Gradle Kotlin DSL - Cannot access 'verbose': it is private in 'CompileOptions'

Question

I am trying to set the verbose flag/option to true in the gradle build script (Kotlin DSL).

Gradle throws error that this property is private and not accessible in Kotlin DSL. The same thing works in Groovy DSL though.

Groovy DSL (working)

plugins {
    id("java")
}

tasks.named("compileJava") {
    options.verbose = true
}

Kotlin DSL (not-working)

plugins {
    id("java")
}

tasks.named<JavaCompile>("compileJava") {
    options.verbose = true
}

Error

Script compilation error:

  Line 32:     options.verbose = true;
                       ^ Cannot access 'verbose': it is private in 'CompileOptions'

1 error

I am sure I am missing something. Any help is appreciated. Thanks.

score 2 · Accepted Answer · answered Dec 20 '22 at 06:57

CompileOptions has a setter for verbose, so this will work

tasks.named<JavaCompile>("compileJava") {
    options.setVerbose(true)
}

It is also possible to set the flag via property:

tasks.named<JavaCompile>("compileJava") {
    options.isVerbose = true
}

score 0 · Answer 2 · answered Dec 20 '22 at 05:45

Not sure why it is private for Kotlin DSL and not for Groovy DSL, but found an alternative using compilerArgs from this stackoverflow post

tasks.named<JavaCompile>("compileJava") {
    val compilerArgs = options.compilerArgs
    compilerArgs.add("-verbose")
}

This, to me, feels a bit low-level since we are directly updating the compiler arguments instead of using objects/maps to set them. Will wait for someone to post a better solution (if it exists).

Gradle Kotlin DSL - Cannot access 'verbose': it is private in 'CompileOptions'

Groovy DSL (working)

Kotlin DSL (not-working)

Error

2 Answers2