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Fix diagnostic message for CUDA version mismatch in cuda.cmake (#157370)

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This PR fixes  #157354

It fixes the issue in 'cmake/public/cuda.cmake' where a diagnostic message incorrectly showed an empty CUDA version when 'FindCUDA' and header-reported versions differed.

The problem was caused by this line:

set(${cuda_version_from_findcuda} ${CUDA_VERSION_STRING})

This incorrectly used the value of cuda_version_from_findcuda as a variable name. As a result the version string wasn't assigned and the error message omitted the version. This has been corrected to:

set(cuda_version_from_findcuda ${CUDA_VERSION_STRING})

Now the diagnostic message properly displays the CUDA version reported by FindCUDA.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/157370
Approved by: https://github.com/soulitzer
This commit is contained in:
dsashidh
2025-07-11 20:58:32 +00:00
committed by PyTorch MergeBot
parent 00ae620b9f
commit 4ff9b7fa31
1 changed files with 1 additions and 1 deletions
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cmake/public/cuda.cmake
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@ -110,7 +110,7 @@ if(CUDA_FOUND)
# Force CUDA to be processed for again next time
# TODO: I'm not sure if this counts as an implementation detail of
# FindCUDA
set(${cuda_version_from_findcuda} ${CUDA_VERSION_STRING})
set(cuda_version_from_findcuda ${CUDA_VERSION_STRING})
unset(CUDA_TOOLKIT_ROOT_DIR_INTERNAL CACHE)
# Not strictly necessary, but for good luck.
unset(CUDA_VERSION CACHE)