Is it possible to import `org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension` class to my ...

# gradle

[Radoslaw Juszczyk]

Is it possible to import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension class to my buildSrc module?

I have written an extension function for configuring my ios target in my multiplatform project, but since it is also multi module project I have that function repeated in each module’s gradle script - would be nice to be able to move that to one place.

[Vampire]

Why shouldn't it be possible?

[Radoslaw Juszczyk]

It cannot resolve this class, I guess I should add some dependency to make it available

[Radoslaw Juszczyk]

If I write:

val a: org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension? = null

it gives me an error:

Unresolved reference: kotlin

This is my build.gradle.kts of buildSrc:

plugins {
    `kotlin-dsl`
}

repositories {
    jcenter()
}

[Radoslaw Juszczyk]

DependencyHandlerScope is resolved correctly but not KotlinMultiplatformExtension

[Vampire]

Because the first is part of the Gradle built-in Kotlin DSL, the second not

[Vampire]

You can see here: https://search.maven.org/search?q=fc:org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension
that it is part of the kotlin-gradle-plugin, so it should work if you add that to your dependencies

[Radoslaw Juszczyk]

yeah that was my idea to add

implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.10")

[Radoslaw Juszczyk]

to dependencies inside buildSrc/build.gradle.kts

[Radoslaw Juszczyk]

Adding that results with an error:

* Exception is:
java.lang.NoClassDefFoundError: com/android/build/gradle/BaseExtension
at org.jetbrains.kotlin.gradle.plugin.AbstractAndroidProjectHandler.configureTarget(KotlinPlugin.kt:765)
at org.jetbrains.kotlin.gradle.plugin.KotlinAndroidPlugin$Companion.applyToTarget(KotlinPlugin.kt:727)
at org.jetbrains.kotlin.gradle.plugin.KotlinAndroidPlugin.apply(KotlinPlugin.kt:689)
at org.jetbrains.kotlin.gradle.plugin.KotlinAndroidPlugin.apply(KotlinPlugin.kt:678)

at org.jetbrains.kotlin.gradle.plugin.KotlinBasePluginWrapper.apply(KotlinPluginWrapper.kt:102)

[Radoslaw Juszczyk]

changing

implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.10")

to

compileOnly("org.jetbrains.kotlin:kotlin-gradle-plugin:1.4.10")

[Radoslaw Juszczyk]

resolves the problem

[Radoslaw Juszczyk]

thanks a lot 🙂