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https://issues.apache.org/jira/browse/MJAVADOC-646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17195280#comment-17195280
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Benjamin Marwell commented on MJAVADOC-646:
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Related: https://issues.apache.org/jira/browse/MJAVADOC-650
I (personally) do not think this case is useful, as you would usually have a
JDK installation anyway, and the fix from MJAVADOC-650 would fix finding the
javadoc binary in this case as well.
> Look for javadoc binary in the PATH as well
> -------------------------------------------
>
> Key: MJAVADOC-646
> URL: https://issues.apache.org/jira/browse/MJAVADOC-646
> Project: Maven Javadoc Plugin
> Issue Type: Improvement
> Components: javadoc
> Affects Versions: 3.2.0
> Reporter: Antonin Delpeuch
> Priority: Minor
>
> Currently, the maven-javadoc-plugin tries to locate the javadoc binary as
> follows:
> * either the path to the javadoc executable has been set by the user in the
> configuration;
> * or we look for it in the directory designated by the `java.home` system
> property
> * or we look for it in the directory designated by the `JAVA_HOME`
> environment variable
> If none of these work, we fail with the message "Unable to find javadoc
> command".
> In some environments, such as on Debian Sid with OpenJDK 12, the JAVA_HOME
> property is not used by default and the javadoc binary is actually located in
> the PATH, at `/usr/bin/javadoc`. This is a problem: as a user, my options are
> to manually symlink that javadoc into the installation folder of the JDK (not
> great) or write down the `/usr/bin/javadoc` path in the plugin's
> configuration (which is going to lead to failures in other environments).
> This problem seems to be fairly common:
> [https://stackoverflow.com/questions/13961615/unable-to-find-javadoc-command-maven]
> [https://stackoverflow.com/questions/49472783/maven-is-unable-to-find-javadoc-command]
> [https://mail-archives.apache.org/mod_mbox/maven-dev/202003.mbox/browser]
> Therefore I propose to adapt to look for the javadoc binary in the PATH as a
> last resort attempt, before failing.
> I can do a pull request for this if given the assurance that this is
> something you would be happy to have.
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