| CMAKE_HOST_SYSTEM_NAME | |
| ---------------------- | |
| Name of the OS CMake is running on. | |
| On systems that have the uname command, this variable is set to the | |
| output of ``uname -s``. ``Linux``, ``Windows``, and ``Darwin`` for macOS | |
| are the values found on the big three operating systems. | |
| For a list of possible values, see :variable:`CMAKE_SYSTEM_NAME`. |