Question about compiling .jar files?

[Dan Bolser]

Hi I am new to gcc / gcj.

I am trying to compile jung-1.5.jar, which requires colt-1.2.0.zip. I
(think) I can compile colt-1.2.0.zip without a problem, but I can't seem
to satisfy jung-1.5.jar to the existence of colt-1.2.0.zip. 

I am not sure what I should / should not be doing.

I get messages like this...

edu/uci/ics/jung/algorithms/GraphMatrixOperations.java: In class
`edu.uci.ics.jung.algorithms.GraphMatrixOperations':
edu/uci/ics/jung/algorithms/GraphMatrixOperations.java: In method
`edu.uci.ics.jung.algorithms.GraphMatrixOperations.matrixToGraph(cern.colt.matrix.DoubleMatrix2D,java.lang.String)':
edu/uci/ics/jung/algorithms/GraphMatrixOperations.java:108: error: cannot
find file for class cern.colt.matrix.DoubleMatrix2D
edu/uci/ics/jung/algorithms/GraphMatrixOperations.java:108: error: cannot
find file for class cern.colt.matrix.DoubleMatrix2D

when I try 

gcj -c jung-1.5.jar -o jung-1.5.o


I am trying things like... 

gcj -c jung-1.5.jar -o jung-1.5.o --classpath=colt-1.2.0.zip

But to no avail.


I notice ant-1.5.2.jar under /usr/share/java/ on my fedora2 linux distro.

Is there a way I can compile colt into .class files using the build.xml
when I unzip the colt archive?


I think jung needs colt .class files, but I see...

gcj -C colt-1.2.0.zip
gcj: warning: already-compiled .class files ignored with -C
gcj: no input files


I repeat that I am very inexperienced.

Any help aimed at a beginner would be appreciated.

All the best,
Dan.