diff options
Diffstat (limited to '')
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | m4/ax_pthread.m4 (renamed from m4/acx_pthread.m4) | 232 |
2 files changed, 132 insertions, 102 deletions
diff --git a/configure.ac b/configure.ac index 9bc1e895..88d35241 100644 --- a/configure.ac +++ b/configure.ac @@ -431,7 +431,7 @@ AC_USE_SYSTEM_EXTENSIONS if test "x$enable_threads" = xyes; then echo echo "Threading support:" - ACX_PTHREAD + AX_PTHREAD LIBS="$LIBS $PTHREAD_LIBS" AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS" CC="$PTHREAD_CC" diff --git a/m4/acx_pthread.m4 b/m4/ax_pthread.m4 index d2b11694..d90de34d 100644 --- a/m4/acx_pthread.m4 +++ b/m4/ax_pthread.m4 @@ -1,93 +1,94 @@ -##### 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. +# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the +# PTHREAD_PRIO_INHERIT symbol is defined when compiling with +# PTHREAD_CFLAGS. # -# 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. +# 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. # -# LAST MODIFICATION +# 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. # -# 2007-07-29 +# Updated for Autoconf 2.68 by Daniel Richard G. # -# COPYLEFT +# LICENSE # -# Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.edu> +# 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 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 18 + +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 +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 True64 or Sequent). @@ -102,9 +103,9 @@ if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then 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"$ax_pthread_ok" = xno; then PTHREAD_LIBS="" PTHREAD_CFLAGS="" fi @@ -122,7 +123,7 @@ fi # which indicates that we try without any flags at all, and "pthread-config" # which is a program returning the flags for the Pth emulation library. -acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" +ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" # The ordering *is* (sometimes) important. Some notes on the # individual items follow: @@ -144,8 +145,8 @@ acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -m # --thread-safe: KAI C++ # pthread-config: use pthread-config program (for GNU Pth library) -case "${host_cpu}-${host_os}" in - *solaris*) +case ${host_os} in + solaris*) # On Solaris (at least, for some versions), libc contains stubbed # (non-functional) versions of the pthreads routines, so link-based @@ -155,12 +156,16 @@ case "${host_cpu}-${host_os}" in # 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) @@ -172,12 +177,12 @@ for flag in $acx_pthread_flags; do PTHREAD_CFLAGS="$flag" ;; - pthread-config) - AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no) - if test x"$acx_pthread_config" = xno; then continue; fi - PTHREAD_CFLAGS="`pthread-config --cflags`" - PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" - ;; + pthread-config) + AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no) + if test x"$ax_pthread_config" = xno; then continue; fi + PTHREAD_CFLAGS="`pthread-config --cflags`" + PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" + ;; *) AC_MSG_CHECKING([for the pthreads library -l$flag]) @@ -199,17 +204,23 @@ for flag in $acx_pthread_flags; do # pthread_cleanup_push because it is one of the few pthread # functions on Solaris that doesn't have a non-functional libc stub. # We try pthread_create on general principles. - AC_TRY_LINK([#include <pthread.h>], - [pthread_t th; pthread_join(th, 0); - pthread_attr_init(0); pthread_cleanup_push(0, 0); - pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], - [acx_pthread_ok=yes]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h> + static void routine(void *a) { a = 0; } + static void *start_routine(void *a) { return a; }], + [pthread_t th; pthread_attr_t attr; + pthread_create(&th, 0, start_routine, 0); + pthread_join(th, 0); + pthread_attr_init(&attr); + pthread_cleanup_push(routine, 0); + pthread_cleanup_pop(0) /* ; */])], + [ax_pthread_ok=yes], + []) LIBS="$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$ax_pthread_ok" = xyes; then break; fi @@ -219,19 +230,21 @@ done fi # Various other checks: -if test "x$acx_pthread_ok" = xyes; then +if test "x$ax_pthread_ok" = xyes; then save_LIBS="$LIBS" LIBS="$PTHREAD_LIBS $LIBS" save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. - AC_MSG_CHECKING([for joinable pthread attribute]) - attr_name=unknown - for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do - AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;], - [attr_name=$attr; break]) - done + 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], + []) + done AC_MSG_RESULT($attr_name) if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name, @@ -241,24 +254,41 @@ if test "x$acx_pthread_ok" = xyes; then AC_MSG_CHECKING([if more special flags are required for pthreads]) flag=no - case "${host_cpu}-${host_os}" in - *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";; - *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";; + case ${host_os} in + aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";; + osf* | hpux*) flag="-D_REENTRANT";; + solaris*) + if test "$GCC" = "yes"; then + flag="-D_REENTRANT" + else + flag="-mt -D_REENTRANT" + fi + ;; esac AC_MSG_RESULT(${flag}) if test "x$flag" != xno; then PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" fi + AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], + ax_cv_PTHREAD_PRIO_INHERIT, [ + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[#include <pthread.h>]], [[int i = PTHREAD_PRIO_INHERIT;]])], + [ax_cv_PTHREAD_PRIO_INHERIT=yes], + [ax_cv_PTHREAD_PRIO_INHERIT=no]) + ]) + AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"], + AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], 1, [Have PTHREAD_PRIO_INHERIT.])) + LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" # More AIX lossage: must compile with xlc_r or cc_r - if test x"$GCC" != xyes; then + if test x"$GCC" != xyes; then AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC}) else PTHREAD_CC=$CC - fi + fi else PTHREAD_CC="$CC" fi @@ -268,12 +298,12 @@ AC_SUBST(PTHREAD_CFLAGS) AC_SUBST(PTHREAD_CC) # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: -if test x"$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 +AC_LANG_POP +])dnl AX_PTHREAD |