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Subject: Re: Epics Core 7 & Submodules
From: "Hartman, Steven M." <[email protected]>
To: Hugo Slepicka <[email protected]>, "[email protected]" <[email protected]>
Date: Thu, 8 Feb 2018 00:56:04 +0000
Good observation. Those modules are all originally from EPICS base v3, with a history going back decades. This approach preserved all of that history. I believe the first repo was in CVS, followed by subversion then bazaar and now git (with submodules). Take a look at git log.  The other modules started out as separate repos. 

--
Steven Hartman


From: Hugo Slepicka <[email protected]>
Date: February 7, 2018 at 6:40:03 PM EST
To: [email protected] <[email protected]>
Subject: Epics Core 7 & Submodules

Hi,
While exploring EPICS Base 7 by checking out the code from https://git.launchpad.net/epics-base I noticed that ca, libcom and database submodules are using the same URL as epics-base but pointing to different branches ("ca/master", "libcom/master" and "database/master") while epics-base uses the "core/master" branch.

Some questions about the structure appeared but I would like to start with this one if possible:

- Why the three submodules (ca, libcom, database) are being handled different than the other submodules?

To support my understanding of it I did this little scheme:
Screen Shot 2018-02-07 at 3.16.50 PM.png

Sorry if this is a repeated question or if the questions are for still being fresh on handling submodules.

Thank you,
Hugo
References:
Epics Core 7 & Submodules Hugo Slepicka
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