newbie: compiling/linking

[Dhek Bhun Kho <bhun at chello dot nl>]

Hi 

Okay, I've got like a probably very stupid question, but I can't figure
it out by reading the gcc-manuals and googling: 

If I compile ant using this (in the directory with all the libs): 

gcj --main=org.apache.tools.ant.Main -o ant lib-org-apache-tools.so
lib-org-apache-bcel.so lib-javax-xml-transform.so
lib-javax-xml-parsers.so lib-org-apache-regexp.so 
lib-org-apache-xerces.so lib-org-w3c-dom.so lib-org-apache-xml.so
lib-org-apache-xalan.so lib-org-apache-xpath.so lib-java_cup.so 

Then I will get the duplicate class problem. 

If I use this (int the same lib directory): 
gcj -o ant -L. -l-javax-xml-parsers --main=org.apache.tools.ant.Main
-l-org-apache-tools -l-org-apache-bcel -l-javax-xml-transform
-l-org-apache-regexp

Then no problem occurs, and I can run ant (Just still some problem with
the dateformat thing,gives me a huge stacktrace, it's fixable by hacking
the code, but there must be some other way). Can somebody please explain
the difference between the two? I really don't understand this. I'd like
to know the details behind this instead of using the second form just
because it works. 

I'd very much appreciate some help on this.