I didn't install from source, and have no idea about doing that. What I do to install is: Download DrRacket from racket-lang.org. Move it to the Applications folder as is conventional. Add to the ~/.bash_profile the following line:
Now you'll be able to use the "racket" and "mzscheme" and "raco" and all other programs from the "bin" subdirectory by just typing their names. (This applies to any terminal windows opened after you've changed .bash_profile.)
