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This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.  The current
GNU/Hurd support requires out-of-tree patches that will eventually be
incorporated into an official GNU C Library release.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	hppa-*-linux-gnu	Not currently functional without patches.
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.

If you are interested in doing a port, please contact the glibc
maintainers; see for more

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
and contains some known errors and omissions; we regret that we do not
have the resources to work on the manual as much as we would like.  For
corrections to the manual, please file a bug in the `manual' component,
following the bug-reporting instructions below.  Please be sure to check
the manual in the current development sources to see if your problem has
already been corrected.

Please see for bug reporting
information.  We are now using the Bugzilla system to track all bug reports.
This web page gives detailed information on how to report bugs properly.

The GNU C Library is free software.  See the file COPYING.LIB for copying
conditions, and LICENSES for notices about a few contributions that require
these additional notices to be distributed.  License copyright years may be
listed using range notation, e.g., 1996-2015, indicating that every year in
the range, inclusive, is a copyrightable year that would otherwise be listed
6 hours ago Massimeddu... Fix misspelled yesexpr/day/abday/mon/abmon/date_fmt... master
7 hours ago Rafal Luzynskilocaledata/locales/lg_UG: Fix some comments.
8 hours ago Akhilesh KumarAdd/Fix country_isbn for France
9 hours ago Akhilesh KumarAdd country_name and country_post, and country_isbn...
25 hours ago Mike FABIANAdd int_select to many locales
28 hours ago Akhilesh KumarAdded int_select international_call_prefixes
28 hours ago Akhilesh KumarFix int_select international_call_prefixes
45 hours ago Adhemerval... Update sparc ulps
47 hours ago Adhemerval... alpha: Fix clone exit syscall argument passing (BZ...
47 hours ago DJ DelorieFix cast-after-dereference
2 days ago Mike FABIANAdd country_name to iu_CA locale
2 days ago Akhilesh KumarFix country_post "Country Postal Abbreviations"
2 days ago Akhilesh KumarFix consistency in country_isbn in various locales...
2 days ago H.J. Lui386: Test memmove_chk and memset_chk only in libc...
2 days ago H.J. LuDon't add stack_chk_fail_local.o to libc.a [BZ #21740]
2 days ago Szabolcs Nagy[AArch64] Update dl-procinfo for new HWCAP flags in...
5 months ago glibc-2.25 The GNU C Library ============...
11 months ago glibc-2.24 The GNU C Library ============...
17 months ago glibc-2.23 The GNU C Library ============...
23 months ago glibc-2.22 The GNU C Library ============...
2 years ago glibc-2.21 The GNU C Library ============...
2 years ago glibc-2.20 The GNU C Library ============...
3 years ago glibc-2.19 The GNU C Library ============...
3 years ago glibc-2.18 The GNU C Library ============...
4 years ago glibc-2.17 The GNU C Library ============...
5 years ago glibc-2.16-ports-merge libc and ports repositories merged...
5 years ago glibc-2.16.0 The GNU C Library ============...
5 years ago glibc-2.16 The GNU C Library ============...
5 years ago glibc-2.16-tps Translation project snapshot for...
5 years ago glibc-2.15 glibc 2.15 release
5 years ago glibc-2.14.1 glibc 2.14.1 release
6 years ago glibc-2.14 Tag 2.14 release
4 hours ago hjl/pie/static
6 hours ago master
40 hours ago hjl/pr21744/master
46 hours ago hjl/pr21752/master
47 hours ago hjl/ifunc/x86
2 days ago hjl/pr21666/2.25
3 days ago hjl/pr21740
8 days ago linaro/2.23/master
9 days ago release/2.24/master
9 days ago release/2.25/master
10 days ago hjl/pr12189
11 days ago hjl/ifunc/master
12 days ago zack/build-many-improvements
12 days ago zack/jda-hppa-patch
12 days ago hjl/cet/property
2 weeks ago hjl/pr21609/master
Cached version (2799s old)
 NaCl   glibc 
glibc/pb-stable.git Petr Baudis' queue of bugfixes for stable... 6 years ago
glibc/nacl-glibc.git Port of glibc to Google Native Client (NaCl) 7 years ago
glibc/history.git Unaltered CVS history 8 years ago