-##### http://autoconf-archive.cryp.to/acx_pthread.html
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_pthread.html
+# ===========================================================================
#
# SYNOPSIS
#
-# ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+# 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.)
+# 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.)
+# 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 link it with them as well. e.g. you should link
-# with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
-# $LIBS
+# NOTE: You are assumed to not only compile your program with these flags,
+# but also link it with them as well. e.g. you should link with
+# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
#
-# If you are only building threads programs, you may wish to use
-# these variables in your default LIBS, CFLAGS, and CC:
+# If you are only building threads programs, you may wish to use these
+# variables in your default LIBS, CFLAGS, and CC:
#
-# LIBS="$PTHREAD_LIBS $LIBS"
-# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-# CC="$PTHREAD_CC"
+# 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, defines PTHREAD_CREATE_JOINABLE to
-# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
+# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
+# (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
#
-# 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.
+# 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.
+# 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.
#
-# LAST MODIFICATION
+# LICENSE
#
-# 2007-07-29
+# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
#
-# COPYLEFT
-#
-# Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.edu>
-#
-# 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 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.
+# 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
-# <http://www.gnu.org/licenses/>.
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <http://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.
+# 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 Macro 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.
+# 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.
-AC_DEFUN([ACX_PTHREAD], [
+#serial 11
+
+AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
+AC_DEFUN([AX_PTHREAD], [
AC_REQUIRE([AC_CANONICAL_HOST])
AC_LANG_SAVE
AC_LANG_C
-acx_pthread_ok=no
+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 True64 or Sequent).
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
- AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
- AC_MSG_RESULT($acx_pthread_ok)
- if test x"$acx_pthread_ok" = xno; then
+ AC_TRY_LINK_FUNC(pthread_join, ax_pthread_ok=yes)
+ AC_MSG_RESULT($ax_pthread_ok)
+ if test x"$ax_pthread_ok" = xno; then
PTHREAD_LIBS=""
PTHREAD_CFLAGS=""
fi
# 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.
-acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
# The ordering *is* (sometimes) important. Some notes on the
# individual items follow:
# who knows whether they'll stub that too in a future libc.) So,
# we'll just look for -pthreads and -lpthread first:
- acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+ ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
;;
+
+ *-darwin*)
+ ax_pthread_flags="-pthread $ax_pthread_flags"
+ ;;
esac
-if test x"$acx_pthread_ok" = xno; then
-for flag in $acx_pthread_flags; do
+if test x"$ax_pthread_ok" = xno; then
+for flag in $ax_pthread_flags; do
case $flag in
none)
;;
pthread-config)
- AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
- if test x"$acx_pthread_config" = xno; then continue; fi
+ AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
+ if test x"$ax_pthread_config" = xno; then continue; fi
PTHREAD_CFLAGS="`pthread-config --cflags`"
PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
;;
# pthread_cleanup_push because it is one of the few pthread
# functions on Solaris that doesn't have a non-functional libc stub.
# We try pthread_create on general principles.
- AC_TRY_LINK([#include <pthread.h>],
- [pthread_t th; pthread_join(th, 0);
- pthread_attr_init(0); pthread_cleanup_push(0, 0);
- pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
- [acx_pthread_ok=yes])
+ AC_TRY_LINK([#include <pthread.h>
+ static void routine(void* a) {a=0;}
+ static void* start_routine(void* a) {return a;}],
+ [pthread_t th; pthread_attr_t attr;
+ pthread_create(&th,0,start_routine,0);
+ pthread_join(th, 0);
+ pthread_attr_init(&attr);
+ pthread_cleanup_push(routine, 0);
+ pthread_cleanup_pop(0); ],
+ [ax_pthread_ok=yes])
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
- AC_MSG_RESULT($acx_pthread_ok)
- if test "x$acx_pthread_ok" = xyes; then
+ AC_MSG_RESULT($ax_pthread_ok)
+ if test "x$ax_pthread_ok" = xyes; then
break;
fi
fi
# Various other checks:
-if test "x$acx_pthread_ok" = xyes; then
+if test "x$ax_pthread_ok" = xyes; then
save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS $LIBS"
save_CFLAGS="$CFLAGS"
AC_SUBST(PTHREAD_CC)
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$acx_pthread_ok" = xyes; then
+if test x"$ax_pthread_ok" = xyes; then
ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
:
else
- acx_pthread_ok=no
+ ax_pthread_ok=no
$2
fi
AC_LANG_RESTORE
-])dnl ACX_PTHREAD
+])dnl AX_PTHREAD
projects / platform / upstream / xz.git / commitdiff