qt 안드로이드용 OpenCV 연동 .pro 파일 설정법

LIBS += -nostdlib++

android {
    contains(ANDROID_TARGET_ARCH,arm64-v8a) {
        isEmpty(OPENCV_ANDROID) {
            error("Let OPENCV_ANDROID point to the opencv-android-sdk, recommended: v4.0")
        }
        INCLUDEPATH += "$$OPENCV_ANDROID/sdk/native/jni/include"
        LIBS += \
            -L"$$OPENCV_ANDROID/sdk/native/libs/arm64-v8a" \
            -L"$$OPENCV_ANDROID/sdk/native/3rdparty/libs/arm64-v8a" \
            -llibtiff \
            -llibjpeg-turbo \
            -llibjasper \
            -llibpng \
            -lIlmImf \
            -ltbb \
            -lopencv_java4 \

        ANDROID_EXTRA_LIBS = $$OPENCV_ANDROID/sdk/native/libs/arm64-v8a/libopencv_java4.so
    } else {
        error("Unsupported architecture: $$ANDROID_TARGET_ARCH")
    }
}

## .pro 파일에 위와같이 작성한후 Project -> build steps -> additional argument에 

"OPENCV_ANDROID=/home/hyeok/opencv/OpenCV-android-sdk" 처럼 경로를 할당해준다.