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This PR adds awareness of CUDA, based on the work of @bowie7070, in #104.
In #104, @bowie7070 was setting the
CMAKE_CUDA_HOST_COMPILERto the resolved path of the MSVC compiler. Based on the discussion there, it makes sense to setCMAKE_CUDA_HOST_COMPILER, but I'd like to be a little more defensive. With this change, if theCMAKE_CUDA_COMPILERvalue is set - so demonstrating that the caller wants Cuda support - and theCMAKE_CUDA_HOST_COMPILERisn't set, and theCUDAHOSTCXXenvironment variable isn't set (both ways that a caller could specify the compiler), then the toolchain will setCMAKE_CUDA_HOST_COMPILERto the value ofCMAKE_CXX_COMPILER.Since Cuda only supports MSVC on Windows - as per the documentation here - this PR only adds support to the
Windows.MSVC.toolchain.cmaketoolchain.The PR also adds a Cuda example, that simply calls into the Cuda runtime, and builds it in the CI build, when the CMake preset is
windows-msvc-x64.