Experimental Physics and
Industrial Control System

Hi John,

> Is there a way to get MSI to deal with multiple levels of 
> substitution?

I divide my Db directory into sub-directories and build them in the proper order.  For example:

xxxApp/Db/first contains Makefile, first.db, and firstAll.substitions:
	Makefile has:
		DB += firstAll.db
	firstAll.substitutions which looks something like this:
	file first.db 
	{
	pattern { DEV       , CARD , NAME    , ID ,P0,P1,P2,P3,P4,P5,P6,P7,P8,P9,P10,P11,P12,P13,VME}
		  { $(DEVICE) ,   0  , NAME1   ,  1 , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 , 0 , 0 , 0 , 1 }
		  { $(DEVICE) ,   0  , NAME2   ,  2 , 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 , 0 , 0 , 0 , 1 }
		...
		  { $(DEVICE) ,   0  , NAME15  , 12 , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 , 0 , 0 , 1 , 1 }
	}	
	

xxxApp/Db/second contains Makefile, second.substitutions:
	Makefile has:
		DB += second.db
	second.substitutions looks something like this:
	file firstAll.db 
	{
	pattern { DEVICE  }
		  { device1 }
		  { device2 }
		...
		   {device30}
	}

and xxxApp/Db/Makefile looks like:
	TOP = ../..
	include $(TOP)/configure/CONFIG
	# first must be first since second will need for the .db file created by first
	DIRS += first 
	DIRS += second
	include $(TOP)/configure/RULES_DIRS

The RULES.Db files that come with epics 3.14.8.2 will do the MSI properly - I don't think we had to change RULES.Db for this.

If you don't like sub-directories, just create more *Db directories under xxxApp:
	xxxApp/CommonDb1
	xxxApp/CommonDb2
	xxxApp/Db  (which depends on CommonDb1 and CommonDb2 being built first)
	xxxApp/Makefile must enforce proper build order

Note there is a bug in the RULES somewhere that requires the "{" that comes after the "file xxxx.db" to be on the next line if xxxx.db comes from another module listed in your RELEASE file.
	Doesn't work:
	file xxxx.db {
	Works: 
	file xxxx.db
	{

Hope this helps more than confuses...

Stephanie Allison

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Re: multiple levels of substitution in msi John Dobbins

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multiple levels of substitution in msi John Dobbins

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