desruisseaux commented on PR #1143:
URL:
https://github.com/apache/maven-compiler-plugin/pull/1143#issuecomment-5967563102
Just a clarification on the following:
> Notably, the annotation-processor path already defaults to
rebuild-on-change — so the behavior was inconsistent: safe with processors,
potentially unsafe without.
In my understanding, the rational for rebuilding all classes when annotation
processing is present was not for safety. It is because annotation processor
can collect information about annotated elements, and therefore may have
incomplete information if we don't rebuild all. Example: a
`@IncludeMeInSomeList` annotation and a processor which, after compilation,
generates a file with all elements having this annotation. The processor needs
all source files at compilation time even if these files are not impacted by
any change. Even if we implemented an accurate tracking of dependencies
("IDE-style incremental build"), we would still need to rebuild all files when
an annotation processor is present.
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