- cuda version is only recognized if it contains no other characters
than "0123456789."
- cuda path is only tested with dummy value . Otherwise a cuda toolkit
must be copied to the integration test machine
The NVIDIA CUDA Toolkit provides MSBuild toolset files for integration
with Visual Studio. Multiple versions may be installed so we need a way
to tell our VS generators which CUDA toolset to use. Extend the
`CMAKE_GENERATOR_TOOLSET` specification to provide a `cuda=...` field
specifying the version number.