+ if (starting_file_option && !IS_SUBCOMMAND_CLASS (SUBCL_READ))
+ option_conflict_error ("--starting-file",
+ subcommand_string (subcommand_option));
+
+ if (same_order_option && !IS_SUBCOMMAND_CLASS (SUBCL_READ))
+ option_conflict_error ("--same-order",
+ subcommand_string (subcommand_option));
+
+ if (one_top_level_option)
+ {
+ char *base;
+
+ if (absolute_names_option)
+ option_conflict_error ("--one-top-level", "--absolute-names");
+
+ if (!one_top_level_dir)
+ {
+ /* If the user wants to guarantee that everything is under one
+ directory, determine its name now and let it be created later. */
+ base = base_name (archive_name_array[0]);
+ one_top_level_dir = strip_compression_suffix (base);
+ free (base);
+
+ if (!one_top_level_dir)
+ USAGE_ERROR ((0, 0,
+ _("Cannot deduce top-level directory name; "
+ "please set it explicitly with --one-top-level=DIR")));
+ }
+ }
+