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Joseph Myers 0e7e69baa8 Make linknamespace tests check only relevant libraries.
This patch addresses one known caveat in the linknamespace tests: with
this patch they will now only look for definitions of symbols in
relevant libraries, meaning that librt and libpthread are not checked
for ISO C standards, XPG3 and XPG4.

In particular, this means that if __pthread_initialize_minimal is
somehow brought in for one of those standards, the definition from
libc-tls.o will be considered instead of that from libpthread, so
avoiding bringing in lots of other libpthread symbols.  This should
address some of the failures reported by Carlos in
<https://sourceware.org/ml/libc-alpha/2014-11/msg00882.html>, where
__pointer_chk_guard_local brought in __pthread_initialize_minimal.

Tested for x86_64.  The removal of one XFAIL for XPG4 actually shows
up a header bug (shm_open should not be declared for XPG4 - the
namespace issue was for symbols brought in by shm_open, which is no
longer found at all now librt isn't searched; I've filed bug 17663 for
the header bug, though it would show up eventually anyway in the
course of review of conform/ data against XPG4).

Committed.

	* conform/Makefile (linknamespace-symlist-stdlibs-base): New
	variable.
	(linknamespace-symlist-stdlibs-tests): Likewise.
	(tests-special): Append $(linknamespace-symlist-stdlibs-tests)
	instead of $(objpfx)symlist-stdlibs.
	(linknamespace-libs-isoc): New variable.
	(linknamespace-libs): Use $(linknamespace-libs-isoc).
	(linknamespace-libs-ISO): New variable.
	(linknamespace-libs-ISO99): Likewise.
	(linknamespace-libs-ISO11): Likewise.
	(linknamespace-libs-XPG3): Likewise.
	(linknamespace-libs-XPG4): Likewise.
	(linknamespace-libs-POSIX): Likewise.
	(linknamespace-libs-UNIX98): Likewise.
	(linknamespace-libs-XOPEN2K): Likewise.
	(linknamespace-libs-POSIX2008): Likewise.
	(linknamespace-libs-XOPEN2K8): Likewise.
	($(objpfx)symlist-stdlibs): Replace by
	$(linknamespace-symlist-stdlibs-tests).  Use
	$(linknamespace-libs-$*) as set of libraries.
	($(linknamespace-header-tests)): Update dependencies.  Use
	$(objpfx)symlist-stdlibs-$$std for --libsyms argument.
	(test-xfail-XPG4/sys/mman.h/linknamespace): Remove.
	* conform/linknamespace.pl: Remove comment about considering
	definitions of symbols from irrelevant libraries.
2014-11-29 01:46:56 +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 Remove TEST_IFUNC, tests-ifunc and *-ifunc.c tests. 2014-11-26 12:53:36 +00:00
bits Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
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 Make linknamespace tests check only relevant libraries. 2014-11-29 01:46:56 +00:00
crypt crypt: don't include ufc-crypt.h multiple times 2014-06-06 18:25:31 -04:00
csu powerpc: Fix missing barriers in atomic_exchange_and_add_{acq,rel} 2014-11-26 07:06:28 -05:00
ctype Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
debug Remove TEST_IFUNC, tests-ifunc and *-ifunc.c tests. 2014-11-26 12:53:36 +00:00
dirent Fix __getcwd rewinddir namespace (bug 17584). 2014-11-12 16:24:16 +00:00
dlfcn Fix dlfcn/failtestmod.c warning. 2014-11-27 16:00:08 +00:00
elf Resize DTV if the current DTV isn't big enough 2014-11-28 07:57:40 -08:00
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 Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
iconvdata Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
include Avoid warnings for unused results in nscd/connections.c. 2014-11-26 20:54:16 +00:00
inet Remove IS_IN_nscd 2014-11-24 11:41:44 +05:30
intl Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
io Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
libidn Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
libio Fix libio/bug-ungetwc1.c warning. 2014-11-27 16:01:04 +00:00
locale Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
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 Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
manual manual: fix addmntent's MT-Safety race annotation 2014-11-21 02:45:02 -02:00
math Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
misc Avoid deprecated sigblock in misc/tst-pselect.c. 2014-11-27 16:02:26 +00:00
nis Fix unbound stack use in NIS NSS module 2014-05-12 15:17:51 +02:00
nptl Resize DTV if the current DTV isn't big enough 2014-11-28 07:57:40 -08:00
nptl_db Remove IS_IN_libpthread 2014-11-24 11:41:46 +05:30
nscd Add missing include of libc-internal.h. 2014-11-27 11:07:16 +01:00
nss Fix nss/tst-nss-test1.c format warning. 2014-11-27 03:24:18 +00:00
po Update French translation 2014-10-09 22:11:30 +10:00
posix fnmatch: work around GCC compiler warning bug with uninit var 2014-11-25 14:20:53 -08:00
pwd Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
resolv Remove NOT_IN_libc 2014-11-24 15:03:45 +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 Auto-generate libc-modules.h 2014-11-19 12:16:00 +05:30
setjmp Fix warning in setjmp/jmpbug.c. 2014-11-26 00:45:19 +00:00
shadow Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
signal Remove sigvec. 2014-11-14 11:06:08 -08:00
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 stdio-common/tst-fmemopen.c format warnings. 2014-11-27 03:25:15 +00:00
stdlib Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
streams Consistently include Makeconfig after defining subdir. 2014-02-26 23:12:03 +00:00
string Don't use __warn_memset_zero_len for gcc-5.0 or newer 2014-11-27 11:15:45 +05:30
sunrpc Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
sysdeps Recognize recent x86 CPUs in string.h 2014-11-27 17:21:12 +01:00
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 Remove TEST_IFUNC, tests-ifunc and *-ifunc.c tests. 2014-11-26 12:53:36 +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 Make linknamespace tests check only relevant libraries. 2014-11-29 01:46:56 +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 (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. 2004-12-22 20:10:10 +00:00
ChangeLog.12 (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. 2004-12-22 20:10:10 +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 NOT_IN_libc 2014-11-24 15:03:45 +05:30
extra-modules.mk Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
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 Use MODULE_NAME in stap-probe instead of IN_LIB 2014-11-24 11:41:42 +05:30
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 Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
NAMESPACE Add and update many more entries. 2000-03-20 00:42:58 +00:00
NEWS Mention fix for PR 13862 2014-11-28 07:59:50 -08:00
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 Remove TEST_IFUNC, tests-ifunc and *-ifunc.c tests. 2014-11-26 12:53:36 +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
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