lukewpatterson

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>some.groupId</groupId>
  <artifactId>some.artifactId</artifactId>
  <version>1-SNAPSHOT</version>
  <name>${project.build.directory.portable}</name>
  <properties>
    <project.build.directory.portable>the_value_resolved_before_any_plugin_runs</project.build.directory.portable>
  </properties>
  <build>
    <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-antrun-plugin</artifactId>
          <version>1.4</version>
          <executions>
            <execution>
              <id>echo-maven-property-before-changing</id>
              <phase>validate</phase>
              <goals>
                <goal>run</goal>
              </goals>
              <configuration>
                <tasks>
                  <echo message="${project.build.directory.portable}"/>
                </tasks>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>org.codehaus.groovy.maven</groupId>
          <artifactId>gmaven-plugin</artifactId>
          <version>1.0</version>
          <executions>
            <execution>
              <id>set-maven-property</id>
              <phase>validate</phase>
              <goals>
                <goal>execute</goal>
              </goals>
              <configuration>
                <source>
                  ant.pathconvert(targetos:"unix", property:'project.build.directory.portable') {
                    path(location:project.build.directory)
                  }
                  project.properties.setProperty('project.build.directory.portable', ant.project.properties.'project.build.directory.portable')
                </source>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-antrun-plugin</artifactId>
          <version>1.4</version>
          <executions>
            <execution>
              <id>echo-maven-property-after-changing</id>
              <phase>initialize</phase>
              <goals>
                <goal>run</goal>
              </goals>
              <configuration>
                <tasks>
                  <echo message="${project.build.directory.portable}"/>
                </tasks>
              </configuration>
            </execution>
          </executions>
        </plugin>
    </plugins>
  </build>
</project>