GNU C library 2.17 released（支持64位ARM）

1The GNU C Library
2=================
3
4The GNU C Library version 2.17 is now available.
5
6The GNU C Library is used as *the* C library in the GNU systems
7and most systems with the Linux kernel.
8
9The GNU C Library is primarily designed to be a portable
10and high performance C library.  It follows all relevant
11standards including ISO C11 and POSIX.1-2008.  It is also
12internationalized and has one of the most complete
13internationalization interfaces known.
14
15The GNU C Library webpage is at http://www.gnu.org/software/libc/ Packages for the 2.17 release may be downloaded from: http://ftpmirror.gnu.org/libc/ http://ftp.gnu.org/gnu/libc/ The mirror list is at http://www.gnu.org/order/ftp.html NEWS for version 2.17
16====================
17
18* The following bugs are resolved with this release:
19
20  1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
21  9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
22  12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
23  13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
24  13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
25  14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
26  14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
27  14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
28  14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
29  14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
30  14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
31  14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
32  14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
33  14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
34  14889, 14893, 14898, 14914.
35
36* Optimization of memcpy for MIPS.
37
38* CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
39  EMFILE has been fixed (Bugzilla #14889).
40
41* The add-on ports collection is now distributed in the "ports" subdirectory
42  of the main GNU C Library distribution, rather than separately.
43
44* Port to ARM AArch64 contributed by Linaro.
45
46* Support for STT_GNU_IFUNC symbols added for s390 and s390x.
47  Optimized versions of memcpy, memset, and memcmp added for System z10 and
48  zEnterprise z196.
49  Implemented by Andreas Krebbel.
50
51* The new function secure_getenv allows secure access to the environment,
52  returning NULL if running in a SUID/SGID process.  This function replaces
53  the internal function __secure_getenv.
54
55* SystemTap static probes have been added into the dynamic linker.
56  Implemented by Gary Benson.
57
58* Optimizations of string functions strstr, strcasestr and memmem.
59  Implemented by Maxim Kuvyrkov.
60
61* The minimum Linux kernel version that this version of the GNU C Library
62  can be used with is 2.6.16.
63
64* Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
65  powerpc POWER7.  Implemented by Will Schmidt.
66
67* New configure option --disable-nscd builds the C library such that it
68  never attempts to contact the Name Service Caching Daemon (nscd).
69  New configure option --disable-build-nscd avoids building nscd itself;
70  this is the default if --disable-nscd is used.
71
72* Improved support for cross-compilation, including cross-testing and
73  bootstrap builds without a previously built glibc.
74
75* Several testsuite tests are now able to test multiple IFUNC variants of an
76  interface, rather than just testing the one that would be chooen by
77  default.
78
79* New configure options --with-bugurl and --with-pkgversion, for
80  distributors to use to embed their bug-reporting and package version
81  information in --help and --version output.
82
83* The ttyname and ttyname_r functions on Linux now fall back to searching for
84  the tty file descriptor in /dev/pts or /dev if /proc is not available.  This
85  allows creation of chroots without the procfs mounted on /proc.
86
87* The `crypt' function now fails if passed salt bytes that violate the
88  specification for those values.  On Linux, the `crypt' function will
89  consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
90  enabled, and fail on encrypted strings using the MD5 or DES algorithm
91  when the mode is enabled.
92
93* The `clock_*' suite of functions (declared in <time.h>) is now available
94  directly in the main C library.  Previously it was necessary to link with
95  -lrt to use these functions.  This change has the effect that a
96  single-threaded program that uses a function such as `clock_gettime' (and
97  is not linked with -lrt) will no longer implicitly load the pthreads
98  library at runtime and so will not suffer the overheads associated with
99  multi-thread support in other code such as the C++ runtime library.
100
101* New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
102  sat_IN, and szl_PL.