Add2App [Option A&B] with plugins failed to build because plugins was built without full bitcode

[nailgilaziev]

This is a next step of an issue described here #47930 and all preparation steps is the same.
But now before building .xcframework just add to my_flutter module some plugin dependencies.
I added most popular shared_preferences plugin to pubspec.yaml and added example code to main.dart file.
Next

flutter build ios-framework --output=../host_ios/embed/ --xcframework --no-universal

produce

App.framework
Flutter.xcframework
FlutterPluginRegistrant.xcframework
shared_preferences.xcframework

Applying them to xcode pbxproj -> build -> error

ld: bitcode bundle could not be generated because '/Users/n/Library/Developer/Xcode/DerivedData/host_ios-bnbwehcmdjzqgydxspnsnfifvdyh/Build/Intermediates.noindex/ArchiveIntermediates/host_ios/BuildProductsPath/Release-iphoneos/shared_preferences.framework/shared_preferences' was built without full bitcode. All frameworks and dylibs for bitcode must be generated from Xcode Archive or Install build file '/Users/n/Library/Developer/Xcode/DerivedData/host_ios-bnbwehcmdjzqgydxspnsnfifvdyh/Build/Intermediates.noindex/ArchiveIntermediates/host_ios/BuildProductsPath/Release-iphoneos/shared_preferences.framework/shared_preferences' for architecture arm64

I checked this situation with another plugin - path_provider - result the same.

If I try to disable bitcode I get another error:

with this logs:
IDEDistribution.critical.log
IDEDistribution.standard.log
IDEDistribution.verbose.log

[nailgilaziev]

This issue was on
Flutter (Channel master, v1.13.6-pre.48, on Mac OS X 10.15.2 19C57, locale en-RU)
upgraded ~ 3 hour ago, but after (when I writing this issue) new version released, so...

additionally I upgraded to currently latest:

Flutter 1.13.7-pre.8 • channel master • https://github.com/flutter/flutter.git
Framework • revision dc99d61e5d (2 hours ago) • 2020-01-02 13:03:01 -0800
Engine • revision fa05d367ad
Tools • Dart 2.8.0 (build 2.8.0-dev.0.0 b52d264f5b)

and repeat test:
Result the same - bitcode error
PS now building frameworks generate App.xcframework, not the App.framework as before.

[nailgilaziev]

You doesn’t apply severe label.
Any workaround exist for this problem? If yes - I will apply it for publishing my app to the TestFlight.

[jmagman]

I need to try this, I'm not sure what's going on and don't have a workaround at the moment.

[Magsumov2]

Hello! @jmagman , please tell me - When will it be fixed? I meet the same issue and I can not release application because of this error! thanks

[nailgilaziev]

@jmagman , I tried to add flutter module to app via Option A - cocoapods script, recommended way
But when archive this error occurs:

bitcode bundle could not be generated because '/Users/n/pubios/my_flutter/.ios/Flutter/engine/Flutter.framework/Flutter' was built without full bitcode. All frameworks and dylibs for bitcode must be generated from Xcode Archive or Install build file '/Users/n/pubios/my_flutter/.ios/Flutter/engine/Flutter.framework/Flutter' for architecture armv7

[nailgilaziev]

to make sure I'm doing everything right and to provide more information for you I do everything from scratch with latest flutter version:

[✓] Flutter (Channel master, v1.13.8-pre.58, on Mac OS X 10.15.2 19C57, locale en-RU)
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.3)
[✓] Android Studio (version 3.5)

I create new flutter module
flutter create --template module my_flutter
create new xcode project and then configure pod file and reopen .xcworkspace

with simplest flutter module(no pub dependencies) everything compiles and successfully uploads to AppStore.
But when I add dependency to flutter module and try to build and upload again I meet the error on archive:

bitcode bundle could not be generated because ... was built without full bitcode....

[jmagman]

Need integration tests that not just build the host app, but archive and validate it, too.

1. Found an unexpected Mach-O header code: 0x72613c21

2020-01-14 02:56:03 +0000  Failed to generate distribution items with error: Error Domain=DVTMachOErrorDomain Code=0 "Found an unexpected Mach-O header code: 0x72613c21" UserInfo={NSLocalizedDescription=Found an unexpected Mach-O header code: 0x72613c21, NSLocalizedRecoverySuggestion=}

Xcode project settings > Build Settings > Embed Frameworks and remove FlutterPluginRegistratant.framework (or xcframework). Keep it in Link Binary With Libraries.

This is a static framework, not a dynamic one...
I will update the docs. Hopefully this unblocks you.

2. Plugin framework was built without full bitcode.

ld: bitcode bundle could not be generated because '/Users/n/Library/Developer/Xcode/DerivedData/host_ios-bnbwehcmdjzqgydxspnsnfifvdyh/Build/Intermediates.noindex/ArchiveIntermediates/host_ios/BuildProductsPath/Release-iphoneos/shared_preferences.framework/shared_preferences' was built without full bitcode. All frameworks and dylibs for bitcode must be generated from Xcode Archive or Install build file '/Users/n/Library/Developer/Xcode/DerivedData/host_ios-bnbwehcmdjzqgydxspnsnfifvdyh/Build/Intermediates.noindex/ArchiveIntermediates/host_ios/BuildProductsPath/Release-iphoneos/shared_preferences.framework/shared_preferences' for architecture arm64

I believe this one is because the plugins are being built instead of archived, and so aren't being created with bitcode. I'm about to put out a pull request to fix this one.

3. Flutter was built without full bitcode

bitcode bundle could not be generated because '/Users/n/pubios/my_flutter/.ios/Flutter/engine/Flutter.framework/Flutter' was built without full bitcode. All frameworks and dylibs for bitcode must be generated from Xcode Archive or Install build file '/Users/n/pubios/my_flutter/.ios/Flutter/engine/Flutter.framework/Flutter' for architecture armv7

I believe this could happen if flutter build --debug was last run in the module and there's a debug version of Flutter at the vendored_framework path. The release version should be re-copied when the [CP-User] Run Flutter Build Script build phase runs in the host app, though. I need to look into this one more.
In the meantime, try running flutter build --release in your Flutter module, then re-try pod install from your host app.

[nailgilaziev]

@jmagman, Does you(or team) need any tests or clarifications from me?
This issue is blocking and no other ways to workaround it.
Adding flutter module with some pub dependencies to host app currently not working at all.
Does not work in either the stable or master channel. neither option A nor B
Please help.

[jmagman]

@nailgilaziev Did you try my suggestions above?

For option A (CocoaPods) try running flutter build ios --release in the Flutter module.

For option B (generating frameworks) disable bitcode in your host app, and remove FlutterPluginRegistratant.framework (or xcframework) from the Embed Frameworks build phase. It's a static framework and so should be linked on and not embedded. Depending on what plugins you have, you may also need to do the same for them. Run:

$ grep -riI "static_framework" .ios/Pods

to see which podspecs (CocoaPods metadata per plugin) should also be removed.