diff --git a/core/Makefile b/core/Makefile
index a7df61f..1ab0fe5 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -206,7 +206,7 @@
 	@mkdir -p $(dir $@)
 	$(hide) grep -v "$(subst $(space),\|,$(strip \
 	            $(sdk_build_prop_remove)))" $< > $@.tmp
-	$(hide) for x in $(sdk_build_prop_remove); do \
+	$(hide) for x in $(strip $(sdk_build_prop_remove)); do \
 	            echo "$$x"generic >> $@.tmp; done
 	$(hide) mv $@.tmp $@
 
@@ -320,11 +320,11 @@
 define build-image-kernel-modules-depmod
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: .KATI_IMPLICIT_OUTPUTS := $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.alias $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.softdep $(3)/$(DEPMOD_STAGING_SUBDIR)/$(5)
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: $(DEPMOD)
-$(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_MODULES := $(1)
+$(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_MODULES := $(strip $(1))
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_MOUNT_POINT := $(2)
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_MODULE_DIR := $(3)/$(DEPMOD_STAGING_SUBDIR)/$(2)/lib/modules/$(8)
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_STAGING_DIR := $(3)
-$(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_LOAD_MODULES := $(4)
+$(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_LOAD_MODULES := $(strip $(4))
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_LOAD_FILE := $(3)/$(DEPMOD_STAGING_SUBDIR)/$(5)
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_MODULE_ARCHIVE := $(6)
 $(3)/$(DEPMOD_STAGING_SUBDIR)/modules.dep: PRIVATE_OUTPUT_DIR := $(7)
@@ -5148,10 +5148,10 @@
 ifeq ($(AB_OTA_UPDATER),true)
 	@# When using the A/B updater, include the updater config files in the zip.
 	$(hide) cp $(TOPDIR)system/update_engine/update_engine.conf $(zip_root)/META/update_engine_config.txt
-	$(hide) for part in $(AB_OTA_PARTITIONS); do \
+	$(hide) for part in $(strip $(AB_OTA_PARTITIONS)); do \
 	  echo "$${part}" >> $(zip_root)/META/ab_partitions.txt; \
 	done
-	$(hide) for conf in $(AB_OTA_POSTINSTALL_CONFIG); do \
+	$(hide) for conf in $(strip $(AB_OTA_POSTINSTALL_CONFIG)); do \
 	  echo "$${conf}" >> $(zip_root)/META/postinstall_config.txt; \
 	done
 ifdef OSRELEASED_DIRECTORY
@@ -5948,7 +5948,7 @@
 $(INTERNAL_SDK_TARGET): $(deps)
 	@echo "Package SDK: $@"
 	$(hide) rm -rf $(PRIVATE_DIR) $@
-	$(hide) for f in $(target_gnu_MODULES); do \
+	$(hide) for f in $(strip $(target_gnu_MODULES)); do \
 	  if [ -f $$f ]; then \
 	    echo SDK: $(if $(SDK_GNU_ERROR),ERROR:,warning:) \
 	        including GNU target $$f >&2; \
diff --git a/core/main.mk b/core/main.mk
index 21f4387..cb97503 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -355,7 +355,7 @@
 ADDITIONAL_PRODUCT_PROPERTIES += ro.build.characteristics=$(TARGET_AAPT_CHARACTERISTICS)
 
 ifeq ($(AB_OTA_UPDATER),true)
-ADDITIONAL_PRODUCT_PROPERTIES += ro.product.ab_ota_partitions=$(subst $(space),$(comma),$(AB_OTA_PARTITIONS))
+ADDITIONAL_PRODUCT_PROPERTIES += ro.product.ab_ota_partitions=$(subst $(space),$(comma),$(strip $(AB_OTA_PARTITIONS)))
 endif
 
 # -----------------------------------------------------------------
diff --git a/core/product_config.mk b/core/product_config.mk
index a9f3d34..99ff8aa 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -77,6 +77,16 @@
 $(sort $(shell find $(2) -name "$(1)" -type f | $(SED_EXTENDED) "s:($(2)/?(.*)):\\1\\:$(3)/\\2:" | sed "s://:/:g"))
 endef
 
+#
+# Convert file file to the PRODUCT_COPY_FILES/PRODUCT_SDK_ADDON_COPY_FILES
+# format: for each file F return $(F):$(PREFIX)/$(notdir $(F))
+# $(1): files list
+# $(2): prefix
+
+define copy-files
+$(foreach f,$(1),$(f):$(2)/$(notdir $(f)))
+endef
+
 # ---------------------------------------------------------------
 # Check for obsolete PRODUCT- and APP- goals
 ifeq ($(CALLED_FROM_SETUP),true)
diff --git a/core/product_config.rbc b/core/product_config.rbc
index 8e85c4b..c7ec794 100644
--- a/core/product_config.rbc
+++ b/core/product_config.rbc
@@ -16,6 +16,7 @@
 
 """Runtime functions."""
 
+_soong_config_namespaces_key = "$SOONG_CONFIG_NAMESPACES"
 def _global_init():
     """Returns dict created from the runtime environment."""
     globals = dict()
@@ -29,6 +30,7 @@
         globals[k] = getattr(rblf_cli, k)
 
     globals.setdefault("PRODUCT_SOONG_NAMESPACES", [])
+    globals.setdefault(_soong_config_namespaces_key, {})
     _envsetup_init(globals)
 
     # Variables that should be defined.
@@ -74,7 +76,12 @@
     if _options.print_globals:
         print()
         for attr, val in sorted(globals.items()):
-            if attr not in _globals_base:
+            if attr == _soong_config_namespaces_key:
+                __print_attr("SOONG_CONFIG_NAMESPACES", val.keys())
+                for nsname, nsvars in sorted(val.items()):
+                    for var, val in sorted(nsvars.items()):
+                        __print_attr("SOONG_CONFIG_%s_%s" % (nsname, var), val)
+            elif attr not in _globals_base:
                 __print_attr(attr, val)
 
 def __printvars_rearrange_list(value_list):
@@ -268,6 +275,20 @@
     """Returns configuration item for the inherited module."""
     return (pcm_name,)
 
+def _add_soong_config_namespace(g, nsname):
+    """Adds given namespace."""
+
+    # A value cannot be updated, so we need to create a new dictionary
+    old = g[_soong_config_namespaces_key]
+    g[_soong_config_namespaces_key] = dict([(k,v) for k,v in old.items()] + [(nsname, {})])
+
+def _add_soong_config_var_value(g, nsname, var, value):
+    """Defines a variable and adds it to the given namespace."""
+    ns = g[_soong_config_namespaces_key].get(nsname)
+    if ns == None:
+        fail("no such namespace: " + nsname)
+    ns[var] = value
+
 def _addprefix(prefix, string_or_list):
     """Adds prefix and returns a list.
 
@@ -523,6 +544,8 @@
 # Settings used during debugging.
 _options = __get_options()
 rblf = struct(
+    add_soong_config_namespace = _add_soong_config_namespace,
+    add_soong_config_var_value = _add_soong_config_var_value,
     addprefix = _addprefix,
     addsuffix = _addsuffix,
     copy_if_exists = _copy_if_exists,
diff --git a/tests/device.rbc b/tests/device.rbc
index 5d4e70c..d9100fd 100644
--- a/tests/device.rbc
+++ b/tests/device.rbc
@@ -22,6 +22,12 @@
 ### include $(LOCAL_PATH)/include1.mk
 ### PRODUCT_PACKAGES += dev_after
 ### PRODUCT_COPY_FILES += $(call find-copy-subdir-files,audio_platform_info*.xml,device/google/redfin/audio,$(TARGET_COPY_OUT_VENDOR)/etc) xyz
+### $(call add_soong_namespace,NS1)
+### $(call add_soong_config_var_value,NS1,v1,abc)
+### $(call add_soong_config_var_value,NS1,v2,def)
+### $(call add_soong_namespace,NS2)
+### $(call add_soong_config_var_value,NS2,v3,abc)
+### $(call add_soong_config_var_value,NS2,v3,xyz)
 
 load("//build/make/core:product_config.rbc", "rblf")
 load(":part1.rbc", _part1_init = "init")
@@ -40,3 +46,10 @@
   cfg["PRODUCT_PACKAGES"] += ["dev_after"]
   cfg["PRODUCT_COPY_FILES"] += (rblf.find_and_copy("audio_platform_info*.xml", "device/google/redfin/audio", "||VENDOR-PATH-PH||/etc") +
       ["xyz"])
+  rblf.add_soong_config_namespace(g, "NS1")
+  rblf.add_soong_config_var_value(g, "NS1", "v1", "abc")
+  rblf.add_soong_config_var_value(g, "NS1", "v2", "def")
+  rblf.add_soong_config_namespace(g, "NS2")
+  rblf.add_soong_config_var_value(g, "NS2", "v3", "abc")
+  rblf.add_soong_config_var_value(g, "NS2", "v3", "xyz")
+
diff --git a/tests/run.rbc b/tests/run.rbc
index 4cda180..da88886 100644
--- a/tests/run.rbc
+++ b/tests/run.rbc
@@ -63,3 +63,17 @@
     },
     { k:v for k, v in sorted(config.items()) }
 )
+
+ns = globals["$SOONG_CONFIG_NAMESPACES"]
+assert_eq(
+    {
+        "NS1": {
+            "v1": "abc",
+            "v2": "def"
+        },
+        "NS2": {
+            "v3": "xyz"
+        }
+    },
+    {k:v for k, v in sorted(ns.items()) }
+)