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main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

taylor answered on December 25, 2021 Popularity 4/10 Helpfulness 6/10

answer main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

Comment

That means, you're not linking some required lib,

(in your case, ALL of the opencv libs are missing from the cmdline !)

try again with:

g++ main.cpp -I/opt/robots/pepper/ctc-linux64-atom-2.5.10.7/opencv2/include/ -L/opt/robots/pepper/ctc-linux64-atom-2.5.10.7/opencv2/lib -lopencv_core -lopencv_highgui -lopencv_imgcodecs -lopencv_imgproc -lopencv_videoio

Popularity 4/10 Helpfulness 6/10 Language cpp

Source: Grepper

Tags: c++ undefined-reference

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Contributed on Dec 25 2021

taylor

0 Answers Avg Quality 2/10

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main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

Comment

 --> My custom command that live sin my /usr/bin folder , that runs my cv2 cpp files  just fine without any problems  
 --> that may help someone 

#!/bin/bash 

file=$@

if [ "${file: -4}" = ".cpp"  ]; then 
        g++ $file -I/opt/robots/pepper/ctc-linux64-atom-2.5.10.7/opencv2/include/ -L/opt/robots/pepper/ctc-linux64-atom-2.5.10.7/opencv2/lib -lopencv_core -lopencv_highgui -lopencv_imgcodecs -lopencv_imgproc -lopencv_videoio 
    if $status ; then 
        ./a.out && rm -rf a.out
    fi
else
    echo "This Command should be used only with cpp files that uses the opencv library !!"
fi

Popularity 4/10 Helpfulness 1/10 Language cpp

Source: stackoverflow.com

Tags: undefined-reference c++

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Contributed on Dec 25 2021

taylor

0 Answers Avg Quality 2/10

main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

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main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

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main.cpp:(.text+0x51): undefined reference to `cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

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