The javadoc does not include the "additional source" files defined using the "build-helper:add-source" in each of my subproject pom files when using javadoc plugin 2.4. The javadoc plugin 2.3 worked correctly.
I use the "build-helper:add-source" to include additional source directories to the build. The additional source directories contain my generated source file. When I run the command using javadoc plugin version 2.4:
mvn javadoc:javadoc -Daggregate=true
(or have the aggregate=true specified inside of the pom) the "build-helper:add-source" is not run for each of the subprojects before the aggregated javadoc is created. Therefore the javadoc does not include the documentation for the files in the additional source directories.
I also noted that the output for 2.3 javadoc plugin is:
[INFO] task-segment: [javadoc:javadoc] (aggregator-style)
but the output for the 2.4 javadoc plugin is:
[INFO] task-segment: [javadoc:javadoc]
I am not sure if the above output is changed between versions or if the "aggregator-style" is not detectd in the 2.4 version and has an influence in this issue.
I have attached the log file for running my project using javadoc plugin version 2.3 and 2.4. Version 2.3 works and version 2.4 does not include the additional source files in the aggregated javadoc.