# 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