GCJ - undefined reference

[Andrew Haley]

Jerome Benezech writes:
 > I am using GCJ 4.2.0 to compile my java app into a
 > win32 exe. My app uses external jars like log4j. I use
 > the makefile built by eclipse plugin GCJBuilder.
 > 
 > So the external libraries have been compiled into .o
 > object files as well as all my java classes. During
 > the compiling/linking (??) process, I get these
 > "undefined reference" errors from external jars
 > classes like log4J but also from my own java classes. 
 > 
 > Any help would be greatly appreciated.
 > An error from the external jar:
 > 
 > C:/MesDocuments/_dev/CocoonWorkspace/Compilation/org/apache/log4j/config/PropertyPrinter.java:113:
 > undefined reference to
 > `_ZN4java3awt9Component18firePropertyChangeEJvPNS_4lang6StringEff'

java.awt.Component.firePropertyChange(java.lang.String, float, float)void 
is a Java 1.5 method.  It's in the gcc 4.2 branch, not the 4.1 branch.

 > An error from one of my own class:
 > 
 > 
 > C:/MesDocuments/_dev/CocoonWorkspace/Compilation/cafe/AdCafeProperties.java:272:
 > undefined reference to `cafe::AdCafeException::class$'

Not sure about that.  It certainly should be there: I'd use nm to
inspect cafe/AdCafeException.o.

Andrew.