diff --git a/apps/mksh/Makefile b/apps/mksh/Makefile
index 43f215f1a59fa0804bbb7e6c20a707df918630ad..3431dd5c9a6b39a0d7b3e6430ab553e4263dc9eb 100755
--- a/apps/mksh/Makefile
+++ b/apps/mksh/Makefile
@@ -39,11 +39,16 @@ BUILD_DIR := $(MKSH_DIR)/build
 BUILD_LOG := $(MKSH_DIR)/build.log
 TARGET_OS := OpenHarmony
 
-LOCAL_CFLAGS := -flto -fdata-sections -ffunction-sections -Oz -fstack-protector-strong -D_FORTIFY_SOURCE=2
-LOCAL_CFLAGS += --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
+LOCAL_CFLAGS := -flto -fdata-sections -ffunction-sections -fstack-protector-strong -D_FORTIFY_SOURCE=2
 LOCAL_CFLAGS += -DMKSH_DISABLE_TTY_WARNING -DMKSH_SMALL=1 -DMKSH_ASSUME_UTF8=1 -DMKSH_SMALL_BUT_FAST=0 -DMKSH_S_NOVI=1 -DHAVE_CAN_FSTACKPROTECTORSTRONG=1
 LOCAL_CFLAGS += -DMKSH_LESS_CMDLINE_EDITING -DMKSH_LESS_BUILDINS -DMKSH_NO_INITCOMS -DADAPT_FOR_LITEOS_A
-LOCAL_LDFLAGS := -Wl,--gc-sections -flto -O2 --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
+LOCAL_LDFLAGS := -Wl,--gc-sections -flto -O2
+
+ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
+LOCAL_CFLAGS += -Oz --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
+else
+LOCAL_CFLAGS += -O2
+endif
 
 all:$(MKSH)
 
@@ -64,8 +69,10 @@ endif
 	$(HIDE)$(CP) $(MKSH) $(APPS_OUT)
 	$(HIDE)mkdir -p $(ETC_OUT)
 	$(HIDE)$(CP) -rf $(BUILD_DIR)/.mkshrc $(ETC_OUT)/
+	$(HIDE)$(RM) $(BUILD_DIR) $(BUILD_LOG)
 
 clean:
 	$(HIDE)$(RM) $(MKSH) $(BUILD_DIR) $(BUILD_LOG)
 
+
 .PHONY: all $(MKSH) clean
diff --git a/apps/toybox/Makefile b/apps/toybox/Makefile
index c4838eb7b1a21dad11ac5aab2a66a18c48afcf01..2ca70f2f0add7f0f97603b341f13ef067b377d57 100644
--- a/apps/toybox/Makefile
+++ b/apps/toybox/Makefile
@@ -38,6 +38,13 @@ BUILD_DIR := $(TOYBOX_DIR)/build
 BUILD_LOG := $(TOYBOX_DIR)/build.log
 OUTNAME := $(TOYBOX)
 
+CFLAGS := -D_FORTIFY_SOURCE=2 -fstack-protector-strong
+LDFLAGS :=
+ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
+CFLAGS += --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
+LDFLAGS += --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
+endif
+
 $(TOYBOX):
 ifneq ($(wildcard $(BUILD_DIR)),)
 	$(HIDE)echo "not clean, rebuilding now";
@@ -46,12 +53,14 @@ else
 	$(HIDE)$(CP) $(LITEOSTHIRDPARTY)/$(TOYBOX)/. $(BUILD_DIR)
 	$(HIDE)$(CP) -p $(LITEOSTHIRDPARTY)/$(TOYBOX)/porting/liteos_a/. $(BUILD_DIR)
 endif
-	$(HIDE)CFLAGS="-D_FORTIFY_SOURCE=2 -fstack-protector-strong --target=$(LLVM_TARGET) $(LLVM_SYSROOT)" CC="$(CC)" OUTNAME=$(OUTNAME) \
-	LDFLAGS="--target=$(LLVM_TARGET) $(LLVM_SYSROOT)" \
+
+	$(HIDE)CFLAGS="$(CFLAGS)" CC="$(CC)" OUTNAME="$(OUTNAME)" \
+	LDFLAGS="$(LDFLAGS)" STRIP="$(STRIP)" \
 	make -C $(BUILD_DIR) toybox -j> $(BUILD_LOG) 2>&1
 	$(HIDE)$(CP) $(BUILD_DIR)/$(TOYBOX) .
 	$(HIDE)mkdir -p $(APPS_OUT)
 	$(HIDE)$(CP) $(TOYBOX) $(APPS_OUT)
+	$(HIDE)$(RM) $(BUILD_DIR) $(BUILD_LOG)
 
 clean:
 	$(HIDE)$(RM) $(TOYBOX) $(BUILD_DIR) $(BUILD_LOG)