[all-commits] [llvm/llvm-project] e3ad70: [CMake] Add missing CheckCSourceCompiles include

[Sam James via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e3ad7081ac0752daa380cd7ec58c7909f43826ad
      https://github.com/llvm/llvm-project/commit/e3ad7081ac0752daa380cd7ec58c7909f43826ad
  Author: Sam James <sam at gentoo.org>
  Date:   2023-06-10 (Sat, 10 Jun 2023)

  Changed paths:
    M llvm/cmake/modules/HandleLLVMOptions.cmake

  Log Message:
  -----------
  [CMake] Add missing CheckCSourceCompiles include

Fails with cmake-3.27_rc1 otherwise:
```

CMake Error at /var/tmp/portage/sys-libs/libcxxabi-17.0.0_pre20230609/work/llvm/cmake/modules/HandleLLVMOptions.cmake:821 (CHECK_C_SOURCE_COMPILES):
  Unknown CMake command "CHECK_C_SOURCE_COMPILES".
Call Stack (most recent call first):
  CMakeLists.txt:156 (include)
```

Needed for CHECK_C_SOURCE_COMPILES.

Bug: https://bugs.gentoo.org/908233

Reviewed By: mgorny

Differential Revision: https://reviews.llvm.org/D152622