Xcode 6 1 Missing required architecture X86 64 in file

Question

In Xcode 6 1   I am getting error for iPhone 6  iPhone 5s iOS 7 1  which says       Undefined symbols for architecture x86 64          OBJC CLASS   ClientAuthenticator   referenced from        objc-class-ref in AppDelegate o ld  symbol s  not found for architecture x86 64 linker command failed with exit code 1   This is what I have for architecture settings perspective     Architectures   Standard Architectures armv7  arm64  -   ARCHES STANDARD    Base SDK   Latest iOS 8 1     Valid Architectures  arm64  armv7  armv7s    IOS Deployment Target  iOS 6 0   Recently I updated my OS to Yosemite and Xcode from 6 0 to 6 1  I have searched on Stack Overflow for this question which refer to Xcode 5 1 and tried all the given solutions  but nothing has worked    Update - I tried the changes as suggested in the answer  but I still keep getting the error which says  Missing required architecture X86 64    On further investigation I found that the file ClientAuthenticator o which is from my library is not getting built for X86 64 architecture and probably that is the issue  I am looking how it can be built for x86 64    My new question is what is the difference between arm64 and x86 64  More of it seems like the difference between just the architecture manufacturer  but basic 64-bit architecture remains same

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One other thing to look out for is that XCode is badly handling the library imports  and in many cases the solution is to find the imported file in your project  delete it in Finder or from the command line and add it back again  otherwise it won t get properly updated by XCode  By XCode leaving there the old file you keep running in circles not understanding why it is not compiling  missing the architecture etc

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I use lipo command to combine two built static libraries manually   EX  I have a static library libXYZ a  to build   I run build for Generic iOS Device and got Product in Debug-iphoneos     lipo -info Debug-iphoneos libXYZ a Architectures in the fat file  Debug-iphoneos libXYZ a are  armv7 arm64   Then I run build for any iOS Simulator and got Product in Debug-iphonesimulator     lipo -info Debug-iphonesimulator libXYZ a Architectures in the fat file  Debug-iphonesimulator libXYZ a are  i386 x86 64   Finally I combine into one to contain all architectures     lipo -create Debug-iphoneos libXYZ a Debug-iphonesimulator libXYZ a -output libXYZ a   lipo -info libXYZ a Architectures in the fat file  libXYZ a are  armv7 i386 x86 64 arm64

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If you are building a universal library and need to support the Simulator  x86 64  then build the framework for all platforms by setting Build Active Architecture Only to No

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Here s a response to your latest question about the difference between x86 64 and arm64    x86 64 architecture is required for running the 64bit simulator   arm64 architecture is required for running the 64bit device  iPhone 5s  iPhone 6  iPhone 6 Plus  iPad Air  iPad mini with Retina display

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Setting the build active architectures only to No fixed this problem for me

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I run into exactly the same problem and was following this tutorial https   github com jverkoey iOS-Framework faq  The way that I made this work is after putting into the scripts into your Aggregate s Build Phase  before you compile  make sure you compile it using an iphone simulator  I used iPhone6  instead of IOS Device   which will give me 2 slices  armv7 and x86 64  then drag and drop it into new project is working fine for me

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My solution was connect my iPhone 6  build on it and I got the project running successfully   Because I was building for iPhone 6 Simulator

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Following changes you have to make that s it change architecture into armv7 and remove others   -

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The first thing you should make sure is that your static library has all architectures  When you do a lipo -info myStaticLibrary a on terminal - you should see armv7 armv7s i386 x86 64 arm64 architectures for your fat binary   To accomplish that  I am assuming that you re making a universal binary - add the following to your architecture settings of static library project -     So  you can see that I have to manually set the Standard architectures  including 64-bit   armv7  armv7s  arm64  of the static library project     Alternatively  since the normal  ARCHS STANDARD now includes 64-bit  You can also do   ARCHS STANDARD  and armv7s  Check lipo -info without it  and you ll figure out the missing architectures  Here s the screenshot for all architectures -    For your reference implementation  project using static library   The default settings should work fine -    Update 12 03 14 Xcode 6 Standard architectures exclude armv7s  So  armv7s is not needed  Yes  It seems that the general differences between armv7 and armv7s instruction sets are minor  So if you choose not to include armv7s  the targeted armv7 machine code still runs fine on 32 bit A6 devices  and hardly one will notice performance gap  Source If there is a smarter way for Xcode 6 1   iOS 8 1 and above  - please share

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Many use the build scripts found either here    http   www raywenderlich com 41377 creating-a-static-library-in-ios-tutorial  or here    https   gist github com sponno 7228256 for their run script in their target   I was pulling my hair out trying to add x86 64  i386  armv7s  armv7  and arm64 to the Architectures section  only to find lipo -info targetname a never returning these architectures after a successful build   In my case  I had to modify the target runscript  specifically step 1 from the gist link  to manually include the architectures using -arch   Step 1  Build Device and Simulator versions xcodebuild -target   PROJECT NAME  ONLY ACTIVE ARCH NO -configuration   CONFIGURATION  -sdk iphoneos  BUILD DIR    BUILD DIR   BUILD ROOT    BUILD ROOT   xcodebuild -target   PROJECT NAME  -configuration   CONFIGURATION  -sdk iphonesimulator -arch x86 64 -arch i386 -arch armv7 -arch armv7s -arch arm64 BUILD DIR    BUILD DIR   BUILD ROOT    BUILD ROOT

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If you are having this problem in react-native projects with one of the external library  You should remove the project and use react-native link  lt package-name gt  again  That should solve the problem

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I tried using all the above  nothing worked in my case  I used the SumUp library which was causing this issue  I fixed it by   Removing the -ObjC parameters  all of them   in previous SumUp libs they required to have the -ObjC populated with parameters to make it work  however the latest version  xc v4 0 1 at the time of my answer here   the docs says remove it   That still didn t fix the issue  I was still seeing errors all over the place hence coming to this thread     however  after playing around with the settings the following fixed it   Going into  quot Build Settings quot  for your project and then changing  quot Build Active Architectures Only quot  to  quot YES quot   cleaned  Rebuilt  no errors  Finally      I hope this helps for people using SumUP integration  it took the whole day to find out    Cheers  H

[ios] Xcode 6.1 Missing required architecture X86_64 in file

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