Experimental Physics and
Industrial Control System

"Davidsaver, Michael" <[email protected]> · Thu, 16 Dec 2010 18:34:21 -0500

> -----Original Message-----
> From: Andrew Johnson [mailto:[email protected]]
> Sent: Friday, December 10, 2010 5:11 PM
> 
> On Friday 10 December 2010 15:19:12 Davidsaver, Michael wrote:
...
> > It may be a
> > personal preference, but in the src/ directory at least I would
> rather
> > have a few large Makefiles.
> 
> I've just pushed a partial solution to LP which splits the
> libCom/Makefile
> into a series of Makefile and RULES fragments in the various source
> sub-
> directories.  See lp:~anj/epics-base/split-libCom-Makefile for the
> changes
> (which I will not merge without further discussion and agreement).  I
> suspect
> that you're not going to like it though because it uses include
> statements to
> pull those fragments into the libCom/Makefile.

Unless I'm missing something doesn't moving the extra rules before the
include of configure/RULES mean that 'all' will no longer be the default
target?  I tried a build and it seems to work, but I'm not quite sure
why.  I see that RULES_ARCHS and O.$(T_A)/Makefile use 'all' explicitly,
but don't see how the 'all' target from RULES_ARCHS gets invoked?

While I don't really like it.  Beyond this I can't see any technical
problems.

> Personally I think this
> makes
> it much easier to find the build instructions associated with a source
> file
> and vice versa.
> 
> If we used my approach with your structure, we could maybe end up with
> build
> directories (O.<target>) and "master" Makefiles in libCom, ioc, std
and
> template (like you I'm not sure about ca).  Each source sub-directory
> would
> still have a Makefile in it, and some would have RULES files as well.
> The
> disadvantage is that we would lose the ability to type 'make' in any
> source
> directory

Personally I don't see this as a serious disadvantage.

> and have it rebuild just the related libraries and products.

Your change has no effect on the target dependencies.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System