//  malloc/free implementations in?

	input = strdup(optarg);

      else if(curopt == 'o')

	output = strdup(optarg);

    }

     // give this error after the general arguments parsing so that

     // the general help from options_init can have effect

  if(!input

     || !output)

    {

      fprintf(stderr, "Input and output files must be specified\n");

      return 1;

    }

  fprintf(stderr, "reading from %s\nwriting to %s\n", input, output);

  if(distren_init_mf(&distren, &malloc, &free))

    {

      fprintf(stderr, "error initializing distren handle\n");

      return 1;

    }

  if(distren_submit_file(distren, &distren_job, input))

    {

      fprintf(stderr, "error submitting file\n");

      return 1;

    }

  if(distren_job_getid(distren_job, &jobid))

    {

      fprintf(stderr, "error retrieving job id\n");

      return 1;

    }

  fprintf(stdout, "jobid: %s\n", jobid);

  if(distren_job_retrieve_file(distren_job, output))

    {

      fprintf(stderr, "error retrieving output file\n");

      return 1;

    }

  // if these following lines fail, it'll be reported as a core dump ;-)

  distren_job_free(distren_job);

  distren_free(distren);

 return 0;

};