Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Petro Karashchenko 11dc1df189 libc: improve libc dependencies in case of LIBM_NONE
Currently the code for strtof, strtod and strtold is in the list
of files to compile unconditionally, but when trying to compile
kernel with toolchain without libm support (LIBM_NONE=y) compilation
fails because code refers math.h

Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
2025-12-14 17:57:27 -03:00
.github
arch netdev_upperhalf: convert Kconfig to variable 2025-12-14 10:01:22 +08:00
audio
binfmt
boards netdev_upperhalf: convert Kconfig to variable 2025-12-14 10:01:22 +08:00
cmake
crypto
Documentation usbhost: cdcacm exit wq after copy all received data 2025-12-14 10:37:53 -03:00
drivers drivers/can/can.c: fix broken O_NONBLOCK 2025-12-14 15:42:35 -05:00
dummy
fs
graphics
include netdev_upperhalf: convert Kconfig to variable 2025-12-14 10:01:22 +08:00
libs libc: improve libc dependencies in case of LIBM_NONE 2025-12-14 17:57:27 -03:00
mm
net
openamp
pass1
sched sched/misc: correct coredump log format 2025-12-12 14:54:05 +01:00
syscall
tools
video
wireless
.asf.yaml
.codespell-ignore-lines usbhost: cdcacm exit wq after copy all received data 2025-12-14 10:37:53 -03:00
.codespellrc
.editorconfig
.gitignore
.gitmessage
.pre-commit-config.yaml
.yamllint
AUTHORS
CMakeLists.txt
CONTRIBUTING.md
INVIOLABLES.md
Kconfig
LICENSE
Makefile
NOTICE
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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.