[all-commits] [llvm/llvm-project] 5f3a61: [bazel] Download linux UAPI headers when no local ...

[Jackson Stogel via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5f3a611fa194ca76c91d3889adb68532cef44cee
      https://github.com/llvm/llvm-project/commit/5f3a611fa194ca76c91d3889adb68532cef44cee
  Author: Jackson Stogel <jtstogel at gmail.com>
  Date:   2026-09-25 (Fri, 25 Sep 2026)

  Changed paths:
    M utils/bazel/MODULE.bazel.lock
    M utils/bazel/linux_uapi.bzl

  Log Message:
  -----------
  [bazel] Download linux UAPI headers when no local dir is set (#216868)

This PR defines a hermetic source for `@linux_api//:linux_uapi_headers`
that will be used in CI. If no `LINUX_UAPI_INCLUDE_DIR` value is
specified, then Bazel will download the linux-libc-dev debian package
and use its headers.

I originally wanted to pull from https://github.com/torvalds/linux and
build UAPI headers from source as it gives more control, but the repo is
rather large and took ~20s to download and ~10s to build. Using the
debian package's headers is closer to what the LLVM-libc fullbuild CI
[currently
does](https://github.com/llvm/llvm-project/blob/007551bacb899a409218574908d96b0633d52018/.github/workflows/containers/libc/Dockerfile#L38)
and is very fast.



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