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24 lines
986 B
Diff
24 lines
986 B
Diff
--- a/rust/private/rustc.bzl
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+++ b/rust/private/rustc.bzl
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@@ -472,7 +472,19 @@
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)
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ld_is_direct_driver = False
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- if not ld or toolchain.linker_preference == "rust":
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+ # The bootstrap process wrapper is built without the normal rules_rust
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+ # process wrapper. On Windows nightly toolchains that expose rust-lld, the
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+ # C++ toolchain path currently resolves to clang++ while still emitting
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+ # MSVC-style arguments, so prefer rust-lld for this one bootstrap binary
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+ # instead of switching all Rust actions over.
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+ use_bootstrap_rust_linker = (
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+ toolchain.target_os.startswith("windows") and
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+ toolchain.linker != None and
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+ hasattr(ctx.executable, "_bootstrap_process_wrapper") and
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+ not ctx.executable._process_wrapper
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+ )
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+
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+ if not ld or toolchain.linker_preference == "rust" or use_bootstrap_rust_linker:
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ld = toolchain.linker.path
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ld_is_direct_driver = toolchain.linker_type == "direct"
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