# CUDAHOSTCXX

Added in version 3.8.

This is a CMake Environment Variable. Its initial value is taken from the calling process environment.

Preferred executable for compiling host code when compiling `CUDA` language files. Will only be used by CMake on the first configuration to determine `CUDA` host compiler, after which the value for `CUDAHOSTCXX` is stored in the cache as `CMAKE_CUDA_HOST_COMPILER`. This environment variable is preferred over `CMAKE_CUDA_HOST_COMPILER`.

This environment variable is primarily meant for use with projects that enable `CUDA` as a first-class language.

Note

Ignored when using Visual Studio Generators.

Added in version 3.13: The `FindCUDA` module will use this variable to initialize its `CUDA_HOST_COMPILER` setting.