Base_directory

(Project Properties window)

*.prj (or .apr)\PROJECT\Base_directory

A base directory pathname enables all sources and build files to be relative to the given directory, if within it or in a subdirectory.

Specifying a base directory also enables the source or build tree to be located in a different location from the project file.

If not set, the directory of the project settings file is used as the default base directory for the project.