setlocalversion: absorb $(KERNELVERSION)

Print $(KERNELVERSION) in setlocalversion so that the callers get
simpler.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

Makefile

@@ -1258,8 +1258,7 @@ vmlinux: vmlinux.o $(KBUILD_LDS) modpost
 # make sure no implicit rule kicks in
 $(sort $(KBUILD_LDS) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS)): . ;
 
-filechk_kernel.release = \
-	echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
+filechk_kernel.release = $(srctree)/scripts/setlocalversion $(srctree)
 
 # Store (new) KERNELRELEASE string in include/config/kernel.release
 include/config/kernel.release: FORCE
@@ -2124,7 +2123,7 @@ checkstack:
 	$(PERL) $(srctree)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
 
 kernelrelease:
-	@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
+	@$(srctree)/scripts/setlocalversion $(srctree)
 
 kernelversion:
 	@echo $(KERNELVERSION)

scripts/setlocalversion

@@ -102,6 +102,11 @@ if ! test -e include/config/auto.conf; then
 	exit 1
 fi
 
+if [ -z "${KERNELVERSION}" ]; then
+	echo "KERNELVERSION is not set" >&2
+	exit 1
+fi
+
 # localversion* files in the build and source directory
 res="$(collect_files localversion*)"
 if test ! "$srctree" -ef .; then
@@ -127,4 +132,4 @@ elif [ "${LOCALVERSION+set}" != "set" ]; then
 	res="$res$(scm_version --short)"
 fi
 
-echo "$res"
+echo "${KERNELVERSION}${res}"