CMTK can binaries can be downloaded from the [[http://www.nitrc.org/projects/cmtk/|project homepage]] and are generally the way to go. On a mac we currently use the dmg installer for macosx 10.6 NOT macports.

However you may also want to compile from scratch. On a mac this looks like this:

====== Prerequisites ======
  * [[https://developer.apple.com/xcode/|Apple Developer Tools]]
  * [[http://www.cmake.org/|Cmake]]

====== Get the source ======
Use svn ([[http://www.nitrc.org/scm/?group_id=212|see NITRC page]]) to get the official source or use git to clone my unofficial github mirror (daily updates) :

  git clone git://github.com/jefferis/cmtk.git # public repo, read only

to clone a git mirror of the svn repository.

====== Compile ======

  cd cmtk/core
  mkdir buildv31 # I normally make a build directory for each public release
  cd buildv31
  cmake -C ../config/OSX-10.8-x86_64.cmake .. # -C [config script] <cmtk_source_root_dir>
  make -j 8 # -j 8 uses 8 threads if you are in a hurry
  sudo make install
  
Note that OSX-10.8-x86_64.cmake config should work for macosx >10.6

Done.