[Openmp-dev] Math symbols are not found during configuration

[Jeff Hammond via Openmp-dev]

How does #define not act on the full source code? How is that a compliant implementation of the preprocessor?

Jeff

> On Jul 24, 2019, at 12:25 PM, Doerfert, Johannes via Openmp-dev <openmp-dev at lists.llvm.org> wrote:
> 
> Hi Itaru,
> 
> For now, you need to define them yourself when you need them in the target region.
> We are working on a permanent solution.
> 
> Thanks,
>  Johannes
> 
> ________________________________________
> From: Openmp-dev <openmp-dev-bounces at lists.llvm.org> on behalf of Itaru Kitayama via Openmp-dev <openmp-dev at lists.llvm.org>
> Sent: Tuesday, July 23, 2019 22:58
> To: openmp-dev at lists.llvm.org
> Subject: [Openmp-dev] Math symbols are not found during configuration
> 
> Hi,
> Adding the flag -fopenmp-targets=nvptx64 makes math symbols M_E and M_PI defined in cmath not detected during the execution of CMake. How do I work around this? I am using the latest trunk Clang at this moment, and without the above flag, both symbols are detected properly.
> 
> Thanks,
> Itaru.
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