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

It is possible in VS2005 assuming you are using C#.

From http://blogs.msdn.com/kaevans/archive/2005/11/06/489681.aspx

In Visual Studio 2005, you have a couple more options to control this. Now, you have 3 options for treating warnings as errors: All, None, or Specific Warnings, where you can provide a semi-colon separated list of error numbers.

It is also possible to do it with GCC with the option -Werror=