topic Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code) in Operating System - HP-UX

/usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

gopa haldar — Wed, 10 Feb 2010 07:01:35 GMT

My application uses third party library like boost which uses libpthread to create threads.
And this application is working fine with HPUX version 11.23 but following error oocurrs during runtime in HPUX version 11.11.
/usr/lib/dld.sl: Unresolved symbol: pthread_create (code) from /opt/bst/lib/libboost_thread.sl

ABORT instruction (core dumped).

but before call boost API, if I create a dummy thread using pthread_create api then it is working fine for both HPUX version.

Please let me know the solution of this problem.

More info:
bash-2.04# nm libpthread.1 | grep pthread_create
__pthread_create_system| 35316|uext |stub |
__pthread_create_system| 48508|extern|entry |
__pthread_create_system| 48532|extern|code |$CODE$

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

Jupinder Bedi — Wed, 10 Feb 2010 07:59:04 GMT

you need to install the updated patch .

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

Dennis Handly — Wed, 10 Feb 2010 09:07:28 GMT

dld.sl: Unresolved symbol: pthread_create /opt/bst/lib/libboost_thread.sl
>Please let me know the solution of this problem.

Your libboost_thread.sl has been compiled on 11.23. You can't run this shlib on 11.11. You must recompile your third party library.

There is NO such function as pthread_create on 11.11. It gets mapped to _pthread_create_system by header file magic.

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

gopa haldar — Wed, 10 Feb 2010 09:18:35 GMT

I am using HPUX 11.11 patch version PHCO_30544

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

gopa haldar — Wed, 10 Feb 2010 09:49:36 GMT

Even it is not working with latest PATCH PHCO_38307

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

Dennis Handly — Wed, 10 Feb 2010 10:04:00 GMT

>Even it is not working with latest PATCH PHCO_38307, libpthread

Or course not. As I said above, what you are doing isn't supported.
Where did you get libboost_thread.sl?

Jupinder's suggestion only works if you don't have __pthread_create_system stub defined in libc.sl.

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

gopa haldar — Mon, 15 Feb 2010 07:00:15 GMT

I have buit the boost library in hpux 11.23 system

Re: /usr/lib/dld.sl: Unresolved symbol: pthread_create (code)

Dennis Handly — Mon, 15 Feb 2010 07:28:56 GMT

>I have built the boost library on 11.23 system

As I suspected. Then you know your solution. HP-UX is only forward compatible and if you want to run on 11.11, you must built it there.