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

Rob Landley 015179a2c8 sparc: fix build for linuxthreads.old 13 yıl önce
docs 4d537e8547 libm: disable tail jump trick if __SSP_ALL__ (was using wrong conditional) 14 yıl önce
extra e0b741c2cb resolver: add a dependencies for DNS resolver feature 13 yıl önce
include 331b437172 microblaze mmu/elf/shared lib support 13 yıl önce
ldso e4aa966cf2 ldso: let people disable to lookup into LD_LIBRARY_PATH 13 yıl önce
libc 015179a2c8 sparc: fix build for linuxthreads.old 13 yıl önce
libcrypt f4eebb6146 Add Makefile support for DSBT ELF. 13 yıl önce
libintl 59f3d4df3b intl, nptl_db: fix prerequisites 14 yıl önce
libm 2fbbd10ac6 libm: fix building out-of-tree 13 yıl önce
libnsl f4eebb6146 Add Makefile support for DSBT ELF. 13 yıl önce
libpthread 015179a2c8 sparc: fix build for linuxthreads.old 13 yıl önce
libresolv f4eebb6146 Add Makefile support for DSBT ELF. 13 yıl önce
librt f4eebb6146 Add Makefile support for DSBT ELF. 13 yıl önce
libubacktrace c61993f7e0 libubacktrace: fix makefile clean target 13 yıl önce
libutil f4eebb6146 Add Makefile support for DSBT ELF. 13 yıl önce
test 01d4f7b456 tests: ignore new inet test 13 yıl önce
utils 1155493454 ldd: take LD_LIBRARY_PATH into account 13 yıl önce
.gitignore a032a65870 mass sync with glibc nptl 14 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 58a0daa6a5 add MULTILIB_DIR: Path component for libdirs 14 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 00ebae02f6 fix compilation of linuxthreads for sparc 15 yıl önce
Makefile 105ceb0fdc always define CONFIG_SHELL 15 yıl önce
Makefile.help b9055a68dd config: add support for <custom>_defconfig 13 yıl önce
Makefile.in b9055a68dd config: add support for <custom>_defconfig 13 yıl önce
Makerules 7682323a3a Merge remote-tracking branch 'origin/master' into prelink 13 yıl önce
README 331634d4c1 copyright update 18 yıl önce
Rules.mak 2fa7315f34 bump version to 0.9.33-git 13 yıl önce
TODO 70dd77fa63 TODO: update 13 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