I plan on using an older model, a late 2009 polycarbonate Macbook for college and I am going to need some compilers. We will be working on C and C++ so I was thinking on buying OSX Mavericks for that Macbook since I do not plan to use my MacBook Pro for college purposes. One of the basic reasons why I plan to upgrade on OS X Mavericks when it comes out is Xcode. Can you point our some compiler, some free of charge I can use for 2-3 weeks at least until I upgrade the Macbook to Mavericks? Currently it is running version 10.6.8 on a 2.26 GHz and 2 GB DDR3 RAM. Is it smart to invest in Mavericks for a model this old?