ubuntu18 编译 opencv3.4.5（cuda版本）

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cmake命令参数为：

cmake -D CMAKE_BUILD_TYPE=RELEASE \
    -D CMAKE_CXX_FLAGS="-std=c++11" \
    -D CUDA_NVCC_FLAGS=--expt-relaxed-constexpr \
    -D CMAKE_INSTALL_PREFIX=/usr/local \
    -D WITH_CUDA=ON \
    -D ENABLE_FAST_MATH=1 \
    -D CUDA_FAST_MATH=1 \
    -D WITH_CUBLAS=1 \
    -D INSTALL_PYTHON_EXAMPLES=ON \
    -D BUILD_opencv_python2=OFF \
    -D BUILD_opencv_python3=ON \
    -D PYTHON_EXECUTABLE=~/.virtualenvs/cv/bin/python \
    -D PYTHON_PACKAGES_PATH=/home/allen/.virtualenvs/cv/lib/python3.6/site-packages \
    -D PYTHON_LIBRARY=$(python3.6 -c "from distutils.sysconfig import get_config_var;from os.path import dirname,join ; print(join(dirname(get_config_var('LIBPC')),get_config_var('LDLIBRARY')))") \
    -D BUILD_EXAMPLES=ON ..

参照例子一；
参照例子二；
参照例子三
编译错误This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options. #error This file requires compiler and library support \: https://github.com/BVLC/caffe/issues/6358#issuecomment-383446222
编译错误/opencv-3.4.5/modules/core/include/opencv2/core/cuda/vec_math.hpp(203): error: calling a constexpr __host__ function("abs") from a __device__ function("abs") is not allowed. The experimental flag '--expt-relaxed-constexpr' can be used to allow this.: https://github.com/opencv/opencv/issues/8704#issuecomment-393738317

来源：oschina

链接：https://my.oschina.net/zhweizhwei/blog/3146034

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cuda

cmake

python

OpenCV

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