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Weird library problem

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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?
 
Best regards
Holger Friedrich
 
 

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