[Buildroot] [PATCH 2/7] lttng-modules: new package

[Arnout Vandecappelle <arnout@mind.be>]

On Thursday 22 December 2011 14:16:05 Thomas Petazzoni wrote:
> > In fact, since building kernel modules from buildroot is not uncommon
> > anymore (there are some packages in the tree that do it, plus
> > user-specific packages, wouldn't it be a good idea to provide a small
> > infrastructure for building kernel modules? This would prevent such
> > mistakes. Instead of gentargets, we could have something like
> > kernelmodule.
> > What do you think about that?  
> 
> I don't know. I am not exactly sure because there is no real standard
> way for packaging external kernel modules. If you look at linux-fusion,
> RTAI or lttng-modules, you'll see that the build mechanism is very
> different. I'm not sure there is a real pattern here that we can
> factorize nicely in an infrastructure. Which pattern do you see?

 RTAI is different because it is much more than a kernel module.  But I
do see a pattern for linux-fusion, lttng-modules and others I've been
using locally.  They generally have a Makefile that tries to be smart
about the kernel sources, and eventually calls a sub-make as

 $(MAKE) -C $(KERNELDIR) M=$(PWD) <extracflags> <target>

 I think we can do the latter directly from buildroot.

 In some cases there is a user-space component in the same package, but
that normally can be built separately as well.


 Regards,
 Arnout

-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
Essensium/Mind                                     http://www.mind.be
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