Dependencies¶

The generated code needs a few libraries. By default the plugin adds them for you.

Source set	Dependency	Version
commonMain	ch.ubique.uniffi:runtime	same as the plugin
commonMain	com.squareup.okio:okio	3.18.1
commonMain	org.jetbrains.kotlinx:atomicfu	0.33.0
commonMain	org.jetbrains.kotlinx:kotlinx-coroutines-core	1.11.0
jvmMain	net.java.dev.jna:jna	5.19.1
androidMain	net.java.dev.jna:jna@aar	5.19.1
androidHostTest	net.java.dev.jna:jna	5.19.1

The runtime¶

ch.ubique.uniffi:runtime contains the code that is the same for every crate: buffer handling, type converters, the async helpers, and so on. It is published to Maven Central with the same version as the plugin. Sharing one runtime is what lets multiple modules exchange objects.

To manage the runtime yourself, for example to use a different version:

uniffi {
    addRuntime = false
}

kotlin.sourceSets.commonMain.dependencies {
    implementation("ch.ubique.uniffi:runtime:1.3.0")
}

The runtime must match the generator version. Bindings generated by one version and a runtime of another are not guaranteed to fit together.

The other libraries¶

To pick your own versions of okio, atomicfu, coroutines or JNA:

uniffi {
    addDependencies = false
}

You then have to add all of them yourself, including JNA for JVM and the @aar variant for Android.

ProGuard / R8¶

The runtime ships consumer rules for R8. They keep JNA itself, and every member of classes that extend or implement JNA types, which covers the generated library interface, structures and callbacks. A minified Android app doesn't need extra rules. If you disable addRuntime, copy the rules from runtime/consumer-rules.pro.