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CheckLanguage: Document that CMAKE_CUDA_HOST_COMPILER should not be set alone

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Follow up commit 7968d9d442 (Help: Document CMAKE_CUDA_HOST_COMPILER as
specific to NVIDIA nvcc, 2020-07-14, v3.19.0-rc1~501^2) with an explicit
note in `CheckLanguage`.

Issue: #25093
This commit is contained in:
Brad King
2023-07-28 15:09:26 -04:00
parent cfd92dece3
commit 13d78bbf16
1 changed files with 8 additions and 0 deletions
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8
Modules/CheckLanguage.cmake
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@@ -33,6 +33,14 @@ or :command:`project` commands:
If the check detects that no explicit host compiler is needed,
this variable will be cleared.
If this variable is already set, its value is preserved only if
:variable:`CMAKE_CUDA_COMPILER <CMAKE_<LANG>_COMPILER>` is also set.
Otherwise, the check runs and overwrites
:variable:`CMAKE_CUDA_HOST_COMPILER` with a new result.
Note that :variable:`CMAKE_CUDA_HOST_COMPILER` documents it should
not be set without also setting
:variable:`CMAKE_CUDA_COMPILER <CMAKE_<LANG>_COMPILER>` to a NVCC compiler.
For example:
.. code-block:: cmake