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On Ubuntu 16.04 trying to build OpenCV3.1.0 with the contrib module. I have a clean build with CUDA fully enabled (which is awesome!). I can get the python 3.x bindings to build without issue, but can not seem to get xfeatures2d bindings to be built.

I see that Python2 is unavailable, but am not concerned as I am trying to get bindings for Python 3. Otherwise, the config looks reasonable (I think?). Perhaps I am missing something pretty basic in the config?

CMAKE:

      cmake \
  -D CMAKE_BUILD_TYPE=RELEASE \
  -D CMAKE_INSTALL_PREFIX=/usr/local \
  -D WITH_TBB=ON \
  -D WITH_V4L=ON \
  -D WITH_QT=ON \
  -D WITH_OPENGL=ON \
  -D WITH_CUDA=ON \
  -D ENABLE_FAST_MATH=1 \
  -D CUDA_FAST_MATH=1 \
  -D CUDA_NVCC_FLAGS="-D_FORCE_INLINES" \
  -D WITH_CUBLAS=1 \
  -D OPENCV_EXTRAS_MODULES_PATH=../../opencv_contrib-3.1.0/modules \
  -D BUILD_TESTS=OFF \
  -D BUILD_PERF_TESTS=OFF \
  -D BUILD_OPENCV_PYTHON3=1 \
  -D PYTHON3_EXECUTABLE=$(which python3) \
  -D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
  -D PYTHON3_LIBRARIES=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
  -D PYTHON3_LIBRARY=/home/jlaura/anaconda3/lib/libpython3.5m.so ..

cv2.getBuildInformation()

    General configuration for OpenCV 3.1.0 =====================================
  Version control:               unknown

  Platform:
    Host:                        Linux 4.4.0-34-generic x86_64
    CMake:                       3.5.1
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/make
    Configuration:               RELEASE

  C/C++:
    Built as dynamic libs?:      YES
    C++ Compiler:                /usr/bin/g++-4.8  (ver 4.8.5)
    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 -ffast-math -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 -ffast-math -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/gcc-4.8
    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 -ffast-math -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 -ffast-math -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:          /home/jlaura/anaconda3/lib/libQtGui.so /home/jlaura/anaconda3/lib/libQtTest.so /home/jlaura/anaconda3/lib/libQtCore.so /home/jlaura/anaconda3/lib/libpng.so /home/jlaura/anaconda3/lib/libz.so /home/jlaura/anaconda3/lib/libtiff.so /usr/lib/x86_64-linux-gnu/libjasper.so /home/jlaura/anaconda3/lib/libjpeg.so v4l1 v4l2 avcodec-ffmpeg avformat-ffmpeg avutil-ffmpeg swscale-ffmpeg dl m pthread rt cudart nppc nppi npps cublas cufft -L/usr/local/cuda-7.5/lib64
    3rdparty dependencies:       libwebp IlmImf

  OpenCV ...