Message        Argument to extern_prefix is not a recognized keyword
                or a quoted string.  Pragma is ignored.

 Description    An invalid argument has been specified for the
                #pragma extern_prefix preprocessing directive.  The
                directive expects either the identifiers "save",
                "__save", "restore", "__restore", or a string
                constant that specifies the external prefix to use.
                The compiler will ignore the pragma.

 User Action    Correct the argument to the pragma.