What is the path of MathLink?

Hi,
My Mathematica version is 10.4.1 (on OS X). I am trying to call Mathematica from Julia language. I get the following error in Julia:

julia> using Mathematica

ERROR: LoadError: ArgumentError: MathLink not found in path

The path to mathlink.framework on my machine is:
/Applications/Mathematica.app/Contents/Frameworks/mathlink.framework

What is the full path of MathLink that I should add to my $PATH variable so that Julia can find the correct executable/library?

Regards,

Rangarajan