42 static const char *progname;    /* program name for error messages */  variable
52   fprintf(stderr, "usage: %s [switches] ", progname);  in usage()
111             progname);  in select_transform()
116           progname);  in select_transform()
171               progname);  in parse_switches()
195                 progname, argv[argn]);  in parse_switches()
260               progname);  in parse_switches()
282               progname);  in parse_switches()
327               progname);  in parse_switches()
394   progname = argv[0];  in main()
395   if (progname == NULL || progname[0] == 0)  in main()
396     progname = "jpegtran";      /* in case C library doesn't provide it */  in main()
422               progname);  in main()
429               progname);  in main()
436     fprintf(stderr, "%s: only one input file\n", progname);  in main()
444       fprintf(stderr, "%s: can't open %s for reading\n", progname, argv[file_index]);  in main()
472     fprintf(stderr, "%s: transformation is not perfect\n", progname);  in main()
507       fprintf(stderr, "%s: can't open %s for writing\n", progname, outfilename);  in main()