ios - Trying To Support Bitcode With Locally Built Apple-LLVM

Question

I cloned Apple's LLVM repo from github, then I took the apple/stable/20200714 branch, and successfully built an Xcode toolchain.

Using that locally built toolchain, I built my static framework with bitcode enabled, and included that framework in my iOS app project.

When I was trying to build the app with bitcode enabled, everything was fine, until I choose to "Archive" the app, the following error is encountered:

ld: loaded libLTO doesn't support -bitcode_hide_symbols: LLVM version 11.0.1release for architecture armv7

This error only happens when I use my locally built toolchain. No error when archiving with Xcode's default toolchain.

Since I used the stable branch of the Apple-LLVM, I didn't expect the difference in the behavior.

My Xcode version is 11.5.

I kind of expected the local build of the apple-llvm toolchain to behave the same as the pre-built toolchain that’s included in Xcode.

Right now there’s a difference between the two, and I am not sure whether I missed anything.

So, Is there any difference between the toolchain on Apple’s Github and the one came with Xcode? Or is there anything specific that I have to pay attention to when I try to build the toolchain locally?

question from:https://stackoverflow.com/questions/65880966/trying-to-support-bitcode-with-locally-built-apple-llvm

Answer 1

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