[all-commits] [llvm/llvm-project] bc3615: [CMake] Use append for CMAKE_REQUIRED_* variables

[Petr Hosek via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: bc3615f50e585232f34edcf6faf8cbd3e6dece1a
      https://github.com/llvm/llvm-project/commit/bc3615f50e585232f34edcf6faf8cbd3e6dece1a
  Author: Petr Hosek <phosek at google.com>
  Date:   2020-09-21 (Mon, 21 Sep 2020)

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

  Log Message:
  -----------
  [CMake] Use append for CMAKE_REQUIRED_* variables

This ensures that required includes and libraries such as -lm that
were added earlier aren't overwritten.

Differential Revision: https://reviews.llvm.org/D88068