I think I have run into this issue: https://stackoverflow.com/questions/2567498/objective-c-categories-in-static-library/9224606 while trying to convert a iPhone staticLibrary to klib, where the objective-C code uses categories to extend dictionary methods. Is there currently any way to resolve this with kotlin native (without having to add extra linker options inside the xcode project later)? The issue I currently get when running my ios Target:

-[__NSDictionaryM bsg_ksc_safeSetObject:forKey:]: unrecognized selector sent to instance 0x281678f60

I feel dumb - what is best way to get C string allocated in nativeHeap from Kotlin String?

Is Kotlin Native a good choice for a cross-platform CLI tool? I see that it can target pretty much everything. But I don’t need a GUI or anything. Initially I was going to use Go but I figured I should at least research Kotlin Native.

I am trying to use Kotlin Native Framework in my Swift files in AppCode but there is no autocompletion. But it works in XCode in the same project. Is there any way to make it work?

I was trying out the new CocoaPods support for Kotlin/Native, so I can include Firebase as a pod on my iOS project. Unfortunately, it looks like subspecs are not supported, which prevents me from adding the Firebase pod. Is there a way to get this working? Or is there an issue I can follow regarding subspecs?

How to add dependency to

XCTest

framework? Just

iosX64 {
        compilations.getByName("main") {
            val xctestinterop = cinterops.create("XCTest")
        }
    }

would work?

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If making a background thread call from Swift, does that method need to call

initRuntimeIfNeeded

or will that be called by interop code (same question for a property instead of a method)

We currently have an iOS app using K/N live in production 😄 Unfortunately, in rare instances (and something we can not reproduce in house) our customers get this crash. A block seems to be released by iOS which in turn causes a lambda contained within our K/N framework to be released on a background thread, something we have no control over. I think it’s related to this github issue: https://github.com/JetBrains/kotlin-native/issues/2052 We are also using K/N v1.3.30. We also tried freezing this lambda, but we require some mutations to take place, so we couldn’t go do this in the end. Would anyone be able to help with this?

Hello everyone. I have another issue with Kotlin Cocoapods plugin. I have tried to add some Kotlin dependencies like ktor, coroutines and serialisation. And now XCode project build fails on the linking step with not finding dependencies error:

:-1: e: /Users/oleksandr.stepanov/Documents/Kotlin/kotlin-native/samples/cocoapods/kotlin-library/src/commonMain/kotlin/model/WikiApi.kt: (3, 8): Unresolved reference: io
/Users/oleksandr.stepanov/Documents/Kotlin/kotlin-native/samples/cocoapods/kotlin-library/src/commonMain/kotlin/model/WikiApi.kt: (4, 8): Unresolved reference: io
/Users/oleksandr.stepanov/Documents/Kotlin/kotlin-native/samples/cocoapods/kotlin-library/src/commonMain/kotlin/model/WikiApi.kt: (5, 8): Unresolved reference: io
....

I have pushed my changes in the fork: https://github.com/OlexandrStepanov/kotlin-native/tree/cocoapods-ktor-issue Help what could be wrong in Gradle scripts would be much appreciated. cc @svyatoslav.scherbina

Am I missing something, or why can't I use embedBitcode on a staticLib while on framework I can?

Are there regularly deployed dev snapshot builds of K/N somewhere? I looked through various readmes and didn't see anything (sorry if I missed it)?

Currently, kotlin/native Linux targets can be built on Windows and macOS. Is there any potential for the reverse, i.e. Windows or macOS targets being able to be built on Linux?

I followed the Multiplatform Project: iOS and Android tutorial. everything is working great, except I don't see how to access Android platform APIs from my

androidMain/

code. i try adding

import platform.android.*

, which i've seen in various examples online, but I get

Unresolved reference: platform

. I assume my

build.gradle

is misconfigured, any ideas what I'm missing?

here's my

build.gradle

So, errors and iOS. Looking at https://github.com/JetBrains/kotlin-native/blob/master/OBJC_INTEROP.md, it mentions if we want to have an explicit throw check, add @Throws, but I have some more questions. If calling directly into kotlin code from swift (and presumably objc), on a method without @Throws, if the code throws an exception the app will crash. This is what I’d expect to happen. However… (to thread)

Is there a platform independent way of invoking a subprocess?

if i’m using a k/n dynamic library from C, is there a way to go from an

Any

struct to a primitive type? For example, if I know a particular instance of

Any

contains an int, how can i get it out of the

Any

struct? I tried

int l = *(int *) kotlin_any.pinned;

, which doesn’t appear to work

I'm looking for a way to use a CoAP lib on iOS in my Kotlin/Native code. I found a C library (https://github.com/obgm/libcoap) which does what I need. I don't have a lot of experience with C so this is quite new for me. Could anyone tell me if it would be possible to use this library in Kotlin on iOS using cinterop?

i use

() -> Unit

to require a function that takes nothing and returns nothing. but to provide a function like this from Swift, the function has to return a

KotlinUnit

. is there a way to avoid that?

is it possible to convert a Kotlin

ByteArray

to Swift

Data

without copying every byte?

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What would be the best way to create an implementation for suspend functions in Swift/ObjectiveC? Suspend functions are not visible in the exported framework, this is because ObjectiveC does not have “suspend functions” (https://github.com/JetBrains/kotlin-native/issues/1684). I use suspend functions for showing a dialog (a dialog can return a result or be cancelled). For example the following View interface:

interface View : MvpView {
    // shows a dialog which returns a String.
    suspend fun showDialog(): String
}

I’m not sure how I can implement this for iOS. I thought the following workaround would work:

interface View : MvpView {
    // implement this in Android (Kotlin)
    suspend fun showDialog(): String = suspendCancellableCoroutine { showDialog(it) }

    // implement this in iOS (Swift)
    fun showDialog(cont: CancellableContinuation<String>): Unit = throw NotImplementedError()
}

This would allow me to use suspend functions from the calling code and the Android implementation, and just a normal function for iOS. However, it looks like default functions for interfaces are not supported. (https://github.com/JetBrains/kotlin-native/issues/2638) What would be the best way to solve this? Not use suspend functions at all?

Are channels supported for iOS yet? I keep getting a Typecast Exception when I push anything to a channel, and cant figure out what I am doing wrong.

linkMyLibReleaseFrameworkIos

takes extremely long (multiple minutes) on my dev machine after a small change. i have like 2,000 lines of code. is this expected or is my build misconfigured?

Correct me if I'm wrong, but there doesn't seem to be a way to call a non-static and capturing function on program exit in kotlin/native.

is it true that not fully implementing a Kotlin interface in swift generates a compile time error, but not fully implementing an abstract base class only generates a runtime error when you try to call an unimplemented abstract function? is there a way to move that error into build time?

Are

x86

and `x86_64`Android targets not supported? I'm looking at the sample https://github.com/JetBrains/kotlin-native/blob/master/samples/androidNativeActivity/build.gradle here and only seeing

arm32

,

arm64

I’m seeing that printing a stack-trace (exception.printStackTrace()) on iOS blocks the main thread for up to 250ms (

GetStackTraceThings

), is it worth trying to create stand-alone reproducible example?

I am using ZMQ in my multiplatform project. It compiles fine on Linux, but on Windows it tries to compile for Linux as well and there are no path to zmq.h file and so files. Anz idea how to solve it? I see option 1, include zmq in my project to be present on Windows, option 2, not using build on Windows, but compile...Windows and link...Windows tasks. Or any better option is possible?