Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Xiang Xiao 144d9dff02 libc: add paths.h, sys/ttydefaults.h and termios IUTF8
Add commonly required POSIX/BSD interfaces that portable command-line
utilities expect but that were missing from the C library:

- include/paths.h: _PATH_DEFPATH and the other standard default paths.
- include/sys/ttydefaults.h: BSD default control-character and terminal
  flag definitions.
- include/termios.h: define the IUTF8 input flag.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2026-09-15 14:51:15 +02:00
.github ci: apply Depends-On dependencies to the memory report 2026-09-15 08:47:25 -03:00
arch arch/arm/imx9, arch/arm64/imx9: Release eDMA lock before callbacks 2026-09-15 08:41:58 -03:00
audio audio: limit the buffer count guard to shared ring requests 2026-08-05 07:58:53 +02:00
binfmt libs/libc/elf, binfmt: Describe the GOT by base and size, not by index. 2026-09-08 16:31:16 -03:00
boards boards/qemu-intel64: add citest configuration 2026-09-15 18:33:47 +08:00
cmake cmake: fix undefined function name in parse args error messages 2026-09-11 21:15:22 +08:00
crypto
Documentation ci: apply Depends-On dependencies to the memory report 2026-09-15 08:47:25 -03:00
drivers drivers/sensors/sensor: cancel fetch watchdog on close to fix UAF 2026-09-15 09:41:11 +08:00
dummy
fs fs/aio: raise the default AIO_LISTIO_MAX so LTP keeps passing 2026-09-14 17:12:49 -03:00
graphics graphics/nxterm: consume SGR escape sequences 2026-08-23 10:46:02 +08:00
include libc: add paths.h, sys/ttydefaults.h and termios IUTF8 2026-09-15 14:51:15 +02:00
libs libc/atexit: honor registrations made during exit processing 2026-09-14 18:52:46 -03:00
mm mm/pgalloc: support 32 KB and 64 KB page sizes 2026-09-10 23:28:43 +08:00
net net/tcp: add configurable delayed ACK threshold 2026-09-08 09:00:19 +08:00
openamp cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
pass1
sched sched: fix 1-byte overflow in prctl(PR_GET_NAME) 2026-09-14 18:51:55 -03:00
syscall fs: rename PSEUDOFS_SOFTLINKS to FS_LINKS 2026-08-27 01:12:33 +08:00
tools Documentation, tools/ci: Say where the NXFLAT tools actually come from. 2026-09-13 18:29:40 -03:00
video video/videomode: Fix EDID parsing and formatting of video mode dumps 2026-08-29 11:09:11 -03:00
wireless wireless/bluetooth: fix inverted MTU cap in bt_conn_send() 2026-08-30 10:48:18 -03:00
.asf.yaml
.codespell-ignore-lines
.codespellrc Revert "zbus: Add linker support and documentation for the zbus port" 2026-08-30 10:45:19 -03:00
.editorconfig
.gitignore boards/risc-v/eic7700x: Adopt the common board layout. 2026-08-19 01:40:57 +08:00
.gitmessage
.pre-commit-config.yaml
.yamllint
AUTHORS AUTHORS: add Jorge Guzman 2026-08-25 08:43:13 -04:00
CMakeLists.txt cmake: reconfigure when .config changes 2026-09-14 18:40:45 -03:00
CONTRIBUTING.md
INVIOLABLES.md
Kconfig include/nuttx: Add link-time iterable sections infrastructure 2026-08-27 01:04:05 +08:00
LICENSE
Makefile
NOTICE
README.md
ReleaseNotes

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Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.

Getting Started

First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.

Documentation

You can find the current NuttX documentation on the Documentation Page.

Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.

The old NuttX documentation is still available in the Apache wiki.

Supported Boards

NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.

Contributing

If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.

License

The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.