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* Support compilers defaulting to PIEH.J. Lu2015-06-251-0/+21
| | | | | | | | | | | | | | | | | To support building glibc with GCC 6 configured with --enable-default-pie, which generates PIE by default, we need to build programs as PIE. But elf/tst-dlopen-aout must not be built as PIE since it tests dlopen on ET_EXEC file and PIE is ET_DYN. [BZ #17841] * Makeconfig (no-pie-ldflag): New. (+link): Set to $(+link-pie) if default to PIE. (+link-tests): Set to $(+link-pie-tests) if default to PIE. * config.make.in (build-pie-default): New. * configure.ac (libc_cv_pie_default): New. Set to yes if -fPIE is default. AC_SUBST. * configure: Regenerated. * elf/Makefile (LDFLAGS-tst-dlopen-aout): New.
* This is update for configure, build and install of vector math library.Andrew Senkevich2015-05-141-0/+17
| | | | | | | | | | | | | | | Installation of libm.so as linker script only in case of libmvec.so build. 2015-05-14 Andrew Senkevich <andrew.n.senkevich@gmail.com> * Makeconfig (rpath-dirs, all-subdirs): Added mathvec folder. (libmvec): New variable. * configure.ac: Added option for mathvec build. * configure: Regenerated. * mathvec/Depend: New file. * mathvec/Makefile: New file. * shlib-versions: Added libmvec. * math/Makefile: Added rule for libm.so installation.
* Let non-add-on preconfigure scripts set libc_config_ok.Roland McGrath2015-04-091-3/+4
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* Add a testcase for copy reloc against protected dataH.J. Lu2015-03-311-0/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Linkers in some versions of binutils 2.25 and 2.26 don't support protected data symbol with error messsage like: /usr/bin/ld: copy reloc against protected `bar' is invalid /usr/bin/ld: failed to set dynamic section sizes: Bad value We check if linker supports copy reloc against protected data symbol to avoid running the test if linker is broken. [BZ #17711] * config.make.in (have-protected-data): New. * configure.ac: Check linker support for protected data symbol. * configure: Regenerated. * elf/Makefile (modules-names): Add tst-protected1moda and tst-protected1modb if $(have-protected-data) is yes. (tests): Add tst-protected1a and tst-protected1b if $(have-protected-data) is yes. ($(objpfx)tst-protected1a): New. ($(objpfx)tst-protected1b): Likewise. (tst-protected1modb.so-no-z-defs): Likewise. * elf/tst-protected1a.c: New file. * elf/tst-protected1b.c: Likewise. * elf/tst-protected1mod.h: Likewise. * elf/tst-protected1moda.c: Likewise. * elf/tst-protected1modb.c: Likewise.
* Avoid C++ tests when the C++ cannot be linked.Roland McGrath2015-03-041-84/+174
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* Revert "hurd: Fix abi-tag, following ba90e05"Samuel Thibault2015-02-111-0/+12
| | | | | | | | | and revert the corresponding part of ba90e05 which was making the fix necessary. * abi-tags: Revert ae20c9a: rename back gnu into gnu-gnu. * configure.ac, configure: Revert ba90e05: modify gnu-* host_os back into gnu-gnu, and update comment to refer to abi-tags.
* Require bison 2.7 or newer for regenerating intl/plural.yWill Newton2014-12-221-16/+37
| | | | | | | | | | | | | | | | | | | The merge of the latest gettext code introduced changes to the yacc parser source that are incompatible with versions of bison older than 2.7. Add a configure check for the appropriate versions and document the requirement in INSTALL. ChangeLog: 2014-12-22 Will Newton <will.newton@linaro.org> * manual/install.texi: Document that we require bison 2.7 or above. * INSTALL: Regenerate. * configure.ac: Use AC_CHECK_PROG_VER instead of AC_PATH_PROG when checking for bison and check for version 2.7 or above. * configure: Regenerate.
* Bump required version of texinfo to 4.7Will Newton2014-12-151-1/+1
| | | | | | | | | | | | | | | It seems we require texinfo 4.7 for the --plaintext option, so document that and check for the correct version in configure. ChangeLog: 2014-12-15 Will Newton <will.newton@linaro.org> * manual/install.texi: Bump required version of texinfo to 4.7 from 4.5. * INSTALL: Regenerated. * configure.ac: Check for makeinfo version 4.7 and above. * configure: Regenerated.
* Use -Werror by default, add --disable-werror.Joseph Myers2014-12-101-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As discussed starting at <https://sourceware.org/ml/libc-alpha/2014-11/msg00323.html>, this patch makes the glibc build use -Werror by default to avoid accidentally adding new warnings to the build. The configure option --disable-werror can be used to disable this. -Wno-error=undef is temporarily used because the build isn't clean regarding -Wundef warnings. The idea is that once the remaining -Wundef warnings have been cleaned up (in at least one configuration), -Wno-error=undef will be removed. I get a clean build and test on x86_64 (GCC 4.9 branch) with this patch. The expectation is that this may well break the build for some other configurations, and people seeing such breakage should make appropriate fixes to fix or suppress the warnings for their configurations. In some cases that may involve using pragmas as the right fix (I think that will be right for the -Wno-inline issue for MIPS I referred to in <https://sourceware.org/ml/libc-alpha/2012-11/msg00798.html>, for example), in some cases -Wno-error in sysdeps makefiles (__restore_rt in MIPS sigaction, for example), in some cases substantive fixes for the warnings. Note that if, with a view to listing all the warnings then fixing them all, you just look for "warning:" in output from building and testing with --disable-werror, you'll see lots of warnings from the linker about functions such as tmpnam. Those warnings can be ignored - only compiler warnings are relevant to -Werror, not linker warnings. * configure.ac (--disable-werror): New configure option. (enable_werror): New AC_SUBST. * configure: Regenerated. * config.make.in (enable-werror): New variable. * Makeconfig [$(enable-werror) = yes] (+gccwarn): Add -Werror -Wno-error=undef. (+gccwarn-c): Do not use -Werror=implicit-function-declaration. * manual/install.texi (Configuring and compiling): Document --disable-werror. * INSTALL: Regenerated. * debug/Makefile (CFLAGS-tst-chk1.c): Add -Wno-error. (CFLAGS-tst-chk2.c): Likewise. (CFLAGS-tst-chk3.c): Likewise. (CFLAGS-tst-chk4.cc): Likewise. (CFLAGS-tst-chk5.cc): Likewise. (CFLAGS-tst-chk6.cc): Likewise. (CFLAGS-tst-lfschk1.c): Likewise. (CFLAGS-tst-lfschk2.c): Likewise. (CFLAGS-tst-lfschk3.c): Likewise. (CFLAGS-tst-lfschk4.cc): Likewise. (CFLAGS-tst-lfschk5.cc): Likewise. (CFLAGS-tst-lfschk6.cc): Likewise.
* Require GCC 4.6 or later to build glibc.Joseph Myers2014-11-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* Update minimal required bunutils version to 2.22Andrew Senkevich2014-11-101-3/+3
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* Rework compiler version check in configure.Roland McGrath2014-10-241-63/+33
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* Require autoconf 2.69H.J. Lu2014-09-291-114/+125
| | | | | | | | | | | | | | | | | | | * aclocal.m4: Require autoconf 2.69. * configure: Regenerated. * sysdeps/aarch64/configure: Likewise. * sysdeps/alpha/configure: Likewise. * sysdeps/arm/armv7/configure: Likewise. * sysdeps/arm/configure: Likewise. * sysdeps/ia64/configure: Likewise. * sysdeps/mach/configure: Likewise. * sysdeps/mips/configure: Likewise. * sysdeps/s390/configure: Likewise. * sysdeps/unix/sysv/linux/mips/configure: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/configure: Likewise. * sysdeps/alpha/configure.ac: Avoid empty lines at the end of file. * sysdeps/ia64/configure.ac: Likewise.
* Remove bitrotten --enable-oldest-abi (bug 6652).Joseph Myers2014-09-161-21/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the --enable-oldest-abi configure option, which has long been bitrotten (as reported in bug 6652). The principle of removing this option was agreed in the thread starting at <https://sourceware.org/ml/libc-alpha/2013-07/msg00174.html>. Tested for x86_64 and x86 that the installed shared libraries other than libc.so are unchanged by this patch and that libc.so disassembly and symbol versions are unchanged (debug info changes because of changed line numbers in csu/version.c). [BZ #6652] * Makeconfig (soversions-default-setname): Remove variable. ($(common-objpfx)soversions.i): Don't pass default_setname to soversions.awk. * Makerules ($(common-objpfx)abi-versions.h): Don't pass oldest_abi to abi-versions.awk. * config.h.in (GLIBC_OLDEST_ABI): Remove macro undefine. * config.make.in (oldest-abi): Remove variable. * configure.ac (--enable-oldest-abi): Remove configure option. * configure: Regenerated. * csu/version.c (banner) [GLIBC_OLDEST_ABI]: Remove conditional text. * scripts/abi-versions.awk: Do not handle oldest_abi variable. * scripts/soversions.awk: Do not handle default_setname variable. * sysdeps/mach/hurd/configure.ac: Do not handle oldest_abi variable. * sysdeps/mach/hurd/configure: Regenerated. * sysdeps/unix/sysv/linux/configure.ac: Do not handle oldest_abi variable. * sysdeps/unix/sysv/linux/configure: Regenerated.
* Remove configuration name patterns from shlib-versions.Joseph Myers2014-09-121-13/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the first column (patterns matching configuration names) from shlib-versions, leaving shlib-versions entry selection based purely on sysdeps directories. An implication of this removal is that the default for any non-Linux ports using NPTL will be the same SONAMEs for NPTL libraries as for Linux (as those defaults, previously limited to .*-.*-linux.*, are left in nptl/shlib-versions and nptl_db/shlib-versions). Special host_os handling in configure.ac that was purely for shlib-versions is removed. (The host_os setting is still used for libc-abis - see <https://sourceware.org/ml/libc-alpha/2014-01/msg00375.html> regarding that - but no entries there are affected by this change.) Tested on x86_64 and x86 that the installed shared libraries are unchanged by this patch. * scripts/soversions.awk: Do not handle configuration names. * Makeconfig ($(common-objpfx)soversions.i): Do not pass cpu, vendor and os variables to soversions.awk. * configure.ac: Do not modify gnu-* host_os. * configure: Regenerated * shlib-versions: Remove first column with configuration names. * nptl/shlib-versions: Likewise. * nptl_db/shlib-versions: Likewise. * sysdeps/hppa/shlib-versions: Likewise. * sysdeps/m68k/shlib-versions: Likewise. * sysdeps/mach/hurd/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/aarch64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/alpha/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/arm/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/hppa/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/ia64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/microblaze/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/mips/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/sh/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/tile/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/shlib-versions: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/shlib-versions: Likewise. libidn/ChangeLog: * shlib-versions: Remove first column with configuration names.
* detect broken linker handling of __ehdr_startMike Frysinger2014-08-121-6/+20
| | | | | | Older versions of ld on ia64 support __ehdr_start, but generate relocs when they shouldn't. This causes the ld.so to not run because it tries to resolve the __ehdr_start symbol (but it's not exported).
* Use __builtin_trap for ABORT_INSTRUCTION.Roland McGrath2014-07-311-0/+38
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* Remove relro configure test.Joseph Myers2014-06-271-92/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the configure test for working -z relro. The use of -z relro in Makeconfig became unconditional with commit 2e6ab1df44c412bb9d30b26a4d8a679150a7e375 Author: Ulrich Drepper <drepper@redhat.com> Date: Sat Oct 28 06:44:04 2006 +0000 Remove conditional code which now is unnecessary. (commit reference from git://repo.or.cz/glibc/history), so since then the configure test has not controlled anything about how glibc is built - simply about whether configure succeeds and allows a build to be attempted. The test for whether the option did something useful (as opposed to whether it exists - which we can certainly just assume by now) was originally added in <https://sourceware.org/ml/libc-hacker/2004-09/msg00069.html> to disable the option in a case when it did nothing useful on ia64 (as a result of something deliberate in the linker on ia64). Since 2006 that disabling has been of no effect, and given that the current test does not set libc_relro_required for ia64, it does nothing whatever useful for the original motivating case. Also at around the same time in 2006 the test was made to give an error for missing or broken -z relro support on various architectures. So effectively all the test does now is verify that, on certain architectures, the linker has not been changed deliberately to make the option ineffective. I see no apparent reason why such a change should be expected, or why the build should be stopped if it were to be made (any more than we disallow build on ia64); I think we can trust binutils patch review to point out the consequences of any change to COMMONPAGESIZE setting. The only thing that might now make sense would be disabling the -z relro use on an architecture-specific basis if there were an architecture-specific reason to consider that to make sense; it would be for the ia64 maintainer to decide if that makes sense for ia64 at present, but I think that could be done through sysdeps Makefiles - no special configure tests needed. Tested for x86_64 that this patch makes no change to the installed shared libraries. Together with <https://sourceware.org/ml/libc-alpha/2014-06/msg00788.html> (pending review) this substantially eliminates architecture-specific cases from architecture-independent configure.ac files. There remains an i386 case in sysdeps/mach/hurd/configure.ac that should properly move to the i386 subdirectory. (There are also OS-specific cases outside OS-specific directories; in principle I think should should also move.) * configure.ac (libc_commonpagesize): Remove variable. (libc_relro_required): Likewise. (libc_cv_z_relro): Remove configure test. * configure: Regenerated. * sysdeps/aarch64/preconfigure (libc_commonpagesize): Do not set variable. (libc_relro_required): Likewise. * sysdeps/alpha/preconfigure (libc_commonpagesize): Likewise. (libc_relro_required): Likewise. * sysdeps/arm/preconfigure.ac (libc_commonpagesize): Likewise. (libc_relro_required): Likewise. * sysdeps/arm/preconfigure: Regenerated. * sysdeps/ia64/preconfigure: Remove file. * sysdeps/tile/preconfigure (libc_commonpagesize): Do not set variable. (libc_relro_required): Likewise.
* Remove powerpc special cases in configure.ac.Joseph Myers2014-06-261-13/+0
| | | | | | | | | | | | | | | | This patch removes two powerpc special cases in the main configure.ac. The test for rs6000 is irrelevant to currently supported configurations (config.guess reports rs6000 for some OSes, of which the only one currently supported by GCC is AIX, but not for Linux). There's no need either for a special case for powerpc*-*soft; --without-fp suffices, and GCC doesn't have any special handling of such a triplet. Not tested. * configure.ac: Do not test for machine being rs6000. Do not test for powerpc*-*soft. * configure: Regenerated.
* Remove configure tests for assembler CFI support.Joseph Myers2014-06-261-37/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes configure tests for assembler CFI support (and thereby eliminates an architecture-specific case in the main configure.ac), instead assuming that support is present unconditionally. The main test was added in 2003 around the time CFI support was added to the assembler. cfi_personality and cfi_lsda support were added to the assembler in 2006. cfi_sections support was added in 2009, a few weeks before binutils 2.20 was released; it's in 2.20, the minimum supported version, so even that configure test is obsolete. Tested x86_64 that the installed shared libraries are unchanged by this patch. * configure.ac (libc_cv_asm_cfi_directives): Remove configure test. * configure: Regenerated. * config.h.in (HAVE_ASM_CFI_DIRECTIVES): Remove macro undefine. * sysdeps/arm/configure.ac (libc_cv_asm_cfi_directive_sections): Remove configure test. * sysdeps/arm/configure: Regenerated. * sysdeps/nptl/configure.ac: Do not check libc_cv_asm_cfi_directives. * sysdeps/nptl/configure: Regenerated. * sysdeps/x86_64/nptl/configure.ac: Remove file. * sysdeps/x86_64/nptl/configure: Remove generated file. * b/sysdeps/generic/sysdep.h [HAVE_ASM_CFI_DIRECTIVES]: Make code unconditional. [!HAVE_ASM_CFI_DIRECTIVES]: Remove conditional code.
* Move USE_REGPARMS define to sysdeps/i386/configure.ac.Joseph Myers2014-06-251-5/+0
| | | | | | | | | | | | | This patch moves the USE_REGPARMS define from the toplevel configure.ac to sysdeps/i386/configure.ac. Tested x86 that the disassembly of installed shared libraries is unchanged by this patch. * configure.ac (USE_REGPARMS): Don't define here. * configure: Regenerated. * sysdeps/i386/configure.ac (USE_REGPARMS): Define here. * sysdeps/i386/configure: Regenerated.
* Remove BROKEN_PPC_ASM_CR0 configure test.Joseph Myers2014-06-251-34/+0
| | | | | | | | | | | | | | | One piece of architecture-specific code in the main configure.ac is the powerpc test that can define BROKEN_PPC_ASM_CR0. There's no need to move this to a sysdeps configure script, or to work out what bug it was testing in May 1998 to see if it's still relevant, since nothing in the source tree now uses the results of this test. Thus, this patch just removes the test in question. Not tested. * configure.ac (libc_cv_c_asmcr0_bug): Remove configure test. * configure: Regenerated. * config.h.in (BROKEN_PPC_ASM_CR0): Remove macro.
* Move base_machine and machine settings from configure.ac to sysdeps ↵Joseph Myers2014-06-251-33/+2
| | | | | | | | | | | | | | | | | | | | | | preconfigure fragments. This patch makes non-ex-ports architectures set base_machine and machine based on the original configured machine value in preconfigure fragments, like ex-ports architectures, rather than in the toplevel configure.ac. Tested x86 that the disassembly of installed shared libraries is unchanged by the patch. * configure.ac (base_machine): Do not set specially for particular machines here. * configure: Regenerated. * sysdeps/powerpc/preconfigure: Move machine and base_machine settings from configure.ac. * sysdeps/i386/preconfigure: New file. * sysdeps/s390/preconfigure: Likewise. * sysdeps/sh/preconfigure: Likewise. * sysdeps/sparc/preconfigure: Likewise.
* S/390: Port of lock elision to System/zDominik Vogt2014-05-091-0/+2
| | | | | | | | | | Added support for TX lock elision of pthread mutexes on s390 and s390x. This may improve lock scaling of existing programs on TX capable systems. The lock elision code is only built with --enable-lock-elision=yes and then requires a GCC version supporting the TX builtins. With lock elision default mutexes are elided via __builtin_tbegin, if the cpu supports transactions. By default lock elision is not enabled and the elision code is not built.
* nscd: Make SELinux checks dynamic.Carlos O'Donell2014-04-141-30/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SELinux team has indicated to me that glibc's SELinux checks in nscd are not being carried out as they would expect the API to be used today. They would like to move away from static header defines for class and permissions and instead use dynamic checks at runtime that provide an answer which is dependent on the runtime status of SELinux i.e. more dynamic. The following patch is a minimal change that moves us forward in this direction. It does the following: * Stop checking for SELinux headers that define NSCD__SHMEMHOST. Check only for the presence or absence of the library. * Don't encode the specific SELinux permission constants into a table at build time, and instead use the symbolic name for the permission as expected. * Lookup the "What do we do if we don't know this permission?" policy and use that if we find SELinux's policy is older than the glibc policy e.g. we make a request for a permission that SELinux doesn't know about. * Lastly, translate the class and permission and then make the permission check. This is done every time we lookup a permission, and this is the expected way to use the API. SELinux will optimize this for us, and we expect the network latencies to hide these extra library calls. Tested on x86, x86-64, and via Fedora Rawhide since November 2013. See: https://sourceware.org/ml/libc-alpha/2014-04/msg00179.html
* PowerPC: define _CALL_ELF if compiler does notAdhemerval Zanella2014-04-061-2/+6
| | | | | | | | | | | | This patch makes the configure adds -D_CALL_ELF=1 when compiler does not define _CALL_ELF (versions before powerpc64le support). It cleans up compiler warnings on old compiler where _CALL_ELF is not defined on powerpc64(be) builds. It does by add a new config.make variable for configure-deduced CPPFLAGS and accumulate into that (confix-extra-cppflags). It also generalizes libc_extra_cflags so it accumulates in sysdeps configure fragmenets.
* stop supporting bash-1.xMike Frysinger2014-03-131-9/+0
| | | | | We've stopped supporting toolchain packages older than 2009, so punting bash-1.x is reasonable when bash-2 was released almost 20 years ago.
* delete ksh checksMike Frysinger2014-03-131-56/+0
| | | | Nothing in the tree uses ksh anymore, so punt these checks.
* Use __ehdr_start, when available, for rtld to get its own headers.Roland McGrath2014-03-131-0/+38
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* Set AUTOCONF variable when maintainer-mode is not usedAllan McRae2013-12-161-0/+2
| | | | | Fixes build issue introduced in 8894bad3 when configure.ac is altered and maintainer-mode is not enabled.
* Add --enable-maintainer-mode configure optionAllan McRae2013-12-161-16/+30
| | | | | | | | | Autoconf is tested for and run if needed only when --enable-maintainer-mode is used on configure. This results in the autom4te.cache directory only being written in the source directory during configure if automatic autoconf usage is requested. Fixes BZ #14120.
* Accept make versions 4.0 and greaterMarc-Antoine Perennou2013-10-311-1/+1
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* rename configure.in to configure.acMike Frysinger2013-10-301-1/+1
| | | | | | | Autoconf has been deprecating configure.in for quite a long time. Rename all our configure.in and preconfigure.in files to .ac. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* PowerPC LE configuryAlan Modra2013-10-041-2/+2
| | | | | | | | | | | http://sourceware.org/ml/libc-alpha/2013-08/msg00096.html This adds the basic configury bits for powerpc64le and powerpcle. * configure.in: Map powerpc64le and powerpcle to base_machine/machine. * configure: Regenerate. * nptl/shlib-versions: Powerpc*le starts at 2.18. * shlib-versions: Likewise.
* Remove --disable-versioning.Joseph Myers2013-09-041-95/+0
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* configure: add missing quotes in $build_pt_chown testMike Frysinger2013-08-251-1/+1
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* CVE-2013-2207, BZ #15755: Disable pt_chown.Carlos O'Donell2013-07-211-0/+16
| | | | | | | | | | | | | | | | | | | | | | | The helper binary pt_chown tricked into granting access to another user's pseudo-terminal. Pre-conditions for the attack: * Attacker with local user account * Kernel with FUSE support * "user_allow_other" in /etc/fuse.conf * Victim with allocated slave in /dev/pts Using the setuid installed pt_chown and a weak check on whether a file descriptor is a tty, an attacker could fake a pty check using FUSE and trick pt_chown to grant ownership of a pty descriptor that the current user does not own. It cannot access /dev/pts/ptmx however. In most modern distributions pt_chown is not needed because devpts is enabled by default. The fix for this CVE is to disable building and using pt_chown by default. We still provide a configure option to enable hte use of pt_chown but distributions do so at their own risk.
* Fix lock elision help text in INSTALL and configureSiddhesh Poyarekar2013-07-041-2/+1
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* Add a configure option to enable lock elision and disable by defaultAndi Kleen2013-07-021-0/+16
| | | | Can be enabled with --enable-lock-elision=yes at configure time.
* Require GCC 4.4 or later to build glibc.Joseph Myers2013-06-261-1/+1
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* Fix loop construction to functions callsAdhemerval Zanella2013-06-201-0/+33
| | | | | | Check wheter the compiler has the option -fno-tree-loop-distribute-patterns to inhibit loop transformation to library calls and uses it on memset and memmove default implementation to avoid recursive calls.
* Sort sysd-rules-patterns by descending pattern length.Roland McGrath2013-06-171-1/+1
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* Configuring for i386 is no longer supported.Carlos O'Donell2013-04-171-10/+1
| | | | | | | | | | | | | | | | | We no longer support configuring for i386, nor do we elide such a configuration to i686. Configuring with i386-* is a failure, and we provide an example of how to fix that. --- 2013-04-17 Carlos O'Donell <carlos@redhat.com> * configure.in: Remove i386 configure warning. Remove i386 case. * configure: Regenerate. * sysdeps/i386/configure.in: Raise error if config_machine is i386. Add example to error message. * sysdeps/i386/configure: Regenerate.
* i386: Fail at configure time for i386 builds.Carlos O'Donell2013-04-061-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change does two things: * Treats a target i386-* as if it were i686. * Fails configure if the user is generating code for i386. We no longer support i386 code-generation because the i386 lacks the atomic operations we need in glibc. You can still configure for i386-*, but you get i686 code. You can't build with --march=i386, --mtune=i386 or a compiler that defaults to i386 code-generation. I've added two i386 entries in the master todo list to discuss merging and renaming: http://sourceware.org/glibc/wiki/Development_Todo/Master#i386 The failure modes are fail-safe here. You compile for i386, get i686, and try to run on i386 and it fails. The configure log has a warning saying we elided to i686. There is no situation that I can see where we run into any serious problems. The patch makes the current state better in that we get less confused users and we build successfully in more default configurations. The next enhancement would be to add --march=i?86 as suggested in #c20 of BZ#10062 for any i?86-* builds, which would solve the problem of a 32-bit compiler that defaults to i386 code-gen and glibc configured for i686-* target. Which previously failed at build time, and now will fail at configure time (requires adding --march=i686). Updated NEWS with BZ #10060 and #10062. No regressions. --- 2013-04-06 Carlos O'Donell <carlos@redhat.com> [BZ #10060, #10062] * aclocal.m4 (LIBC_COMPILER_BUILTIN_INLINED): New macro. * sysdeps/i386/configure.in: Use LIBC_COMPILER_BUILTIN_INLINED and fail configure if __sync_val_compare_and_swap is not inlined. * sysdeps/i386/configure: Regenerate. * configure.in: Build for i686 when configured for i386. * configure: Regenerate. * README: Remove i386 reference.
* Move system-specific settings out of toplevel configure.in and config.make.in.Joseph Myers2013-03-201-18/+2
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* Add support for rtld directory different from slib directoryAndreas Schwab2013-03-191-0/+2
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* Don't bother checking for $CC option to accept ISO C89.Thomas Schwinge2013-01-251-90/+5
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* configure: Default to CPP="$CC -E" unless overridden.Thomas Schwinge2013-01-251-167/+6
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* Fix multiarch handling in sysdeps generation.Roland McGrath2013-01-111-4/+10
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* Add --enable-hardcoded-path-in-tests configure optionH.J. Lu2013-01-111-0/+14
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