Hi all, I am currently trying to build a small project for arm64. I wanted to ask if it is possible to create a custom target. I mean something different than using:

kotlin{
 linuxArm64()
}

I am interested in creating a custom target for arm64 where I can specify what compiler/linker options I want to use. Thanks in advance!

Anyone know if there have been any intentionally breaking changes in "Kotlin Native Cocoapods" or objc cinterop integration lately? Am trying to upgrade from kotlin 1.3.50 to 1.3.61, and it's failing on a pod that was previously working.

-kotlin_version=1.3.50
-kotlin_coroutines_version=1.3.0
-kotlin_serialization_version=0.12.0
+kotlin_version=1.3.61
+kotlin_coroutines_version=1.3.3
+kotlin_serialization_version=0.14.0

I'm getting this error:

> Task :Common:generateDefFlutter UP-TO-DATE
> Task :Common:cinteropFlutterIOS
> Task :Common:generateDefReactiveObjC
> Task :Common:cinteropReactiveObjCIOS FAILED
Exception in thread "Thread-3" java.lang.AssertionError: Assertion failed
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexImpl.convertFunctionType(Indexer.kt:654)
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexImpl.convertBlockPointerType(Indexer.kt:691)
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexImpl.convertType(Indexer.kt:610)
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexImpl.convertType$default(Indexer.kt:507)
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexImpl.getTypedef(Indexer.kt:420)
	at org.jetbrains.kotlin.native.interop.indexer.NativeIndexImpl.indexDeclaration(Indexer.kt:772)
	at org.jetbrains.kotlin.native.interop.indexer.IndexerKt$indexDeclarations$$inlined$withIndex$lambda$1.indexDeclaration(Indexer.kt:985)
	at org.jetbrains.kotlin.native.interop.indexer.UtilsKt$indexTranslationUnit$1$indexerCallbacks$1$4.invoke(Utils.kt:428)
	at org.jetbrains.kotlin.native.interop.indexer.UtilsKt$indexTranslationUnit$1$indexerCallbacks$1$4.invoke(Utils.kt)
	at kotlinx.cinterop.JvmCallbacksKt$createStaticCFunctionImpl$$inlined$ffiClosureImpl$3.invoke(JvmCallbacks.kt:489)
	at kotlinx.cinterop.JvmCallbacksKt$createStaticCFunctionImpl$$inlined$ffiClosureImpl$3.invoke(JvmCallbacks.kt)
	at kotlinx.cinterop.JvmCallbacksKt.ffiFunImpl(JvmCallbacks.kt:448)
	at kotlinx.cinterop.JvmCallbacksKt.ffiFunImpl0(JvmCallbacks.kt:435)

FAILURE: Build failed with an exception.

I'm using two Pods defined in my

cocoapods

-block:

cocoapods {
            pod('Flutter', library_version)
            pod('ReactiveObjC', "~> $reactive_objc_version")
        }

(reactive_objc_version is 3.1)

"Native Debugging Support" does not work for me, on Windows10 / IDEA2020.1 / 1.3.70EAP2

noob question, if I were to build a CI to check if ios integration works, I'd need for it to be a mac, right?

Global

val

properties with

@SharedImmutable

work as expected, but if you use a

var

, the

@SharedImmutable

doesn’t apply. Logically that makes sense, but it seems like that may be confusing in situations where people try it. I think it would be better to have it frozen, or maybe a compiler failure, but right now it seems like the annotation is simply ignored. Thoughts?

Hello there, I have an Android/iOS library project, its main build script is attached. It builds without a problem, then I run

:podspec

and then I plug it to Podfile like this:

# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

target 'AnalyticsDemo' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  # Pods for AnalyticsDemo
  pod "analytics", :path => "../analytics-root/analytics"

end

When I try to run it in Xcode, it successfully runs several Gradle tasks and then it fails with

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -target x86_64-apple-ios13.2-simulator -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator13.2.sdk -L/Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Products/Debug-iphonesimulator -L/ -L/Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Products/Debug-iphonesimulator/Analytics -F/Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Products/Debug-iphonesimulator -FPods -FPods/Headers -FPods/Local\ Podspecs -FPods/Target\ Support\ Files -FPods/Target\ Support\ Files/Pods-AnalyticsDemo -FPods/Target\ Support\ Files/analytics -filelist /Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Intermediates.noindex/AnalyticsDemo.build/Debug-iphonesimulator/AnalyticsDemo.build/Objects-normal/x86_64/AnalyticsDemo.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -dead_strip -Xlinker -object_path_lto -Xlinker /Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Intermediates.noindex/AnalyticsDemo.build/Debug-iphonesimulator/AnalyticsDemo.build/Objects-normal/x86_64/AnalyticsDemo_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Intermediates.noindex/AnalyticsDemo.build/Debug-iphonesimulator/AnalyticsDemo.build/Objects-normal/x86_64/AnalyticsDemo.swiftmodule -ObjC -lc++ -framework analytics -Xlinker -sectcreate -Xlinker __TEXT -Xlinker __entitlements -Xlinker /Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Intermediates.noindex/AnalyticsDemo.build/Debug-iphonesimulator/AnalyticsDemo.build/AnalyticsDemo.app-Simulated.xcent -framework Pods_AnalyticsDemo -Xlinker -dependency_info -Xlinker /Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Intermediates.noindex/AnalyticsDemo.build/Debug-iphonesimulator/AnalyticsDemo.build/Objects-normal/x86_64/AnalyticsDemo_dependency_info.dat -o /Users/xlebnick/Library/Developer/Xcode/DerivedData/AnalyticsDemo-cvvffnvreniysughwjnehpslgvqy/Build/Products/Debug-iphonesimulator/AnalyticsDemo.app/AnalyticsDemo

ld: framework not found analytics
clang: error: linker command failed with exit code 1 (use -v to see invocation)

My multiplatform module has name

analytics

. Why doesn't Xcode see my framework?

Are there any plans to include documentation on testing Kotlin Native libraries/programs? With Kotlin Native libraries/programs targeting linuxX64 for instance there is no documentation available that covers the following: 1. How to setup testing at the build level (via Gradle) 2. What types of testing are supported by Kotlin Native 3. Which testing libraries/frameworks are available that provide Kotlin Native support 4. Key issues/pitfalls to be aware of when testing a Kotlin Native library/program 5. Basic testing examples covering a Kotlin Native library/program 6. How to test concurrency (covering Workers/Coroutines) in a Kotlin Native library/program

Hi all, does anybody know when the

-Xoverride-clang-options

option is going to be available? I am trying to compile for a custom arm64 target. My

build.gradle.kts

contains the following section:

linuxArm64("arm64"){            
 binaries {
  executable {
   entryPoint = <entry_point>
   freeCompilerArgs += listOf("-Xoverride-clang-options=-target-cpu=cortex-a53")
  }
 }
}

and it produces the following warning:

w: Flag is not supported by this version of the compiler: -Xoverride-clang-options=-target-cpu=cortex-a53

. Did anybody succeed in compiling for a custom target? Thanks in advance!

Generated a new project from template > Kotlin > Native | Gradle. Compile and run fine. Then I add a coroutines runBlocking line to the generated sample app:

package sample

import kotlinx.coroutines.runBlocking

fun hello(): String = "Hello, Kotlin/Native!"

fun main() {
    runBlocking {
        println(hello())
    }
}

The error is “unresolved references” to coroutines and runBlocking. Heres the build.gradle file, which just adds the coroutine dependencies. What did I do wrong?

plugins {
    id 'org.jetbrains.kotlin.multiplatform' version '1.3.61'
}
repositories {
    mavenCentral()
}

kotlin {
    macosX64("macos") {
        binaries {
            executable {
               entryPoint = 'sample.main'
                runTask?.args('')
            }
        }
    }
    sourceSets {
        macosMain {
            dependencies {
                implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.3'
            }
        }
        macosTest {
        }
    }
}

Hello, I have yet another question about cocoapods in K/N ☑️ I'm using

cocoapods

plugin, specify cocoapods dependency and run

:analytics:podspec

(where

analytics

is my KMP module) ☑️ podspec is generated and I'm using the project from Podfile ☑️

import analytics

works in Xcode ☑️ iOS project with the aforementioned Podfile builds successfully ❌

import cocoapods.Analytics

is highlighted in red in Intellij Idea and causes compile errors such as

Packages cannot be imported

How do I make the frameworks appear in Kotlin project? Many thanks in advance Configuration files are attached to the thread

Hello! I’m trying to create a Redis module in Kotlin/Native. The module will provide a stack data type:

class Node(prev: Node?, value: Char)
class Stack(tail: Node?)

Redis provides a specific API for memory allocation:

void *RedisModule_Alloc(size_t bytes)

. They say it should be preferred over

malloc

because “memory allocated with this function is reported in Redis INFO memory, used for keys eviction according to maxmemory settings and in general is taken into account as memory allocated by Redis”. So, I want to use this API to allocate memory for my nodes. My plan was to reinterpret that pointers to my types later. The problem is that I cannot find a way to know the size needed by my claasses, like

sizeOf<Node>

. How do I know it?

Does Kotlin Native support Gradle 6.0 ( https://blog.jetbrains.com/kotlin/2020/02/improved-gradle-kts-ide-support/ )?

is there a way to take

current time in millis

?

also need example how to

schedule worker

that run continuously with fixed rate time (millis) before repeat

Is there any plan to support iOS Combine framework?

Could not resolve org.jetbrains.kotlinx:kotlinx-coroutines-core-native:1.3.3

in Kotlin MPP project, what should i do? Kotlin 1.3.61 Gradle: 6.1.1 Kotlin DSL script

Could someone please explain me the difference between CPointer and CPointerVar? I have been struggling to understand the difference, but haven't been able to make any headway

How can I know if a .framework is compiled for iosArm64 or iosX64?

Anyone here use

ktor-client-curl

in their project? I’m running into linker issues, and would like to compare notes / build scripts. (Keeping it short since I posted a long description in the #ktor channel, with no answers for now.)

Hi, I have a

wchar_t *

in C that I try to convert to a kotlin string with kotlin native. I've used

.toKStringFromUtf32()

which works well but it seems that the string has a trailing null byte which is not so pretty 🙂 Is that expected behavior? The documentation states

Returns: the [kotlin.String] decoded from given zero-terminated UTF-32-encoded C string.

so my interpretation would be that this is a bug?

Someone knows why such an error would occur when using Kotlin code natively compiled for iOS? Instances of kotlin.Error, kotlin.RuntimeException and subclasses aren't propagated from Kotlin to Objective-C/Swift. Other exceptions can be propagated as NSError if method has or inherits @Throws annotation. Uncaught Kotlin exception: kotlin.native.IncorrectDereferenceException: illegal attempt to access non-shared com.company.projectname.package.SomeDataClass@c808c7b8 from other thread

Hey all, I'm seeing some weird behaviour when I'm trying to start an iOS application which uses a framework which is compiled using our kotlin native project. The project uses a couple of cinterops on some objectve-c frameworks:

AppCenter

,

AppCenterCrashes

,

AppCenterAnalytics

, `KeychainWrapper`; And this seems to work well at this point. However when I try to run the iOS application after interopting this framework: https://github.com/CAAPIM/iOS-MAS-Foundation (which works after modifying the imports in the header files slightly

@import SomeFramework;

->

#import <SomeFramework/SomeFramework.h>

,

#import <MASFoundation/SomeHeader.h>

->

#import "SomeHeader.h

), I get the following error when trying to boot up the application:

dyld: Library not loaded: /Library/Frameworks/MASFoundation.framework/MASFoundation

Referenced from: /Users/sandersaelmans/Library/Developer/Xcode/DerivedData/iosApp-dbelcoqoqidymygwatjnbtxoifby/Build/Products/Debug-iphonesimulator/app.framework/app

Reason: image not found

The

.def

file I'm using looks like this:

language = Objective-C
package = com.mas
headers = MASFoundation.h

compilerOpts = \
    -Isrc/nativeInterop/cinterop/MASFoundation.framework/Headers \

linkerOpts = \
    -Fsrc/nativeInterop/cinterop \
    -framework MASFoundation \
    -framework Foundation \
    -framework UIKit

Can someone spot what I'm doing wrong here? As my other interops work perfectly...

Hey guys, I'm trying to turn this method into K/N, but my cast always fails:

func isVPNConnected() -> Bool {
    let cfDict = CFNetworkCopySystemProxySettings()
    let nsDict = cfDict!.takeRetainedValue() as NSDictionary
    let keys = nsDict["__SCOPED__"] as! NSDictionary

    for key: String in keys.allKeys as! [String] {
        if (key == "tap" || key == "tun" || key == "ppp" || key == "ipsec" || key == "ipsec0") {
            return true
        }
    }
    return false
}

Kotlin:

fun isVPNConnected(): Boolean {
    val cfDict = CFNetworkCopySystemProxySettings()
    val nsDifct = cfDict as? NSDictionary //It fails here
    val keys = nsDifct?.valueForKey("__SCOPED__") as NSDictionary?

    return keys?.allKeys?.any { key ->
        key == "tap" || key == "tun" || key == "ppp" || key == "ipsec" || key == "ipsec0" || key == "utun1"
    } ?: false
}

Could anybody help me to understand how

takeRetainedValue

should be mapped into kotlin?

s there a way to use like in Android I'm using log.d("TAG", "message") with NSLog? like specifying the type? Debug, error, information, etc?

Hello, I have a question. Are there any memory leaks in the following code? This view controller is created and used from Swift.

fun myViewController(): UIViewController = MyViewControllerImpl()

private class MyViewControllerImpl : UIViewController(nibName = null, bundle = null) {
    private val button = UIButton()
    
    override fun viewDidLoad() {
        super.viewDidLoad()

        button.addTarget(target = this, action = sel_registerName("onClick"), forControlEvents = UIControlEventTouchUpInside)
        view.addSubview(button)
    }
    
    @ObjCAction
    private fun onClick() {
    }
}

Hi, I'm hitting extremely long compile times with kotlin native's compileKotlinJvm task. It takes around 10 minutes to build every time I modify something (I am using a very fast machine). I tried running a profiled build and think incremental build is broken for some reason. Has anyone hit similar issues? https://github.com/JetBrains/kotlin-native/issues/3933

Hi guys, I came across an unexpected (different that

kotlin

) behavior when running the following example:

object Test {

    private var test: String? = null

    fun changeVar() {
        test = "test"
        println("val changed")
    }
}

fun main(args: Array<String>) {
    Test.changeVar()
}

This works in

Kotlin

but in

kotlin-native

it throws the following exception:

Uncaught Kotlin exception: kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen test.Test@e1d7d8
        at kfun:kotlin.Throwable.<init>(kotlin.String?)kotlin.Throwable (0x22fc57)
        at kfun:kotlin.Exception.<init>(kotlin.String?)kotlin.Exception (0x22a7b5)
        at kfun:kotlin.RuntimeException.<init>(kotlin.String?)kotlin.RuntimeException (0x22a535)
        at kfun:kotlin.native.concurrent.InvalidMutabilityException.<init>(kotlin.String)kotlin.native.concurrent.InvalidMutabilityException (0x232ee5)
        at ThrowInvalidMutabilityException (0x233263)
        at MutationCheck (0x26367e)
        at kfun:cairo.Test.<set-test>#internal (0x242b50)
        at kfun:cairo.Test.changeVar() (0x242bbe)
        at kfun:cairo.main(kotlin.Array<kotlin.String>) (0x242c67)
        at Konan_start (0x242d6b)
        at Init_and_run_start (0x245f7b)
        at __libc_start_main (0x7fb745f461e3)
        at  (0x217029)
        at  ((nil))

If the

object Test

is changed to

class Test

:

class Test {

    private var test: String? = null

    fun changeVar() {
        test = "test"
        println("val changed")
    }
}

fun main(args: Array<String>) {
    Test().changeVar()
}

then it works as expected. Did somebody encounter this behavior? Is this intended? Is yes, can somebody please explain why? Thanks in advance!

Hi guys, can I use a library built in C++ with Kotlin Native? If not, what is the technical problems that make this not possible?

Some ballpark figures on compilation times with Kotlin 1.3.70 on a Kotlin Native project ( https://gitlab.com/napperley/ncurses-hello ) targeting linuxX64, which uses a statically linked C library (ncurses): • Fresh Compile (from a clean build): 21s 648ms (around 10s faster than Kotlin 1.3.61) • Compile From Incremental Change (of one line): 5s 750ms (around 25s faster than Kotlin 1.3.61) Compilation was done on a laptop (ThinkPad T480) that uses a Intel i5-8250U 8th Gen (Kaby Lake) CPU (4 cores, 8 hyper threads), and a Samsung 860 Evo SSD.