Warning as Error, but not all

Question

I would like to enable Warning as Error on our current project/solution for obvious reasons.

There are several warnings that should NOT be handled as an error, eg Ob

Answer 1

The warnaserror compiler option supports erroring only on specific warnings. You can thus specify all warnings to be shown as an error, then disable the errors for certain warnings. Using the page's example as a guide:

/warnaserror
/warnaserror-:642,649,652