[iOS] release build fails

[Nico04]

I've just migrated from ssh to ssh2.
App works fine on Android (debug and release), and on iOS in debug mode, but it doens't build in release mode.

flutter build ios or flutter build ipa fails :

Xcode's output:
↳
    warning: [CP] Unable to find matching .xcframework slice in 'ios-x86_64-simulator ios-arm64 ios-x86_64-maccatalyst' for the current build architectures (arm64 armv7).
    warning: [CP] Unable to find matching .xcframework slice in 'ios-arm64 ios-x86_64-simulator ios-x86_64-maccatalyst' for the current build architectures (arm64 armv7).
    warning: [CP] Unable to find matching .xcframework slice in 'ios-x86_64-simulator ios-x86_64-maccatalyst ios-arm64' for the current build architectures (arm64 armv7).
    ld: library not found for -lcrypto
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    Command Ld failed with a nonzero exit code
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Analyzing workspace
    note: Constructing build description
    note: Build preparation complete

Encountered error while building for device.

It's the same error on my mac and on my CI/CD.

Note that flutter run --release works fine.

I'm using Flutter 2.5.1 with null-safety.

Any idea ?

[jda258]

That's odd as flutter run --release should do a build of the release version. When I've had build issues with iOS in the past, this has helped:

1. Run flutter clean && flutter pub get in your project directory
2. Make sure you're using the latest version of CocoaPods by running the command sudo gem install cocoapods
3. Run pod deintegrate && rm Podfile.lock && pod install --repo-update in your project's ios directory
4. Now try building

You may also be running into an iOS version mismatch. Make sure you've specified version 9.0 or later.

If you still have trouble, try building inside of Xcode to see if you get more information in the build output.

[jda258]

You also may have run into this issue if you've updated Xcode recently: https://stackoverflow.com/questions/63607158/xcode-12-building-for-ios-simulator-but-linking-in-an-object-file-built-for-io

[Nico04]

Thank you for your quick answer.
I've tester all of the above, unfortunatly is extacly the same. Please note that I have the same error on my CI/CD which use a clean environment each time.
I've got the same error on XCode 15.5.1 when archiving also.

Target and minimum iOS version are set to 10.0.
If remove the plugin from my project, it compiles well.

It's the same if I compile for generic device or for my iPhone 6S.

I've tested to exclude architecures, to use "Validate Workspace" as the link your provided suggest, doesn't change the error.

Any other idea ?

[jda258]

I just published version 2.2.3, which excludes the arm64 architecture for the simulator. You may need to delete your Podfile.lock and run flutter clean before building. Hopefully this fixes your issue at the plugin level so you don't need to do overrides in your Podfile.

[jda258]

I just published version 2.2.3, which excludes the arm64 architecture for the simulator. You may need to delete your Podfile.lock and run flutter clean before building. Hopefully this fixes your issue at the plugin level so you don't need to do overrides in your Podfile.

[jda258]

Just to let you know, I'm still working on this.

[jda258]

I've tried for hours to get this working in the example app, but no luck so far. It works in an app I'm developing, and here are the build setting differences in project.pbxproj for the Release build (working version on left side):

21d20
<                                 CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
31a31
>                                 "EXCLUDED_ARCHS[sdk=iphonesimulator*]" = "i386 arm64";
42d41
<                                 ONLY_ACTIVE_ARCH = NO;
43a43
>                                 SUPPORTED_PLATFORMS = "iphonesimulator iphoneos";
44a45
>                                 SWIFT_OPTIMIZATION_LEVEL = "-O";

I've set pretty much everything I can the same in the target and runner settings, but still no go. :(

[Nico04]

I've tested the last version 2.2.3 with Flutter 2.5.2, same issue unfortunately.
Did you find any lead ?

[Nico04]

Did you find time to search more ?

[michaelchevallier]

Hi @jda258 , I'm having the exact same problem as @Nico04.
My 2 cents:

• Build a release version of an ios app => DOES NOT work
• Build a debug version => Works
• And somehow: flutter run --release WORKS on an ios device. (iphone 12 Mini ios 15.1)

I'm starting to wonder if creating a package with flutter tools from scratch and copy pasting files would solve this ?

I hope my contribution can help in a way.

[Nico04]

I've spent some few hour this morning trying to start from a fresh project and copy sources into.
But my knowledge of ios are too narrow.
Maybe we can try using this fork of the plugin, which seems more recent : https://github.com/gallinaettore/NMSSH ?

[jda258]

Thanks for your work on this @Nico04! That fork looks very promising. It hasn't been released on CocoaPods, so we'd have to include the code in our repo.