Incomputing,uClibc (sometimes written μClibc) is a smallC standard library intended forLinux kernel-based operating systems forembedded systems andmobile devices. uClibc was written to supportμClinux, a version of Linux not requiring amemory management unit and thus suited formicrocontrollers (uCs; the "u" is aLatin script typographicalapproximation - not a properromanization, which would be letter "m" - ofμ for "micro").^[3]

Development on uClibc started around 1999.^[4] uClibc was mostly written from scratch,^[5] but has incorporated code from glibc and other projects.^[6] The project lead is Erik Andersen, and the other main contributor is Manuel Novoa III. Licensed under theGNU Lesser General Public License, uClibc isfree and open-source software.

uClibc is much smaller than theglibc, the C library normally used with Linux distributions. While glibc is intended to fully support all relevant C standards across a wide range of hardware and kernel platforms, uClibc is specifically focused on embedded Linux systems. Features can be enabled or disabled according to space requirements.

uClibc runs on standard andMMU-less Linux systems. It supportsi386,x86-64,ARM (big/little endian),Atmel AVR32,Analog Devices Blackfin,Renesas/Hitachi H8 (h8300),Motorola m68k,MIPS (big/little endian),IBM PowerPC,SuperH (big/little endian),Sun SPARC, andRenesas/NEC v850 processors.

uClibc-ng^[7] is afork of uClibc announced on theOpenWRT mailing list in July 2014 after more than two years had passed without a uClibc release, citing a lack of any communication from the maintainer.^[8][9][10] At present, the original project's author no longer publishes updates, but refers to the still actively developed fork uClibc-ng for current releases.^[11]

• Karim Yaghmour; Jon Masters; Gilad Ben-Yossef; Philippe Gerum (2008).Building Embedded Linux Systems (2 ed.). O'Reilly Media. pp. 115–127.ISBN 978-0-596-52968-0.
• von Hagen, William L. (2006).The Definitive Guide to GCC, Second Edition. Berkeley, CA: APress. pp. 290–297.ISBN 1-59059-585-8.

• uClibc++ website

• 2000 software
• C standard library
• Embedded Linux
• Free computer libraries
• Free software programmed in C
• Interfaces of the Linux kernel
• Linux APIs
• Software using the GNU Lesser General Public License

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