View the most recent changes for the gmp-cxx-wrappers port at: gmp-cxx-wrappers.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for gmp-cxx-wrappers.
The raw portfile for gmp-cxx-wrappers 4.2.1 is located here:
http://gmp-cxx-wrappers.darwinports.com/dports/devel/gmp-cxx-wrappers/Portfile
Find related portfiles with the unique DarwinPorts.com search feature.
Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/gmp-cxx-wrappers

The gmp-cxx-wrappers Portfile 30224 2007-10-22 22:49:14Z jmpp macports.org $

PortSystem 1.0
Name: gmp-cxx-wrappers
Version: 4.2.1
Revision: 2
Category: devel math
Maintainers: nomaintainer
Platform: darwin freebsd
Description: C++ wrappers for the GNU multiple precision arithmetic library
Long Description: The C++ wrappers for gmp. To build them requires that gmp be installed, hence this portfile, which rebuilds gmp, but only installs the C++ wrappers.

Homepage: http://www.swox.com/gmp/

Master Sites: gnu:gmp

use_bzip2 yes
distfiles gmp-${version}${extract.suffix}
Checksums: gmp-${version}${extract.suffix} md5 091c56e0e1cca6b09b17b69d47ef18e3

depends_run port:gmp

worksrcdir gmp-${version}

configure.env ABI=32
configure.cflags-append -force_cpusubtype_ALL
configure.args --infodir=\\\${prefix}/share/info --enable-shared --enable-cxx

test.run yes
test.target check

post-destroot {
ui_msg "$UI_PREFIX Running ranlib on static libraries"
system "ranlib ${destroot}${prefix}/lib/libgmpxx.a"

delete ${destroot}${prefix}/include/gmp.h

delete ${destroot}${prefix}/lib/libgmp.a
delete ${destroot}${prefix}/lib/libgmp.la
delete ${destroot}${prefix}/lib/libgmp.dylib
delete ${destroot}${prefix}/lib/libgmp.3.dylib
delete ${destroot}${prefix}/lib/libgmp.3.4.1.dylib

delete ${destroot}${prefix}/share
}

platform darwin i386 {
configure.env-delete ABI=32
configure.args-append --host=none-apple-darwin
configure.cflags-delete -force_cpusubtype_ALL
}

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/gmp-cxx-wrappers
%  sudo port install gmp-cxx-wrappers  
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 gmp-cxx-wrappers
--->  Verifying checksum for gmp-cxx-wrappers
--->  Extracting gmp-cxx-wrappers
--->  Configuring gmp-cxx-wrappers
--->  Building gmp-cxx-wrappers with target all

--->  Staging gmp-cxx-wrappers into destroot

--->  Installing gmp-cxx-wrappers

- 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 gmp-cxx-wrappers with these commands:

%  man gmp-cxx-wrappers
%  apropos gmp-cxx-wrappers
%  which gmp-cxx-wrappers
%  locate gmp-cxx-wrappers

 Where to find more information: