org.commonjava.maven.plugins:directory-maven-plugin 0.2

Provides goals to discover various paths based on the projects currently building. For example, directory of the execution root project, directory of a given project (based on groupId/artifactId), and highest project basedir that hasn't been resolved from the repository.

<plugin>
    <groupId>org.commonjava.maven.plugins</groupId>
    <artifactId>directory-maven-plugin</artifactId>
    <version>0.2</version>
</plugin>