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https://issues.apache.org/jira/browse/MCOMPILER-548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17823654#comment-17823654
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ASF GitHub Bot commented on MCOMPILER-548:
------------------------------------------
kwin commented on code in PR #200:
URL:
https://github.com/apache/maven-compiler-plugin/pull/200#discussion_r1512962253
##########
src/main/java/org/apache/maven/plugin/compiler/AbstractCompilerMojo.java:
##########
@@ -279,8 +279,11 @@ public abstract class AbstractCompilerMojo extends
AbstractMojo {
* <ul>
* <li><code>none</code> - no annotation processing is performed.</li>
* <li><code>only</code> - only annotation processing is done, no
compilation.</li>
+ * <li><code>full</code> - annotation processing and compilation.</li>
* </ul>
*
+ * <code>full</code> is the default. Starting with JDK 21, this option
must be set explicitly.
Review Comment:
We can use conditions depending on the javac version (as we currently do in
https://github.com/codehaus-plexus/plexus-compiler/blob/d8e98dda661b2e976f5382d43bb87dea1434381f/plexus-compilers/plexus-compiler-javac/src/main/java/org/codehaus/plexus/compiler/javac/JavacCompiler.java#L348).
But IMHO m-compiler-p should add a more high level abstraction, as other
compilers might handle that differently...
> JDK 21 throws annotations processing warning that can not be turned off
> -----------------------------------------------------------------------
>
> Key: MCOMPILER-548
> URL: https://issues.apache.org/jira/browse/MCOMPILER-548
> Project: Maven Compiler Plugin
> Issue Type: Bug
> Affects Versions: 3.11.0
> Reporter: Henning Schmiedehausen
> Priority: Major
>
> maven compiler plugin 3.11 on Java 21 reports
> {quote}
> [INFO] Annotation processing is enabled because one or more processors were
> found
> on the class path. A future release of javac may disable annotation
> processing
> unless at least one processor is specified by name (-processor), or a search
> path is specified (--processor-path, --processor-module-path), or annotation
> processing is enabled explicitly (-proc:only, -proc:full).
> Use -Xlint:-options to suppress this message.
> Use -proc:none to disable annotation processing.
> {quote}
> However, the {{<proc>}} option only supports "none" and "proc", not "full"
> (which is the implicit default).
> Adding this through a compiler option:
> {quote}
> <configuration>
> <compilerArgs>
> <arg>-proc:full</arg>
> </compilerArgs>
> </configuration>
> {quote}
> fixes this warning. Adding "full" as a value for the compiler plugin would
> fix it, too.
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