Support Xcode 26

[hennadiib]

Hello Community,

I face the issue Xcode 26 is not supported now.
Can you confirm my understanding, please?

I try to build iOS version mobile game based on the LibGDX engine and fail.
Maybe some alternatives exist. I can not downgrade Xcode as my OS do not support older. (I am with Tahoe)

Main problem with LaunchScreen.storyboard.
I can disable it, but then my game is cut top and bottom with black rows.

For now, started "hard" way - installing virtual macOS to install older Xcode, but that can not be long term working solution.

Thanks in advance for your comments.

[dkimitsa]

hello @hennadiib ,

can you please provide more details, like error message stack trace etc.
why do you think it is an issue with Xcode 26 ?

thx.

[hennadiib]

Sure, my setup:
OS: Tahoe
Xcode: 26.2
RoboVMVersion: 2.3.20

After a good few days of debuggin it, I realised my build on the simulator is successful once I remove the file LaunchScreen.storyboard and lines in Info.plist.xml <key>UILaunchStoryboardName</key>. I checked in few sources, and output was - RoboVM not compatible with Xcode 26.

What I do:

1. Termanal ./gradlew ios:launchIPhoneSimulator

> Task :ios:launchIPhoneSimulator FAILED

[Incubating] Problems report is available at: file:///pathtoproject/projects/games/capitosh-game/build/reports/problems/problems-report.html

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':ios:launchIPhoneSimulator'.
> Failed to launch simulator
  Command '[/Applications/Xcode.app/Contents/Developer/usr/bin/ibtool, --target-device, iphone, --target-device, ipad, --minimum-deployment-target, 11.0, --output-partial-info-plist, /Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/partial-plists/LaunchScreen.storyboard_10836611712646846764.plist, --auto-activate-custom-fonts, --output-format, human-readable-text, --compilation-directory, pathtoproject/projects/games/capitosh-game/ios/build/robovm.tmp/IOSLauncher.app/Base.lproj, pathtoproject/projects/games/capitosh-game/ios/data/Base.lproj/LaunchScreen.storyboard]' failed  (Exit value: 1)

2. Run from Android Studio with the plugin.

[ERROR] Couldn't compile app
org.apache.commons.exec.ExecuteException: Command '[/Applications/Xcode.app/Contents/Developer/usr/bin/ibtool, --target-device, iphone, --target-device, ipad, --minimum-deployment-target, 11.0, --output-partial-info-plist, /Users/h9842/projects/games/capitosh-game/ios/robovm-build/tmp/iOS Run/ios/arm64-simulator/partial-plists/LaunchScreen.storyboard_7881940593718596925.plist, --auto-activate-custom-fonts, --output-format, human-readable-text, --compilation-directory, /Users/h9842/projects/games/capitosh-game/ios/robovm-build/tmp/iOS Run/ios/arm64-simulator/IOSLauncher.app/Base.lproj, /Users/h9842/projects/games/capitosh-game/ios/data/Base.lproj/LaunchScreen.storyboard]' failed  (Exit value: 1)
	at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
	at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
	at org.robovm.compiler.util.Executor.exec(Executor.java:344)
	at org.robovm.compiler.util.ToolchainUtil.ibtool(ToolchainUtil.java:359)
	at org.robovm.compiler.target.ios.IOSTarget$5.processFile(IOSTarget.java:960)
	at org.robovm.compiler.config.Resource.walk(Resource.java:447)
	at org.robovm.compiler.config.Resource.walk(Resource.java:454)
	at org.robovm.compiler.config.Resource.walk(Resource.java:434)

Internet and ChatGPT say - it is about compatibility of new Xcode and your product. ...Maybe I am wrong... Hope I am wrong :)

[dkimitsa]

thx for detail,
sadly can't see any error output from ibtool in your log.

meanwhile have tested and seems to be working for me:

• used gdx-liftoff-1.14.0.3.jar to generate simple iOS project;
• started it with ./gradlew --info launchIPhoneSimulator

I assume it might be related with you storyboard file.

could you please try on sample projects (with steps above) ?
also if it possible please share sample project that reproduce the issue.

Thx !

[hennadiib]

Hello @dkimitsa ,
Here is an initial LibGDX project without any changes. https://github.com/hennadiib/reproduce-issue-libgdx-romovm
To run it on android - simply connect device and start in Android Studio...
To run on iOS I create a configuration with RoboVM in Android Studio, start the iOS simulator, and run...
It fails with the error below...

[ERROR] Couldn't compile app
org.apache.commons.exec.ExecuteException: Command '[/Applications/Xcode.app/Contents/Developer/usr/bin/ibtool, --target-device, iphone, --target-device, ipad, --minimum-deployment-target, 12.0, --output-partial-info-plist, /Users/h9842/projects/games/reproduce-issue-libgdx-romovm/ios/robovm-build/tmp/Unnamed/ios/arm64-simulator/partial-plists/LaunchScreen.storyboard_7601392009758403706.plist, --auto-activate-custom-fonts, --output-format, human-readable-text, --compilation-directory, /Users/h9842/projects/games/reproduce-issue-libgdx-romovm/ios/robovm-build/tmp/Unnamed/ios/arm64-simulator/IOSLauncher.app/Base.lproj, /Users/h9842/projects/games/reproduce-issue-libgdx-romovm/ios/data/Base.lproj/LaunchScreen.storyboard]' failed  (Exit value: 1)
	at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
	at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
	at org.robovm.compiler.util.Executor.exec(Executor.java:344)
	at org.robovm.compiler.util.ToolchainUtil.ibtool(ToolchainUtil.java:359)
	at org.robovm.compiler.target.ios.IOSTarget$5.processFile(IOSTarget.java:960)
	at org.robovm.compiler.config.Resource.walk(Resource.java:447)
	at org.robovm.compiler.config.Resource.walk(Resource.java:454)
	at org.robovm.compiler.config.Resource.walk(Resource.java:434)

[hennadiib]

My simulators may be outdated...checking one more thing now.
Output of command you provided:

/Applications/Xcode.app/Contents/Developer/usr/bin/actool --output-format human-readable-text --app-icon AppIcon --output-partial-info-plist /Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/partial-plists/Assets.xcassets_47264947165383153.plist --platform iphonesimulator --export-dependency-info /Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/assetcatalog_dependencies --minimum-deployment-target 11.0 --target-device iphone --target-device ipad --compress-pngs --compile /Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/IOSLauncher.app /Users/h9842/projects/games/capitosh-game/ios/data/Assets.xcassets
/* com.apple.actool.errors */
/Users/h9842/projects/games/capitosh-game/ios/data/Assets.xcassets: error: No simulator runtime version from ["21A342", "21C62"] available to use with iphonesimulator SDK version 23C53
/* com.apple.actool.compilation-results */
/Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/IOSLauncher.app/AppIcon60x60@2x.png
/Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/IOSLauncher.app/AppIcon76x76@2x~ipad.png
/Users/h9842/projects/games/capitosh-game/ios/build/robovm.tmp/partial-plists/Assets.xcassets_47264947165383153.plist

[dkimitsa]

I use 26.1.1.

error: No simulator runtime version from ["21A342", "21C62"] available to use with iphonesimulator SDK version 23C53

there are issues with simulator runtime as I mentioned above. Try removing not available / fixing them through Xcode-devices menu.

[hennadiib]

UPDATE - give me 10 minutes :) Seams I see issue...

@dkimitsa I try to cleanup all the simulators I have.
error still the same:
/Users/h9842/projects/games/capitosh-game/ios/data/Assets.xcassets: error: No simulator runtime version from ["21A342", "21C62"] available to use with iphonesimulator SDK version 23C53

Can you once again point me on possible solution? Can not understand why it works for you and not for me...

[dkimitsa]

21A342", "21C62" seems to be related to ios17 runtime.

I would go to Xcode-Settings-Components and check what iOS simulators you have there.
probably iOS17 are broken one.

the option would be to delete all not required/broken (or all).
and re-install if you need anything other than iOS 26

[hennadiib]

Oh man, you are so right! @dkimitsa
The problem was with simulator...
I used Xcode few years back for similar task (start simulator) and created some fake project for that.
Opened always this project in Xcode... Just now I created new one, Xcode trigger automatically installing new simulator.
Issue solved. App started as expected.
I burned two days on this 🙂 So ridiculous.

Thanks a lot for your time, patience, and support!

(Тищі і миру на батьківщині)