GRASS GIS on Mac OS X

PROJ.4 version: 4.4.9
datum version: 1.3
remotesensing.org

NOTE: Make sure you have the latest PROJ source. PostGIS may have problems otherwise. Also, make sure to grab the proj-datumshift file for useful datums for the U.S., Canada and New Zealand.

In a Terminal type:

$ cd path_to_folder_containing_proj4_source.tar.gz
$ tar -zxf proj-4.4.9.tar.gz

Then unzip the proj-datumshift zip into the proj/nad folder. And continue:

$ cd proj-4.4.9
$ ./configure --mandir=/usr/local/share/man
$ make
$ sudo make install
$ sudo cp -f nad/nzgd2kgrid0005.gsb /usr/local/share/proj