flutter build ios fail

[frederickcook]

Steps to Reproduce

We've been working on an app for several months and are finally ready to start beta testing but I'm having an issue building. Can anyone help grep through the log below and see if there is a clue as to what the issue is?

Running flutter build ios fails. Notably, the app works fine in the iOS simulator when running flutter run and the flutter example apps build successfully using flutter build ios.

Logs

To long to copy/paste - see text file: https://firebasestorage.googleapis.com/v0/b/bullwheel-6c673.appspot.com/o/Terminal%20Saved%20Output.txt?alt=media&token=e5792633-976a-44d9-ac7f-aeede7f8e4c8

Flutter Doctor

Frederick-Cook-Air% flutter doctor
[✓] Flutter (on Mac OS X 10.12.6 16G29, locale en-US, channel master)
    • Flutter at /Users/frederickcook/flutter
    • Framework revision 28366002d9 (16 hours ago), 2017-10-25 08:25:44 +0200
    • Engine revision 91071f817b
    • Tools Dart version 1.25.0-dev.11.0

[✓] Android toolchain - develop for Android devices (Android SDK 26.0.0)
    • Android SDK at /Users/frederickcook/Library/Android/sdk
    • Platform android-26, build-tools 26.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] iOS toolchain - develop for iOS devices (Xcode 9.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.0.1, Build version 9A1004
    • ios-deploy 1.9.2
    • CocoaPods version 1.2.1

[✓] Android Studio (version 2.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Java version OpenJDK Runtime Environment (build 1.8.0_112-release-b06)

[✓] IntelliJ IDEA Community Edition (version 2017.2.5)
    • Flutter plugin version 18.1
    • Dart plugin version 172.4343.25

[✓] Connected devices
    • Frederick Cook’s iPhone • c181836da6febb49dcdbea495dea15b137def3cd • ios • iOS 11.0.3
    • iPhone 7                • 2AE532E3-5B4B-4D8D-8CFB-F54C3BF6F8EE     • ios • iOS 11.0 (simulator)

[eseidelGoogle]

    Non-fat binary /Users/frederickcook/GondolaProjects/Eng/tram/build/ios/Release-iphoneos/Runner.app/Frameworks/App.framework/App is not arm64. Running lipo -info:
    Non-fat file: /Users/frederickcook/GondolaProjects/Eng/tram/build/ios/Release-iphoneos/Runner.app/Frameworks/App.framework/App is architecture: x86_64

is the error. @cbracken is likely the right person to ask.

[eseidelGoogle]

It looks like it's trying to use a Simulator binary when building for the device?

[cbracken]

Actually it looks like this might be the error:

fatal error: file '/Users/frederickcook/GondolaProjects/Eng/tram/ios/Runner/GeneratedPluginRegistrant.h' has been modified since the precompiled header '/Users/frederickcook/Library/Developer/Xcode/DerivedData/Runner-gdzryurgzchazzddeyhdklwmefdq/Build/Intermediates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_1GO0DJD77PCOX-clang_1LXNL3WT1L6XP.pch' was built
note: please rebuild precompiled header '/Users/frederickcook/Library/Developer/Xcode/DerivedData/Runner-gdzryurgzchazzddeyhdklwmefdq/Build/Intermediates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_1GO0DJD77PCOX-clang_1LXNL3WT1L6XP.pch'

I wonder if the build is failing, then we're continuing on with the lipo step as though it hadn't and lipo-ing the previous build. I'll try to repro such a failure locally.

@frederickcook as a workaround, could you try a flutter build clean then retry the build and see if that makes a difference?

If flutter build clean doesn't work, you might need to clean Xcode's DerivedData directory:

rm -rf /Users/frederickcook/Library/Developer/Xcode/DerivedData/Runner-gdzryurgzchazzddeyhdklwmefdq

[frederickcook]

Thanks for the fast response.

@cbracken Assuming you mean flutter clean. Same result and that same error shows up.

fatal error: file '/Users/frederickcook/GondolaProjects/Eng/tram/ios/Runner/GeneratedPluginRegistrant.h' has been modified since the precompiled header '/Users/frederickcook/Library/Developer/Xcode/DerivedData/Runner-gdzryurgzchazzddeyhdklwmefdq/Build/Intermediates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_1GO0DJD77PCOX-clang_1LXNL3WT1L6XP.pch' was built
    note: please rebuild precompiled header '/Users/frederickcook/Library/Developer/Xcode/DerivedData/Runner-gdzryurgzchazzddeyhdklwmefdq/Build/Intermediates.noindex/PrecompiledHeaders/Runner-Bridging-Header-swift_1GO0DJD77PCOX-clang_1LXNL3WT1L6XP.pch'

[cbracken]

Ah yep flutter clean is the right way to do it as of #12616. Sorry about that!

Can you try blowing away the derived data directory as described above and see if that makes a difference?

[frederickcook]

@cbracken still failing, but I don't see that fatal error anymore. New log output: https://firebasestorage.googleapis.com/v0/b/bullwheel-6c673.appspot.com/o/Terminal%20Saved%20Output2.txt?alt=media&token=ade28dcd-cbcd-4ca1-95bc-c86b7ab8ae17

[cbracken]

One more warning I see in the output:

ld: warning: ignoring file /Users/frederickcook/GondolaProjects/Eng/tram/ios/Flutter/App.framework/App, file was built for x86_64 which is not the architecture being linked (arm64): /Users/frederickcook/GondolaProjects/Eng/tram/ios/Flutter/App.framework/App

From your project directory, can you also try this:

flutter clean
rm -rf ios/Flutter/App.framework ios/Flutter/Flutter.framework

Looks like two issues at least:

1. flutter clean isn't quite cleaning everything it should be
2. In certain cases, we're not rebuilding the app as a framework and the old, stale one is sticking around.

[frederickcook]

@cbracken cleaned & removed the flutter.framework file. Different errors: https://firebasestorage.googleapis.com/v0/b/bullwheel-6c673.appspot.com/o/Terminal%20Saved%20Output3.txt?alt=media&token=43feb2dd-8982-4769-a0ba-bc243fdf85c0

[cbracken]

Hrm, this looks like we're back to the precompiled header error.

One last time, so we've got as clean as build as we can (hopefully), can you give this a go and dump the log:

flutter clean
rm -rf ios/Flutter/App.framework ios/Flutter/Flutter.framework
rm -rf /Users/frederickcook/Library/Developer/Xcode/DerivedData/Runner-gdzryurgzchazzddeyhdklwmefdq
flutter build ios

[frederickcook]

@cbracken did the above. Output: https://firebasestorage.googleapis.com/v0/b/bullwheel-6c673.appspot.com/o/Terminal%20Saved%20Output4.txt?alt=media&token=0aa87b0d-0b20-4193-b6bd-b41af42b9583

[cbracken]

Still poking through the build log. Based on the logs, it looks like ios/Flutter/App.framework isn't building, but all the work up to there looks good. I'm assuming that a quick ls ios/Flutter doesn't show App.framework, though I'd expect Flutter.framework is there?

If App.framework is there, does further followup run of flutter build ios still fail?

A few questions to make sure I've got all my ducks in a row to repro this:

1. It looks like there's at least one CocoaPods dependency. These appear to be working alright.
2. It also looks like the AppDelegate is a Swift AppDelegate as opposed to Obj-C, is that correct?
3. Had building a release build for physical devices been working (with the Swift AppDelegate) previously?
4. Are there any manual project build setting changes applied that might matter?

I haven't been able to get a similar failure locally, but I hadn't spotted the Swift AppDelegate until this last log. Not sure that it's related, but it's a definite difference from the project I'd been attempting to reproduce this with.

[frederickcook]

@cbracken thanks a ton for the help here.

Correct re: App.framework:

Frederick-Cook-Air% ls ios/Flutter 
AppFrameworkInfo.plist	Generated.xcconfig	app.flx
Debug.xcconfig		Release.xcconfig

1. Yes, I am loading 2 libs from the facebook sdk. Here is my ios/Podfile if that is helpful:

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

if ENV['FLUTTER_FRAMEWORK_DIR'] == nil
  abort('Please set FLUTTER_FRAMEWORK_DIR to the directory containing Flutter.framework')
end

def fbPods
    pod 'FBSDKCoreKit'
    pod 'FBSDKLoginKit'
end

target 'Runner' do
  # Pods for Runner
  fbPods

  # Flutter Pods
  pod 'Flutter', :path => ENV['FLUTTER_FRAMEWORK_DIR']

  if File.exists? '../.flutter-plugins'
    flutter_root = File.expand_path('..')
    File.foreach('../.flutter-plugins') { |line|
      plugin = line.split(pattern='=')
      if plugin.length == 2
        name = plugin[0].strip()
        path = plugin[1].strip()
        resolved_path = File.expand_path("#{path}/ios", flutter_root)
        pod name, :path => resolved_path
      else
        puts "Invalid plugin specification: #{line}"
      end
    }
  end
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

2. Correct - Swift AppDelegate, though we have added a FlutterMethodChannel to it to handle some of the fb work:

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
    
    override func application(
        _ app: UIApplication,
        open url: URL,
        sourceApplication: String?,
        annotation: Any
        ) -> Bool {
        return FBSDKApplicationDelegate
            .sharedInstance()
            .application(app,
                         open: url,
                         sourceApplication: sourceApplication,
                         annotation: annotation
        )
    }
    
    @available(iOS 9.0, *)
    override func application(
        _ app: UIApplication,
        open url: URL,
        options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {

        if (url.scheme!.isEqual("fb340494229725198")) {
            // Facebook
            return FBSDKApplicationDelegate
                .sharedInstance()
                .application(app,
                             open: url as URL!,
                             sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String!,
                             annotation: options[UIApplicationOpenURLOptionsKey.annotation]
            )
        }
        return false
    }
    
    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?
        ) -> Bool {
        GeneratedPluginRegistrant.register(with: self)
        
        FBSDKApplicationDelegate
            .sharedInstance()
            .application(application, didFinishLaunchingWithOptions: launchOptions)
        
        let controller: FlutterViewController! = (window.rootViewController as? FlutterViewController)
        let facebookChannel = FlutterMethodChannel(name: "com.tram.gondola.ios/facebook", binaryMessenger: controller)
        
        facebookChannel.setMethodCallHandler({
            (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
            // check which function was called
            if ("doFacebookLogin" == call.method) {
                let login = FBSDKLoginManager()
                login.logIn(withReadPermissions: ["public_profile", "email", "user_location", "user_education_history"], from: controller, handler: {(fbResult, error) -> Void in
                    if error != nil {
                        print("Process error")
                        result("Process error")
                    }
                    else if fbResult!.isCancelled {
                        print("Cancelled")
                        result("Cancelled motherfucker")
                    }
                    else {
                        //[facebookChannel invokeMethod:@"loginSuccessful"];
                        print("Logged in")
                        let token: String = fbResult!.token.tokenString
                        print(token)
                        result(token)
                    }
                })
            }
            else if ("checkFacebookLogin" == call.method) {
                if FBSDKAccessToken.current() != nil {
                    let token: String = FBSDKAccessToken.current()!.tokenString
                    print("Logged in")
                    print(token)
                    result(token)
                }
                else {
                    print("not logged in")
                    result(nil)
                }
            }
            else if ("doFacebookSignOut" == call.method) {
                if FBSDKAccessToken.current() != nil {
                    FBSDKLoginManager().logOut();
                }
                result("Logged out");
            }
            else {
                result(FlutterMethodNotImplemented)
            }
        })
        
        return super.application(application, didFinishLaunchingWithOptions: launchOptions);
    }
    
}

3. Yes, but not for some time. I can start reverting things and trying the ios build if that is the necessary next step.
4. Not that I can think of as being relevant.

[cbracken]

Thanks for the detailed reply. I'll see if I can make some progress on repro-ing this.