[PYTHON] Comment installer PyCPX (OSX Yosemite, Canopy)

PyCPX is a python wrapper for the IBM CPlex. While it can be downloaded via pip and easy_install, we need several steps to successfull installation.

Environment:

• Mac OS X Yosemite
• Enthough Canopy (https://www.enthought.com/products/canopy/)

Step 1: installing CPLEX

• Downloaded CPLEX is compressed with .cpgz. Decompress it to get .bin file first. Then chmod and execute it on terminal.
• Go to python directory (CPLEX_Studio1261/cplex/python/2.7/x86-64_osx) and execute python setup.py install. Make sure that your python is Canopy's one (not /usr/bin/python but /Users/[username]/Library/Enthought/Canopy_64bit/User/bin/python). See also http://www-01.ibm.com/support/knowledgecenter/SSSA5P_12.6.0/ilog.odms.studio.help/Optimization_Studio/topics/PLUGINS_ROOT/ilog.odms.cplex.help/CPLEX/GettingStarted/topics/set_up/Python_setup.html

Step 2: installing PyCPX with linking CPLEX

• Just executing pip install pycpx will produce the following error:

In file included from pycpx/pyconcert.cpp:255:

pycpx/cplex_interface.hpp:12:10: fatal error: 'ilcplex/ilocplexi.h' file not found

#include <ilcplex/ilocplexi.h>

We actually need to specify the include directory that you downloaded in Step 1! The answer is:

pip install --global-option='build_ext' --global-option=-i[the path where you downloaded cplex]/cplex_studio1261/cplex/include pycpx

See also http://stackoverflow.com/questions/18783390/python-pip-specify-a-library-directory-and-an-include-directory