Re: [HEADS UP]: OpenLDAP+nss_ldap+nss_modules separated patch and more (SoC)

Quoting Kostik Belousov <kostikbel_at_gmail.com> (Wed, 23 Aug 2006 18:46:52 +0300):

> On Wed, Aug 23, 2006 at 05:23:16PM +0200, Alexander Leidinger wrote:
> > Quoting Kostik Belousov <kostikbel_at_gmail.com> (from Wed, 23 Aug 2006  
> > 13:36:04 +0300):
> > 
> > >On Wed, Aug 23, 2006 at 12:11:57PM +0200, Alexander Leidinger wrote:
> > 
> > >>An idea which wasn't suggested yet is to install a renamed version (I
> > >>would suggest libbaseldap instead of libbsdldap or libldap_i, but I
> > >>don't really care about the name) and a link from the original name
> > >>(only the .so and .a, but not the .so.X) to the new name. This link
> > >>can be protected with a WITHOUT_LIBLDAP_LINK switch (or the other way
> > >>around... depending on what we want to achieve). This way it is
> > >>possible to link with the renamed lib in the base system, to use the
> > >>base system version of the lib in ports, and to use the lib from ports
> > >>if desired (a recompile of ports may be needed in the last case, yes).
> > >
> > >This will not work. bsdxml is used inside the system binaries. No binary
> > >links again expat and bsdxml simultaneously. Would such binary exists,
> > >it could experience problems.
> > >
> > >On the other hand, application using openldap from the ports has high 
> > >chance
> > >loading nss_ldap (e.g., due to nsswitch.conf). If nss_ldap linked against
> > >renamed library, this would cause the crash.
> > 
> > And this can't be solved with symbol versioning?
> 
> Probably not. Default openldap build produces unversioned libraries.
> Application linked against such library would happily resolve symbols
> from the versioned lib.

Why? In which case does this make sense? Is this an implementation
detail or the spec?

Bye,
Alexander.

-- 
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