The next-generation of Zephyr's POSIX reference design.
posix-next is an out-of-tree Zephyr RTOS module that serves as a staging tree for upstream POSIX API features. It tracks ahead of what is upstream and aims to improve the cadence of feature development and testing. In terms of confromance, posix-next targets the POSIX.1-2018 release (Issue 7), although there is some support for POSIX.1-2024 (Issue 8).
Key goals:
- Portability — run POSIX applications on Zephyr with minimal changes.
- Conformance — track the full POSIX option groups and work toward PSE51/52/53 profiles.
- Linux parity — validate behavior against Linux using
native_simand real hardware.
| Resource | Link |
|---|---|
| Guides & overview | cfriedt.github.io/posix-next |
| Getting started | Getting Started |
| API reference (Doxygen) | Doxygen HTML |
| POSIX symbol search | Symbol search |
| Option groups | Option groups |
| Conformance status | Conformance |
See the full Getting Started guide for workspace setup, SDK installation, and sample applications.
Contributions are welcome! Please open an issue or pull request on GitHub.
This project is licensed under the Apache License 2.0.