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Joseph Myers 4863355ad5 Require GCC 4.6 or later to build glibc.
As discussed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2014-10/msg00792.html>, and
continuing into November, this patch increases the minimum GCC version
for building glibc to 4.6 (there seemed to be no clear consensus for
4.7).  In particular, this allows us to use #pragma GCC diagnostic for
fine-grained warning control with -Werror (subject to establishing a
suitable policy for that use).  The documentation has a statement, as
requested, about the most recent GCC version tested for building
glibc, and I've updated <https://sourceware.org/glibc/wiki/Release> to
refer to updating that statement.  A NEWS entry is added for this
change, although previous such changes didn't get them.

Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by this patch).

	* configure.ac (libc_cv_compiler_ok): Require GCC 4.6 or later.
	* configure: Regenerated.
	* manual/install.texi (Tools for Compilation): Document a
	requirement of GCC 4.6 or later and that GCC 4.9 is the newest
	compiler verified to work.
	* INSTALL: Regenerated.
2014-11-14 18:00:34 +00:00
argp Fix __STRICT_ANSI__ -Wundef warnings 2014-03-17 16:05:23 +00:00
assert Remove redundant C locale settings. 2014-06-07 19:58:36 +00:00
benchtests benchtests: Add malloc microbenchmark 2014-11-05 14:13:00 +00:00
bits Fix -Wundef for _UTSNAME_DOMAIN_LENGTH. 2014-05-08 10:47:35 -07:00
catgets Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
conf (NEED_INETADDR, NEED_INETATON): Define to 1, not empty. 1995-09-08 20:24:57 +00:00
conform Add tests for namespace for static linking. 2014-11-12 22:45:25 +00:00
crypt crypt: don't include ufc-crypt.h multiple times 2014-06-06 18:25:31 -04:00
csu Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
ctype Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
debug Fix -Wundef warning on PAGE_COPY_THRESHOLD 2014-07-03 01:49:43 +05:30
dirent Fix __getcwd rewinddir namespace (bug 17584). 2014-11-12 16:24:16 +00:00
dlfcn Include .interp section only for libc.so 2014-09-16 22:19:22 +05:30
elf Run check-localpltk/textrel/execstack over ld.so. 2014-11-06 15:48:44 -05:00
gmon Don't use catomic functions in mcount (BZ #16912) 2014-05-06 16:30:48 +02:00
gnulib Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
grp Enumerate tests with special rules in tests-special variable. 2014-03-06 22:35:33 +00:00
gshadow Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
hesiod Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
hurd Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
iconv Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
iconvdata Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
include Fix build of C mempcpy and stpcpy. 2014-11-14 13:48:39 +00:00
inet Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
intl Fix localealias.c fgets_unlocked namespace (bug 17589). 2014-11-12 22:42:22 +00:00
io Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
libidn Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
libio Fix __get_nprocs fgets_unlocked namespace (bug 17582). 2014-11-12 22:39:36 +00:00
locale Fix locale memmem namespace (bug 17585). 2014-11-12 22:41:03 +00:00
localedata New Bhilodi and Tulu locales (BZ #17475) 2014-11-12 17:06:39 +05:30
login Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
mach Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
malloc Fix malloc_info namespace (bug 17570). 2014-11-12 22:31:38 +00:00
manual Require GCC 4.6 or later to build glibc. 2014-11-14 18:00:34 +00:00
math Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
misc Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
nis Fix unbound stack use in NIS NSS module 2014-05-12 15:17:51 +02:00
nptl NPTL: Move __libc_multiple_threads_ptr defn to nptl-init.c 2014-11-12 14:52:31 -08:00
nptl_db Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
nscd Fix qsort_r namespace (bug 17571). 2014-11-12 22:33:41 +00:00
nss Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
po Update French translation 2014-10-09 22:11:30 +10:00
posix Fix qsort_r namespace (bug 17571). 2014-11-12 22:33:41 +00:00
pwd Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
resolv Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
resource Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
rt Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
scripts Clean up gnu/lib-names.h generation (bug 14171). 2014-09-26 17:33:04 +00:00
setjmp ARM: Use movw/movt more when available 2014-10-22 14:20:35 -07:00
shadow Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
signal Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
socket Sync recvmmsg prototype with kernel usage. 2014-09-20 13:53:44 +02:00
soft-fp soft-fp: Add _FP_TO_INT_ROUND. 2014-11-04 16:34:49 +00:00
stdio-common Fix __printf_fp wmemset namespace (bug 17574). 2014-11-12 22:38:11 +00:00
stdlib Use prototype definition for __strtol. 2014-11-13 21:37:53 +00:00
streams Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
string Fix build of C mempcpy and stpcpy. 2014-11-14 13:48:39 +00:00
sunrpc Add comment about SIZE initialization in xdr.c 2014-07-10 10:33:48 +05:30
sysdeps Fix build of C mempcpy and stpcpy. 2014-11-14 13:48:39 +00:00
sysvipc Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
termios Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
time Fix tzfile.c namespace (bug 17583). 2014-11-12 16:22:51 +00:00
timezone Allow cross-building of tests 2014-09-30 15:02:41 +01:00
wcsmbs Fix __printf_fp wmemset namespace (bug 17574). 2014-11-12 22:38:11 +00:00
wctype Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
.gitattributes exempt timezone files from the no-bad-whitespace policy 2009-06-15 18:15:54 +02:00
.gitignore ignore gdb related files 2013-12-27 16:30:50 -05:00
abi-tags * abi-tags (*-.*-syllable.*): New match, with ABI value 5. 2006-01-04 17:14:58 +00:00
aclocal.m4 Make aclocal.m4 comment mention updating install.texi for autoconf version. 2014-10-31 22:44:17 +00:00
BUGS [BZ #5222] 2007-10-28 08:24:07 +00:00
ChangeLog Require GCC 4.6 or later to build glibc. 2014-11-14 18:00:34 +00:00
ChangeLog.1 * Makefile (distribute): Add ChangeLog.[0-9]. 1995-04-14 03:52:54 +00:00
ChangeLog.2 * Makefile (distribute): Add ChangeLog.[0-9]. 1995-04-14 03:52:54 +00:00
ChangeLog.3 * Makefile (distribute): Add ChangeLog.[0-9]. 1995-04-14 03:52:54 +00:00
ChangeLog.4 * Makefile (distribute): Add ChangeLog.[0-9]. 1995-04-14 03:52:54 +00:00
ChangeLog.5 * sysdeps/posix/getaddrinfo.c: Implement configuration file 2006-05-04 06:38:07 +00:00
ChangeLog.6 Update. 1997-07-22 00:10:33 +00:00
ChangeLog.7 Update. 1997-11-18 02:50:07 +00:00
ChangeLog.8 Update. Old logs are in ChangeLog.7. 1998-08-11 18:44:11 +00:00
ChangeLog.9 Update. 2000-04-28 06:14:43 +00:00
ChangeLog.10 Update. 2000-02-29 01:13:44 +00:00
ChangeLog.11 2.5-18.1 2007-07-12 18:26:36 +00:00
ChangeLog.12 2.5-18.1 2007-07-12 18:26:36 +00:00
ChangeLog.13 Update. 2002-10-03 16:37:04 +00:00
ChangeLog.14 Update. 2004-04-20 04:28:00 +00:00
ChangeLog.15 Split out ChangeLog.15 at 2.3 branch point 2005-02-16 07:34:17 +00:00
ChangeLog.16 Fix typo in name 2012-06-21 16:45:27 +02:00
ChangeLog.17 Revert "Sun agreed to a change of the license for the RPC code to a BSD-like license." 2010-06-27 19:34:03 -07:00
ChangeLog.old-ports Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-aarch64 Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-aix Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-alpha Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-am33 Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-arm Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-cris Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-hppa Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-ia64 Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-linux-generic Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-m68k Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-microblaze Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-mips Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-powerpc Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
ChangeLog.old-ports-tile Move ports/ChangeLog* files to ChangeLog.old-ports*, remove ports/ directory. 2014-04-30 10:40:29 -07:00
config.h.in ARM: Use movw/movt more when available 2014-10-22 14:20:35 -07:00
config.make.in Remove bitrotten --enable-oldest-abi (bug 6652). 2014-09-16 17:45:03 +00:00
configure Require GCC 4.6 or later to build glibc. 2014-11-14 18:00:34 +00:00
configure.ac Require GCC 4.6 or later to build glibc. 2014-11-14 18:00:34 +00:00
CONFORMANCE Move __STDC_* predefined macros from features.h to stdc-predef.h. 2012-02-22 12:53:04 +00:00
COPYING Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
COPYING.LIB Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
cppflags-iterator.mk 2004-03-11 Jeroen Dekkers <jeroen@dekkers.cx> 2004-03-14 19:13:17 +00:00
extra-lib.mk Remove --disable-versioning. 2013-09-04 15:25:42 +00:00
extra-modules.mk Update. 2004-03-08 21:31:23 +00:00
INSTALL Require GCC 4.6 or later to build glibc. 2014-11-14 18:00:34 +00:00
libc-abis A few more archs have IFUNC support. 2010-03-17 02:43:12 -07:00
LICENSES Expand LICENSES file. 2012-12-05 21:56:15 +00:00
Makeconfig Clean up gnu/lib-names.h generation (bug 14171). 2014-09-26 17:33:04 +00:00
Makefile Fix pthread.h in installed-headers list. 2014-06-13 16:39:23 -07:00
Makefile.in Remove redundant C locale settings. 2014-06-07 19:58:36 +00:00
Makerules BZ#17496: Fix gnu/lib-names.h dependency. 2014-10-31 15:07:36 -07:00
NAMESPACE Add and update many more entries. 2000-03-20 00:42:58 +00:00
NEWS Require GCC 4.6 or later to build glibc. 2014-11-14 18:00:34 +00:00
o-iterator.mk Fri Mar 17 12:58:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> 1995-03-17 18:42:51 +00:00
PROJECTS Update. 2004-10-12 06:19:23 +00:00
README Update README and NEWS for ports directory removal. 2014-06-25 12:55:21 +00:00
Rules Don't require test wrappers to preserve environment variables, use more consistent environment. 2014-06-06 22:19:27 +00:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
test-skeleton.c Fix tst-strcoll-overflow returning before timeout (BZ #17506) 2014-11-12 17:10:21 +05:30
version.h Open development for 2.21 2014-09-08 09:22:55 +10:00
WUR-REPORT * posix/unistd.h (setuid, setreuid, seteuid, setresuid): 2012-08-01 18:12:58 +02:00

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., 2000-2013, indicating that every year in
the range, inclusive, is a copyrightable year that would otherwise be listed
individually.