Experimental Physics and
Industrial Control System

Angus Gratton <[email protected]> · Thu, 10 Mar 2011 15:15:46 +1100

On Thu, 2011-01-20 at 13:31 -0800, S. Banerian wrote:
> I have been in the process of testing out epics 3.14.12 on debian linux
> 2.6.32 kernel, gcc 4.4, libc 2.11.2, and have encountered an issue with
> edm versions 1-12-39 and 1-12-40 which I’ve been unable to explain.
> 
>*snip*
> 
> /usr/local/cnts/epics/extensions/lib/linux-x86/libEpics.so: undefined
> symbol: create_epicsPvPtr
> 

Hi S.,

This response might come too late, but we just saw the same error on edm
1-12-41 and saw your tech-talk post, so I thought I would reply for
completeness' sake.

The semi-short answer is that you need to rebuild the edmPvObjects file,
as described here:
http://ics-web.sns.ornl.gov/edm/edmUserManual/index.html#id3486646

In our case we had just edited the library path in the existing
edmPvObjects file, to point to the correct libEpics.so file. It seems
that recently the class name has changed from 'epicsPv' to 'EPICS'. The
errors are the edm runtime lookup function failing to find that class,
even though it can find the library.

(So the absolute short answer is that, if the edmPvObjects file has the
right library path, change 'epicsPv'  to 'EPICS')

Cheers,

Angus

-- 
Angus Gratton
Computer Control Specialist
Department of Nuclear Physics
Australian National University

Ph: +61 2 6125 2096

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System