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

Peter S. Mazinger 8852947daa Convert configuration to new build system 17 years ago
debian f674b612fb HAVE_SHARED depends on \!ARCH_HAS_NO_LDSO, remove BUILD_UCLIBC_LDSO and replace the dependencies w/ HAVE_SHARED 17 years ago
docs 2a42a28b98 It was pointed out to me that http://www.uclibc.org/copyright.txt 17 years ago
extra 8852947daa Convert configuration to new build system 17 years ago
include 8f33ced1a8 sync with glibc and Paul Brook says: fix posix_memalign prototype by dropping __attribute_malloc__ 17 years ago
ldso 9dae26d562 change to Lesser GPL 2.1 as pointed out by psm 17 years ago
libc 44d9901982 Integrate locales into new build system, move everything locale related to extra/locale, as download, unpack, locale_data.o 17 years ago
libcrypt 0d0b54076d import license updates from glibc 17 years ago
libintl 72c0f6a2d6 Depedencies corrected (less make oldconfig/headers), rerunning make remakes only headers 17 years ago
libm 69841e625b update license 17 years ago
libnsl 2d09adf5a9 update license 17 years ago
libpthread 52e08a6b9c Correct PTINC path and remove hardcoded include for internals.h 17 years ago
libresolv 72c0f6a2d6 Depedencies corrected (less make oldconfig/headers), rerunning make remakes only headers 17 years ago
librt 72c0f6a2d6 Depedencies corrected (less make oldconfig/headers), rerunning make remakes only headers 17 years ago
libutil 164c1d8ffb import 32/64 bit compat support from glibc 17 years ago
test b27c9f6514 Remove TOPDIR, update copyright 17 years ago
utils eddd4169f1 Same for utils, renamed install_utils to utils_install to avoid conflict when added to top Makefile.in 17 years ago
COPYING.LIB 751dd180c3 Update license file to Lesser GPL v2.1 17 years ago
Changelog 9acf46c0c7 Update docs for release 18 years ago
Changelog.full 9acf46c0c7 Update docs for release 18 years ago
DEDICATION.mjn3 38583d5986 Today's Toni's birthday. Seems an appropriate day to add this. 19 years ago
INSTALL 37c4e78b3f fix a few typos and clean up the spacing (no tabs) 18 years ago
MAINTAINERS 6e6fe788e8 Fix platform URLs, though I'm sure rmk has enjoyed the extra traffic.. 18 years ago
Makefile ba31c6c463 Remove TOPDIR 17 years ago
Makefile.in 8852947daa Convert configuration to new build system 17 years ago
Makerules 8852947daa Convert configuration to new build system 17 years ago
README ece14c1a67 Remove whitespace 18 years ago
Rules.mak 3c45ffd272 Add header dependency to be used as prerequisite for the all objects 17 years ago
TODO 1fbbaa0392 note the architectures which still need to be updated 17 years ago

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