[all-commits] [llvm/llvm-project] 876a5c: [libc++] Avoid including <features.h> on arbitrary...

[Louis Dionne via All-commits]

  Branch: refs/heads/release/20.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 876a5c9e5905a9666748632afba1ff83200ed95b
      https://github.com/llvm/llvm-project/commit/876a5c9e5905a9666748632afba1ff83200ed95b
  Author: Louis Dionne <ldionne.2 at gmail.com>
  Date:   2025-02-19 (Wed, 19 Feb 2025)

  Changed paths:
    M libcxx/include/__configuration/platform.h

  Log Message:
  -----------
  [libc++] Avoid including <features.h> on arbitrary platforms (#125587)

This partially reverts commit 5f2389d4. That commit started checking
whether <features.h> was a valid include unconditionally, however codebases
are free to have such a header on their search path, which breaks compilation.
LLVM libc now provides a more standard way of getting configuration macros
like __LLVM_LIBC__.

After this patch, we only include <features.h> when we're on Linux or
when we're compiling for GPUs.

(cherry picked from commit cffc1ac3491c891ef4f80bcbfa685710e477eeac)



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