Re: [PATCH 1/1] mdadm: make udev rules dir configurable

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Tue, 2012-11-20 at 17:34 +0800, Qi.Chen@windriver.com wrote:
> From: Chen Qi <Qi.Chen@windriver.com>
> 
> mdadm hardcodes the udev rules dir to be '/lib/udev/rules.d'.
> However, udev configs its base library directory to be ${base_libdir}
> instead of '/lib'. Thus if the target has powerpc64 architecture,
> the mdraid.rules file will be missing on the target, as the library
> directory is 'lib64'.
> 
> This patch makes the udev rules dir of mdadm configurable, so that
> the mdraid.rules file will not be missing on any target.
> 
> [YOCTO #2804]

This is a bit of a tricky one. I suspect in this case we need to install
all the udev rules to one place and have an udev look in that place,
regardless of which multilib it was compiled for.

We already have this problem with systemd_unitdir. I think we need to do
something like set:

nonarchlib = "/lib"

and then use this value in places where we want it to be invariant (yet
still allow the layout to be configurable).

So your patch starts to help with this but there is more we need to do.

Cheers,

Richard