releng: 12.0.0 release

[arfio]

What it does

• releng: build with tracecompass-e4.40 target by default
• releng: Update e4.40 and eStaging targets to 2026-06 release
• releng: add Trace Compass 12.0.0 baseline
• releng: Update OOMPH setup file for 12.0.0

How to test

Build Trace Compass

Follow-ups

N/A

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the instructions in this template

Summary by CodeRabbit

• Chores
  • Upgraded default Eclipse target platform from 4.39 to 4.40.
  • Updated PDE API baseline to version 12.0.0.
  • Updated build/repository definitions for CDT, Eclipse 4.40 and WebTools to align with the latest release artifacts and build lines.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR advances the Trace Compass build configuration from Eclipse 4.39 to 4.40 and updates the PDE API baseline from 11.3.0 to 12.0.0. Build defaults in setup and pom files are updated, the baseline target definition is renamed and repositioned to 12.0.0, and working target definitions refresh repository URLs and sequence numbers for CDT, Eclipse, and WebTools components to 2026-06 builds.

Changes

Target Platform and Baseline Upgrade

Layer / File(s)	Summary
Default target platform and baseline configuration TraceCompass.setup, pom.xml	eclipse.target.platform variable default and Maven property are bumped from tracecompass-e4.39 to tracecompass-e4.40; PDE baseline task configuration switches from baseline 11.3.0 to 12.0.0.
Baseline target definition releng/org.eclipse.tracecompass.target/baseline/tracecompass-baseline-12.0.0.target	Baseline target name is updated to tracecompass-baseline-12.0.0; Trace Compass and Eclipse repositories are refreshed to pull from 12.0.0 and 2026-06 builds respectively.
Working target definitions releng/org.eclipse.tracecompass.target/tracecompass-e4.40.target, releng/org.eclipse.tracecompass.target/tracecompass-eStaging.target	Sequence numbers are incremented; CDT repository moves from RC2 to release (cdt-12.5.0a); Eclipse 4.40 repository switches to release build (R-4.40-202606010713); WebTools repository updates from RC1 to release (R-3.42.0-...).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• eclipse-tracecompass/org.eclipse.tracecompass#401: Updates the same releng target platform files and repository timestamps.
• eclipse-tracecompass/org.eclipse.tracecompass#402: Related PDE target definition and repository URL updates for e4.40/eStaging.
• eclipse-tracecompass/org.eclipse.tracecompass#391: Prior target-platform and baseline bump that updated setup wiring (earlier release step).

Suggested reviewers

• MatthewKhouzam
• bhufmann

Poem

🐰 The target platform hops ahead so bright,
From 4.39 to 4.40's light,
With baseline 12.0.0 in tow,
And repositories all aglow—
June builds bringing Eclipse delight! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title 'releng: 12.0.0 release' directly reflects the main changes: updating the release engineering configuration to support Trace Compass 12.0.0 baseline and switching to 2026-06 release versions.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In
`@releng/org.eclipse.tracecompass.target/baseline/tracecompass-baseline-12.0.0.target`:
- Line 2: The baseline target file tracecompass-baseline-12.0.0.target declares
sequenceNumber="1", which may be incorrect for a new baseline; run the
PDE-target tooling or consult the project's PDE target update policy to
determine the correct starting sequence number and update the sequenceNumber
attribute accordingly (e.g., bump from "1" to the policy-required value) in the
tracecompass-baseline-12.0.0.target <target ... sequenceNumber="..."> element so
it aligns with other .target files and the project’s baseline sequencing rules.
- Line 53: The repository URL set in the target file's repository location
points to a landing page that returns HTML rather than p2 metadata, so
update/validate the p2 repository URL used by
tracecompass-baseline-12.0.0.target: confirm that the chosen URL exposes p2
metadata (content.xml or content.jar), and replace the current location value
with a URL that returns valid p2 metadata (or fallback to a known-good release
repo such as the previous release train) until the 2026-06 p2 repository is
published; ensure the change is made on the repository location attribute in the
target file so target resolution succeeds.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 89678a98-6e36-4bd7-92d1-486ec228c318

📥 Commits

Reviewing files that changed from the base of the PR and between 74f53bc and 9694908.

📒 Files selected for processing (4)

• TraceCompass.setup
• releng/org.eclipse.tracecompass.target/baseline/tracecompass-baseline-12.0.0.target
• releng/org.eclipse.tracecompass.target/tracecompass-e4.40.target
• releng/org.eclipse.tracecompass.target/tracecompass-eStaging.target

✅ Files skipped from review due to trivial changes (1)

• releng/org.eclipse.tracecompass.target/tracecompass-eStaging.target

🚧 Files skipped from review as they are similar to previous changes (2)

• releng/org.eclipse.tracecompass.target/tracecompass-e4.40.target
• TraceCompass.setup

[MatthewKhouzam]

440 baby!