linking issue on basic example

[Julien Guyon]

Working on Freebsd 4.7, with  CLASSPATH = . , I m not able to make this 
simple example run...

# cat Hello.java
import hello2.*;
import java.io.*;
public class Hello {
  public Hello() {    System.out.println("My hello classprog");  }
  public static void main(String args[]) {
    Hello hello = new Hello();
    Hello2 hello2 = new Hello2();
  }
}
# cat hello2/Hello2.java
package hello2;
import java.io.* ;
public class Hello2 {
  public Hello2() {    System.out.println("My hello2 class prog");  }
}

# gcj -C Hello.java; gij Hello
My hello classprog
My hello2 class prog
=====> OK and also with javac/jikes and java

but  
#../bin/gcj --main=Hello -pthread -o hy Hello.java
/var/tmp//cc4QNRPg.o: In function 
`Hello::main(JArray<java::lang::String*>*)':
/var/tmp//cc4QNRPg.o(.text+0xb2): undefined reference to `Hello2::class$'
/var/tmp//cc4QNRPg.o(.text+0xc5): undefined reference to 
`Hello2::Hello2[in-charge]()'
collect2: ld returned 1 exit status

Maybe usefull to help me:
# gcj -v
Reading specs from 
/home/julien/TOOLS/GCJ/lib/gcc-lib/i386-unknown-freebsd4.7/3.2.2/specs
Reading specs from 
/home/julien/TOOLS/GCJ/lib/gcc-lib/i386-unknown-freebsd4.7/3.2.2/../../../libgcj.spec
rename spec lib to liborig
Configured with: ../gcc/configure --enable-threads=posix 
--prefix=/home/julien/TOOLS/GCJ --enable-shared --enable-languages=c++,java
Thread model: posix
gcc version 3.2.2

GNU ld version 2.12.1 [FreeBSD] 2002-07-20

Any ideas ??