[all-commits] [llvm/llvm-project] 688d71: [libclc] Track dependencies through dependency fil...

[Fraser Cormack via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 688d71ea8817ace88955671c1af7c80fbfba2c7f
      https://github.com/llvm/llvm-project/commit/688d71ea8817ace88955671c1af7c80fbfba2c7f
  Author: Fraser Cormack <fraser at codeplay.com>
  Date:   2024-03-28 (Thu, 28 Mar 2024)

  Changed paths:
    M libclc/cmake/CMakeCLCInformation.cmake

  Log Message:
  -----------
  [libclc] Track dependencies through dependency files (#86965)

This commit fixes the problem of missing build dependencies between
libclc source files and their various includes (namely headers and .inc
files).

We would like to do this with compiler-generated dependency files
because then the dependencies are accurate and there are no false
positives, leading to unnecessary rebuilds. This is how regular C/C++
dependencies are usually tracked by CMake.

Note that this variable is an internal API so is not guaranteed to work,
but then again *all* of CMake's support for new languages (which we use
for CLC/LL languages) is an internal API. On balance this change is
probably worth it due to how minimally invasive it is. It should work
with all supported compilers and CMake generators.



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