Maven compiler plugin always detecting a set of sources as “stale”

Question

FIXED: this is a known bug in maven-compiler-plugin 3.1

I am converting an ant-based build of a 1000+ java-sources project to maven. So far so good, but every time l

Answer 1

Faced the same problem. Maven mvn compile with -X option showed that the problem is caused by package-info.java file.

[DEBUG] Stale source detected: .../package-info.java

The problem is that there is no .class file generated for package-info.java.

The solution was found in this PR: https://github.com/apache/flink/pull/5644/files referencing MCOMPILER-205

    -Xpkginfo:always

which means:

Always generate package-info.class for every package-info.java file.