diff --git a/core/dumpvar.mk b/core/dumpvar.mk
new file mode 100644
index 0000000..fa20ece
--- /dev/null
+++ b/core/dumpvar.mk
@@ -0,0 +1,77 @@
+# ---------------------------------------------------------------
+# the setpath shell function in envsetup.sh uses this to figure out
+# what to add to the path given the config we have chosen.
+ifeq ($(CALLED_FROM_SETUP),true)
+
+ABP:=$(PWD)/$(HOST_OUT_EXECUTABLES)
+
+ifeq ($(TARGET_SIMULATOR),true)
+	ABP:=$(ABP):$(TARGET_OUT_EXECUTABLES)
+else
+	# this should be copied to HOST_OUT_EXECUTABLES instead
+	ABP:=$(ABP):$(PWD)/prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-eabi-4.4.0/bin
+endif
+ANDROID_BUILD_PATHS := $(ABP)
+ANDROID_PREBUILTS := prebuilt/$(HOST_PREBUILT_TAG)
+
+# The "dumpvar" stuff lets you say something like
+#
+#     CALLED_FROM_SETUP=true \
+#       make -f config/envsetup.make dumpvar-TARGET_OUT
+# or
+#     CALLED_FROM_SETUP=true \
+#       make -f config/envsetup.make dumpvar-abs-HOST_OUT_EXECUTABLES
+#
+# The plain (non-abs) version just dumps the value of the named variable.
+# The "abs" version will treat the variable as a path, and dumps an
+# absolute path to it.
+#
+dumpvar_goals := \
+	$(strip $(patsubst dumpvar-%,%,$(filter dumpvar-%,$(MAKECMDGOALS))))
+ifdef dumpvar_goals
+
+  ifneq ($(words $(dumpvar_goals)),1)
+    $(error Only one "dumpvar-" goal allowed. Saw "$(MAKECMDGOALS)")
+  endif
+
+  # If the goal is of the form "dumpvar-abs-VARNAME", then
+  # treat VARNAME as a path and return the absolute path to it.
+  absolute_dumpvar := $(strip $(filter abs-%,$(dumpvar_goals)))
+  ifdef absolute_dumpvar
+    dumpvar_goals := $(patsubst abs-%,%,$(dumpvar_goals))
+    DUMPVAR_VALUE := $(PWD)/$($(dumpvar_goals))
+    dumpvar_target := dumpvar-abs-$(dumpvar_goals)
+  else
+    DUMPVAR_VALUE := $($(dumpvar_goals))
+    dumpvar_target := dumpvar-$(dumpvar_goals)
+  endif
+
+.PHONY: $(dumpvar_target)
+$(dumpvar_target):
+	@echo $(DUMPVAR_VALUE)
+
+endif # dumpvar_goals
+
+ifneq ($(dumpvar_goals),report_config)
+PRINT_BUILD_CONFIG:=
+endif
+
+endif # CALLED_FROM_SETUP
+
+
+ifneq ($(PRINT_BUILD_CONFIG),)
+$(info ============================================)
+$(info   PLATFORM_VERSION_CODENAME=$(PLATFORM_VERSION_CODENAME))
+$(info   PLATFORM_VERSION=$(PLATFORM_VERSION))
+$(info   TARGET_PRODUCT=$(TARGET_PRODUCT))
+$(info   TARGET_BUILD_VARIANT=$(TARGET_BUILD_VARIANT))
+$(info   TARGET_SIMULATOR=$(TARGET_SIMULATOR))
+$(info   TARGET_BUILD_TYPE=$(TARGET_BUILD_TYPE))
+$(info   TARGET_BUILD_APPS=$(TARGET_BUILD_APPS))
+$(info   TARGET_ARCH=$(TARGET_ARCH))
+$(info   HOST_ARCH=$(HOST_ARCH))
+$(info   HOST_OS=$(HOST_OS))
+$(info   HOST_BUILD_TYPE=$(HOST_BUILD_TYPE))
+$(info   BUILD_ID=$(BUILD_ID))
+$(info ============================================)
+endif