View the most recent changes for the i386-mingw32-w32api port at: i386-mingw32-w32api.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for i386-mingw32-w32api.
The raw portfile for i386-mingw32-w32api 3.13 is located here:
http://i386-mingw32-w32api.darwinports.com/dports/cross/i386-mingw32-w32api/Portfile
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The i386-mingw32-w32api Portfile 50980 2009-05-14 19:41:55Z and.damore macports.org $
PortSystem 1.0

Name: i386-mingw32-w32api
Version: 3.13
Maintainers: landonf
Description: Mingw32 Win32 headers and import libraries
Long Description: Mingw32 Win32 headers and import libraries to support cross-compilation of software written for the Win32 Application Programming Interface as created by Microsoft.
Homepage: http://www.mingw.org
Category: cross devel

# Parameters for this port.
set crossgcc-target i386-mingw32

Platform: darwin
Master Sites: sourceforge:mingw
distname w32api-${version}-mingw32-dev
Checksums: md5 a50fff6bc1e1542451722e2650cb53b4 sha1 5eb7d8ec0fe032a92bea3a2c8282a78df2f1793c rmd160 9d8d456b333a68a8c3df59d2f3cdf76586632c4e

extract.dir ${worksrcpath}
extract.mkdir yes

# Nothing to configure
use_configure no

# Nothing to build
build {}

destroot.violate_mtree yes
destroot {
file mkdir ${destpath}/${prefix}/${crossgcc-target}
file copy -force ${worksrcpath}/include ${destpath}/${prefix}/${crossgcc-target}
file copy -force ${worksrcpath}/lib ${destpath}/${prefix}/${crossgcc-target}
}

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/i386-mingw32-w32api
%  sudo port install i386-mingw32-w32api  
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 i386-mingw32-w32api
--->  Verifying checksum for i386-mingw32-w32api
--->  Extracting i386-mingw32-w32api
--->  Configuring i386-mingw32-w32api
--->  Building i386-mingw32-w32api with target all

--->  Staging i386-mingw32-w32api into destroot

--->  Installing i386-mingw32-w32api

- 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 i386-mingw32-w32api with these commands:

%  man i386-mingw32-w32api
%  apropos i386-mingw32-w32api
%  which i386-mingw32-w32api
%  locate i386-mingw32-w32api

 Where to find more information: