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https://issues.apache.org/jira/browse/MJDEPS-30?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elliotte Rusty Harold updated MJDEPS-30:
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Issue Type: Improvement (was: Wish)
> jdeps plugin does not work when JAVA_HOME is not set
> ----------------------------------------------------
>
> Key: MJDEPS-30
> URL: https://issues.apache.org/jira/browse/MJDEPS-30
> Project: Maven JDeps Plugin
> Issue Type: Improvement
> Affects Versions: 3.1.2
> Environment: Ubuntu 22.04.2 LTS
> 5.15.0-69-generic #76-Ubuntu SMP x86_64 GNU/Linux
> Installed JDK:
> Package: openjdk-11-jdk
> Version: 11.0.18+10-0ubuntu1~22.04
> openjdk 11.0.18 2023-01-17
> OpenJDK Runtime Environment (build 11.0.18+10-post-Ubuntu-0ubuntu122.04)
> OpenJDK 64-Bit Server VM (build 11.0.18+10-post-Ubuntu-0ubuntu122.04, mixed
> mode, sharing)
> $JAVA_HOME is empty
> Reporter: Andrii Radistao
> Priority: Minor
>
> When running command
>
> {code:java}
> mvn jdeps:jdkinternals{code}
>
> (or any other maven workflow, which uses {{{}jdeps{}}})
> on _any_ project without specified system environment variable {{JAVA_HOME}}
> - the build fails with the error:
> {quote}[ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-jdeps-plugin:3.1.2:jdkinternals (default-cli)
> on project cloud-backend-internal-client: Unable to find jdeps command: The
> environment variable JAVA_HOME is not correctly set.
> {quote}
> all other maven tools ({{{}javac{}}}, {{{}jar{}}}, tests) and most of other
> plugins work fine without {{JAVA_HOME}} specified
> Note, that we use default java-11 installation on Debian (Ubuntu):
>
> {code:java}
> openjdk-11-jdk:amd64 11.0.18+10-0ubuntu1~22.04 amd64{code}
> which doesn't set JAVA_HOME by default, but still has {{jdeps}} installed and
> provided in the PATH (same as {{javac}} or {{jar}}):
> {code:java}
> $ command -v jdeps
> /usr/bin/jdeps
> $ jdeps --version
> 11.0.18
> The issue happens because {{maven-jdeps-plugin:3.1.2}} resolves executable
> path only by toolchain or JAVA_HOME, but ignores default {{PATH}} (like
> {{javac}} or {{jar}} do) or JDK installation configuration:
> [https://github.com/apache/maven-jdeps-plugin/blob/edcbab0c81a93338dab6fad479108e1102f86ca1/src/main/java/org/apache/maven/plugins/jdeps/AbstractJDepsMojo.java#L455-L465]
>
> {code:java}
> // ----------------------------------------------------------------------
> // Try to find jdepsExe from JAVA_HOME environment variable
> // ----------------------------------------------------------------------
> if ( !jdepsExe.exists() || !jdepsExe.isFile() )
> {
> Properties env = CommandLineUtils.getSystemEnvVars();
> String javaHome = env.getProperty( "JAVA_HOME" );
> if ( StringUtils.isEmpty( javaHome ) )
> {
> throw new IOException( "The environment variable JAVA_HOME is not
> correctly set." );
> }
> {code}
> *Proposition:*
> consider resolving {{jdeps}} executable location either by default {{PATH}}
> or by {{SystemUtils#getJavaHome}}, like in [this
> line|https://github.com/apache/maven-jdeps-plugin/blob/edcbab0c81a93338dab6fad479108e1102f86ca1/src/main/java/org/apache/maven/plugins/jdeps/AbstractJDepsMojo.java#L453-L453]:
> {code:java}
> jdepsExe = new File( SystemUtils.getJavaHome() + File.separator + ".." +
> File.separator + "sh", jdepsCommand );{code}
> *but* without {{".." + File.separator + "sh"}}
> i tried and it proved to work:
> {code:java}
> new File( SystemUtils.getJavaHome() + File.separator + "bin", jdepsCommand
> );{code}
> I can supply a PR if this helps.
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