Re: Build and Source Tree Requirements for Out-of-tree Modules

[Shea Levy]

Hi,

On 01/01/2014 03:04 PM, Austin S Hemmelgarn wrote:
> On 01/01/2014 10:11 AM, Shea Levy wrote:
> > Hi all,
> >
> > I am a package maintainer for the kernel for the NixOS
> > distribution. We support users building out-of-tree modules and
> > other packages that might depend on the kernel source or build
> > trees, but make modules_install copies the entire source and build
> > trees (we build with $(O) set) to $(INSTALL_PATH), and those are
> > some big paths to keep around. Is there any documentation on which
> > of those files should actually be needed by any out-of-tree tools?
> > For example I'm guessing the intermediate object files in the build
> > tree or the .c files in the source tree are not necessary, but it
> > would be nice if there were a definitive list of what could be
> > removed to save space.
> Running 'make modules_prepare' in a clean source tree should set up
> the sources with everything needed for out of tree modules, it largely
> amounts to the .config file, a few scripts, and a couple of specific
> other files.
Thanks so much! It looks like this can replace the build tree, so now 
all I need to figure out is how much of the source tree I can get rid 
of. The Makefile in the modules_prepare directory just basically 
re-calls make with -C /path/to/source/tree, so I need at least the 
Makefile...

~Shea Levy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/