To generate the ckjm-report as part of the site-generation, add the following in the reporting section of your pom:
<reporting>
<plugins>
...
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>ckjm-maven-plugin</artifactId>
</plugin>
...
</plugins>
</reporting>When mvn site is invoked, the report will be automatically included in the Project Reports.