Ok, I'm going crazy here. I have a static library for iOS that I want to build for the simulator. I use xcodebuild -destination="iOS Simulator" and then check the library using otool which tells me the platform is 6, which is Mac Catalyst.
When I look at the output of xcodebuild, it says
--- xcodebuild: WARNING: Using the first of multiple matching destinations:
{ platform:macOS, arch:arm64, variant:Mac Catalyst, id:00006041-0008492E3AA1801C, name:My Mac } ...
It has the simulator listed too, way down the list:
{ platform:iOS Simulator, arch:x86_64, id:AB7A99B3-8D24-4F73-A42D-9BB45321928D, OS:18.6, name:iPad (A16) }
When I put all of that into xcodebuild for the platform, it still says there are multiple matching destinations and chooses Mac Catalyst. Why? How? What? Does platform="iOS Simulator" mean nothing? How in the world does "Mac Catalyst" match "iOS Simulator"?????
I don't want Mac Catalyst, I don't need Mac Catalyst, and I can't get rid of Mac Catalyst. Nothing I specify in xcodebuild results in anything I can build that will compile for the simulator.
What the heck am I doing wrong?
Developer Tools
RSS for tagAsk questions about the tools you can use to build apps.
Posts under Developer Tools tag
200 Posts
Selecting any option will automatically load the page
Post
Replies
Boosts
Views
Activity
So basically Apple suspended my developer account for no reason, I just had a lot of purchases from my game, then Apple sent me an email saying they are investigating my account, and finally they suspended my account, I don't know why, so can anyone help me?
Topic:
Developer Tools & Services
SubTopic:
Apple Developer Program
Tags:
Developer Tools
Accounts
App Store
Hi all.
I have tried using UIDesignRequiresCompatibility YES & NO for an application.
Running on iOS 26 BETA 5 makes no difference to the UI.
Running on Simulator MacOSS 26 BETA 5 makes no difference to the UI.
Anyone had luck with this info plist setting?
This question is a component of this question and an extension to this question which has been solved. This situation might feel a pinch constructed but it is a simplified version of one step of the original question.
Basically in my app I have a script that outputs a folder with a few files inside of it. This folder is output to $(BUILT_PRODUCTS_DIR)/build/ and is referenced via a PBXBuildFile. Because I put a wait in the script (to simulate a long build I have in my real project) it is very obvious when the script is or isn't run. The goal would be for it to run only when its dependencies have changed.
The trick is if I put this script as a "run script" phase within my final target dependency analysis works great. The script only runs when the dependencies are updated. However if I put the "run script" phase into an aggregate target then add it as a Target Dependency in the main target Xcode wants to run the script every time. Regardless of if the dependencies have changed. However if you build just the aggregate target alone everything goes just fine. It only builds when it has to.
To me this does not quite make sense. I thought that dependency analysis of the script within my aggregate target would be the same regardless of whether that script was within the aggregate target or the main target.
In my app I ideally need the aggregate target to be shared by multiple other targets. While I could put the script in each it would be more foolproof to have them share an aggregate target.
Why would dependency analysis come to a different conclusion when the script is within an aggregate target that is a target dependency of the main target?
If it helps here is the script and the entire project can be found here on GitHub if you would like to play with it.
mkdir -p "${SCRIPT_OUTPUT_FILE_0}/build/"
echo "Pausing for 10 seconds before creating files..."
sleep 10
cat "${SCRIPT_INPUT_FILE_0}"
cat > "${SCRIPT_OUTPUT_FILE_0}/build/index.html" << EOF
<!DOCTYPE html>
<html>
<head>
<title>Simple Page</title>
</head>
<body>
<h1>Welcome to Simple Page</h1>
<p>Generated at: $(date)</p>
</body>
</html>
EOF
cat > "${SCRIPT_OUTPUT_FILE_0}/build/page.html" << 'EOF'
<!DOCTYPE html>
<html>
<head>
<title>Simple Page</title>
</head>
<body>
</body>
</html>
EOF
This week I update from Xcode 16.0 to Xcode 16.4.
Today I realized, that the Menu item "New Group without Folder" does no more appear, when I press the option key.
I tried to find an answer with DuckDuch Go and Chat GPT, but without success.
Can anyone help me, how to fix that issue?
Thanks a lot.
Background:
During daily usage of iOS devices, devices experience noticeable thermal issues. This heating not only affects user experience, but may also lead to device performance throttling, shortened battery life, and other problems. We need better understanding and monitoring of device thermal states to optimize application performance and user experience.
Issues Encountered:
Insufficient thermal monitoring capabilities: Unable to obtain real-time accurate temperature data from devices
Difficult power consumption analysis: Hard to determine which specific modules or threads cause high power consumption and heating
Requested Solutions:
Temperature Monitoring API: Provide accessible device temperature reading interfaces
Thermal Attribution Analysis Capability: During heating events, we expect to receive more detailed power consumption monitoring data, such as CPU, GPU, network, location services, display, high power consumption thread stacks and other information to help developers identify high energy consumption operations
Topic:
App & System Services
SubTopic:
General
Tags:
MetricKit
Developer Tools
Instruments
Performance
I have the following technical scenario: I need to implement the “Update Now” alert flow that forces the user to download the latest version from the App Store before continuing to use the application.
Conditions and limitations:
I have no access to the frontend code, I can only make changes in the backend.
The current version of the app was not designed to receive or process a signal from the backend indicating that the update alert should be displayed.
The current frontend is connected to a different backend(PHP) than the one that will be used for the new app version, so it is not possible to implement this logic on the client side for older versions.
Goal:
To find out if there is any method, configuration, or API (for example, in App Store Connect or through some distribution mechanism) that allows forcing the mandatory update alert without modifying the current binary or frontend, only through backend responses or settings.
Has anyone implemented this type of control, or does Apple provide any tool to achieve this?
Thanks.
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
Tags:
Developer Tools
TestFlight
In my project I have an aggregate target that runs a script that generates a "web bundle" in a folder build/ with all the html/css/resources needed for the website. These resources are generated via a script. I use these resources in multiple targets so I have created an aggregate target to make this simple.
However, I have not found this simple. If I have the aggregate target output to $(DERIVED_FILE_DIR)/ then it outputs to a path that looks like this
DerivedData/BrowserApp-bla/Build/Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/DerivedSources/build/index.html
If I then drag that folder into Xcode and create a folder that references it. Then take that reference and make it relative to build products I get this
A9DE6A502E41E397005EF4E0 /* build */ = {
isa = PBXFileSystemSynchronizedRootGroup;
name = build;
path = "../../Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/DerivedSources/build";
sourceTree = BUILT_PRODUCTS_DIR;
};
This is because to the main BrowserApp target the BUILT_PRODUCTS_DIR is DerivedData/BrowserApp-bla/Build/Products/Debug-iphonesimulator.
You can see that the reference essentially has to maneuver out of the built products folder for the main BrowserApp target and into the built products directory for WebBundle.
This is ok for a debug build I suppose you can imagine that this is going to break down the moment you have a release build.
Now if we ignore that problem then comes the problem of getting it in Copy Bundle Resources. Xcode 16s PBXFileSystemSynchronizedRootGroup is a great improvement but does not help here. The only way I have found to get the folder copied is to hop into an earlier Xcode or make the following modifications.
Change the PBXFileSystemSynchronizedRootGroup into a PBXBuildFile
(In PBXFileReference section)
A9DE6A502E41E397005EF4E0 /* ../../Intermediates.noindex/client.build/Debug/WebBundle.build/DerivedSources/build */ = {isa = PBXFileReference; lastKnownFileType = text; path = ../../Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/DerivedSources/build; sourceTree = BUILT_PRODUCTS_DIR; };
(In the mainGroup PBXGroupSection)
A9DE6A502E41E397005EF4E0 /* ../../Intermediates.noindex/client.build/Debug/WebBundle.build/DerivedSources/build */,
Then remove any references for A9DE6A502E41E397005EF4E0 as a synchronized group
Create a PBXBuildFile using the previous PBXBuildFile as its fileRef then add it to the copy resources stage
(In PBXBuildFile section)
96516AC32BF928DD00576562 /* ../../Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/DerivedSources/build in Resources */ = {isa = PBXBuildFile; fileRef = A9DE6A502E41E397005EF4E0 /* ../../Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/DerivedSources/build */; };
(In the PBXBuildResources phase for the resources section of the main target)
96516AC32BF928DD00576562 /* ../../Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/
I do not know of a way to do this with a PBXFileSystemSynchronizedRootGroup so these manual changes seem necessary. After these changes I have the following:
And you can confirm the entire folder is accessible to the app. However if you try to build for release/Archive you get
lstat(/Users/calebkierum/Library/Developer/Xcode/DerivedData/BrowserApp-bla/Build/Intermediates.noindex/ArchiveIntermediates/BrowserApp/Intermediates.noindex/BrowserApp.build/Debug-iphonesimulator/WebBundle.build/DerivedSources/build): No such file or directory (2)
Which makes sense. The file reference has a relative path that explicitly mentions "debug" however because this path is based on an aggregate target I am not sure how you really update this reference for release.
An Administrator account is executing safaridriver --enable but it doesn't apply to other standard user accounts and standard accounts can't enable it directly. Is this expected behavior? How can standard users make use of safaridriver?
Context
I trained a LoRA adapter for Apple’s on-device language model using the Foundation Models Adapter Training Toolkit v0.2.0 on macOS 26 beta 4. Although training completes successfully, loading the resulting .fmadapter package fails with:
Adapter is not compatible with the current system base model.
What I’ve Observed,
Hard-coded Signature: In export/constants.py, the toolkit sets,
BASE_SIGNATURE = "9799725ff8e851184037110b422d891ad3b92ec1"
Metadata Injection: The export_fmadapter.py script writes this value into the adapter’s metadata:
self_dict[MetadataKeys.BASE_SIGNATURE] = BASE_SIGNATURE
Compatibility Check: At runtime, the Foundation Models framework compares the adapter’s baseModelSignature against the OS’s system model signature, and reports compatibleAdapterNotFound if they don’t match—without revealing the expected signature.
Questions
Signature Generation - What exactly does the toolkit hash to derive BASE_SIGNATURE? Is it a straight SHA-1 of base-model.pt, or is there an additional transformation?
Recomputing for Beta 4 - Is there a way to locally compute the correct signature for the macOS 26 beta 4 system model?
Toolkit Updates - Will Apple release Adapter Training Toolkit v0.3.0 with an updated BASE_SIGNATURE for beta 4, or is there an alternative workaround to generate it myself?
Any guidance on how the Foundation Models framework derives and verifies the base model signature—or how to regenerate it for beta 4—would be greatly appreciated.
My app uses VStack and HStack, instead of the normal table format. When I try to print everything works perfect but it will not print the cell outline.
What is the correct line code or instruction terminology?
Thanks, Hal
I'm experiencing a specific issue where when using any of the MacOS 26 Tahoe betas with Low Power Mode enabled and using Vsync in fullscreen, my application framerate gets limited to a hard 30 fps. I have not experienced this on any older OS. For example Low Power Mode on 13.6 Ventura with Vsync fullscreen lets my application run at full 60 fps without issues.
Is this a bug or a change in behavior of Low Power Mode on Tahoe?
My application is 3D, runs at 60 fps and is sensitive to tearing, so I need Vsync and it is mostly utilized in fullscreen. And Low Power Mode is a default for many Macs, so default experience on Tahoe currently is a halved 30 fps. However there also seems to be inconsistencies of on which machines this happens, but older OSes are always fine.
We executed the iOS package using UE5.5 on Windows. UE automatically launched the "Metal Developer Tools for Windows". I tried two versions, 5.3 and 4.4. I found that the metal.exe sometimes had no response or output was empty. The problem of no response could be alleviated by adding timeout retries, but the problem of empty output seemed to have no effect with retries. The actual command line called was: metal.exe -v --target=air64-apple-darwin18.7.0. UE relies on this output to determine the version number, and if it cannot get it, it will crash directly.
During our replication test, we used a Python script to run multiple concurrent executions of the command "metal.exe -v --target=air64-apple-darwin18.7.0". On different Windows machines, it would get stuck at a certain concurrency level. Some machines even got stuck when running two tasks concurrently.
We would like to ask for solutions or available versions.
I’ve noticed that Xcode keeps automatically adding unnecessary inputPaths and outputPaths entries to my project.pbxproj file. These outputPaths don’t seem to serve any real purpose in my project and clutter the project file, sometimes causing unnecessary merge conflicts in version control.
I’ve already checked I didn't change my project.pbxproj file, but Xcode still occasionally generates these outputPaths. I’m not using any custom build tools or plugins that should be modifying this.
One thing I’ve observed is that this issue only occurs when Xcode is open. If I close Xcode, the problem does not happen. This makes me think it might be related to how Xcode manages or updates the project file in the background.
My questions:
Is there a way to completely disable Xcode from generating these outputPaths automatically?
Are there any hidden settings, project configurations, or best practices to prevent this behavior?
Has anyone else experienced this issue, and how did you resolve it?
Any advice or insight would be greatly appreciated. Thank you!
This bundle is invalid. The IPA format requires a top-level directory named Payload, containing only a .app bundle and optional plugins in a Plugins directory. (ID: df59dbe4-17e5-4bc6-9c69-8645672320(4))
After updating to Xcode 26 Beta 4, I can no longer upload my app to App Store Connect due to a WatchKit icon validation error.
The error states:
Invalid Icon. The watch application 'YourApp.app/Watch/YourWatchApp.app' contains an icon file 'Icon Image-AppIcon-watch-1024x1024 @1x.png' with an alpha channel. Icons should not have an alpha channel.
• This file name doesn’t exist in the asset catalog or project source.
• All icon assets used in the Watch App’s AppIcon set, including the required 1024x1024 icon, were checked with sips -g hasAlpha and confirmed to not contain an alpha channel.
• Project was cleaned, derived data cleared, and archive recreated multiple times.
• This issue only began after updating to Xcode 26 Beta 4. In the previous versions, everything was ok.
Is anyone else experiencing this after upgrading Xcode to Beta 4? Any idea/workaround on how to solve this would be appreciated.
I'm an indie developer and I'm managing my builds using xcode scm (git repo) and with github.
I'm at a stage when I have to work on two different things at once on my project...
Enhancements
Feature change
At a later stage I might want the enhancements and not the feature changes, or keep both.
How should I - branch, merge and/or cherry pick on the current main branch since the Initial commit?
Good day everyone.
I have a react native app which works on dev mode on my device - Iphone 13 pro version: 18.5, but when deployed to TestFlight and installed on same device it crashes when ever I click on any TextInput. I downloaded the crash file but finding it difficult to pinpoint the problem.
I want to know what the problem is, if it's related to an installed package or code base or any other.
Any help will be appreciated!!!
Thanks.
crashlog.crash
When I build the app, a block symbol appears on the app icon in the Debug Area at the bottom. What is the reason for this?
Hello Apple Developers,
I'm currently working on building a custom HomeKit Accessory using the HomeKit ADK v6.3 and running the Remote.OpenSSL sample on a Raspberry Pi 4 (64-bit Ubuntu / Linux Kernel 6.1.21-v8+). I'm trying to pair the accessory via the MFi HomeKit ADK pairing process.
I've successfully compiled the ADK using:
The application (Remote.OpenSSL) launches correctly, and the accessory server starts as expected, broadcasting via mDNS. However, when I attempt to initiate pairing via iOS (or simulate pairing), the following error occurs:
Fault fatal error - HAPPlatformAccessorySetupLoadSetupInfo @ PAL/Linux/HAPPlatformAccessorySetup.c:93
This causes the application to crash.
Topic:
App & System Services
SubTopic:
Hardware
Tags:
Developer Tools
External Accessory
HomeKit
AccessorySetupKit