Re: [LTP] About POSIX "sched_yield/1-1.c" buld failure

["Mitani" <mitani@ryobi.co.jp>]

> -----Original Message-----
> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> Sent: Tuesday, November 09, 2010 6:28 AM
> To: Mitani
> Cc: ltp-list@lists.sourceforge.net
> Subject: Re: [LTP] About POSIX "sched_yield/1-1.c" buld failure
> 
> On Fri, Nov 5, 2010 at 5:56 AM, Mitani <mitani@ryobi.co.jp> wrote:
> >> -----Original Message-----
> >> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> >> Sent: Tuesday, November 02, 2010 3:43 PM
> >> To: Mitani
> >> Cc: ltp-list@lists.sourceforge.net
> >> Subject: Re: [LTP] About POSIX "sched_yield/1-1.c" buld failure
> >>
> >> On Wed, Oct 27, 2010 at 7:44 PM, Mitani <mitani@ryobi.co.jp> wrote:
> >> >> -----Original Message-----
> >> >> From: Garrett Cooper [mailto:yanegomi@gmail.com]
> >> >> Sent: Tuesday, October 26, 2010 3:57 PM
> >> >> To: Mitani
> >> >> Cc: ltp-list@lists.sourceforge.net
> >> >> Subject: Re: [LTP] About POSIX "sched_yield/1-1.c" buld failure
> >> >>
> >> >> On Mon, Oct 25, 2010 at 6:45 PM, Mitani <mitani@ryobi.co.jp>
> wrote:
> >> >> > Hi,
> >> >> >
> >> >> > I reported that build failure of POSIX test set
> >> >> "conformance/interfaces/
> >> >> > sched_yield/1-1" was still left in RHEL4.8 system:
> >> >> >
> >> >> >
> >> >>
> >>
> http://www.mail-archive.com/ltp-list@lists.sourceforge.net/msg1071
> >> >> 3.html
> >> >> >
> >> >> > In addition, build of the following tests failed by the reason
> >> of
> >> >> > "undefined reference":
> >> >>
> >> >>     Some versions of gcc didn't function properly with
> -lpthread;
> >> try
> >> >> -pthread instead at the top-level LDLIBS file and see whether
> or
> >> not
> >> >> it works for you.
> >> >> HTH,
> >> >> -Garrett
> >> >
> >> > Hi,
> >> >
> >> > I tried to use "-pthread" instead of "-lpthread".
> >> > But "sched_yield/1-1" failed in my all archtectures (RHEL4.8-x86,
> >> x86_64,
> >> > ia64).
> >> > Other 27 tests, too.
> >>
> >> What does `man pthread_barrierattr_getpshared' say?
> 
> ...
> 
> > "man pthread_barrierattr_getpshared" in my system "RHEL4.8-x86_64".
> >
> > ------------
> > [root@RHEL48-LTP-EM64T make]# man pthread_barrierattr_getpshared
> > PTHREAD_BARRIERATTR_GETPSHARED(P)
> > PTHREAD_BARRIERATTR_GETPSHARED(P)
> >
> > NAME
> >       pthread_barrierattr_getpshared,
> pthread_barrierattr_setpshared - get
> > and set the
> >       process-shared attribute of the barrier  attributes  object
> > (ADVANCED  REALTIME
> >       THREADS)
> 
> RHEL sucks for compiling stuff (I remember because it used to be a
> reference platform when I was doing the Makefile work). Try swapping
> around -lrt and -lpthread in the LDLIBS file and see whether or not
> things work. If not, then I'd talk to Redhat and figure out what it
> doesn't work.
> -Garrett

I tried to build "sched_yield", and found that they succeeded to build 
in my system (all of RHEL4.8 - x86, x86_64, ia64).
I didn't notice that "-lpthread" added to "Makefile" of "sched_yield" 
from 2010/10/29 git.

It was October 27 that I tried "-pthread" last. After that, I merely 
revised "LDLIBS" automatically and did make with it.
Sorry!

Thank you--

-Tomonori Mitani



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