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-rw-r--r--Help/envvar/CUDAHOSTCXX.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Help/envvar/CUDAHOSTCXX.rst b/Help/envvar/CUDAHOSTCXX.rst
index f0f94f6..bb786ca 100644
--- a/Help/envvar/CUDAHOSTCXX.rst
+++ b/Help/envvar/CUDAHOSTCXX.rst
@@ -7,3 +7,7 @@ determine ``CUDA`` host compiler, after which the value for ``CUDAHOSTCXX`` is
stored in the cache as :variable:`CMAKE_CUDA_HOST_COMPILER`. For any
configuration run (including the first), the environment variable will be
ignored if the :variable:`CMAKE_CUDA_HOST_COMPILER` variable is defined.
+
+This environment variable is primarily meant for use with projects that
+enable ``CUDA`` as a first-class language. The :module:`FindCUDA`
+module will also use it to initialize its ``CUDA_HOST_COMPILER`` setting.