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codex/third_party
Sean Huang 0818b91867 Add native Windows MSVC V8 source archive builds (#57269)
## Why

The Bazel V8 source build supported Windows GNU but lacked an MSVC-targeting toolchain to produce `*-pc-windows-msvc` archives.

## What changed

- Add opt-in archive targets for native Windows x64 and ARM64 hosts, selected by `//third_party/v8:rusty_v8_native_windows_archive_for_target`.
- Fetch pinned LLVM and scope its `clang-cl` toolchain to V8 artifacts, using the installed Microsoft SDK. Bundle Chromium libc++ and compiler-rt builtins into the resulting `.lib`.
- Adapt V8 dependencies, assembly, snapshot generation, and platform feature settings for MSVC, and derive test metadata from the selected engine features.
- Document the native build workflow. Existing MSVC consumers continue using prebuilt artifacts; generated Rust bindings and publishing integration remain separate.

GitOrigin-RevId: abd5049245aece90a116fc3bfeac2b158a76f6af
2026-10-26 21:30:41 +00:00
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2025-12-09 17:23:51 +00:00