[antlr-interest] Problems with Maven plugin

[Antonio Petrelli]

Hi all
Sorry for being an ANTLR newbie. I would like to use the Maven plugin.
When I try to generate (through mvn compile) sources of the Java.g 1.6
parser, the plugin gives me an error (full log below in the mail):

error(7):  cannot find or open file: null/Java.g

However, if I copy the same file under the "null" directory, it
generates the code!

I am using Maven 2.2.1 under Linux Kubuntu 9.10 amd64, OpenJDK 1.6 b16

You can check it live at this address:
http://svn.eu.apache.org/repos/asf/tiles/sandbox/trunk/tiles-autotag/tiles-autotag-core/

Thanks in advance
Antonio Petrelli

-----------------
Full Log

mvn clean compile -e
+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Autotag - Core
[INFO]    task-segment: [clean, compile]
[INFO] ------------------------------------------------------------------------
[INFO] [clean:clean {execution: default-clean}]
[INFO] Deleting directory
/home/antonio/javadev/workspace-sandbox/tiles-autotag/tiles-autotag-core/target
[INFO] [antlr3:antlr {execution: default}]
[INFO] ANTLR: Processing source directory
/home/antonio/javadev/workspace-sandbox/tiles-autotag/tiles-autotag-core/src/main/antlr3
ANTLR Parser Generator  Version 3.2 Sep 23, 2009 14:05:07
error(7):  cannot find or open file: null/Java.g
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] ANTLR caught 1 build errors.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: ANTLR caught 1
build errors.
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: ANTLR
caught 1 build errors.
        at org.antlr.mojo.antlr3.Antlr3Mojo.execute(Antlr3Mojo.java:397)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        ... 17 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 second
[INFO] Finished at: Sat Jan 09 20:36:42 CET 2010
[INFO] Final Memory: 9M/67M
[INFO] ------------------------------------------------------------------------

-------------

Maven configuration:

<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>tiles-autotag</artifactId>
        <groupId>org.apache.tiles</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <groupId>org.apache.tiles</groupId>
    <artifactId>tiles-autotag-core</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>Autotag - Core</name>
    <description>Core classes for Autotag.</description>
    <build>
        <plugins>
            <plugin>
                <groupId>org.antlr</groupId>
                <artifactId>antlr3-maven-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <includes>
                        <include>Java.g</include>
                    </includes>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>antlr</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.antlr</groupId>
            <artifactId>antlr-runtime</artifactId>
            <version>3.2</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>
    </dependencies>
</project>