diff --git a/core/Makefile b/core/Makefile
index 2f7ebdf..2f8e8a7 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -320,7 +320,12 @@
 	@echo Package stats: $@
 	@mkdir -p $(dir $@)
 	$(hide) rm -f $@
+ifeq ($(PACKAGES_TO_STAT),)
+# Create empty package stats file if target builds no jar(s) or apk(s).
+	$(hide) touch $@
+else
 	$(hide) build/tools/dump-package-stats $^ > $@
+endif
 
 .PHONY: package-stats
 package-stats: $(PACKAGE_STATS_FILE)
@@ -1742,8 +1747,13 @@
 	@echo "Package apps: $@"
 	$(hide) rm -rf $@
 	$(hide) mkdir -p $(dir $@)
-	$(hide) zip -qj $@ $(TARGET_OUT_APPS)/*/*.apk $(TARGET_OUT_APPS_PRIVILEGED)/*/*.apk
-
+	$(hide) apps_to_zip=`find $(TARGET_OUT_APPS) $(TARGET_OUT_APPS_PRIVILEGED) -mindepth 2 -maxdepth 3 -name "*.apk"`; \
+	if [ -z "$$apps_to_zip" ]; then \
+		echo "No apps to zip up. Generating empty apps archive." ; \
+		a=$$(mktemp /tmp/XXXXXXX) && touch $$a && zip $@ $$a && zip -d $@ $$a; \
+	else \
+		zip -qj $@ $$apps_to_zip; \
+	fi
 
 #------------------------------------------------------------------
 # A zip of emma code coverage meta files. Generated for fully emma
@@ -1972,9 +1982,11 @@
 include $(sort $(wildcard $(BUILD_SYSTEM)/tasks/*.mk))
 -include $(sort $(wildcard vendor/*/build/tasks/*.mk))
 -include $(sort $(wildcard device/*/build/tasks/*.mk))
+-include $(sort $(wildcard product/*/build/tasks/*.mk))
 # Also the project-specific tasks
 -include $(sort $(wildcard vendor/*/*/build/tasks/*.mk))
 -include $(sort $(wildcard device/*/*/build/tasks/*.mk))
+-include $(sort $(wildcard product/*/*/build/tasks/*.mk))
 endif
 
 include $(BUILD_SYSTEM)/product-graph.mk
diff --git a/core/definitions.mk b/core/definitions.mk
index ecc7253..ce7602b 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2547,6 +2547,7 @@
 # Include any vendor specific definitions.mk file
 -include $(TOPDIR)vendor/*/build/core/definitions.mk
 -include $(TOPDIR)device/*/build/core/definitions.mk
+-include $(TOPDIR)product/*/build/core/definitions.mk
 
 # broken:
 #	$(foreach file,$^,$(if $(findstring,.a,$(suffix $file)),-l$(file),$(file)))
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 199c6b7..050d445 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -141,8 +141,8 @@
 board_config_mk := \
 	$(strip $(sort $(wildcard \
 		$(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk \
-		$(shell test -d device && find device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
-		$(shell test -d vendor && find vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
+		$(shell test -d device && find -L device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
+		$(shell test -d vendor && find -L vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
 	)))
 ifeq ($(board_config_mk),)
   $(error No config file found for TARGET_DEVICE $(TARGET_DEVICE))
diff --git a/core/ninja.mk b/core/ninja.mk
index def5823..7a3166a 100644
--- a/core/ninja.mk
+++ b/core/ninja.mk
@@ -120,9 +120,13 @@
 	@echo Starting build with ninja
 	+$(hide) PATH=prebuilts/ninja/$(HOST_PREBUILT_TAG)/:$$PATH NINJA_STATUS="$(NINJA_STATUS)" $(NINJA_MAKEPARALLEL) $(KATI_NINJA_SH) $(filter-out dist,$(ANDROID_TARGETS)) -C $(TOP) $(NINJA_ARGS)
 
+KATI_FIND_EMULATOR := --use_find_emulator
+ifeq ($(KATI_EMULATE_FIND),false)
+  KATI_FIND_EMULATOR :=
+endif
 $(KATI_BUILD_NINJA): $(KATI) $(MAKEPARALLEL) FORCE
 	@echo Running kati to generate build$(KATI_NINJA_SUFFIX).ninja...
-	+$(hide) $(KATI_MAKEPARALLEL) $(KATI) --ninja --ninja_dir=$(OUT_DIR) --ninja_suffix=$(KATI_NINJA_SUFFIX) --regen --ignore_dirty=$(OUT_DIR)/% --ignore_optional_include=$(OUT_DIR)/%.P --detect_android_echo --use_find_emulator -f build/core/main.mk $(KATI_TARGETS) --gen_all_targets BUILDING_WITH_NINJA=true
+	+$(hide) $(KATI_MAKEPARALLEL) $(KATI) --ninja --ninja_dir=$(OUT_DIR) --ninja_suffix=$(KATI_NINJA_SUFFIX) --regen --ignore_dirty=$(OUT_DIR)/% --ignore_optional_include=$(OUT_DIR)/%.P --detect_android_echo $(KATI_FIND_EMULATOR) -f build/core/main.mk $(KATI_TARGETS) --gen_all_targets BUILDING_WITH_NINJA=true
 
 KATI_CXX := $(CLANG_CXX) $(CLANG_HOST_GLOBAL_CFLAGS) $(CLANG_HOST_GLOBAL_CPPFLAGS)
 KATI_LD := $(CLANG_CXX) $(CLANG_HOST_GLOBAL_LDFLAGS)
diff --git a/core/product.mk b/core/product.mk
index a9af325..d6f2860 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -28,8 +28,9 @@
 # $(call ) isn't necessary.
 #
 define _find-android-products-files
-$(sort $(shell test -d device && find device -maxdepth 6 -name AndroidProducts.mk)) \
-  $(sort $(shell test -d vendor && find vendor -maxdepth 6 -name AndroidProducts.mk)) \
+$(sort $(shell test -d device && find -L device -maxdepth 6 -name AndroidProducts.mk)) \
+  $(sort $(shell test -d vendor && find -L vendor -maxdepth 6 -name AndroidProducts.mk)) \
+  $(sort $(shell test -d product && find -L product -maxdepth 6 -name AndroidProducts.mk)) \
   $(SRC_TARGET_DIR)/product/AndroidProducts.mk
 endef
 
diff --git a/envsetup.sh b/envsetup.sh
index f838d62..245d5a2 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -1535,7 +1535,8 @@
 
 # Execute the contents of any vendorsetup.sh files we can find.
 for f in `test -d device && find -L device -maxdepth 4 -name 'vendorsetup.sh' 2> /dev/null | sort` \
-         `test -d vendor && find -L vendor -maxdepth 4 -name 'vendorsetup.sh' 2> /dev/null | sort`
+         `test -d vendor && find -L vendor -maxdepth 4 -name 'vendorsetup.sh' 2> /dev/null | sort` \
+         `test -d product && find -L product -maxdepth 4 -name 'vendorsetup.sh' 2> /dev/null | sort`
 do
     echo "including $f"
     . $f