topic Re: Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2 in Operating System - HP-UX

Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2

Patricia_18 — Tue, 05 Nov 2002 09:09:48 GMT

I'm trying to run a C++ program on a HP-UX 10.20. The program was compiled in a HP-UX 11.00 with a aCC A.03.13 compiler. The following error appears:
"/usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2"
How can I solve this error in order to be able to run the program on the HP-UX 10.20 machine?

Re: Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2

Donald Kok — Tue, 05 Nov 2002 09:30:33 GMT

compile it on the 10.20 machine.
The .2 files belong to ux 11, and are not found on 10.20 systems.

Re: Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2

Patricia_18 — Tue, 05 Nov 2002 09:39:18 GMT

That means that it not possible to transport a program between different HP-UX platforms?

Re: Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2

Steven Gillard_2 — Tue, 05 Nov 2002 10:06:46 GMT

Not in that direction. Binaries compiled on earlier releases generally work on later releases of the OS without re-compilation (ie moving a 10.20 binary to 11.0 usually works). But binaries compiled on later releases cannot be moved back to earlier releases - this is not supported and as you've found out it just doesn't work.

The STK contains more information:

http://devresource.hp.com/STK/binarycompat.html

Regards,
Steve

Re: Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2

Adam J Markiewicz — Tue, 05 Nov 2002 10:10:08 GMT

>>
That means that it not possible to transport a program between different HP-UX platforms?
<<

Thew only good aswer is: It's not so obvious.
If your program is linked to use functions from dynamically linked libraries, that libraries have to be reachable in the moment you start your program.

Standard and system functions are in such libraries. When you make your program aCC is configured to produce native code by default. So, for HP-UX 11.00 it will use libraries from HP-UX 11.00. If they were not existing previously (or exist in too old version for current program) you'll get into trouble.

I guess that everythink from 10.20 will run on 11.00.
I also think that it should be possible to configure aCC on 11.00 to produce executables like they were compiled on 10.20.

But I've never done it myself.

Adam

Re: Error: /usr/lib/dld.sl: Can't open shared library: /usr/lib/libdld.2

Patricia_18 — Tue, 05 Nov 2002 10:16:20 GMT

Thank you very much to all :)