Experimental Physics and
Industrial Control System

Just to be clear, the module “seq” has been installed on my server:

$ ls -lht /usr/lib/epics/lib/linux-x86_64/libseq*

-r--r--r--. 1 root root 105K Sep  3  2020 /usr/lib/epics/lib/linux-x86_64/libseq.a

-r-xr-xr-x. 1 root root  74K Sep  3  2020 /usr/lib/epics/lib/linux-x86_64/libseq.so

-r--r--r--. 1 root root 2.5K Sep  3  2020 /usr/lib/epics/lib/linux-x86_64/libseqSoftIocSupport.a

-r-xr-xr-x. 1 root root 8.3K Sep  3  2020 /usr/lib/epics/lib/linux-x86_64/libseqSoftIocSupport.so

 

The building rules in base-R7.0.4.1 must have changed. I guess the rules ignore “SNCSEQ” when SNCSEQ has the same path as EPICS_BASE. If my guess is right, it explains why I still get the error “No rule to make target 'ipSNCServer.o'” even after I have SNCSEQ defined.

 

Thanks,

Yong

 

Hello everyone,

 

I am trying to build the latest asyn (commit a2da087) against base-R7.0.4.1, but encountered the same error “No rule to make target 'ipSNCServer.o'” as reported on tech-talk:

https://epics.anl.gov/tech-talk/2007/msg01045.php

 

However, I do have SNCSEQ defined in asyn/configure/RELEASE:

SNCSEQ=/usr/lib/epics

EPICS_BASE=/usr/lib/epics

 

As you see, both EPICS_BASE and SNCSEQ point to the same path in my RELEASE. This is the historical tradition at NSLS-2: we install all EPICS stuff (base, support modules) in a flat directory “/usr/lib/epics”.

$ ls /usr/lib/epics/

bin  cfg  configure  db  dbd  include  lib  startup  templates

 

This has been working well for base-3.14.12, meaning I can build the latest asyn (commit a2da087) against base-3.14.12 with SNCSEQ=/usr/lib/epics. Now, this kind of directory structure seems to not work for base-R7.0.4.1. I do see some warnings when building asyn against base-R7.0.4.1:

/usr/lib/epics/configure/RULES_BUILD:575: Warning: Base configure/RULES_BUILD file included more than once. Does configure/RELEASE have multiple pointers to /usr/lib/epics?

 

If I make a change like this: SNCSEQ=/home/yhu/epics/seq-2-2-6 where I have built “seq” in my home directory, I can build the latest asyn (commit a2da087) against base-R7.0.4.1 successfully.

 

So, the problem seems related to “Does configure/RELEASE have multiple pointers to …”. A simple search on Google/Tech-Talk does not give me any hints to fix the problem. Any suggestions are welcomed!

 

Thanks,

Yong