diff options
Diffstat (limited to 'm4/ax_pthread.m4')
| -rw-r--r-- | m4/ax_pthread.m4 | 98 |
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 |