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