Linker command failed with exit code 1 - duplicate symbol TMRbBp

Question

Since I ve updated to Xcode 8 1 I can t archive and also not run in Release mode  in debug mode its working   The error is that there are several  duplicate symbols for architecture arm64  and all are  duplicate symbol   TMRbBp   Whats that

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I had similar issues with Version 9 2  9C40b   the solution is  0  Close Xcode 1  Open project folder in terminal 2  pod update 3  open   4  open project by clicking Project xcworkspace

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I had removed files from Compile Sources in Build Phases in Targets  I added main m and it worked

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I had similar kind of problem when I added a framework to my project  I have resolved the issue by removing the framework and again adding the framework to the project by dragging and dropping the framework file to the projects frameworks folder and selecting the Copy items if needed option

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I got this error due to deletion of some files  For me simply cloning my project worked

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It seems to be a bug in Swift  See discussion on Apple developers portal  It is said to be fixed in Xcode version that is about to be released  But for now there is temporary workaround   Go to your target Build Settings and set Reflection Metadata Level flag to None

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I ran into this problem recently creating a new project and adding some pods  AlamoFire specifically  to the project   Troubled with it a couple hours or so recreating the project  it was new  several times  Tried all the methods here and no luck   Eventually I figured out that it was because XCode V10 1 was also opening the old project file along with the new pod-created workspace when I opened the workspace via command line  open myProject xcworkspace  when I reopened the project after doing  pod install   Closing all projects before exiting XCode before I did my  pod install  fixed everything for me

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For those that can t get the Thorax s answer to work  what I did was I closed out Xcode  ran pod update on my command line and then reopened the  xcworkspace file  After doing that  I was able to build and run the project   I am using the Firebase Cocoapod and Xcode version 9 1

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If you re using Ionic and the Push and Console plugins that s the problem  Remove the cordova console plugin  which is deprecated  and the error will disappear   The linker error is saying that a library is duplicated which is  in fact  true because the console plugin is already in cordova-ios 4 5   It took me a couple of hours to figure this out

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Had the same problem in Xcode 10 1 and was able to resolve it  In path Project Target  gt  Build Setting  gt  No Common Blocks  I changed it to No

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close you project then open xcode go to file -  open search your project and open it   this worked for me

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1 Close your project Completely quit Xcode  2 Go to your project location there you will find two files in you root folder with varying extensions  Appname xcodeproj and Appname xcworkspace  Now open your project by Double clicking on file with the extensions xcworkspace     Appname xcworkspace      Yourproject will open in xcode  Now run your project again   If you pay close attention when installing your pods firebase makes it clear to open your project with your-project xcworkspace after installing pods firebaseIOS Setup     cd your-project directory    pod init   Add to Podfile  pod  Firebase Core   And finally         pod install       open your-project xcworkspace   Dont forget to add firebase to your AppDelegate

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In my case    Select your project  In my case i have 2 targets  Go to Build Phases Compile Sources  Check if the number of items on each targets is the same  mine was different  Add the missing file   Remove the duplicated file   Problem Solved

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I faced the same problem with archiving on Xcode 8 1   X Code Version  Version 8 2 1  8C1002   The following fix worked on Mar 2019  1  Go to Project  amp  Select your Project    2  Select Build Settings -      Search for  Enable Bitcode  Set option as  NO      3  Most of version will fix this issue  for few other XCode version try this option also      Search for  Reflection Metadata Level  Set option as  NONE

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Don t double click Project xcodeproj to start your xcode project   Instead  close your project and open the xcworkspace   File - gt  Close Workspace  File - gt  Open - gt  Search your project folder for Project xcworkspace   All my errors are gone

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Surprisingly  in some occasions  simply cleaning the product worked for me    Product Clean  Shift Cmd K  Product Clean Build Folder  Alt Shift Cmd K    Quick fix to try before looking at other solutions

[xcode8.1] Linker command failed with exit code 1 - duplicate symbol __TMRbBp

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