message: Add /W4 for MSVS
diff: @@ -91,6 +91,16 @@ foreach(file ${files})
  set_target_properties(${testcase} PROPERTIES COMPILE_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated -Wno-float-equal")
  endif()
  + # https://stackoverflow.com/questions/2368811/how-to-set-warning-level-in-cmake
  + if(MSVC)
  + # Force to always compile with W4
  + if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
  + string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
  + else()
  + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
  + endif()
  + endif()
  +
  add_test(NAME "${testcase}_default"
  COMMAND ${testcase} ${CATCH_TEST_FILTER}
  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
  