glibc

Tree: 352db0bd05

Stefan Liebler 022dfdce00 Add configure check to test if gcc supports attribute ifunc. This patch adds a configure check to test if gcc supports attribute ifunc. The support can either be enabled in <gcc-src>/gcc/config.gcc for one architecture in general by setting default_gnu_indirect_function variable to yes or by configuring gcc with --enable-gnu-indirect-function. The next patch rewrites libc_ifunc macro to use gcc attribute ifunc instead of inline assembly to generate the IFUNC symbols due to false debuginfo. If gcc does not support attribute ifunc, the old approach for generating ifunc'ed symbols is used. Then the debug-information is false. Thus it is recommended to use a gcc with indirect function support (See notes in INSTALL). After this patch-series these inline assemblies for ifunc-handling are not scattered in multiple files but are used only indirect via ifunc-macros and can simply removed in libc-symbols.h in future. If glibc is configured with --enable-multi-arch and gcc does not support attribute ifunc, a configure warning is dumped! ChangeLog: * config.h.in (HAVE_GCC_IFUNC): New undef. * configure.ac: Add check if gcc supports attribute ifunc feature. * configure: Regenerated. * manual/install.texi: Add recommendation for gcc with indirect-function support. * INSTALL: Regenerated.		10 years ago
..
examples	libio: Multiple fixes for open_{w}memstram (BZ#18241 and BZ#20181)	10 years ago
Makefile	Update copyright dates with scripts/update-copyrights.	10 years ago
argp.texi	Manual typos: The Basic Program/System Interface	10 years ago
arith.texi	Add iseqsig.	10 years ago
charset.texi	manual: fix typos in character set handling	10 years ago
check-safety.sh	Make shebang interpreter directives consistent	10 years ago
conf.texi	Manual typos: System Configuration Parameters	10 years ago
contrib.texi	Manual typos: Contributors to	10 years ago
creature.texi	Support __STDC_WANT_IEC_60559_FUNCS_EXT__ feature test macro.	10 years ago
crypt.texi	Manual typos: DES Encryption and Password Handling	10 years ago
ctype.texi	manual: fix typos in the character handling chapter	10 years ago
debug.texi	Manual typos: Debugging support	10 years ago
dir	..	21 years ago
errno.texi	manual: fix typos in error reporting	10 years ago
fdl-1.3.texi	BZ#13738: Switch manual to FDL 1.3.	14 years ago
filesys.texi	Manual typos: File System Interface	10 years ago
freemanuals.texi	Update to canonical freemanuals.texi file.	13 years ago
getopt.texi	Manual typos: The Basic Program/System Interface	10 years ago
header.texi	Use Texinfo macros to refer to the GNU C Library within the manual.	14 years ago
install-plain.texi	BZ #15941: Fix INSTALL file regeneration failure with makeinfo 5.x	13 years ago
install.texi	Add configure check to test if gcc supports attribute ifunc.	10 years ago
intro.texi	manual: fix typo in the introduction	10 years ago
io.texi	Clean up glibc manual references to "GNU system" (bug 6911).	14 years ago
ipc.texi	manual/ipc.texi: Fix AC-safety notes.	12 years ago
job.texi	Manual typos: Job Control	10 years ago
lang.texi	Manual typos: C Language Facilities in the Library	10 years ago
lgpl-2.1.texi	Use canonical FSF .texi files for LGPL and FDL texts.	15 years ago
libc-texinfo.sh	Make shebang interpreter directives consistent	10 years ago
libc.texinfo	Fix doc quoting problems with Texinfo 5	10 years ago
libcbook.texi	initial import	32 years ago
libdl.texi	* manual/libdl.texi: New.	12 years ago
libm-err-tab.pl	Add iseqsig.	10 years ago
llio.texi	Manual typos: Low-Level Input/Output	10 years ago
locale.texi	manual: fix spelling typos	10 years ago
macros.texi	Fix exponents in manual.	11 years ago
maint.texi	Manual typos: Library Maintenance	10 years ago
math.texi	Manual typos: Mathematics	10 years ago
memory.texi	manual: fix typos in the memory chapter	10 years ago
message.texi	manual: fix typos in the message chapter	10 years ago
nss.texi	Manual typos: System Databases and Name Service Switch	10 years ago
nsswitch.texi	update from main archive 960814	30 years ago
pattern.texi	manual: fix typos in the pattern chapter	10 years ago
pipe.texi	* manual/pipe.texi: Document MTASC-safety properties.	12 years ago
platform.texi	PowerPC: Extend Program Priority Register support	11 years ago
probes.texi	Manual typos: Internal probes	10 years ago
process.texi	Manual typos: Processes	10 years ago
resource.texi	Manual typos: Resource Usage and Limitation	10 years ago
search.texi	manual: fix typos in the search chapter	10 years ago
setjmp.texi	Manual typos: Non-Local Exits	10 years ago
signal.texi	Manual typos: Signal Handling	10 years ago
socket.texi	Manual typos: Sockets	10 years ago
startup.texi	Manual typos: The Basic Program/System Interface	10 years ago
stdio-fp.c	update from main archive 970225	30 years ago
stdio.texi	Manual typos: Input/Output on Streams	10 years ago
string.texi	manual: Clarify the documentation of strverscmp [BZ #20524]	10 years ago
summary.awk	Update copyright dates with scripts/update-copyrights.	10 years ago
sysinfo.texi	Manual typos: System Management	10 years ago
syslog.texi	Manual typos: Syslog	10 years ago
terminal.texi	Manual typos: Low-Level Terminal Interface	10 years ago
texinfo.tex	Update miscellaneous files from upstream sources.	10 years ago
texis.awk	Correct close statement.	25 years ago
threads.texi	Manual typos: POSIX Threads	10 years ago
time.texi	Manual typos: Date and Time	10 years ago
tsort.awk	Make shebang interpreter directives consistent	10 years ago
users.texi	Manual typos: Users and Groups	10 years ago
xtract-typefun.awk	Make shebang interpreter directives consistent	10 years ago