[llvm-dev] cuda .cu compile error

[Justin Lebar via llvm-dev]

I am not terribly surprised that it doesn't work on cygwin...

If you want help patching clang it shouldn't be too hard to get it to parse
the contents of the cuda install, which is where it's currently failing.
No idea if it will work after you fix that, though.

On Thu, Apr 11, 2019, 9:47 PM Nancy via llvm-dev <llvm-dev at lists.llvm.org>
wrote:

> Dear list,
>
> In cygwin, I encounter a problem below, any ideas?
> $clang++ -O0 -g --cuda-gpu-arch=sm_35 -o vectorAddSimple2
> vectorAddSimple2.cu --cuda-path='/cygdrive/c/Program Files/NVIDIA GPU
> Computing Toolkit/CUDA/v10.1/' -L'/cygdrive/c/Program Files/NVIDIA GPU
> Computing Toolkit/CUDA/v10.1/lib/x64/' -lcudart -save-temps -v
> clang version 8.0.1
> Target: i686-pc-windows-msvc
> Thread model: posix
> InstalledDir: C:\cygwin64\home\nancy\rpp_llvm\build_latest\Debug\bin
> clang++: error: cannot find libdevice for sm_35. Provide path to different
> CUDA installation via --cuda-path, or pass -nocudalib to build without
> linking with libdevice.
> clang++: error: cannot find CUDA installation.  Provide its path via
> --cuda-path, or pass -nocudainc to build without CUDA includes.
> clang++: error: cannot find libdevice for sm_35. Provide path to different
> CUDA installation via --cuda-path, or pass -nocudalib to build without
> linking with libdevice.
> clang++: error: cannot find libdevice for sm_35. Provide path to different
> CUDA installation via --cuda-path, or pass -nocudalib to build without
> linking with libdevice.
> clang++: error: cannot find CUDA installation.  Provide its path via
> --cuda-path, or pass -nocudainc to build without CUDA includes.
>
> It works fine in linux.
> $clang++ -O0 -g --cuda-gpu-arch=sm_35 --cuda-path=/usr/local/cuda -o
> vectorAddSimple2 vectorAddSimple2.cu -L/usr/local/cuda/lib64 -lcudart
> -save-temps -v
>
> --
> Best Regards,
> Nancy
>
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