threading in FreeBSD (acx_pthreads)

John Baldwin jhb at freebsd.org
Mon Feb 4 07:25:52 PST 2008


On Monday 04 February 2008 06:31:23 am Karl H. Beckers wrote:
> Hi all,
> 
> could you please include me directly in your replies ... I haven't
> subscribed.
> 
> I'm trying to move my configure.in from manual threading libs detection
> to acx_pthreads. That, however, prefers -kthread over -pthread where I
> previously did this:
> 
>                 if ( test -x /sbin/sysctl ) ; then
>                         ac_my_freebsd_release=`/sbin/sysctl -n
> kern.osreldate`
>                 else
>                         ac_my_freebsd_release=`/usr/sbin/sysctl -n
> kern.osreldate`
>                 fi
>                 if ( expr ${ac_my_freebsd_release} \< 500016 ) ; then
>                         LIBS="${LIBS} -pthread"
>                 else
>                         LIBS="${LIBS} -lc_r"
>                 fi
> 
> Could anybody make a recommendation of the propert thing to do on
> FreeBSD? Is the acx_pthread assumption OK, or should I patch that?

Just always use -pthread.  -lc_r is wrong on 6.x+ anyway, but -pthread
should always work.

-- 
John Baldwin


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