CMakeDetermineVSServicePack
Deprecated. Do not use.
The functionality of this module has been superseded by the CMAKE_<LANG>_COMPILER_VERSION variable that contains the compiler version number.
Determine the Visual Studio service pack of the ‘cl’ in use.
Usage:
if(MSVC)
  include(CMakeDetermineVSServicePack)
  DetermineVSServicePack( my_service_pack )
  if( my_service_pack )
    message(STATUS "Detected: ${my_service_pack}")
  endif()
endif()
 Function DetermineVSServicePack sets the given variable to one of the following values or an empty string if unknown:
vc80, vc80sp1 vc90, vc90sp1 vc100, vc100sp1 vc110, vc110sp1, vc110sp2, vc110sp3, vc110sp4
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Licensed under the BSD 3-clause License.
    https://cmake.org/cmake/help/v3.5/module/CMakeDetermineVSServicePack.html