[all-commits] [llvm/llvm-project] 644f00: [libc][bazel] Add a repo with linux kernel UAPI he...

[Jackson Stogel via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 644f006fba2b52f0cc0fd58917f2a3ad7d67e6c6
      https://github.com/llvm/llvm-project/commit/644f006fba2b52f0cc0fd58917f2a3ad7d67e6c6
  Author: Jackson Stogel <jtstogel at gmail.com>
  Date:   2026-09-08 (Tue, 08 Sep 2026)

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

  Log Message:
  -----------
  [libc][bazel] Add a repo with linux kernel UAPI headers (#216867)

This PR exposes a target `@linux_uapi//:linux_uapi_headers` that points
to a local directory configured by the `LINUX_UAPI_INCLUDE_DIR`
environment variable. Linux UAPI headers are required to support libc's
`FULL_BUILD` configuration, which uses `-nostdlibinc` and thus requires
a copy of linux kernel headers.


  Commit: b586da6cd57c3e8f4abfc46bc08af52e2f68f25a
      https://github.com/llvm/llvm-project/commit/b586da6cd57c3e8f4abfc46bc08af52e2f68f25a
  Author: Jackson Stogel <jtstogel at gmail.com>
  Date:   2026-09-08 (Tue, 08 Sep 2026)

  Changed paths:
    M utils/bazel/llvm-project-overlay/libc/BUILD.bazel
    M utils/bazel/llvm-project-overlay/libc/libc_build_rules.bzl
    M utils/bazel/llvm-project-overlay/libc/libc_configure_options.bzl

  Log Message:
  -----------
  [libc][bazel] Allow building with -DLIBC_FULL_BUILD (#218992)

This PR defines a flag `-- at llvm-project//libc:build_mode` that
configures LLVM-libc to build with full-build flags. This is only
compatible with clang at the moment, since it relies on the
`-nostdlibinc` flag.

This PR contains the logic for LLVM-libc full build in Bazel. A largely
AI generated follow-on PR has `libc/BUILD.bazel` changes for building
libc targets in full-build mode:
https://github.com/llvm/llvm-project/pull/218993.


Compare: https://github.com/llvm/llvm-project/compare/19a128ca4602...b586da6cd57c

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