[Buildroot] [RFC PATCH v3 1/1] support/kconfig: Bump to kconfig from Linux 4.17-rc2

[Petr Vorel <petr.vorel@gmail.com>]

Hi Thomas,

> Thanks for working on this!

> On Wed, 19 Sep 2018 13:36:15 +0200, Petr Vorel wrote:
> > Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
> > ---
> > Changes v2->v3:
> > * Fix issues with building more that we need (menuconfig require
> > unfortunately "make menuconfig" fails, because
> > it wants ? reported by Thomas in [1]).

> I don't understand this changelog. Could explain a bit more what you
> mean here?

Sure :). v2 build all code no matter whether it was actually needed. E.g. 'make
menuconfig' built gconf (gtk) or qconf (qt). That's a bug you pointed out in
[1].  I fixed it in v3. It was caused by removing ifeq clauses.
Here is the diff v2 vs. v3:

-hostprogs-y := conf nconf mconf kxgettext qconf gconf
+hostprogs-y := conf
+
+ifeq ($(MAKECMDGOALS),nconf)
+	hostprogs-y += nconf
+endif
+
+ifeq ($(MAKECMDGOALS),mconf)
+	hostprogs-y += mconf
+endif
+
+ifeq ($(MAKECMDGOALS),update-po-config)
+	hostprogs-y += kxgettext
+endif
+
+ifeq ($(MAKECMDGOALS),qconf)
+	qconf-target := 1
+endif
+
+ifeq ($(MAKECMDGOALS),gconf)
+	gconf-target := 1
+endif
+
+ifeq ($(qconf-target),1)
+	hostprogs-y += qconf
+endif
+
+ifeq ($(gconf-target),1)
+	hostprogs-y += gconf
+endif

Another change I did is little changes in docs
(support/kconfig/README.buildroot):

-This is a copy of the kconfig code in the kernel (currently 3.13-rc5) tweaked
+This is a copy of the kconfig code in the kernel (currently 4.17-rc2) tweaked
...
 	cd support/kconfig.new
+	# zconf.lex.c and zconf.tab.c needs to be generated by 'make menuconfig'

Kind regards,
Petr