I've put together an ncurses installer for Linux, based on buildroot (it looks the same as menuconfig when building the kernel). It will automatically download, extract and optionally edit ~/.bashrc to add the needed environment variables for compiling stuff with the devkitARM and devkitPPC toolchains, as well as compiling all the examples you choose to install. It is also possible to perform updates using it. Somebody could adapt the code for other *NIX systems in the future since it is pretty standard bash/make/awk/C (with curses) code.
http://x11.gp2x.de/devkitpro/devkitPro- ... ux.tar.bz2
