To install the latest version, add the following to the lib/bld/bld-wrapper.properties file:

bld.extension-kotlin=com.uwyn.rife2:bld-kotlin

For more information, please refer to the extensions and support documentation.

To compile the source code located in src/main/kotlin and src/test/kotlin from the current project add the following to the build file:

@BuildCommand(summary = "Compiles the Kotlin project")
public void compile() throws Exception {
    new CompileKotlinOperation()
            .fromProject(this)
            .execute();
}

./bld compile

• View Examples Project
• View Template Project

Please check the Compile Operation documentation for all available configuration options.

Please make sure the Kotlin compiler is installed.

The extension will look in common locations such as:

• KOTLIN_HOME
• PATH
• SDKMAN!
• Homebrew
• JetBrains Toolbox (IntelliJ IDEA, Android Studio)
• etc.

You can also manually configure the Kotlin home location as follows:

@BuildCommand(summary = "Compiles the Kotlin project")
public void compile() throws Exception {
    new CompileKotlinOperation()
            .fromProject(this)
            .kotlinHome("path/to/kotlin")
            .execute();
}

The Kotlin compiler executable can also be specified directly:

@BuildCommand(summary = "Compiles the Kotlin project")
public void compile() throws Exception {
    new CompileKotlinOperation()
            .fromProject(this)
            .kotlinc("/usr/bin/kotlinc")
            .execute();
}

While older version of Kotlin are likely working with the extension, only version 1.9.25 or higher are officially supported.

There is also a Template Project with support for the Dokka and Detekt extensions.