[flang-commits] [clang] [flang] [llvm] [mlir] [polly] [CMake][LLVM] Add PCH infrastructure and LLVMSupport PCH (PR #176420)

[David Truby via flang-commits]

DavidTruby wrote:

I get a huge amount of warnings on Windows aarch64 builds since this patch, looking like
```
<built-in>(2,9): warning: definition of macro 'CLANG_BUILD_STATIC' does not match definition in precompiled header [-Wclang-cl-pch]
    2 | #define CLANG_BUILD_STATIC 1
      |         ^
    ```
    and the same for LLVM_BUILD_STATIC and MLIR_BUILD_STATIC. Does anyone know what's causing these?

https://github.com/llvm/llvm-project/pull/176420