clang++ exited with code 1: building for 'iOS', but linking in object file libswiftCompatibility50.a[arm64][7](Overrides.cpp.o) built for 'iOS-simulator'

[FlavioGoncalves-Cayas]

Description

Hello,

I am having issues building my net9.0 MAUI app for iOS on Azure DevOps, while it works perfectly fine locally. I already compared the workloads, sdks and XCode versions.

Here is the error I am receiving:

/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net9.0_18.2/18.2.9180/targets/Xamarin.Shared.Sdk.targets(1665,3): error : clang++ exited with code 1: [redacted.csproj]
/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net9.0_18.2/18.2.9180/targets/Xamarin.Shared.Sdk.targets(1665,3): error : ld: building for 'iOS', but linking in object file (/Applications/Xcode_16.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCompatibility50.a[arm64][7](Overrides.cpp.o)) built for 'iOS-simulator' [redacted.csproj]
/Users/runner/hostedtoolcache/dotnet/packs/Microsoft.iOS.Sdk.net9.0_18.2/18.2.9180/targets/Xamarin.Shared.Sdk.targets(1665,3): error : clang++: error: linker command failed with exit code 1 (use -v to see invocation) [redacted.csproj]

This is the pipeline configuration:

vmImage: macOS-15
.NET SDK: 9.0.102
XCode: 16.2
workloads:
  ios                        18.2.9180/9.0.100      SDK 9.0.100        
  maui                       9.0.14/9.0.100         SDK 9.0.100        
  maui-ios                   9.0.14/9.0.100         SDK 9.0.100 

I am using dotnet publish:

dotnet publish redacted.csproj -f net9.0-ios -c Release -p:ArchiveOnBuild=true -p:RuntimeIdentifier=ios-arm64 -p:CodesignKey="$(APPLE_CERTIFICATE_SIGNING_IDENTITY)"

Any ideas on how to fix it, or what's the underlying issue?

I am also wondering why it says Xcode_16.app in the error, when I specifically selected XCode 16.2 with sudo xcode-select -s /Applications/Xcode_16.2.app

@rolfbjarne maybe it's more of a macios issue?

Steps to Reproduce

No response

Link to public reproduction project repository

No response

Version with bug

9.0.30 SR3

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

[rolfbjarne]

I am also wondering why it says Xcode_16.app in the error, when I specifically selected XCode 16.2 with sudo xcode-select -s /Applications/Xcode_16.2.app

That's probably the issue.

Check if this file exists, and if it does, just delete it:

~/Library/Preferences/Xamarin/Settings.plist

For more information see: #11172 (comment)

[FlavioGoncalves-Cayas]

@rolfbjarne thanks for the reply.

cat ~/Library/Preferences/Xamarin/Settings.plist returns no such file or directory

So it looks like that is not the issue.

Also xcode-select -p returns /Applications/Xcode_16.2.app/Contents/Developer as expected, after sudo xcode-select -s /Applications/Xcode_16.2.app