#ifdef LIBTIFF
    TRY("pnmtotiff", pnmtotiff_main);
    TRY("tifftopnm", tifftopnm_main);
#endif /*LIBTIFF*/

    (void) fprintf(
	stderr, "pbmplus: \"%s\" is an unknown pbmplus program!\n", cp );
    exit( 1 );
    }