diff --git a/Makefile b/Makefile
index 7d7d225f..9459f113 100644
--- a/Makefile
+++ b/Makefile
@@ -180,12 +180,12 @@ $(APPS): $(LITEOS_TARGET) sysroot
 prepare:
 	$(HIDE)mkdir -p $(OUT)/musl
 ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
-	$(HIDE)cp -f $$($(CC) --target=$(LLVM_TARGET) --sysroot=$(SYSROOT_PATH) $(LITEOS_CFLAGS) -print-file-name=libc.so) $(OUT)/musl
-	$(HIDE)cp -f $$($(GPP) --target=$(LLVM_TARGET) --sysroot=$(SYSROOT_PATH) $(LITEOS_CXXFLAGS) -print-file-name=libc++.so) $(OUT)/musl
+	$(HIDE)cp -fp $$($(CC) --target=$(LLVM_TARGET) --sysroot=$(SYSROOT_PATH) $(LITEOS_CFLAGS) -print-file-name=libc.so) $(OUT)/musl
+	$(HIDE)cp -fp $$($(GPP) --target=$(LLVM_TARGET) --sysroot=$(SYSROOT_PATH) $(LITEOS_CXXFLAGS) -print-file-name=libc++.so) $(OUT)/musl
 else
-	$(HIDE)cp -f $(LITEOS_COMPILER_PATH)/target/usr/lib/libc.so $(OUT)/musl
-	$(HIDE)cp -f $(LITEOS_COMPILER_PATH)/arm-linux-musleabi/lib/libstdc++.so.6 $(OUT)/musl
-	$(HIDE)cp -f $(LITEOS_COMPILER_PATH)/arm-linux-musleabi/lib/libgcc_s.so.1 $(OUT)/musl
+	$(HIDE)cp -fp $(LITEOS_COMPILER_PATH)/target/usr/lib/libc.so $(OUT)/musl
+	$(HIDE)cp -fp $(LITEOS_COMPILER_PATH)/arm-linux-musleabi/lib/libstdc++.so.6 $(OUT)/musl
+	$(HIDE)cp -fp $(LITEOS_COMPILER_PATH)/arm-linux-musleabi/lib/libgcc_s.so.1 $(OUT)/musl
 	$(STRIP) $(OUT)/musl/*
 endif
 
diff --git a/tools/scripts/make_rootfs/rootfsdir.sh b/tools/scripts/make_rootfs/rootfsdir.sh
index a7c571e4..269f097f 100755
--- a/tools/scripts/make_rootfs/rootfsdir.sh
+++ b/tools/scripts/make_rootfs/rootfsdir.sh
@@ -46,14 +46,14 @@ if [ -d "${BIN_DIR}" ] && [ "$(ls -A "${BIN_DIR}")" != "" ]; then
     for el in ${NEED_COPYTO_OUTDIR[@]}
     do
         if [ -e ${BIN_DIR}/$el ] && [ "${BIN_DIR}/$el" != "${OUT_DIR}/bin/$el" ]; then
-            cp -f ${BIN_DIR}/$el ${OUT_DIR}/bin/$el
+            cp -u ${BIN_DIR}/$el ${OUT_DIR}/bin/$el
         fi
     done
 fi
 cp -f ${LIB_DIR}/* ${ROOTFS_DIR}/lib
-cp -f ${LIB_DIR}/* ${OUT_DIR}/libs
+cp -u ${LIB_DIR}/* ${OUT_DIR}/libs
 
 if [ -e ${ETC_DIR} ]; then
 cp -f ${ETC_DIR}/.mkshrc ${ROOTFS_DIR}/etc
-cp -f ${ETC_DIR}/.mkshrc ${OUT_DIR}/etc
+cp -u ${ETC_DIR}/.mkshrc ${OUT_DIR}/etc
 fi