From: David Michel <dmichel76@googlemail.com>
To: java@gcc.gnu.org
Subject: How to convert a jar into so file and use it ?
Date: Wed, 10 Jun 2009 09:40:00 -0000 [thread overview]
Message-ID: <b5bf7a380906100239j478ed915scee4a008fd44e201@mail.gmail.com> (raw)
Hello,
I have a very simple java test code that uses a public method called
'coucou' of a external jar called 'Hello.jar' which contains the
package 'hello' and the public class 'Hello'. Here is the test code
Tool.java:
import hello.Hello;
public class Tool
{
public static void main(String[] args)
{
System.out.println("main program running");
Hello.coucou();
}
}
which I would usually compile, with the following commands:
$ gcj -O0 -g0 -C Tool.java --classpath=./:extern/Hello.jar
$ gij -cp .:extern/Hello.jar Tool
Now if I want to compile Tool.java natively with gcj, what do I need to do ?
I can create the shared library from the jar like this:
$ gcj -O0 -g0 -shared -findirect-dispatch -fjni -fPIC
extern/Hello.jar -o extern/Hello.jar.so
I can then compile Tool.java into Tool.o with:
$ gcj -O0 -g0 --classpath=./:extern/Hello.jar -c Tool.java -o Tool.o
(altough this is using the jar and not the so ??)
But then, I'm stuck with creating the final executable, i.e. Tool.out
Any clues ?
Cheers
David
next reply other threads:[~2009-06-10 9:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-10 9:40 David Michel [this message]
2009-06-10 10:16 ` Andrew Haley
2009-06-10 10:50 ` David Michel
2009-06-10 11:06 ` Andrew Haley
2009-06-10 11:53 ` Vaijayanthi Mala Suresh
2009-06-10 12:10 ` Andrew Haley
2009-06-10 12:23 ` David Michel
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