pp_error_directive.i:3: Warning 204: CPP #warning, "Print this warning".
pp_error_directive.i:5: Error: CPP #error "This is an error". Use the -cpperraswarn option to continue swig processing.
pp_error_directive.i:7: Error: CPP #error "Another error". Use the -cpperraswarn option to continue swig processing.
pp_error_directive.i:9: Warning 204: CPP #warning, "Another warning".
pp_error_directive.i:12: Error: CPP #error "Test it's OK to use an apostrophe". Use the -cpperraswarn option to continue swig processing.
pp_error_directive.i:13: Warning 204: CPP #warning, "An unmatched " should be OK too".