Question about compiling .jar files?

Sat Nov 27 11:49:00 GMT 2004

Dan Bolser writes:
 > 
 > 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.
What is inside colt-1.2.0.zip? class files, source files?
Somewhow you need colt-1.2.0.jar, which you can create with "jar cf".
Andrew.