MATLAB engin use in share lib

I've delopped an application which communicates with MATLAB using a shared lib and the MATLAB Engine API. Built with Qt and qmake, it works just fine on Windows and Mac but I got an issue on Linux Debian 9.2: When my application is loading my shared lib I got : Cannot load library /home/bruno/dev/aw-svn/qmake_build/release/bin/lib/libAwMatlabSupport.so: (/usr/local/MATLAB/R2017b/bin/glnxa64/libmwi18n.so: undefined symbol: UCNV_FROM_U_CALLBACK_STOP_WITH_INVISIBLE_CHARS_56)

I start my application by setting LD_LIBRARY_PATH to point to /usr/local/MATLAB/R2017b/bin/glnxa64

I used gcc 4.9.2 on Debian 9.2 and MATLAB 2017b

I've already get rid of that king of message which are mostly about missing libs or incorrect LD_LIBRARY_PATH but here I'm in a deadend.

Any help appreciated.