Re: Compile problems with R3.15.6

[Michael Westfall via Tech-talk <tech-talk@aps.anl.gov>]

Thanks for your help, Andrew!

With what you told me, I was eventually able to figure out I needed to add the following rule to our custom set of rules:

# This is necessary in R3.15.x as a consequence of TDCT producing .db files directly
$(COMMON_DIR)/%.db$(RAW)$(DEP): $(COMMON_DIR)/%.db$(RAW)
        @$(RM) $@
        $(MSI3_15) -D $(DBFLAGS) -o $(COMMONDEP_TARGET) $< > $@

Although, I now get complaints about circular dependencies being dropped that I don't yet understand:

make[3]: Circular ../O.Common/bctest.db <- ../O.Common/bctest.db dependency dropped.

On Tue, Sep 24, 2019 at 12:26 PM Johnson, Andrew N. <anj@anl.gov> wrote:

Hi Michael,

> On Sep 24, 2019, at 9:40 AM, Michael Westfall via Tech-talk <tech-talk@aps.anl.gov> wrote:
>
> I have installed EPICS R3.15.6 here and now when I compile a support module, it fails with this:
> --------------
> ...
> Installing created db file ../../../db/bctest.db
> /gem_sw/epics/R3.15.6/base/configure/RULES.Db:521: Building ../../../db/bctest.db (from ../O.Common/bctest.db) (../O.Common/bctest.db newer)
> + perl -CSD /gem_sw/epics/R3.15.6/base/bin/linux-x86_64/installEpics.pl -d -m 444 ../O.Common/bctest.db ../../../db
> mkdir ../../../db
> make[3]: *** No rule to make target `bctest.db.d', needed by `build'.  Stop.
> make[3]: Leaving directory `/home/mwestfall/bancomm/bancommApp/Db/O.linux-x86_64’
> ...
> --------
> I imagine this might have something to do with our custom rules that we add in here at Gemini, but I'm not seeing how.
> Any pointers as to where I should be looking to figure out why the bctest.db.d file is not being created?

The build rules changed between 3.14 and 3.15 specifically for $(DEP) = .d files; previously we would create a .d file in the same rule as the target itself and the build didn’t worry if there was no .d file. Since 3.15 we have a separate set of rules for creating .d files – look for the rules for targets %.db$(RAW)$(DEP) in Base/configure/RULES.Db and make sure you have equivalents in your ruleset.

Note that 3.15 comes with a newer version of the msi program which was required to generate .d files. In the build this is referred to with $(MSI3_15) since the older msi $(MSI) from extensions is not compatible. The associated changes may be what you’re missing.

IIRC there were quite a lot of changes to the build system between 3.14 and 3.15, I hope you have looked at those while updating your ruleset.

HTH,

- Andrew

--

Mike Westfall

Control Systems Software Engineer