Defer properties evaluation in Maven sub-modules - maven

Question

I have some problems trying to run maven in a 3-level multi-module project.
The first level is the super-pom, which defines antrun tasks. It is located in an external repository.
The second one refers to the super-pom, and only include the definition of submodules. Let's say it is in /project
The third level contains the sub-module and its items are located at /project/moduleN.
At the first level, AntRun tasks includes calls to "${project.basedir}".
When I use maven, I go to the second level pom folder and run mvn clean install.
As it only includes sub-modules, it tries to compile them but ${project.basedir} has already been evaluated as being /project, and not /project/moduleN.
I would like to defer the evaluation of those expressions in order to replace them with values from my sub-modules, and not from the pom including them, but I can't find a way to do so.
Here are excerpts from POM files to understand what's going on :
Super POM
<groupId>org.example</groupId>
<artifactId>superpom</artifactId>
<packaging>pom</packaging>
...
<plugins>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
...
<exec dir="${project.basedir}" ...></exec>
</plugin>
</plugins>
Project POM
<parent>
<groupId>org.example</groupId>
<artifactId>superpom</artifactId>
</parent>
<groupId>org.example</groupId>
<artifactId>projectPom</artifactId>
<packaging>pom</packaging>
<modules>
<module>module1</module>
<module>module2</module>
</modules>
Modules POM
<parent>
<groupId>org.example</groupId>
<artifactId>projectPom</artifactId>
</parent>
<groupId>org.example</groupId>
<artifactId>moduleNPom</artifactId>
<packaging>jar</packaging>