I downloaded the developer tools from Apple and I am trying to install gcc without installing Xcode and all the other tools. I was able to customize the install so that only gcc-4.0 and bsdsdk were installed. gcc is actually installed and appears to be working but stdio.h did not install. I couldn't find the library with 'locate' or 'spotlight' and I checked '/usr/include/'. The reason I am doing this is that all I need is a command line compiler.