Gradle 5 does not pick annotation processor from project dependency

[ishaigor]

My project has subprojects that are generating different artifacts. Among those, the subproject of interest are

• model - contains annotations that will be used in other sub-projects
• model-processor - contains annotation processor that generates sources for any class found with the annotations from model subproject
• consumer - contains classes annotated with annotations from model subproject that should be accompanied by sources generated by annotation processor from model-processor subproject.

The build.gradle for consumer sub-project looks like

description = ''
dependencies {
    annotationProcessor project(':model-processor')

    compile project(':model')
}

Expected Behavior

I expect to find the generated sources under consumer/build/generated/source/apt/main

Current Behavior

I am not getting the files generated under consumer/build/generated/source/apt/main with the Gradle 5.0. I do get the annotation processor to work with the same build script and Gradle 4.10.2.

Context

I am trying to switch to Gradle 5 from Gradle 4.10.2 where the generation works. If I cannot get the annotation processor to work, I cannot migrate.

Steps to Reproduce (for bugs)

Clone https://github.com/ishaigor/annotation-processor-sample
Follow the steps in README

Your Environment

• Build scan URL:
• https://gradle.com/s/sremu47v5j5kk - non working 5.0
• https://gradle.com/s/5pa5eu7fsrnic - working 4.10.2

[big-guy]

Could you share the build you're seeing this in?

@marcphilipp @oehme anything obvious to check?

[oehme]

Nothing comes to mind, this should work. We'll need a reproducible sample of the problem.

[ishaigor]

@big-guy, @oehme, @marcphilipp, I updated the description with the link to the sample that demonstrates the issue. Is there anything else needed in addition to the sample and the build scans?

[ishaigor]

Thank you for looking into the issue, one annotation processor was not declared: com.google.auto.service. Pushed correction out.

[radzio]

@ishaigor can tell more how you fixed your issue? I have the same and upgrading auto-service didn't help.

[ishaigor]

Take a look at ishaigor/annotation-processor-sample@d764591#diff-366f42343748f0d02147a45a53a2cf62 @radzio

[swathistudyblue]

I have multiple annotations in my project from lombok, slf4j, spring etc. And I created a new annotation and a processor for it. When I register this processor, all the other annotations start throwing compile errors. Is there anything specific I have to do to add to the existing list of processors.

[marcphilipp]

@swathistudyblue You need to add the other processors as dependencies to the annotationProcessor configuration as well.

[oradkovsky]

Upgrading auto-service didn't help for me as well. Fighting build system instead of doing useful work :(

[Yukooo]

Have the same issue, @oradkovsky have you managed to fix it. PS. All files are generated and placed in the $buildDir/generated/sources/annotationProcessor/java/main even the Intelijia Idea see those generated java files, but still, when I try to extend my class with a generated one, gradle can not find it.