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RE: C++, dlopen() and undefined __pure_virtual
- From: "Banibrata Dutta" <dutta at india dot hp dot com>
- To: "'Daniel Jacobowitz'" <drow at false dot org>
- Cc: "'H. J. Lu'" <hjl at lucon dot org>, <binutils at sources dot redhat dot com>
- Date: Fri, 23 Apr 2004 21:45:56 +0530
- Subject: RE: C++, dlopen() and undefined __pure_virtual
Thank you Daniel and HJ, that solved my problem.
unwittingly newbie to this dlopen stuff,
regards,
bd.
> -----Original Message-----
> From: binutils-owner@sources.redhat.com
> [mailto:binutils-owner@sources.redhat.com] On Behalf Of
> 'Daniel Jacobowitz'
> Sent: Friday, April 23, 2004 9:41 PM
> To: Banibrata Dutta
> Cc: 'H. J. Lu'; binutils@sources.redhat.com
> Subject: Re: C++, dlopen() and undefined __pure_virtual
>
>
> On Fri, Apr 23, 2004 at 09:38:36PM +0530, Banibrata Dutta wrote:
> > Okay. My apolgies to you all including HJ.
> > I did try this immediately after getting HJ's mail,
> > but what i get is the following:
> >
> > g++ -shared -soname libxyz.so -o libxyz.so -lc X.o -lc Y.o
> -lc Z.o -lc
> > g++ A.o
> > -lc B.o -lc C.o -lpthread -lm -ldl
> > g++: libxyz.so: No such file or directory
> > g++: unrecognized option `-soname'
> > make: *** [libxyz.so] Error 1
>
> -Wl,-soname,libxyz.so. You can drop the explicit -lc references also.
>
> >
> > regards,
> > bdutta
> >
> > > -----Original Message-----
> > > From: binutils-owner@sources.redhat.com
> > > [mailto:binutils-owner@sources.redhat.com] On Behalf Of
> > > Daniel Jacobowitz
> > > Sent: Friday, April 23, 2004 9:32 PM
> > > To: Banibrata Dutta
> > > Cc: 'H. J. Lu'; binutils@sources.redhat.com
> > > Subject: Re: C++, dlopen() and undefined __pure_virtual
> > >
> > >
> > > On Fri, Apr 23, 2004 at 09:30:58PM +0530, Banibrata Dutta wrote:
> > > > Hi H.J.:
> > > >
> > > > I am certainly running Linux (actually RH AS-2.1).
> > > > I think the "ld" would work fine because what i am doing is just
> > > > liking the objects in to create the shared library. Infact
> > > I remember
> > > > having tested the process of ".so" creation using ld
> > > previously. The
> > > > problem, I feel is elsewhere...
> > > >
> > > > Thanks for the quick response.
> > >
> > > No, HJ is right. You can not use ld to link shared libraries
> > > and expect things to work correctly. You're missing options
> > > and extra code that g++ would add to the shared library -
> > > including __pure_virtual.
> > >
> > > --
> > > Daniel Jacobowitz
> > > MontaVista Software Debian
> GNU/Linux Developer
> > >
> >
> >
>
> --
> Daniel Jacobowitz
> MontaVista Software Debian GNU/Linux Developer
>