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@ZuseZ4 ZuseZ4 commented Dec 17, 2025

r? @Kobzol

Since it looks like we'll postpone enabling offload in CI for a bit, I factored out these improvements which we want independently. I locally tested both build options successfully, the in-tree-clang build, as well as the build where we provide a path to an external clang.

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rustbot commented Dec 17, 2025

This PR modifies src/bootstrap/src/core/config.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

This PR changes how LLVM is built. Consider updating src/bootstrap/download-ci-llvm-stamp.

This PR modifies bootstrap.example.toml.

If appropriate, please update CONFIG_CHANGE_HISTORY in src/bootstrap/src/utils/change_tracker.rs.

@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) labels Dec 17, 2025
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rustbot commented Dec 17, 2025

Kobzol is not on the review rotation at the moment.
They may take a while to respond.

@ZuseZ4 ZuseZ4 force-pushed the offload-build-rework branch from 93bc6ea to 4b2d2b9 Compare December 17, 2025 18:32
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rustbot commented Dec 17, 2025

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

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@ZuseZ4 ZuseZ4 force-pushed the offload-build-rework branch from 4b2d2b9 to dbe2964 Compare December 17, 2025 21:08
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