MSVC_RUNTIME_LIBRARY value 'MultiThreadedDLL' not known for this ASM compiler.
When clang-cl is being used with an effective
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL" CACHE STRING "MSVC Runtime Library"), CMake will fail to configure with an error due to
CMAKE_ASM_COMPILE_OPTIONS_MSVC_RUNTIME_LIBRARY_MultiThreadedDLL not being set. This seems not entirely correct - as there isn't a flag for the runtime library with assembly AFAIK.