Sunday, November 23, 2025

migrating GWT2.8.2 to 2.12.2 , GWT version and plugin both

Request for Help: Migrating GWT 2.8.2 → 2.12.2 (Plugin + Version)

We are in the process of migrating our project from GWT 2.8.2 to GWT 2.12.2, including switching from the old Mojo plugin to the new tbroyer gwt-maven-plugin.

  • With GWT 2.8.2 + Mojo plugin, everything has worked fine for several years.

  • After configuring the new plugin, we are running into issues.

Project Structure

Main Application Module com.test.Application.gwt.xml

This module inherits third-party JARs that contain both sources and their own .gwt.xml files:


<module> <inherits name="com.thirdparty.T1"/> </module>

Third-Party JAR (T1) Structure:

Code
src/main/java 
 └── com/thirdparty/... 
              └── T1.gwt.xml

Contents of T1.gwt.xml:


<module> <source path=""/> </module>

Problem

When migrating, compilation fails with:

Code
[ERROR] Line 40: No source code is available

Attempts so far:

  • Tried <source path=""/>

  • Tried <super-source path=""/>

Both approaches fail with the same error.

Question

How should we correctly configure the tbroyer gwt-maven-plugin and module definitions so that third-party JARs with embedded sources and .gwt.xml files are properly recognized under GWT 2.12.2?

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