Invalid MEX-file

[livst]

Hi,

I followed the steps described in the guide and I got this error when trying to build matcaffe:

'/Realtime_Multi-Person_Pose_Estimation/caffe_demo/matlab/+caffe/private/caffe_.mexa64': /Realtime_Multi-Person_Pose_Estimation/caffe_demo/matlab/+caffe/private/caffe_.mexa64: undefined symbol: _ZN2cv11getTextSizeERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEidiPi

Any solution?

Thank you.

[mddrill]

I am having this issue also, has anyone figured out the solution?

[Annie-Ge]

I changed some symbolic link in /bin/glnxa64 and matcaffe works well. ^_^

libopencv_core.so.2.4 -> /usr/lib/x86_64-linux-gnu/libopencv_core.so.2.4.11
libopencv_highgui.so.2.4 -> /usr/lib/x86_64-linux-gnu/libopencv_highgui.so.2.4.11
libopencv_imgproc.so.2.4 -> /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so.2.4.11

/matlab/r2016a/bin/glnxa64# mv libopencv_imgproc.so.2.4 libopencv_imgproc.so.2.4.bak
/matlab/r2016a/bin/glnxa64# mv libopencv_highgui.so.2.4 libopencv_highgui.so.2.4.bak
/matlab/r2016a/bin/glnxa64# mv libopencv_core.so.2.4 libopencv_core.so.2.4.bak

/Matlab/bin/glnxa64$ sudo ln /home/gjc/Documents/SoftInstall/opencv-2.4.11/lib/libopencv_core.so.2.4.11 libopencv_core.so.2.4

/Matlab/bin/glnxa64$ sudo ln /home/gjc/Documents/SoftInstall/opencv-2.4.11/lib/libopencv_highgui.so.2.4.11 libopencv_highgui.so.2.4

/Matlab/bin/glnxa64$ sudo ln /home/gjc/Documents/SoftInstall/opencv-2.4.11/lib/libopencv_imgproc.so.2.4.11 libopencv_imgproc.so.2.4

[aleksispi]

Inspired by annie2008hi's above post, I changed ALL symbolic links related to libopencv in a similar fashion (did not work if I only did the three suggested ones). Thus, for all libopencv files in /matlab2015a/bin/glnxa64 I did (note that I have 2.4.9 instead of 2.4.11, since that's my version):

sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_ABCD.so.2.4.9 libopencv_ABCD.so.2.4

where ABCD should be replaced by the respective libopencv names (core, highgui, ...). I did nothing more, except after the above I reran 'make clean all matcaffe'. Then it worked.

[ErikGartner]

Good job @aleksispi!

I basically did this. Note that I don't link to any specific system version just the current system version.

sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_calib3d.so libopencv_calib3d.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_contrib.so libopencv_contrib.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_core.so libopencv_core.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_features2d.so libopencv_features2d.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_flann.so libopencv_flann.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_gpu.so libopencv_gpu.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_highgui.so libopencv_highgui.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so libopencv_imgproc.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_legacy.so libopencv_legacy.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_ml.so libopencv_ml.so.2.4  
# sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_nonfree.so libopencv_nonfree.so.2.4     ## This might not exist in the default ubuntu package.
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_objdetect.so libopencv_objdetect.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_photo.so libopencv_photo.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_stitching.so libopencv_stitching.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_video.so libopencv_video.so.2.4
sudo ln -sfn /usr/lib/x86_64-linux-gnu/libopencv_videostab.so libopencv_videostab.so.2.4