leiwen2025 opened a new pull request, #7809:
URL: https://github.com/apache/hadoop/pull/7809
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### Description of PR
While building Hadoop native code on the riscv64 architecture, the build
fails due to missing support for bswap operations. The standard implementation
relies on compiler intrinsics or platform-specific assembly which are not
defined for RISC-V targets.
This results in compilation errors such as:
```
Error: unrecognized opcode `bswap a4'
Error: unrecognized opcode `bswap a3'
```
Add bswap support for RISC-V can solve the problem.
### How was this patch tested?
mvn package -Pdist,native -DskipTests -Dtar
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
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