Experimental Physics and
Industrial Control System

"Davidsaver, Michael" <[email protected]> · Fri, 10 Dec 2010 16:19:12 -0500

> -----Original Message-----
> From: Andrew Johnson [mailto:[email protected]]
> ...
> > If there aren't major changes then next week I will create a branch
> with
> > these changes and request a merge.
> >
> > The first stage will look like:
> > > == Full list of renames
> > >
> > > tools      = tools
> > > libCom     = libCom
> > > toolsComm  = libCom/tools
> > > RTEMS      = libCom/RTEMS
> > > as         = ioc/as
> > > bpt        = ioc/bpt
> > > db         = ioc/db
> > > dbStatic   = ioc/dbStatic
> > > dbtools    = ioc/dbtemplate
> > > misc       = ioc/misc
> > > registry   = ioc/registry
> > > rsrv       = ioc/rsrv
> > > dev/softDev= std/dev
> > > dev/testDev= std/test
> > > rec        = std/rec
> > > softIoc    = std/softIoc
> > > ca         = ca/client
> > > cap5       = ca/client/perl
> > > catools    = ca/client/tools
> > > cas        = ca/legacy/pcas
> > > excas      = ca/legacy/pcas/ex
> > > gdd        = ca/legacy/gdd
> > > makeBaseApp= template/base
> > > makeBaseExt= template/ext
> > > util       = util
> 
> One question about the layout: I'm wondering whether in the final
> structure
> individual directories should either be a branch node or a leaf node,
> i.e.
> they should either contain sub-directories and a Makefile, or they
> contain
> source files and a Makefile, but never both.  Your ca/client and
> ca/legacy/pcas directories are currently mixed nodes.

Trying to adhere to this is what lead to present lib*Ioc situation.  I
would rather start with what I want the result of the build to be, how I
want the code to be organized, and then adapt the build system to
produce it.

> Was your intention to follow the libCom model for source directories?

Yes.  For the ioc/ and std/ directories at least.

> My
> worry is that the libCom/Makefile is unwieldy because it has to name
> all of
> the files in the different sub-directories.

As long as the EPICS build system forces the distinction between
branch/leaf node we will have this problem.  

The Makefiles will be large, but there will be fewer of them.  Basically
all of my dislike of the current build system come from the "evil"
include statement, and having to hunt to find anything.  It may be a
personal preference, but in the src/ directory at least I would rather
have a few large Makefiles.

Michael

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System