kernel config files outside of sys/${ARCH}/conf ?

Gary Jennejohn gljennjohn at
Thu Jan 12 09:44:59 UTC 2012

On Thu, 12 Jan 2012 09:11:39 +0100
Luigi Rizzo <rizzo at> wrote:

> usr/sbin/config assumes that the kernel config file
> lives in ${src_base}/sys/${arch}/conf , which means that
> if you need to build a custom kernel one needs RW
> access to that directory.
> Any idea on how we can enable config to work in a
> generic directory ?
> I scanned the source code usr.sbin/config and found that
> it uses hardwired paths -- specifically, it looks for
> the kernel source tree in "../.." and has multiple
> hardwired paths such as "../../conf/".
> There is also a somewhat undocumented access to a
> file called DEFAULTS that extends the configuration you pass.
> Any objections to the addition of a "-s" option to config(8)
> to specify the location of the source tree ?

Seems like a good idea to me as long as the old behavior is kept.

Gary Jennejohn (gj@)

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