Build: Upgrade m4/acx_pthread.m4 to the latest version.
It was renamed to ax_pthread.m4 in Autoconf Archive.
This commit is contained in:
Lasse Collin
parent
bfac2be502
commit
7b6ffc9864
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@ -431,7 +431,7 @@ AC_USE_SYSTEM_EXTENSIONS
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if test "x$enable_threads" = xyes; then
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echo
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echo "Threading support:"
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ACX_PTHREAD
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AX_PTHREAD
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LIBS="$LIBS $PTHREAD_LIBS"
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AM_CFLAGS="$AM_CFLAGS $PTHREAD_CFLAGS"
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CC="$PTHREAD_CC"
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@ -1,93 +1,94 @@
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##### http://autoconf-archive.cryp.to/acx_pthread.html
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_pthread.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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#
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# DESCRIPTION
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#
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# This macro figures out how to build C programs using POSIX threads.
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# It sets the PTHREAD_LIBS output variable to the threads library and
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# linker flags, and the PTHREAD_CFLAGS output variable to any special
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# C compiler flags that are needed. (The user can also force certain
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# compiler flags/libs to be tested by setting these environment
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# variables.)
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# This macro figures out how to build C programs using POSIX threads. It
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# sets the PTHREAD_LIBS output variable to the threads library and linker
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# flags, and the PTHREAD_CFLAGS output variable to any special C compiler
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# flags that are needed. (The user can also force certain compiler
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# flags/libs to be tested by setting these environment variables.)
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#
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# Also sets PTHREAD_CC to any special C compiler that is needed for
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# multi-threaded programs (defaults to the value of CC otherwise).
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# (This is necessary on AIX to use the special cc_r compiler alias.)
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# multi-threaded programs (defaults to the value of CC otherwise). (This
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# is necessary on AIX to use the special cc_r compiler alias.)
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#
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# NOTE: You are assumed to not only compile your program with these
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# flags, but also link it with them as well. e.g. you should link
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# with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
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# $LIBS
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# NOTE: You are assumed to not only compile your program with these flags,
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# but also link it with them as well. e.g. you should link with
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# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
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#
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# If you are only building threads programs, you may wish to use
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# these variables in your default LIBS, CFLAGS, and CC:
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# If you are only building threads programs, you may wish to use these
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# variables in your default LIBS, CFLAGS, and CC:
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#
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# LIBS="$PTHREAD_LIBS $LIBS"
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# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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# CC="$PTHREAD_CC"
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# LIBS="$PTHREAD_LIBS $LIBS"
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# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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# CC="$PTHREAD_CC"
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#
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# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
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# constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
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# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
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# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
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# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
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# (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
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#
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# ACTION-IF-FOUND is a list of shell commands to run if a threads
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# library is found, and ACTION-IF-NOT-FOUND is a list of commands to
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# run it if it is not found. If ACTION-IF-FOUND is not specified, the
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# default action will define HAVE_PTHREAD.
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# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
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# PTHREAD_PRIO_INHERIT symbol is defined when compiling with
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# PTHREAD_CFLAGS.
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#
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# Please let the authors know if this macro fails on any platform, or
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# if you have any other suggestions or comments. This macro was based
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# on work by SGJ on autoconf scripts for FFTW (http://www.fftw.org/)
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# (with help from M. Frigo), as well as ac_pthread and hb_pthread
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# macros posted by Alejandro Forero Cuervo to the autoconf macro
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# repository. We are also grateful for the helpful feedback of
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# numerous users.
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# ACTION-IF-FOUND is a list of shell commands to run if a threads library
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# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
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# is not found. If ACTION-IF-FOUND is not specified, the default action
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# will define HAVE_PTHREAD.
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#
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# LAST MODIFICATION
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# Please let the authors know if this macro fails on any platform, or if
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# you have any other suggestions or comments. This macro was based on work
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# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
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# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
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# Alejandro Forero Cuervo to the autoconf macro repository. We are also
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# grateful for the helpful feedback of numerous users.
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#
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# 2007-07-29
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# Updated for Autoconf 2.68 by Daniel Richard G.
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#
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# COPYLEFT
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# LICENSE
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#
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# Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.edu>
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# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
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# Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
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#
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# This program is free software: you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright
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# owner gives unlimited permission to copy, distribute and modify the
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# configure scripts that are the output of Autoconf when processing
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# the Macro. You need not follow the terms of the GNU General Public
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# License when using or distributing such scripts, even though
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# portions of the text of the Macro appear in them. The GNU General
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# Public License (GPL) does govern all other use of the material that
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# constitutes the Autoconf Macro.
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the
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# Autoconf Macro released by the Autoconf Macro Archive. When you
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# make and distribute a modified version of the Autoconf Macro, you
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# may extend this special exception to the GPL to apply to your
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# modified version as well.
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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AC_DEFUN([ACX_PTHREAD], [
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#serial 18
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AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
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AC_DEFUN([AX_PTHREAD], [
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_LANG_SAVE
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AC_LANG_C
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acx_pthread_ok=no
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AC_LANG_PUSH([C])
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ax_pthread_ok=no
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# We used to check for pthread.h first, but this fails if pthread.h
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# requires special compiler flags (e.g. on True64 or Sequent).
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@ -102,9 +103,9 @@ if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
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save_LIBS="$LIBS"
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LIBS="$PTHREAD_LIBS $LIBS"
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AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
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AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
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AC_MSG_RESULT($acx_pthread_ok)
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if test x"$acx_pthread_ok" = xno; then
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AC_TRY_LINK_FUNC(pthread_join, ax_pthread_ok=yes)
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AC_MSG_RESULT($ax_pthread_ok)
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if test x"$ax_pthread_ok" = xno; then
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PTHREAD_LIBS=""
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PTHREAD_CFLAGS=""
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fi
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@ -122,7 +123,7 @@ fi
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# which indicates that we try without any flags at all, and "pthread-config"
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# which is a program returning the flags for the Pth emulation library.
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acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
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ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
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# The ordering *is* (sometimes) important. Some notes on the
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# individual items follow:
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@ -144,8 +145,8 @@ acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -m
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# --thread-safe: KAI C++
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# pthread-config: use pthread-config program (for GNU Pth library)
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case "${host_cpu}-${host_os}" in
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*solaris*)
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case ${host_os} in
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solaris*)
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# On Solaris (at least, for some versions), libc contains stubbed
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# (non-functional) versions of the pthreads routines, so link-based
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@ -155,12 +156,16 @@ case "${host_cpu}-${host_os}" in
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# who knows whether they'll stub that too in a future libc.) So,
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# we'll just look for -pthreads and -lpthread first:
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acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
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ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
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;;
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darwin*)
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ax_pthread_flags="-pthread $ax_pthread_flags"
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;;
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esac
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if test x"$acx_pthread_ok" = xno; then
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for flag in $acx_pthread_flags; do
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if test x"$ax_pthread_ok" = xno; then
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for flag in $ax_pthread_flags; do
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case $flag in
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none)
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@ -172,12 +177,12 @@ for flag in $acx_pthread_flags; do
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PTHREAD_CFLAGS="$flag"
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;;
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pthread-config)
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AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
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if test x"$acx_pthread_config" = xno; then continue; fi
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PTHREAD_CFLAGS="`pthread-config --cflags`"
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PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
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;;
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pthread-config)
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AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
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if test x"$ax_pthread_config" = xno; then continue; fi
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PTHREAD_CFLAGS="`pthread-config --cflags`"
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PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
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;;
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*)
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AC_MSG_CHECKING([for the pthreads library -l$flag])
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@ -199,17 +204,23 @@ for flag in $acx_pthread_flags; do
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# pthread_cleanup_push because it is one of the few pthread
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# functions on Solaris that doesn't have a non-functional libc stub.
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# We try pthread_create on general principles.
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AC_TRY_LINK([#include <pthread.h>],
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[pthread_t th; pthread_join(th, 0);
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pthread_attr_init(0); pthread_cleanup_push(0, 0);
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pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
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[acx_pthread_ok=yes])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
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static void routine(void *a) { a = 0; }
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static void *start_routine(void *a) { return a; }],
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[pthread_t th; pthread_attr_t attr;
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pthread_create(&th, 0, start_routine, 0);
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pthread_join(th, 0);
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pthread_attr_init(&attr);
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pthread_cleanup_push(routine, 0);
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pthread_cleanup_pop(0) /* ; */])],
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[ax_pthread_ok=yes],
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[])
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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AC_MSG_RESULT($acx_pthread_ok)
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if test "x$acx_pthread_ok" = xyes; then
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AC_MSG_RESULT($ax_pthread_ok)
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if test "x$ax_pthread_ok" = xyes; then
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break;
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fi
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@ -219,19 +230,21 @@ done
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fi
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# Various other checks:
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if test "x$acx_pthread_ok" = xyes; then
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if test "x$ax_pthread_ok" = xyes; then
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save_LIBS="$LIBS"
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LIBS="$PTHREAD_LIBS $LIBS"
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
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# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
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AC_MSG_CHECKING([for joinable pthread attribute])
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attr_name=unknown
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for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
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AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
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[attr_name=$attr; break])
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done
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AC_MSG_CHECKING([for joinable pthread attribute])
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attr_name=unknown
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for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
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AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
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[int attr = $attr; return attr /* ; */])],
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[attr_name=$attr; break],
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[])
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done
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AC_MSG_RESULT($attr_name)
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if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
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AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
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@ -241,24 +254,41 @@ if test "x$acx_pthread_ok" = xyes; then
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AC_MSG_CHECKING([if more special flags are required for pthreads])
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flag=no
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case "${host_cpu}-${host_os}" in
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*-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
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*solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
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case ${host_os} in
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aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";;
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osf* | hpux*) flag="-D_REENTRANT";;
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solaris*)
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if test "$GCC" = "yes"; then
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flag="-D_REENTRANT"
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else
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flag="-mt -D_REENTRANT"
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fi
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;;
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esac
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AC_MSG_RESULT(${flag})
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if test "x$flag" != xno; then
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PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
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fi
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AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
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ax_cv_PTHREAD_PRIO_INHERIT, [
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM([[#include <pthread.h>]], [[int i = PTHREAD_PRIO_INHERIT;]])],
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[ax_cv_PTHREAD_PRIO_INHERIT=yes],
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[ax_cv_PTHREAD_PRIO_INHERIT=no])
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])
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AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"],
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AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], 1, [Have PTHREAD_PRIO_INHERIT.]))
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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# More AIX lossage: must compile with xlc_r or cc_r
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if test x"$GCC" != xyes; then
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if test x"$GCC" != xyes; then
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AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
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else
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PTHREAD_CC=$CC
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fi
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fi
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else
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PTHREAD_CC="$CC"
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fi
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@ -268,12 +298,12 @@ AC_SUBST(PTHREAD_CFLAGS)
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AC_SUBST(PTHREAD_CC)
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# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
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if test x"$acx_pthread_ok" = xyes; then
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if test x"$ax_pthread_ok" = xyes; then
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ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
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:
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else
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acx_pthread_ok=no
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ax_pthread_ok=no
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$2
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fi
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AC_LANG_RESTORE
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])dnl ACX_PTHREAD
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AC_LANG_POP
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])dnl AX_PTHREAD
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