Xamarin.iOS builds failing with Xcode 13.4.1

[jcmanke]

Description

Xamarin.iOS builds using Xcode 13.4.1 have been failing since the default Xcode version was updated to 14.0.1.

Xcode version is being set to 13.4.1 using xcode-select tool but the build logs show 14.0.1 is still being used, for example:

53:03.2743340Z _CoreOptimizePngImages:
2022-10-05T16:53:03.2744990Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/if_arrow_sans_down_103299.png obj/iPhone/VT/optimized/if_arrow_sans_down_103299.png 
2022-10-05T16:53:03.6841120Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/hmb.png obj/iPhone/VT/optimized/hmb.png 
2022-10-05T16:53:04.0930740Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/hmb@2x.png" "obj/iPhone/VT/optimized/hmb@2x.png" 
2022-10-05T16:53:04.3386240Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/hmb@3x.png" "obj/iPhone/VT/optimized/hmb@3x.png" 
2022-10-05T16:53:04.6047180Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/Profile@2x.png" "obj/iPhone/VT/optimized/Profile@2x.png" 
2022-10-05T16:53:04.8320410Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/Profile@3x.png" "obj/iPhone/VT/optimized/Profile@3x.png" 
2022-10-05T16:53:05.2525790Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/Profile.png obj/iPhone/VT/optimized/Profile.png 
2022-10-05T16:53:05.6371970Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/Images/about_screen_list_image.png obj/iPhone/VT/optimized/Images/about_screen_list_image.png 
2022-10-05T16:53:05.9819350Z   /Applications/Xcode_14.0.1.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/icon_green_check.png obj/iPhone/VT/optimized/icon_green_check.png 

The build fails with an error message about the dsymutil utility not being found under 13.4.1.

sh: line 1: 20624 Abort trap: 6           /Applications/Xcode_13.4.1.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_13.4.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -find dsymutil 2> /dev/null
  xcrun: error: sh -c '/Applications/Xcode_13.4.1.app/Contents/Developer/usr/bin/xcodebuild -sdk /Applications/Xcode_13.4.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -find dsymutil 2> /dev/null' failed with exit code 34304: (null) (errno=Invalid argument)
  xcrun: error: unable to find utility "dsymutil", not a developer tool or in PATH

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 18.04
• Ubuntu 20.04
• Ubuntu 22.04
• macOS 10.15
• macOS 11
• macOS 12
• Windows Server 2019
• Windows Server 2022

Image version and build link

Runner Image
Image: macos-12
Version: 20220929.2

Is it regression?

macos-12 version 20220917.1

Expected behavior

Xamarin.iOS build uses Xcode 13.4.1 and succeeds.

Actual behavior

Build is using Xcode 14.0.1 tooling and fails upon trying to find a 13.4.1 tool.

Repro steps

1. Run script sudo xcode-select -s "/Applications/Xcode_13.4.1.app"
2. Run a build with task XamariniOS@2

[al-cheb]

Hey @jcmanke.
Could you try using this action to pick up Xcode version - https://github.com/marketplace/actions/setup-xcode-version ?

- uses: maxim-lobanov/setup-xcode@v1
  with:
        xcode-version: '13.4.1'

[jcmanke]

I am using an Azure DevOps build pipeline, not GitHub.

[al-cheb]

I am using an Azure DevOps build pipeline, not GitHub.

In AZDO you should use this command:
sudo xcode-select -s "/Applications/Xcode_13.4.1.app/Contents/Developer"

[jcmanke]

I am doing that, and the build is failing. Did you read before you started replying?

[al-cheb]

I am doing that, and the build is failing. Did you read before you started replying?

I see you provided a different command:
Run script sudo xcode-select -s "/Applications/Xcode_13.4.1.app"

[jcmanke]

I'm sorry, I copy pasted that from #6225 when I was creating the issue. My actual YAML pipeline step is including /Contents/Developer when calling xcode-select.

[al-cheb]

Could you try to select xamarin ios bundle - Set the Xamarin SDK version on macOS ?

- script: sudo $AGENT_HOMEDIRECTORY/scripts/select-xamarin-sdk.sh 6_12_19
  displayName: 'Select Xamarin SDK version'

[jcmanke]

Still the same error with that script.

[al-cheb]

Still the same error with that script.

Could you share a test repo?

[al-cheb]

@jcmanke, Any updates?

[williamchenicon]

Any updates?

[jcmanke]

Attaching logs for a failed build using Xcode 13.4.1 and Xamarin SDK 6_12_19
logs_167763.zip

[jcmanke]

Adding this to the script fixed the build for me:

echo '##vso[task.setvariable variable=MD_APPLE_SDK_ROOT;]'/Applications/Xcode_13.4.1.app

Full AzDO pipeline step:

# Step template to include script which manually select Xamarin SDK version on the Hosted macOS agent
  steps:
  # To manually select a Xamarin SDK version on the Hosted macOS agent, enable this script with the SDK version you want to target
  # https://go.microsoft.com/fwlink/?linkid=871629
  # parameter values: xcodeVersion = Xcode_13.4.1.app, xamarinSdkVersion = 6_12_19
  - script: |
              #List all details about the mac build machine
              system_profiler SPDeveloperToolsDataType

              #Select  the specific XCode version
              echo '##vso[task.setvariable variable=MD_APPLE_SDK_ROOT;]'/Applications/${{ parameters.xcodeVersion }}
              
              sudo xcode-select -s /Applications/${{ parameters.xcodeVersion }}/Contents/Developer
              sudo xcode-select -print-path
              
              sudo rm -f '/Applications/Xcode.app'
              sudo ln -s '/Applications/${{ parameters.xcodeVersion }}' '/Applications/Xcode.app'

              #Select  the specific Xamarin SDK version
              sudo $AGENT_HOMEDIRECTORY/scripts/select-xamarin-sdk.sh ${{ parameters.xamarinSdkVersion }}
              
              #List the various developer tools available on the Agent
              ls -l /Applications
    displayName: 'Select Xcode and Xamarin SDK versions'
    enabled: true