+ /// Returns the primary target associated with a side effect target.
+ Target *get_primary_target() const { return primary_target; }
+
+ /** Tries to locate a target that will help getting this target built. If
+ all dependencies are up-to-date, returns this target. If there are no
+ targets ready to be built (maybe because they are being built right now),
+ returns 0. */
+ virtual Target *get_buildable_target();
+
+ /** If this target is a proxy for another (such as InstalledFile), return
+ that target. Otherwise, return the target itself. Implementors should call
+ the function recursively to find the final target. */
+ virtual Target *get_real_target() { return this; }
+
+ void set_tool(Tool &);
+
+ /** Returns the tool used to build the target. To actually build it, call
+ the build() function. */
+ const Tool *get_tool() const { return tool; }
+
+ virtual void collect_build_info(BuildInfo &) const;
+
+ /** Indicates if it's possible to build this target. */
+ bool is_buildable() const { return tool!=0; }
+
+ /** Indicates if this target needs rebuilding. Only makes sense after the
+ target has been prepared. */
+ bool needs_rebuild() const { return state>PREPARING && state<UPTODATE; }
+
+ /** Returns the reason for rebuilding this target. Only makes sense after
+ the target has been prepared. */