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Zack Weinberg cb765808fb Installed-header hygiene (BZ#20366): Simple self-contained fixes.
Some headers did not include all of their prerequisite headers.

	* rpcsvc/nislib.h: Include rpcsvc/nis.h.
	* sysdeps/unix/sysv/linux/netrose/rose.h:
	Include sys/socket.h and netax25/ax25.h.

<endian.h> only defines BYTE_ORDER, BIG_ENDIAN, LITTLE_ENDIAN,
etc. under __USE_MISC; glibc's headers should use __BYTE_ORDER,
__BIG_ENDIAN, __LITTLE_ENDIAN, etc. instead.

	* inet/netinet/icmp6.h, inet/netinet/ip6.h
	* resolv/arpa/nameser_compat.h:
	Use __BYTE_ORDER etc. instead of BYTE_ORDER etc.

sys/types.h only conditionally defines caddr_t and clockid_t.

	* sysdeps/unix/sysv/linux/sys/quota.h:
	Use __caddr_t instead of caddr_t.
	* sysdeps/unix/sysv/linux/sys/timerfd.h:
	Use __clockid_t instead of clockid_t.

Remove a #warning that was the sole actual problem with using sys/ipc.h
without _GNU_SOURCE/_XOPEN_SOURCE.

	* sysvipc/sys/ipc.h: Remove unnecessary #warning.

_LIBC, __USE_XOPEN2K8, and __STDC_VERSION__ are not always defined.

It seems to me that _LIBC should not appear in installed headers, but
avoiding that for argp specifically would require more surgery than
feels appropriate for this patch set.  It's possible that
"#ifdef _LIBC" would be sufficient, but I wanted to be conservative.

All three versions of bits/socket.h want to know whether __flexarr
will produce a real flexible array member -- specifically, one that
doesn't alter sizeof(the structure containing it).  They were testing
for this with a complicated #if condition that did not agree with
sys/cdefs.h and that tripped -Wundef warnings under -std=c90.
I added a new macro to sys/cdefs.h, __glibc_c99_flexarr_available,
which reveals exactly what these headers want to know.  I also took
the opportunity to flatten the rather messy conditional nest defining
__flexarr.

	* argp/argp.h: Check whether _LIBC is defined before expanding it.
	* posix/glob.h: Check whether __USE_XOPEN2K8 is defined instead
	of expanding it.

	* misc/sys/cdefs.h: Tidy up conditional nest defining __flexarr.
	Define __glibc_c99_flexarr_available to 1 when the compiler
	supports C99-compatible flexible array members, 0 otherwise.
	* sysdeps/unix/sysv/linux/bits/socket.h
	* sysdeps/mach/hurd/bits/socket.h
	* bits/socket.h: Use __glibc_c99_flexarr_available in
	definitions of struct cmsghdr and CMSG_DATA.
2016-09-23 08:43:55 -04:00
argp Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
assert
benchtests
bits Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
catgets
conform conform tests: call perl with '-I.' 2016-09-05 22:53:22 +02:00
crypt
csu Remove __libc_csu_irel declaration 2016-09-10 15:50:53 +05:30
ctype
debug Add tests for fortification of bcopy and bzero. 2016-08-19 09:04:35 -04:00
dirent
dlfcn tst-rec-dlopen: Fix build fail due to missing inclusion of string.h 2016-06-06 11:03:04 +02:00
elf [PR19826] fix non-LE TLS in static programs 2016-09-21 22:01:16 -03:00
gmon
gnulib
grp Don't install the internal header grp-merge.h 2016-07-18 09:33:21 -03:00
gshadow
hesiod
hurd hurdmalloc: Run fork handler as late as possible [BZ #19431] 2016-09-22 01:45:48 +02:00
iconv
iconvdata
include resolv: Remove unsupported hook functions from the API [BZ #20016] 2016-09-21 16:30:27 +02:00
inet Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
intl hurd: fix pathconf visibility 2016-09-18 23:45:12 +02:00
io tst-open-tmpfile: Add checks for open64, openat64, linkat 2016-09-23 13:38:09 +02:00
libidn
libio Support __STDC_WANT_LIB_EXT2__ feature test macro. 2016-08-02 17:40:35 +00:00
locale S390: Fix relocation of _nl_current_LC_CATETORY_used in static build. [BZ #19860] 2016-06-28 12:28:53 +02:00
localedata localedata: lt_LT: use hyphens in d_fmt [BZ #20497] 2016-08-24 16:07:02 -04:00
login 2016-06-11 Paul Pluzhnikov <ppluzhnikov@google.com> 2016-06-11 14:50:16 -07:00
mach Fix old-style function definition 2016-09-20 23:10:51 +02:00
malloc malloc: Manual part of conversion to __libc_lock 2016-09-21 16:28:08 +02:00
manual manual: Clarify NSS error reporting 2016-09-23 14:18:09 +02:00
math Add issubnormal. 2016-09-21 20:52:02 +00:00
mathvec
misc Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
nis Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
nptl [PR19826] fix non-LE TLS in static programs 2016-09-21 22:01:16 -03:00
nptl_db Update and install proc_service.h [BZ #20311] 2016-08-03 16:26:32 +02:00
nscd Fix incorrect double-checked locking related to _res_hconf.initialized. 2016-08-18 20:53:37 +02:00
nss Fix incorrect double-checked locking related to _res_hconf.initialized. 2016-08-18 20:53:37 +02:00
po Update PO files. 2016-08-04 11:41:27 -04:00
posix Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
pwd
resolv Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
resource
rt rt: Set shm_open as a non cancellation point (BZ #18243) 2016-09-15 11:15:14 -03:00
scripts sysd-rules: Cut down the number of rtld-% pattern rules 2016-09-20 10:41:05 +02:00
setjmp
shadow
signal
socket
soft-fp [soft-fp] Add support for various half-precision conversion routines. 2016-09-21 21:02:54 +00:00
stdio-common vfscanf: Avoid multiple reads of multi-byte character width 2016-09-02 15:59:34 +02:00
stdlib Add <stdint.h> integer width macros. 2016-09-21 17:06:36 +00:00
streams
string string: More tests for strcmp, strcasecmp, strncmp, strncasecmp 2016-08-26 14:28:46 +02:00
sunrpc
sysdeps Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
sysvipc Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
termios
time
timezone
wcsmbs Add tst-wcstod-round 2016-08-19 11:17:07 -05:00
wctype
.gitattributes
.gitignore
BUGS
CONFORMANCE
COPYING
COPYING.LIB
ChangeLog Installed-header hygiene (BZ#20366): Simple self-contained fixes. 2016-09-23 08:43:55 -04:00
ChangeLog.1
ChangeLog.2
ChangeLog.3
ChangeLog.4
ChangeLog.5
ChangeLog.6
ChangeLog.7
ChangeLog.8 ChangeLog: change Winblowz to Windows 2016-08-10 00:49:28 +08:00
ChangeLog.9
ChangeLog.10
ChangeLog.11 ChangeLog: change Winblowz to Windows 2016-08-10 00:49:28 +08:00
ChangeLog.12
ChangeLog.13
ChangeLog.14
ChangeLog.15
ChangeLog.16
ChangeLog.17
ChangeLog.old-ports
ChangeLog.old-ports-aarch64
ChangeLog.old-ports-aix
ChangeLog.old-ports-alpha
ChangeLog.old-ports-am33
ChangeLog.old-ports-arm
ChangeLog.old-ports-cris
ChangeLog.old-ports-hppa
ChangeLog.old-ports-ia64
ChangeLog.old-ports-linux-generic
ChangeLog.old-ports-m68k
ChangeLog.old-ports-microblaze
ChangeLog.old-ports-mips
ChangeLog.old-ports-powerpc
ChangeLog.old-ports-tile
INSTALL 2016-06-05 Paul Pluzhnikov <ppluzhnikov@google.com> 2016-06-05 08:41:13 -07:00
LICENSES
Makeconfig Generate .op pattern rules for profiling builds only 2016-09-21 10:45:19 +02:00
Makefile Support __STDC_WANT_LIB_EXT2__ feature test macro. 2016-08-02 17:40:35 +00:00
Makefile.in
Makerules Avoid running $(CXX) during build to obtain header file paths 2016-09-21 10:45:32 +02:00
NAMESPACE
NEWS Add issubnormal. 2016-09-21 20:52:02 +00:00
PROJECTS
README
Rules Revert "Add pretty printers for the NPTL lock types" 2016-07-11 20:32:12 +05:30
WUR-REPORT
abi-tags
aclocal.m4
config.h.in S390: Do not set FE_INEXACT with feraiseexcept (FE_OWERFLOW|FE_UNDERFLOW). 2016-08-31 14:54:55 +02:00
config.make.in Avoid running $(CXX) during build to obtain header file paths 2016-09-21 10:45:32 +02:00
configure Avoid running $(CXX) during build to obtain header file paths 2016-09-21 10:45:32 +02:00
configure.ac Avoid running $(CXX) during build to obtain header file paths 2016-09-21 10:45:32 +02:00
cppflags-iterator.mk
extra-lib.mk
extra-modules.mk
gen-locales.mk
libc-abis
o-iterator.mk
shlib-versions
test-skeleton.c test-skeleton.c: Remove unintended #include <stdarg.h>. 2016-09-23 09:41:35 +02:00
version.h Open development for 2.25. 2016-08-01 23:00:21 -04:00

README

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 3.2 or later on all architectures except
i[4567]86 and x86_64, where Linux kernel version 2.6.32 or later
suffices.

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.