Cannot find dependent shared libraries.

[Rakshit Kothari]

Invalid MEX-file '/home/rakshit/zed-matlab/matlab/mexZED.mexa64': Missing dependent shared libraries:
'libsl_core.so' required by
'/usr/local/zed/lib/libsl_calibration.so->/usr/local/zed/lib/libsl_zed.so->/home/rakshit/zed-matlab/matlab/mexZED.mexa64'

I will update this question with more details as I keep hacking at a solution.

[Zeliang Wang]

Hi, I have similar problems. I think I have successfully created mexZED.mexa64 according to the tutorial. Below are the info shown on my Terminal in Ubuntu 16.04

zeliang@l009:/Gitdocs/Codes/ZEDcam/zed-matlab$ mkdir build
zeliang@l009:/Gitdocs/Codes/ZEDcam/zed-matlab$ cd build
zeliang@l009:/Gitdocs/Codes/ZEDcam/zed-matlab/build$ cmake ../src
-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- MATLAB_ROOT: /usr/local/MATLAB/R2017a
-- Matlab libraries will be used
-- MATLAB Found, MATLAB MEX will be compiled.
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- 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 CUDA: /usr/local/cuda-9.2 (found suitable exact version "9.2")
-- Found CUDA: /usr/local/cuda-9.2 (found version "9.2")
-- Found OpenCV: /usr/local (found version "3.4.2") found components: core highgui imgproc
-- Configuring done
-- Generating done
-- Build files have been written to: /home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/build
zeliang@l009:/Gitdocs/Codes/ZEDcam/zed-matlab/build$ make
Scanning dependencies of target mexZED
[ 50%] Building CXX object mex/CMakeFiles/mexZED.dir/mexZED.cpp.o
/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/src/mex/mexZED.cpp: In function ‘void mexFunction(int, mxArray**, int, const mxArray**)’:
/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/src/mex/mexZED.cpp:545:37: warning: ‘void sl::Camera::setCameraFPS(int)’ is deprecated [-Wdeprecated-declarations]
zedCam->setCameraFPS(val);
^
In file included from /usr/local/zed/include/sl_core/utils/Core.hpp:63:0,
from /usr/local/zed/include/sl_zed/Camera.hpp:63,
from /usr/local/zed/include/sl/Camera.hpp:1,
from /home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/src/mex/mexZED.cpp:24:
/usr/local/zed/include/sl_zed/Camera.hpp:742:60: note: declared here
/@cond SHOWHIDDEN/SL_DEPRECATED(/@endcond/void setCameraFPS(int des
^
/usr/local/zed/include/sl_core/utils/types.hpp:110:29: note: in definition of macro ‘SL_DEPRECATED’
#define SL_DEPRECATED(func) func attribute ((deprecated))
^
[100%] Linking CXX shared library mexZED.mexa64
[100%] Built target mexZED
zeliang@l009:~/Gitdocs/Codes/ZEDcam/zed-matlab/build$ make install
[100%] Built target mexZED
Install the project...
-- Install configuration: ""
-- Installing: /home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/src/../matlab/mexZED.mexa64
-- Set runtime path of "/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/src/../matlab/mexZED.mexa64" to ""

It looks Build files have been successfully created, however, when I run either of the MATLAB example code ZED_Camera.m It prompts the following error message

=========SL_ZED_WITH_MATLAB -- Basic=========
Invalid MEX-file '/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/matlab/mexZED.mexa64': Missing dependent
shared libraries:
'libsl_input.so' required by '/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/matlab/mexZED.mexa64'
'libsl_core.so' required by '/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/matlab/mexZED.mexa64'
'libsl_zed.so' required by '/home/zeliang/Gitdocs/Codes/ZEDcam/zed-matlab/matlab/mexZED.mexa64'
...

I can confirm that ZED SDK, CUDA 9.2, OpenCV 3.4.2 are installed and working without any problems on my Linux machine. Also, I can locate these three .so files in the relevant directory

zeliang@l009:~/Gitdocs/Codes/ZEDcam/zed-matlab/build$ cd /usr/local/zed/lib
zeliang@l009:/usr/local/zed/lib$ ls
libsl_core.so libsl_input.so libsl_zed.so

I have been getting stuck with this for a while, but still can't solve the problem. Can anybody help me on this? Thanks!

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