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

Bernhard Reutner-Fischer ff1aa7ce90 - make sure not to have relocs in Scrt1.o (Peter S. Mazinger) 16 yıl önce
docs 30bd4a6cc3 remove many functions which just call __ieee754_<function>, 16 yıl önce
extra 15a971616c Merge some pre-work from branch, needed by NPTL. 16 yıl önce
include c54be38040 replace yet another _dl_malloc + _dl_memset with _dl_zalloc 16 yıl önce
ldso d23c49221a ldso: performs bootstrap relocations only if required by the arch. 16 yıl önce
libc 56e1ba1b23 - fixup incomplete r24515 (fix redefinitions of posix_types for i386->x86_64 with linux >= 2.6.28) 16 yıl önce
libcrypt 1a21daadde rpc: ifdef out xdrrec_{get,put}long if int32 == long, 16 yıl önce
libintl b74c3aa1a9 - less verbose make clean 16 yıl önce
libm cd3a494e99 libm_sh: fix libm build for sh 16 yıl önce
libnsl 035ac813b4 - if ssp is enabled then make sure that __stack_chk_fail resolves 16 yıl önce
libpthread 4d624c6a94 - fix typo in r24594 16 yıl önce
libresolv 035ac813b4 - if ssp is enabled then make sure that __stack_chk_fail resolves 16 yıl önce
librt 866c320ae9 CLean librt/*.oS too (NPTL will add some). 16 yıl önce
libutil b74c3aa1a9 - less verbose make clean 16 yıl önce
test bd3adc978b test/regex/tst-regexloc.c: include ok/bad indicator in the message 16 yıl önce
utils ff1aa7ce90 - make sure not to have relocs in Scrt1.o (Peter S. Mazinger) 16 yıl önce
COPYING.LIB 751dd180c3 Update license file to Lesser GPL v2.1 19 yıl önce
COPYING.LIB.boilerplate 99eb65208a boilerplate license we use 18 yıl önce
Changelog 9acf46c0c7 Update docs for release 20 yıl önce
DEDICATION.mjn3 38583d5986 Today's Toni's birthday. Seems an appropriate day to add this. 21 yıl önce
INSTALL 37c4e78b3f fix a few typos and clean up the spacing (no tabs) 20 yıl önce
MAINTAINERS 2ca8d4fe65 Updated email address for Hans-Christian Egtvedt, AVR32 maintainer. 16 yıl önce
Makefile 7d68065a27 - add some helpful help text, as advertised. 16 yıl önce
Makefile.help 64bbe93bf4 - document environment variables used by the install_* targets. 16 yıl önce
Makefile.in 3a40407c06 - expand SUSv3_LEGACY 16 yıl önce
Makerules a0ebeb988d - fix fpclassify, signbit, isfinite, isnan, isinf macros for long double math support 16 yıl önce
README 331634d4c1 copyright update 18 yıl önce
Rules.mak ff1aa7ce90 - make sure not to have relocs in Scrt1.o (Peter S. Mazinger) 16 yıl önce
TODO 4cc4b30426 - adds several config-options to allow for turning off certain features 16 yıl önce

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