uClibc -- a small footprint C library for embedded systems.

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(Last updated: Dec. 26, 2001)

uClibc (aka µClibc/pronounced yew-see-lib-see) is a small footprint C library for embedded Linux systems. It is much smaller then the GNU C Library, but nearly all applications supported by glibc also work perfectly with uClibc. You can actually statically link a "Hello World" application under x86 that only takes 4K -- as opposed to 200K under GNU libc.

Porting applications from glibc to uClibc typically involves just recompiling the source code. uClibc supports standard Linux systems (such as x86, strongArm, and powerpc), and also supports MMU-less (also known as µClinux) systems, such as those based on the Coldfire, dragonball, or arm7tdmi micro-controllers. If you are building an embedded Linux system and you find that glibc is eating up too much space, you should consider using uClibc instead. If you are building an ultra fast fileserver with 12 Terabytes of storage, then you probably want to use glibc . . .

uClibc is maintained by Erik Andersen and is licensed under the GNU LIBRARY GENERAL PUBLIC LICENSE. This license allows you to make closed source commercial applications using uClibc (Please consider sharing some of the money you make ;-). You do not need to give away all your source code just because you use uClibc and/or run on Linux.

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