Welcome to uClibc-ng!

uClibc-ng - Embedded C library

What is it?

uClibc-ng is a small C library for developing embedded Linux systems. It is much smaller than the GNU C Library, but nearly all applications supported by glibc also work perfectly with uClibc-ng.

Porting applications from glibc to uClibc-ng typically involves just recompiling the source code. uClibc-ng supports shared libraries and threading. It currently runs on standard Linux and MMU-less (also known as uClinux) systems with support for Aarch64, Alpha, ARC, ARM, AVR32, Blackfin, CRIS, FR-V, H8/300, HPPA, i386, IA64, LM32, M68K/Coldfire, Metag, Microblaze, MIPS, MIPS64, NDS32, NIOS2, OpenRISC, PowerPC, Sparc, SuperH, X86_64 and XTENSA processors. Alpha, FR-V, HPPA, IA64, LM32 and NIOS2 are experimental and need more testing.

Beginning with 1.0.20, the test suite is split off into its own git repository uClibc-ng-test.

Latest Release

1.0.22 (Codename Brugse Zot) released 01.02.2017


GPG signature: http://downloads.uclibc-ng.org/releases/1.0.22/uClibc-ng-1.0.22.tar.xz.asc

SHA256: f2004c85db8e07e9f1c2e8b7c513fa7c237bc9f9685d8e1bfc89535b8a85449b

Projects using uClibc-ng

and others.


Get the source via the following command:

  • git clone git://uclibc-ng.org/git/uclibc-ng
  • git clone git://uclibc-ng.org/git/uclibc-ng-test

Or via HTTP/HTTPS (can be used with a proxy):

GIT is mirrored here:


  • You can chat with us via IRC #uclibc-ng @ irc.freenode.net
  • You can subscribe to the developer mailinglist and sent an e-mail to devel@uclibc-ng.org
  • If you have any comments, patches or criticism you can also send directly an e-mail to wbx at uclibc-ng dot org


uClibc-ng is a spin-off of uClibc (from Erik Andersen) from http://www.uclibc.org. Our main goal is to provide regulary a stable and tested release to make embedded system developers happy.


Thanks to following companies or people for hardware donations:

  • Arcturus Networks Inc. - Blackfin + Coldfire Development Boards
  • Cadence Design Systems, Inc. - Xilinx Kintex 7 FPGA KC705 incl. Daughterboard
  • Andes Technology Corporation - FPGA Development Board for NDS32
  • Soldrun Ltd. - Clearfog ARM Board
  • Rob Wehrli - Hitachi EDOSK2674 H8S development board and t-shirt


If you want to help the project with money to compensate costs for hosting and hardware, please use following link https://www.paypal.me/wbx

Have fun!