Each build of the project can have its own settings specifying characteristics of the final output file for this build. In general, settings for a build affect all files belonging to that build. However, for each individual file you can specify settings overriding build settings.
To change build settings:
Click Settings on the Project menu or right-click a build of the current target in the Workspace window and choose Settings from the context menu. The Project Settings dialog appears.
In the Project Settings dialog on the Settings For pane select the build, for which you want to modify settings. When a build is selected the dialog has four tabs – General, MPC, C, Link. Select the options that you want to apply to the build (see Project Settings dialog Options).
Distributed projects overview
Project Settings dialog Options