Experimental Physics and
Industrial Control System

"J. Lewis Muir" <[email protected]> · Thu, 28 Feb 2013 13:41:43 -0600

On 2/27/13 6:43 PM, Mark Rivers wrote:
> I don't know how to make that process better, but copying and reconciling the CONFIG_SITE files between EPICS releases is one of the most tedious and error prone parts of upgrading EPICS base.

Hi, Mark.

I agree that this is a pain.  What I do is keep track of exactly what
changes I make to configure files (all files, actually).  This list of
changes can be as simple as a diff.  For an upgrade, I check each change
and see if it's necessary in the new version.

Another possible approach might be something like OpenBSD's sysmerge
tool [1].  It helps perform the task of updating configuration files
after an upgrade by walking through differences and offering a chance to
merge.  EPICS Base could provide something similar, maybe called
"epicscfgmerge", to work on EPICS configuration files.

Lewis

1. Search for "sysmerge" at <http://www.openbsd.org/cgi-bin/man.cgi>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System