[llvm-branch-commits] [clang] [flang] [lld] [llvm] [Flang] LLVM_ENABLE_RUNTIMES=flang-rt (PR #110217)

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@@ -15,6 +15,7 @@
 # used for building this FortranFloat128Math library.
 
 include(CheckLibraryExists)
+include(CheckIncludeFile)
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jeanPerier wrote:

When using `-DFLANG_RUNTIME_F128_MATH_LIB=libquadmath`, I am seeing a failure in my latest test where cmake `check_include_file` for quadmath.h fails below while the system has it and a similar cmake command works with the current llvm main.

I will invetsigate more, I suspect that some system header paths are set-up in the llvm/flang build that are not set-up anymore here.

I am surprised I did not see that earlier my earlier testing (maybe that is because I mostly tested out-of-tree and that worked there, I need to check that).

https://github.com/llvm/llvm-project/pull/110217