Problems after upgrading to Xcode 10 Build input file cannot be found

Question

I upgraded my Xcode SDK to version 10 last night and then find I cannot build    I m getting this error      Build input file cannot be found      Users call01 Library Developer Xcode DerivedData Comp-Lite-Apps-gytvmossqptokeafrddvvmnlzadk Build Products Debug-iphoneos SG11 app SG11   which did not exist before my upgrade and I m tempted to revert back but would like to stick with version 10 if I can resolve this issue

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If the error says it can t find Info plist and it s looking in the wrong path  do the following     Select your project from the navigator  then select your target Select  Build Settings  and search  plist  There should be an option called Info plist File  Change the location to the correct one

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In my case I accidentally deleted one third-party xcodeproj folder I used in my app

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None of the above worked for me  but this did     Open project in Finder  right click on your  xcodeproj file and show package contents Open project pbxproj in a text editor Find the reference to your missing file Edit path    path to file swift  to the actual location on disk and save the file  Rebuild the project

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Go to  Xcode-  File -  Project Setting  Change Build System - Legacy Build System   Clean Build and hit Run

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This worked for me   try deleting the red colored files delete the files in derived data clean the build folder then try building by using  new build system  from file- workspace settings

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Not that I did anything wrong  but I ran into this issue for a completely different reason and kinda know what caused this    I previously used finder and dragged a file into my project s directory folder  I didn t drag into Xcode  To make Xcode include that file into the project  I had to drag it into Xcode myself later again    But when I switched to a new branch which didn t have that file  nor it needed to   Xcode was giving me this error       Build input file cannot be found      Users honey Documents xp xpios powerup Models   Extensions CGSize Extension swift      I did clean build folder and delete my derived data  but it didn t work until I restarted my Xcode

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What Xcode was complaining about was a XIB file I got it working by going to Project -  Build Phases -  Copy Bundle Resources  removing the  problematic  XIB  cleaning  CMD Shift K   building and adding it back again

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I had this happen for building my unit tests  This may have happened because I deleted the example tests   I removed the Unit test bundle then re-added it as shown in the pictures below and all was well again

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Just check the path to  plist file in Build Settings of your target

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If you tried profiling  and then it didn t work  and now you cannot build  go into your Target pane  via the Project Icon   Switch to the Build Settings tab  search for PROFILE - and set CLANG USE OPTIMIZATION PROFILE to  No

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For Swift files or files that belong to the project such as  Build input file cannot be found  PATH TO FILE FILE swift This issue can happen when files or folders have been removed or moved in the project  To fix it   Go in the project-navigator  select your project  Select Build Phasestab  In Compile Sources section  check for the file s  that Xcode is complaining of  Notice that the file s  have the wrong path  and delete them by clicking on the minus icon  Re-add the file s  by clicking the plus icon and search in the project   Product  gt  Clean Build Folder  Build   You generally find these missing files in the Recovered References folder of Xcode in the project tree  look for the search bar at the bottom-left of Xcode and search for your complaining file   Deleting them from this folder can also solve the error

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File Project Settings Change Build Systems to Legacy Build Systems

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In my case  I had created a new test target and deleted the default swift file so it was left with just the info plist  Adding a new file fixed this

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open the right navigation pane where your project files exist  OR JSUT click on cmd   1 Then search for  Recovered References  Folder  open it all red files  delete them  then everything will work so fine

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For me In Xcode 10  this solution worked like a charm  Just go to the Recovered References folder and remove all files in red color and add it again with proper reference  If Recovered References folder was not found  Check for all missing files in the project  files in red colour  and try to add files references again

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I had a similar issue after upgrading to a new swift version recently  Moving files around caused my xcode project to reference items that were no longer in the project directory giving me the Error Code Build Input File Not Found   In my situation I somehow had multiple files images that were being referenced as described below   In the image above    Navigate to your Targets page  Then Click on the Build Phases tab on the top  Scroll Down to Copy Bundle Resources  Find the affected files and remove them   hit delete on them or select them and hit the minus button     It was in here that I somehow had multiple files and images that were being referenced from other folders and the build would fail as they could no longer find them  And I could not find them either  or how Xcode was still referencing them  I hope this helps someone else

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I ran into this error after renaming a file  Somehow Xcode didn t correctly rename the actual file on disk    So it wasn t able to find the file  Sometimes the files gets highlights with a red text color  At other times the Swift icon in front of the file was getting a gray overlay   The fix was simple     Look into the error and see exactly which file it s unable to find   Select the file that can t be found   Go to the  File Inspector    It s on Xcode s right navigation pane  Click on the folder icon   Select the correct file   Clean build and run it again

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I had the same issue  The problem was that I didn t have any file under the Target   Build Phases   Compile Sources  The problem was solved after I added at leas one file to Compile Sources

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I ran into this problem soon after upgrading to Xcode 10  but that was not the issue   I tried changing the build system  but that gave me a separate error that meant the same thing  Generally saying  File X can not be found    There are multiple things to check when a file can not be found    Recovered references Folder Apple does this nice thing where if it detects a reference to a file that doesn t exists it will add this reference into a group called  Recovered References     That is nice of Apple but it doesn t always work    Build Phases Compile Sources In this list  there could be meta data for a file that the project is suppose to compile  but the file does not actually exists and it s attempting to find the file at the given path  In this list it will be dimmed out  delete them and re-add them by toggling the file s target dependencies or manually removing it and dragging it in  File s Path Double check the file path that the error is printing out and the file path for the file in finder  You can easily see this by clicking on the file in Xcode and checking the  Show the file inspector  tab  the left most tab   If these paths are correct then you are good  Dimmed out files in your project that are not in recovered references or red This one pissed me off because it s not obvious about what happened  but basically if you go into finder and move a file to a different location with out updating the reference in the project it will throw the error as the file no longer exists there  The only indication I have found for that is that the file in the  Project Navigator  tab  left most tab  is very slightly dimmed  but when you go to delete this file Xcode doesn t prompt you to delete the reference or send to trash  You can fix this by deleting the file and re-adding it to the project or going to the  File Inspector  tab and click the folder icon next to the path and change it to the proper location    Either way  the error indicates that it can t find a file  switching to the old build system is a bandaid for a more concrete issue  We as developers understand that a compiler just wants an artifact to be listed at the end of a file path  Somewhere the path is not correct  We have to find where that is   My issue was resolved with item 4 listed above  Hope this helps somebody

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There is also one possibility that sometimes when you move your files to different folder and especially when you move your info plist to other folder  you need to define the location of that file  To solve this problem  simply click on your project blue icon on the top  and you will see a button in place of project name and bundle id  click on it and locate the info plist file there  clean and compile happily

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Try to switch back to the Legacy Build System  File  gt  Project Settings  gt  Workspace Settings  gt  Legacy Build System

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In my case  the file  and the directory  that XCode was mentioning was incorrect  and the issue started occurring after a Git merge with a relatively huge branch  To fix the same  I did the following steps     Searched for the file in the directory system of XCode   Found the errored file highlighted in red  i e  it was missing    Right clicked on the file and removed the file   I tried building my code again  and voila  it was successful     I hope these steps help someone out

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The above solution eventually works for me  however  I need to do some more extra steps to finally make it to compile successfully    These extra steps were required even on Xcode 9     Xcode  File -  Workspace Settings -  Build System  Legacy Build System Xcode  Product -  Clean Rotate to compile thru different emulator types  such as  iPhone 8    iPhone 8 Plus   etc    They might fail or might not   Eventually compile on  Generic iOS Device

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I know that this is an old subject  but I found the issue with xcode 12 3 and was related to an error while doing the CopyPlist of the main Storyboard during compilation  Actually  changing the build settings to  quot Legacy Build Setting quot  worked  but it is deprecated  so I discarded it because is a short term solution  Check this   With that setting  worked for me  Before I had  quot Copy plist quot

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The  quot Legacy Build System quot  solution didn t work for me  What worked it was   Clean project and remove  quot DerivedData quot   Remove input files not found from project  only references  don t delete files   Build    gt  will generate errors related to missing files   Add files again to project  Build    gt  should SUCCEED

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This worked for me in Xcode 10    Click Project icon name in your Xcode project Go to General tab Click  Choose info plist File  under Identity section Select the info Plist file Check Info tab to see if info plist was loaded successfully Build and run

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I fixed this issue this way  go to your project s Build Phases  click on project icon at the top  and then click on Build Phases   Search for your file there  If it s there  it ll be grayed out   delete it  Then clean  shift   alt   command   k   and run  Hope it helps

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Funnily  closing Xcode and reopening it might also be enough

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In my case I had a build script that generated the  app binary  Buck   The Buck build script ran in parallel with Swift Embed build step  Because the  app binary was not generated yet the Swift step would fail  In my build script I added  quot  BUILD PRODUCTS DIR  EXECUTABLE PATH quot  under  quot Output Files quot   This tells Xcode s New Build System that this script will output the app Binary and in turn Xcode will make sure to synchronize any build steps that depend on this artifact

[xcode] Problems after upgrading to Xcode 10: Build input file cannot be found

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