Compiling for multiple Linux distros

Mon Mar 17 13:22:00 GMT 2008

Hi Andrew,
The test case I was using was SWT's hello world snippet so it's quite small:
public class SWT {
 public static void main (String [] args) {
 Display display = new Display ();
 Shell shell = new Shell(display);
 shell.open ();
 while (!shell.isDisposed ()) {
 if (!display.readAndDispatch ()) display.sleep ();
 }
 display.dispose ();
 }
}
Hope this helps,
Donal
Andrew Haley wrote:
> Donal Riordan wrote:
>>> Hi, sorry to re-open this problem but compiling SWT applications for
>> multiple distros is proving troublesome.
>>>> For my test case I'm trying to compile a simple 'hello world' swt app on
>> Ubuntu and have the executable run on a fresh Fedora installation (it's
>> a vm-ware image in case that matters).
>>>> On Ubuntu I compile the libswt.a library using:
>> gcj -c -findirect-dispatch -fjni swt.jar -o libswt.a
>> and then compile my application using:
>> gcj -fjni -findirect-dispatch -classpath swt.jar --main=SWT SWT.java -o
>> swt-ubuntu -L. -Wl,--no-whole-archive -lswt
>>>> The resultant executable works fine in Ubuntu but when I try to execute
>> it in Fedora I get libgcj linking problems again:
>> error while loading shared libraries: libgcj.so.81: cannot open shared
>> object file: No such file or directory
>>>> I've been able to compile non-SWT programs in Ubuntu such that they run
>> correctly on Fedora - I only encounter this problem when I try to use SWT.
>>>> Well, I could debug it but I don't have the code, so either you'll have to
> produce a small (very small) test case that demonstrates the problem, or
> you'll have to debug it yourself. Clearly, someone is retaining a hard
> link against libgcj, but I don't know which file it is.
>> Andrew.
>>