Hi!
On Sat, 2010-01-09 at 21:28:33 +0100, Robert Millan wrote:
> On Sat, Jan 09, 2010 at 02:08:07PM -0600, Steve M. Robbins wrote:
> > The code in question is:
> >
> > unsigned thread::hardware_concurrency()
> > {
> > #if defined(PTW32_VERSION) || defined(__hpux)
> > return pthread_num_processors_np();
> > #elif defined(_GNU_SOURCE)
> > return get_nprocs();
>
> It seems that get_nprocs() is always implemented by Glibc. Worst-case it'd
> be a dummy stub. I'd just try to figure out why <sys/sysinfo.h> is not
> included or not providing its declaration.
In addition to what everyone has said, _GNU_SOURCE seems the wrong check
to me, that's a user definition to request the system to expose GNU
extensions, if the code is trying to check for a glibc implementation
it should be using __GLIBC__ instead, or I guess better yet, it should
be checking for the functions availability at build time and use the
best one found.
regards,
guillem
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