Does not import a standard library.
/nostdlib[+ | -]
- +| -
/nostdlib or /nostdlib+ option causes the compiler to not import mscorlib.dll. Use this option if you want to define or create your own System namespace and objects. If you do not specify /nostdlib, mscorlib.dll will be imported into your program (same as specifying /nostdlib-).
Specifying /nostdlib+ also specifies /autoref-.
If you have a component called System. String (or any other name in mscorlib) the only way you could get at your component would be to use
to search your library before mscorlib. Commonly, you would not define a namespace in your application named System.