Date: Fri, 20 Dec 2002 12:38:25 +0100 From: Emiel Kollof <coolvibe@hackerheaven.org> To: freebsd-stable@FreeBSD.ORG Subject: Re: More information (was Re: pthread woes) Message-ID: <20021220113825.GA80454@hackerheaven.org> In-Reply-To: <200212200333.04276.coolvibe@hackerheaven.org> References: <20021220013445.GA75547@hackerheaven.org> <20021220020545.GC75547@hackerheaven.org> <200212200333.04276.coolvibe@hackerheaven.org>
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* Emiel Kollof (coolvibe@hackerheaven.org) wrote:
> On Friday 20 December 2002 03:05, Emiel Kollof wrote:
>
> > % gcc -o gtktest gtktest.c `gtk12-config --libs` `gtk12-config --cflags`
> > /usr/X11R6/lib/libX11.so: undefined reference to `pthread_cond_signal'
> > /usr/X11R6/lib/libXThrStub.so.6: undefined reference to `_Xthr_zero_stub_'
> > /usr/X11R6/lib/libX11.so: undefined reference to `pthread_cond_broadcast'
> > /usr/X11R6/lib/libXThrStub.so.6: undefined reference to `_Xthr_self_stub_'
>
> It seems that XThrStub is causing problems. Even after a recompile of
> XFree86-4-libraries the problems still occur. What do I do now? I'm stuck.
I filed a pr with number 46387. Even forcibly compiling stuff with
-pthread doesn't solve my problems. It seems that there is something
wicked is going on in XThrStub. When looking at the source, I find
strange #pragma preprocessor commands of which I'm not sure what they
are supposed to do. They involve _Xthr_zero_stub_ and Xthr_self_stub_
and somehow they don't seem to be present in the library symbols.
I googled around for a bit, and it seems that this has happened before
and was a problem in XFree86-4. It's not really clear what the problem
was, but it seems to have resurfaced.
Is nobody seeing what I'm seeing, or am I alone here?
Please, anyone try this snippet of code: (yes, it's the same as I
submitted in the PR)
--- test.c ---
char XOpenDisplay{};
int main() {
XOpenDisplay();
return 0;
}
--- end test.c ---
Compile as follows:
gcc -o test test.c -L /usr/X11R6/lib -pthread -lX11
If you see this:
azazel# gcc -o test test.c -L /usr/X11R6/lib -pthread -lX11
/usr/X11R6/lib/libXThrStub.so.6: undefined reference to `_Xthr_zero_stub_'
/usr/X11R6/lib/libXThrStub.so.6: undefined reference to `_Xthr_self_stub_'
your system has the same problems as I do. Also, somehow I doubt that
*every* X11 program needs -pthread or -lc_r.
Cheers,
Emiel
--
Miss, n.:
A title with which we brand unmarried women to indicate that
they are in the market.
-- Ambrose Bierce, "The Devil's Dictionary"
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