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OS: ArchLinux - [Build Error] undefined references to opencv libraries #4173

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acxz opened this issue Oct 26, 2019 · 15 comments
Closed

OS: ArchLinux - [Build Error] undefined references to opencv libraries #4173

acxz opened this issue Oct 26, 2019 · 15 comments
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Solved The problem is solved using the correct settings

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@acxz
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acxz commented Oct 26, 2019

Hello guys, I'm back!
So I am currently trying to build darknet with CUDA, and I ran across some issues

[ 49%] Built target dark
[ 51%] Built target uselib
[ 51%] Linking CXX executable darknet
/usr/bin/ld: /usr/lib/libopencv_dnn.so.4.1.2: undefined reference to `std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::basic_ostringstream()@GLIBCXX_3.4.26'
/usr/bin/ld: /usr/lib/libopencv_gapi.so.4.1.2: undefined reference to `std::logic_error::logic_error(std::logic_error&&)@GLIBCXX_3.4.26'
/usr/bin/ld: /usr/lib/libopencv_gapi.so.4.1.2: undefined reference to `std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >::basic_stringstream()@GLIBCXX_3.4.26'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/darknet.dir/build.make:1323: darknet] Error 1
make[1]: *** [CMakeFiles/Makefile2:142: CMakeFiles/darknet.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

I was able to get around this issue by adding the following flag, courtesy of @dferio (https://aur.archlinux.org/packages/darknet-alexeyab-git#comment-712321).
-D_GLIBCXX_USE_CXX11_ABI=0 on line 142 of the CMakeLists.tx

However, adding that flag I now get the following undefined errors when trying to link the libraries:

[ 50%] Linking CXX executable uselib
/usr/bin/ld: CMakeFiles/uselib.dir/src/yolo_console_dll.cpp.o: in function `draw_boxes(cv::Mat, std::vector<bbox_t, std::allocator<bbox_t> >, std::vector<std::string, std::allocator<std::string> >, int, int)':
yolo_console_dll.cpp:(.text+0x461): undefined reference to `cv::getTextSize(std::string const&, int, double, int, int*)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x633): undefined reference to `cv::getTextSize(std::string const&, int, double, int, int*)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x960): undefined reference to `cv::putText(cv::_InputOutputArray const&, std::string const&, cv::Point_<int>, int, double, cv::Scalar_<double>, int, int, bool)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0xa8e): undefined reference to `cv::putText(cv::_InputOutputArray const&, std::string const&, cv::Point_<int>, int, double, cv::Scalar_<double>, int, int, bool)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0xc76): undefined reference to `cv::putText(cv::_InputOutputArray const&, std::string const&, cv::Point_<int>, int, double, cv::Scalar_<double>, int, int, bool)'
/usr/bin/ld: CMakeFiles/uselib.dir/src/yolo_console_dll.cpp.o: in function `main':
yolo_console_dll.cpp:(.text+0x2d05): undefined reference to `cv::VideoCapture::open(std::string const&, int)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x3493): undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x358a): undefined reference to `cv::destroyWindow(std::string const&)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x384d): undefined reference to `cv::imread(std::string const&, int)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x3971): undefined reference to `cv::imread(std::string const&, int)'
/usr/bin/ld: yolo_console_dll.cpp:(.text+0x3b4e): undefined reference to `cv::imshow(std::string const&, cv::_InputArray const&)'
/usr/bin/ld: libdark.so: undefined reference to `cv::namedWindow(std::string const&, int)'
/usr/bin/ld: libdark.so: undefined reference to `cv::moveWindow(std::string const&, int, int)'
/usr/bin/ld: libdark.so: undefined reference to `cv::setWindowProperty(std::string const&, int, double)'
/usr/bin/ld: libdark.so: undefined reference to `cv::VideoWriter::VideoWriter(std::string const&, int, double, cv::Size_<int>, bool)'
/usr/bin/ld: libdark.so: undefined reference to `cv::error(int, std::string const&, char const*, char const*, int)'
/usr/bin/ld: libdark.so: undefined reference to `cv::VideoCapture::VideoCapture(std::string const&, int)'
/usr/bin/ld: libdark.so: undefined reference to `cv::resizeWindow(std::string const&, int, int)'
/usr/bin/ld: libdark.so: undefined reference to `cv::imencode(std::string const&, cv::_InputArray const&, std::vector<unsigned char, std::allocator<unsigned char> >&, std::vector<int, std::allocator<int> > const&)'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/uselib.dir/build.make:138: uselib] Error 1
make[1]: *** [CMakeFiles/Makefile2:78: CMakeFiles/uselib.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

I have added the relevant opencv_components such as opencv_videoio, etc to `${OpenCV_LINKED_COMPONENTS} in the CMakeLists.txt (printed the list of linked opencv libraries as well to confirm) but I still get the undefined errors.

It would be much appreciated if you guys can look into this issue, it is preventing me from using darknet with CUDA.

OS: ArchLinux
darknet: master branch as of posting
OpenCV: 4.1.2
gcc: 9.2
@scipioni
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scipioni commented Nov 2, 2019 •
edited
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In arch linux with latest CUDA (10.1) I solved compiling a custom opencv in a python virtual env

create link /usr/local/cuda if not present

sudo ln -s /opt/cuda /usr/local/cuda

create and activate virtualenv

python3 -mvenv venv
echo "export LD_LIBRARY_PATH=\${VIRTUAL_ENV}/lib" >> venv/bin/activate
source venv/bin/activate

build and install opencv4

#!/bin/bash

GPU=$(nvidia-smi --query-gpu=gpu_name --format=csv,noheader)

CUDA="-D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda -D WITH_CUDA=ON -D WITH_CUDNN=ON -D CUDA_GENERATION=Auto"

if [ "$GPU" = "GeForce GTX 750 Ti" ]; then
  CUDA="$CUDA -D CUDA_ARCH_BIN=5.1"
fi

if [ "$GPU" = "GGeForce GTX 1070 Ti" ]; then
  CUDA="$CUDA -D CUDA_ARCH_BIN=6.1"
fi
 	
if [ ! -d opencv ]; then
    git clone https://github.com/opencv/opencv.git opencv
fi

if [ ! -d opencv_contrib ]; then
	git clone https://github.com/opencv/opencv_contrib.git opencv_contrib
fi

mkdir -p opencv/release
cd opencv/release

JOBS=$(getconf _NPROCESSORS_ONLN)
JOBS=$(($JOBS - 1)) 

# with CUDA 10 disable cudacodec
# -D BUILD_opencv_cudacodec=OFF

cmake \
	-D CMAKE_C_COMPILER="/usr/bin/cc-8" \
	-D CMAKE_CXX_COMPILER="/usr/bin/c++-8" \
	${CUDA} \
	-D CMAKE_BUILD_TYPE=RELEASE \
	-D CMAKE_INSTALL_PREFIX=${VIRTUAL_ENV} \
	-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
	-D WITH_LIBV4L=ON \
	-D CUDA_NVCC_FLAGS="-D_FORCE_INLINES" \
	-D BUILD_opencv_cudacodec=ON \
	-D BUILD_opencv_cudafilters=ON \
	-D BUILD_opencv_cudacodec=OFF \
	-D BUILD_opencv_dnn=ON \
	-D BUILD_opencv_python3=ON \
	-D BUILD_opencv_superres=ON \
	-D WITH_GSTREAMER=ON \
	-D ENABLE_CXX11=ON \
	-D WITH_LAPACK=ON \
	-D WITH_PROTOBUF=ON \
	-D WITH_OPENCL=ON \
	-D WITH_FFMPEG=ON \
	-D BUILD_IPP_IW=OFF \
	-D ENABLE_PRECOMPILED_HEADERS=OFF \
	-D INSTALL_PYTHON_EXAMPLES=OFF \
	-D INSTALL_C_EXAMPLES=OFF \
	-D BUILD_EXAMPLES=OFF \
	-D BUILD_opencv_python2=OFF \
	-D BUILD_opencv_java=OFF \
	-D WITH_VTK=OFF \
	-D BUILD_opencv_apps=OFF \
	-D BUILD_PERF_TESTS=OFF \
	-D BUILD_TESTS=OFF \
	-D WITH_OPENEXR=OFF \
	-D BUILD_opencv_stitching=OFF \
	-D CV_TRACE=OFF \
	.. && \
make -j${JOBS} && \
make install/strip

build and install darknet

#!/bin/sh

if [ ! -d darknet ]; then
	git clone https://github.com/AlexeyAB/darknet.git
fi
	
mkdir -p darknet/release
cd darknet/release

JOBS=$(getconf _NPROCESSORS_ONLN)
JOBS=$(($JOBS - 1)) 

cmake \
	-DOpenCV_DIR=${VIRTUAL_ENV}/lib/cmake/opencv4/ \
	-DINSTALL_BIN_DIR=${VIRTUAL_ENV}/bin \
	-DINSTALL_LIB_DIR=${VIRTUAL_ENV}/lib \
	-DINSTALL_INCLUDE_DIR=${VIRTUAL_ENV}/include/darknet \
	-DINSTALL_CMAKE_DIR=${VIRTUAL_ENV}/share/darknet \
	.. && \
make -j$JOBS && \
make install/strip

@acxz
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acxz commented Nov 2, 2019

Thank you for your work around, @scipioni, but I would like to get darknet to install using the system wide opencv.

@vfbsilva
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@acxz same issue here did you have any progress?

@acxz
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acxz commented Nov 19, 2019

Sadly no, the end of the semester is always a crunch for me, I prob won't revisit this until the beginning of next semester.

@vfbsilva
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@acxz I need this for this semester :/

@acxz acxz mentioned this issue Feb 3, 2020
Closed
@vfbsilva
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@scipioni I would like to try your work around. How do I find out the cuda version for a 1050TI?

@scipioni
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try this

#!/bin/bash

#GPU=$(nvidia-smi --query-gpu=gpu_name --format=csv,noheader)

CUDA="-D CUDA_TOOLKIT_ROOT_DIR=/usr/local/cuda -D WITH_CUDA=ON -D WITH_CUDNN=ON -D CUDA_GENERATION=Auto"
 	
if [ ! -d opencv ]; then
    git clone https://github.com/opencv/opencv.git opencv
fi

if [ ! -d opencv_contrib ]; then
	git clone https://github.com/opencv/opencv_contrib.git opencv_contrib
fi

rm -fR opencv/release-small
mkdir -p opencv/release-small
cd opencv/release-small

JOBS=$(getconf _NPROCESSORS_ONLN)
JOBS=$(($JOBS - 1)) 

cmake \
	-D CMAKE_C_COMPILER="/usr/bin/cc-8" \
	-D CMAKE_CXX_COMPILER="/usr/bin/c++-8" \
	${CUDA} \
	-D CUDA_NVCC_FLAGS="-D_FORCE_INLINES" \
	-D CMAKE_BUILD_TYPE=RELEASE \
	-D BUILD_LIST=core,improc,videoio,dnn,python3,cudev,dnn_objdetect,highgui,video,ml \
	-D CMAKE_INSTALL_PREFIX=${VIRTUAL_ENV} \
	-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
	-D WITH_TBB=ON \
	-D CMAKE_DISABLE_FIND_PACKAGE_TBB=ON \
	-D ENABLE_PRECOMPILED_HEADERS=OFF \
	-D BUILD_PERF_TESTS=OFF \
	-D CV_TRACE=OFF \
	-D WITH_OPENEXR=OFF \
	.. && \
make -j${JOBS} && \
make install/strip

@acxz acxz changed the title {Build Error] undefined references to opencv libraries [Build Error] undefined references to opencv libraries Mar 20, 2020
@vfbsilva
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vfbsilva commented Mar 20, 2020 •
edited
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@scipioni cryptic error message here:

`Cloning into 'opencv'...
Cloning into 'opencv'...
Cloning into 'opencv'...
Cloning into 'opencv_contrib'...
-- The CXX compiler identification is GNU 8.3.0
-- The C compiler identification is GNU 8.3.0
-- Check for working CXX compiler: /usr/bin/c++-8
-- Check for working CXX compiler: /usr/bin/c++-8 -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Check for working C compiler: /usr/bin/cc-8
-- Check for working C compiler: /usr/bin/cc-8 -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Detected processor: x86_64
-- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.17", minimum required is "2.7") 
-- Found PythonLibs: /lib64/libpython2.7.so (found suitable exact version "2.7.17") 
-- Found PythonInterp: /home/vfbsilva/Source/venv/bin/python3 (found suitable version "3.8.1", minimum required is "3.2") 
-- Found PythonLibs: /lib64/libpython3.8.so (found suitable exact version "3.8.1") 
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'numpy'
-- Looking for ccache - not found
-- Performing Test HAVE_CXX_FSIGNED_CHAR
-- Performing Test HAVE_CXX_FSIGNED_CHAR - Success
-- Performing Test HAVE_C_FSIGNED_CHAR
-- Performing Test HAVE_C_FSIGNED_CHAR - Success
-- Performing Test HAVE_CXX_W
-- Performing Test HAVE_CXX_W - Success
-- Performing Test HAVE_C_W
-- Performing Test HAVE_C_W - Success
-- Performing Test HAVE_CXX_WALL
-- Performing Test HAVE_CXX_WALL - Success
-- Performing Test HAVE_C_WALL
-- Performing Test HAVE_C_WALL - Success
-- Performing Test HAVE_CXX_WERROR_RETURN_TYPE
-- Performing Test HAVE_CXX_WERROR_RETURN_TYPE - Success
-- Performing Test HAVE_C_WERROR_RETURN_TYPE
-- Performing Test HAVE_C_WERROR_RETURN_TYPE - Success
-- Performing Test HAVE_CXX_WERROR_NON_VIRTUAL_DTOR
-- Performing Test HAVE_CXX_WERROR_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_C_WERROR_NON_VIRTUAL_DTOR
-- Performing Test HAVE_C_WERROR_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_CXX_WERROR_ADDRESS
-- Performing Test HAVE_CXX_WERROR_ADDRESS - Success
-- Performing Test HAVE_C_WERROR_ADDRESS
-- Performing Test HAVE_C_WERROR_ADDRESS - Success
-- Performing Test HAVE_CXX_WERROR_SEQUENCE_POINT
-- Performing Test HAVE_CXX_WERROR_SEQUENCE_POINT - Success
-- Performing Test HAVE_C_WERROR_SEQUENCE_POINT
-- Performing Test HAVE_C_WERROR_SEQUENCE_POINT - Success
-- Performing Test HAVE_CXX_WFORMAT
-- Performing Test HAVE_CXX_WFORMAT - Success
-- Performing Test HAVE_C_WFORMAT
-- Performing Test HAVE_C_WFORMAT - Success
-- Performing Test HAVE_CXX_WERROR_FORMAT_SECURITY
-- Performing Test HAVE_CXX_WERROR_FORMAT_SECURITY - Success
-- Performing Test HAVE_C_WERROR_FORMAT_SECURITY
-- Performing Test HAVE_C_WERROR_FORMAT_SECURITY - Success
-- Performing Test HAVE_CXX_WMISSING_DECLARATIONS
-- Performing Test HAVE_CXX_WMISSING_DECLARATIONS - Success
-- Performing Test HAVE_C_WMISSING_DECLARATIONS
-- Performing Test HAVE_C_WMISSING_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES
-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES - Failed
-- Performing Test HAVE_C_WMISSING_PROTOTYPES
-- Performing Test HAVE_C_WMISSING_PROTOTYPES - Success
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES - Failed
-- Performing Test HAVE_C_WSTRICT_PROTOTYPES
-- Performing Test HAVE_C_WSTRICT_PROTOTYPES - Success
-- Performing Test HAVE_CXX_WUNDEF
-- Performing Test HAVE_CXX_WUNDEF - Success
-- Performing Test HAVE_C_WUNDEF
-- Performing Test HAVE_C_WUNDEF - Success
-- Performing Test HAVE_CXX_WINIT_SELF
-- Performing Test HAVE_CXX_WINIT_SELF - Success
-- Performing Test HAVE_C_WINIT_SELF
-- Performing Test HAVE_C_WINIT_SELF - Success
-- Performing Test HAVE_CXX_WPOINTER_ARITH
-- Performing Test HAVE_CXX_WPOINTER_ARITH - Success
-- Performing Test HAVE_C_WPOINTER_ARITH
-- Performing Test HAVE_C_WPOINTER_ARITH - Success
-- Performing Test HAVE_CXX_WSHADOW
-- Performing Test HAVE_CXX_WSHADOW - Success
-- Performing Test HAVE_C_WSHADOW
-- Performing Test HAVE_C_WSHADOW - Success
-- Performing Test HAVE_CXX_WSIGN_PROMO
-- Performing Test HAVE_CXX_WSIGN_PROMO - Success
-- Performing Test HAVE_C_WSIGN_PROMO
-- Performing Test HAVE_C_WSIGN_PROMO - Failed
-- Performing Test HAVE_CXX_WUNINITIALIZED
-- Performing Test HAVE_CXX_WUNINITIALIZED - Success
-- Performing Test HAVE_C_WUNINITIALIZED
-- Performing Test HAVE_C_WUNINITIALIZED - Success
-- Performing Test HAVE_CXX_WSUGGEST_OVERRIDE
-- Performing Test HAVE_CXX_WSUGGEST_OVERRIDE - Success
-- Performing Test HAVE_C_WSUGGEST_OVERRIDE
-- Performing Test HAVE_C_WSUGGEST_OVERRIDE - Failed
-- Performing Test HAVE_CXX_WNO_DELETE_NON_VIRTUAL_DTOR
-- Performing Test HAVE_CXX_WNO_DELETE_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR - Failed
-- Performing Test HAVE_CXX_WNO_UNNAMED_TYPE_TEMPLATE_ARGS
-- Performing Test HAVE_CXX_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
-- Performing Test HAVE_C_WNO_UNNAMED_TYPE_TEMPLATE_ARGS
-- Performing Test HAVE_C_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
-- Performing Test HAVE_CXX_WNO_COMMENT
-- Performing Test HAVE_CXX_WNO_COMMENT - Success
-- Performing Test HAVE_C_WNO_COMMENT
-- Performing Test HAVE_C_WNO_COMMENT - Success
-- Performing Test HAVE_CXX_WIMPLICIT_FALLTHROUGH_3
-- Performing Test HAVE_CXX_WIMPLICIT_FALLTHROUGH_3 - Success
-- Performing Test HAVE_C_WIMPLICIT_FALLTHROUGH_3
-- Performing Test HAVE_C_WIMPLICIT_FALLTHROUGH_3 - Success
-- Performing Test HAVE_CXX_WNO_STRICT_OVERFLOW
-- Performing Test HAVE_CXX_WNO_STRICT_OVERFLOW - Success
-- Performing Test HAVE_C_WNO_STRICT_OVERFLOW
-- Performing Test HAVE_C_WNO_STRICT_OVERFLOW - Success
-- Performing Test HAVE_CXX_FDIAGNOSTICS_SHOW_OPTION
-- Performing Test HAVE_CXX_FDIAGNOSTICS_SHOW_OPTION - Success
-- Performing Test HAVE_C_FDIAGNOSTICS_SHOW_OPTION
-- Performing Test HAVE_C_FDIAGNOSTICS_SHOW_OPTION - Success
-- Performing Test HAVE_CXX_WNO_LONG_LONG
-- Performing Test HAVE_CXX_WNO_LONG_LONG - Success
-- Performing Test HAVE_C_WNO_LONG_LONG
-- Performing Test HAVE_C_WNO_LONG_LONG - Success
-- Performing Test HAVE_CXX_PTHREAD
-- Performing Test HAVE_CXX_PTHREAD - Success
-- Performing Test HAVE_C_PTHREAD
-- Performing Test HAVE_C_PTHREAD - Success
-- Performing Test HAVE_CXX_FOMIT_FRAME_POINTER
-- Performing Test HAVE_CXX_FOMIT_FRAME_POINTER - Success
-- Performing Test HAVE_C_FOMIT_FRAME_POINTER
-- Performing Test HAVE_C_FOMIT_FRAME_POINTER - Success
-- Performing Test HAVE_CXX_FFUNCTION_SECTIONS
-- Performing Test HAVE_CXX_FFUNCTION_SECTIONS - Success
-- Performing Test HAVE_C_FFUNCTION_SECTIONS
-- Performing Test HAVE_C_FFUNCTION_SECTIONS - Success
-- Performing Test HAVE_CXX_FDATA_SECTIONS
-- Performing Test HAVE_CXX_FDATA_SECTIONS - Success
-- Performing Test HAVE_C_FDATA_SECTIONS
-- Performing Test HAVE_C_FDATA_SECTIONS - Success
-- Performing Test HAVE_CXX_MSSE (check file: cmake/checks/cpu_sse.cpp)
-- Performing Test HAVE_CXX_MSSE - Success
-- Performing Test HAVE_CXX_MSSE2 (check file: cmake/checks/cpu_sse2.cpp)
-- Performing Test HAVE_CXX_MSSE2 - Success
-- Performing Test HAVE_CXX_MSSE3 (check file: cmake/checks/cpu_sse3.cpp)
-- Performing Test HAVE_CXX_MSSE3 - Success
-- Performing Test HAVE_CXX_MSSSE3 (check file: cmake/checks/cpu_ssse3.cpp)
-- Performing Test HAVE_CXX_MSSSE3 - Success
-- Performing Test HAVE_CXX_MSSE4_1 (check file: cmake/checks/cpu_sse41.cpp)
-- Performing Test HAVE_CXX_MSSE4_1 - Success
-- Performing Test HAVE_CXX_MPOPCNT (check file: cmake/checks/cpu_popcnt.cpp)
-- Performing Test HAVE_CXX_MPOPCNT - Success
-- Performing Test HAVE_CXX_MSSE4_2 (check file: cmake/checks/cpu_sse42.cpp)
-- Performing Test HAVE_CXX_MSSE4_2 - Success
-- Performing Test HAVE_CXX_MF16C (check file: cmake/checks/cpu_fp16.cpp)
-- Performing Test HAVE_CXX_MF16C - Success
-- Performing Test HAVE_CXX_MFMA
-- Performing Test HAVE_CXX_MFMA - Success
-- Performing Test HAVE_CXX_MAVX (check file: cmake/checks/cpu_avx.cpp)
-- Performing Test HAVE_CXX_MAVX - Success
-- Performing Test HAVE_CXX_MAVX2 (check file: cmake/checks/cpu_avx2.cpp)
-- Performing Test HAVE_CXX_MAVX2 - Success
-- Performing Test HAVE_CXX_MAVX512F (check file: cmake/checks/cpu_avx512.cpp)
-- Performing Test HAVE_CXX_MAVX512F - Success
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD (check file: cmake/checks/cpu_avx512common.cpp)
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD - Success
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD_MAVX512VL_MAVX512BW_MAVX512DQ (check file: cmake/checks/cpu_avx512skx.cpp)
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD_MAVX512VL_MAVX512BW_MAVX512DQ - Success
-- Performing Test HAVE_CPU_BASELINE_FLAGS
-- Performing Test HAVE_CPU_BASELINE_FLAGS - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_1
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_1 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_2
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_2 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_FP16
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_FP16 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX2
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX2 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX512_SKX
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX512_SKX - Success
-- Performing Test HAVE_CXX_FVISIBILITY_HIDDEN
-- Performing Test HAVE_CXX_FVISIBILITY_HIDDEN - Success
-- Performing Test HAVE_C_FVISIBILITY_HIDDEN
-- Performing Test HAVE_C_FVISIBILITY_HIDDEN - Success
-- Performing Test HAVE_CXX_FVISIBILITY_INLINES_HIDDEN
-- Performing Test HAVE_CXX_FVISIBILITY_INLINES_HIDDEN - Success
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN - Failed
-- Performing Test HAVE_LINK_AS_NEEDED
-- Performing Test HAVE_LINK_AS_NEEDED - Success
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for posix_memalign
-- Looking for posix_memalign - found
-- Looking for malloc.h
-- Looking for malloc.h - found
-- Looking for memalign
-- Looking for memalign - found
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Found ZLIB: /lib64/libz.so (found suitable version "1.2.11", minimum required is "1.2.3") 
-- Found JPEG: /lib64/libjpeg.so (found version "80") 
-- Found TIFF: /lib64/libtiff.so (found version "4.1.0") 
-- Found WebP: /lib64/libwebp.so  
-- Found Jasper: /lib64/libjasper.so (found version "2.0.16") 
-- Found ZLIB: /lib64/libz.so (found version "1.2.11") 
-- Found PNG: /lib64/libpng.so (found version "1.6.37") 
-- Looking for /usr/include/libpng/png.h
-- Looking for /usr/include/libpng/png.h - not found
-- Checking for module 'gtk+-3.0'
--   Found gtk+-3.0, version 3.24.14
-- Checking for module 'gthread-2.0'
--   Found gthread-2.0, version 2.64.0
-- Found TBB (env): /lib64/libtbb.so
-- IPPICV: Download: ippicv_2020_lnx_intel64_20191018_general.tgz
-- found Intel IPP (ICV version): 2020.0.0 [2020.0.0 Gold]
-- at: /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/icv
-- found Intel IPP Integration Wrappers sources: 2020.0.0
-- at: /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/iw
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found CUDNN: /lib64/libcudnn.so (found suitable version "7.6.5", minimum required is "7.5") 
-- CUDA detected: 10.2
-- CUDA NVCC target flags: -D_FORCE_INLINES;-gencode;arch=compute_61,code=sm_61;-D_FORCE_INLINES
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_BLAS_LIBRARY) 
-- Looking for sgemm_
-- Looking for sgemm_ - not found
-- Looking for sgemm_
-- Looking for sgemm_ - found
-- Found BLAS: /lib64/libblas.so  
-- Looking for cheev_
-- Looking for cheev_ - not found
-- Looking for cheev_
-- Looking for cheev_ - found
-- A library with LAPACK API found.
-- LAPACK(LAPACK/Generic): LAPACK_LIBRARIES: /lib64/liblapack.so;/lib64/libblas.so
-- LAPACK(LAPACK/Generic): Support is enabled.
-- Performing Test HAVE_CXX_WNO_DEPRECATED
-- Performing Test HAVE_CXX_WNO_DEPRECATED - Success
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES - Failed
-- Performing Test HAVE_CXX_WNO_MISSING_DECLARATIONS
-- Performing Test HAVE_CXX_WNO_MISSING_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WNO_SHADOW
-- Performing Test HAVE_CXX_WNO_SHADOW - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_PARAMETER
-- Performing Test HAVE_CXX_WNO_UNUSED_PARAMETER - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS
-- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS - Success
-- Performing Test HAVE_CXX_WNO_SIGN_COMPARE
-- Performing Test HAVE_CXX_WNO_SIGN_COMPARE - Success
-- Performing Test HAVE_CXX_WNO_SIGN_PROMO
-- Performing Test HAVE_CXX_WNO_SIGN_PROMO - Success
-- Performing Test HAVE_CXX_WNO_UNDEF
-- Performing Test HAVE_CXX_WNO_UNDEF - Success
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE - Failed
-- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS
-- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS - Success
-- Performing Test HAVE_CXX_WNO_EXTRA
-- Performing Test HAVE_CXX_WNO_EXTRA - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION
-- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE - Success
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32 - Failed
-- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF
-- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF - Success
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH - Failed
-- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE
-- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE - Success
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE - Failed
-- Performing Test HAVE_CXX_WNO_IMPLICIT_FALLTHROUGH
-- Performing Test HAVE_CXX_WNO_IMPLICIT_FALLTHROUGH - Success
-- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS
-- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS - Success
-- Performing Test HAVE_CXX_WNO_CLASS_MEMACCESS
-- Performing Test HAVE_CXX_WNO_CLASS_MEMACCESS - Success
-- Found apache ant: /bin/ant (1.10.7)
-- Found JNI: /usr/lib/jvm/default/jre/lib/amd64/libjawt.so  
-- VTK support is disabled. Compilation of the sample code has failed.
-- Performing Test HAVE_C_WNO_UNUSED_VARIABLE
-- Performing Test HAVE_C_WNO_UNUSED_VARIABLE - Success
-- Performing Test HAVE_C_WNO_SHADOW
-- Performing Test HAVE_C_WNO_SHADOW - Success
-- ADE: Download: v0.1.1f.zip
-- OpenCV Python: during development append to PYTHONPATH: /home/vfbsilva/Source/opencv/release-small/python_loader
-- Performing Test HAVE_CXX_WNO_STRICT_ALIASING
-- Performing Test HAVE_CXX_WNO_STRICT_ALIASING - Success
-- Checking for modules 'libavcodec;libavformat;libavutil;libswscale'
--   Found libavcodec, version 58.54.100
--   Found libavformat, version 58.29.100
--   Found libavutil, version 56.31.100
--   Found libswscale, version 5.5.100
-- Checking for module 'libavresample'
--   Package 'libavresample', required by 'virtual:world', not found
-- Checking for module 'gstreamer-base-1.0'
--   Found gstreamer-base-1.0, version 1.16.2
-- Checking for module 'gstreamer-app-1.0'
--   Found gstreamer-app-1.0, version 1.16.2
-- Checking for module 'gstreamer-riff-1.0'
--   Found gstreamer-riff-1.0, version 1.16.2
-- Checking for module 'gstreamer-pbutils-1.0'
--   Found gstreamer-pbutils-1.0, version 1.16.2
-- Checking for module 'libdc1394-2'
--   Found libdc1394-2, version 2.2.6
-- Caffe:   NO
-- Protobuf:   NO
-- Glog:   YES
-- Performing Test HAVE_CXX_WNO_UNINITIALIZED
-- Performing Test HAVE_CXX_WNO_UNINITIALIZED - Success
-- Performing Test HAVE_CXX_WNO_DEPRECATED_DECLARATIONS
-- Performing Test HAVE_CXX_WNO_DEPRECATED_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_COMPARE
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_COMPARE - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_VARIABLE - Success
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE - Success
-- Checking for module 'freetype2'
--   Found freetype2, version 23.1.17
-- Checking for module 'harfbuzz'
--   Found harfbuzz, version 2.6.4
-- freetype2:   YES (ver 23.1.17)
-- harfbuzz:    YES (ver 2.6.4)
-- HDF5: Using hdf5 compiler wrapper to determine C configuration
-- Found HDF5: /lib64/libhdf5.so;/lib64/libsz.so;/lib64/libz.so;/lib64/libdl.so;/lib64/libm.so (found version "1.10.5")  
-- Module opencv_ovis disabled because OGRE3D was not found
-- No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available.
-- Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
-- Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
-- Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
-- Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags
-- Checking for module 'tesseract'
--   Package 'tesseract', required by 'virtual:world', not found
-- Tesseract:   NO
-- Using whitelist: opencv_core;opencv_cudev;opencv_dnn;opencv_dnn_objdetect;opencv_highgui;opencv_improc;opencv_ml;opencv_python3;opencv_video;opencv_videoio
-- Module opencv_calib3d disabled by whitelist
-- Module opencv_features2d disabled by whitelist
-- Module opencv_flann disabled by whitelist
-- Module opencv_gapi disabled by whitelist
-- Module opencv_java_bindings_generator disabled by whitelist
-- Module opencv_java disabled by whitelist
-- Module opencv_objdetect disabled by whitelist
-- Module opencv_photo disabled by whitelist
-- Module opencv_python_bindings_generator disabled by whitelist
-- Module opencv_python_tests disabled by whitelist
-- Module opencv_python2 disabled by whitelist
-- Module opencv_stitching disabled by whitelist
-- Module opencv_ts disabled by whitelist
-- Module opencv_alphamat disabled by whitelist
-- Module opencv_aruco disabled by whitelist
-- Module opencv_bgsegm disabled by whitelist
-- Module opencv_bioinspired disabled by whitelist
-- Module opencv_ccalib disabled by whitelist
-- Module opencv_cudaarithm disabled by whitelist
-- Module opencv_cudabgsegm disabled by whitelist
-- Module opencv_cudacodec disabled by whitelist
-- Module opencv_cudafeatures2d disabled by whitelist
-- Module opencv_cudafilters disabled by whitelist
-- Module opencv_cudaimgproc disabled by whitelist
-- Module opencv_cudalegacy disabled by whitelist
-- Module opencv_cudaobjdetect disabled by whitelist
-- Module opencv_cudaoptflow disabled by whitelist
-- Module opencv_cudastereo disabled by whitelist
-- Module opencv_cudawarping disabled by whitelist
-- Module opencv_datasets disabled by whitelist
-- Module opencv_dnn_superres disabled by whitelist
-- Module opencv_dpm disabled by whitelist
-- Module opencv_face disabled by whitelist
-- Module opencv_freetype disabled by whitelist
-- Module opencv_fuzzy disabled by whitelist
-- Module opencv_hdf disabled by whitelist
-- Module opencv_hfs disabled by whitelist
-- Module opencv_img_hash disabled by whitelist
-- Module opencv_intensity_transform disabled by whitelist
-- Module opencv_line_descriptor disabled by whitelist
-- Module opencv_optflow disabled by whitelist
-- Module opencv_phase_unwrapping disabled by whitelist
-- Module opencv_plot disabled by whitelist
-- Module opencv_quality disabled by whitelist
-- Module opencv_rapid disabled by whitelist
-- Module opencv_reg disabled by whitelist
-- Module opencv_rgbd disabled by whitelist
-- Module opencv_saliency disabled by whitelist
-- Module opencv_shape disabled by whitelist
-- Module opencv_stereo disabled by whitelist
-- Module opencv_structured_light disabled by whitelist
-- Module opencv_superres disabled by whitelist
-- Module opencv_surface_matching disabled by whitelist
-- Module opencv_text disabled by whitelist
-- Module opencv_tracking disabled by whitelist
-- Module opencv_videostab disabled by whitelist
-- Module opencv_xfeatures2d disabled by whitelist
-- Module opencv_ximgproc disabled by whitelist
-- Module opencv_xobjdetect disabled by whitelist
-- Module opencv_xphoto disabled by whitelist
-- Allocator metrics storage type: 'long long'
-- Performing Test HAVE_CXX_WNO_UNUSED_BUT_SET_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_BUT_SET_VARIABLE - Success
-- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /home/vfbsilva/Source/opencv/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- 
-- General configuration for OpenCV 4.3.0-pre =====================================
--   Version control:               4.2.0-490-gdbb30134bc
-- 
--   Extra modules:
--     Location (extra):            /home/vfbsilva/Source/opencv_contrib/modules
--     Version control (extra):     4.2.0-47-g88c4ed01
-- 
--   Platform:
--     Timestamp:                   2020-03-20T17:54:57Z
--     Host:                        Linux 4.19.108-1-MANJARO x86_64
--     CMake:                       3.16.5
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               RELEASE
-- 
--   CPU/HW features:
--     Baseline:                    SSE SSE2 SSE3
--       requested:                 SSE3
--     Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
--       requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
--       SSE4_1 (13 files):         + SSSE3 SSE4_1
--       SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
--       FP16 (0 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
--       AVX (4 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
--       AVX2 (25 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
--       AVX512_SKX (3 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ standard:                11
--     C++ Compiler:                /usr/bin/c++-8  (ver 8.3.0)
--     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 -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -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 -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/cc-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 -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -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 -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a   -Wl,--gc-sections -Wl,--as-needed  
--     Linker flags (Debug):        -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a   -Wl,--gc-sections -Wl,--as-needed  
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:          m pthread cudart_static -lpthread dl rt nppc nppial nppicc nppicom nppidei nppif nppig nppim nppist nppisu nppitc npps cublas cudnn cufft -L/usr/local/cuda/lib64 -L/lib64
--     3rdparty dependencies:
-- 
--   OpenCV modules:
--     To be built:                 core cudev dnn dnn_objdetect highgui imgcodecs imgproc ml video videoio
--     Disabled:                    world
--     Disabled by dependency:      alphamat aruco bgsegm bioinspired calib3d ccalib cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping datasets dnn_superres dpm face features2d flann freetype fuzzy gapi hdf hfs img_hash intensity_transform java java_bindings_generator line_descriptor objdetect optflow phase_unwrapping photo plot python2 python_bindings_generator python_tests quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts videostab xfeatures2d ximgproc xobjdetect xphoto
--     Unavailable:                 cnn_3dobj cvv js matlab ovis python3 sfm viz
--     Applications:                apps
--     Documentation:               NO
--     Non-free algorithms:         NO
-- 
--   GUI: 
--     GTK+:                        YES (ver 3.24.14)
--       GThread :                  YES (ver 2.64.0)
--       GtkGlExt:                  NO
--     VTK support:                 NO
-- 
--   Media I/O: 
--     ZLib:                        /lib64/libz.so (ver 1.2.11)
--     JPEG:                        /lib64/libjpeg.so (ver 80)
--     WEBP:                        /lib64/libwebp.so (ver encoder: 0x020f)
--     PNG:                         /lib64/libpng.so (ver 1.6.37)
--     TIFF:                        /lib64/libtiff.so (ver 42 / 4.1.0)
--     JPEG 2000:                   /lib64/libjasper.so (ver 2.0.16)
--     HDR:                         YES
--     SUNRASTER:                   YES
--     PXM:                         YES
--     PFM:                         YES
-- 
--   Video I/O:
--     DC1394:                      YES (2.2.6)
--     FFMPEG:                      YES
--       avcodec:                   YES (58.54.100)
--       avformat:                  YES (58.29.100)
--       avutil:                    YES (56.31.100)
--       swscale:                   YES (5.5.100)
--       avresample:                NO
--     GStreamer:                   YES (1.16.2)
--     v4l/v4l2:                    YES (linux/videodev2.h)
-- 
--   Parallel framework:            TBB (ver 2020.1 interface 11101)
-- 
--   Other third-party libraries:
--     Intel IPP:                   2020.0.0 Gold [2020.0.0]
--            at:                   /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/icv
--     Intel IPP IW:                sources (2020.0.0)
--               at:                /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/iw
--     Lapack:                      YES (/lib64/liblapack.so /lib64/libblas.so)
--     Eigen:                       YES (ver 3.3.7)
--     Custom HAL:                  NO
--     Protobuf:                    build (3.5.1)
-- 
--   NVIDIA CUDA:                   YES (ver 10.2, CUFFT CUBLAS)
--     NVIDIA GPU arch:             61
--     NVIDIA PTX archs:
-- 
--   cuDNN:                         YES (ver 7.6.5)
-- 
--   OpenCL:                        YES (no extra features)
--     Include path:                /home/vfbsilva/Source/opencv/3rdparty/include/opencl/1.2
--     Link libraries:              Dynamic load
-- 
--   Python 2:
--     Interpreter:                 /usr/bin/python2.7 (ver 2.7.17)
--     Libraries:                   NO
--     numpy:                       /usr/lib/python2.7/site-packages/numpy/core/include (ver 1.16.4)
--     install path:                -
-- 
--   Python (for build):            /usr/bin/python2.7
-- 
--   Java:                          
--     ant:                         /bin/ant (ver 1.10.7)
--     JNI:                         /usr/lib/jvm/default/include /usr/lib/jvm/default/include/linux /usr/lib/jvm/default/include
--     Java wrappers:               NO
--     Java tests:                  NO

--

> --   Install to:                    /home/vfbsilva/Source/venv
> -- -----------------------------------------------------------------
> -- 
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /home/vfbsilva/Source/opencv/release-small
> make[1]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> Scanning dependencies of target quirc
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> Scanning dependencies of target opencv_videoio_plugins
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> Scanning dependencies of target ade
> Scanning dependencies of target ippiw
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
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> 
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> [  0%] Building CXX object modules/CMakeFiles/ade.dir/__/3rdparty/ade/ade-0.1.1f/sources/ade/source/edge.cpp.o
> Scanning dependencies of target libprotobuf
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
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> 
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> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
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> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
> 
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> Scanning dependencies of target opencv_version
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[2]: Entrando no diretório '/home/vfbsilva/Source/opencv/release-small'
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> Scanning dependencies of target opencv_ml
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
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> 
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> [ 46%] Linking CXX executable ../../bin/opencv_version
> /usr/bin/ld: ../../lib/libopencv_core.so.4.3.0: referência não definida para "cblas_zgemm"
> /usr/bin/ld: ../../lib/libopencv_core.so.4.3.0: referência não definida para "cblas_sgemm"
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> /usr/bin/ld: ../../lib/libopencv_core.so.4.3.0: referência não definida para "cblas_cgemm"
> collect2: error: ld returned 1 exit status
> make[2]: *** [apps/version/CMakeFiles/opencv_version.dir/build.make:88: bin/opencv_version] Erro 1
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make[1]: *** [CMakeFiles/Makefile2:2822: apps/version/CMakeFiles/opencv_version.dir/all] Erro 2
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> [ 63%] Building CXX object modules/imgproc/CMakeFiles/opencv_imgproc.dir/filter.avx2.cpp.o
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> [ 65%] Linking CXX shared library ../../lib/libopencv_imgproc.so
> make[2]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> [ 65%] Built target opencv_imgproc
> make[1]: Saindo do diretório '/home/vfbsilva/Source/opencv/release-small'
> 
> make: *** [Makefile:163: all] Erro 2
> `

@scipioni
Copy link

ModuleNotFoundError: No module named 'numpy'

you have to install python-numpy package

@vfbsilva
Copy link

I do have it installed.
CMakeError.log
CMakeOutput.log

sh install_opencv.sh

-- The CXX compiler identification is GNU 8.3.0
-- The C compiler identification is GNU 8.3.0
-- Check for working CXX compiler: /usr/bin/c++-8
-- Check for working CXX compiler: /usr/bin/c++-8 -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Check for working C compiler: /usr/bin/cc-8
-- Check for working C compiler: /usr/bin/cc-8 -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Detected processor: x86_64
-- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.17", minimum required is "2.7") 
-- Found PythonLibs: /lib64/libpython2.7.so (found suitable exact version "2.7.17") 
-- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.1", minimum required is "3.2") 
-- Found PythonLibs: /lib64/libpython3.8.so (found suitable exact version "3.8.1") 
-- Looking for ccache - not found
-- Performing Test HAVE_CXX_FSIGNED_CHAR
-- Performing Test HAVE_CXX_FSIGNED_CHAR - Success
-- Performing Test HAVE_C_FSIGNED_CHAR
-- Performing Test HAVE_C_FSIGNED_CHAR - Success
-- Performing Test HAVE_CXX_W
-- Performing Test HAVE_CXX_W - Success
-- Performing Test HAVE_C_W
-- Performing Test HAVE_C_W - Success
-- Performing Test HAVE_CXX_WALL
-- Performing Test HAVE_CXX_WALL - Success
-- Performing Test HAVE_C_WALL
-- Performing Test HAVE_C_WALL - Success
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-- Performing Test HAVE_C_WERROR_RETURN_TYPE - Success
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-- Performing Test HAVE_CXX_WERROR_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_C_WERROR_NON_VIRTUAL_DTOR
-- Performing Test HAVE_C_WERROR_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_CXX_WERROR_ADDRESS
-- Performing Test HAVE_CXX_WERROR_ADDRESS - Success
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-- Performing Test HAVE_C_WERROR_ADDRESS - Success
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-- Performing Test HAVE_CXX_WERROR_SEQUENCE_POINT - Success
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-- Performing Test HAVE_C_WERROR_SEQUENCE_POINT - Success
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-- Performing Test HAVE_CXX_WFORMAT - Success
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-- Performing Test HAVE_C_WFORMAT - Success
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-- Performing Test HAVE_CXX_WERROR_FORMAT_SECURITY - Success
-- Performing Test HAVE_C_WERROR_FORMAT_SECURITY
-- Performing Test HAVE_C_WERROR_FORMAT_SECURITY - Success
-- Performing Test HAVE_CXX_WMISSING_DECLARATIONS
-- Performing Test HAVE_CXX_WMISSING_DECLARATIONS - Success
-- Performing Test HAVE_C_WMISSING_DECLARATIONS
-- Performing Test HAVE_C_WMISSING_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES
-- Performing Test HAVE_CXX_WMISSING_PROTOTYPES - Failed
-- Performing Test HAVE_C_WMISSING_PROTOTYPES
-- Performing Test HAVE_C_WMISSING_PROTOTYPES - Success
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES
-- Performing Test HAVE_CXX_WSTRICT_PROTOTYPES - Failed
-- Performing Test HAVE_C_WSTRICT_PROTOTYPES
-- Performing Test HAVE_C_WSTRICT_PROTOTYPES - Success
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-- Performing Test HAVE_CXX_WUNDEF - Success
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-- Performing Test HAVE_CXX_WPOINTER_ARITH - Success
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-- Performing Test HAVE_C_WPOINTER_ARITH - Success
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-- Performing Test HAVE_CXX_WSIGN_PROMO - Success
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-- Performing Test HAVE_C_WSIGN_PROMO - Failed
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-- Performing Test HAVE_CXX_WUNINITIALIZED - Success
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-- Performing Test HAVE_C_WUNINITIALIZED - Success
-- Performing Test HAVE_CXX_WSUGGEST_OVERRIDE
-- Performing Test HAVE_CXX_WSUGGEST_OVERRIDE - Success
-- Performing Test HAVE_C_WSUGGEST_OVERRIDE
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-- Performing Test HAVE_CXX_WNO_DELETE_NON_VIRTUAL_DTOR
-- Performing Test HAVE_CXX_WNO_DELETE_NON_VIRTUAL_DTOR - Success
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR
-- Performing Test HAVE_C_WNO_DELETE_NON_VIRTUAL_DTOR - Failed
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-- Performing Test HAVE_CXX_WNO_UNNAMED_TYPE_TEMPLATE_ARGS - Failed
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-- Performing Test HAVE_CXX_WNO_COMMENT
-- Performing Test HAVE_CXX_WNO_COMMENT - Success
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-- Performing Test HAVE_C_WNO_COMMENT - Success
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-- Performing Test HAVE_C_WIMPLICIT_FALLTHROUGH_3 - Success
-- Performing Test HAVE_CXX_WNO_STRICT_OVERFLOW
-- Performing Test HAVE_CXX_WNO_STRICT_OVERFLOW - Success
-- Performing Test HAVE_C_WNO_STRICT_OVERFLOW
-- Performing Test HAVE_C_WNO_STRICT_OVERFLOW - Success
-- Performing Test HAVE_CXX_FDIAGNOSTICS_SHOW_OPTION
-- Performing Test HAVE_CXX_FDIAGNOSTICS_SHOW_OPTION - Success
-- Performing Test HAVE_C_FDIAGNOSTICS_SHOW_OPTION
-- Performing Test HAVE_C_FDIAGNOSTICS_SHOW_OPTION - Success
-- Performing Test HAVE_CXX_WNO_LONG_LONG
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-- Performing Test HAVE_CXX_FDATA_SECTIONS
-- Performing Test HAVE_CXX_FDATA_SECTIONS - Success
-- Performing Test HAVE_C_FDATA_SECTIONS
-- Performing Test HAVE_C_FDATA_SECTIONS - Success
-- Performing Test HAVE_CXX_MSSE (check file: cmake/checks/cpu_sse.cpp)
-- Performing Test HAVE_CXX_MSSE - Success
-- Performing Test HAVE_CXX_MSSE2 (check file: cmake/checks/cpu_sse2.cpp)
-- Performing Test HAVE_CXX_MSSE2 - Success
-- Performing Test HAVE_CXX_MSSE3 (check file: cmake/checks/cpu_sse3.cpp)
-- Performing Test HAVE_CXX_MSSE3 - Success
-- Performing Test HAVE_CXX_MSSSE3 (check file: cmake/checks/cpu_ssse3.cpp)
-- Performing Test HAVE_CXX_MSSSE3 - Success
-- Performing Test HAVE_CXX_MSSE4_1 (check file: cmake/checks/cpu_sse41.cpp)
-- Performing Test HAVE_CXX_MSSE4_1 - Success
-- Performing Test HAVE_CXX_MPOPCNT (check file: cmake/checks/cpu_popcnt.cpp)
-- Performing Test HAVE_CXX_MPOPCNT - Success
-- Performing Test HAVE_CXX_MSSE4_2 (check file: cmake/checks/cpu_sse42.cpp)
-- Performing Test HAVE_CXX_MSSE4_2 - Success
-- Performing Test HAVE_CXX_MF16C (check file: cmake/checks/cpu_fp16.cpp)
-- Performing Test HAVE_CXX_MF16C - Success
-- Performing Test HAVE_CXX_MFMA
-- Performing Test HAVE_CXX_MFMA - Success
-- Performing Test HAVE_CXX_MAVX (check file: cmake/checks/cpu_avx.cpp)
-- Performing Test HAVE_CXX_MAVX - Success
-- Performing Test HAVE_CXX_MAVX2 (check file: cmake/checks/cpu_avx2.cpp)
-- Performing Test HAVE_CXX_MAVX2 - Success
-- Performing Test HAVE_CXX_MAVX512F (check file: cmake/checks/cpu_avx512.cpp)
-- Performing Test HAVE_CXX_MAVX512F - Success
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD (check file: cmake/checks/cpu_avx512common.cpp)
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD - Success
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD_MAVX512VL_MAVX512BW_MAVX512DQ (check file: cmake/checks/cpu_avx512skx.cpp)
-- Performing Test HAVE_CXX_MAVX512F_MAVX512CD_MAVX512VL_MAVX512BW_MAVX512DQ - Success
-- Performing Test HAVE_CPU_BASELINE_FLAGS
-- Performing Test HAVE_CPU_BASELINE_FLAGS - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_1
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_1 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_2
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_SSE4_2 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_FP16
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_FP16 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX2
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX2 - Success
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX512_SKX
-- Performing Test HAVE_CPU_DISPATCH_FLAGS_AVX512_SKX - Success
-- Performing Test HAVE_CXX_FVISIBILITY_HIDDEN
-- Performing Test HAVE_CXX_FVISIBILITY_HIDDEN - Success
-- Performing Test HAVE_C_FVISIBILITY_HIDDEN
-- Performing Test HAVE_C_FVISIBILITY_HIDDEN - Success
-- Performing Test HAVE_CXX_FVISIBILITY_INLINES_HIDDEN
-- Performing Test HAVE_CXX_FVISIBILITY_INLINES_HIDDEN - Success
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN
-- Performing Test HAVE_C_FVISIBILITY_INLINES_HIDDEN - Failed
-- Performing Test HAVE_LINK_AS_NEEDED
-- Performing Test HAVE_LINK_AS_NEEDED - Success
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for posix_memalign
-- Looking for posix_memalign - found
-- Looking for malloc.h
-- Looking for malloc.h - found
-- Looking for memalign
-- Looking for memalign - found
-- Check if the system is big endian
-- Searching 16 bit integer
-- Looking for sys/types.h
-- Looking for sys/types.h - found
-- Looking for stdint.h
-- Looking for stdint.h - found
-- Looking for stddef.h
-- Looking for stddef.h - found
-- Check size of unsigned short
-- Check size of unsigned short - done
-- Using unsigned short
-- Check if the system is big endian - little endian
-- Found ZLIB: /lib64/libz.so (found suitable version "1.2.11", minimum required is "1.2.3") 
-- Found JPEG: /lib64/libjpeg.so (found version "80") 
-- Found TIFF: /lib64/libtiff.so (found version "4.1.0") 
-- Found WebP: /lib64/libwebp.so  
-- Found Jasper: /lib64/libjasper.so (found version "2.0.16") 
-- Found ZLIB: /lib64/libz.so (found version "1.2.11") 
-- Found PNG: /lib64/libpng.so (found version "1.6.37") 
-- Looking for /usr/include/libpng/png.h
-- Looking for /usr/include/libpng/png.h - not found
-- Checking for module 'gtk+-3.0'
--   Found gtk+-3.0, version 3.24.14
-- Checking for module 'gthread-2.0'
--   Found gthread-2.0, version 2.64.0
-- Found TBB (env): /lib64/libtbb.so
-- IPPICV: Download: ippicv_2020_lnx_intel64_20191018_general.tgz
-- found Intel IPP (ICV version): 2020.0.0 [2020.0.0 Gold]
-- at: /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/icv
-- found Intel IPP Integration Wrappers sources: 2020.0.0
-- at: /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/iw
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found CUDNN: /lib64/libcudnn.so (found suitable version "7.6.5", minimum required is "7.5") 
-- CUDA detected: 10.2
-- CUDA NVCC target flags: -D_FORCE_INLINES;-gencode;arch=compute_61,code=sm_61;-D_FORCE_INLINES
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_BLAS_LIBRARY) 
-- Looking for sgemm_
-- Looking for sgemm_ - not found
-- Looking for sgemm_
-- Looking for sgemm_ - found
-- Found BLAS: /lib64/libblas.so  
-- Looking for cheev_
-- Looking for cheev_ - not found
-- Looking for cheev_
-- Looking for cheev_ - found
-- A library with LAPACK API found.
-- LAPACK(LAPACK/Generic): LAPACK_LIBRARIES: /lib64/liblapack.so;/lib64/libblas.so
-- LAPACK(LAPACK/Generic): Support is enabled.
-- Performing Test HAVE_CXX_WNO_DEPRECATED
-- Performing Test HAVE_CXX_WNO_DEPRECATED - Success
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES
-- Performing Test HAVE_CXX_WNO_MISSING_PROTOTYPES - Failed
-- Performing Test HAVE_CXX_WNO_MISSING_DECLARATIONS
-- Performing Test HAVE_CXX_WNO_MISSING_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WNO_SHADOW
-- Performing Test HAVE_CXX_WNO_SHADOW - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_PARAMETER
-- Performing Test HAVE_CXX_WNO_UNUSED_PARAMETER - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS
-- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS - Success
-- Performing Test HAVE_CXX_WNO_SIGN_COMPARE
-- Performing Test HAVE_CXX_WNO_SIGN_COMPARE - Success
-- Performing Test HAVE_CXX_WNO_SIGN_PROMO
-- Performing Test HAVE_CXX_WNO_SIGN_PROMO - Success
-- Performing Test HAVE_CXX_WNO_UNDEF
-- Performing Test HAVE_CXX_WNO_UNDEF - Success
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE - Failed
-- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS
-- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS - Success
-- Performing Test HAVE_CXX_WNO_EXTRA
-- Performing Test HAVE_CXX_WNO_EXTRA - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION
-- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE - Success
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32
-- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32 - Failed
-- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF
-- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF - Success
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH - Failed
-- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE
-- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE - Success
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE
-- Performing Test HAVE_CXX_WNO_INCONSISTENT_MISSING_OVERRIDE - Failed
-- Performing Test HAVE_CXX_WNO_IMPLICIT_FALLTHROUGH
-- Performing Test HAVE_CXX_WNO_IMPLICIT_FALLTHROUGH - Success
-- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS
-- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS - Success
-- Performing Test HAVE_CXX_WNO_CLASS_MEMACCESS
-- Performing Test HAVE_CXX_WNO_CLASS_MEMACCESS - Success
-- Found apache ant: /bin/ant (1.10.7)
-- Found JNI: /usr/lib/jvm/default/jre/lib/amd64/libjawt.so  
-- VTK support is disabled. Compilation of the sample code has failed.
-- Performing Test HAVE_C_WNO_UNUSED_VARIABLE
-- Performing Test HAVE_C_WNO_UNUSED_VARIABLE - Success
-- Performing Test HAVE_C_WNO_SHADOW
-- Performing Test HAVE_C_WNO_SHADOW - Success
-- ADE: Download: v0.1.1f.zip
-- OpenCV Python: during development append to PYTHONPATH: /home/vfbsilva/Source/opencv/release-small/python_loader
-- Performing Test HAVE_CXX_WNO_STRICT_ALIASING
-- Performing Test HAVE_CXX_WNO_STRICT_ALIASING - Success
-- Checking for modules 'libavcodec;libavformat;libavutil;libswscale'
--   Found libavcodec, version 58.54.100
--   Found libavformat, version 58.29.100
--   Found libavutil, version 56.31.100
--   Found libswscale, version 5.5.100
-- Checking for module 'libavresample'
--   Package 'libavresample', required by 'virtual:world', not found
-- Checking for module 'gstreamer-base-1.0'
--   Found gstreamer-base-1.0, version 1.16.2
-- Checking for module 'gstreamer-app-1.0'
--   Found gstreamer-app-1.0, version 1.16.2
-- Checking for module 'gstreamer-riff-1.0'
--   Found gstreamer-riff-1.0, version 1.16.2
-- Checking for module 'gstreamer-pbutils-1.0'
--   Found gstreamer-pbutils-1.0, version 1.16.2
-- Checking for module 'libdc1394-2'
--   Found libdc1394-2, version 2.2.6
-- Caffe:   NO
-- Protobuf:   NO
-- Glog:   YES
-- Performing Test HAVE_CXX_WNO_UNINITIALIZED
-- Performing Test HAVE_CXX_WNO_UNINITIALIZED - Success
-- Performing Test HAVE_CXX_WNO_DEPRECATED_DECLARATIONS
-- Performing Test HAVE_CXX_WNO_DEPRECATED_DECLARATIONS - Success
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_COMPARE
-- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_COMPARE - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_VARIABLE - Success
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE
-- Performing Test HAVE_CXX_WNO_ENUM_COMPARE - Success
-- Checking for module 'freetype2'
--   Found freetype2, version 23.1.17
-- Checking for module 'harfbuzz'
--   Found harfbuzz, version 2.6.4
-- freetype2:   YES (ver 23.1.17)
-- harfbuzz:    YES (ver 2.6.4)
-- HDF5: Using hdf5 compiler wrapper to determine C configuration
-- Found HDF5: /lib64/libhdf5.so;/lib64/libsz.so;/lib64/libz.so;/lib64/libdl.so;/lib64/libm.so (found version "1.10.5")  
-- Module opencv_ovis disabled because OGRE3D was not found
-- No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available.
-- Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake.
-- Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components.
-- Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h
-- Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags
-- Checking for module 'tesseract'
--   Package 'tesseract', required by 'virtual:world', not found
-- Tesseract:   NO
-- Using whitelist: opencv_core;opencv_cudev;opencv_dnn;opencv_dnn_objdetect;opencv_highgui;opencv_improc;opencv_ml;opencv_python3;opencv_video;opencv_videoio
-- Module opencv_calib3d disabled by whitelist
-- Module opencv_features2d disabled by whitelist
-- Module opencv_flann disabled by whitelist
-- Module opencv_gapi disabled by whitelist
-- Module opencv_java_bindings_generator disabled by whitelist
-- Module opencv_java disabled by whitelist
-- Module opencv_objdetect disabled by whitelist
-- Module opencv_photo disabled by whitelist
-- Module opencv_python_tests disabled by whitelist
-- Module opencv_python2 disabled by whitelist
-- Module opencv_stitching disabled by whitelist
-- Module opencv_ts disabled by whitelist
-- Module opencv_alphamat disabled by whitelist
-- Module opencv_aruco disabled by whitelist
-- Module opencv_bgsegm disabled by whitelist
-- Module opencv_bioinspired disabled by whitelist
-- Module opencv_ccalib disabled by whitelist
-- Module opencv_cudaarithm disabled by whitelist
-- Module opencv_cudabgsegm disabled by whitelist
-- Module opencv_cudacodec disabled by whitelist
-- Module opencv_cudafeatures2d disabled by whitelist
-- Module opencv_cudafilters disabled by whitelist
-- Module opencv_cudaimgproc disabled by whitelist
-- Module opencv_cudalegacy disabled by whitelist
-- Module opencv_cudaobjdetect disabled by whitelist
-- Module opencv_cudaoptflow disabled by whitelist
-- Module opencv_cudastereo disabled by whitelist
-- Module opencv_cudawarping disabled by whitelist
-- Module opencv_datasets disabled by whitelist
-- Module opencv_dnn_superres disabled by whitelist
-- Module opencv_dpm disabled by whitelist
-- Module opencv_face disabled by whitelist
-- Module opencv_freetype disabled by whitelist
-- Module opencv_fuzzy disabled by whitelist
-- Module opencv_hdf disabled by whitelist
-- Module opencv_hfs disabled by whitelist
-- Module opencv_img_hash disabled by whitelist
-- Module opencv_intensity_transform disabled by whitelist
-- Module opencv_line_descriptor disabled by whitelist
-- Module opencv_optflow disabled by whitelist
-- Module opencv_phase_unwrapping disabled by whitelist
-- Module opencv_plot disabled by whitelist
-- Module opencv_quality disabled by whitelist
-- Module opencv_rapid disabled by whitelist
-- Module opencv_reg disabled by whitelist
-- Module opencv_rgbd disabled by whitelist
-- Module opencv_saliency disabled by whitelist
-- Module opencv_shape disabled by whitelist
-- Module opencv_stereo disabled by whitelist
-- Module opencv_structured_light disabled by whitelist
-- Module opencv_superres disabled by whitelist
-- Module opencv_surface_matching disabled by whitelist
-- Module opencv_text disabled by whitelist
-- Module opencv_tracking disabled by whitelist
-- Module opencv_videostab disabled by whitelist
-- Module opencv_xfeatures2d disabled by whitelist
-- Module opencv_ximgproc disabled by whitelist
-- Module opencv_xobjdetect disabled by whitelist
-- Module opencv_xphoto disabled by whitelist
-- Allocator metrics storage type: 'long long'
-- Performing Test HAVE_CXX_WNO_UNUSED_BUT_SET_VARIABLE
-- Performing Test HAVE_CXX_WNO_UNUSED_BUT_SET_VARIABLE - Success
-- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /home/vfbsilva/Source/opencv/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- Performing Test HAVE_CXX_WNO_OVERLOADED_VIRTUAL
-- Performing Test HAVE_CXX_WNO_OVERLOADED_VIRTUAL - Success
-- Performing Test HAVE_CXX_WNO_UNUSED_PRIVATE_FIELD
-- Performing Test HAVE_CXX_WNO_UNUSED_PRIVATE_FIELD - Failed
CMake Error at modules/python/python_loader.cmake:18 (file):
  file RELATIVE_PATH called with incorrect number of arguments
Call Stack (most recent call first):
  modules/python/common.cmake:153 (include)
  modules/python/python3/CMakeLists.txt:19 (include)


CMake Error at cmake/OpenCVGenConfig.cmake:70 (file):
  file RELATIVE_PATH called with incorrect number of arguments
Call Stack (most recent call first):
  CMakeLists.txt:898 (include)


-- 
-- General configuration for OpenCV 4.3.0-pre =====================================
--   Version control:               4.2.0-490-gdbb30134bc
-- 
--   Extra modules:
--     Location (extra):            /home/vfbsilva/Source/opencv_contrib/modules
--     Version control (extra):     4.2.0-47-g88c4ed01
-- 
--   Platform:
--     Timestamp:                   2020-03-21T21:26:40Z
--     Host:                        Linux 4.19.108-1-MANJARO x86_64
--     CMake:                       3.16.5
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               RELEASE
-- 
--   CPU/HW features:
--     Baseline:                    SSE SSE2 SSE3
--       requested:                 SSE3
--     Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
--       requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
--       SSE4_1 (13 files):         + SSSE3 SSE4_1
--       SSE4_2 (1 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
--       FP16 (0 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
--       AVX (4 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
--       AVX2 (25 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
--       AVX512_SKX (3 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ standard:                11
--     C++ Compiler:                /usr/bin/c++-8  (ver 8.3.0)
--     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 -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -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 -Wuninitialized -Winit-self -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/cc-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 -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -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 -Wuninitialized -Winit-self -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a   -Wl,--gc-sections -Wl,--as-needed  
--     Linker flags (Debug):        -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a   -Wl,--gc-sections -Wl,--as-needed  
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:          m pthread cudart_static -lpthread dl rt nppc nppial nppicc nppicom nppidei nppif nppig nppim nppist nppisu nppitc npps cublas cudnn cufft -L/usr/local/cuda/lib64 -L/lib64
--     3rdparty dependencies:
-- 
--   OpenCV modules:
--     To be built:                 core cudev dnn dnn_objdetect highgui imgcodecs imgproc ml python3 video videoio
--     Disabled:                    world
--     Disabled by dependency:      alphamat aruco bgsegm bioinspired calib3d ccalib cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping datasets dnn_superres dpm face features2d flann freetype fuzzy gapi hdf hfs img_hash intensity_transform java java_bindings_generator line_descriptor objdetect optflow phase_unwrapping photo plot python2 python_tests quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts videostab xfeatures2d ximgproc xobjdetect xphoto
--     Unavailable:                 cnn_3dobj cvv js matlab ovis sfm viz
--     Applications:                apps
--     Documentation:               NO
--     Non-free algorithms:         NO
-- 
--   GUI: 
--     GTK+:                        YES (ver 3.24.14)
--       GThread :                  YES (ver 2.64.0)
--       GtkGlExt:                  NO
--     VTK support:                 NO
-- 
--   Media I/O: 
--     ZLib:                        /lib64/libz.so (ver 1.2.11)
--     JPEG:                        /lib64/libjpeg.so (ver 80)
--     WEBP:                        /lib64/libwebp.so (ver encoder: 0x020f)
--     PNG:                         /lib64/libpng.so (ver 1.6.37)
--     TIFF:                        /lib64/libtiff.so (ver 42 / 4.1.0)
--     JPEG 2000:                   /lib64/libjasper.so (ver 2.0.16)
--     HDR:                         YES
--     SUNRASTER:                   YES
--     PXM:                         YES
--     PFM:                         YES
-- 
--   Video I/O:
--     DC1394:                      YES (2.2.6)
--     FFMPEG:                      YES
--       avcodec:                   YES (58.54.100)
--       avformat:                  YES (58.29.100)
--       avutil:                    YES (56.31.100)
--       swscale:                   YES (5.5.100)
--       avresample:                NO
--     GStreamer:                   YES (1.16.2)
--     v4l/v4l2:                    YES (linux/videodev2.h)
-- 
--   Parallel framework:            TBB (ver 2020.1 interface 11101)
-- 
--   Other third-party libraries:
--     Intel IPP:                   2020.0.0 Gold [2020.0.0]
--            at:                   /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/icv
--     Intel IPP IW:                sources (2020.0.0)
--               at:                /home/vfbsilva/Source/opencv/release-small/3rdparty/ippicv/ippicv_lnx/iw
--     Lapack:                      YES (/lib64/liblapack.so /lib64/libblas.so)
--     Eigen:                       YES (ver 3.3.7)
--     Custom HAL:                  NO
--     Protobuf:                    build (3.5.1)
-- 
--   NVIDIA CUDA:                   YES (ver 10.2, CUFFT CUBLAS)
--     NVIDIA GPU arch:             61
--     NVIDIA PTX archs:
-- 
--   cuDNN:                         YES (ver 7.6.5)
-- 
--   OpenCL:                        YES (no extra features)
--     Include path:                /home/vfbsilva/Source/opencv/3rdparty/include/opencl/1.2
--     Link libraries:              Dynamic load
-- 
--   Python 2:
--     Interpreter:                 /usr/bin/python2.7 (ver 2.7.17)
--     Libraries:                   NO
--     numpy:                       /usr/lib/python2.7/site-packages/numpy/core/include (ver 1.16.4)
--     install path:                -
-- 
--   Python 3:
--     Interpreter:                 /usr/bin/python3 (ver 3.8.1)
--     Libraries:                   /lib64/libpython3.8.so (ver 3.8.1)
--     numpy:                       /usr/lib/python3.8/site-packages/numpy/core/include (ver 1.18.1)
--     install path:                lib/python3.8/site-packages/cv2/python-3.8
-- 
--   Python (for build):            /usr/bin/python2.7
-- 
--   Java:                          
--     ant:                         /bin/ant (ver 1.10.7)
--     JNI:                         /usr/lib/jvm/default/include /usr/lib/jvm/default/include/linux /usr/lib/jvm/default/include
--     Java wrappers:               NO
--     Java tests:                  NO
-- 
--   Install to:
-- -----------------------------------------------------------------
-- 
-- Configuring incomplete, errors occurred!
See also "/home/vfbsilva/Source/opencv/release-small/CMakeFiles/CMakeOutput.log".
See also "/home/vfbsilva/Source/opencv/release-small/CMakeFiles/CMakeError.log".

@vfbsilva
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@AlexeyAB can you give us some insight? This has been broken for months :/

@vfbsilva
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@AlexeyAB @acxz I got this reported as as fix:
https://github.com/pjreddie/darknet/pull/1348/files

Can any of you give a proper opinion?

Regards,
vfbsilva

@AlexeyAB
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AlexeyAB commented Mar 26, 2020 •
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@vfbsilva

Can you elaborate on about what exactly my opinion interests you?

@AlexeyAB @acxz I got this reported as as fix:
https://github.com/pjreddie/darknet/pull/1348/files

Basically, I just sudo pacman -S opencv, and then follow this link to modify two files in the darknet repo. (I used only pjreddie's github repo only, not AlexeyAB's.)

@phunc20 suggests this solution because he uses https://github.com/pjreddie/darknet rather than https://github.com/AlexeyAB/darknet where it is solved years ago

@vfbsilva
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@AlexeyAB super thanks fortaking time to look. I would like some opinion on how to feasible is to run the net in a non ubuntu setup. @acxz has tried to fix it and I found other people also struggling outside ubuntu reporting in forums like reddit.

@acxz
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acxz commented Mar 29, 2020

So I decided to finally fix this issue up. A proper description of the issue and a temporary solution is here: https://aur.archlinux.org/packages/darknet-alexeyab-git/#pinned-736206

TLDR:
Problem: OpenCV on Arch is compiled with GCC9 but CUDA on Arch is still compiled with GCC8.
Solution: Use GCC8 compiled OpenCV.

The ArchLinux Darknet package now works!
(Assuming you use the right OpenCV version, directions for this are also in the link)

Going ahead and closing this issue. Hopefully ArchLinux releases CUDA compiled with GCC9 soon, until then the temporary solution linked above will have to suffice.

@acxz acxz closed this as completed Mar 29, 2020
@AlexeyAB AlexeyAB added the Solved The problem is solved using the correct settings label Mar 29, 2020
@AlexeyAB AlexeyAB changed the title [Build Error] undefined references to opencv libraries OS: ArchLinux - [Build Error] undefined references to opencv libraries Mar 29, 2020
@acxz acxz mentioned this issue May 25, 2022
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@vfbsilva @scipioni @AlexeyAB @acxz