maven/maven-core-it/it0075/pom.xml

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.maven.it</groupId>
  <artifactId>maven-core-it0075-root</artifactId>
  <version>1.0</version>
  <packaging>pom</packaging>

  <modules>
    <module>sub1</module>
  </modules>

  <profiles>
    <profile>
      <id>include-sub2</id>
      <activation>
        <property>
          <name>activate</name>
        </property>
      </activation>

      <modules>
        <module>sub2</module>
      </modules>
    </profile>
  </profiles>
</project>