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Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can build my library but when i use opencv3 cmake can't make file why?

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can build my library but when i use opencv3 cmake can't make file why? my error when i use OpenCV 2.4 in below image

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can build my library but when i use opencv3 cmake can't make file why? my error when i use OpenCV 2.4 in below image (picture link)

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can build my library but when i use opencv3 cmake can't make file why? my error when i use OpenCV 2.4 in below image (picture link)

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can build my library but when i use opencv3 opencv3 cmake can't can't make file why? but when i use opencv2.4, Cmake can built my library but when i want to link opencv to qt following error appear.

my error when i use OpenCV 2.4 in below image (picture link)

and my .pro file picture(picture link)

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can build my library but when i use opencv3 cmake can't make file why? why?this error happen in Cmake (picture LINK but when i use opencv2.4, Cmake can built my library but when i want to link opencv to qt following error appear.

my error when i use OpenCV 2.4 in below image (picture link)

and my .pro file picture(picture link)

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

if i use opencv2.4 the cmake can when i build my library but when i use opencv3 in cmnd window this error appear. Scanning dependencies of target opencv_videoio [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_images.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_encoder.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_decoder.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_cmu.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dshow.cpp.obj C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:122:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface IEnumPIDMap : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:122:11: error: 'struct IEnumPIDMap' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:139:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface IMPEG2PIDMap : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:139:11: error: 'struct IMPEG2PIDMap' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:227:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface ISampleGrabberCB : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:227:11: error: 'struct ISampleGrabberCB' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:239:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface ISampleGrabber : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:239:11: error: 'struct ISampleGrabber' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:646:7: error: base class 'struct ISampleGrabberCB' has accessible non-virtual destructor [-Werror=non-virtual-dtor] class SampleGrabberCallback : public ISampleGrabberCB{ ^ cc1plus.exe: some warnings being treated as errors modules\videoio\CMakeFiles\opencv_videoio.dir\build.make:187: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dshow.cpp.obj' failed mingw32-make[2]: opencv3* [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dshow.cpp.obj] Error 1 CMakeFiles\Makefile2:4506: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed mingw32-make[1]: cmake can't make file why?this error happen in Cmake (picture LINK [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2 makefile:148: recipe for target 'all' failed mingw32-make: ** [all] Error 2

but when i use opencv2.4, Cmake can built my library but when i want to link opencv to qt following error appear.

my error when i use OpenCV 2.4 in below image (picture link)

and my .pro file picture(picture link)

Hi,sorry for my simple question but i try to install opencv3 on qt ... I knew that i can't use prebuilt library for qt and i have to build it with mingw compiler(for it i use Cmake) but i test many ways but now i really confused, is there any way i can trust him.i use qt5.4.2

when i build opencv3 in cmnd window this error appear. appear.

Scanning dependencies of target opencv_videoio [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_images.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_encoder.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_mjpeg_decoder.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_cmu.cpp.obj [ 38%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dshow.cpp.obj C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:122:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface IEnumPIDMap : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:122:11: error: 'struct IEnumPIDMap' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:139:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface IMPEG2PIDMap : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:139:11: error: 'struct IMPEG2PIDMap' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:227:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface ISampleGrabberCB : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:227:11: error: 'struct ISampleGrabberCB' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:239:11: error: base class 'struct IUnknown' has accessible non-virtual destructor [-Werror=non-virtual-dtor] interface ISampleGrabber : public IUnknown ^ C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:239:11: error: 'struct ISampleGrabber' has virtual functions and accessible non-virtual destructor [-Werror=non-virtual-dtor] C:\OpenCV\s.3\sources\modules\videoio\src\cap_dshow.cpp:646:7: error: base class 'struct ISampleGrabberCB' has accessible non-virtual destructor [-Werror=non-virtual-dtor] class SampleGrabberCallback : public ISampleGrabberCB{ ^ cc1plus.exe: some warnings being treated as errors modules\videoio\CMakeFiles\opencv_videoio.dir\build.make:187: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dshow.cpp.obj' failed mingw32-make[2]: * [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_dshow.cpp.obj] Error 1 CMakeFiles\Makefile2:4506: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed mingw32-make[1]: [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2 makefile:148: recipe for target 'all' failed mingw32-make: ** [all] Error 2

but when i use opencv2.4, Cmake can built my library but when i want to link opencv to qt following error appear.

my error when i use OpenCV 2.4 in below image (picture link)

and my .pro file picture(picture link)