diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index 3417f54..2c16084 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -1,55 +1,38 @@
 LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
 
-# files that live under /system/etc/...
-
-copy_from := \
-	etc/hosts
-
-
-copy_to := $(addprefix $(TARGET_OUT)/,$(copy_from))
-copy_from := $(addprefix $(LOCAL_PATH)/,$(copy_from))
-
-$(copy_to) : PRIVATE_MODULE := system_etcdir
-$(copy_to) : $(TARGET_OUT)/% : $(LOCAL_PATH)/% | $(ACP)
-	$(transform-prebuilt-to-target)
-
-ALL_PREBUILT += $(copy_to)
-
-
-# files that live under /...
-
+#######################################
+# init.rc
 # Only copy init.rc if the target doesn't have its own.
 ifneq ($(TARGET_PROVIDES_INIT_RC),true)
-file := $(TARGET_ROOT_OUT)/init.rc
-$(file) : $(LOCAL_PATH)/init.rc | $(ACP)
-	$(transform-prebuilt-to-target)
-ALL_PREBUILT += $(file)
-$(INSTALLED_RAMDISK_TARGET): $(file)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := init.rc
+LOCAL_SRC_FILES := $(LOCAL_MODULE)
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
+
+include $(BUILD_PREBUILT)
 endif
+#######################################
+# init.environ.rc
 
-file := $(TARGET_ROOT_OUT)/ueventd.rc
-$(file) : $(LOCAL_PATH)/ueventd.rc | $(ACP)
-	$(transform-prebuilt-to-target)
-ALL_PREBUILT += $(file)
-$(INSTALLED_RAMDISK_TARGET): $(file)
+include $(CLEAR_VARS)
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE := init.environ.rc
+LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
 
-# init.usb.rc is handled by build/target/product/core.rc
-
-
+# Put it here instead of in init.rc module definition,
+# because init.rc is conditionally included.
+#
 # create some directories (some are mount points)
-DIRS := $(addprefix $(TARGET_ROOT_OUT)/, \
-		sbin \
-		dev \
-		proc \
-		sys \
-		system \
-		data \
-	) \
-	$(TARGET_OUT_DATA)
+LOCAL_POST_INSTALL_CMD := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \
+    sbin dev proc sys system data)
 
-$(DIRS):
-	@echo Directory: $@
-	@mkdir -p $@
+include $(BUILD_SYSTEM)/base_rules.mk
 
-ALL_PREBUILT += $(DIRS)
+$(LOCAL_BUILT_MODULE): $(LOCAL_PATH)/init.environ.rc.in
+	@echo "Generate: $< -> $@"
+	@mkdir -p $(dir $@)
+	$(hide) sed -e 's?%BOOTCLASSPATH%?$(PRODUCT_BOOTCLASSPATH)?g' $< >$@
+
+#######################################
diff --git a/rootdir/init.environ.rc.in b/rootdir/init.environ.rc.in
new file mode 100644
index 0000000..d2f74c0
--- /dev/null
+++ b/rootdir/init.environ.rc.in
@@ -0,0 +1,12 @@
+# set up the global environment
+on init
+    export PATH /sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin
+    export LD_LIBRARY_PATH /vendor/lib:/system/lib
+    export ANDROID_BOOTLOGO 1
+    export ANDROID_ROOT /system
+    export ANDROID_ASSETS /system/app
+    export ANDROID_DATA /data
+    export ANDROID_STORAGE /storage
+    export ASEC_MOUNTPOINT /mnt/asec
+    export LOOP_MOUNTPOINT /mnt/obb
+    export BOOTCLASSPATH %BOOTCLASSPATH%
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 3990287..d4d7487 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -4,6 +4,7 @@
 # This is a common source of Android security bugs.
 #
 
+import /init.environ.rc
 import /init.usb.rc
 import /init.${ro.hardware}.rc
 import /init.trace.rc
@@ -27,18 +28,6 @@
 
 loglevel 3
 
-# setup the global environment
-    export PATH /sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin
-    export LD_LIBRARY_PATH /vendor/lib:/system/lib
-    export ANDROID_BOOTLOGO 1
-    export ANDROID_ROOT /system
-    export ANDROID_ASSETS /system/app
-    export ANDROID_DATA /data
-    export ANDROID_STORAGE /storage
-    export ASEC_MOUNTPOINT /mnt/asec
-    export LOOP_MOUNTPOINT /mnt/obb
-    export BOOTCLASSPATH /system/framework/core.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/framework2.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/apache-xml.jar:/system/framework/webviewchromium.jar
-
 # Backward compatibility
     symlink /system/etc /etc
     symlink /sys/kernel/debug /d