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Arm Performance Libraries compatibility with MSVC

CristianPanaite

Hello!

I was trying to build PyTorch with APL using MSVC on a Windows machine and I encountered this error: 

error LNK2001: unresolved external symbol __divdc3

It seems like __divdc3 is a symbol specific to LLVM and it doesn't exist on MSCV.

Can you tell me if there is a way to make APL compatible with MSVC?

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  • 0 in reply to adamsmithad

    I can't tell about performance on Windows but compatibility is tricky. I need a Fortran compiler. I build Classic Flang - its runtime files depend on MSVC's libomp140.aarch64.dll while the Flang OpenMP library is called libomp.dll. ArmPL's OpenMP library is called omp.dll. Which one to use? :)

    I guess I can recompile Flang a seconds time with itself to get rid of the libomp140.aarch64.dll dependency and then use ArmPL's libomp.dll which has the same name as Flang's. I haven't tested it yet. For me the problem is to get Flang working on Windows as it does on Linux. When I link a large number of Fortran object files, I get a lot of missing symbols. But this is a different discussion.

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  • 0 in reply to adamsmithad

    I can't tell about performance on Windows but compatibility is tricky. I need a Fortran compiler. I build Classic Flang - its runtime files depend on MSVC's libomp140.aarch64.dll while the Flang OpenMP library is called libomp.dll. ArmPL's OpenMP library is called omp.dll. Which one to use? :)

    I guess I can recompile Flang a seconds time with itself to get rid of the libomp140.aarch64.dll dependency and then use ArmPL's libomp.dll which has the same name as Flang's. I haven't tested it yet. For me the problem is to get Flang working on Windows as it does on Linux. When I link a large number of Fortran object files, I get a lot of missing symbols. But this is a different discussion.

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