diff --git a/include/scan.mk b/include/scan.mk
index 00cfe31fba..5af035972f 100644
--- a/include/scan.mk
+++ b/include/scan.mk
@@ -26,12 +26,8 @@ define feedname
 $(if $(patsubst feeds/%,,$(1)),,$(word 2,$(subst /, ,$(1))))
 endef
 
-ifdef SDK
-  IGNORE_PACKAGES = linux
-endif
-
 define PackageDir
-  $(if $(filter $(addprefix %_,$(IGNORE_PACKAGES)),$(1)),,$(TMP_DIR)/.$(SCAN_TARGET): $(TMP_DIR)/info/.$(SCAN_TARGET)-$(1))
+  $(TMP_DIR)/.$(SCAN_TARGET): $(TMP_DIR)/info/.$(SCAN_TARGET)-$(1)
   $(TMP_DIR)/info/.$(SCAN_TARGET)-$(1): $(SCAN_DIR)/$(2)/Makefile $(SCAN_STAMP) $(foreach DEP,$(DEPS_$(SCAN_DIR)/$(2)/Makefile) $(SCAN_DEPS),$(wildcard $(if $(filter /%,$(DEP)),$(DEP),$(SCAN_DIR)/$(2)/$(DEP))))
 	{ \
 		$$(call progress,Collecting $(SCAN_NAME) info: $(SCAN_DIR)/$(2)) \
diff --git a/include/toplevel.mk b/include/toplevel.mk
index 03c5b1f548..d13a37013c 100644
--- a/include/toplevel.mk
+++ b/include/toplevel.mk
@@ -69,6 +69,12 @@ ULIMIT_FIX=_limit=`ulimit -n`; [ "$$_limit" = "unlimited" -o "$$_limit" -ge 1024
 
 prepare-mk: FORCE ;
 
+ifdef SDK
+  IGNORE_PACKAGES = linux
+endif
+
+_ignore = $(foreach p,$(IGNORE_PACKAGES),--ignore $(p))
+
 prepare-tmpinfo: FORCE
 	@+$(MAKE) -r -s staging_dir/host/.prereq-build $(PREP_MK)
 	mkdir -p tmp/info
@@ -76,7 +82,7 @@ prepare-tmpinfo: FORCE
 	$(_SINGLE)$(NO_TRACE_MAKE) -j1 -r -s -f include/scan.mk SCAN_TARGET="targetinfo" SCAN_DIR="target/linux" SCAN_NAME="target" SCAN_DEPS="profiles/*.mk $(TOPDIR)/include/kernel*.mk $(TOPDIR)/include/target.mk" SCAN_DEPTH=2 SCAN_EXTRA="" SCAN_MAKEOPTS="TARGET_BUILD=1"
 	for type in package target; do \
 		f=tmp/.$${type}info; t=tmp/.config-$${type}.in; \
-		[ "$$t" -nt "$$f" ] || ./scripts/metadata.pl $${type}_config "$$f" > "$$t" || { rm -f "$$t"; echo "Failed to build $$t"; false; break; }; \
+		[ "$$t" -nt "$$f" ] || ./scripts/metadata.pl $(_ignore) $${type}_config "$$f" > "$$t" || { rm -f "$$t"; echo "Failed to build $$t"; false; break; }; \
 	done
 	[ tmp/.config-feeds.in -nt tmp/.packagefeeds ] || ./scripts/feeds feed_config > tmp/.config-feeds.in
 	./scripts/metadata.pl package_mk tmp/.packageinfo > tmp/.packagedeps || { rm -f tmp/.packagedeps; false; }