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Hi, I have this problem. I use cerr << getBuildInformation() << endl, result: General configuration for OpenCV 3.1.0 ===================================== Version control: unknown

Platform: Host: Linux 3.19.0-47-generic x86_64 CMake: 2.8.12.2 CMake generator: Unix Makefiles CMake build tool: /usr/bin/make Configuration: RELEASE

C/C++: Built as dynamic libs?: YES C++ Compiler: /usr/bin/c++ (ver 4.8.4) C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG C Compiler: /usr/bin/cc C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wno-narrowing -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG Linker flags (Release):
Linker flags (Debug):
Precompiled headers: YES Extra dependencies: Qt5::Core Qt5::Gui Qt5::Widgets Qt5::Test Qt5::Concurrent Qt5::OpenGL /usr/lib/x86_64-linux-gnu/libpng.so /usr/lib/x86_64-linux-gnu/libz.so /usr/lib/x86_64-linux-gnu/libtiff.so /usr/lib/x86_64-linux-gnu/libjasper.so /usr/lib/x86_64-linux-gnu/libjpeg.so /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so dc1394 avcodec avformat avutil swscale dl m pthread rt /usr/lib/x86_64-linux-gnu/libGLU.so /usr/lib/x86_64-linux-gnu/libGL.so /usr/lib/x86_64-linux-gnu/libSM.so /usr/lib/x86_64-linux-gnu/libICE.so /usr/lib/x86_64-linux-gnu/libX11.so /usr/lib/x86_64-linux-gnu/libXext.so 3rdparty dependencies: libwebp

OpenCV modules: To be built: core flann imgproc ml photo video imgcodecs shape videoio highgui objdetect superres ts features2d calib3d stitching videostab Disabled: world Disabled by dependency: - Unavailable: cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev java python2 python3 viz

GUI: QT 5.x: YES (ver 5.2.1) QT OpenGL support: YES (Qt5::OpenGL 5.2.1) OpenGL support: YES (/usr/lib/x86_64-linux-gnu/libGLU.so /usr/lib/x86_64-linux-gnu/libGL.so /usr/lib/x86_64-linux-gnu/libSM.so /usr/lib/x86_64-linux-gnu/libICE.so /usr/lib/x86_64-linux-gnu/libX11.so /usr/lib/x86_64-linux-gnu/libXext.so) VTK support: NO

Media I/O: ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.8) JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 62) WEBP: build (ver 0.3.1) PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.50) TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver ) JPEG 2000: /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1) OpenEXR: /usr/lib/x86_64-linux-gnu/libImath.so /usr/lib/x86_64-linux-gnu/libIlmImf.so /usr/lib/x86_64-linux-gnu/libIex.so /usr/lib/x86_64-linux-gnu/libHalf.so /usr/lib/x86_64-linux-gnu/libIlmThread.so (ver Unknown) GDAL: NO

Video I/O: DC1394 1.x: NO DC1394 2.x: YES (ver 2.2.1) FFMPEG: YES codec: YES (ver 54.35.0) format: YES (ver 54.20.4) util: YES (ver 52.3.0) swscale: YES (ver 2.1.1) resample: NO gentoo-style: YES GStreamer: NO OpenNI: NO OpenNI PrimeSensor Modules: NO OpenNI2: NO PvAPI: NO GigEVisionSDK: NO UniCap: NO UniCap ucil: NO V4L/V4L2: NO/NO XIMEA: NO Xine: NO gPhoto2: NO

Parallel framework: pthreads

Other third-party libraries: Use IPP: 9.0.1 [9.0.1] at: /usr/local/opencv-3.1.0/3rdparty/ippicv/unpack/ippicv_lnx Use IPP Async: NO Use VA: NO Use Intel VA-API/OpenCL: NO Use Eigen: NO Use Cuda: NO Use OpenCL: YES Use custom HAL: NO

OpenCL: Version: dynamic Include path: /usr/local/opencv-3.1.0/3rdparty/include/opencl/1.2 Use AMDFFT: NO Use AMDBLAS: NO

Python 2: Interpreter: /usr/bin/python2.7 (ver 2.7.6)

Python 3: Interpreter: /usr/bin/python3.4 (ver 3.4.3)

Python (for build): /usr/bin/python2.7

Java: ant: NO JNI: NO Java wrappers: NO Java tests: NO

Matlab: Matlab not found or implicitly disabled

Documentation: Doxygen: NO PlantUML: NO

Tests and samples: Tests: YES Performance tests: YES C/C++ Examples: YES

Install path: /usr/local

cvconfig.h is in: /usr/local/opencv-3.1.0/build

Thanks!