Switch to our own builds of ancient Clang with assertions

[Endilll]

An accompanying PR for compiler-explorer/clang-builder#84

[partouf]

As a test I have attempted to build assertions-2.6.0
This build appears to have failed:

https://github.com/compiler-explorer/infra/actions/runs/14382913649/job/40330991873#step:6:2408

The build itself reached 1200/1201, then it started to install and run "Clang regression tests" and failed with this error:

    File "/root/llvm-project/llvm/tools/clang/utils/test/MultiTestRunner.py", line 100
      print '%s: %s (%*d of %*d)' % (status, tr.path, 
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  SyntaxError: Missing parentheses in call to 'print'. Did you mean print(...)?
  ninja: build stopped: cannot make progress due to previous errors.

[Endilll]

Sounds like python2 vs python3 issue

[Endilll]

https://github.com/compiler-explorer/clang-builder/blob/36a0a5d0fff05ed6cd7d576184e88dbfe3cdb34f/Dockerfile#L31

RUN bash -c "if [[ ${image} == 16.04 || ${image} == 18.04 ]]; then apt install -y -q python; else apt install -y -q python-is-python3; fi"

We have a special line for python. Am I missing something about bash that prevents it from working as intended? CC @mattgodbolt

[partouf]

Ah! Yes, I had been wanting to ask that but forgot about it. How can we ask to build with an older image version @mattgodbolt ?

[mattgodbolt]

The clang builder builds for multiple Ubuntu versions, and then we list them in infra's build somehow...I'll take a look in a bit!

[mattgodbolt]

Trying now with clang-16.04 builder and assertions-2.6.0 : https://github.com/compiler-explorer/infra/actions/runs/14404739603

[mattgodbolt]

retrying having fixed a naming thign :)

[mattgodbolt]

https://github.com/compiler-explorer/infra/actions/runs/14404739603 succeeded! @Endilll / @partouf do we have a list of things to build? :)

[partouf]

To build:

• assertions-2.6.0
• assertions-2.7.0
• assertions-2.8.0
• assertions-2.9.0
• assertions-3.0.0
• assertions-3.1.0
• assertions-3.2.0
• assertions-3.3.0
• assertions-3.4.0
• assertions-3.5.0
• assertions-3.6.0
• assertions-3.7.0
• assertions-3.8.0
• assertions-3.9.0
• assertions-4.0.0

[mattgodbolt]

I'm starting building these now.

[mattgodbolt]

To force install:

• assertions-2.6.0
• assertions-2.7.0
• assertions-2.8.0
• assertions-2.9.0
• assertions-3.0.0
• assertions-3.1.0
• assertions-3.2.0
• assertions-3.3.0
• assertions-3.4.0
• assertions-3.5.0
• assertions-3.6.0
• assertions-3.7.0
• assertions-3.8.0
• assertions-3.9.0
• assertions-4.0.0

To squash:

• assertions-2.6.0
• assertions-2.7.0
• assertions-2.8.0
• assertions-2.9.0
• assertions-3.0.0
• assertions-3.1.0
• assertions-3.2.0
• assertions-3.3.0
• assertions-3.4.0
• assertions-3.5.0
• assertions-3.6.0
• assertions-3.7.0
• assertions-3.8.0
• assertions-3.9.0
• assertions-4.0.0

[mattgodbolt]

I've piecemeal applied the changes in this PR (sorry @Endilll I should have merged this and then done that; I only needed one tiny change to your changes)

Will close as this is done; but continue to update with the status of squash/etc here. and I'll let you know when everything's rebooted etc

[mattgodbolt]

one more to go...

[mattgodbolt]

All built and squahsed. I'll be doing a roll out over the next few hours!