8364177: JDK fails to build due to undefined symbol in libpng on LoongArch64

[theaoqi]

Hi all,

This pull request contains a backport of commit a9f3d3a2 from the openjdk/jdk repository.

The commit being backported was authored by Ao Qi on 4 Aug 2025 and was reviewed by Phil Race, Alexey Ivanov and Erik Joelsson.

Testing:

• linux-loongarch64-zero-release native build
• linux-loongarch64-zero-fastdebug native build

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• JDK-8364177 needs maintainer approval
• Commit message must refer to an issue

Issue

• JDK-8364177: JDK fails to build due to undefined symbol in libpng on LoongArch64 (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u.git pull/61/head:pull/61
$ git checkout pull/61

Update a local copy of the PR:
$ git checkout pull/61
$ git pull https://git.openjdk.org/jdk25u.git pull/61/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 61

View PR using the GUI difftool:
$ git pr show -t 61

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u/pull/61.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back aoqi! 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]

@theaoqi 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:

8364177: JDK fails to build due to undefined symbol in libpng on LoongArch64

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 17 new commits pushed to the master branch:

• 4419ef2: 8362515: RISC-V: cleanup NativeFarCall
• 028b4ba: 8362482: [TESTBUG] serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java: System.gc() does not provide full GC
• ece596a: 8362379: Test serviceability/HeapDump/UnmountedVThreadNativeMethodAtTop.java should mark as /native
• ... and 14 more: https://git.openjdk.org/jdk25u/compare/5f2a45c3a6a28da9273d31a155883b8cb580bcdd...master

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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ 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]

⚠️ @theaoqi 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 (bde7e73f)

[theaoqi]

/approval request The backport is clean. This patch fixes a build issue with the zero build on some loongarch platforms. This patch affects a client-libs CFLAGS macro definition, which only works on LoongArch. The loongarch zero builds passed.

[openjdk]

@theaoqi
8364177: The approval request has been created successfully.

[theaoqi]

/integrate

[openjdk]

@theaoqi
Your change (at version bde7e73) is now ready to be sponsored by a Committer.

[shipilev]

/sponsor

[openjdk]

Going to push as commit 3ee05cd.
Since your change was applied there have been 22 commits pushed to the master branch:

• 282e8e2: 8360518: Docker tests do not work when asan is configured
• 999afed: 8360255: runtime/jni/checked/TestLargeUTF8Length.java fails with -XX:-CompactStrings
• e477d84: 8361180: Disable CompiledDirectCall verification with -VerifyInlineCaches
• ... and 19 more: https://git.openjdk.org/jdk25u/compare/5f2a45c3a6a28da9273d31a155883b8cb580bcdd...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev @theaoqi Pushed as commit 3ee05cd.

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

[theaoqi]

Thank you for sponsoring, @shipilev.