|  | 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 2.6.32 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: | 
|  |  | 
|  | aarch64*-*-linux-gnu | 
|  | alpha*-*-linux-gnu | 
|  | arm-*-linux-gnueabi | 
|  | hppa-*-linux-gnu	Not currently functional without patches. | 
|  | i[4567]86-*-linux-gnu | 
|  | x86_64-*-linux-gnu	Can build either x86_64 or x32 | 
|  | ia64-*-linux-gnu | 
|  | m68k-*-linux-gnu | 
|  | microblaze*-*-linux-gnu | 
|  | mips-*-linux-gnu | 
|  | mips64-*-linux-gnu | 
|  | powerpc-*-linux-gnu	Hardware or software floating point, BE only. | 
|  | powerpc64*-*-linux-gnu	Big-endian and little-endian. | 
|  | s390-*-linux-gnu | 
|  | s390x-*-linux-gnu | 
|  | sh[34]-*-linux-gnu | 
|  | sparc*-*-linux-gnu | 
|  | sparc64*-*-linux-gnu | 
|  | tilegx-*-linux-gnu | 
|  | tilepro-*-linux-gnu | 
|  |  | 
|  | If you are interested in doing a port, please contact the glibc | 
|  | maintainers; see http://www.gnu.org/software/libc/ for more | 
|  | information. | 
|  |  | 
|  | 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 http://www.gnu.org/software/libc/. | 
|  |  | 
|  | 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 http://www.gnu.org/software/libc/bugs.html 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 | 
|  | individually. |