Android.mk include Opencv.mk

Android/Java
1

i want build an C++ executable file and run on android background
this is my android.mk file

LOCAL_PATH:= $(call my-dir)
# Specify the paths to the OpenCV static libraries
OPENCV_LIB_PATH := $(LOCAL_PATH)/OpenCV-android-sdk/sdk/native


include $(CLEAR_VARS)
OPENCV_INSTALL_MODULES:=on
OPENCV_LIB_TYPE:=STATIC
include $(OPENCV_LIB_PATH)/jni/OpenCV.mk
include $(BUILD_SHARED_LIBRARY)

include $(CLEAR_VARS)
SRC_CPP := $(wildcard $(LOCAL_PATH)/demo/*.cpp)


ifneq ($(filter rk1126 rk356x, $(strip $(TARGET_BOARD_PLATFORM))), )
LOCAL_CPPFLAGS += -DISP_HW_V21
endif
ifneq ($(filter rk3588, $(strip $(TARGET_BOARD_PLATFORM))), )
LOCAL_CPPFLAGS += -DISP_HW_V30
endif
LOCAL_SRC_FILES :=\
	demo/main_server.cpp

LOCAL_CPPFLAGS += -std=c++11 -Wno-error -DAndroid -fexceptions

LOCAL_CFLAGS += -Wno-error -Wno-return-type -DANDROID_VERSION_ABOVE_8_X -std=c++11 -frtti -fexceptions -fopenmp -w


LOCAL_C_INCLUDES := \
	$(LOCAL_PATH)/demo/ \
	$(LOCAL_PATH)/demo/include \
	$(OPENCV_LIB_PATH)/jni/include/opencv \
	$(OPENCV_LIB_PATH)/jni/include/opencv2 \


# LOCAL_STATIC_LIBRARIES := libopencv_core libopencv_highgui
	
LOCAL_SHARED_LIBRARIES +=  libpugixml\
							librknnrt
LOCAL_LDLIBS := -llog -ldl -lz
LOCAL_LDFLAGS += -fopenmp

LOCAL_CPPFLAGS += \
	-DUSING_METADATA_NAMESPACE=using\ ::android::hardware::camera::common::V1_0::helper::CameraMetadata
ifeq (1,$(strip $(shell expr $(PLATFORM_SDK_VERSION) \>= 26)))
endif
LOCAL_32_BIT_ONLY := true
LOCAL_MULTILIB := 32
LOCAL_PROPRIETARY_MODULE := true
LOCAL_MODULE:= socket_demo
include $(BUILD_EXECUTABLE)

but compile show me error

FAILED: 
In file included from build/make/core/executable.mk:79:
In file included from external/camera_engine_rkaiq/tests/rkisp_demo/Android.mk:18:
external/camera_engine_rkaiq/tests/rkisp_demo/OpenCV-android-sdk/sdk/native/jni/OpenCV.mk:41: error: external/camera_engine_rkaiq
/tests/rkisp_demo/OpenCV-android-sdk/sdk/native/jni/OpenCV-.mk: No such file or directory
18:43:00 ckati failed with: exit status 1

#### failed to build some targets (16 seconds) ####

can help me, Where is the setting error?
thanks