Undefined symbols for architecture i386 OBJC CLASS SKPSMTPMessage referenced from error

Question

I have imported framework for sending email from application in background i e  SKPSMTPMessage Framework  Can somebody suggest why below error is shown  Undefined symbols for architecture i386     OBJC CLASS   SKPSMTPMessage   referenced from    objc-class-ref in ConfirmController o    kSKPSMTPPartContentTransferEncodingKey   referenced from    - ConfirmController sendEmail  in ConfirmController o    kSKPSMTPPartMessageKey   referenced from    - ConfirmController sendEmail  in ConfirmController o    kSKPSMTPPartContentTypeKey   referenced from    - ConfirmController sendEmail  in ConfirmController o  ld  symbol s  not found for architecture i386 collect2  ld returned 1 exit status   Source from which framework is taken -  Locking the Fields in MFMailComposeViewController  Update   Answer Just drag and drop folder over the project and click copy   Thats it select project check box and target check box as well

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In my case the pod update didn t update the project somehow  So I had to do it by myself  adding the MBProgressHud to OtherLinkerFlags

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In addition to what Allan did  adding missing classes  I followed  emdog4 s solution and added the Core Data library by going to Build Phases in Xcode and under the  Link Binary with Libraries  clicking on the   and selecting the  CoreData framework   This sorted out my error

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None of the above answer solved my issue  I got this same error when after I upgraded Xcode to 8  I went to Target --  Build Phases --  The Link Binary With Libraries and delete the framework that caused the problem and re added it and all the errors went away  Hope this will help others

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Is your framework compiled for armv x    It looks to me like it s compiled for i386  which code won t run on an iOS device   Or else it s compiled for armv x  and you re trying to run it on the simulator  which is i386 code   Make sure  using the build settings Akshay displayed above  that your framework is correctly compiled for the chip you re going to run it on

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When I encountered the same problem  i forgot to add  compiled version of library with extension  a    Normally we add the library of the imported project in Target Dependency in Build Phases but we forget to add  compiled library  in Link Binary with Libraries in Build Phases

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Check that all your bundle resources are copied in build phase

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It s possible you re using a library that is only compiled for REAL hardware   For example  if you re using a Bluetooth library like the Zephyr HxM Smart  it probably won t compile on the simulator  and is only meant to run on real devices

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You can get this type of error if your class   m file is not listed under the  Compile Sources  step of the  Build Phases  tab of your target  Normally Xcode does this for you  but sometimes it loses the plot and you need to add the  m file manually   To do this   TargetSettings -  Build Phases -  Compile Sources -  add your  m class  - Build and Run

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I had a similar error with NSManagedObject and it was because I was using Core Data but was missing the Core Data framework in Build Phases - Link Binary With Libraries  as some others have answered

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I didnt add the  -all load -lstdc    to Other Linker Flags in the build setting and I was able to launch the sim without error but I did not get MonkeyTalk log output when launched and the a previous script that I wrote that used to connect now showed the play button as disabled  The output of the MT IDE showed as  Connection set to iOS Simulator   but not able to select the run play button   The original project had  ObjC -all load  in the Other Linker Flags and when I appended the  -all load -lstdc    along with it I got the error message this post is about  When I removed the  ObjC -all load  and only added the  -all load -lstdc    the project built  but still no monkey talk log out put as confirmation in the console

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I discovered this HIGHLY misleading message while trying to upgrade to the new Google Analytics library   In my case the problem was having TWO CONFLICTING COPIES of the library  They were in different folders but both were listed in my App s Library Build Paths  under Build Settings    Moving all the deprecated library files out of the folder ended up doing the trick and made the mysterious error messages go away

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In my case it was a bit different  In the Prefix Header there was a define missing   ifdef DEBUG     define TWDLog fmt       NSLog     n s n  fmt     PRETTY FUNCTION        VA ARGS     else     define TWDLog       endif   So search for PROJECTNAME-Prefix pch and check if it has something missing in both projects

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I also met this issue and I fixed it by checking if both compile source and link binary with library contained all the file library framework I required

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Yeah this is related to what allen said    look  for TargetMembership in Utilities section  of the source file  there is a checkbox that associates that file to a project  Checking this solved this issue  for me too

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Change in active architecture worked for me  One of my lib was using i386   In build settings    change Build Active Architecture Only to Yes from NO  It worked for me  Hope it helps to others as well

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Product    Clean did the trick for me

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On mine  I was using Cocoapods for an Augmented Reality project and what I found out was that when you implement cocoapods and open your project s  workspace  you end up with the Xcode Project target and those Pods target you implemented inside the same file  What was happening was that some of the  m were being used by both  After I removed the duplicated ones for the Xcode target at Build Phases    Compile Sources  it worked fine

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try this one last   so I tried all the suggestions on this page   none worked   The way my problem started was by following the steps in this tutorial that teaches how to link static libraries  With my sample project the instructions worked fine   but then on my actual project I started getting the error above    So what I did was go through each step of the said tutorial and built after each step   the offending line turned out to be this one  adding -all load to build settings-  other linker flags  it turns out that this flag was recommended once upon a time to link categories to static libraries   but then it turned out that this flag was no longer necessary Xcode 4 2     same goes for the -force load flag   which was also recommended in other posts

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Just enable the  Build Active Architecture Only  option  in PROJECT    Build Settings    Build Active Architecture Only    Yes    remember to check if they are also enabled in each target

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i have the same problem with 7 errors   when i add PSTCollectionviewcontroller  The one solution for this problem is check your    xcode --  build phases-- compile sources   here add your all   m  files   I hope you this post will help users in future

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for me the issue turned out to be missing frameworks  Once I added em  it worked

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Try remove the framework  clean project  add it back and compile   Or  Remove the class which has been added by xcode in compile source  clean project  add it back then build

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Check the Valid Architectures  amp  Build Active Architecture only properties

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I got this message when I drag and dropped some source files from another project  When I deleted them and then added them via the  Add Files     from the File menu  it built without the error

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Adding what worked for me in case others have the same issue and end up here   I had an older project that had the CLANG ENABLE MODULES setting set to No   After hours of frustration I compared to a working project and found I had Enable Modules Set to no under my LLVM build settings   Setting this to Yes solved my problem and the app builds fine   Project Settings -  Build Settings -  search for  Modules  and Update Enable Modules  C and Objective-C  to YES

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Also could be that you re missing to link against a Binary Library  check Build Phases in your Targes add required libraries and then  Product   Clean  Product   Build  That must work too

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You can get this type of error if you add third party libraries in your project that require native frameworks not included in your project   You need to look inside the  h and  m files of your newly added library and see what frameworks it requires  then include those frameworks in your project  Target   Build Phases   Link Binary With Libraries

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When I encountered the same problem as this      Undefined symbols for architecture i386        OBJC CLASS   SKPSMTPMessage  referenced from    objc-class-ref in ConfirmController o   It turned out that I just forgot to add framework  It was QuartzCore framework to be exact

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Ran into a similar issue with IOS 6  Was able to solve it by adding storekit framework to the  Link Binary with Libraries  in the build phases section   Now  it works like a charm

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if you are using cocoapods make sure your target s build settings contain   inherited  in the other linker flags section

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I got the same issue  And I add 2 framework I need to Build Phases  Hope this help

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Answer is you just drag and drop folder over the project and click copy

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If you importing some other project in xcode and if current and import project both have same files in Compiler source then just remove same file in current project in  Build phase  settings  It worked for me

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Remember That you can put some macro in any view controller which is calling the files you ve already deleted   The app will not show any errors until you build your app  it will throw the error in compilation phase in  o files   Remember to delete any MACRO that s calling to files you ve already deleted   Thanks

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I had this issue when I opened the same project twice  only one project was the original and the other was cloned from a git url    Product     Clean  solved the problem

[ios] Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error

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