[all-commits] [llvm/llvm-project] f57dd4: [CMake] Do not append -lm to CMAKE_REQUIRED_LIBRAR...

[Louis Dionne via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: f57dd41562340b0d5d9931b3f1becca761a54d26
      https://github.com/llvm/llvm-project/commit/f57dd41562340b0d5d9931b3f1becca761a54d26
  Author: Louis Dionne <ldionne at apple.com>
  Date:   2020-06-05 (Fri, 05 Jun 2020)

  Changed paths:
    M llvm/cmake/config-ix.cmake

  Log Message:
  -----------
  [CMake] Do not append -lm to CMAKE_REQUIRED_LIBRARIES on Apple

On Apple platforms, linking against libSystem.dylib is sufficient, and
some Apple platforms don't provide libm.dylib. On those platforms, adding
-lm to CMAKE_REQUIRED_LIBRARIES causes all subsequent compile-flag checks
to fail due to the missing library.

Differential Revision: https://reviews.llvm.org/D81265