maven enforcer plugin

Checking a system property

        <executions>
          <execution>
            <id>enforce-property</id>
            <goals>
              <goal>enforce</goal>
            </goals>            
            <phase>compile</phase>            
          </execution>
        </executions>
        <configuration>
          <rules>
            <<b>requireProperty</b>>
              <property>java7.home</property>
              <message>"You must set a property java7.home!"</message>                  
            </requireProperty>
          </rules>
        </configuration>

more rules

• bannedDependencies - enforces that excluded dependencies aren't included.
• evaluateBeanshell - evaluates a beanshell script.
• requireReleaseDeps - enforces that no snapshots are included as dependencies.
• requireMavenVersion - enforces the Maven version.
• requireJavaVersion - enforces the JDK version.
• requireProperty - enforces the existence and values of properties.
• requireFilesExist - enforces that the list of files do exist.