Date: Fri, 13 Jul 2007 14:23:21 +0800 From: "Rong-en Fan" <grafan@gmail.com> To: "Yuri Pankov" <yuri@darklight.org.ru> Cc: ports@freebsd.org, kan@freebsd.org, miwi@freebsd.org Subject: Re: linking against pthread for a shared library Message-ID: <6eb82e0707122323h1c1fda47y5c4a280d8b5ceb5b@mail.gmail.com> In-Reply-To: <20070712204858.GA1200@darklight.org.ru> References: <6eb82e0707120934pade7a6cw70dc324a47bc09be@mail.gmail.com> <20070712204858.GA1200@darklight.org.ru>
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On 7/13/07, Yuri Pankov <yuri@darklight.org.ru> wrote: > On Fri, Jul 13, 2007 at 12:34:12AM +0800, Rong-en Fan wrote: > > miwi@ and I are working on solving > > an issue with devel/upnp and misc/ushare > > problem. Essentially, the problem is that > > devel/upnp builds a shared library called > > libthreadutil.so which uses threading library. > > misc/ushare is a consumer of that library. > > > > On 7.x system, if you ldd on libthreadutil.so > > (this is i386) > > > > ./work/libupnp-1.6.0/threadutil/.libs/libthreadutil.so: > > liblwres.so.30 => /usr/lib/liblwres.so.30 (0x2817d000) > > libc.so.7 => /lib/libc.so.7 (0x2807e000) > > libthr.so.3 => /lib/libthr.so.3 (0x2818d000) > > > > But on 6.x and 5.x, you only get (this is amd64) > > > > ./work/libupnp-1.6.0/threadutil/.libs/libthreadutil.so: > > liblwres.so.10 => /usr/lib/liblwres.so.10 (0x800941000) > > > > So, one needs to pass -pthread when using > > libthreadutil.so. In my understanding, the behavior > > on 7.x is more correct (or reasonable). > > > > Any ideas how to solve this problem? > > > > Regards, > > Rong-En Fan > > Sorry if i'm mistaken, but this might be related: > http://lists.freebsd.org/pipermail/freebsd-current/2007-June/073600.html Hi Yuri, Ya, it is exact the problem. So, I think one must either 1) pass -pthread for every programs that link against libthreadutil.so 2) pass -lpthread when build the libthreadutil.so. Or, can this problem be "fixed" in 5.x and 6.x world? Since we have real threading support now. Regards, Rong-En Fan > > > Yuri > >
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