View the most recent changes for the dgpsip port at: dgpsip.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for dgpsip.
The raw portfile for dgpsip 1.32 is located here:
http://dgpsip.darwinports.com/dports/comms/dgpsip/Portfile
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Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/dgpsip

The dgpsip Portfile 30221 2007-10-22 22:43:55Z jmpp macports.org $

PortSystem 1.0
Name: dgpsip
Version: 1.32
Category: comms
Maintainers: nomaintainer
Description: Differential GPS over IP communication device
Long Description: On a stationary GPS without a differential correction signal, you should see a 20 m average radius "drunken walk" pattern. On the same receiver with DGPS corrections and a good view of the sky, the error the same receiver with DGPS corrections and a good view of the sky, the error should be reduced to approximately 2 m average radius. If you've always wanted to know exactly where your house is located without that annoying GPS "wander," but didn't want to spend the money for a DGPS radio, here is your big chance! I'd like to announce a fun DGPS hack. I've written a small Un*x server and client for redistributing DGPS correction signals over the Net. Basically the server grabs the serial byte stream from my DGPS radio and sends it off over a TCP connection. The client does the same thing but in reverse. The result is that you can receive the local DGPS corrections from absolutely anywhere by using the Internet as the world's largest extension cord. You'll still need to be within 1000 miles or so of San Francisco, California, USA for best results. However chances are better error will still be reduced if you are 2000 to 3000 miles away. Several respondents from 2000 miles away have noted that the remote differential signals have diminished the SA-induced position and velocity errors by approximately 3 times.
Homepage: http://www.wsrcc.com/wolfgang/gps/dgps-ip.html
Platform: darwin freebsd
Master Sites: http://www.wsrcc.com/wolfgang/ftp/
Checksums: md5 af948d8c485ac84a343c9210f2f05267

If you haven't already installed Darwin Ports, you can find easy instructions for doing so at the main Darwin Ports page.
Once Darwin Ports has been installed, in a terminal window and while online, type the following and hit return:

%  cd /opt/local/bin/portslocation/dports/dgpsip
%  sudo port install dgpsip  
Password: 

You will then be prompted for your root password, which you should enter. You may have to wait for a few minutes while the software is retrieved from the network and installed for you. Y ou should see something that looks similar to:

--->  Fetching dgpsip
--->  Verifying checksum for dgpsip
--->  Extracting dgpsip
--->  Configuring dgpsip
--->  Building dgpsip with target all

--->  Staging dgpsip into destroot

--->  Installing dgpsip

- Make sure that you do not close the terminal window while Darwin Ports is working. Once the software has been installed, you can find further information about using dgpsip with these commands:

%  man dgpsip
%  apropos dgpsip
%  which dgpsip
%  locate dgpsip

 Where to find more information: