Re: distributed module configuration

[Giacomo A. Catenazzi]

Sam Ravnborg wrote:
> On Wed, Feb 13, 2008 at 12:54:33AM -0800, David Miller wrote:
> > From: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > Date: Wed, 13 Feb 2008 09:45:41 +0100
> >
> > > So we could do:
> > >
> > > config foo
> > > 	tristate "do you want foo?"
> > > 	depends on USB && BAR
> > > 	module
> > > 	  obj-$(CONFIG_FOO) += foo.o
> > > 	  foo-y := file1.o file2.o
> > > 	help
> > > 	  foo will allow you to explode your PC
> >  ...
> > > Does this fit what you had in mind?
> > Yes it does.
> >
> > Now I'll ask if you think embedding this information in one of the C
> > files for a module would be even nicer?
> I have no good idea for the syntax and I and not sure what is gained
> by reducing a driver with one file.
> Agreed - simple drivers would then be a single file - and thats a good argument.

I like the Sam proposal, but maybe we can simplify the rules on
"module" segment: some informations are often redundant, dependencies
are sometime calculated by config part and sometime by Makefile
(and sometime in the Makefile there are some wrong hacks).
I would really like a good section like:

module
   foo : file1.o file2.o

and let the complex rules in the normal Makefile
(which is also good because the complex rules are often not
specific to a single driver).

But I don't like merging all info in a single file:
- not so clean in case of multiple source-file driver
- it would be more complex the "copy and paste"
  from other drivers: most developers are not
  comfortable with Kconfig and Makefile, so easy to grep
  others Kconfig/Makefile could help developers not do
  do strange/wrong hacks.

ciao
	cate

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