Hello, where should I put the `-Xexpect-actual-cla...

# multiplatform

[David Holas]

Hello, where should I put the -Xexpect-actual-classes to supress the warnings?

My gradle.properties contains org.gradle.jvmargs=-Xmx8192M -Dfile.encoding=UTF-8 -Dkotlin.daemon.jvm.options\="-Xmx8192M" , but idk whether i should put it just there or into -Dkotlin...options . Doing both seems to be causing some gradle issues.

[mbonnin]

Something like this should do it:

tasks.withType(KotlinCompile::class.java).configureEach { 
  kotlinOptions {
    freeCompilerArgs = freeCompilerArgs +"-Xexpect-actual-classes"
  }
}

[mbonnin]

Or alternatively:

kotlin {
  targets.all {
    compilations.all {
      compilerOptions.options.freeCompilerArgs.add("-Xexpect-actual-classes")
    }
  }
}

[mbonnin]

Both are Gradle Kotlin DSL. I don't think you can set Kotlin compiler options from gradle.properties only

[David Holas]

Ok, thank you, I could not find much info on it online.

I'll go for this one, its much more inline with the rest of my file. They are both equivalent by meaning, its just different syntax, right?

```kotlin {

targets.all {

compilations.all {

compilerOptions.options.freeCompilerArgs.add("-Xexpect-actual-classes")

}

}

}```

[mbonnin]

I'm a bit lost TBH, it might depend if you're using multiplatform or not and your Kotlin version. The DSL changed a bit recently

[mbonnin]

Doc is there: https://kotlinlang.org/docs/gradle-compiler-options.html

[David Holas]

Well, I am totally lost in this gradle stuff, but the problem is that cleanbuild is taking about 45min so I don't have much space for experimentation

[mbonnin]

This is how we do it in our repo if you're curious

[Jeff Lockhart]

This is how I'm doing it. I found the KotlinCompile task method didn't work for the IDE to stop showing warnings. But that might have been fixed now in 1.9.22.

[Roland]

Since kotlin 1.9.20 or so you can suppress the warnings this way:

sourceSets {
all { 
languageSettings.enableLanguageFeature("ExpectActualClasses") 
}
val commonMain by getting { ... }
....
}

[David Holas]

I am on 1.9.20 and it does not work for me sadly, so maybe from 1.9.21