Experimental Physics and
Industrial Control System

Simon Rose via Tech-talk <tech-talk at aps.anl.gov> · Tue, 6 Feb 2024 13:48:28 +0000

Hi Jörn -

There are two solutions you could try, depending on preference. You could instead define your rule to generate the .template file as

$(COMMON_DIR)/db.template:
	perl script.pl

db.template$(DEP):
	@echo $(COMMON_DIR)/db.db: ../Makefile > $@

This would generate the .template file as needed, within the O.Common directory, which would then be installed in as db/db.template. Note that you do need the second target as well, as EPICS base expects a file that describes the dependencies of generated files.

If, on the other hand, you want to simply create a .db file in the end, you could also do:

DB += db.db

db.template:
	perl script.pl

In this case, the regular EPICS build rules to convert a .template file to a .db file will take place, and you will get a .db file only installed.

In the end, it depends on whether  or not you case about having specifically a .template file or a .db file installed.

Cheers,

Simon

On 2024-02-06, 14:25, "Tech-talk on behalf of Jörn Dreyer via Tech-talk" <tech-talk-bounces at aps.anl.gov <mailto:tech-talk-bounces at aps.anl.gov> on behalf of tech-talk at aps.anl.gov <mailto:tech-talk at aps.anl.gov>> wrote:

Hi,

I'm working on a device which has around 20.000 channels which have mostly very similar names. Therefor I created a perl script that auto generates some template files to be used by the IOC. How can I define a rule in the Db/Makefile that calls this script?

A simple

DB += db.template

db.template:
perl script.pl

does not work. It complains that there is no rule to create ../O.Common/db.template.

Regards,

Jörn

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System