Android Studio NDK linker error undefined reference to 'cv::_OutputArray::_OutputArray(cv::Mat&)'

Question

I\'m working on an Android project which uses NDK, in which I have used opencv for some capture and image effects stuff. Here\'s how my Android.mk look like:

LOC         


        

Answer 1

Fixed it. I dont know the exact reason how it get fixed. I reverted all the changes I've made in Android.mk , Application.mk and OpenCV.mk, Now my Adnroid.mk looks like this:

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
OPENCV_INSTALL_MODULES:=on
include $(LOCAL_PATH)/sdk/native/jni/OpenCV.mk

LOCAL_MODULE    := Scanner
LOCAL_SRC_FILES := scan.cpp
LOCAL_LDLIBS    += -lm -llog -landroid
LOCAL_LDFLAGS += -ljnigraphics
include $(BUILD_SHARED_LIBRARY)

And Application.mk:

APP_STL := stlport_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := all
APP_PLATFORM := android-14

And here's how my OpenCV.mk looks like:

https://pastebin.com/zuqM6tbu

I guess I have missed specyfying the correct path or my library files(.so and .a) might be of different versions than the header files included. If anyone got other ideas, please post a comment.