9f1528a1bd
GCC's config/ChangeLog since the last time this merge was done (in the binutils-gdb commit0b4d000cc4) is included at the end of this commit message. It is worth noting that the binutils-gdb commit301a9420d9added the file config/debuginfod.m4 which is not present in GCC's config/ directory. This file is preserved, unmodified, after this commit. In order to regenerate all of the configure files, I configured with --enable-maintainer-mode, and built the 'all' target. I then did the same thing on a source tree without this patch, and only committed those files that changed when this patch was added. GCC's config/ChangeLog entries: 2020-02-12 Sandra Loosemore <sandra@codesourcery.com> PR libstdc++/79193 PR libstdc++/88999 * no-executables.m4: Use a non-empty program to test for linker support. 2020-02-01 Andrew Burgess <andrew.burgess@embecosm.com> * lib-link.m4 (AC_LIB_LINKFLAGS_BODY): Update shell syntax. 2020-01-27 Andrew Burgess <andrew.burgess@embecosm.com> * lib-link.m4 (AC_LIB_LINKFLAGS_BODY): Add new --with-libXXX-type=... option. Use this to guide the selection of either a shared library or a static library. 2020-01-24 Maciej W. Rozycki <macro@wdc.com> * toolexeclibdir.m4: New file. 2019-09-10 Christophe Lyon <christophe.lyon@st.com> * futex.m4: Handle *-uclinux*. * tls.m4 (GCC_CHECK_TLS): Likewise. 2019-09-06 Florian Weimer <fweimer@redhat.com> * futex.m4 (GCC_LINUX_FUTEX): Include <unistd.h> for the syscall function. 2019-07-08 Richard Sandiford <richard.sandiford@arm.com> * bootstrap-Og.mk: New file. 2019-06-25 Kwok Cheung Yeung <kcy@codesourcery.com> Andrew Stubbs <ams@codesourcery.com> * gthr.m4 (GCC_AC_THREAD_HEADER): Add case for gcn. 2019-05-30 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> * ax_count_cpus.m4: New file. 2019-05-02 Richard Biener <rguenther@suse.de> PR bootstrap/85574 * bootstrap-lto.mk (extra-compare): Set to gcc/lto1$(exeext). 2019-04-16 Martin Liska <mliska@suse.cz> * bootstrap-lto-lean.mk: Filter out -flto in STAGEtrain_CFLAGS. 2019-04-09 Martin Liska <mliska@suse.cz> * bootstrap-lto-lean.mk: New file. 2019-03-02 Johannes Pfau <johannespfau@gmail.com> * mh-mingw: Also set __USE_MINGW_ACCESS flag for C++ code. 2018-10-31 Joseph Myers <joseph@codesourcery.com> PR bootstrap/82856 * math.m4, tls.m4: Use AC_LANG_SOURCE. Merge from binutils-gdb: 2018-06-19 Simon Marchi <simon.marchi@ericsson.com> * override.m4 (_GCC_AUTOCONF_VERSION): Bump from 2.64 to 2.69. config/ChangeLog: * ax_count_cpus.m4: New file, backported from GCC. * bootstrap-Og.mk: New file, backported from GCC. * bootstrap-lto-lean.mk: New file, backported from GCC. * bootstrap-lto.mk: Changes backported from GCC. * futex.m4: Changes backported from GCC. * gthr.m4: Changes backported from GCC. * lib-link.m4: Changes backported from GCC. * mh-mingw: Changes backported from GCC. * no-executables.m4: Changes backported from GCC. * tls.m4: Changes backported from GCC. * toolexeclibdir.m4: New file, backported from GCC. binutils/ChangeLog: * configure: Regenerate. gdb/ChangeLog: * configure: Regenerate. gdbserver/ChangeLog: * configure: Regenerate. gdbsupport/ChangeLog: * configure: Regenerate. intl/ChangeLog: * configure: Regenerate. libiberty/ChangeLog: * configure: Regenerate. zlib/ChangeLog.bin-gdb: * configure: Regenerate.
67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
dnl ----------------------------------------------------------------------
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dnl This whole bit snagged from libgomp.
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dnl
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dnl GCC_LINUX_FUTEX
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dnl (SHELL-CODE_HANDLER)
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dnl
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AC_DEFUN([GCC_LINUX_FUTEX],[dnl
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GCC_ENABLE(linux-futex,default, ,[use the Linux futex system call],
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permit yes|no|default)
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case "$target" in
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*-linux* | *-uclinux*)
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case "$enable_linux_futex" in
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default)
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# If headers don't have gettid/futex syscalls definition, then
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# default to no, otherwise there will be compile time failures.
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# Otherwise, default to yes. If we don't detect we are
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# compiled/linked against NPTL and not cross-compiling, check
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# if programs are run by default against NPTL and if not, issue
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# a warning.
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enable_linux_futex=no
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[#include <sys/syscall.h>
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#include <unistd.h>
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int lk;],
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[syscall (SYS_gettid); syscall (SYS_futex, &lk, 0, 0, 0);])],
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[save_LIBS="$LIBS"
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LIBS="-lpthread $LIBS"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#include <pthread.h>
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pthread_t th; void *status;],
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[pthread_tryjoin_np (th, &status);])],[enable_linux_futex=yes],
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[if test x$cross_compiling = xno; then
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if getconf GNU_LIBPTHREAD_VERSION 2>/dev/null \
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| LC_ALL=C grep -i NPTL > /dev/null 2>/dev/null; then :; else
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AC_MSG_WARN([The kernel might not support futex or gettid syscalls.
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If so, please configure with --disable-linux-futex])
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fi
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fi
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enable_linux_futex=yes])
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LIBS="$save_LIBS"])
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;;
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yes)
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[#include <sys/syscall.h>
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#include <unistd.h>
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int lk;],
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[syscall (SYS_gettid); syscall (SYS_futex, &lk, 0, 0, 0);])],[],
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[AC_MSG_ERROR([SYS_gettid and SYS_futex required for --enable-linux-futex])])
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;;
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esac
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;;
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*)
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enable_linux_futex=no
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;;
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esac
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if test x$enable_linux_futex = xyes; then
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$1
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fi
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])
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