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ci: test windows cross build (#25000)

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We cross build when using bazel for windows. This causes a couple
hiccups in that v8 does a mksnapshot step that is expecting to snapshot
on the host arch which wasn't matching when we were doing the
crossbuild. This was causing segfault failiures when starting up
codemode from a cross built artifact.

This changes things such that we cross build the library and then run
and link a snapshot on the host machine/arch which is windows. This
gives us a functional snapshot and library that can start code-mode on
windows.

This fixes the build and then fixes two test regressions we had.
This commit is contained in:
Channing Conger
2026-06-04 17:51:13 -07:00
committed by GitHub
parent 72d0bfb6ba
commit 4be1a168fc
4 changed files with 90 additions and 22 deletions
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14
.bazelrc
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@@ -105,9 +105,9 @@ common:ci --disk_cache=
# Shared config for the main Bazel CI workflow.
common:ci-bazel --config=ci
common:ci-bazel --build_metadata=TAG_workflow=bazel
# Bazel CI cross-compiles in several legs, and the V8-backed code-mode tests
# are not stable in that setup yet. Keep running the rest of the Rust
# integration suites through the workspace-root launcher.
# Keep code-mode integration cases out of ordinary Bazel legs. The
# Windows-cross config below re-enables them after generating its Windows V8
# snapshot on the Windows runner.
common:ci-bazel --test_env=CODEX_BAZEL_TEST_SKIP_FILTERS=suite::code_mode::
# Shared config for Bazel-backed Rust linting.
@@ -186,12 +186,16 @@ common:ci-windows-cross --config=ci-windows
common:ci-windows-cross --build_metadata=TAG_windows_cross_compile=true
common:ci-windows-cross --host_platform=//:rbe
common:ci-windows-cross --strategy=TestRunner=local
# V8 embeds IsolateData offsets in snapshot builtins; Windows snapshots must be
# generated by a Windows mksnapshot binary rather than the Linux RBE host tool.
common:ci-windows-cross --strategy=V8Mksnapshot=local
common:ci-windows-cross --local_test_jobs=4
common:ci-windows-cross --test_env=RUST_TEST_THREADS=1
# Native Windows CI still covers the PowerShell tests. The cross-built gnullvm
# binaries currently hang in PowerShell AST parser tests when those binaries are
# run on the Windows runner.
common:ci-windows-cross --test_env=CODEX_BAZEL_TEST_SKIP_FILTERS=suite::code_mode::,powershell
# run on the Windows runner. Keep V8-backed code-mode tests enabled except for
# the hidden dynamic-tool callback test, which currently times out on Windows.
common:ci-windows-cross --test_env=CODEX_BAZEL_TEST_SKIP_FILTERS=powershell,suite::code_mode::code_mode_can_call_hidden_dynamic_tools
common:ci-windows-cross --platforms=//:windows_x86_64_gnullvm
common:ci-windows-cross --extra_execution_platforms=//:rbe,//:windows_x86_64_msvc
common:ci-windows-cross --extra_toolchains=//:windows_gnullvm_tests_on_msvc_host_toolchain