iOS Build crashing dyld: Symbol not found

Question

Hey!

I'm building my first game for iOS using Unity. I've made and published a few games on Android. iOS is a little trickier, it seems. I generated the xCode project, build it, and it builds fine and then immediately crashes on the simulator.

I have both GoogleMobileAds and GooglePlayGames in the project. The logs read t$$anonymous$$s message:

 dyld: Symbol not found: _OBJC_CLASS_$_GSDK_GTMSessionFetcher
   Referenced from: /Users/slashg0/Library/Developer/CoreSimulator/Devices/FC590B60-F039-47F4-B81E-EF4A99D619D7/data/Containers/Bundle/Application/45238C77-AE2D-4BB5-A98D-F5AE734201E9/auradefence.app/auradefence
   Expected in: flat namespace
  in /Users/slashg0/Library/Developer/CoreSimulator/Devices/FC590B60-F039-47F4-B81E-EF4A99D619D7/data/Containers/Bundle/Application/45238C77-AE2D-4BB5-A98D-F5AE734201E9/auradefence.app/auradefence
 (lldb)

I have followed a lot of threads with similar issues

I've tried pod install manually, building from the .xcworkspace file (w$$anonymous$$ch isn't generated by default)
I've deleted pods, then installed them manually
I've tried copying GoogleOpenSource and a few other libraries, they cause build errors.

I may be overdoing the wrong t$$anonymous$$ngs here. Can anyone point out what I need to do?

[EDIT 1] Adding the Unity generated Podfile:

 source 'https://github.com/CocoaPods/Specs.git'
 install! 'cocoapods', :integrate_targets => false
 platform :ios, '82'
 
 target 'Unity-iPhone' do
 pod 'Google-Mobile-Ads-SDK', '~> 7.13'
 pod 'GooglePlayGames', '~> 5.0'
 end

Answer 1

Answer by elenzil · Dec 15, 2016 at 05:07 PM

I am using the .xcodeproj to open and build the game, I don't have an .xcworkspace file.

t$$anonymous$$s is your problem. when you do pod install, it says very clearly that you need to use the workspace, not the project. it's not joking.

The problem is that when I open t$$anonymous$$s .xcworspace file and build it from there, I get several 'not found' errors. I have also tried to find w$$anonymous$$ch files (or classes?) are missing and adding their pods. I reached a point where I was getting a 'not found' error for some files I couldn't find the pods for.

those problems need to be fixed. if you're using pods, you need to use the workspace.

0 Show 3 · Share

slashg0 · Dec 15, 2016 at 06:04 PM 0

Share

I tried working with the .xcodeproj because the documentation for the play-games-plugin-for-unity reads:

When building for iOS in Unity, a post build step is executed that runs Cocoapods and then adds the required libraries and frameworks directly to the XCode project. This is different from previous versions; you no longer need to open the workspace in XCode.

This, and a couple of YouTube tutorials that build using the .xcodeproj itself. I'm using the latest release for the plugins, maybe that is causing confusion?

elenzil slashg0 · Dec 15, 2016 at 06:19 PM 0

Share

i see. news to me. are you using other cocoapods which are not part of that ? perhaps the problem is mixing old-style and new-style cocoapods ?

slashg0 elenzil · Dec 26, 2016 at 06:31 AM 0

Share

After a few failed attempts long ago, I stopped tweaking the Podfile. I just generate the project in Unity and try (and fail) to run it. I am making no changes to the xCode project per se now.

I'm miles past my deadline and am losing business because of this.

Answer 2

Hi, I've had the same issue and managed to solve it.

I'm assuming you are trying to run the app on the simulator. The error "Expected in: flat namespace" is given when the library you are using is not available for simulator. Explained here.

So change the player setting for Target SDK under Other Settings to Device SDK, then run the Unity build.

Once you have the xCode project. The project will not build I've no idea why to solve that,

Delete everyt$$anonymous$$ng that is related to Cocoa Pods Podfile Podfile.lock and Pods folder
Create a clean PodFile (See the example below.) Need to add GoogleSignIn separately since GooglePlayGames is not referencing it correctly. You can read it more here.
run pod install
From other linker flags under Build Settings remove -Obj C
Build xCode project and run it on a real device.

 source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '9.0'
 
 target 'Unity-iPhone' do
     pod 'GooglePlayGames', '5.0'
     pod 'GoogleSignIn', '4.0.0'
 end
 
 post_install do |installer|
   installer.pods_project.targets.each do |target|
     target.build_configurations.each do |config|
       config.build_settings['ENABLE_BITCODE'] = 'NO'
     end
   end
 end

iOS Build crashing dyld: Symbol not found

2 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions