How is the status om running KMM on iOS simulator on M1 Mac

Question

How is the status om running KMM on iOS simulator on M1 Mac I create new project using latest version Can run on device but not on simulator `ld warning ignoring file Users xxxx project android yyyy shared build cocoapods framework shared framework shared building for iOS Simulator arm64 but attempting to link with file built for iOS Simulator x86 64` Undefined symbols for architecture arm64 OBJC CLASS $ SharedGreeting referenced from objc class ref in ContentView o ld symbol s not found for architecture arm64

Osman Saral · Answer

you just need to add arm64 to exculded architectures from build settings

Bill Mårtensson · Answer

That leads to other error where it can no longer find shared framework No such module shared

Bill Mårtensson · Answer

And ld framework not found Pods iosApp

Bill Mårtensson · Answer

Switching run target to device and it works

Bill Mårtensson · Answer

So no simulator and ni swiftui preview because build fail

borisdamato · Answer

If you re using the packForXCode task to generate the framework from KMM it could be that the default implementation is assuming that simulators can only be x86

borisdamato · Answer

I believe there s an env var that xCode sets with the architecture you could try using that An alternative could be to use a FatFramework universal or cocoapods which should take care of this automatically

Osman Saral · Answer

if you re using pod try pod install on ios directory

Stefan Oltmann · Answer

You can t run the iOS Simulator from Xcode on Apple M1 right now It s not possible Start it from the KMM plugin in Android Studio

Stefan Oltmann · Answer

Even fat frameworks or XCFramework will not help you since the arm64 Kotlin Native target will build for real devices only never for simulators This will be fixed with 1 5 30 AFAIK

Osman Saral · Answer

I m running iOS Simulator from Xcode on my Apple M1

Stefan Oltmann · Answer

How

Stefan Oltmann · Answer

How did you build arm64 for simulator

Osman Saral · Answer

I didn t do anything different than another ios project just added arm64 to excluded architectures screenshot is on the top

Stefan Oltmann · Answer

So you run the iOS Simulator for x64

Osman Saral · Answer

Well I m not really sure of it But when I run my project from Xcode It works

Bill Mårtensson · Answer

Made new project and used framework instead of cocoa pods Tried to run got original error Added the exclude architecture Now run simulator from xcode and swiftui preview works

Stefan Oltmann · Answer

Ok maybe I should try it again

Stefan Oltmann · Answer

Lol okay I tried exactly that several times and it did not work but now it does strange But I think I did not build a XCFramework fat framework by that time Not sure anymore Ok running x64 simulator on M1 in xcode is possible now

Stefan Oltmann · Answer

I m happy now grinning

Bill Mårtensson · Answer

There are so many moving parts with kotlin KMM iOS Xcode gradle Been using KMM for 2 years but still new things coming up still best way to build multiplatform app though

Stefan Oltmann · Answer

So nice to finally have a SwiftUI preview working

Osman Saral · Answer

great glad it helped grin