aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--m4/ax_pthread.m498
1 files changed, 62 insertions, 36 deletions
diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4
index 2152a80a..d90de34d 100644
--- a/m4/ax_pthread.m4
+++ b/m4/ax_pthread.m4
@@ -33,6 +33,10 @@
# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
# (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
#
+# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
+# PTHREAD_PRIO_INHERIT symbol is defined when compiling with
+# PTHREAD_CFLAGS.
+#
# 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
@@ -45,9 +49,12 @@
# Alejandro Forero Cuervo to the autoconf macro repository. We are also
# grateful for the helpful feedback of numerous users.
#
+# Updated for Autoconf 2.68 by Daniel Richard G.
+#
# LICENSE
#
# 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
@@ -75,13 +82,12 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 11
+#serial 18
AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
AC_DEFUN([AX_PTHREAD], [
AC_REQUIRE([AC_CANONICAL_HOST])
-AC_LANG_SAVE
-AC_LANG_C
+AC_LANG_PUSH([C])
ax_pthread_ok=no
# We used to check for pthread.h first, but this fails if pthread.h
@@ -139,8 +145,8 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt
# --thread-safe: KAI C++
# pthread-config: use pthread-config program (for GNU Pth library)
-case "${host_cpu}-${host_os}" in
- *solaris*)
+case ${host_os} in
+ solaris*)
# On Solaris (at least, for some versions), libc contains stubbed
# (non-functional) versions of the pthreads routines, so link-based
@@ -153,9 +159,9 @@ case "${host_cpu}-${host_os}" in
ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
;;
- *-darwin*)
- ax_pthread_flags="-pthread $ax_pthread_flags"
- ;;
+ darwin*)
+ ax_pthread_flags="-pthread $ax_pthread_flags"
+ ;;
esac
if test x"$ax_pthread_ok" = xno; then
@@ -171,12 +177,12 @@ for flag in $ax_pthread_flags; do
PTHREAD_CFLAGS="$flag"
;;
- pthread-config)
- AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
- if test x"$ax_pthread_config" = xno; then continue; fi
- PTHREAD_CFLAGS="`pthread-config --cflags`"
- PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
- ;;
+ pthread-config)
+ AC_CHECK_PROG(ax_pthread_config, pthread-config, yes, no)
+ if test x"$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])
@@ -198,16 +204,17 @@ for flag in $ax_pthread_flags; do
# pthread_cleanup_push because it is one of the few pthread
# functions on Solaris that doesn't have a non-functional libc stub.
# We try pthread_create on general principles.
- AC_TRY_LINK([#include <pthread.h>
- static void routine(void* a) {a=0;}
- static void* start_routine(void* a) {return a;}],
- [pthread_t th; pthread_attr_t attr;
- pthread_create(&th,0,start_routine,0);
- pthread_join(th, 0);
- pthread_attr_init(&attr);
- pthread_cleanup_push(routine, 0);
- pthread_cleanup_pop(0); ],
- [ax_pthread_ok=yes])
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
+ static void routine(void *a) { a = 0; }
+ static void *start_routine(void *a) { return a; }],
+ [pthread_t th; pthread_attr_t attr;
+ pthread_create(&th, 0, start_routine, 0);
+ pthread_join(th, 0);
+ pthread_attr_init(&attr);
+ pthread_cleanup_push(routine, 0);
+ pthread_cleanup_pop(0) /* ; */])],
+ [ax_pthread_ok=yes],
+ [])
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
@@ -230,12 +237,14 @@ if test "x$ax_pthread_ok" = xyes; then
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, $attr_name,
@@ -245,24 +254,41 @@ if test "x$ax_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
@@ -279,5 +305,5 @@ else
ax_pthread_ok=no
$2
fi
-AC_LANG_RESTORE
+AC_LANG_POP
])dnl AX_PTHREAD