GNULinux
Installing
Building Emacs
You can build Emacs from source on every distribution out there. Use this option only if your distribution doesn't already provide an Emacs version of interest to you.
Very few distributions bundle Emacs snapshot builds. If your distribution does not have very latest builds, try the following unofficial repositories.
Debian
See emacs-snapshot APT repo. The page contains installation instructions. High quality, highly recommended builds! After adding the repo install with the following command:
$ sudo apt-get install emacs-snapshot
Ubuntu
$ sudo apt-add-repository ppa:cassou/emacs
$ sudo apt-get install emacs-snapshot
Gentoo
See Emacs on Gentoo page.
Arch Linux
See emacs-bzr package from AUR
Slackware
Compile and Install using emacs.SlackBuild (unofficial).
Fedora
No pre-built packages.
SusE
No pre-built packages.
Mandriva
No pre-built packages.