[PATCH] kconfig: add build-only configurator targets

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

Add build-only targets for build_menuconfig, build_nconfig,
build_xconfig, and build_gconfig.
(targets must end in "config" to qualify in top-level Makefile)

This allows these target to be built without execution (e.g., to
look for errors or warnings) and/or to be built and checked by sparse.

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
---
 scripts/kconfig/Makefile |    8 ++++++++
 1 file changed, 8 insertions(+)

--- linux-next-20180814.orig/scripts/kconfig/Makefile
+++ linux-next-20180814/scripts/kconfig/Makefile
@@ -33,6 +33,14 @@ config: $(obj)/conf
 nconfig: $(obj)/nconf
 	$< $(silent) $(Kconfig)
 
+build_menuconfig: $(obj)/mconf
+
+build_nconfig: $(obj)/nconf
+
+build_gconfig: $(obj)/gconf
+
+build_xconfig: $(obj)/qconf
+
 localyesconfig localmodconfig: $(obj)/conf
 	$(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
 	$(Q)if [ -f .config ]; then 					\