Preprocessor: Android symbols not working?

[stephanedupont]

I'm trying to use Manifold as a preprocessor in a Android Studio project.

I installed manifold-ij plugin, and added this to the app build.gradle file:

dependencies {

	...

	compileOnly 'systems.manifold:manifold-preprocessor:2025.1.14'
	compileOnly 'systems.manifold:manifold-preprocessor-android-syms:2025.1.14'
}

// Manifold Javac plugin
getTasks().withType(JavaCompile) {
	options.compilerArgs += ['-Xplugin:Manifold']
}

... and preprocessor seems to work: I can define a symbol in a file and use it with a #if directive.

But I can't seem to make Android symbols working. For example, my project is in debug mode currently, and if I check the BuildConfig.java file I have this:

public final class BuildConfig {
  public static final boolean DEBUG = Boolean.parseBoolean("true");
  ...
}

... but it doesn't work:

I also tested other things like #if FLAVOR, and nothing seems to work.

Did I miss some steps?

[rsmckinney]

Hi @stephanedupont. Android Studio varies depending on JDK target. You might try:

    annotationProcessor 'systems.manifold:manifold-preprocessor:2025.1.14'
    annotationProcessor 'systems.manifold:manifold-preprocessor-android-syms:2025.1.14'

    testAnnotationProcessor 'systems.manifold:manifold-preprocessor:2025.1.14'
    testAnnotationProcessor 'systems.manifold:manifold-preprocessor-android-syms:2025.1.14'

Let me know if that doesn't work for you.

[stephanedupont]

Thank you @rsmckinney. Unfortunately, that still doesn't work.

[stephanedupont]

@rsmckinney: is there a way to debug what's happening?

[rsmckinney]

@stephanedupont sorry for the delay. Can you provide more context re your environment: OS, manifold version, manifold IJ plugin version, intellij/studio version, etc. Thanks!

[stephanedupont]

Thank you @rsmckinney.

OS: Windows 11
Android Studio Meerkat Feature Drop | 2024.3.2
manifold-ij version 2024.1.29

compileOnly 'systems.manifold:manifold-preprocessor:2025.1.14'
compileOnly 'systems.manifold:manifold-preprocessor-android-syms:2025.1.14'

(I'm available for sharing my screen if you need to debug the session.)