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Fangrui Song 224edada60 configure: Allow LD to be LLD 13.0.0 or above [BZ #26558]
When using LLD (LLVM linker) as the linker, configure prints a confusing
message.

    *** These critical programs are missing or too old: GNU ld

LLD>=13.0.0 can build glibc --enable-static-pie. (8.0.0 needs one
workaround for -Wl,-defsym=_begin=0. 9.0.0 works with
--disable-static-pie).

XFAIL two tests sysdeps/x86/tst-ifunc-isa-* which have the BZ #28154
issue (LLD follows the PowerPC port of GNU ld for ifunc by placing
IRELATIVE relocations in .rela.dyn, triggering a glibc ifunc fragility).

The set of dynamic symbols is the same with GNU ld and LLD,
modulo unused SHN_ABS version node symbols.

For comparison, gold does not support --enable-static-pie
yet (--no-dynamic-linker is unsupported BZ #22221), yet
has 6 failures more than LLD. gold linked libc.so has
larger .dynsym differences with GNU ld and LLD
(non-default version symbols are changed to default versions
by a version script BZ #28196).
2021-08-31 20:23:34 -07:00
argp argp: Avoid undefined behaviour when invoking qsort(). 2021-02-04 16:44:29 -03:00
assert Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
benchtests Remove sysdeps/*/tls-macros.h 2021-08-18 09:15:20 -07:00
bits Update floating-point feature test macro handling for C2X 2021-06-01 14:22:06 +00:00
catgets Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
ChangeLog.old Update ChangeLog.old/ChangeLog.23. 2021-08-01 21:33:43 -04:00
conform Allow #pragma GCC in headers in conformtest 2021-08-27 17:47:46 +00:00
crypt Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
csu Use __executable_start as the lowest address for profiling [BZ #28153] 2021-08-24 06:44:18 -07:00
ctype Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
debug Remove all usage of @BASH@ or ${BASH} in installed files, and hardcode /bin/bash instead 2021-05-12 07:47:11 +05:30
dirent Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
dlfcn elf: Clean up GLIBC_PRIVATE exports of internal libdl symbols 2021-07-07 08:41:24 +02:00
elf elf: Skip tst-auditlogmod-* if the linker doesn't support --depaudit [BZ #28151] 2021-08-24 09:35:32 -07:00
gmon Use __executable_start as the lowest address for profiling [BZ #28153] 2021-08-24 06:44:18 -07:00
gnulib Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
grp Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
gshadow Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
hesiod Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
htl htl: Let libc call __pthread_mutex_{,try,un}lock 2021-07-13 23:36:58 +02:00
hurd hurd: Add support for AT_NO_AUTOMOUNT 2021-08-10 17:16:54 +02:00
iconv Fix iconv build with GCC mainline 2021-08-23 16:18:42 +00:00
iconvdata Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
include time: Fix overflow itimer tests on 32-bit systems 2021-08-15 07:09:58 +09:00
inet Add INADDR_DUMMY from Linux 5.13 to netinet/in.h 2021-08-05 20:12:56 +00:00
intl Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
io Use support_open_dev_null_range io/tst-closefrom, misc/tst-close_range, and posix/tst-spawn5 (BZ #28260) 2021-08-26 17:13:47 -03:00
libio Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
locale Use 64 bit time_t stat internally 2021-06-22 12:09:52 -03:00
localedata Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
login login: Move libutil into libc 2021-06-30 08:43:37 +02:00
mach Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc mtrace: Fix output with PIE and ASLR [BZ #22716] 2021-08-23 08:14:22 +05:30
manual llio.texi: Wording fixes in description of closefrom() 2021-08-26 15:23:07 -03:00
math Update floating-point feature test macro handling for C2X 2021-06-01 14:22:06 +00:00
mathvec Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
misc Linux: Fix fcntl, ioctl, prctl redirects for _TIME_BITS=64 (bug 28182) 2021-08-06 09:52:00 +02:00
nis nis: Fix leak on realloc failure in nis_getnames [BZ #28150] 2021-08-02 11:14:20 -04:00
nptl nptl: Fix tst-cancel7 and tst-cancelx7 race condition (BZ #14232) 2021-08-26 17:13:47 -03:00
nptl_db nptl_db: Re-use the ELF-to-abilist converter for ABI checking 2021-06-29 22:17:08 +02:00
nscd Use 64 bit time_t stat internally 2021-06-22 12:09:52 -03:00
nss nss: Directly load nss_dns, without going through dlsym/dlopen 2021-07-19 07:56:57 +02:00
po po/nl.po: Update Dutch translation. 2021-08-01 20:52:28 -04:00
posix Use support_open_dev_null_range io/tst-closefrom, misc/tst-close_range, and posix/tst-spawn5 (BZ #28260) 2021-08-26 17:13:47 -03:00
pwd Annotate additional APIs with GCC attribute access. 2021-05-06 11:01:05 -06:00
resolv Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
resource y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
rt librt: add test (bug 28213) 2021-08-12 16:09:50 +05:30
scripts Use binutils 2.37 branch in build-many-glibcs.py 2021-08-09 17:00:36 +00:00
setjmp nptl: Move __pthread_unwind_next into libc 2021-04-21 19:49:50 +02:00
shadow Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
signal y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
socket socket: Add time64 alias for setsockopt 2021-07-22 19:16:26 +02:00
soft-fp soft-fp: Add __extendhfsf2/__extendhfdf2, __truncsfhf2/__truncdfhf2, __eqhf2/__nehf2 2021-07-07 08:01:32 -07:00
stdio-common hurd: Fix errlist error mapping 2021-08-23 19:06:49 +02:00
stdlib test-dlclose-exit-race: avoid hang on pthread_create error 2021-08-04 15:33:21 -04:00
string Fix error message in memmove test to display correct src pointer 2021-08-26 09:34:27 -07:00
sunrpc Force building with -fno-common 2021-07-09 20:09:14 +02:00
support support: Add support_wait_for_thread_exit 2021-08-30 13:43:56 +02:00
sysdeps configure: Allow LD to be LLD 13.0.0 or above [BZ #26558] 2021-08-31 20:23:34 -07:00
sysvipc Linux: Cleanups after librt move 2021-06-28 09:51:01 +02:00
termios Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
time time: Fix overflow itimer tests on 32-bit systems 2021-08-15 07:09:58 +09:00
timezone Remove all usage of @BASH@ or ${BASH} in installed files, and hardcode /bin/bash instead 2021-05-12 07:47:11 +05:30
wcsmbs Enable support for GCC 11 -Wmismatched-dealloc. 2021-05-16 15:21:18 -06:00
wctype Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 configure: Replaced obsolete AC_TRY_COMPILE 2021-06-04 10:16:00 -03:00
config.h.in x86-64: Remove assembler AVX512DQ check 2021-08-24 07:05:35 -07:00
config.make.in Add pthread-in-libc, libpthread-routines-var, librt-routines-var 2021-05-03 08:13:32 +02:00
configure configure: Allow LD to be LLD 13.0.0 or above [BZ #26558] 2021-08-31 20:23:34 -07:00
configure.ac configure: Allow LD to be LLD 13.0.0 or above [BZ #26558] 2021-08-31 20:23:34 -07:00
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
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
INSTALL Update install.texi, and regenerate INSTALL. 2021-08-01 16:48:43 -04:00
libc-abis riscv: support GNU indirect function 2021-01-10 21:25:13 -05:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Force building with -fno-common 2021-07-09 20:09:14 +02:00
Makefile Install shared objects under their ABI names 2021-06-28 08:33:57 +02:00
Makefile.help Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Install shared objects under their ABI names 2021-06-28 08:33:57 +02:00
NEWS Open master branch for glibc 2.35 development 2021-08-01 21:54:40 -04:00
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
README Documentation for the RISC-V 32-bit port 2020-08-27 08:17:44 -07:00
Rules Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
shlib-versions Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
test-skeleton.c Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
version.h Open master branch for glibc 2.35 development 2021-08-01 21:54:40 -04:00

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.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 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
	arc*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	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
	riscv32-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see https://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 https://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 https://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.