Build service could not create build operation - xcode

My project worked fine, but after I changed to the last commit Xcode is showing me the strange error message:
Build service could not create build operation: unknown error while handling message: unknownSession
It indexes the files for a few hours and after that is finished the build fails also because of this strange bug.

I got this same error and closing Xcode, deleting derived data, and trying again fixed the issue for me.
I did not have to deleting the code or anything like that as mentioned in the other answer. Just deleting derived data.

For myself, I solved it by deleting the code from my pc completely and fetching it from my GitHub repository again. When I build now it works. The code has not changed but I guess Xcode has some strange bugs.

Related

Unable to Resolve Build File: Reference to Missing Target with GUID

I recently forked an iOS library on GitHub to add support to it for the Swift Package Manager. Here's the repository: https://github.com/skelpo/mapbox-gl-native-ios
When I add it to a completely new iOS app and try to build it, I get this error:
Unable to resolve build file: XCBCore.BuildFile (The workspace has a reference to a missing target with GUID 'PACKAGE-TARGET:Mapbox')
I've found posts for similar errors, such as this one, but the reason for the build file failing to resolve is different.
I have tried the usual cleaning the build folder, deleting derived data, and restarting Xcode, but that hasn't helped.
What is the reason for this specific resolution failure, and how would I fix it?
I ran into a similar problem after upgrading to Xcode 12 recently, and found a fix for my case.
A major hint that led to the solution came from Aaron's May 3, 2019 answer on this page.
What fixed it for me was to select the root of the Xcode project, and change the Project Format from "Xcode 11.0-compatible" to "XCode 12.0-compatible".

Build fails with "Command failed with a nonzero exit code"

When I try to build my app with Xcode, an error interrupts the build process:
Command CompileStoryboard failed with a nonzero exit code
Sometimes, it shows this error instead:
Command CompileSwift failed with a nonzero exit code
I have New Build System turned on.
What can I do to fix this?
Closing Xcode for me didn't have an effect. Instead, I cleaned the project using CommandShiftK.
I also found another reason: I had a storyboard reference to another storyboard which I had removed. The quick fix was deleting this.
I also facing same issue in xcode 10 and tried all the solutions provided but nothing working.
Then I deleted all the files and folders of the following folder :
~/Library/Developer/Xcode/DerivedData
and it worked like a charm.
When you stop building a project when the compiler is in the middle of something "important", this error could appear. In that case, building the project again and letting it finish normally makes this error disappear.
This is a known issue with Swift 4.2 and Xcode 10. I found an article here that fixed it for me: https://github.com/Yummypets/YPImagePicker/issues/236
In short, go to your projects build settings, and add a user defined setting named SWIFT_ENABLE_BATCH_MODE and set its value to NO.
Previously, I tried each of the methods suggested here (rebuild, exit Xcode, clean and rebuild, purge Derived Data files). None of them worked.
Once I added the user define build setting per the article, Swift then told me the true error. In my case, it was a missing }, but it could be any number of problems.
I encountered this error when I was upgrading my project from Swift 4 to 5.
I first updated all my pods to their latest versions. When I built, some pods showed this error.
The following steps resolved this issue for me:
Removed all pods from Podfile
Executed pod install to remove all installed pods
Executed pod deintegrate to remove support for CocoaPods
Deleted Podfile.lock and .xcworkspace from my project so no
CocoaPods anymore
Now my project is a pure Xcode project
Opened my project from the regular .xcodeproj file
Changed Swift Version of my project to Swift 5
Cleaned the project (cmd+shift+K)
Quitted Xcode
Restored all pods to my Podfile
Executed pod install to reintegrate CocoaPods and add my pods
Opened the project from the .xcworkspace file
Cleaned and rebuilt
Some old pods that were still using Swift 4.0
(SlideMenuControllerSwift in my case) were set to Swift 5.0, caused
many build errors in their code. I corrected it back to Swift 4.0
by opening the Pods project and selecting its target.
Cleaned again, rebuilt.
Now I have only errors in my own project code related with difference in Swift version I made. My job now is to fix them.
This error happened to me when I forgot to change entity Properties before creating NSManagedObject subclass. Solved by:
delete Entity+CoreDataClass.swift and Entity+CoreDataProperties.swift.
under "class" of the entity model inspector, change "module" to Current Product Module and "codegen" to Manual/None.
recreate the NSManagedObject.
I had the error Command LinkStoryboards failed with a nonzero exit code, and found that I was using a reference to a non-existent storyboard. I had recently changed the name of a storyboard file, so changing the reference from the 'old' name to the 'new' name solved it for me.
You may not have exactly the same error as me, but an easy way to find a more detailed explanation of the error is to:
Show the issue navigator (while the build time error is showing)
Click the error:
Then, you should see more about your error:
I hope this helps. Please, I am aware that I am answering from experience of a different error than this question was asked about, but I believe this advice should help you conquer similar problems!
For me cleaning the project (Command + Shift + K) and restarting xCode worked for me
If you have multiple targets, where two or more targets have files with the same name, check the target membership of those files in Files inspector. The error occurs when multiple instances of the equally named file have set the target membership for the same target.
Since this issue looks to have dozens of possible solutions and the root cause could be very vague, I'll throw my situation into the ring. Half of my pods were failing with some sort of CompileSwiftSource failure, but only on archive. I was still able to build for device and simulator just fine. I tried a lot (if not all) of the solutions suggested here with no luck. One of the pods had a slightly different error before the CompileSwiftSource error so I went to updating and trying to fix that single pod. It was the Cache library for iOS which hadn't been updated in a while. There was a fork that resolved the issue with updating to Xcode 10.2 that I was able to update to and after that, all of the other issues took care of themselves. So look for a single outlier in your pods if you're getting a bunch of them erroring out and start there.
Switching to the legacy build system fixed the issue for me
In my case, I was clean build folder then restart my mac then it's work.
I had the JSONwebtoken pod installed and that was causing issues. I needed to delete the CommonCrypto folder that is in the JSONWebtoken pod folder. Here is a ->link<- explaining the issue. This started happening in Xcode 10.
In my case it was about having a file named Location. after some digging I find out that it was about having two file with the same name (weird). Cause I don't, however, it's been solved by removing the file and adding another file with a different name.
filenames are used to distinguish private declarations with the same name
This can also occur when you have two swift files with the same name. For example, two ContentView.swift files
In my case, I used too complicated initializations inside a class extension. It suddenly broke my build.
class MyClass { }
extension MyClass {
static var var1 = "", var2 = "", var3 = "", var4 = "", ...., var20 = ""
}
Resolved:
class MyClass { }
extension MyClass {
static var var1 = "",
static var var2 = "",
static var var3 = ""
static var var4 = "", ....,
static var var20 = ""
}
In my case it was empty assets catalog, when I delete it everything was fine again.
Command CompileSwift failed with a nonzero exit code
This error happens when you are migrating your code from Xcode 9 to Xcode 10+. It due to any class name is conflicting with existing apple classes. For Example: State, Event etc.
So first change the class/structure name if any existing in your code like "State" to "StateDetail"
If Info.plist is added in target, remove tick mark from it so it will not copy app bundle (Latest Xcode10 security reason).
Select Info.plist file and uncheck under "Target Membership" in right side Identity inspector
And build code again!!!
In my case, the problem was that I assigned a .swift class to the viewController in the storyboard, while the project was Objective C.
I tried a lot of the options discussed here.
Delete and reinstall pods
Clean Build Folder
Delete Derived Data
Add SWIFT_ENABLE_BATCH_MODE and set its value to NO
Restarting Xcode and Recompiling
Restarting iMac and Recompiling
set Compilation Mode to Incremental
Changed build settings: SWIFT_COMPILATION_MODE = singlefile and SWIFT_OPTIMIZATION_LEVEL = "-O"
Nothing worked. I'm using Xcode Version 11.0 beta (11M336w).
Finally I downloaded a fresh copy and replaced the one I had previously installed. It was the same exact version. That did the trick.
I got this error while trying to run my unit tests in a submodule. What I have done is:
Change the simulator => Clean the project => Build the project => Run unit tests.
After this, my unit tests ran without any issue.
I have the issue like that and my solution is change a little thing in Build Settings:
SWIFT_COMPILATION_MODE = singlefile;
SWIFT_OPTIMIZATION_LEVEL = "-O";
it work to me
Alright, I was having the same problem with Xcode 10. I usually use a storyboard for every view, that way if someone is helping it's easier to fold code in. I needed to make one of the view on one storyboard the initial view Controller.
In my case it was renaming a file to an existing file in other folder(Group) by mistake, just rename it to what it was then the error disappeared
The targets should be specified with related data such as appicon
For me the problem was that on my Podfile I didn't put use_frameworks!. I just uncomment that line, run pod install on the terminal again. And it got fixed.
It was commented since the app was entirely made on Objective-C. Since the app now uses Swift I had to make that change on the Podfile
I had the same error Restarting Xcode and Recompiling Fixed the issue for me.
I got the same error when linking separate storyboards. The error, "Command CompileSwiftSources failed with a nonzero exit code." is shown because I simply forgot to set the view controller inside the second storyboard that I am linking as 'an initial view controller'.
In my use case I had used the function "Refactor to Storyboard" in Xcode 13. It created the new refactored story board fine but failed to add it to bundle resources.
So my fix was to:
Select the target project in Xcode Navigator
Choose the build phases tab
Expand Copy Bundled Resources to see if new storyboard was added. If not, just add it to the list and rebuild.
My app was having Notification Service Extension, and was using Xcode 11. The Extension doesn't have anything to do with pods.
After 1-2 years, I have taken that project into my new m1 chip mac with Xcode 13. But the compilation was failing and showing me the error in pods.
I tried to remove and add all pods, tried clean etc all possible available answers available on internet. Almost spent 4-5 hours to make it run, but nothing worked.
Final Solution that worked:
I removed, notification service extension from the project, its target etc too. And then tried to run the app. Amazingly it worked. After that, i added that extension again(by creating new extension and putting the same code again), and everything is working perfectly fine.
I am still surprised that, was that issue with extension or with pods. But finally it worked for me.
Hopefully, this answer might resolve someone's issue and you can save enough time.

Xcode internal errors when testing with swift

I started having peculiar problems when using XCode.
Whenever I try to write test with swift, XCode shows an internal error and all the code turns white.
This happens even if I remove the #testable annotation from the code.
I tried reinstalling XCode, but this did not help.
The code builds just fine so I don't have a clue where the problem might lie.
I'm unable to properly develop tests this way, my modules are not recognised, I have no error checking or code completion.
Here is a screenshot of how the problem looks:
Would love to get any guidance on this issue...
So I guess for now there is no good solution to this problem.
It seems to be caused by crashes of SourceKit.
Fortunately the problem is not solved (partially) on my end.
I decided to make this answer a compilation of different things to try when experiencing this:
Restart - try restarting both Xcode and the PC
Clean the project (shift-command-K)
Build your code, I noticed that sometimes it occurs when you just have unrelated build errors somewhere in your project - make sure it builds
Delete the DerivedData folder rm -Rf ~/Library/Developer/Xcode/DerivedData/, but you can also delete it from Xcode
Delete the cache rm -Rf ~/Library/Caches/com.apple.dt.Xcode - Currently this seems to help the most
I will edit and add more solutions if I find any

Packaging error when switching to arm64 (arm5 was OK)

I just plugged in a new iPhone 6, created a provisioning profile and then I launched the app I'm developing on the device. It compiled fine, but at linking stage it errored out with:
ProcessProductPackaging
...
error: class '(null)' of input object does not respond to either selector writeToFile:options:error: or writeToFile:atomically
I cannot find any information of what that is. I do not get any specific code reference to relate it to. Did anyone experience this?
Personally I was able to solve this issue by rebuilding the project a second time. I think I was only experiencing it after revoking and requesting a certificate.
Odd for it to jump at me and disappear though.
I just restarted Xcode then the error was disappeared
I've tried turning the "Automatically managed signing" off and on again, then the issue disappeared. Note: rebuilding didn't help for me, cleaning either.
I removed an external library and related code I had and it's now working.
I just changed some provisioning setting and then restarted the xcode afterwards the error was disappeared and archived and then uploaded successfully
Rebuilding the project does the job for me. Actually I was making changes in capabilities while Xcode was building that makes build failed.
The error occurred after I made manual changes to the Xcode .entitlements and Info.plist files: I removed some entries. None of the above mentioned solution attempts worked for me. Every try to create an archive failed.
The solution was to go to Xcode's Capabilities section and switched everything on and off again.
I had the same problem specifically on an App Extension we used for Push Notifications, and I was using Automatically manage signing but it seems the App Groups in capabilities were failing, so I just had to make sure the App Groups were retrieved correctly and this fix it.
Also if you have .entitlements files, and you have App Groups there, make sure they are the same you are using in the capabilities configuration.
Restarted XCode and enabled and disabled to Automatically manage signing

Compile Failed Storyboard

Output in Log:
ibtoold(1642,0x7fff78b64960) malloc: error for object 0x7fbf38056a08: incorrect checksum for freed object - object was probably modified after being freed.
set a breakpoint in malloc_error_break to debug
Command /Applications/Xcode.app/Contents/Developer/usr/bin/ibtool failed with exit code 255
The setup:
The project was received through git. I had tried to compiled the project, but got the eror. Nothing was changed before, but used the new version of Xcode 4.3 instead of 4.2.
Things I tried:
Clean and Rebuild
Create new project and import files and sources into new project
Restart Computer & Xcode
Conclusion
There were people that have similar problems, but not the exact problem. Please forgive me if I don't see the obvious problem, I can't figure out what is the cause of the problem.
This is a reported bug already filed with Apple. I have tried duplicating the issue and the error occurred randomly when creating iPad storyboards only (for me). My iPhone storyboard has 30+ views with zero issues. Makes it pretty tough to complete a Universal app as of right now. It appears to be a memory issue since I can make the error occur by simply removing the last view I added (view contains a lot of UILabels also)
YMMV but closing and opening the Xcode project resolved the issue for me. It occurred after I git stash popped some storyboard changes.

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