[MCOMPILER-581] Create second default execution "default-generate-sources" for APT

• Type: Task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Fix Version/s: 4.0.0

Language

Java XML

• Assignee: Unassigned
• Reporter: Benjamin Marwell
• Created: 07/Mar/24 08:35
• Updated: 08/Mar/24 20:10

Description

Starting with version 4.0.0 of this plugin for use with Maven 4+, the following changes should be incorporated to align the compilation process with the process designed by the OpenJDK javac team:

• Modify default-compile to use proc:none by default
• Create a new goal default-generate-sources and use proc:only

This will align the compilation process with the default javac use.

Rationale

Before JDK 21+, no "proc:full" was available and implicitly used when no proc:* was set.
However, starting with JDK 21, proc:full was introduced and not specifying proc:* will now trigger a warning.

Alternatives

Keep one phase but specify proc:full whenever APTs are in the CP or used as a compiler-plugin dependency/path or when APT classes are explicitly given.

Drawbacks of this approach

TODO: document drawbacks of this approach and of the alternatives.