If you want to help out with Code::Blocks, you can install with Homebrew (http://brew.sh):
After installing brew (under /usr/local), you can find the required codeblocks.rb formula here:
https://github.com/afb/homebrew/tree/codeblocks-osx
To install the latest version of codeblocks with all dependencies (like wxMac/wxOSX), you can use:
cd /usr/local
brew update
curl https://github.com/Homebrew/homebrew/compare/master...afb:codeblocks-osx.patch | git am -3
brew install --HEAD codeblocks
This will download the latest revision from the Subversion repository (http://www.codeblocks.org/downloads/7) HEAD, and build it.
Once a new release supporting wxWidgets 3 is out, the formula version can be updated.
There is also an option to build all the contrib-plugins, after installing their requirements:
--with-contrib-plugins
If you want the current release (http://www.codeblocks.org/downloads/25) 13.12, you will have to use the X11 version (with wxGTK):
https://github.com/afb/homebrew/tree/codeblocks-gtk
However, this is not compatible with the later (Quartz-only) releases of GTK+ in Homebrew.