Verify that you have installed the EXAMPLES component. This source component, which contains a number of small applications, is built on top of the os and nucleus levels (See Table 1-1 for further details of component hierarchy).
The reconfigure target adds components to the initial configuration. Add the EXAMPLES component to your initial work directory, and build it as follows:
host% make reconfigure NEWCONF='-s <src_dir>/opt/examples' host% make