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<== Date ==> <== Thread ==>
Subject: Re: EPICS R3.15 and menuScan.dbd
From: "Johnson, Andrew N. via Tech-talk" <[email protected]>
To: "[email protected]" <[email protected]>
Date: Mon, 6 Jan 2020 21:25:46 +0000
Hi Mike,

I just proved that I can add a new menuScan.dbd file to an exampleApp/src directory and it overrides the one from Base with no errors or warnings from either the build or the IOC startup.

On 1/6/20 2:55 PM, Michael Westfall via Tech-talk wrote:
In the past (using EPICS R3.14.12.x) when we wanted to use custom scan rates, we included a customized version of menuScan.dbd in the source code directory of the IOC project and added 'project_DBD += menuScan.dbd' to the Makefile.
Ah, don't do that last bit, see below. You probably didn't actually do that with 3.14 either...

However, under EPICSS R3.15 the compilation now fails with multiple errors that say dbdExpand.pl: A different menu named 'menuScan' already exists

It seems we get one of these error messages for each support module that is included in the project.

Is there a new way of defining custom scan rates on a per project basis in EPICS R3.15?
No, just put the menuScan.dbd file in the iocApp/src directory where you compile the IOC, but do not add it to the Makefile at all. When the IOC's DBD file gets expanded it will pull in base.dbd, which includes menuScan.dbd, and the search order for the file expansion will find your new file before it sees the one in Base. You could also install a menuScan.dbd file into a support module's dbd directory if you want to override the Base version for all IOCs that use that support module (as long as the RELEASE files list the support module before their EPICS_BASE entry).

HTH,

- Andrew
-- 
Complexity comes for free, Simplicity you have to work for.
Replies:
Re: EPICS R3.15 and menuScan.dbd Johnson, Andrew N. via Tech-talk
References:
EPICS R3.15 and menuScan.dbd Michael Westfall via Tech-talk
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