mex cc file in ubuntu

I've download some code online. The makefile is like following:

      all: cascade

      cascade: cascade.cc model.cc model.h
        mex -o cascade              \
        CXXFLAGS="\$$CXXFLAGS -O3 -march=nocona -fomit-frame-pointer"  \
        cascade.cc model.cc

      clean:
        rm *.mex*

I use command !make to run in matlab. But it gives me the following error:

      mex -O cascade              \
        CXXFLAGS="\$CXXFLAGS -O3 -march=nocona -fomit-frame-pointer"  \
        cascade.cc model.cc
      /bin/sh: 1: mex: not found
      make: *** [cascade] Error 127

I go to /bin/sh of my system. There is no `mex` indeed. What should I do to add `mex` to /bin/sh.

Thanks

Answer 1

[Walter Roberson]

Look in the "bin" directory under the directory you installed MATLAB into. Add that directory to your Linux path.