View the most recent changes for the libmatheval port at: libmatheval.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for libmatheval.
The raw portfile for libmatheval 1.1.7 is located here:
http://libmatheval.darwinports.com/dports/math/libmatheval/Portfile
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Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/libmatheval

The libmatheval Portfile 35402 2008-03-27 17:58:32Z mww macports.org $

PortSystem 1.0

Name: libmatheval
Version: 1.1.7
Category: math devel
Platform: darwin
Maintainers: mww
Description: in-memory tree representations of mathematical functions
Long Description: GNU libmatheval is comprised of several procedures that make it possible to create in-memory tree representations of mathematical functions over single or multiple variables and later use them to evaluate function for specified variable values, to create a corresponding tree for function derivatives over a specified variable, or to print a textual representation of the in-memory tree to a specified string. The library supports arbitrary variable names in expressions, decimal constants, basic unary and binary operators, and elementary mathematical functions.

Homepage: http://www.gnu.org/software/libmatheval/
Master Sites: gnu
Checksums: sha1 2444be901eb24605e286f33647bb28ef3d452db4
Patch Files: patch-config.h.in.diff

depends_build bin:guile-config:guile

configure.args --infodir=${prefix}/share/info

test.run yes
test.target check

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

--->  Staging libmatheval into destroot

--->  Installing libmatheval

- 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 libmatheval with these commands:

%  man libmatheval
%  apropos libmatheval
%  which libmatheval
%  locate libmatheval

 Where to find more information: