[MPMD-399] Incorrect warning: The project X does not seem to be compiled. PMD results might be inaccurate. (original) (raw)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.22.0
• Component/s: PMD

PMD plugin is reporting the following warnings on in a multi-maven project:
"The project X does not seem to be compiled. PMD results might be inaccurate."

This is caused by the fact that not all modules have a

• src/main/java or
• src/test/java directory

and therefore no target/classes or target/test-classes directories are generated.

The affected code that causes the problem can be found here:
https://github.com/apache/maven-pmd-plugin/blob/1961d771ea585e9344c25dfde194ee64a1b9040b/src/main/java/org/apache/maven/plugins/pmd/PmdReport.java#L516-L532

Reproduction example

• Create a maven multi-module project
• Leave src/main/java of one module empty
• Execute pmd:aggregate-pmd or test pmd:aggregate-pmd-no-fork -DskipTests

→ Warning is reported

Possible fixes

• Make it possible to ignore this warning
• Do not warn when at least target/classes or target/test-classes is present