First, make sure you have the GNUstep environment variables (e.g. GNUSTEP_ROOT, etc) set in your current shell.
Otherwise issue: source /usr/local/GNUstep/System/Library/Makefiles/GNUstep.sh
(where GNUstep has been installed in /usr/local/GNUstep; change for your local settings accordingly)
I assume you already have StepTalk? installed and download the released SourceCode from http://www.moltalk.org.
If you consider using CVS to get the newest developing branch skip this step and read the instructions at the end of this page.
Download MolTalk's source code from http://www.moltalk.org
and extract it with: tar xzf MolTalk-VERSION_??.tar.gz
Enter the newly created directory with the source code and type
make -C libmoltalk install
make -C MolTalk install
make -C MolTalk/Module install
to compile and install the code
After compilation and installing the library and program, issue
cp MolTalk/MolTalk.stenv $GNUSTEP_USER_ROOT/Library/StepTalk/Environments
This file defines the classes that are available to the Smalltalk scripting language.
Test your installation with a simple call to the MolTalk interpreter:
MolTalk
and watch its output. Or, try some examples in the directory MolTalk/scripts.
The CVS on [bioinformatics.org] holds the current SourceCode in an accessible repository.
Follow the instructions given in: SourceCode on how to get the correct version out of the CVS, then continue with step 3.