diff --git a/CleanSpec.mk b/CleanSpec.mk
index f4d45ff..c20d401 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -150,6 +150,12 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/APPS/*)
 
+# For GCC 4.7 toolchain change
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/EXECUTABLES)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/lib/*.o)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index 8be89c4..99b2f8c 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -35,7 +35,7 @@
 endif
 
 ifeq ($(strip $(TARGET_GCC_VERSION)),)
-TARGET_GCC_VERSION := 4.6
+TARGET_GCC_VERSION := 4.7
 endif
 
 TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_ARCH)/$(TARGET_ARCH_VARIANT).mk
diff --git a/envsetup.sh b/envsetup.sh
index 2d9d245..3aeb52b 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -116,7 +116,7 @@
     prebuiltdir=$(getprebuilt)
     gccprebuiltdir=$(get_abs_build_var ANDROID_GCC_PREBUILTS)
 
-    # defined in core/config.mk
+    # defined in core/combo/TARGET_linux-{arm,mips,x86}.mk
     targetgccversion=$(get_build_var TARGET_GCC_VERSION)
     export TARGET_GCC_VERSION=$targetgccversion