Maven Import of Olingo 4.0. code in Eclipse Kepler fails using M2E plugin fails

following are the steps observed
1. Git clone
2. Use eclipse "Import Maven project feature" with Lifecycle mapping added as below
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.antlr</groupId>
<artifactId>antlr4-maven-plugin</artifactId>
<goals>
<goal>antlr4</goal>
</goals>
<versionRange>[4.1,)</versionRange>
</pluginExecutionFilter>
<action>
<execute>
<runOnIncremental>false</runOnIncremental>
</execute>
</action>
</pluginExecution>
3. Eclipse import is successfull. But we see compilation issues in classes
eg org.apache.olingo.server.core.uri.parser.Parser
4. It appears antlr code has been generated but not added to Build path leading to compilation errors.