On Thu, 2018-03-22 at 00:12 -0300, Rogério Brito wrote: [...] > If nobody is working on getting a new kernel working on armel, I would > like to (at least, unsuccessfully) try to get it to compile. > > At worst, I believe, I can gain some knowledge and compare what I get from > this armel kernel with a Kurobox HD (powerpc-based; see some notes at [0])... > > [0]: > http://cynic.cc/blog/posts/simple-annotations-on-compiling-a-linux-kernel-for-an-embedded-platform/ > > For this task, I have some questions: > > 1 - To get up to speed, is there any recommended way of cross-compiling > the kernels, before I try it on bare-metal? When I compiled my own > kernels, I used to use a cross-compiler that I compiled myself and it > was using a very non-methodological way...
Cross-compiling works well. For the Debian package, use:
dpkg-buildpackage -aarmel -Pcross,pkg.linux.notools
If you want to work with the upstream source, use:
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-
[...]
> 3 - Besides the points listed above, what else can usually be disabled,
> if they don't pertain/make sense in a system like a small armel box?
If I knew that I'd have already done it (or suggested it).
> 4 - What is the preferred tree to be used for Debian's kernel
> development? I am used to compile kernels from Linus's git tree with no
> patches, but I know that Debian carries a sizable amount of patches...
Clone the kernel team's git repository and use whatever upstream
version we are using.
> I may have some free time after Easter to have some trial and errors, but it
> may even be the case that some free time becomes available before that...
>
> > We would like to ideally upload a 4.15.x based version to unstable
> > (currently imported 4.15.4).
>
> I now see that there were some 4.16rc's uploaded to the archive... I guess
> that this is tied with my 4th point above, right?
You can work on either the sid branch (currently 4.15.y) or master
(4.16-rcN, for experimental). But in a few weeks 4.16 will be ready
for unstable and it will probably result in further code growth, so you
might as well work on master.
Ben.
> Hope to have some luck with my 1st armel adventures,
>
>
> Rogério Brito.
>
--
Ben Hutchings
This sentence contradicts itself - no actually it doesn't.
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