CODEWITHSUNDEEP
c++cudaclang
fbartolic
fbartolic

Reputation: 413

Compiling CUDA with clang - 'No available targets are compatible with triple "nvptx64-nvidia-cuda"'

I am trying to compile the example CUDA code axpy.cu from the llvm docs using:

clang++ axpy.cu -o axpy --cuda-gpu-arch=sm_86 -L/usr/local/cuda-11.2/lib64 -lcudart_static -ldl -lrt -pthread

but I'm getting the following error:

error: unable to create target: 'No available targets are compatible with triple "nvptx64-nvidia-cuda"'

What's going on here? I was able to compile CUDA with clang a day or two ago and now it's not working for some reason. I'm not sure what changed on my system.

I'm using clang 13 which should support CUDA 11.2.

Upvotes: 1

Views: 1631

Answers (1)

fbartolic
fbartolic

Reputation: 413

The problem was that I built llvm/clang from source without support for cuda. The solution is to use the -DLLVM_TARGETS_TO_BUILD="X86;NVPTX" when building llvm from source.

Upvotes: 3

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