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https://github.com/openai/codex.git
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Sean Huang
0818b91867
## 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
46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
"""Owned V8 source selection and test metadata derived from the engine policy."""
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load("@rules_cc//cc/common:cc_info.bzl", "CcInfo")
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load("@v8//:bazel/defs.bzl", "FlagInfo", "build_config_content")
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def _options_impl(ctx):
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return FlagInfo(value = ctx.build_setting_value)
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# Source-only features keep upstream select names without adding CLI options.
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# ABI/runtime selections are internal settings controlled by artifact profiles.
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v8_fixed_source_features = rule(
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implementation = _options_impl,
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build_setting = config.bool(flag = False),
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)
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def _v8_build_config_impl(ctx):
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config = json.decode(build_config_content(json.encode(ctx.attr.arch), "true" if ctx.attr.icu else "false"))
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defines = ctx.attr.config[CcInfo].compilation_context.defines.to_list()
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config.update({
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"cppgc_microtask_queue": "V8_CPPGC_MICROTASK_QUEUE" in defines,
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"wasm_random_fuzzers": "V8_WASM_RANDOM_FUZZERS" in defines,
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})
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ctx.actions.write(ctx.outputs.out, json.encode(config) + "\n")
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return [DefaultInfo(files = depset([ctx.outputs.out]))]
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_v8_build_config = rule(
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implementation = _v8_build_config_impl,
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attrs = {
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"arch": attr.string(mandatory = True),
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"config": attr.label(mandatory = True, providers = [CcInfo]),
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"icu": attr.bool(mandatory = True),
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"out": attr.output(mandatory = True),
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},
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)
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def v8_build_config(name, arch):
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"""Keep upstream test metadata aligned with the owned platform features."""
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for mode in ["icu", "noicu"]:
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_v8_build_config(
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name = mode + "/" + name,
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arch = arch,
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config = ":define_flags",
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icu = mode == "icu",
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out = mode + "/" + name + ".json",
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)
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