[PATCH v2 1/3] kconfig: qconf: use if_changed for qconf.moc rule

[Masahiro Yamada]

Regenerate qconf.moc when the moc command is changed.

This also allows 'make mrproper' to clean it up. Previously, it was
not cleaned up because 'clean-files += qconf.moc' was missing.
Now 'make mrproper' correctly cleans it up because files listed in
'targets' are cleaned.

Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---

Changes in v2:
  - Use 'targets' instead of 'clean-files'

 scripts/kconfig/Makefile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 426881ea954f..a5e770e75653 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -192,8 +192,10 @@ $(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
 quiet_cmd_moc = MOC     $@
       cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
 
-$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
-	$(call cmd,moc)
+$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg FORCE
+	$(call if_changed,moc)
+
+targets += qconf.moc
 
 # gconf: Used for the gconfig target based on GTK+
 hostprogs	+= gconf
-- 
2.25.1