* builds/unix/configure.raw: Check for `pthread', also check if it is working.GSoC-2020-priyesh
Priyesh Kumar
4 years ago
parent
7e6b43edf3
commit
2579d0acea
2 changed files with 527 additions and 0 deletions
@ -0,0 +1,507 @@ |
||||
# =========================================================================== |
||||
# 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> |
||||
# Copyright (c) 2019 Marc Stevens <marc.stevens@cwi.nl> |
||||
# |
||||
# 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 27 |
||||
|
||||
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 with a "," contain both |
||||
# C compiler flags (before ",") and linker flags (after ","). Other items |
||||
# starting with a "-" are C compiler flags, and remaining 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,-lpthread pthread $ax_pthread_flags" |
||||
;; |
||||
esac |
||||
|
||||
# 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="$ax_cv_PTHREAD_CLANG" |
||||
|
||||
|
||||
# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC) |
||||
|
||||
# Note that for GCC and Clang -pthread generally implies -lpthread, |
||||
# except when -nostdlib is passed. |
||||
# This is problematic using libtool to build C++ shared libraries with pthread: |
||||
# [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25460 |
||||
# [2] https://bugzilla.redhat.com/show_bug.cgi?id=661333 |
||||
# [3] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468555 |
||||
# To solve this, first try -pthread together with -lpthread for GCC |
||||
|
||||
AS_IF([test "x$GCC" = "xyes"], |
||||
[ax_pthread_flags="-pthread,-lpthread -pthread -pthreads $ax_pthread_flags"]) |
||||
|
||||
# Clang takes -pthread (never supported any other flag), but we'll try with -lpthread first |
||||
|
||||
AS_IF([test "x$ax_pthread_clang" = "xyes"], |
||||
[ax_pthread_flags="-pthread,-lpthread -pthread"]) |
||||
|
||||
|
||||
# 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($ax_pthread_check_macro)"]) |
||||
|
||||
|
||||
if test "x$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]) |
||||
;; |
||||
|
||||
*,*) |
||||
PTHREAD_CFLAGS=`echo $ax_pthread_try_flag | sed "s/^\(.*\),\(.*\)$/\1/"` |
||||
PTHREAD_LIBS=`echo $ax_pthread_try_flag | sed "s/^\(.*\),\(.*\)$/\2/"` |
||||
AC_MSG_CHECKING([whether pthreads work with "$PTHREAD_CFLAGS" and "$PTHREAD_LIBS"]) |
||||
;; |
||||
|
||||
-*) |
||||
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 *some_global = NULL; |
||||
static void routine(void *a) |
||||
{ |
||||
/* To avoid any unused-parameter or |
||||
unused-but-set-parameter warning. */ |
||||
some_global = a; |
||||
} |
||||
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 |
||||
|
||||
|
||||
# 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.) |
||||
|
||||
# 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 # $ax_pthread_clang = yes |
||||
|
||||
|
||||
|
||||
# Various other checks: |
||||
if test "x$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 $PTHREAD_CFLAGS" |
||||
ax_pthread_special_flags_added=yes]) |
||||
|
||||
AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], |
||||
[ax_cv_PTHREAD_PRIO_INHERIT], |
||||
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], |
||||
[[int i = PTHREAD_PRIO_INHERIT; |
||||
return i;]])], |
||||
[ax_cv_PTHREAD_PRIO_INHERIT=yes], |
||||
[ax_cv_PTHREAD_PRIO_INHERIT=no]) |
||||
]) |
||||
AS_IF([test "x$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 |
||||
Loading…
Reference in new issue