| CMAKE_VS_PLATFORM_TOOLSET_HOST_ARCHITECTURE | |
| ------------------------------------------- | |
| Visual Studio preferred tool architecture. | |
| The :ref:`Visual Studio Generators` for VS 2013 and above support optional | |
| selection of a 64-bit toolchain on 64-bit hosts by specifying a ``host=64`` | |
| value in the :variable:`CMAKE_GENERATOR_TOOLSET` option. CMake provides | |
| the selected toolchain architecture preference in this variable (either | |
| ``x64`` or empty). |