Boszormenyi Zoltan írta: > Korry Douglas írta: > >>> I have the $SUBJECT problem loading my own >>> module in PostgreSQL. The server is HP-UX/ia64, >>> PostgeSQL 8.4.2 was compiled with HP CC. >>> pl/PgSQL can be loaded fine. >>> >>> ...:/usr/local/pgsql/pgsql-cc-8.4/lib# ldd odbclink.so >>> libodbc.so.1 => /usr/local/pgsql/runtime/lib/libodbc.so.1 >>> libpthread.so.1 => /usr/lib/hpux64/libpthread.so.1 >>> libc.so.1 => /usr/lib/hpux64/libc.so.1 >>> libdl.so.1 => /usr/lib/hpux64/libdl.so.1 >>> >>> "/usr/local/pgsql/runtime" is a link to "/usr/local/pgsql/pgsql-cc-8.4" >>> >>> ...:/usr/local/pgsql/pgsql-cc-8.4/lib# file plpgsql.so odbclink.so >>> plpgsql.so: ELF-64 shared object file - IA64 >>> odbclink.so: ELF-64 shared object file - IA64 >>> >>> The module compilation was done using "USE_PGXS=1 gmake". >>> >>> How can I solve this issue? >>> >> IIRC, HP/UX doesn't like to dynamic-load shared libraries that use >> thread-local storage. Your shared library (odbclink.so) is linked >> against libpthread.so.1 so you may be running into that problem. I >> would recommend running the HP/UX equivalent of strace to capture more >> information about the call to dlopen() (or perhaps shl_load(), >> depending on which version of HP/UX you are using). >> > > Yes, it seems you are right, I have read dlopen(3) in full on HP-UX, > this small detail is documented there. It seems I need to preload > the libraries: odbclink.so, libodbc.so.1 and all the needed libs from > the target ODBC driver... Thanks for the info. > Actually, I experimented with a "threaded" PostgreSQL server, I added LDFLAGS="-lpthreads" to the PG configure options and suddenly my module that's linked to libraries also linked with libpthread.so started working. The dlopen(3) man page doesn't say this as a working constellation. Best regards, Zoltán Böszörményi -- Bible has answers for everything. Proof: "But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil." (Matthew 5:37) - basics of digital technology. "May your kingdom come" - superficial description of plate tectonics ---------------------------------- Zoltán Böszörményi Cybertec Schönig & Schönig GmbH http://www.postgresql.at/ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
