fix: do not include RULES_SNCSEQ if not supported within configure

[jerzyjamroz]

This avoids the error on epics-base 7.0:

• sequencer/configure//RULES_SNCSEQ: No such file or directory

[ralphlange]

Hm...

Can you show how that error appears? I don't remember seeing it.

[jerzyjamroz]

@ralphlange , it happens straight away for other modules e.g. try to compile sscan with SNCSEQ := /epics-vanilla/base1/siteMods/sequencer then it cannot find the file.

[ralphlange]

Still puzzled. I have never seen this. Why doesn't it appear when building Base and modules on the Training VM?
E.g., in https://github.com/epics-training/training-vm/actions/runs/16068917725/job/45348905553

[jerzyjamroz]

I just glanced and it seems your build does not use sequencer/configure//RULES_SNCSEQ, which is correct, because it is in the cfg directory.

[ralphlange]

But aren't you saying you are seeing the problem with Base 7.0, even though under 7.0 it gets installed in and automatically included from cfg ??

I would really like to be able to reproduce this to understand what is happening and why.
Can you say for a minimal setup that shows the behavior - which modules in which versions do I need to clone and build in which order?

[jerzyjamroz]

try to compile sscan with SNCSEQ := /epics-vanilla/base1/siteMods/sequencer then it cannot find the file.

@ralphlange , What I remember - this is the way to reproduce that. Obviously SNCSEQ should be assigned to the sequencer with the base 7.0.

[ralphlange]

Sorry, I cannot reproduce this.
Now doing a clean install in a fresh container instance. Stay tuned.

[ralphlange]

Not reproducible.

Here's my recipe on a virgin official Ubuntu-24.04 container:

# apt update; apt install build-essential curl openssl libreadline-dev libncurses-dev perl libperl-dev re2c

# mkdir SEQTEST; cd SEQTEST

# curl -L https://github.com/epics-base/epics-base/releases/download/R7.0.10/base-7.0.10.tar.gz | tar xzf -
# curl -L https://github.com/epics-modules/sequencer/archive/refs/tags/R2-2-9.tar.gz | tar xzf -
# curl -L https://github.com/epics-modules/sscan/archive/refs/tags/R2-12.tar.gz | tar xzf -

# cat > RELEASE.local
SNCSEQ = /SEQTEST/sequencer-R2-2-9
EPICS_BASE = /SEQTEST/base-7.0.10

# make -s -j12 -C base-7.0.10
# make -s -j12 -C sequencer-R2-2-9
# make -s -j12 -C sscan-R2-12

# No problems whatsoever...

[simon-ess]

@jerzyjamroz Are you building against an e3 environment installation of the sequencer? Your siteMods path suggests so.

Note that it's definitely not clearly supported to mix e3 and regular EPICS environments.