LLVM-15 ABI incompatibility between rocky 9.2 and 9.3

Rocky Linux Help & Support
1

Hi Support,
There seems to be an ABI incompatibility between the binary of libLLVM-15.0.7.so found on rocky-9.2 (llvm-libs-15.0.7-1.el9.x86_64) and on rocky-9.3 (llvm15-libs-15.0.7-5.el9.x86_64). The former brings with it some c++ runtime symbols, versioned for llvm (@@LLVM_15) whereas the latter doesn’t.

In practice, we have some binaries built against llvm-15 on rocky-9.2 failing to run on rocky-9.3. For now, and before we upgrade to a more recent version of llvm, I can workaround the issue but I’m curious to know if that was reported already and if so, what was the recommended approach.

Thanks

2

Welcome to the forums!

llvm15 is not provided by Rocky Linux, it is provided by EPEL.

[root@cm02 ~]# dnf info llvm15
Last metadata expiration check: 0:20:47 ago on Wed 30 Apr 2025 09:58:04 PM MST.
Available Packages
Name         : llvm15
Version      : 15.0.7
Release      : 5.el9
Architecture : x86_64
Size         : 11 M
Source       : llvm15-15.0.7-5.el9.src.rpm
Repository   : epel
Summary      : The Low Level Virtual Machine
URL          : http://llvm.org
License      : Apache-2.0 WITH LLVM-exception OR NCSA
Description  : LLVM is a compiler infrastructure designed for compile-time, link-time,
             : runtime, and idle-time optimization of programs from arbitrary programming
             : languages. The compiler infrastructure includes mirror sets of programming
             : tools as well as libraries with equivalent functionality.

Since it is part of EPEL and you’re having issues with it, what I would do is file a bug report at the red hat bugzilla against Fedora EPEL 9 to get some attention on it.

Before you make your bug report though, I would suggest trying to reproduce your issue on Rocky Linux 9.5 (as that is the current supported version) and/or CentOS Stream 9. If they’re reproducible, then it may be worth the bug report.

3

The issue remains in 9.5. I think the problem is with the 9.2 build of llvm, which we’re stuck with for now.
Thanks for your help, I’ll follow up with the suggested link.