1. Install xcode

2. Install homebrew: http://mxcl.github.io/homebrew/

3. Install dependencies with homebrew: brew install swig sdl sdl_image sdl_mixer sdl_ttf scons boost boost-jam wget libvorbis libogg gettext libpng intltool cmake

4. Correct boost liberary names
cd /usr/local/lib
ln -s libboost_filesystem-mt.a libboost_filesystem.a
ln -s libboost_filesystem-mt.dylib libboost_filesystem.dylib
ln -s libboost_system-mt.a libboost_system.a
ln -s libboost_system-mt.dylib libboost_system.dylib
ln -s libboost_regex-mt.a libboost_regex.a
ln -s libboost_regex-mt.dylib libboost_regex.dylib

5. Add gettext to path. Insert the following line into /Users/USERNAME/.bash_profile:
export PATH="/usr/local/Cellar/gettext/0.18.2/bin/:$PATH"

6. Install python dependencies with easy_install pil pyyaml pyrex cython

7. Download sld: http://www.libsdl.org/ and move SDL.Framework to /Library/Frameworks/

8. Download, build and Install fifechan:
git clone  git://github.com/fifengine/fifechan.git
cd fifechan
cmake
sudo make install
sudo cp -R include/fifechan/sdl /usr/local/include/fifechan/

9. Download, build and Install fifengine:
cd ...
git clone  git://github.com/fifengine/fifengine.git
scons -c
scons

9. Download an run unknown-horizons
cd ..
git clone git://github.com/unknown-horizons/unknown-horizons.git
cd unknown-horizons
python setup.py build_i18n
Now it should run: python run_uh.py --fife-path=../fifengine/

10. Create app
sudo easy_install -U py2app
cp -r ../fifengine/engine/python/fife .
mkdir src/Contents/
mkdir src/Contents/Resources/
cp -r content src/Contents/Resources/
python setup_mac.py py2app