Cirrus-CI: bump Clang versions to 17 and 18

[emaste]

Summary

Clang/LLVM 17 is currently the in-tree default compiler, and Clang/LLVM 18 is coming soon. Use the former as the default CI toolchain and make the latter available for manual invocation.

[dim]

No objections from me :)

[emaste]

Use 16 and 17 for now, 18 gave me pkg: No packages available to install matching 'llvm18-lite' have been found in the repositories. Will replace 16 with 18 later.

[jlduran]

In D44162#1007556, @emaste wrote:

Use 16 and 17 for now, 18 gave me pkg: No packages available to install matching 'llvm18-lite' have been found in the repositories. Will replace 16 with 18 later.

I'll try to remember next quarter. Still running the tests here.

[brooks]

In D44162#1007556, @emaste wrote:

Use 16 and 17 for now, 18 gave me pkg: No packages available to install matching 'llvm18-lite' have been found in the repositories. Will replace 16 with 18 later.

I can MFH llvm18, but I'll probably want to wait until the full release any day now.

[jlduran]

It is worth noting that building with clang 18 currently fails (https://api.cirrus-ci.com/v1/task/5600331233492992/logs/build_world.log), I imagine this will be ironed out as we go along.

[dim]

In D44162#1007615, @jlduran_gmail.com wrote:

It is worth noting that building with clang 18 currently fails (https://api.cirrus-ci.com/v1/task/5600331233492992/logs/build_world.log), I imagine this will be ironed out as we go along.

Yeah this is https://github.com/llvm/llvm-project/pull/75748, which I pulled into the llvm-18-update branch. But I don't know if it is in the llvm18 port.

[jlduran]

In D44162#1007618, @dim wrote:

In D44162#1007615, @jlduran_gmail.com wrote:

It is worth noting that building with clang 18 currently fails (https://api.cirrus-ci.com/v1/task/5600331233492992/logs/build_world.log), I imagine this will be ironed out as we go along.

Yeah this is https://github.com/llvm/llvm-project/pull/75748, which I pulled into the llvm-18-update branch. But I don't know if it is in the llvm18 port.

Thank you for the insight! The port has the patch, but it is not yet in base. Manually applying it and llvm/llvm-project@966d564 allows us to move forward, but it still fails (https://api.cirrus-ci.com/v1/task/6599169498939392/logs/build_world.log). I'll follow the recommendation, and wait until 18 is officially out and in-tree.