Obtaining Emacs 24 on OS X is really simple. There are several popular ways to do it.
As a binary package
Build it from source
The second easy way to obtain Emacs 24 is via homebrew. Just type the following incantation in your shell and you’re done:
$ brew install emacs --cocoa --use-git-head --HEAD $ cp -r /usr/local/Cellar/emacs/HEAD/Emacs.app /Applications/
The second step is optional, but it’s recommended if you like to start Emacs from the launchpad or from Spotlight.
Chances are good you have an older version of Emacs installed by default with OS X. It's suggested you to remove that older Emacs version to avoid conflicts with the new one. Do this:
$ sudo rm /usr/bin/emacs $ sudo rm -rf /usr/share/emacs
That’s all folk! You may now proceed to the configuration section.
Use a package manager (Emacs 23 only at time of writing)
port install emacs
You can add +<variant> [+<variant>...] where variant is one or more of:
- dbus: Builds emacs with D-Bus support
- gtk: Builds emacs as an X11 program with GTK+2 widgets
- motif: Builds emacs as an X11 program with Motif
- universal: Build for multiple architectures
- x11: Builds emacs as a X11 program with Lucid widgets
The gtk, motif and x11 variants require (depend on) MacPorts' X11 libraries.