[all-commits] [llvm/llvm-project] 543932: [libc] Make LIBC_MATH_NO_ERRNO imply `-fno-math-er...

[Petr Hosek via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 543932f034a15a8a1f6fda545432f87d26949667
      https://github.com/llvm/llvm-project/commit/543932f034a15a8a1f6fda545432f87d26949667
  Author: Petr Hosek <phosek at google.com>
  Date:   2025-10-16 (Thu, 16 Oct 2025)

  Changed paths:
    M libc/cmake/modules/LLVMLibCCompileOptionRules.cmake
    M libc/cmake/modules/LLVMLibCTestRules.cmake
    M libc/config/baremetal/config.json

  Log Message:
  -----------
  [libc] Make LIBC_MATH_NO_ERRNO imply `-fno-math-errno` (#125794)

This partially reverts #124200. Rather than using a CMake option to
control whether to enable `-fno-math-errno`, use LIBC_MATH_NO_ERRNO
configuration option. While there might be other cases when we want to
set `-fno-math-errno`, having LIBC_MATH_NO_ERRNO imply it should be
always safe and represents a reasonable starting point.



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