To install the tools package, it is recommended that you install 
one of the pre-compiled versions on the fiswidges web page.
http://neurocog.lrdc.pitt.edu/.

If you want to build tools yourself, please edit the Makefile.defs file.
The following are things you will want to do before building the C/C++ programs:

Set SITE to the directory were you have the imgio libraries and headers
Set CFLAG to use the compiler flags you want to build with.
Uncomment and edit the variables for the platform you are building on.

If you want to build the tools.jar file, do the following before 
hand.

Put fiswidgets-system.jar and fiswidgets-all.jar in your CLASSPATH
Edit the following variables in the Makefile.defs file:

JAVAC -- path to the javac program
JAVADOC -- path to the javadoc program
JFLAGS -- flags to be used by javac
JAR -- path to the jar program