Configuring MacOS X to compile and install open source software using XCode Tools
XCode Tools:
If you want to compile and install Open Source Software on your MacOS X machine then you should install MacOS X's Xcode tools. Xcode tools provide the compilers and other software development kits (SDKs) to enable you to compile and install open source software on your computer.
Most Mac OS X distributions discs come with Xcode Tools. For example, I found the Xcode tools on Mac mini's installation disc (Mac OS version 10.4).

