Build: Upgrade m4/acx_pthread.m4 to the latest version.
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Lasse Collin
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d05d6d65c4
commit
ab25b82a91
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@ -33,6 +33,10 @@
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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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# 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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# 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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@ -45,9 +49,12 @@
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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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# Updated for Autoconf 2.68 by Daniel Richard G.
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#
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# LICENSE
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#
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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 modify it
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# under the terms of the GNU General Public License as published by the
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@ -75,13 +82,12 @@
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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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#serial 11
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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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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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@ -139,8 +145,8 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt
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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 ${host_os} in
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solaris*)
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# On Solaris (at least, for some versions), libc contains stubbed
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# (non-functional) versions of the pthreads routines, so link-based
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@ -153,7 +159,7 @@ case "${host_cpu}-${host_os}" in
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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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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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@ -198,7 +204,7 @@ for flag in $ax_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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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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@ -206,8 +212,9 @@ for flag in $ax_pthread_flags; do
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pthread_join(th, 0);
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pthread_attr_init(&attr);
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pthread_cleanup_push(routine, 0);
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pthread_cleanup_pop(0); ],
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[ax_pthread_ok=yes])
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pthread_cleanup_pop(0) /* ; */])],
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[ax_pthread_ok=yes],
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[])
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LIBS="$save_LIBS"
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CFLAGS="$save_CFLAGS"
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@ -233,8 +240,10 @@ if test "x$ax_pthread_ok" = xyes; then
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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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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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@ -245,15 +254,32 @@ if test "x$ax_pthread_ok" = xyes; then
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AC_MSG_CHECKING([if more special flags are required for pthreads])
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flag=no
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case "${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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@ -279,5 +305,5 @@ else
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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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AC_LANG_POP
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])dnl AX_PTHREAD
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