RE: EPICS 7 base on WSL2

[Freddie Akeroyd - STFC UKRI via Tech-talk <tech-talk at aps.anl.gov>]

Hi,

 

if you type

 

    which git

 

in WSL is it picking up Ubuntu git correctly? Do

 

    git config --get core.autocrlf

    git config --get core.eol

 

show anything amiss?

 

Re: caget issue, yes you type the caget in a new linux terminal. Do you still have the softIoc running in another linux terminal and did you get the expected output from the dbl command in the softIoc window?

 

Regards,

 

Freddie

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Leblanc, Gregory via Tech-talk
Sent: 05 May 2021 21:30
To: tech-talk at aps.anl.gov
Subject: RE: EPICS 7 base on WSL2

 

There’s clearly something up with my git checkout. 

/EPICS/epics-base$ file README

README: ASCII text, with CRLF line terminators

 

I ran the checkout from within ubuntu by doing:

$ git clone --recursive https://github.com/epics-base/epics-base.git

 

Since there’s no CentOS package for WSL, for the short term, at least, I ditched WSL and installed CentOS-8-Stream in a VMware virtual machine.  That seems to have gotten me a couple of steps further, but I’m pretty sure I’m missing something pretty straightforward.

 

At https://docs.epics-controls.org/projects/how-tos/en/latest/getting-started/installation.html#test-epics

 

I see a segment that shows:

Open a new terminal (we call it nr. 2) and try the command line tools caget and caput. You will see something like

 

your prompt> caget temperature:water

 

Is that a new linux terminal?  If so, I get the following:

 

$ caget temperature:water

Channel connect timed out: 'temperature:water' not found.

 

However, the > implies that this is an epics prompt, but there is no caget in the list of commands for softIoc.  I’m sure it’s staring me in the face, but I can’t see it.

     Greg

 

From: Freddie Akeroyd - STFC UKRI <freddie.akeroyd at stfc.ac.uk>
Sent: Friday, April 30, 2021 8:30 PM
To: Leblanc, Gregory <leblanc at ohio.edu>; tech-talk at aps.anl.gov
Subject: RE: EPICS 7 base on WSL2

 

Hi Greg,

 

I tried it just now and it all built and ran OK with no changes. My dbd file also looks to be with the correct line endings

 

/mnt/c/devel/wsl-epics-base$ file dbd/softIoc.dbd

dbd/softIoc.dbd: ASCII text

 

So I think you are right that the issue is line endings. If you run file on the top epics base README what does it give? For me that is also:

 

/mnt/c/devel/wsl-epics-base$ file README

README: ASCII text

 

If yours mentions CRLF etc. did you do the checkout using git from WSL or with windows git? Is a git config file getting picked up from somewhere that sets the line endings incorrectly?

 

I think the dbd files get generated from a .pod file using perl. If the above README is the correct line endings, then I would assume the .pod files are too. Another possibility is then that the wrong perl program is being picked up – Windows strawberry perl would add CRLF. If you type    which perl    in WSL does it look right?

 

Regards,

 

Freddie  

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Leblanc, Gregory via Tech-talk
Sent: 30 April 2021 22:21
To: tech-talk at aps.anl.gov
Subject: EPICS 7 base on WSL2

 

Anybody tried running EPICS under WSL?  I was just playing around, trying to decide if heading down the EPICS path makes sense for our lab. 

 

I followed the docs at: https://docs.epics-controls.org/projects/how-tos/en/latest/getting-started/installation.html

I had to edit the EpicsHostArch script to change the line endings from CRLF to LF (or was it vice-versa?).  After that, the build went well.  I tried to run softIoc to do a test, and got the following:

 

$ softIoc

Error: Invalid character 'c'

at or before "c" in file "/home/leblanc/EPICS/epics-base/bin/linux-x86_64/../../dbd/softIoc.dbd" line 1

Error: Invalid character 'a'

Error: Invalid character 'l'

Error: Invalid character 'c'

Error: Invalid character 'o'

Error: Invalid character 'u'

Error: Invalid character 't'

Error: Invalid character 'D'

Error: Invalid character 'O'

Error: Invalid character 'P'

Error: Invalid character 'T'

Error: syntax error

Error: Failed to load DBD file: /home/leblanc/EPICS/epics-base/bin/linux-x86_64/../../dbd/softIoc.dbd

 

At which point   I decided that was enough for a Friday night.  I wonder if it might also be line endings, since file reports:

 

$ file EPICS/epics-base/dbd/softIoc.dbd

EPICS/epics-base/dbd/softIoc.dbd: ASCII text, with CRLF, LF line terminators

 

Am I out to lunch, or is it worth a try next week?

     Greg

 

--

Gregory Leblanc

Accelerator Engineer

Edwards Accelerator Lab - Ohio University

123 University Terrace

Athens, OH 45701

leblanc at ohio.edu

M: (401) 52-OUAL1 or (401) 526-8251

 

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