Welcome to 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 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 project uClibc-ng-test.

Latest Release

*NEWS* 1.0.19 (Codename Trappistes Rochefort 6) released 23.10.2016 *NEWS*

GPG signature:

SHA256: b3f94d67e9afcefb158a37011584e0d41ef3bd55ad72255a26abb25ad49b77a1

Get older releases and other tarballs here:


Projects using uClibc-ng:
and others.


Get the source via the following command:
git clone git://
git clone git://

Or via HTTP (can be used with a proxy):
git clone
git clone

For Git Web access you can use:

GIT is mirrored here:


If you want to discuss about uClibc-ng development, please subscribe to the following mailing list:

Or chat with us in #uclibc-ng @


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

C library Matrix


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


If you want to help the project with money to compensate costs for hosting and hardware, please use following link


Have fun!

Last modified 10 days ago Last modified on 11/24/16 00:54:34