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# CMAKE_HOST_SYSTEM

Composit Name of OS CMake is being run on.

This variable is the composite of `CMAKE_HOST_SYSTEM_NAME` and `CMAKE_HOST_SYSTEM_VERSION`, e.g. `${CMAKE_HOST_SYSTEM_NAME}-${CMAKE_HOST_SYSTEM_VERSION}`. If `CMAKE_HOST_SYSTEM_VERSION` is not set, then this variable is the same as `CMAKE_HOST_SYSTEM_NAME`.

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