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1 | This directory contains the sources of the GNU C Library. | |
2 | See the file "version.h" for what release version you have. | |
3 | ||
4 | The GNU C Library is the standard system C library for all GNU systems, | |
5 | and is an important part of what makes up a GNU system. It provides the | |
6 | system API for all programs written in C and C-compatible languages such | |
7 | as C++ and Objective C; the runtime facilities of other programming | |
8 | languages use the C library to access the underlying operating system. | |
9 | ||
10 | In GNU/Linux systems, the C library works with the Linux kernel to | |
11 | implement the operating system behavior seen by user applications. | |
12 | In GNU/Hurd systems, it works with a microkernel and Hurd servers. | |
13 | ||
14 | The GNU C Library implements much of the POSIX.1 functionality in the | |
15 | GNU/Hurd system, using configurations i[4567]86-*-gnu. | |
16 | ||
17 | When working with Linux kernels, this version of the GNU C Library | |
18 | requires Linux kernel version 3.2 or later. | |
19 | ||
20 | Also note that the shared version of the libgcc_s library must be | |
21 | installed for the pthread library to work correctly. | |
22 | ||
23 | The GNU C Library supports these configurations for using Linux kernels: | |
24 | ||
25 | aarch64*-*-linux-gnu | |
26 | alpha*-*-linux-gnu | |
27 | arm-*-linux-gnueabi | |
28 | csky-*-linux-gnuabiv2 | |
29 | hppa-*-linux-gnu | |
30 | i[4567]86-*-linux-gnu | |
31 | x86_64-*-linux-gnu Can build either x86_64 or x32 | |
32 | ia64-*-linux-gnu | |
33 | m68k-*-linux-gnu | |
34 | microblaze*-*-linux-gnu | |
35 | mips-*-linux-gnu | |
36 | mips64-*-linux-gnu | |
37 | powerpc-*-linux-gnu Hardware or software floating point, BE only. | |
38 | powerpc64*-*-linux-gnu Big-endian and little-endian. | |
39 | s390-*-linux-gnu | |
40 | s390x-*-linux-gnu | |
41 | riscv64-*-linux-gnu | |
42 | sh[34]-*-linux-gnu | |
43 | sparc*-*-linux-gnu | |
44 | sparc64*-*-linux-gnu | |
45 | ||
46 | If you are interested in doing a port, please contact the glibc | |
47 | maintainers; see https://www.gnu.org/software/libc/ for more | |
48 | information. | |
49 | ||
50 | See the file INSTALL to find out how to configure, build, and install | |
51 | the GNU C Library. You might also consider reading the WWW pages for | |
52 | the C library at https://www.gnu.org/software/libc/. | |
53 | ||
54 | The GNU C Library is (almost) completely documented by the Texinfo manual | |
55 | found in the `manual/' subdirectory. The manual is still being updated | |
56 | and contains some known errors and omissions; we regret that we do not | |
57 | have the resources to work on the manual as much as we would like. For | |
58 | corrections to the manual, please file a bug in the `manual' component, | |
59 | following the bug-reporting instructions below. Please be sure to check | |
60 | the manual in the current development sources to see if your problem has | |
61 | already been corrected. | |
62 | ||
63 | Please see https://www.gnu.org/software/libc/bugs.html for bug reporting | |
64 | information. We are now using the Bugzilla system to track all bug reports. | |
65 | This web page gives detailed information on how to report bugs properly. | |
66 | ||
67 | The GNU C Library is free software. See the file COPYING.LIB for copying | |
68 | conditions, and LICENSES for notices about a few contributions that require | |
69 | these additional notices to be distributed. License copyright years may be | |
70 | listed using range notation, e.g., 1996-2015, indicating that every year in | |
71 | the range, inclusive, is a copyrightable year that would otherwise be listed | |
72 | individually. |