Build V8 - Note

Build V8 - Note.md

Build V8 Note

Step by step:

• Checkout by depot-tools [https://v8.dev/docs/source-code]

git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git ~/.v8/depot_tools
export PATH=~/.v8//depot_tools:$PATH
gclient
cd path/to/v8/folder
fetch v8

• Generate Ninja Folder (with '...' is v8 input)

cd path/to/v8/folder/v8
gn gen out/foo --args='...'

• Build

ninja -C out/foo v8_monolith

• Out here: out/foo/obj/libv8_monolith.a

V8 Input

• Print all

gn args out/foo --list

• Example for ios build

enable_ios_bitcode=true ios_deployment_target=10 is_component_build=false is_debug=false target_os="ios" use_custom_libcxx=false use_xcode_clang=true v8_enable_i18n_support=false v8_monolithic=true v8_use_external_startup_data=false is_clang=true cppgc_enable_caged_heap=false is_official_build=true fatal_linker_warnings=false treat_warnings_as_errors=false

Turn off iOS Signing

Find ios_sdk.gni in v8/build/config/ios and set ios_enable_code_signing to false