GNU bug report logs - #9852
24.0.90; pthread_sigmask() check is bogus when HAVE_PTHREAD is defined

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Nali Toja <nalitoja <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.90; pthread_sigmask() check is bogus when HAVE_PTHREAD is defined
Date: Sun, 23 Oct 2011 21:24:52 +0000

emacs configure detects (via gnulib) pthread_sigmask even when there is
a stub in libc, marks it broken with

  PTHREAD_SIGMASK_INEFFECTIVE
  PTHREAD_SIGMASK_UNBLOCK_BUG

and links with LIB_PTHREAD during build. What if the version in
LIB_PTHREAD is not broken? gnulib would still wrap it with code
that may not work as expected.
  
forwarding http://www.freebsd.org/cgi/query-pr.cgi?pr=ports/161911
it adds -lpthread to LDFLAGS as a workaround
--
In GNU Emacs 24.0.90.9 (amd64-unknown-freebsd9.9)
 of 2011-10-23 on hidden
configured using `configure  '--without-x'

Message #8 received at 9852 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Nali Toja <nalitoja <at> gmail.com>
Cc: 9852 <at> debbugs.gnu.org
Subject: Re: pthread_sigmask() check is bogus when HAVE_PTHREAD is defined
Date: Sun, 23 Oct 2011 19:44:46 -0700

Thanks for reporting that.  I think the bug is that configure.in is
invoking AC_CHECK_LIB in such a way that LIBS is not affected.
This would be a problem regardless of the FreeBSD issue, but
I expect it's causing the FreeBSD issue as well.  I committed a fix
into the trunk as bzr 106173; could you please give it a try
and let us know how it goes?  Thanks.

Message #11 received at 9852 <at> debbugs.gnu.org (full text, mbox):

From: Nali Toja <nalitoja <at> gmail.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: 9852 <at> debbugs.gnu.org
Subject: Re: pthread_sigmask() check is bogus when HAVE_PTHREAD is defined
Date: Mon, 24 Oct 2011 03:30:31 +0000

Paul Eggert <eggert <at> cs.ucla.edu> writes:

> Thanks for reporting that.  I think the bug is that configure.in is
> invoking AC_CHECK_LIB in such a way that LIBS is not affected.
> This would be a problem regardless of the FreeBSD issue, but
> I expect it's causing the FreeBSD issue as well.  I committed a fix
> into the trunk as bzr 106173; could you please give it a try
> and let us know how it goes?  Thanks.

Yep, 106173 fixes the issue. Both the FreeBSD port's snapshot with the
patch from the commit and emacs trunk detect pthread_sigmask() correctly.

Message #16 received at 9852-done <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Nali Toja <nalitoja <at> gmail.com>
Cc: 9852-done <at> debbugs.gnu.org
Subject: Re: pthread_sigmask() check is bogus when HAVE_PTHREAD is defined
Date: Sun, 23 Oct 2011 20:33:32 -0700

Thanks for checking; I'm marking this as done.

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