Build mpl on OSX has proven to be a nightmare because of all thedifferent types of zlib, png and freetype that may be on your system.The recommended and supported way to build is to use the make.osx filein this directory.  This script requires you to set a PREFIXenvironment variable where you want to the install to go.  It willfetch the dependencies from a remove server and install them into yourPREFIX dir, and then build mpl against them.  It should ignore anylib, png or freetype on your systemExample usage::  PREFIX=/Users/jdhunter/dev make -f make.osx fetch deps mpl_install