cl 2>&1 | find "19.00." > NUL && set VS_VERSION=14
cl 2>&1 | find "19.10." > NUL && set VS_VERSION=15
cl 2>&1 | find "19.11." > NUL && set VS_VERSION=15
+ cl 2>&1 | find "19.12." > NUL && set VS_VERSION=15
if not defined VS_VERSION (
echo Error: Visual Studio version too old or version detection failed.
endlocal