CMAKE_VS_PLATFORM_NAME_DEFAULTΒΆ
Added in version 3.14.3.
Default for the Visual Studio target platform name for the current generator
without considering the value of the CMAKE_GENERATOR_PLATFORM
variable. For Visual Studio Generators for VS 2017 and below this is
always Win32. For VS 2019 and above this is based on the host platform.
See also the CMAKE_VS_PLATFORM_NAME variable.