[How to] make run maven proguard plug-in on OS X

...
<plugin>
<executions>
<execution>
<configuration>
<libs>
<lib>${java.home}/lib/rt.jar</lib>
</libs>
</configuration>
</execution>
</executions>
</plugin>
...

Windows platform.

...
<plugin>
<executions>
<execution>
<configuration>
<libs>
<lib>${java.home}/bundle/Classes/classes.jar</lib>
</libs>
</configuration>
</execution>
</executions>
</plugin>
...

Mac OS X platform.