error: undefined reference to 'cv::imread(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'

[swansorter]

@jsulm
sorry it is
LIBS += -L/usr/local/arm/opencv-arm/lib -lopencv_core -lopencv_imgcodecs -lopencv_imgproc -lopencv_objdetect

[jsulm]

@swansorter Did you try full rebuild after fixing pro file?

[swansorter]

@jsulm yess sir same error

[swansorter]

@swansorter The m

[jsulm]

@swansorter Actually you should install the libs/headers in your sysroot

[swansorter]

@jsulm how to install the libs/headers in my sysroot

[jsulm]

@swansorter Simply copy them to your sysroot...

[swansorter]

@jsulm what i need to copy and in sysroot where i need to paste?

[jsulm]

@swansorter Libs to: /opt/rootfs-s5p4418/usr/lib
Include files to: /opt/rootfs-s5p4418/usr/include

[swansorter]

@jsulm
from : usr/local/arm/opencv-arm/libs To: /opt/rootfs-s5p4418/usr/lib
from : usr/local/arm/opencv-arm/include To: /opt/rootfs-s5p4418/usr/include
ist this write?

[jsulm]

@swansorter yes

[swansorter]

@jsulm i followed above steps still same error