Embedded C library http://uclibc-ng.org

Joakim Tjernlund 7058b3fc16 Fix bug 370. 19 gadi atpakaļ
debian 3710e0790c install the manpages that are in the docs subdir 19 gadi atpakaļ
docs 7f1fd5234f update developer verbage 19 gadi atpakaļ
extra 270bd86b4f punt _DL_FINI_CRT_COMPAT option now that 0.9.28 has been released 19 gadi atpakaļ
include 7058b3fc16 Fix bug 370. 19 gadi atpakaļ
ldso 50adcf84a2 Remove unused function. 19 gadi atpakaļ
libc 7058b3fc16 Fix bug 370. 19 gadi atpakaļ
libcrypt 4fd42eddbb fix some sign warnings pointed out by gcc-4 19 gadi atpakaļ
libintl 4203076cd1 no more cvs 20 gadi atpakaļ
libm a0ca45d467 import thumb support from jbowler in Bug 385 19 gadi atpakaļ
libnsl 4203076cd1 no more cvs 20 gadi atpakaļ
libpthread 021fb898d3 Robin Getz from blackfin.uclinux.org writes: 19 gadi atpakaļ
libresolv 4203076cd1 no more cvs 20 gadi atpakaļ
librt 99e973a956 rework dependencies so the archive is re-created only when the object files have been updated 20 gadi atpakaļ
libutil 4203076cd1 no more cvs 20 gadi atpakaļ
test 21c4912151 clean up code and make it easy to extend 19 gadi atpakaļ
utils 7e67e3cc23 add __thumb__ check 19 gadi atpakaļ
COPYING.LIB 64bc641218 Initial revision 24 gadi atpakaļ
Changelog 9acf46c0c7 Update docs for release 20 gadi atpakaļ
Changelog.full 9acf46c0c7 Update docs for release 20 gadi atpakaļ
DEDICATION.mjn3 38583d5986 Today's Toni's birthday. Seems an appropriate day to add this. 21 gadi atpakaļ
INSTALL 37c4e78b3f fix a few typos and clean up the spacing (no tabs) 20 gadi atpakaļ
MAINTAINERS 6e6fe788e8 Fix platform URLs, though I'm sure rmk has enjoyed the extra traffic.. 19 gadi atpakaļ
Makefile 08a9752c5b dont install linux/asm headers if KERNEL_SOURCE == DEVEL_PREFIX 19 gadi atpakaļ
README ece14c1a67 Remove whitespace 20 gadi atpakaļ
Rules.mak 270bd86b4f punt _DL_FINI_CRT_COMPAT option now that 0.9.28 has been released 19 gadi atpakaļ
TODO 1fbbaa0392 note the architectures which still need to be updated 19 gadi atpakaļ

README


uClibc - a Small C Library for Linux
Erik Andersen

uClibc (aka Clibc/pronounced yew-see-lib-see) is a 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. Porting applications from glibc
to uClibc typically involves just recompiling the source code.
uClibc even supports shared libraries and threading. It currently
runs on standard Linux and MMU-less (also known as Clinux)
systems with support for alpha, ARM, cris, e1, h8300, i386, i960,
m68k, microblaze, mips/mipsel, PowerPC, SH, SPARC, and v850
processors.

If you are building an embedded Linux system and you find that
glibc is eating up too much space, you should consider using
uClibc. If you are building a huge fileserver with 12 Terabytes
of storage, then using glibc may make more sense. Unless, for
example, that 12 Terabytes will be Network Attached Storage and
you plan to burn Linux into the system's firmware...

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 an unmodified
version of 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. You should, however,
carefuly review the license and make certain you understand and
abide by it strictly.


For installation instructions, see the file INSTALL.

uClibc strives to be standards compliant, which means that most
documentation written for SuSv3, or for glibc also applies to
uClibc functions. However, many GNU extensions are not supported
because they have not been ported, or more importantly, would
increase the size of uClibc disproportional to the added
functionality. There is some discussion of these differences
in the "docs" directory.

Additional information (recent releases, FAQ, mailing list, bugs,
etc.) can be found at http://www.uclibc.org/.

uClibc may be freely modified and distributed under the terms of
the GNU Library General Public License, which can be found in the
file COPYING.LIB.

Please Note:

There is an unwholesomely huge amount of code out there
that depends on the presence of GNU libc header files.
We have GNU libc compatible header files. So we have
committed a horrible sin in uClibc. We _lie_ and claim
to be GNU libc in order to force these applications to
work as their developers intended. This is IMHO,
pardonable, since these defines are not really intended
to check for the presence of a particular library, but
rather are used to define an _interface_. Some programs
are especially chummy with glibc, and may need this
behavior disabled by adding CFLAGS+=-D__FORCE_NOGLIBC

If you want to make special exceptions in your code which are
specifically for uClibc, you can make certain to include features.h,
and then have your code check for uClibc as follows:

#ifdef __UCLIBC__
do_something_special();
#endif

And most of all, be sure to have some fun! :-)
-Erik