Unable to build Xcode Project: clang error: linker command failed

Question

I have a Unity project which I have successfully built for Android without issue. When trying to build for iOS I am encountering an issue once the project is in Xcode.

Unity compiles without any errors and creates an Xcode project.

Upon opening the Xcode project I have NO simulators available. I can get these simulators by selecting ios in the Supported Platforms section, at which point simulators become available - originally Supported Platforms is set to iphoneos . This seems extremely odd behaviour to me, and suggests something larger going wrong.

After getting a simulator to select I get the following error when trying to compile/run/build:

ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

The full error is available on Pastebin (too large to post directly on here):

https://pastebin.com/3fYR8fE3

I'm really at a loss on what I can do. I have tried a number of things, including:

• Building from Unity as Debug and Release
• Building from Unity with 'Symlink Unity Libraries' on and off
• Building from Unity with .Net 3.5 and .Net 4.* flavours
• Manually adding the libiconv.2.dylib file in the linked frameworks tab as the .tbd equivalent
• Setting the target minimum version of iOS to 9.0 (negates the need for libiconv.2.dylib entirely)

I am using latest versions of everything:

• Unity 2018.2.17f1
• Xcode 10.1

Answer 1

It seems like you have the library il2cpp built for another architecture, have you tried to change your target's "Build Settings > Build Active Architectures Only" to "No"? However I made some researches and it seems that Unity for iPhone doesn't deploy on simulator. It only works on device or in the Unity editor. Check this link out