In GCC, the code gets directly compiled to ASM.
The New Way To Compile iOS Apps - LLVMĪ few years ago, Apple decided to move to the LLVM (Low Level Virtual Machine) compiler. You upload the assembly to Apple and then your users download it and run your app. You take your code, run it through GCC, and get binary assembly (ASM) out the other side that an iPhone can run. The key point is that it uses a one-step compilation process. It was a legacy Linux-based compiler for C or Objective-C. When the iPhone was first released, the compiler that built programs was called GCC, the GNU Compiler Collection. The Old Way To Compile iOS Apps - GCC Compilation We’ll clarify that, but before we dive into that side of things, we need to talk about how code compilation on iOS used to work. You might have heard about bitcode or LLVM (Low Level Virtual Machine), but you might not know what they mean or how they affect your application.
If you see these errors in a build log and Apple rejects your App Store submission, it’s almost certainly a bitcode problem. fatal error: error in backend: Unknown specifier in datalayout string Exited with 70.error: Failed to compile bundle: /var/folders/…/.There have been a lot of Xcode updates in the past few quarters, and whenever that happens, developers start to hit errors like these: What a Bitcode Compilation Error Looks Like In this post we’ll cover bitcode compilation errors in Xcode, specifically how to spot them and what you can do to prevent them from happening. Blank Web Views Caused by Killing the Content or Networking Process.In this series, we’ll cover interesting bugs that mobile developers might come across, and we’ll provide tips and tricks for finding and fixing them. XCodeProjectGame3/Libraries/FacebookSDK/SDK/Editor/iOS/FBUnityInterface.If you would prefer to watch a video instead, you can check it out below!Īt Embrace, we help mobile companies solve their most difficult production issues. XCodeProjectGame3/Libraries/FacebookSDK/SDK/Editor/iOS/FBUnityInterface.mm:366:21: No known class method for selector 'setPushNotificationsDeviceTokenString:' XCodeProjectGame3/Libraries/FacebookSDK/SDK/Editor/iOS/FBUnityInterface.mm:344:21: No known class method for selector 'sendEventBindingsToUnity' XCodeProjectGame3/Libraries/FacebookSDK/SDK/Editor/iOS/FBUnityInterface.mm:343:21: No known class method for selector 'setIsUnityInit:' XCodeProjectGame3/Libraries/FacebookSDK/SDK/Editor/iOS/FBUnityInterface.mm:146:10: No visible for 'FBSDKLoginManager' declares the selector 'logInWithPermissions:fromViewController:handler:' It looks related to FaceBook SDK (facebook-unity-sdk-7.17.2) I am using Unity 2019.2.0f1 and can't complile on Xcode (Version 10.2 (10E125))
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