You can s elect a .mmp or .mk file in the Project Explorer, C/C++ Projects, or Symbian Project Navigator view and right-click to display the context menu. Select Clean Symbian Component (CTRL+ALT+X) to clean the selected MMP project file or makefile. You can also right-click the file in an editor view to see the same option. The cleaning process removes the object and make files, and output files. The files that are removed by this command include all the intermediate files created during compilation and all the executables and import libraries created by the linker.
Figure 1. Clean Symbian Component context menu