obj/$(ProjectName)/'

},

}],

[ 'target_arch=="x64"', {

'msvs_configuration_platform': 'x64',

}],

[ 'target_arch=="arm64"', {

'msvs_configuration_platform': 'arm64',

}],

['asan == 1 and OS != "mac"', {

'cflags+': [

'-fno-omit-frame-pointer',

'-fsanitize=address',

'-fsanitize-address-use-after-scope',

],

'defines': [ 'LEAK_SANITIZER', 'V8_USE_ADDRESS_SANITIZER' ],

'cflags!': [ '-fomit-frame-pointer' ],

'ldflags': [ '-fsanitize=address' ],

}],

['asan == 1 and OS == "mac"', {

'xcode_settings': {

'OTHER_CFLAGS+': [

'-fno-omit-frame-pointer',

'-gline-tables-only',

'-fsanitize=address',

'-DLEAK_SANITIZER'

],

'OTHER_CFLAGS!': [

'-fomit-frame-pointer',

],

},

'target_conditions': [

['_type!="static_library"', {

'xcode_settings': {'OTHER_LDFLAGS': ['-fsanitize=address']},

}],

],

}],

['OS == "win"', {

'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',

# Make sure the STL doesn't try to use exceptions

'_HAS_EXCEPTIONS=0',

'BUILDING_V8_SHARED=1',

'BUILDING_UV_SHARED=1',

],

}],

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

'cflags': [ '-pthread' ],

'ldflags': [ '-pthread' ],

}],

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

'cflags': [ '-Wall', '-Wextra', '-Wno-unused-parameter', ],

'cflags_cc': [ '-fno-rtti', '-fno-exceptions', '-std=gnu++1y' ],

'defines': [ '__STDC_FORMAT_MACROS' ],

'ldflags': [ '-rdynamic' ],

'target_conditions': [

# The 1990s toolchain on SmartOS can't handle thin archives.

['_type=="static_library" and OS=="solaris"', {

'standalone_static_library': 1,

}],

['OS=="openbsd"', {

'cflags': [ '-I/usr/local/include' ],

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

}],

],

'conditions': [

[ 'target_arch=="ia32"', {

'cflags': [ '-m32' ],

'ldflags': [ '-m32' ],

}],

[ 'target_arch=="x32"', {

'cflags': [ '-mx32' ],

'ldflags': [ '-mx32' ],

}],

[ 'target_arch=="x64"', {

'cflags': [ '-m64' ],

'ldflags': [ '-m64' ],

}],

[ 'target_arch=="ppc" and OS!="aix"', {

'cflags': [ '-m32' ],

'ldflags': [ '-m32' ],

}],

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

'cflags': [ '-m64', '-mminimal-toc' ],

'ldflags': [ '-m64' ],

}],

[ 'target_arch=="s390x"', {

'cflags': [ '-m64', '-march=z196' ],

'ldflags': [ '-m64', '-march=z196' ],

}],

[ 'OS=="solaris"', {

'cflags': [ '-pthreads' ],

'ldflags': [ '-pthreads' ],

'cflags!': [ '-pthread' ],

'ldflags!': [ '-pthread' ],

}],

[ 'node_shared=="true"', {

'cflags': [ '-fPIC' ],

}],

],

}],

[ 'OS=="aix"', {

'variables': {

# Used to differentiate `AIX` and `OS400`(IBM i).

'aix_variant_name': '<!(uname -s)',

},

'cflags': [ '-maix64', ],

'ldflags!': [ '-rdynamic', ],

'ldflags': [

'-Wl,-bbigtoc',

'-maix64',

],

'conditions': [

[ '"<(aix_variant_name)"=="OS400"', { # a.k.a. `IBM i`

'ldflags': [

'-Wl,-blibpath:/QOpenSys/pkgs/lib:/QOpenSys/usr/lib',

'-Wl,-brtl',

],

}, { # else it's `AIX`

# Disable the following compiler warning:

#

# warning: visibility attribute not supported in this

# configuration; ignored [-Wattributes]

#

# This is gcc complaining about __attribute((visibility("default"))

# in static library builds. Legitimate but harmless and it drowns

# out more relevant warnings.

'cflags': [ '-Wno-attributes' ],

'ldflags': [

'-Wl,-blibpath:/usr/lib:/lib:/opt/freeware/lib/pthread/ppc64',

],

}],

],

}],

['OS=="android"', {

'target_conditions': [

['_toolset=="target"', {

'defines': [ '_GLIBCXX_USE_C99_MATH' ],

'libraries': [ '-llog' ],

}],

['_toolset=="host"', {

'cflags': [ '-pthread' ],

'ldflags': [ '-pthread' ],

}],

],

}],

['OS=="mac"', {

'defines': ['_DARWIN_USE_64_BIT_INODE=1'],

'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

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

'MACOSX_DEPLOYMENT_TARGET': '10.10', # -mmacosx-version-min=10.10

'USE_HEADERMAP': 'NO',

'OTHER_CFLAGS': [

'-fno-strict-aliasing',

],

'WARNING_CFLAGS': [

'-Wall',

'-Wendif-labels',

'-W',

'-Wno-unused-parameter',

],

},

'target_conditions': [

['_type!="static_library"', {

'xcode_settings': {

'OTHER_LDFLAGS': [

'-Wl,-no_pie',

'-Wl,-search_paths_first',

],

},

}],

],

'conditions': [

['target_arch=="ia32"', {

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

}],

['target_arch=="x64"', {

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

}],

['clang==1', {

'xcode_settings': {

'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',

'CLANG_CXX_LANGUAGE_STANDARD': 'gnu++1y', # -std=gnu++1y

'CLANG_CXX_LIBRARY': 'libc++',

},

}],

],

}],

['OS=="freebsd" and node_use_dtrace=="true"', {

'libraries': [ '-lelf' ],

}],

['OS=="freebsd"', {

'ldflags': [

'-Wl,--export-dynamic',

],

}],

# if node is built as an executable,

# the openssl mechanism for keeping itself "dload"-ed to ensure proper

# atexit cleanup does not apply

['node_shared_openssl!="true" and node_shared!="true"', {

'defines': [

# `OPENSSL_NO_PINSHARED` prevents openssl from dload

# current node executable,

# see https://github.com/nodejs/node/pull/21848

# or https://github.com/nodejs/node/issues/27925

'OPENSSL_NO_PINSHARED'

],

}],

['node_shared_openssl!="true"', {

# `OPENSSL_THREADS` is defined via GYP for openSSL for all architectures.

'defines': [

'OPENSSL_THREADS',

],

}],

['node_shared_openssl!="true" and openssl_no_asm==1', {

'defines': [

'OPENSSL_NO_ASM',

],

}],

],

}

}