We currently have only two ways to disable compiler warnings-as-errors: either make none of them errors using --disable-warnings-as-errors or disable all errors with a compiler flag. There is no way to disable specific warnings-as-errors from the SCons command line due to the order of the compiler flags. This matters sometimes when we have a new issue pop up (such as in a new compiler version) where we want to see the warning but not fail the build.