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https://issues.apache.org/jira/browse/MTOOLCHAINS-58?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17955287#comment-17955287
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Alex Galvin commented on MTOOLCHAINS-58:
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I can confirm this issue also occurs with the latest Eclipse Adoptium JDK 8 on
Linux.
I believe the root cause is that
{{org.apache.maven.artifact.versioning.DefaultArtifactVersion.parseVersion}}
doesn't correctly handle the legacy pre-Java 9 version scheme. It tries to
parse {{0_432}} as an integer and falls back to exact string matching when it
cannot.
> Auto-detected Azul Zulu OpenJDK 8 is not found when selecting version 8, 1.8
> or 1.8.0
> -------------------------------------------------------------------------------------
>
> Key: MTOOLCHAINS-58
> URL: https://issues.apache.org/jira/browse/MTOOLCHAINS-58
> Project: Maven Toolchains Plugin (Moved to GitHub Issues)
> Issue Type: Bug
> Affects Versions: 3.2.0
> Reporter: Nils Breunese
> Priority: Major
>
> I have [Azul Zulu OpenJDK
> 8|https://www.azul.com/downloads/?version=java-8-lts&package=jdk#zulu]
> installed, and it is indeed auto-discovered by
> {{toolchains:display-discovered-jdk-toolchains}}:
> {code}
> [INFO] -
> /opt/local/Library/Java/JavaVirtualMachines/openjdk8-zulu/Contents/Home
> [INFO] provides:
> [INFO] version: 1.8.0_432
> [INFO] runtime.name: OpenJDK Runtime Environment
> [INFO] runtime.version: 1.8.0_432-b06
> [INFO] vendor: Azul Systems, Inc.
> [INFO] lts: true
> {code}
> I then want Maven to use Java 1.8 to build this project by adding this:
> {code}
> <build>
> <plugins>
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-toolchains-plugin</artifactId>
> <version>3.2.0</version>
> <executions>
> <execution>
> <goals>
> <goal>select-jdk-toolchain</goal>
> </goals>
> <configuration>
> <version>1.8</version>
> </configuration>
> </execution>
> </executions>
> </plugin>
> </plugins>
> </build>
> {code}
> But then I get this error message:
> {code}
> org.apache.maven.plugin.MojoFailureException: Cannot find matching toolchain
> definitions for the following toolchain types:{version=1.8}
> Define the required toolchains in your ~/.m2/toolchains.xml file.
> {code}
> I want to avoid developers having to maintain a {{toolchains.xml}}, and I've
> verified that this method does work for projects that use JDK 21 (also
> without a {{toolchains.xml}}, using auto-discovery).
> I've also tried setting the version to {{8}} and {{1.8.0}}, but that also
> didn't work.
> Setting the version to {{1.8.0_432}} does work, but I don't want to force
> other developers to have this exact Java 8 build installed.
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