Android上的opencv链接错误

我正在努力 OpenCV 在Android上工作。我学过几门教程,到目前为止还没有成功。一种方法是 OpenCVManager 但是当我尝试这些样品时,它们不起作用。

我现在尝试的方法是 NDK 并通过添加opencv CMake 和 Android.mk .到目前为止还没有成功。一般来说,哪种方法是开始使用OpenCV和Android的最佳方法?

我试图创建一个空矩阵 cv::Mat tmp 但是我总是会得到一个链接错误。

../../../../src/main/jniLibs/jni/include/opencv2/core/mat.inl.hpp:704: error: undefined reference to 'cv::fastFree(void*)'

我尝试过添加不同的呼叫,比如 -lopencv_core 等等。我不确定的一件事是如何链接。静态libs包含 libopencv_core.so 等等。然而, jni/libs/ 仅包含 libopencv_java3.so .确切地说,我应该链接哪些库,以及如何链接?

CMakeLists.txt

cmake_minimum_required(VERSION 3.4.1)

include_directories(src/main/jniLibs/jni/include)
add_library( lib_opencv SHARED IMPORTED )
set_target_properties(lib_opencv PROPERTIES IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/src/main/jniLibs/libs/${ANDROID_ABI}/libopencv_java3.so)
add_library( native-lib SHARED src/main/cpp/native-lib.cpp )


find_library( # Sets the name of the path variable.
              log-lib

              # Specifies the name of the NDK library that
              # you want CMake to locate.
              log )

target_link_libraries( # Specifies the target library.
                       native-lib

                       # Links the target library to the log library
                       # included in the NDK.
                       ${log-lib} )

安卓.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

OPENCV_LIB_TYPE:=SHARED
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on

include {/home/myname/Code/Libraries/Android/OpenCV-android-sdk/sdk/native/jni/OpenCV.mk}

LOCAL_SRC_FILES  += $(LOCAL_PATH)/native-lib.cpp
LOCAL_C_INCLUDES += {/home/myname/Code/Libraries/Android/OpenCV-android-sdk/sdk/native/jni/include}
include $(PREBUILT_STATIC_LIBRARY)
LOCAL_LDLIBS     += -llog -ldl
LOCAL_CFLAGS    += -DOPENCV_OLDER_VISION

LOCAL_CPP_FEATURES += exceptions (Recommended)
LOCAL_CPPFLAGS += -fexceptions


LOCAL_MODULE     := native-lib

include $(BUILD_SHARED_LIBRARY)