[Buildroot] [PATCH] infra/pkg-kconfig: do not rely on package's .config as a timestamp

[Peter Korsgaard]

>>>>> "Yann" == Yann E MORIN <yann.morin.1998 at free.fr> writes:

 > Since linux-4.19, the kernel's build system internally touches its
 > .config file.

 > However, we currently used that file as a timestamp to detect whether
 > our kconfig fixups were to be (re)applied or not, which in turn is used
 > to decide whether we should (re)build the package or not.

 > But with latest kernel versions, this timestamp heuristic is now broken,
 > and we always rebuild the kernel on subsequent builds.

 > We fix that by introducing a spearate timestamp file of our own, which
 > we know the kernel (or the kconfig-based packages, for that matters)
 > does not use.

 > Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
 > Cc: Thomas De Schampheleire <patrickdepinguin at gmail.com>
 > Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
 > Cc: Arnout Vandecappelle <arnout at mind.be>

Committed to 2019.02.x, thanks.

-- 
Bye, Peter Korsgaard