For the final step of installing Greenfoot KinectServer I am getting the error as " checking for boost/thread.hpp... yes checking for the Boost thread library... no configure: error: cannot find the flags to link with Boost thread " For your reference, Listed below are certain commands I had modified ;not listed in the website instructions, to remove the errors. 1) sudo /opt/local/bin/port install libusb-devel +universal i replaced the libusb-devel by libusb and this was fine. 2) I have installed all the Mac ports for Mountain lion from Apple website. http://www.macports.org/install.php I tried to refer to the previous discussion but failed to understand where to make the changes. Please help. Thank you.