diff --git a/Makefile b/Makefile
index 9323917e..5653d002 100644
--- a/Makefile
+++ b/Makefile
@@ -116,6 +116,15 @@ else
 	$(HIDE)$(SCRIPTS_PATH)/mklibversion.sh
 endif
 
+##### make sysroot #####
+sysroot:
+ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
+ifeq ($(wildcard $(SYSROOT_PATH)/usr/include/$(LLVM_TARGET)/),)
+	$(HIDE)$(MAKE) -C $(SYSROOT_PATH)/build TARGETS=liteos_a_user
+endif
+	$(HIDE)echo "sysroot:" $(abspath $(SYSROOT_PATH))
+endif
+
 ##### make dynload #####
 -include $(LITEOS_MK_PATH)/dynload.mk
 
@@ -132,7 +141,7 @@ $(OUT): $(LITEOS_MENUCONFIG_H)
 $(BUILD):
 	$(HIDE)mkdir -p $(BUILD)
 
-$(LITEOS_LIBS_TARGET): $(__LIBS)
+$(LITEOS_LIBS_TARGET): $(__LIBS) sysroot
 	$(HIDE)for dir in $(LIB_SUBDIRS); \
 		do $(MAKE) -C $$dir all || exit 1; \
 	done
@@ -151,7 +160,7 @@ genconfig:$(MENUCONFIG_CONF)
 $(LITEOS_MENUCONFIG_H): .config
 	$(HIDE)$(MAKE) genconfig
 
-$(LITEOS_TARGET): $(__LIBS)
+$(LITEOS_TARGET): $(__LIBS) sysroot
 	$(HIDE)touch $(LOSCFG_ENTRY_SRC)
 
 	$(HIDE)for dir in $(LITEOS_SUBDIRS); \
@@ -165,18 +174,14 @@ $(LITEOS_TARGET): $(__LIBS)
 	$(OBJDUMP) -d $(OUT)/$@ >$(OUT)/$@.asm
 #	$(NM) -S --size-sort $(OUT)/$@ >$(OUT)/$@.size
 
-$(APPS): $(LITEOS_TARGET)
+$(APPS): $(LITEOS_TARGET) sysroot
 	$(HIDE)$(MAKE) -C apps all
 
-ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
-MULTILIB := $(patsubst $(shell $(CC) --target=$(LLVM_TARGET) $(ARCH_CFLAGS) -print-file-name=lib/$(LLVM_TARGET)/)%,%,$(dir $(shell $(CC) --target=$(LLVM_TARGET) $(ARCH_CFLAGS) -print-libgcc-file-name)))
-endif
-
 prepare:
 	$(HIDE)mkdir -p $(OUT)/musl
 ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
-	$(HIDE)cp -f $(SYSROOT_PATH)/usr/lib/$(LLVM_TARGET)/$(MULTILIB)/libc.so $(OUT)/musl
-	$(HIDE)cp -f $(LITEOS_COMPILER_PATH)/lib/$(LLVM_TARGET)/c++/$(MULTILIB)/libc++.so $(OUT)/musl
+	$(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
 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
@@ -225,3 +230,4 @@ update_all_config:
 	$(HIDE)test -f tools/build/config/$@ && cp tools/build/config/$@ .config && $(MENUCONFIG_MCONF) $(KCONFIG_FILE_PATH) && $(MENUCONFIG_CONF) --savedefconfig tools/build/config/$@ $(KCONFIG_FILE_PATH)
 
 .PHONY: all lib clean cleanall $(LITEOS_TARGET) debug release help update_all_config
+.PHONY: prepare sysroot cleanrootfs $(ROOTFS) $(ROOTFSDIR) $(APPS) menuconfig genconfig $(LITEOS_LIBS_TARGET) $(__LIBS) $(OUT)
diff --git a/apps/config.mk b/apps/config.mk
index 417446cb..21410057 100644
--- a/apps/config.mk
+++ b/apps/config.mk
@@ -44,7 +44,7 @@ CFLAGS := -std=c99 -fno-exceptions $(BASE_OPTS) $(LITEOS_COPTS_OPTMIZE)
 CXXFLAGS := -std=c++11 -fexceptions -fpermissive -frtti $(BASE_OPTS) $(LITEOS_COPTS_OPTMIZE)
 LDCFLAGS  := -lc
 ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
-LLVM_SYSROOT := --sysroot=$(SYSROOT_PATH) $(ARCH_CFLAGS)
+LLVM_SYSROOT := --sysroot=$(SYSROOT_PATH)
 LDCXXFLGS := -lc++ -lc++abi -lc
 else
 BASE_OPTS += -Wl,-z,relro,-z,now
diff --git a/apps/mksh/Makefile b/apps/mksh/Makefile
index 8aa8bcdc..182c7c01 100755
--- a/apps/mksh/Makefile
+++ b/apps/mksh/Makefile
@@ -39,10 +39,10 @@ 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=arm-liteos $(LLVM_SYSROOT)
+LOCAL_CFLAGS += --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
 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=arm-liteos $(LLVM_SYSROOT)
+LOCAL_LDFLAGS := -Wl,--gc-sections -flto -O2 --target=$(LLVM_TARGET) $(LLVM_SYSROOT)
 
 all:$(MKSH)
 
diff --git a/apps/toybox/Makefile b/apps/toybox/Makefile
index 0af3c951..d4345bae 100644
--- a/apps/toybox/Makefile
+++ b/apps/toybox/Makefile
@@ -46,8 +46,8 @@ 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=arm-liteos $(LLVM_SYSROOT)" CC="$(CC)" OUTNAME=$(OUTNAME) \
-	LDFLAGS="--target=arm-liteos $(LLVM_SYSROOT)" \
+	$(HIDE)CFLAGS="-D_FORTIFY_SOURCE=2 -fstack-protector-strong --target=$(LLVM_TARGET) $(LLVM_SYSROOT)" CC="$(CC)" OUTNAME=$(OUTNAME) \
+	LDFLAGS="--target=$(LLVM_TARGET) $(LLVM_SYSROOT)" \
 	make -C $(BUILD_DIR) toybox -j> $(BUILD_LOG) 2>&1
 	$(HIDE)$(CP) $(BUILD_DIR)/$(TOYBOX) .
 	$(HIDE)$(STRIP) $(TOYBOX)
diff --git a/kernel/extended/vdso/usr/Makefile b/kernel/extended/vdso/usr/Makefile
index 33b04ebc..dde4d96d 100644
--- a/kernel/extended/vdso/usr/Makefile
+++ b/kernel/extended/vdso/usr/Makefile
@@ -40,7 +40,7 @@ VDSO_INCLUDE := -I $(LITEOSTOPDIR)/kernel/extended/vdso/include \
 VDSO_CCFLAGS := -nostdlib -fPIC -fno-common -fno-strict-aliasing \
                 $(LITEOS_SSP) $(LITEOS_CORE_COPTS) $(WARNING_AS_ERROR) $(LITEOS_COPTS_OPTMIZE)
 ifeq ($(LOSCFG_COMPILER_CLANG_LLVM), y)
-VDSO_CCFLAGS += $(LLVM_EXTRA_OPTS) --sysroot=$(SYSROOT_PATH) $(ARCH_CFLAGS)
+VDSO_CCFLAGS += $(LLVM_EXTRA_OPTS) --sysroot=$(SYSROOT_PATH)
 endif
 
 VDSO_LDFLAGS := -shared -s -Bsymbolic -T los_vdso.ld