Roberto Araujo created MPMD-392:
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Summary: Allow skip maven toolchain configuration
Key: MPMD-392
URL: https://issues.apache.org/jira/browse/MPMD-392
Project: Maven PMD Plugin
Issue Type: New Feature
Reporter: Roberto Araujo
I think it's a good idea allow skip the usage of maven toolchain, let me give
my use case:
I'm working on a "legacy" java application. The application is compiled
targeting Java 6. Our build requires Java 17, so we are using the JDK 6
toolchain (via Maven Toolchain plugin) to compile the source code (Note that
Java 17 compiler can't target Java 6 bytecode).
The problem is that PMD Plugin will use the configured toolchain. Obviously,
the latest version is not compatible with Java 6 so the execution fails with
the following exception:
```
Exception in thread "main" java.lang.UnsupportedClassVersionError:
org/apache/maven/plugins/pmd/exec/PmdExecutor : Unsupported major.minor version
52.0
```
One option is to configure a new toolchain just to PMD plugin and use the
`<jdkToolchain>`option
(https://maven.apache.org/plugins/maven-pmd-plugin/pmd-mojo.html#jdkToolchain).
A Much more portable solution is to skip the usage of configured toolchain, so
we don't depend of the `settings.xml` file.
If this makes sense, I can try to work on it and fire a PR on the GitHub
repository.
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