Runtime loading of shared libraries

Hello Guys,

I have written a c++ library (lest us say libMyLIB.so) that I have wrapped using mex.

Now, when I start matlab from the linux terminal, the calls to the library work fine.

However, when I start matlab from the icon in the unity applet, I get an error which says " cannot open shared library libxxxx.so", where libxxx is needed by libMYLIB.so.

I assume that this is because libxxx.so is in an unconventional path that is specified in the ~/.bashrc file.

I was wondering if there is any way I could specify something inside Matlab to make it look into other paths in the sytem.

Setting $LD_LIBRARY_PATH in matlab seems to make no difference. Are there any other path variables that need to be set.

Any help would be appreciated.

[Ashish Uthama]

How did you set the "$LD_LIBRARY_PATH in matlab" ?

[Natesh Srinivasan]

I use matlab's setenv and I verfied checking the current value of $LD_LIBRARY_PATH.

I also tried the ldconfig way to make sure that the path is globally set across for all users in the system. But still the same error :(

[Ashish Uthama]

I would try running !ldd libMyLIB.so in both scenarios to see if it tells me something. To confirm - you launch MATLAB from unity, call the mex file from the MATLAB command prompt, and you get a system error? (I dont use unity, so I am not sure if it sandboxes applications or has a different uid.. or ...)

Answer 1

[Ashish Uthama]

Use ldconfig or use MATLAB's setenv.