MSVC_VERSION is empty in superbuild

Try to superbuild paraview v5.12.0. visual studio community 2022. c/c++ compiler is MingW64.

CMake Error at superbuild/projects/win32/boost.cmake:6 (message):
  At least Visual Studio 9.0 is required
Call Stack (most recent call first):
  superbuild/cmake/SuperbuildMacros.cmake:932 (in`Preformatted text`clude)
  superbuild/CMakeLists.txt:196 (_superbuild_discover_projects)
trace the cmake file, because MSVC_VERSION 

Tried to print out the value of MSVC_VERSION in cmake file. it turns out it is empty. wondering where this variable from. envirament variable? or other package write to the windows system. Thanks

Not supported, use MSVC compilers instead.