8378218: MSYS2 reports cygwin triplet causing bash configure failure

[tabata-d]

Hi all,

This pull request contains a backport of commit feecb042 from the openjdk/jdk repository.

The commit being backported was authored by Daishi Tabata on 20 Feb 2026 and was reviewed by Erik Joelsson.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8378218 needs maintainer approval

Issue

• JDK-8378218: MSYS2 reports cygwin triplet causing bash configure failure (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/2642/head:pull/2642
$ git checkout pull/2642

Update a local copy of the PR:
$ git checkout pull/2642
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/2642/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 2642

View PR using the GUI difftool:
$ git pr show -t 2642

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/2642.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back dtabata! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@tabata-d This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8378218: MSYS2 reports cygwin triplet causing bash configure failure

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 1 new commit pushed to the master branch:

• 0643296: 8287062: com/sun/jndi/ldap/LdapPoolTimeoutTest.java failed due to different timeout message

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @tabata-d This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (2f5d1ab4)

[tabata-d]

/integrate

[openjdk]

@tabata-d
Your change (at version 2f5d1ab) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit 818dd7f.
Since your change was applied there have been 2 commits pushed to the master branch:

• 9945500: 8377905: gcc.md included with every build
• 0643296: 8287062: com/sun/jndi/ldap/LdapPoolTimeoutTest.java failed due to different timeout message

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @tabata-d Pushed as commit 818dd7f.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.