%runtime "swigrun.swg"        // Common C API type-checking code
%runtime "swigerrors.swg"     // SWIG errors
%runtime "perlhead.swg"       // Perl includes and fixes
%runtime "perlerrors.swg"     // Perl errors 
%runtime "perlrun.swg"        // Perl runtime functions
%runtime "noembed.h"          // undefine Perl5 macros