dbReadDatabase in base-7.0

[Benjamin Franksen <benjamin.franksen@helmholtz-berlin.de>]

Hi everyone

I am trying to get some of our applications to build against base-7.0
(we have only used 3.14 until now). So far most of the changes I needed
to make were pretty straight forward, but I have now hit a road block.

It seems that DB_OPT is no longer supported. We are using DB_OPT in some
of our Makefiles for three reasons: (1) to keep down the size of
generated db files, (2) to make them more readable, and (3) to compare
them more easily. Re-adding DB_OPT support to the build system wasn't
very hard, and this question is /not/ about the build system.

We have long since replaced dbst with a much simpler tool, which
basically just calls dbReadDatabase twice (once for the dbd file and
once for the input db file) and then calls dbWriteRecord.

This tool no longer works with base-7.0. It complains

        *** Did you run x_RegisterRecordDeviceDriver(pdbbase) yet? ***
dbReadDatabase error; file name=../O.Common/OpticRamp.SIOC2CP.db.raw,
return code=-1, errno=0
dbAllocRecord(ORMPCGP:setOpt) with ao rec_size = 0
Can't create record "ORMPCGP:setOpt" of type "ao"
Error at or before ")" in file "../O.Common/OpticRamp.SIOC2CP.db.raw" line 1
Error: syntax error

I do not understand this error message. Is dbReadDatabase no longer the
right function to call?

Cheers
Ben
-- 
"Make it so they have to reboot after every typo." ― Scott Adams

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