+ mutable bool changed;
+
+public:
+ Config(SourcePackage &);
+
+ /** Adds a configuration option based on a feature. */
+ const Option &add_option(const Feature &);
+
+ bool set_option(const std::string &, const std::string &);
+
+ /** Checks whether an option exists. */
+ bool is_option(const std::string &) const;
+
+ /** Gets a configuration option by name. */
+ const Option &get_option(const std::string &) const;
+
+ const std::map<std::string, Option> &get_options() const { return options; }
+ const Msp::Time::TimeStamp &get_mtime() const { return mtime; }
+
+ void load();
+ void save() const;