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Date:      Mon, 2 May 2022 10:37:00 -0700
From:      Steve Kargl <sgk@troutmask.apl.washington.edu>
To:        Ed Maste <emaste@freebsd.org>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: Profiled libraries on freebsd-current
Message-ID:  <YnAWvEvQaNgzTFYn@troutmask.apl.washington.edu>
In-Reply-To: <CAPyFy2DJp6ycnqsZMH%2B094B%2BhykYrF4T5PN3qHm9qogVkQm9dQ@mail.gmail.com>
References:  <Ymt%2BICLaQPxx2knx@troutmask.apl.washington.edu> <CAPyFy2CuSFd7zm8BvrWYDv%2BEgM0Ryz-bxwWNzUEMEkm0fruokA@mail.gmail.com> <Ym1XE9QSSvIy/4uo@troutmask.apl.washington.edu> <CAPyFy2AcKcT3NmpA5cs0WG4B7gPCJwdax%2BPp02YHEQBmJ10ZtQ@mail.gmail.com> <Ym6tJn60RmqQVsrv@troutmask.apl.washington.edu> <CAPyFy2DJp6ycnqsZMH%2B094B%2BhykYrF4T5PN3qHm9qogVkQm9dQ@mail.gmail.com>

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On Mon, May 02, 2022 at 12:32:25PM -0400, Ed Maste wrote:
> On Sun, 1 May 2022 at 11:54, Steve Kargl
> <sgk@troutmask.apl.washington.edu> wrote:
> >
> > diff --git a/gcc/config/freebsd-spec.h b/gcc/config/freebsd-spec.h
> > index 594487829b5..1e8ab2e1827 100644
> > --- a/gcc/config/freebsd-spec.h
> > +++ b/gcc/config/freebsd-spec.h
> > @@ -93,14 +93,22 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
> >     (similar to the default, except no -lg, and no -p).  */
> >
> >  #ifdef FBSD_NO_THREADS
> 
> I wonder if we can simplify things now, and remove this
> `FBSD_NO_THREADS` case. I didn't see anything similar in other GCC
> targets I looked at.

That I don't know.  FBSD_NO_THREADS is defined in freebsd-nthr.h.
In fact, it's the only thing in that header (except copyright
broilerplate).  freebsd-nthr.h only appears in config.gcc and
seems to only get added to the build if someone runs configure
with --enable-threads=no.  Looking at my last config.log for
gcc trunk, I see "Thread model: posix", which appears to be
the default case or if someone does --enable-threads=yes or
--enable-threads=posix.  So, I suppose it comes down to 
two questions: (1) is libpthread.* available on all supported
targets and versions? (2) does anyone build gcc without 
threads support?

-- 
Steve



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