[CP] Upgrading to Xcode 14.3 will not build when plugin transitive dependencies have a low deployment target

[jmagman]

issue_link

#124340

Commit Hash

c60f20

Target

stable

pr_link

#124527

Impacted Users

App developers running latest Xcode building iOS or macOS apps with certain plugins, including some firebase plugins

Impact Description

When running latest Xcode (14.3) iOS and macOS apps will not build when using certain plugins that have dependencies with very low iOS target versions. This includes any apps that use firebase_auth.

Workaround

1. Downgrade to Xcode 14.2
2. Add a workaround to ios/Podfile and macos/Podfile that sets the pods to the same version the Flutter app is targeting. https://stackoverflow.com/questions/75574268/missing-file-libarclite-iphoneos-a-xcode-14-3

``

Risk

low

Test Coverage

yes

Validation Steps

1. Check out 3.7.10 or be on master to pick up Upgrading to Xcode 14.3 breaks iOS app publishing: link_stat failed: No such file or directory #123890

$ flutter create test_create
$ cd test_create

3. Add a plugin with a lower-than-9 iOS dependency target (I used flutter_appauth) as a pubspec dependency.

$ flutter build ios

On master this does not build:

Error (Xcode): File not found: /Users/m/Applications/Xcode-14-3.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/arc/libarclite_iphoneos.a


Error (Xcode): Linker command failed with exit code 1 (use -v to see invocation)

On this PR it does build.

[itsjustkevin]

Approving this as it has already been validated by @christopherfujino and @vashworth on the master channel.

[christopherfujino]

LGTM

[larssn]

When running latest Xcode (14.2)

I think you mean 14.3 🙂

Anyway, setting the deployment target to 11 is not a valid workaround for us (in 14.3). It is already set to 13, and the error remains: File not found: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/arc/libarclite_iphoneos.a

This is just an FYI; we're looking at other workarounds

EDIT:
This was the workaround that ended up working (replace the post_install lines in Podfile):

post_install do |installer|
  installer.generated_projects.each do |project|
        project.targets.each do |target|
            target.build_configurations.each do |config|
                config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.0'
             end
        end
 end
    installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
  end
end

[jmagman]

I think you mean 14.3 🙂

Thanks, I did, updated.

EDIT: This was the workaround that ended up working (replace the post_install lines in Podfile):

I linked to https://stackoverflow.com/questions/75574268/missing-file-libarclite-iphoneos-a-xcode-14-3 which says to set IPHONEOS_DEPLOYMENT_TARGET as you did. The screenshot was to show you how to figure out what version to set it to.

We don't really need to document the workaround in detail in this hotfix request, you can check stackoverflow, my point is that the workaround involves manually updating files, which developers shouldn't need to do.

[jmagman]

@CaseyHillers since this was included in 3.7.11 (thank you!), can this be closed?
https://github.com/flutter/flutter/wiki/Hotfixes-to-the-Stable-Channel#3711-apr-12-2023