-##### http://autoconf-archive.cryp.to/acx_pthread.html
+# ===========================================================================
+# http://autoconf-archive.cryp.to/acx_pthread.html
+# ===========================================================================
#
# SYNOPSIS
#
#
# 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"
#
-# 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
#
-# 2006-05-29
+# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
#
-# COPYLEFT
-#
-# Copyright (c) 2006 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 2 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, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+# 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], [
AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_PUSH([C])
+AC_LANG_SAVE
+AC_LANG_C
acx_pthread_ok=no
# We used to check for pthread.h first, but this fails if pthread.h
# 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>]], [[pthread_t th; pthread_join(th, 0);
+ 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],[])
+ pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+ [acx_pthread_ok=yes])
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
AC_MSG_CHECKING([for joinable pthread attribute])
attr_name=unknown
for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[int attr=$attr; return attr;]])],[attr_name=$attr; break],[])
+ AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
+ [attr_name=$attr; break])
done
AC_MSG_RESULT($attr_name)
if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
acx_pthread_ok=no
$2
fi
-AC_LANG_POP([])
+AC_LANG_RESTORE
])dnl ACX_PTHREAD
projects / m6w6 / libmemcached / blobdiff