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2017-02-16 07:54:57 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 Building from the opencv-3.2.0-vc14.exe downloaded from the main OpenCV's site page. When building opencv_world there are unresolved externals for Window_QT.obj , all prefixed wit QT, same errors as at the beginning. Id I Cmake without opencv_world, it finishes without errors, and I can use the libraries. THANK YOU!!!! I would like to figure out building opencv_world.... All this with QT 5.6.2 TANK YOU again!
2017-02-16 06:48:26 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 I added the CMake output to my original post. As for the StackOverflow post, I couldn't understand the answer, but I did run the `moc -I"%QTDIR%\include" -I"%QTDIR%\include\QtCore" -I"%QTDIR%\include\QtGui" -omoc_window_QT.cpp window_QT.h` with no results. I've been scouring the web for solutions to this problem since Monday, and trying all kinds of stuff. Hours and hours without results. FRUSTRATING
2017-02-16 06:42:33 -0600	received badge	● Editor (source)
2017-02-16 01:34:16 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 It will take many comments to upload all of the output from CMake... :(
2017-02-16 01:33:01 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 FP16: Compiler support is available found IPP (ICV version): 9.0.1 [9.0.1] at: C:/D2/opencv/build/3rdparty/ippicv/ippicv_win Could not find OpenBLAS include. Turning OpenBLAS_FOUND off Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off Could NOT find Matlab (missing: MATLAB_MEX_SCRIPT MATLAB_INCLUDE_DIRS MATLAB_ROOT_DIR MATLAB_LIBRARIES MATLAB_LIBRARY_DIRS MATLAB_MEXEXT MATLAB_ARCH MATLAB_BIN) VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file Processing WORLD modules... module opencv_core... module opencv_flann... module opencv_imgproc... module opencv_ml... module opencv_photo... module opencv_video... module opencv_imgcodecs... module opencv_shape...
2017-02-16 01:31:56 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 I couldn't upload the file for the Cmake results ... I'll insert below in this comment. How do I include opencv_contrib? it's nut in the build list. If I disable opencv_world it completes the ALL_MAKE. All the unresolved link errors come from window_QT.obj!!
2017-02-16 01:17:54 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 Thanks for your suggestion. I just spent a couple of hours re-downloading Qt and remaking OCV with Qt 5.6.1 and the results are EXACTLY THE SAME as with Qt 5.8.0
2017-02-15 13:14:44 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 cmake outputs many files. Which ones should I post?
2017-02-15 11:04:52 -0600	commented answer	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 Dear LBerger: Thank you very much for your answer! I followed your instructions and in Visual Studio, and while building ALL_MAKE, there are 31 unresolved externals building opencv_world320d.lib, all of the out of window_QT.obj: `1>------ Build started: Project: opencv_world, Configuration: Debug x64 ------` 1> Creating library C:/D2/opencv/build/lib/Debug/opencv_world320d.lib and object C:/D2/opencv/build/lib/Debug/opencv_world320d.exp 1>window_QT.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __cdecl GuiReceiver::metaObject(void)const " (?metaObject@GuiReceiver@@UEBAPEBUQMetaObject@@XZ) 1>window_QT.obj : error LNK2001: unresolved external symbol "public: virtual void * __cdecl GuiReceiver::qt_metacast(char const *)" (?qt_metacast@GuiR
2017-02-14 03:30:09 -0600	asked a question	Building/Compiling OpenCV 3.2 with Qt on Visual Studio 2015 I'm trying to use Qt functionality (such as named window with CV_GUI_EXPANDED), developing on Visual Studio 2015 on Windows 10. I'm using the pre-built Windows libraries downloaded from the Sourceforge (opencv-3.2.0-vc14.exe) It seems to me that Qt is not included in that file, and that I need to rebuild the OpenCV libraries from source with Qt, but I am unable to find any documentation of how to do that on Visual Studio 2015 Many thanks! C/C++: Built as dynamic libs?: YES C++ Compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe (ver 19.0.24213.1) C++ flags (Release): /DWIN32 /D_WINDOWS /W4 /GR /EHa /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /wd4251 /wd4324 /wd4275 /wd4589 /MP8 /MD /O2 /Ob2 /DNDEBUG /Zi C++ flags (Debug): /DWIN32 /D_WINDOWS /W4 /GR /EHa /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /wd4251 /wd4324 /wd4275 /wd4589 /MP8 /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1 C Compiler: C:/Program Files (x86)/Microsoft Visual Studio 14.0/VC/bin/x86_amd64/cl.exe C flags (Release): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /MP8 /MD /O2 /Ob2 /DNDEBUG /Zi C flags (Debug): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /MP8 /D_DEBUG /MDd /Zi /Ob0 /Od /RTC1 Linker flags (Release): /machine:x64 /INCREMENTAL:NO /debug Linker flags (Debug): /machine:x64 /debug /INCREMENTAL ccache: NO Precompiled headers: NO Extra dependencies: vfw32 comctl32 gdi32 ole32 setupapi ws2_32 Qt5::Core Qt5::Gui Qt5::Widgets Qt5::Test Qt5::Concurrent 3rdparty dependencies: zlib libjpeg libwebp libpng libtiff libjasper IlmImf OpenCV modules: To be built: core flann imgproc ml photo video imgcodecs shape videoio highgui objdetect superres features2d calib3d stitching videostab world ts Disabled: - Disabled by dependency: - Unavailable: cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 viz Windows RT support: NO GUI: QT 5.x: YES (ver 5.6.1) QT OpenGL support: NO OpenGL support: NO VTK support: NO Media I/O: ZLib: build (ver 1.2.8) JPEG: build (ver 90) WEBP: build (ver 0.3.1) PNG: build (ver 1.6.24) TIFF: build (ver 42 - 4.0.2) JPEG 2000: build (ver 1.900.1) OpenEXR: build (ver 1.7.1) GDAL: NO GDCM: NO Video I/O: Video for Windows: YES DC1394 1.x: NO DC1394 2.x: NO FFMPEG: YES (prebuilt binaries) avcodec: YES (ver 57.64.101) avformat: YES (ver 57.56.100) avutil: YES (ver 55.34.100) swscale: YES (ver 4.2.100) avresample: YES (ver 3.1.0) GStreamer: NO OpenNI: NO OpenNI PrimeSensor Modules: NO OpenNI2: NO PvAPI: NO GigEVisionSDK: NO DirectShow: YES Media Foundation: NO XIMEA: NO Intel PerC: NO Parallel framework: Concurrency Other third-party libraries: Use IPP: 9.0.1 [9.0.1] at: C:/D2/opencv/build/3rdparty/ippicv/ippicv_win Use IPP Async: NO Use Lapack: NO Use Eigen: NO Use Cuda: NO Use OpenCL: YES Use OpenVX: NO Use custom ... (more)