anyone here was able to migrate to JDK 17 and keep kapt working on android projects? Related <link>

# kapt

[juliocbcotta]

anyone here was able to migrate to JDK 17 and keep kapt working on android projects? Related link

[tapchicoma]

I would advice you to configure Gradle JDK toolchain:

kotlin.jvmToolchain(17)

[juliocbcotta]

The problem is that AGP 8.0 requires JDK 17, setting jvmToolChain 17, forces the bytecode to not be compatible with Android.

[tapchicoma]

you mean running AGP 8.0 requires JDK 17?

[juliocbcotta]

Yes, but the bytecode should be compatible with Java 8/11

[tapchicoma]

then use kotlin.jvmToolchain(8) while running Gradle build on JDK 17

[juliocbcotta]

With that the problem now is that, I will need to have JDK 17 and JDK 8/11 installed in the dev machine and CI server.

[juliocbcotta]

as stated in the stackoverflow thread.... Kotlin should not bind the bytecode compatibility with the jvmToolChain

[tapchicoma]

Gradle should autoprovision missing JDKs required for build.

If you really don't want to use toolchain - you could just configure Kotlin jvm target:

tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile>().configureEach {
    compilerOptions.jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_1_8)
}

[trevjones]

Yes, but the bytecode should be compatible with Java 8/11

That seems wrong to me. We have everything pointed at JDK17 and its been fine. D8/R8 seem to handle it fine.

We also have library desugaring via

# <https://developer.android.com/studio/write/java8-support#library-desugaring-versions>
desugar-jdk = { group = "com.android.tools", name = "desugar_jdk_libs", version = "2.0.3" }