debian/rules.d/tools/kconfig/Makefile: Use bison and flex to build kconfig

debian/changelog

@@ -21,6 +21,7 @@ linux (4.16~rc5-1~exp1) UNRELEASED; urgency=medium
   [ Ben Hutchings ]
   * debian/control: Update profile qualification for build-deps on bison
     and flex, which are now used to build kconfig
+  * debian/rules.d/tools/kconfig/Makefile: Use bison and flex to build kconfig
 
  -- Uwe Kleine-König <ukleinek@debian.org>  Fri, 23 Feb 2018 13:08:33 +0100
 

debian/rules.d/scripts/kconfig/Makefile

@@ -6,8 +6,8 @@ conf: conf.o zconf.tab.o
 
 zconf.tab.c: kconf_id.c zconf.lex.c
 
-%.c: %.c_shipped
-	ln -sf $< $@
+%.lex.c: %.l
+	flex -o$@ -L $<
 
-%.h: %.h_shipped
-	ln -sf $< $@
+%.tab.c: %.y
+	bison -o$@ -t -l $<