Unable to build for IOS

[jeancamilo]

Hi guys, i'm getting this error every time I try to build for IOS.

Can anyone help me how to solve? Right now, I'm using mobile_scanner 5.0.0-beta.3, because I know the mlkit was update in beta.3.

Flutter doctor

[✓] Flutter (Channel stable, 3.19.5, on macOS 14.4 23E214 darwin-arm64, locale pt-BR) • Flutter version 3.19.5 on channel stable • Upstream repository https://github.com/flutter/flutter.git • Framework revision 300451adae (3 weeks ago), 2024-03-27 21:54:07 -0500 • Engine revision e76c956498 • Dart version 3.3.3 • DevTools version 2.31.1

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0) • Android SDK at /Users/jeanlucasdecamillo/Library/Android/sdk • Platform android-34, build-tools 34.0.0 • ANDROID_HOME = /Users/jeanlucasdecamillo/Library/Android/sdk • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java • Java version OpenJDK Runtime Environment (build 17.0.9+0-17.0.9b1087.7-11185874) • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.3) • Xcode at /Applications/Xcode.app/Contents/Developer • Build 15E204a • CocoaPods version 1.15.2

[✓] Chrome - develop for the web • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2023.2) • Android Studio at /Applications/Android Studio.app/Contents • Flutter plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: 🔨 https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 17.0.9+0-17.0.9b1087.7-11185874)

[✓] VS Code (version 1.88.0) • VS Code at /Applications/Visual Studio Code.app/Contents • Flutter extension version 3.86.0

[✓] Connected device (3 available) • moto e5 (mobile) • ZL5223CQ7G • android-arm • Android 8.0.0 (API 26) • iPhone SE (3rd generation) (mobile) • A3A102CB-15D1-4CD3-9684-3CF309254045 • ios • com.apple.CoreSimulator.SimRuntime.iOS-17-4 (simulator) • Chrome (web) • chrome • web-javascript • Google Chrome 123.0.6312.124

[✓] Network resources • All expected network resources are available.

[navaronbracke]

The first warning seems unrelated.

However, the second warning indicates that you're unable to build for arm64. Since you have an ARM Mac, can you confirm that you are either testing on an ARM iOS Simulator or an ARM iOS device?

IIRC MLKit does support ARM and we also don't specify its exclusion in the podspec here https://github.com/juliansteenbakker/mobile_scanner/blob/master/ios/mobile_scanner.podspec

The Simulator is excluded, though, as specified on Cocoapods.org: https://github.com/CocoaPods/Specs/blob/master/Specs/b/5/4/MLKitBarcodeScanning/5.0.0/MLKitBarcodeScanning.podspec.json

Just to be sure, you specified building for the ARM64 architecture in your project settings?

[jeancamilo]

Thanks for your response @navaronbracke. I'm trying to embed my application to a native one. So, the time native code try to build using my SDK, it shows me this error and I can't build. I have these lines in my generated podspec: (maybe add "excluded archs arm64" works?)

s.ios.deployment_target = '12.0'
s.swift_version = '5.0'
s.static_framework = true
s.user_target_xcconfig = { 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
s.pod_target_xcconfig = { 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }

Build my Flutter application with mobile_scanner works well, but in this case, building my sdk in a native code, don't. I tried to build from an intel mac but I don't have success too.

[jeancamilo]

Update: I added those configs to my podspec:

  s.user_target_xcconfig = { 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386 arm64 armv7' }
  s.pod_target_xcconfig = { 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386 arm64 armv7' }

And the error changed a little, but it persists :(

[dgugolf]

I have related issue when try to use different flavors for flutter on iOS, it says Unsupported swift architecture. No idea haw to fix it. So with default scheme it works, but If I make a copy of default one it says error.

[parthpatel-simbiotik]

I am also facing the same issue in v5.1.1. I am using XCode 15.4. Using MacBook Pro (M1 Pro) Running on my iPhone 14 Pro Device

Please help how to fix this.

[wdcs-vivekmakvana]

Facing same issue... Any update on this.

[GerlanStanley]

I have related issue when try to use different flavors for flutter on iOS, it says Unsupported swift architecture. No idea haw to fix it. So with default scheme it works, but If I make a copy of default one it says error.

I had the same problem using flavors

[fulstadev]

I have related issue when try to use different flavors for flutter on iOS, it says Unsupported swift architecture. No idea haw to fix it. So with default scheme it works, but If I make a copy of default one it says error.

@juliansteenbakker I'm having the same exact problem, and also with the flutter_secure_storage package, also coming from steenbaker.dev.

I could unfortunately reproduce the problem over and over by following the official step-by-step guider for the setup of flutter ios flavors, tried to fix it, but I always get the exact same mentioned error; User-Defined Issue (Xcode): Unsupported Swift architecture, for the two mentioned packages.

I'm wondering if this may be a systematic error somewhere; or if not; do you know why this could happen?

[GerlanStanley]

I have related issue when try to use different flavors for flutter on iOS, it says Unsupported swift architecture. No idea haw to fix it. So with default scheme it works, but If I make a copy of default one it says error.

@juliansteenbakker I'm having the same exact problem, and also with the flutter_secure_storage package, also coming from steenbaker.dev.

I could unfortunately reproduce the problem over and over by following the official step-by-step guider for the setup of flutter ios flavors, tried to fix it, but I always get the exact same mentioned error; User-Defined Issue (Xcode): Unsupported Swift architecture, for the two mentioned packages.

I'm wondering if this may be a systematic error somewhere; or if not; do you know why this could happen?

For me what solved it was adding these lines to the Podfile:

post_install do |installer|
      # ADD THIS
      installer.pods_project.build_configurations.each do |config|
          config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"
      end
      ...

[navaronbracke]

@GerlanStanley That workaround seems to align with the fact that arm64 is not supported, I wonder if we can make it supported (as on M1 Macs the simulators would be arm64)

[fulstadev]

But don't all of the current iOS devices use the arm64 architecture, isn't that rather modern and excluding it could be risky? Or am I completely wrong here?

[navaronbracke]

This is talking about arm64 iOS Simulators, not real devices. Presumably this is an issue that occurs only when developing on M1 Macs.

[fulstadev]

Okay I was worried that these things may not be explicitly separated from each other, as e.g. configuring the architecture for android releases in your gradle configs does not make that differentiation AFAIK. But FYI, I'm having the issue too and I'm developing on an M2 Mac, MacOS Sonoma 14.5, with the latest version of XCode (15.4) the latest stable release of Flutter, with an output of flutter doctor showing that everything's fine.

[fulstadev]

installer.pods_project.build_configurations.each do |config| config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64" end

just FYI, this did not work for me. I instead had to add it explicitly to the build settings of every target, using the following in my Podfile, then it worked:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)

    target.build_configurations.each do |config|

          config.build_settings["EXCLUDED_ARCHS[sdk=iphonesimulator*]"] = "arm64"

        end
  end
end

[navaronbracke]

Since this is specifically for arm64 iOS Simulators (I don't know if the reports of this bug also happen with Intel Macs), I think what we can do is check if we are running on the iOS Simulator, and do:

1. A conditional import of MLKit
2. An early return with an "unsupported" mobile scanner error, since Simulators do not have a camera anyway

[GeceGibi]

Any changes ?

[navaronbracke]

We updated MLKit to version 7.0.0 in mobile_scanner 6.0.0. If that upgrade didn't help, then I do not have any updates.

[atnpem]

same issue encountered with mobile_scanner: ^6.0.1

User-Defined Issue (Xcode): Unsupported Swift architecture

Had to modify podfile to exclude ARM64 as explain there https://github.com/juliansteenbakker/mobile_scanner/issues/1018#issuecomment-2268413760

[navaronbracke]

It seems that this issue is listed in the MLKit "Known Issues", which I previously missed.

https://developers.google.com/ml-kit/known-issues#ios_issues

Simulators on M1-based Mac are not supported.

I'll add the arm64 simulator to our excluded archs as well, which should fix this issue. I'll also add a documentation update for this.

[navaronbracke]

This should be fixed in version 6.0.2

[navaronbracke]

For anyone wanting to follow along with adding back support for arm64 Simulators, see #1225

[vietanhdtd]

I upgrade to version 6.0.2 and still can not run in simulator. Real device start normally.

mobile_scanner: ^6.0.2

Issue:

User-Defined Issue (Xcode): Unsupported Swift architecture

Apple silicon M2 Flutter version 3.27.1 Dart version 3.6.0 CocoaPods version 1.15.2 Xcode 15.4

Has anyone try 6.0.2 version and still happen error?

[navaronbracke]

Version 6.0.2 does not support arm64 iOS Simulators, as that version still uses MLKit for iOS.

You should switch to one of the version 7.0.0 betas, which restore support for the arm64 simulator.