| CMAKE_CUDA_HOST_COMPILER |
| ------------------------ |
| |
| .. versionadded:: 3.10 |
| |
| When :variable:`CMAKE_CUDA_COMPILER <CMAKE_<LANG>_COMPILER>` is set to |
| NVIDIA ``nvcc``, ``CMAKE_CUDA_HOST_COMPILER`` selects the compiler |
| executable to use when compiling host code for ``CUDA`` language files. |
| This maps to the ``nvcc -ccbin`` option. |
| |
| The ``CMAKE_CUDA_HOST_COMPILER`` variable may be set explicitly before CUDA is |
| first enabled by a :command:`project` or :command:`enable_language` command. |
| This can be done via ``-DCMAKE_CUDA_HOST_COMPILER=...`` on the command line |
| or in a :ref:`toolchain file <Cross Compiling Toolchain>`. Or, one may set |
| the :envvar:`CUDAHOSTCXX` environment variable to provide a default value. |
| |
| Once the CUDA language is enabled, the ``CMAKE_CUDA_HOST_COMPILER`` variable |
| is read-only and changes to it are undefined behavior. |
| |
| .. note:: |
| |
| Since ``CMAKE_CUDA_HOST_COMPILER`` is meaningful only when the |
| ``CMAKE_CUDA_COMPILER`` is ``nvcc``, it does not make sense to |
| set ``CMAKE_CUDA_HOST_COMPILER`` explicitly without also setting |
| ``CMAKE_CUDA_COMPILER`` explicitly to be sure it is ``nvcc``. |