Re: Weird library problem

On 10/16/2014 02:50 AM, Holger(dot)Friedrich-Fa-Trivadis(at)it(dot)nrw(dot)de wrote:
> Hello,
> the other day I’ve run into a weird problem involving the
> libldap_r-2.4.so.2 library. I’ve got a working recipe as to how to get
> things to run, but still it’s a little weird, so I’d appreciate any
> insight into what’s going on here.
> On a CentOS 6.5 box, I installed PostgreSQL 9.0.17 into a custom
> directory using the relocatable OpenSCG RPM package, which comes with
> its own libldap_r-2.4.so.2. There is also another version of
> libldap_r-2.4.so.2 in the /lib64 directory on the box, which rpm says
> comes from a package called openldap. (Technically, the
> libldap_r-2.4.so.2 in /usr64 is a symlink pointing to the regular file
> libldap_r-2.4.so.2.5.6.) We also want PostGIS, so I was working on
> building a custom RPM package that would install PostGIS 2.0.3 into the
> custom directory PostgreSQL is installed in.
> It turns out that the RPM package only builds when the original
> libldap_r-2.4.so.2 is in place that came with the OpenSCG package.
> Conversely, PostGIS only runs when I copy the library version from
> /lib64 over the one in the PostgreSQL library path. With the OpenSCG
> library in place, which PostGIS was compiled against, I get this error
> message:
> postgres=# SELECT postgis_full_version();
> ERROR: could not load library
> "/usr/postgres/system/TESTMIT9017/lib/postgresql/rtpostgis-2.0.so":
> /lib64/libldap_r-2.4.so.2: undefined symbol: ber_sockbuf_io_udp
> CONTEXT: SQL statement "SELECT postgis_gdal_version()"
> PL/pgSQL function "postgis_full_version" line 21 at SQL statement
> Anyone encountered those symptoms and knows what is going on?

Library mismatch. Looks like rtpostgis-2.0.so is looking for something
that /lib64/libldap_r-2.4.so.2 is not providing. So, if I am following
correctly that would be the OpenSCG version. From the looks of it, that
library is not recent enough.

> Best regards
> Holger Friedrich

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com