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

Vineet Gupta afab56958f ARCv2 ISA support 9 лет назад
docs d6f8248cc3 update arc4random from bug #885 12 лет назад
extra afab56958f ARCv2 ISA support 9 лет назад
include afab56958f ARCv2 ISA support 9 лет назад
ldso afab56958f ARCv2 ISA support 9 лет назад
libc afab56958f ARCv2 ISA support 9 лет назад
libcrypt 78b154a95b libcrypt: return NULL on unsupported salt 9 лет назад
libintl 59f3d4df3b intl, nptl_db: fix prerequisites 14 лет назад
libm 41537a770b buildsys: fix IS_IN_lib* 10 лет назад
libnsl c8eb6b4c7a libnsl,libresolv: do not include unneeded features.h 12 лет назад
libpthread a952a1dd2b nptl: compile pt-vfork in ARM-mode 9 лет назад
libresolv c8eb6b4c7a libnsl,libresolv: do not include unneeded features.h 12 лет назад
librt 294079b3fd librt: fix mq_timed{send,receive} return instructions 11 лет назад
libubacktrace 41537a770b buildsys: fix IS_IN_lib* 10 лет назад
libutil 266bdc1f62 Replace FSF snail mail address with URLs 12 лет назад
test 516c45013d test: Adjust passed options 9 лет назад
utils 4990404906 ldd: Add ARC support 11 лет назад
.gitignore 30c4dd1f3a .gitignore: Ignore dump files 12 лет назад
COPYING.LIB 751dd180c3 Update license file to Lesser GPL v2.1 19 лет назад
COPYING.LIB.boilerplate 99eb65208a boilerplate license we use 18 лет назад
Changelog-2010 53eb441800 Changelog: complete old data and cycle 10 лет назад
DEDICATION.mjn3 38583d5986 Today's Toni's birthday. Seems an appropriate day to add this. 21 лет назад
INSTALL ae14cd49a8 buildsys: s/CROSS/CROSS_COMPILE/g 13 лет назад
MAINTAINERS 00ebae02f6 fix compilation of linuxthreads for sparc 15 лет назад
Makefile 105ceb0fdc always define CONFIG_SHELL 15 лет назад
Makefile.help 648e744e3d buildsys: document savedefconfig in help 11 лет назад
Makefile.in 0676373756 unistd: allow to turn off getopt_long 10 лет назад
Makerules 343f6b8f1f buildsys: fix IS_IN_lib* for out-of-tree builds 9 лет назад
README 331634d4c1 copyright update 18 лет назад
Rules.mak afab56958f ARCv2 ISA support 9 лет назад
TODO 8a3747a9d8 test commit 11 лет назад

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 LESSER 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 Lesser 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