37f980dc03
... and re-generate all possible configure files, since they may depend
on things in config/.
config/ChangeLog:
Sync with GCC
2018-06-08 Martin Liska <mliska@suse.cz>
* bootstrap-mpx.mk: Remove.
2018-05-10 Martin Liska <mliska@suse.cz>
PR bootstrap/64914
* bootstrap-ubsan.mk: Define UBSAN_BOOTSTRAP.
2018-05-09 Joshua Watt <jpewhacker@gmail.com>
* ax_pthread.m4: Add file.
2018-05-08 Richard Biener <rguenther@suse.de>
PR bootstrap/85571
* bootstrap-lto-noplugin.mk: Disable compare.
* bootstrap-lto.mk: Supply contrib/compare-lto for do-compare.
2018-04-24 H.J. Lu <hongjiu.lu@intel.com>
PR bootstrap/85490
* bootstrap-cet.mk (STAGE4_CFLAGS): New.
2018-04-24 H.J. Lu <hongjiu.lu@intel.com>
PR target/85485
* bootstrap-cet.mk (STAGE2_CFLAGS): Remove -mcet.
(STAGE3_CFLAGS): Likewise.
2018-04-24 H.J. Lu <hongjiu.lu@intel.com>
PR target/85485
* cet.m4 (GCC_CET_FLAGS): Replace -mcet with -mshstk.
2018-04-19 Jakub Jelinek <jakub@redhat.com>
* cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace
--enable-cet=default with --enable-cet=auto.
2018-04-18 David Malcolm <dmalcolm@redhat.com>
PR jit/85384
* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.
486 lines
20 KiB
Plaintext
486 lines
20 KiB
Plaintext
# ===========================================================================
|
|
# https://www.gnu.org/software/autoconf-archive/ax_pthread.html
|
|
# ===========================================================================
|
|
#
|
|
# SYNOPSIS
|
|
#
|
|
# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
|
|
#
|
|
# DESCRIPTION
|
|
#
|
|
# This macro figures out how to build C programs using POSIX threads. It
|
|
# sets the PTHREAD_LIBS output variable to the threads library and linker
|
|
# flags, and the PTHREAD_CFLAGS output variable to any special C compiler
|
|
# flags that are needed. (The user can also force certain compiler
|
|
# flags/libs to be tested by setting these environment variables.)
|
|
#
|
|
# Also sets PTHREAD_CC to any special C compiler that is needed for
|
|
# multi-threaded programs (defaults to the value of CC otherwise). (This
|
|
# is necessary on AIX to use the special cc_r compiler alias.)
|
|
#
|
|
# NOTE: You are assumed to not only compile your program with these flags,
|
|
# but also to link with them as well. For example, you might link with
|
|
# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
|
|
#
|
|
# If you are only building threaded programs, you may wish to use these
|
|
# variables in your default LIBS, CFLAGS, and CC:
|
|
#
|
|
# LIBS="$PTHREAD_LIBS $LIBS"
|
|
# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
# CC="$PTHREAD_CC"
|
|
#
|
|
# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
|
|
# has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
|
|
# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
|
|
#
|
|
# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
|
|
# PTHREAD_PRIO_INHERIT symbol is defined when compiling with
|
|
# PTHREAD_CFLAGS.
|
|
#
|
|
# ACTION-IF-FOUND is a list of shell commands to run if a threads library
|
|
# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
|
|
# is not found. If ACTION-IF-FOUND is not specified, the default action
|
|
# will define HAVE_PTHREAD.
|
|
#
|
|
# Please let the authors know if this macro fails on any platform, or if
|
|
# you have any other suggestions or comments. This macro was based on work
|
|
# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
|
|
# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
|
|
# Alejandro Forero Cuervo to the autoconf macro repository. We are also
|
|
# grateful for the helpful feedback of numerous users.
|
|
#
|
|
# Updated for Autoconf 2.68 by Daniel Richard G.
|
|
#
|
|
# LICENSE
|
|
#
|
|
# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
|
|
# Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify it
|
|
# under the terms of the GNU General Public License as published by the
|
|
# Free Software Foundation, either version 3 of the License, or (at your
|
|
# option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|
# Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
#
|
|
# As a special exception, the respective Autoconf Macro's copyright owner
|
|
# gives unlimited permission to copy, distribute and modify the configure
|
|
# scripts that are the output of Autoconf when processing the Macro. You
|
|
# need not follow the terms of the GNU General Public License when using
|
|
# or distributing such scripts, even though portions of the text of the
|
|
# Macro appear in them. The GNU General Public License (GPL) does govern
|
|
# all other use of the material that constitutes the Autoconf Macro.
|
|
#
|
|
# This special exception to the GPL applies to versions of the Autoconf
|
|
# Macro released by the Autoconf Archive. When you make and distribute a
|
|
# modified version of the Autoconf Macro, you may extend this special
|
|
# exception to the GPL to apply to your modified version as well.
|
|
|
|
#serial 24
|
|
|
|
AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
|
|
AC_DEFUN([AX_PTHREAD], [
|
|
AC_REQUIRE([AC_CANONICAL_HOST])
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_REQUIRE([AC_PROG_SED])
|
|
AC_LANG_PUSH([C])
|
|
ax_pthread_ok=no
|
|
|
|
# We used to check for pthread.h first, but this fails if pthread.h
|
|
# requires special compiler flags (e.g. on Tru64 or Sequent).
|
|
# It gets checked for in the link test anyway.
|
|
|
|
# First of all, check if the user has set any of the PTHREAD_LIBS,
|
|
# etcetera environment variables, and if threads linking works using
|
|
# them:
|
|
if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
|
|
ax_pthread_save_CC="$CC"
|
|
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
ax_pthread_save_LIBS="$LIBS"
|
|
AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
|
|
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
LIBS="$PTHREAD_LIBS $LIBS"
|
|
AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
|
|
AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
|
|
AC_MSG_RESULT([$ax_pthread_ok])
|
|
if test "x$ax_pthread_ok" = "xno"; then
|
|
PTHREAD_LIBS=""
|
|
PTHREAD_CFLAGS=""
|
|
fi
|
|
CC="$ax_pthread_save_CC"
|
|
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
LIBS="$ax_pthread_save_LIBS"
|
|
fi
|
|
|
|
# We must check for the threads library under a number of different
|
|
# names; the ordering is very important because some systems
|
|
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
|
|
# libraries is broken (non-POSIX).
|
|
|
|
# Create a list of thread flags to try. Items starting with a "-" are
|
|
# C compiler flags, and other items are library names, except for "none"
|
|
# which indicates that we try without any flags at all, and "pthread-config"
|
|
# which is a program returning the flags for the Pth emulation library.
|
|
|
|
ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
|
|
|
|
# The ordering *is* (sometimes) important. Some notes on the
|
|
# individual items follow:
|
|
|
|
# pthreads: AIX (must check this before -lpthread)
|
|
# none: in case threads are in libc; should be tried before -Kthread and
|
|
# other compiler flags to prevent continual compiler warnings
|
|
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
|
|
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
|
|
# (Note: HP C rejects this with "bad form for `-t' option")
|
|
# -pthreads: Solaris/gcc (Note: HP C also rejects)
|
|
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
|
|
# doesn't hurt to check since this sometimes defines pthreads and
|
|
# -D_REENTRANT too), HP C (must be checked before -lpthread, which
|
|
# is present but should not be used directly; and before -mthreads,
|
|
# because the compiler interprets this as "-mt" + "-hreads")
|
|
# -mthreads: Mingw32/gcc, Lynx/gcc
|
|
# pthread: Linux, etcetera
|
|
# --thread-safe: KAI C++
|
|
# pthread-config: use pthread-config program (for GNU Pth library)
|
|
|
|
case $host_os in
|
|
|
|
freebsd*)
|
|
|
|
# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
|
|
# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
|
|
|
|
ax_pthread_flags="-kthread lthread $ax_pthread_flags"
|
|
;;
|
|
|
|
hpux*)
|
|
|
|
# From the cc(1) man page: "[-mt] Sets various -D flags to enable
|
|
# multi-threading and also sets -lpthread."
|
|
|
|
ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
|
|
;;
|
|
|
|
openedition*)
|
|
|
|
# IBM z/OS requires a feature-test macro to be defined in order to
|
|
# enable POSIX threads at all, so give the user a hint if this is
|
|
# not set. (We don't define these ourselves, as they can affect
|
|
# other portions of the system API in unpredictable ways.)
|
|
|
|
AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
|
|
[
|
|
# if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
|
|
AX_PTHREAD_ZOS_MISSING
|
|
# endif
|
|
],
|
|
[AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
|
|
;;
|
|
|
|
solaris*)
|
|
|
|
# On Solaris (at least, for some versions), libc contains stubbed
|
|
# (non-functional) versions of the pthreads routines, so link-based
|
|
# tests will erroneously succeed. (N.B.: The stubs are missing
|
|
# pthread_cleanup_push, or rather a function called by this macro,
|
|
# so we could check for that, but who knows whether they'll stub
|
|
# that too in a future libc.) So we'll check first for the
|
|
# standard Solaris way of linking pthreads (-mt -lpthread).
|
|
|
|
ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags"
|
|
;;
|
|
esac
|
|
|
|
# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)
|
|
|
|
AS_IF([test "x$GCC" = "xyes"],
|
|
[ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"])
|
|
|
|
# The presence of a feature test macro requesting re-entrant function
|
|
# definitions is, on some systems, a strong hint that pthreads support is
|
|
# correctly enabled
|
|
|
|
case $host_os in
|
|
darwin* | hpux* | linux* | osf* | solaris*)
|
|
ax_pthread_check_macro="_REENTRANT"
|
|
;;
|
|
|
|
aix*)
|
|
ax_pthread_check_macro="_THREAD_SAFE"
|
|
;;
|
|
|
|
*)
|
|
ax_pthread_check_macro="--"
|
|
;;
|
|
esac
|
|
AS_IF([test "x$ax_pthread_check_macro" = "x--"],
|
|
[ax_pthread_check_cond=0],
|
|
[ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])
|
|
|
|
# Are we compiling with Clang?
|
|
|
|
AC_CACHE_CHECK([whether $CC is Clang],
|
|
[ax_cv_PTHREAD_CLANG],
|
|
[ax_cv_PTHREAD_CLANG=no
|
|
# Note that Autoconf sets GCC=yes for Clang as well as GCC
|
|
if test "x$GCC" = "xyes"; then
|
|
AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
|
|
[/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
|
|
# if defined(__clang__) && defined(__llvm__)
|
|
AX_PTHREAD_CC_IS_CLANG
|
|
# endif
|
|
],
|
|
[ax_cv_PTHREAD_CLANG=yes])
|
|
fi
|
|
])
|
|
ax_pthread_clang="$ax_cv_PTHREAD_CLANG"
|
|
|
|
ax_pthread_clang_warning=no
|
|
|
|
# Clang needs special handling, because older versions handle the -pthread
|
|
# option in a rather... idiosyncratic way
|
|
|
|
if test "x$ax_pthread_clang" = "xyes"; then
|
|
|
|
# Clang takes -pthread; it has never supported any other flag
|
|
|
|
# (Note 1: This will need to be revisited if a system that Clang
|
|
# supports has POSIX threads in a separate library. This tends not
|
|
# to be the way of modern systems, but it's conceivable.)
|
|
|
|
# (Note 2: On some systems, notably Darwin, -pthread is not needed
|
|
# to get POSIX threads support; the API is always present and
|
|
# active. We could reasonably leave PTHREAD_CFLAGS empty. But
|
|
# -pthread does define _REENTRANT, and while the Darwin headers
|
|
# ignore this macro, third-party headers might not.)
|
|
|
|
PTHREAD_CFLAGS="-pthread"
|
|
PTHREAD_LIBS=
|
|
|
|
ax_pthread_ok=yes
|
|
|
|
# However, older versions of Clang make a point of warning the user
|
|
# that, in an invocation where only linking and no compilation is
|
|
# taking place, the -pthread option has no effect ("argument unused
|
|
# during compilation"). They expect -pthread to be passed in only
|
|
# when source code is being compiled.
|
|
#
|
|
# Problem is, this is at odds with the way Automake and most other
|
|
# C build frameworks function, which is that the same flags used in
|
|
# compilation (CFLAGS) are also used in linking. Many systems
|
|
# supported by AX_PTHREAD require exactly this for POSIX threads
|
|
# support, and in fact it is often not straightforward to specify a
|
|
# flag that is used only in the compilation phase and not in
|
|
# linking. Such a scenario is extremely rare in practice.
|
|
#
|
|
# Even though use of the -pthread flag in linking would only print
|
|
# a warning, this can be a nuisance for well-run software projects
|
|
# that build with -Werror. So if the active version of Clang has
|
|
# this misfeature, we search for an option to squash it.
|
|
|
|
AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
|
|
[ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
|
|
[ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
|
|
# Create an alternate version of $ac_link that compiles and
|
|
# links in two steps (.c -> .o, .o -> exe) instead of one
|
|
# (.c -> exe), because the warning occurs only in the second
|
|
# step
|
|
ax_pthread_save_ac_link="$ac_link"
|
|
ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
|
|
ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
|
|
ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
|
|
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
|
|
AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
|
|
CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
|
|
ac_link="$ax_pthread_save_ac_link"
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
|
|
[ac_link="$ax_pthread_2step_ac_link"
|
|
AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
|
|
[break])
|
|
])
|
|
done
|
|
ac_link="$ax_pthread_save_ac_link"
|
|
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
|
|
ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
|
|
])
|
|
|
|
case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
|
|
no | unknown) ;;
|
|
*) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
|
|
esac
|
|
|
|
fi # $ax_pthread_clang = yes
|
|
|
|
if test "x$ax_pthread_ok" = "xno"; then
|
|
for ax_pthread_try_flag in $ax_pthread_flags; do
|
|
|
|
case $ax_pthread_try_flag in
|
|
none)
|
|
AC_MSG_CHECKING([whether pthreads work without any flags])
|
|
;;
|
|
|
|
-mt,pthread)
|
|
AC_MSG_CHECKING([whether pthreads work with -mt -lpthread])
|
|
PTHREAD_CFLAGS="-mt"
|
|
PTHREAD_LIBS="-lpthread"
|
|
;;
|
|
|
|
-*)
|
|
AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
|
|
PTHREAD_CFLAGS="$ax_pthread_try_flag"
|
|
;;
|
|
|
|
pthread-config)
|
|
AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
|
|
AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
|
|
PTHREAD_CFLAGS="`pthread-config --cflags`"
|
|
PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
|
|
;;
|
|
|
|
*)
|
|
AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
|
|
PTHREAD_LIBS="-l$ax_pthread_try_flag"
|
|
;;
|
|
esac
|
|
|
|
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
ax_pthread_save_LIBS="$LIBS"
|
|
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
LIBS="$PTHREAD_LIBS $LIBS"
|
|
|
|
# Check for various functions. We must include pthread.h,
|
|
# since some functions may be macros. (On the Sequent, we
|
|
# need a special flag -Kthread to make this header compile.)
|
|
# We check for pthread_join because it is in -lpthread on IRIX
|
|
# while pthread_create is in libc. We check for pthread_attr_init
|
|
# due to DEC craziness with -lpthreads. We check for
|
|
# pthread_cleanup_push because it is one of the few pthread
|
|
# functions on Solaris that doesn't have a non-functional libc stub.
|
|
# We try pthread_create on general principles.
|
|
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
|
|
# if $ax_pthread_check_cond
|
|
# error "$ax_pthread_check_macro must be defined"
|
|
# endif
|
|
static void routine(void *a) { a = 0; }
|
|
static void *start_routine(void *a) { return a; }],
|
|
[pthread_t th; pthread_attr_t attr;
|
|
pthread_create(&th, 0, start_routine, 0);
|
|
pthread_join(th, 0);
|
|
pthread_attr_init(&attr);
|
|
pthread_cleanup_push(routine, 0);
|
|
pthread_cleanup_pop(0) /* ; */])],
|
|
[ax_pthread_ok=yes],
|
|
[])
|
|
|
|
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
LIBS="$ax_pthread_save_LIBS"
|
|
|
|
AC_MSG_RESULT([$ax_pthread_ok])
|
|
AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])
|
|
|
|
PTHREAD_LIBS=""
|
|
PTHREAD_CFLAGS=""
|
|
done
|
|
fi
|
|
|
|
# Various other checks:
|
|
if test "x$ax_pthread_ok" = "xyes"; then
|
|
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
ax_pthread_save_LIBS="$LIBS"
|
|
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
LIBS="$PTHREAD_LIBS $LIBS"
|
|
|
|
# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
|
|
AC_CACHE_CHECK([for joinable pthread attribute],
|
|
[ax_cv_PTHREAD_JOINABLE_ATTR],
|
|
[ax_cv_PTHREAD_JOINABLE_ATTR=unknown
|
|
for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
|
|
[int attr = $ax_pthread_attr; return attr /* ; */])],
|
|
[ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
|
|
[])
|
|
done
|
|
])
|
|
AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
|
|
test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
|
|
test "x$ax_pthread_joinable_attr_defined" != "xyes"],
|
|
[AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
|
|
[$ax_cv_PTHREAD_JOINABLE_ATTR],
|
|
[Define to necessary symbol if this constant
|
|
uses a non-standard name on your system.])
|
|
ax_pthread_joinable_attr_defined=yes
|
|
])
|
|
|
|
AC_CACHE_CHECK([whether more special flags are required for pthreads],
|
|
[ax_cv_PTHREAD_SPECIAL_FLAGS],
|
|
[ax_cv_PTHREAD_SPECIAL_FLAGS=no
|
|
case $host_os in
|
|
solaris*)
|
|
ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
|
|
;;
|
|
esac
|
|
])
|
|
AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
|
|
test "x$ax_pthread_special_flags_added" != "xyes"],
|
|
[PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
|
|
ax_pthread_special_flags_added=yes])
|
|
|
|
AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
|
|
[ax_cv_PTHREAD_PRIO_INHERIT],
|
|
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
|
|
[[int i = PTHREAD_PRIO_INHERIT;]])],
|
|
[ax_cv_PTHREAD_PRIO_INHERIT=yes],
|
|
[ax_cv_PTHREAD_PRIO_INHERIT=no])
|
|
])
|
|
AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
|
|
test "x$ax_pthread_prio_inherit_defined" != "xyes"],
|
|
[AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
|
|
ax_pthread_prio_inherit_defined=yes
|
|
])
|
|
|
|
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
LIBS="$ax_pthread_save_LIBS"
|
|
|
|
# More AIX lossage: compile with *_r variant
|
|
if test "x$GCC" != "xyes"; then
|
|
case $host_os in
|
|
aix*)
|
|
AS_CASE(["x/$CC"],
|
|
[x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
|
|
[#handle absolute path differently from PATH based program lookup
|
|
AS_CASE(["x$CC"],
|
|
[x/*],
|
|
[AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
|
|
[AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
|
|
;;
|
|
esac
|
|
fi
|
|
fi
|
|
|
|
test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
|
|
|
|
AC_SUBST([PTHREAD_LIBS])
|
|
AC_SUBST([PTHREAD_CFLAGS])
|
|
AC_SUBST([PTHREAD_CC])
|
|
|
|
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
|
|
if test "x$ax_pthread_ok" = "xyes"; then
|
|
ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
|
|
:
|
|
else
|
|
ax_pthread_ok=no
|
|
$2
|
|
fi
|
|
AC_LANG_POP
|
|
])dnl AX_PTHREAD
|