I tried bumping Gradle to 8.0 but I’m running into...

# android

[gsala]

I tried bumping Gradle to 8.0 but I’m running into this error:

> ‘compileDebugJavaWithJavac’ task (current target is 11) and ‘kaptGenerateStubsDebugKotlin’ task (current target is 17) jvm target compatibility should be set to the same Java version.

I’m running Gradle on JVM version 17, and I have set the `sourceCompatibility`/`targetCompatibility`/`jvmTarget` options in the my build.gradle files to JavaVersion.VERSION_11 .
The error disappears if I align the Gradle JVM and target versions to be either 11 or 17, but I didn’t think these versions needed to be aligned.
Does anyone have any input on what versions we should be using?

[Charlie Tapping]

Its a bug

[Charlie Tapping]

you can fix with

[Charlie Tapping]

tasks.withType<KaptGenerateStubsTask>().configureEach {
kotlinOptions.jvmTarget = libs.versions.java.bytecode.version.get()
}

[gsala]

Do you have a link to an issue tracking this?

[Charlie Tapping]

You can read Robs post on SO here for more info

[Chrimaeon]

Setting the source/targetCompatibility is not enough any more. you need to configure the toolchain correctly.
I.e. read over here https://blog.jetbrains.com/kotlin/2021/11/gradle-jvm-toolchain-support-in-the-kotlin-plugin/

[itnoles]

kotlin { toolchain(11) } inside android { }?

[Billy Newman]

I am running into that same issue, using the following with gradle 8:

compileOptions {
    sourceCompatibility JavaVersion.VERSION_17
    targetCompatibility JavaVersion.VERSION_17
}
kotlin {
    jvmToolchain(17)
}
kotlinOptions {
    jvmTarget = "17"
}

Still no luck, any ideas?

[gsala]

Check out this PR in Now In Android. They have a workaround

[gsala]

Part of it got corrected here though https://github.com/android/nowinandroid/pull/689

[itnoles]

Intellij IDEA keep bumping Java Runtime up to 17 (now?), it forcing AGP to increase it

[Billy Newman]

Ideas? This is in my android block in build.gradle file

[itnoles]

kotlinOptions {} not work inside of android {}?

[Billy Newman]

More so its having an issue finding tasks.withType I think

[Billy Newman]

Syntax issue as I am using groovy , not kotlin

tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {
    kotlinOptions {
        jvmTarget = "11"
    }
}

[Billy Newman]

This is maddening:

Execution failed for task ':app:kaptGenerateStubsDebugKotlin'.
> 'compileDebugJavaWithJavac' task (current target is 1.8) and 'kaptGenerateStubsDebugKotlin' task (current target is 11) jvm target compatibility should be set to the same Java version.
  Consider using JVM toolchain: <https://kotl.in/gradle/jvm/toolchain>

[itnoles]

tasks.withType<KaptGenerateStubsTask>().configureEach {
    kotlinOptions.jvmTarget = "11"
}