Build for iOS fails when Bitcode is enabled

[amplitude]

Build for iOS fails when Bitcode is enabled

[haoliu-amp]

@zjamshidi Thank you very much! I've put this into our documentation under FAQ section.

https://developers.amplitude.com/docs/flutter-setup#faq

[haoliu-amp]

Hey, so previously it doesn't happen to you?

[Zazo032]

No, only after migrating to new Podfile template

[haoliu-amp]

So you regenerate the Podfile for your project, right? What is your current Cocoapods and Flutter version? Knowing these will help me get it reproduced locally.

[Zazo032]

The Flutter version is in the first post, CocoaPods version is 1.9.3

[haoliu-amp]

I tried it locally, but can't get it reproduced.

However, the versions for each tools I am using are
cocoapods: 1.9.1
flutter: Flutter 1.18.0-11.0.pre

Would you like to try to switch same versions and give it a shot?

[Zazo032]

This is still happening in latest 1.20 stable, did you enable bitcode in order to trigger the error?

[haoliu-amp]

I did enable it. Would you mind sending me an example app so I can try it out on my end if possible?

[ThomasKliszowski]

I have the same problem.
If I remove the Podfile in order to make the new one, I get this bitcode issue.

$ pod --version
1.9.1

$ flutter --version
Flutter 1.20.2 • channel stable • https://github.com/flutter/flutter
Framework • revision bbfbf1770c (4 days ago) • 2020-08-13 08:33:09 -0700
Engine • revision 9d5b21729f
Tools • Dart 2.9.1

[marcuslma]

Same problem here,
I reverted flutter version to make it work.
The error started after migrating to new stable version 1.20.
I opened the issue #15

[zjamshidi]

I have the same problem. I wanted to reduce the app size, so I enabled the bitcode flag. Then the project failed to build:

    ld: '/Users/zahra/FlutterProjects/motiveex_fluttter/build/ios/Release-iphoneos/Amplitude/Amplitude.framework/Amplitude'
    does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated
    library from the vendor, or disable bitcode for this target. file
    '/Users/zahra/FlutterProjects/motiveex_fluttter/build/ios/Release-iphoneos/Amplitude/Amplitude.framework/Amplitude' for
    architecture arm64
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    ld: '/Users/zahra/FlutterProjects/motiveex_fluttter/build/ios/Release-iphoneos/Amplitude/Amplitude.framework/Amplitude'
    does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated
    library from the vendor, or disable bitcode for this target. file
    '/Users/zahra/FlutterProjects/motiveex_fluttter/build/ios/Release-iphoneos/Amplitude/Amplitude.framework/Amplitude' for
    architecture armv7
    clang: error: linker command failed with exit code 1 (use -v to see invocation)

[zjamshidi]

here is the output of flutter doctor:

[✓] Flutter (Channel stable, v1.17.0, on Mac OS X 10.15.5 19F101, locale en-LK)
[✓] Xcode - develop for iOS and macOS (Xcode 11.5)

I'm using amplitude_flutter: ^2.0.0 in my project

[zjamshidi]

I solved my issue. According to flutter documentation:

You should also remove config.build_settings['ENABLE_BITCODE'] = 'NO' from the Podfile

https://github.com/flutter/flutter/wiki/Creating-an-iOS-Bitcode-enabled-app

[Zazo032]

This will probably have to be updated too: https://github.com/amplitude/Amplitude-Flutter/search?q=ENABLE_BITCODE&unscoped_q=ENABLE_BITCODE

Example: https://github.com/flutter/flutter/pull/39851/files

[Zazo032]

As this plugin is now using the iOS pod natively, maybe bitcode should be enabled there?

ld: '/Users/cristianzazo/sample/build/ios/Release-iphoneos/Amplitude/Amplitude.framework/Amplitude' does not contain bitcode. You must rebuild it with bitcode enabled (Xcode setting ENABLE_BITCODE), obtain an updated library from the vendor, or disable bitcode for this target.
file '/Users/cristianzazo/sample/build/ios/Release-iphoneos/Amplitude/Amplitude.framework/Amplitude' for architecture arm64
clang: error: linker command failed with exit code 1