Archiving in Xcode leads not possible with bitcode on (UnityFramework)

[JelmerV]

When I try to archive my game to send it to the app store, I get:

ld: could not reparse object file in bitcode bundle: ‘Invalid bitcode version (Producer: ‘1103.0.32.62.0_0’ Reader: ‘1100.0.33.12_0’)’, using libLTO version ‘LLVM version 11.0.0, (clang-1100.0.33.12)’ for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

When switching off bitcode for the unity framework, it works.
What is going on here?
Unity 2019.4, Xcode 11.2.1
I have no plugins and am using the following packages:

PS: why is UnityAds included!??!

[GreenTVlad_1]

I have the same issue. Thanks for your solution. I turned off bitcode and it worked for my project too. How did you guess this? Is it possible to turn off bitcode option in Unity project or this option is available only in xCode project settings?

It’s not a bug. Here is the explanation of the issue:
https://discussions.unity.com/t/741337

@Numa

This means your project contains a library that was built with a more recent version of xcode.
For example Producer: ‘1103.0.32.29.0_0’ Reader: ‘1100.0.33.17_0’
Means this particular library was built with xcode 11.03 but you are currently using xcode 11.00 to build your project

Update (or install side-by-side) xcode to be 11.03 or greater and it should build fine.

Anyway, it would be nice to understand what to expect from such solution.

[JelmerV]

Turning off bitcode is not a good solution: I found out now that you must just update Xcode and all works again

[GreenTVlad_1]

@JelmerV

Turning off bitcode is not a good solution: I found out now that you must just update Xcode and all works again

In my situation it’s not possible. I had to downgrade Xcode because main station which builds application for release is old and Xcode can’t be updated on it.

[minibonzo]

@JelmerV

When I try to archive my game to send it to the app store, I get:

ld: could not reparse object file in bitcode bundle: ‘Invalid bitcode version (Producer: ‘1103.0.32.62.0_0’ Reader: ‘1100.0.33.12_0’)’, using libLTO version ‘LLVM version 11.0.0, (clang-1100.0.33.12)’ for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

When switching off bitcode for the unity framework, it works.
What is going on here?
Unity 2019.4, Xcode 11.2.1
I have no plugins and am using the following packages:

PS: why is UnityAds included!??!

What do you mean by “switching off bitcode for the unity framework”, how do you do that, is it in unity or xcode?