Subj : Re: posix semaphores on AIX
To   : comp.programming.threads
From : David Hopwood
Date : Fri Jul 29 2005 01:03 pm

jpknott@gmail.com wrote:
> Are posix semaphores supported on AIX (5.1 - 5.2)?
> 
> I am trying to port some thread-aware code which runs fine on linux and
> Solaris.   However, on AIX when I call sem_open I am getting -1, with
> errno set to ENOSYS.
> 
> It seems rather incredible that posix semaphores are simply not
> implemented, so I am guessing that I am either linking incorrectly, or
> perhaps not defining some critical macro when compiling.

<http://ac-archive.sourceforge.net/Installed_Packages/acx_pthread.html>
suggests that using pthreads on AIX may require compiling with "cc_r".
I don't know what the magic incantation is to make gcc work with pthreads
on AIX (but see <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20705>).

-- 
David Hopwood <david.nospam.hopwood@blueyonder.co.uk>

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