This is the error I get when I try to build my Flutter app with Xcode 12.5.1. I can run the app on the Simulator without any problem, my friend with an Intel MacBook Pro can build it but I can't with my M1 processor.
After trying many things on my main project, I've decided to build an empty project in order to know where the problem was. And I still have the same error when I try to build a just created project.
I have noticed this line in the build target runner logs : export arch\=undefined_arch
Of course I have followed several topics about excluded architectures without success.
I once saw a topic that told to change the Build System to Legacy in the Workspace Settings. After doing that, I have an other error I can't resolve :
Command /bin/sh failed with exit code 1, but the export arch is now set to armv7.
I absolutely don't know why I can't build even a new Flutter project on my M1 Mac. Is it a problem with this undefined architecture ?
Here is more information about my configuration :
Flutter doctor
New Build System logs
Legacy Build System logs
I had the same error, you need to reinstall flutter on your device. Just remove the sdk folder or if you want to clean correctly you need to do that in you Flutter install directory :
git clean -xfd
git stash save --keep-index
git stash drop
git pull
flutter doctor
After opening a simulator, when I run:
flutter create first_app
on my Dev folder directory in my User account, and then I run:
cd first_app
flutter run
I am given an error message saying that there is no lib/main.dart directory, which is true; flutter didn't create a main file/method for me.
This consequently makes it impossible to run the app. I am only starting out with Flutter, so I have yet to learn how to create a main method etc...
My visualstudio code has already installed the Flutter Plugins.
My Flutter Project won't run on the ios simulator and is throwing this error:
Launching lib/main.dart on iPhone Xʀ in debug mode...
Running Xcode build...
Xcode build done. 7.6s
Failed to build iOS app
Error output from Xcode build:
↳
** BUILD FAILED **
Xcode's output:
↳
=== BUILD TARGET Runner OF PROJECT Runner WITH CONFIGURATION Debug ===
/bin/sh: /Users/pinercode/AndroidStudioProjects/bmi-calculator-flutter/packages/flutter_tools/bin/xcode_backend.sh: No such file or directory
Could not build the application for the simulator.
Error launching application on iPhone Xʀ.
The xcode error was also as follows:
/bin/sh: /Users/pinercode/AndroidStudioProjects/bmi-calculator-flutter/packages/flutter_tools/bin/xcode_backend.sh: No such file or directory
I've already tried running flutter doctor and there were no errors.
I also tried re-rooting my xcode 'FLUTTER_ROOT' and 'FLUTTER_APPLICATION_PATH' in build settings, which did not work.
after a lot of messing around, I set these two settings and the build ran on to my physical device.
Goto Xcode,
click on Runner
select Project (top one)
go to Info tab
change configurations for debug
top Runner (green icon) to Generated
Bottom Runner (red circles) Pods-Runner-debug
Basically what happens is that one of the project's 'Build Phases' is running a script:
/bin/sh "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
Now in order to find xcode_backend.sh the FLUTTER_ROOT variable needs to be defined. It is defined in a file called Flutter/Generated.xcconfig, which is generated when you run flutter pub get or flutter build.
The build configuration files Debug.xcconfig and Release.xcconfig (in the same Flutter folder) include Generated.xcconfig.
Now the only thing left is to ensure that for each of the project configurations these build configuration files are properly set (in XCode under Project > Info > Configuration).
use this settings:
Open Xcode - Click on Runner(Top one)
Select the Runner from "PROJECT" Not from "TARGETS"
Select configuration
And update all the modes as this photo
Open Xcode
Click on Runner(Top one)
Select the Runner from "PROJECT" Not from "TARGETS"
Select configuration
And update all the modes for ex: In debug select "debug" configuration set
By Setting FLUTTER_ROOT as the Flutter sdk path solved this issue for me.
Setting runner to Generated in project->Info Configurations seemed to fix it. I can build in xcode now.
The simple solution was to call
flutter clean
flutter run
and then run the app from Xcode.
If changing the configuration as suggested above doesn't fix things
In your Build Phase scripts / Xcode Project change
$FLUTTER_ROOT/packages/flutter_tools/...
to
${FLUTTER_ROOT}/packages/flutter_tools/...
Did the trick for me after the upgrade to the new version of flutter broke the Build.
i have this intermittently while setting up flavors havent got an answer on fixing it but the best explanation of the trail is here https://github.com/flutter/flutter/issues/49495
What helped me was going under PROJECT -> Info -> Configurations
setting the following:
Debug:
Runner - None
fRunner - Debug
Release:
Runner - None
fRunner - Release
Profile:
Runner - None
fRunner - Generated
What worked for me was:
Removing my project ios folder.
(Save it elsewhere, as you will probably want to keep your Info.plist file and Podfile.)
Run flutter create . to build a new ios folder.
Replace new Info.plist and Podfile with originals.
(If you have firebase in your app as I did you likely will have to go into xcode and right-click on runner, add files to runner, and add your GoogleService-Info.plist)
flutter clean , flutter run
I tried all solutions but no one worked :( , I think there is a something missing in the flutter folder so the fast simple solution is ;)
delete flutter folder
Download the stable branch straight from GitHub instead of using an archive (url: https://docs.flutter.dev/get-started/install/macos)
git clone https://github.com/flutter/flutter.git -b stable
Verify that the flutter/bin directory is in your PATH by running
echo $PATH
flutter upgrade
flutter config enable-ios
flutter config enable-android
flutter doctor --android-licenses
flutter doctor -v
cd path/your_project_name
flutter run ios -t lib/main.dart
I have deleted my project on Xcode may it be .xcworkspace or .xcodeproj.
Because of that, I had to delete IOS and android folders while downgrading, updating and re-upgrading my react version to re-install IOS and android folders.
Thanks to that the emulator is working but unfortunately the project isn't present in the emulator and is still absent with Xcode. One thing to point out is that the simulator only appears when ran in the integrated terminal and nor in general terminal after cd-ing in the project folder.
Can anyone please help re-integrating the project in the emulator and on Xcode, please.
Here is the error when the emulator is running in a general terminal:
Here is the error when the emulator is running in a general terminal:
error Command failed: xcrun instruments -s
xcrun: error: Failed to determine realpath of '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator12.1.sdk' (errno=No such file or directory)
xcrun: error: unable to find utility "instruments", not a developer tool or in PATH
Here is the error for building the project within emulator when ran from VS code integrated terminal:
error Failed to build iOS project. We ran "xcodebuild" command but it exited with error code 65. To debug build logs further, consider building your app with Xcode.app, by opening project.xcodeproj
The process you need to follow is so similar to renaming a react native app. Basically you just need to run react-native upgrade in your root project directory. For further info you can check another question here. The instructions below explains how to create another react native project based on a copied one with a new name.
First copy the directory which your to-be-name-changed application exists. And go to your newly cloned directory.
Change the name at index.ios/android.js file which is given as a parameter to AppRegistry.
Change the name and version accordingly on package.json
Delete /ios and /android folders which are remaining from your older app.
Run $react-native upgrade to generate /ios and /android folders again.
Run $react-native link for any native dependency.
Finally run $react-native run-ios or anything you want.
Courtesy of
https://stackoverflow.com/questions/42506068/how-can-i-regenerate-ios-folder-in-react-native-project
I used this link https://blog.angular.io/apps-that-work-natively-on-the-web-and-mobile-9b26852495e7 to create a new shared application and it showed site on browser correctly. But when I built apk and installed in mobile, its showing error "Application entry point file not found"
Commands I followed:
ng new --collection=#nativescript/schematics --name=my-app --shared
cd my-app
tns build android
---> generated apk file which I tried to run on mobile but got error.
You need tns build android --bundle command as code shared projects work only with --bundle option.