docs/manual: update pkg-kconfig doc about <pkg>-diff-config

Briefly states what the output of this target is about.

Signed-off-by: Marcel Patzlaff <m.patzlaff@pilz.de>
[Thomas: improve wording]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Marcel Patzlaff 2019-08-05 08:43:01 +02:00 committed by Thomas Petazzoni
parent 7fc154da3d
commit f6d1f9584f

View File

@ -43,6 +43,12 @@ This snippet creates the following make targets:
options that differ from the default values. It is not possible to
use this target when fragment files are set.
* +foo-diff-config+, which outputs the differences between the current
configuration and the one defined in the Buildroot configuration for
this kconfig package. The output is useful to identify the
configuration changes that may have to be propagated to
configuration fragments for example.
and ensures that the source configuration file is copied to the build
directory at the right moment.