[Buildroot] [PATCH v3 2/6] Add documentation for merged defconfigs

Patrick Williams patrick at stwcx.xyz
Tue Jul 5 19:32:12 UTC 2016

On Fri, Jul 01, 2016 at 03:18:58PM +0200, Romain Naour wrote:
> Hi Sam,
> This series has been discussed with other developers and we concluded that this
> feature is not the responsibility of Buildroot to generate a defconfig from
> partial configuration files.
> Instead we recommend to use merge_config.sh from outside of Buildroot to
> generate the merged defconfig before calling make. Maybe we should add some
> documentation in the manual to explain how to use it.
> Best regards,
> Romain

Earlier we had two independent patch sets that we were asked to merge.

   1) Merged defconfigs (now this patch set).
   2) Subdirs for defconfigs.

If #1 has been rejected as undesireable, should we now prepare an
indepenent patch set for #2 or is that also not wanted now?

There is currently no way for us to manage this behavior in a
BR2_EXTERNAL layer alone because there is no Makefile from the
BR2_EXTERNAL path sourced in the defconfig case.  Is there any issue
with a patch that will source a file like $(BR2_EXTERNAL)/external-defconfig.mk?

I realize we could have a new script, but we already have users that are
use to 'make <system>_defconfig && make' so we would like to be able to
preserve that behavior even though we are moving to merged defconfig

Patrick Williams
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