Onesignal-flutter-sdk: Xcode linker error on Archive

[rgbinnovation]

Hi, I'm having issues when I'm trying to Archive my project (preparing for App Store submit). Xcode throws a linker error. When I Build the project, it shows as a warning and the build is OK. But when I try to Archive, it becomes an error and I can't make an Archive.

Message

Ld /Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/OneSignalNotificationServiceExtension.appex/OneSignalNotificationServiceExtension normal arm64
    cd /Users/rgb/Repositories/cadsys_member_app_flutter/ios
    export IPHONEOS_DEPLOYMENT_TARGET=12.1
    export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.1.sdk -L/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/BuildProductsPath/Release-iphoneos -L/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/BuildProductsPath/Release-iphoneos/onesignal -L/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/BuildProductsPath/Release-iphoneos/shared_preferences -L/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/BuildProductsPath/Release-iphoneos/url_launcher -F/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/BuildProductsPath/Release-iphoneos -F/Users/rgb/Repositories/cadsys_member_app_flutter/ios/Pods/../.symlinks/flutter/ios-release -F/Users/rgb/Repositories/cadsys_member_app_flutter/ios/Pods/OneSignal/iOS_SDK/OneSignalSDK/Framework -filelist /Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Runner.build/Release-iphoneos/OneSignalNotificationServiceExtension.build/Objects-normal/arm64/OneSignalNotificationServiceExtension.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @executable_path/../../Frameworks -miphoneos-version-min=12.1 -dead_strip -Xlinker -object_path_lto -Xlinker /Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Runner.build/Release-iphoneos/OneSignalNotificationServiceExtension.build/Objects-normal/arm64/OneSignalNotificationServiceExtension_lto.o -fobjc-arc -fobjc-link-runtime -fapplication-extension -ObjC -lonesignal -lshared_preferences -lurl_launcher -framework Flutter -framework OneSignal -framework SystemConfiguration -framework UIKit -framework UserNotifications -ObjC -framework OneSignal -framework SystemConfiguration -framework UIKit -framework UserNotifications -e _NSExtensionMain -lPods-OneSignalNotificationServiceExtension -Xlinker -dependency_info -Xlinker /Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/Runner.build/Release-iphoneos/OneSignalNotificationServiceExtension.build/Objects-normal/arm64/OneSignalNotificationServiceExtension_dependency_info.dat -o /Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/ArchiveIntermediates/Runner/IntermediateBuildFilesPath/UninstalledProducts/iphoneos/OneSignalNotificationServiceExtension.appex/OneSignalNotificationServiceExtension

Short version

ld: library not found for -lonesignal
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Any idea about this?

[rgbinnovation]

Ok some more information:

    ld: warning: directory not found for option '-L/Users/rgb/Repositories/cadsys_member_app_flutter/build/ios/Release-iphoneos/onesignal'
    ld: library not found for -lonesignal

Seems the directory is not created when I run FLUTTER BUILD IOS? Attaching an image of the release directory:

[rgbinnovation]

Ok, I have a fix. It seems that this is related to the framework issues with Flutter/Flutter.h that many people are experiencing. For some reason files become aliases. I noticed that in the OneSignalSDK folder, all of the files had been converted to aliases. What I had to do, was copy the actual files from Versions/A into the Framework and overwrite the aliases. Then I was able to build the Archive.

Screenshot below of AFTER I overwrote the files. Forgot to take a "before" picture. But, basically all of the files and folder under OneSignal.Framework was aliases (just like the folder named Current).

Is this a Flutter issue? Or something with your Framework?

[Nightsd01]

We believe this is an issue with the Flutter Cocoapods integration that can sometimes screw up the symlinks for our framework. The aliases/symlinks are the standard way to build iOS frameworks as there’s no point in duplicating files.

[lifenautjoe]

Any solution to this?

[rgbinnovation]

Have found that if you run this in Terminal to delete the DerivedData folder, thing seem to work in Xcode in oder to build an Archive:

rm -rf ~/Library/Developer/Xcode/DerivedData/

BUT, now Visual Studio Code is acting up instead. Linker error again, and it is ALWAYS OneSignal that is the issue:

/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/Runner.build/Debug-iphonesimulator/OneSignalNotificationServiceExten
sion.build/OneSignalNotificationServiceExtension.appex-Simulated.xcent -lPods-OneSignalNotificationServiceExtension -Xlinker -dependency_info -Xlinker

/Users/rgb/Library/Developer/Xcode/DerivedData/Runner-bfsbdjyhevoadldwunsvgeguxclc/Build/Intermediates.noindex/Runner.build/Debug-iphonesimulator/OneSignalNotificationServiceExten
sion.build/Objects-normal/x86_64/OneSignalNotificationServiceExtension_dependency_info.dat -o
/Users/rgb/Repositories/xyz_member_app_flutter/build/ios/Debug-iphonesimulator/OneSignalNotificationServiceExtension.appex/OneSignalNotificationServiceExtension
ld: warning: directory not found for option '-L/Users/rgb/Repositories/xyz_member_app_flutter/build/ios/Debug-iphonesimulator/onesignal'
ld: warning: directory not found for option '-L/Users/rgb/Repositories/xyz_member_app_flutter/build/ios/Debug-iphonesimulator/shared_preferences'
ld: warning: directory not found for option '-L/Users/rgb/Repositories/xyz_member_app_flutter/build/ios/Debug-iphonesimulator/url_launcher'
ld: library not found for -lonesignal
clang: error: linker command failed with exit code 1 (use -v to see invocation)

If I didn't have to update my web app in 100 places to migrate to Firebase< I would have done so long ago. OneSignal is literally my only issue while building my app in Flutter.

[rgbinnovation]

@Nightsd01 is there any change that this will be looked at?

[rgomezp]

Please see #42 for more info on this