[daip] [!16769]: AIPS - AIPS causing issues in new Ubuntu 20.04 OS Upgrade

[Gregory Walsh]

AIPS causing issues in new Ubuntu 20.04 OS Upgrade
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           Ticket ID: 16769
                 URL: https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/16769
                Name: Gregory Walsh
       Email address: gwalsh4758 at gmail.com
             Creator: User
          Department: AIPS Data Reduction
       Staff (Owner): Eric Greisen
                Type: Issue
              Status: Open
            Priority: Default
                 SLA: NRAO E2E
      Template group: Default
             Created: 13 August 2020 08:11 PM
             Updated: 19 August 2020 09:14 PM
           Reply due: 21 August 2020 09:14 PM (2d 0h 0m)
      Resolution due: 15 May 2023 12:00 AM (998d 2h 46m)

You're right, it seems like this is the issue. Here is the testing I 
just did (maybe you have done the same).

When I open a terminal, echo $LD_LIBRARY_PATH returns nothing and evince 
will load pdfs without issue. Let's just say it's using libgcc_s.so.1 
from /lib/x86_64-linux-gnu, for example. If I hard code LD_LIBRARY_PATH 
in my .bashrc using that location, echo $LD_LIBRARY_PATH obviously 
returns that directory and evince will still work. But once I source 
~/aips/LOGIN.SH and ~/aips/31DEC19/LNX64/LIBR/INTELCMP gets appended to 
the front of LD_LIBRARY_PATH, evince no longer works and returns the 
same map segment errors as before: (evince:212901): 
EvinceDocument-WARNING **: 16:06:43.863: libgcc_s.so.1: failed to map 
segment from shared object. If the AIPS extension is appended to the end 
of the path, evince will still work. It seems that so long as the 
directory containing the most up-to-date libgcc_s.so.1 version (there 
are multiple anyway) is read before the 31DEC9 AIPS version is and one 
has set LD_LIBRARY_PATH somewhere (.bashrc, terminal command line, 
etc.), evince will work.

Sorry for not noticing this the first time; I have little experience 
with these things. Thanks for thinking about this!

Greg




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