Building Kiwi on Mac OS X is not hard, with most dependencies being available in MacPorts. To set up your build environment for Kiwi on Mac OS X, do the following:
Install the following packages from MacPorts:
boost, wget, gmp, mpfr, popt, gettext, cdrtools, libiconv, libmpc
You also require the SCons build system, and the Mercurial version control system. You can either download these packages from the following websites, or obtain them from MacPorts:
To install SCons, run the following command inside the extracted source:
python setup.py install
Mercurial features a standard Mac OS X installer.
Installing from MacPorts just involves making the call to the port command, everything else is automated.
Once you have performed these steps, follow the instructions on the Building Kiwi page.