[ 
https://issues.apache.org/jira/browse/MCOMPILER-97?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16697702#comment-16697702
 ] 

Stephen Buergler edited comment on MCOMPILER-97 at 11/24/18 8:34 AM:
---------------------------------------------------------------------

If anyone else has this issue: If you use an annotation processor to create the 
META-INF/services/javax.annotation.processing.Processor file then I've noticed 
that everything kind of just works. The file isn't there when the main sources 
are being compiled and it is there when the test sources are being compiled. 
This is the annotation processor I have been using: 
[https://github.com/kohsuke/metainf-services]


was (Author: sixcorners):
If anyone else has this issue. If you use an annotation processor to create the 
META-INF/services/javax.annotation.processing.Processor file then I've noticed 
that everything kind of just works. The file isn't there when the main sources 
are being compiled and it is there when the test sources are being compiled. 
I've been using this project: [https://github.com/kohsuke/metainf-services]

> META-INF/services/javax.annotation.processing.Processor copied before 
> compilation and causes error
> --------------------------------------------------------------------------------------------------
>
>                 Key: MCOMPILER-97
>                 URL: https://issues.apache.org/jira/browse/MCOMPILER-97
>             Project: Maven Compiler Plugin
>          Issue Type: Bug
>    Affects Versions: 2.0.2
>         Environment: Ubuntu 8.10, JDK 6.
>            Reporter: Jesse Glick
>            Priority: Major
>         Attachments: MCOMPILER-97-workaround.zip, maven-6647998-test.zip
>
>
> It is tricky to compile a Maven module which defines a (269-compliant) 
> annotation processor. If you write the code for the processor in 
> src/main/java and register it in src/main/resources, 
> META-INF/services/javax.annotation.processing.Processor is copied to 
> target/classes first, and then javac is run. But javac is given 
> target/classes in -classpath, so it tries to load the processor, which of 
> course has not been compiled yet - a chicken-and-egg problem.
> The most straightforward workaround is to specify 
> <compilerArgument>-proc:none</compilerArgument> in your POM. This will only 
> work, however, if the module does not use any annotation processors defined 
> in dependencies. If it does, there may be some other trick involving 
> -processorpath and Maven variable substitution to insert the dependency 
> classpath.
> Switching the order of resources:resources and compiler:compile would help - 
> at least a clean build would work - though it could still cause problems in 
> incremental builds. Better would be for the compiler plugin to pass 
> -processorpath based on the dependency classpath (i.e. -classpath minus 
> target/classes) when using -source 1.6 or higher.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Reply via email to