Cannot link OpenCV Android inside Qt

问题:

I tried to use OpenCV with Android inside Qt, but I cannot successfully link it inside Qt, I get some undefined reference errors to the side libraries (like libjpeg, libtegra_hal etc.). I used this SO answer as a reference guide.

This is my .pro file -

INCLUDEPATH += "$$PWD/../../External-Libraries/opencv-android/sdk/native/jni/include"  android { # 3rd party libs LIBS += \     -L"$$PWD/../../External-Libraries/opencv-android/sdk/native/3rdparty/libs/armeabi-v7a"\     -llibtiff\     -llibjpeg\     -llibjasper\     -llibpng\     -llibwebp\     -lIlmImf\     -ltbb\     -ltegra_hal # opencv libs LIBS += -L"$$PWD/../../External-Libraries/opencv-android/sdk/native/libs/armeabi-v7a"\     -lopencv_core\     -lopencv_highgui\     -lopencv_java3\     -lopencv_calib3d\     -lopencv_imgcodecs\     -lopencv_imgproc\     -lopencv_flann\     -lopencv_features2d\     -lopencv_ml\     -lopencv_objdetect\     -lopencv_photo\     -lopencv_shape\     -lopencv_stitching\     -lopencv_superres\     -lopencv_video\     -lopencv_videoio\     -lopencv_videostab ANDROID_PACKAGE_SOURCE_DIR=$$PWD/android } 

I'm using Qt 5.8 and OpenCV 3.2.0. The errors are in this format -

libopencv_core.a: ... error: undefined reference to (method of one of the 3rd party libs)

This is an example -

libopencv_core.a(arithm.cpp.o):arithm.cpp:function cv::hal::cmp8u(unsigned char const*, unsigned int, unsigned char const*, unsigned int, unsigned char*, unsigned int, int, int, void*): error: undefined reference to 'carotene_o4t::isSupportedConfiguration()'

Where carotene is a function of libtegra_hal.a. Is there any way to link the opencv libs with the 3rd party libs?

Thanks.

EDIT:

I can successfully compile and run the OpenCV 3.1.0 library, but not the 3.2.0 library.

回答1:

The workaround is: either use OpenCV 3.1.0 or older or compile OpenCV 3.2.0 with CAROTENE disabled.

I can't seem to find any other solutions for now.

文章来源: Cannot link OpenCV Android inside Qt