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https://issues.apache.org/jira/browse/MJAVADOC-703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17461642#comment-17461642
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Thorsten Glaser edited comment on MJAVADOC-703 at 12/17/21, 8:05 PM:
---------------------------------------------------------------------
[~michael-o] [https://github.com/tarent/maven-parent] commit
01e7a681ad6f3b90f08eb436fe9dd4ad3a391f0a with [line 154 in
{{parent/pom.xml}}|https://github.com/tarent/maven-parent/blob/01e7a681ad6f3b90f08eb436fe9dd4ad3a391f0a/parent/pom.xml#L154]
commented out (which forces 3.0.1 for JDK < 9), then a simple {{mvn clean
install}} shows this within under a minute.
(Uhm. But you need to {{git commit -a -m tmp}} (or something) before building,
or remove the {{mksrc-run}} from the top-level POM {{exec-maven-plugin}} or put
an {{exit 0}} on top of {{src/main/ancillary/mksrc.sh}} because it
(deliberately) breaks the build if there are uncommitted changes. Sorry about
that.)
I’m not sure what you mean with “verbose mode”. Setting {{-Dverbose}} or so on
the command line does not change the output? [^verbose1.txt]
PS: Might be related to https://issues.apache.org/jira/browse/MCOMPILER-477
which is pretty much the same but for the maven-compiler-plugin starting past a
certain version. I tested them independently of each other, though.
PPS: A bit more context: the parent POM adds two profiles, one for JDK 8 or
older (testing with 8), one for JDK 9 or newer (testing with 11), which help in
building with old/new JDK targetting old/new JRE (currently supporting/testing
8→8, 11→8, 11→11). Lines 165ff. of {{parent/pom.xml}} add the {{<source>}}
(mjavadoc) or {{<release>}} (mcompiler) configuration item to the plugins only
for 9+, but this does not currently work, which is why we have lines 149ff.
lower the versions of these plugins for 8-. The “to be targetted” JRE version
(by default 8) is set in [line
45|https://github.com/tarent/maven-parent/blob/01e7a681ad6f3b90f08eb436fe9dd4ad3a391f0a/parent/pom.xml#L45]
as user-defined property {{{}$\{javaRelease{}}}}. We then insert this into
various plugins’ configuration blocks further below. {{lib/pom.xml}} is a
(very) tiny library shipped with the “our parent POM” project, and it quickly
exhibits issues with these plugins. The build and runtime environments are
Debian, so the JDK is used from {{/usr/bin/}} via the alternatives subsystem of
Debian, and {{JAVA_HOME}} is not set (which is why [we set
{{javadocExecutable}}
sometimes|https://github.com/tarent/maven-parent/blob/01e7a681ad6f3b90f08eb436fe9dd4ad3a391f0a/parent/pom.xml#L183-L201]).
was (Author: mirabilos):
[~michael-o] [https://github.com/tarent/maven-parent] commit
01e7a681ad6f3b90f08eb436fe9dd4ad3a391f0a with [line 154 in
{{parent/pom.xml}}|https://github.com/tarent/maven-parent/blob/01e7a681ad6f3b90f08eb436fe9dd4ad3a391f0a/parent/pom.xml#L154]
commented out (which forces 3.0.1 for JDK < 9), then a simple {{mvn clean
install}} shows this within under a minute.
(Uhm. But you need to {{git commit -a -m tmp}} (or something) before building,
or remove the {{mksrc-run}} from the top-level POM {{exec-maven-plugin}} or put
an {{exit 0}} on top of {{src/main/ancillary/mksrc.sh}} because it
(deliberately) breaks the build if there are uncommitted changes. Sorry about
that.)
I’m not sure what you mean with “verbose mode”. Setting {{-Dverbose}} or so on
the command line does not change the output? [^verbose1.txt]
PS: Might be related to https://issues.apache.org/jira/browse/MCOMPILER-477
which is pretty much the same but for the maven-compiler-plugin starting past a
certain version. I tested them independently of each other, though.
> maven-javadoc-plugin > 3.0.1 fail on JDK 8
> ------------------------------------------
>
> Key: MJAVADOC-703
> URL: https://issues.apache.org/jira/browse/MJAVADOC-703
> Project: Maven Javadoc Plugin
> Issue Type: Bug
> Affects Versions: 3.1.0, 3.3.1
> Reporter: Thorsten Glaser
> Priority: Major
> Attachments: verbose1.txt
>
>
> Trying to use 3.1.0 or 3.3.1 with JDK 8 results in {{--release}} being passed
> to the {{javadoc}} command, which does not know it in JDK 8:
> {{[ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-javadoc-plugin:3.3.1:jar (attach-javadocs) on
> project maven-parent-lib: MavenReportException: Error while generating
> Javadoc: }}
> {{[ERROR] Exit code: 1 - javadoc: error - invalid flag: --release}}
> {{[ERROR]}}
> {{[ERROR] Command line was:
> /usr/lib/jvm/java-8-openjdk-i386/jre/../bin/javadoc @options @packages}}
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