Changes/LLVM-17

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LLVM 17

This is a proposed Change for Fedora Linux.
This document represents a proposed Change. As part of the Changes process, proposals are publicly announced in order to receive community feedback. This proposal will only be implemented if approved by the Fedora Engineering Steering Committee.

Summary

Update all llvm sub-projects in Fedora Linux to version 17.

Owner

• Name: Tom Stellard
• Email: <tstellar@redhat.com>

Current status

• Targeted release: Fedora Linux 39
• Last updated: 2023-06-05
• [<will be assigned by the Wrangler> devel thread]
• FESCo issue: <will be assigned by the Wrangler>
• Tracker bug: <will be assigned by the Wrangler>
• Release notes tracker: <will be assigned by the Wrangler>

Detailed Description

All llvm sub-projects in Fedora will be updated to version 17, and there will be a soname version change for the llvm libraries. Compatibility packages clang16, llvm16, and lld16 will be added to ensure that packages that currently depend on clang and llvm version 16 libraries will continue to work.

Other notable changes:

• The Clang Resource Directory will be moved from /usr/lib64/clang/17/ to /usr/lib/clang/17/ this is the location of clang's internal headers and runtime libraries like libomp and compiler-rt. Package owners of packages that read or write this directory will need to update their packages when rebuilding against/with LLVM 17. The %clang_resource_dir helper macro can be used to make this transition smoother, and packages are encouraged to update to use this macro even before the LLVM 17 update.

• Along with the Clang Resource Directory change, compiler-rt will now install its libraries into /usr/lib/clang/16/lib/$TRIPLE/ instead of /usr/lib64/clang/16/lib/

Scope

• Proposal owners:

• Other developers:

• Release engineering: #Releng issue number

• Policies and guidelines: N/A (not needed for this Change)

• Trademark approval: N/A (not needed for this Change)

• Alignment with Community Initiatives:

Contingency Plan

• Contingency mechanism: (What to do? Who will do it?) N/A (not a System Wide Change)
• Contingency deadline: N/A (not a System Wide Change)
• Blocks release? N/A (not a System Wide Change), Yes/No

Documentation

N/A (not a System Wide Change)