Hi,

The mojo parameter regarding headerLocation contains
     * @parameter expression="${checkstyle.header.file}"
default-value="LICENSE.txt"
     */
    private String headerLocation;

This means it's never empty and the mojo search it.
With mvn 2.x, the one from the distribution can be used

Remove the file and launch mvn clean verify -Prun-its
-Dinvoker.test=check-pass* -Dinvoker.streamLogs.

With mvn 2.2.1 (success)
The logs contains
[INFO] [DEBUG] The resource 'LICENSE.txt' was found as
jar:file:/home/olamy/tools/apache-maven-2.2.1/lib/maven-2.2.1-uber.jar!/LICENSE.txt.

with mvn 3.x (failure)
[INFO] Caused by:
org.apache.maven.plugin.checkstyle.CheckstyleExecutorException :
Unable to process header location: LICENSE.txt


IMHO it's better to not using the file from the distribution. But it
looks to not be backward comp.
Sure I should prefer to not have this file here but some builds can
break with mvn 3.x

WDYT ?

Thanks,
--
Olivier

2009/11/20 Dennis Lundberg <denn...@apache.org>:
> Why is this needed?
>
> Shouldn't the license be included by the apache-jar-resource-bundle that
> is being injected by maven-remote-resources-plugin?
>
> ol...@apache.org wrote:
>> Author: olamy
>> Date: Wed Nov 18 23:01:52 2009
>> New Revision: 881985
>>
>> URL: http://svn.apache.org/viewvc?rev=881985&view=rev
>> Log:
>> fix it.
>> Add a LICENSE.TXT (before maven 3 the one from the maven distrib was used)
>>
>> Added:
>>     
>> maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt   
>> (with props)
>> Modified:
>>     maven/plugins/trunk/maven-checkstyle-plugin/pom.xml
>>
>> Modified: maven/plugins/trunk/maven-checkstyle-plugin/pom.xml
>> URL: 
>> http://svn.apache.org/viewvc/maven/plugins/trunk/maven-checkstyle-plugin/pom.xml?rev=881985&r1=881984&r2=881985&view=diff
>> ==============================================================================
>> --- maven/plugins/trunk/maven-checkstyle-plugin/pom.xml (original)
>> +++ maven/plugins/trunk/maven-checkstyle-plugin/pom.xml Wed Nov 18 23:01:52 
>> 2009
>> @@ -251,6 +251,7 @@
>>                
>> <localRepositoryPath>${project.build.directory}/local-repo</localRepositoryPath>
>>                <settingsFile>src/it/settings.xml</settingsFile>
>>                <goals>
>> +                <goal>clean</goal>
>>                  <goal>site</goal>
>>                </goals>
>>              </configuration>
>>
>> Added: 
>> maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt
>> URL: 
>> http://svn.apache.org/viewvc/maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt?rev=881985&view=auto
>> ==============================================================================
>> --- 
>> maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt 
>> (added)
>> +++ 
>> maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt 
>> Wed Nov 18 23:01:52 2009
>> @@ -0,0 +1,202 @@
>> +
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>> Propchange: 
>> maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt
>> ------------------------------------------------------------------------------
>>     svn:eol-style = native
>>
>> Propchange: 
>> maven/plugins/trunk/maven-checkstyle-plugin/src/main/resources/LICENSE.txt
>> ------------------------------------------------------------------------------
>>     svn:keywords = Author Date Id Revision
>>
>>
>>
>
>
> --
> Dennis Lundberg
>
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-- 
Olivier

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