Re: Executing Gcj-SWT native code fails

[krimo <aait at free dot fr>]

Jakob Praher a écrit :

> Am Montag, den 17.01.2005, 14:31 +0100 schrieb krimo:
>  
>
> > Jakob Praher a écrit :
> >
> >    
> >
> > > Am Montag, den 17.01.2005, 13:08 +0100 schrieb krimo:
> > >
> > >
> > >      
> > >
> > > > Hi guys,
> > > >
> > > >        
>
>  
>
> > I'm using librairies included in the swingwt debian package and I 
> > suppose that the -fjni flag is set.
> > I also tried to compile swingwt 0.85 myself (I verified the Makefile and 
> > the -fjni flag is set) to get
> > libswt compiled with -fjni. Unfortunately, libswt is linked with 
> > libswt-mozilla-gtk-3063.so that contains unresolved symbols:
> > /tmp/SwingWT/lib/linux_gtk2/libswt-mozilla-gtk-3063.so: undefined 
> > reference to `nsCString::nsCString[in-charge]()'
> > /tmp/SwingWT/lib/linux_gtk2/libswt-mozilla-gtk-3063.so: undefined 
> > reference to `vtable for nsQueryInterface'
> > /tmp/SwingWT/lib/linux_gtk2/libswt-mozilla-gtk-3063.so: undefined 
> > reference to `nsCString::nsCString[in-charge](char const*, int)'
> > /tmp/SwingWT/lib/linux_gtk2/libswt-mozilla-gtk-3063.so: undefined 
> > reference to `nsString::nsString[in-charge](unsigned short const*)'
> > /tmp/SwingWT/lib/linux_gtk2/libswt-mozilla-gtk-3063.so: undefined 
> > reference to `nsString::AssignWithConversion(char const*)'
> > /tmp/SwingWT/lib/linux_gtk2/libswt-mozilla-gtk-3063.so: undefined 
> > reference to `nsString::nsString[in-charge]()'
> > I didn't set the LD_LIBRARY_PATH. At All, I don't have any errors or 
> > warnings
> >    
>
> you need to have libxpcom.so on your library search path or in
> LD_LIBRARY_PATH
> I've mine in /usr/lib/libxpcom.so which is provided by mozilla-browser.
> firefox includes it in /usr/lib/mozilla-firefox/libxpcom.so, that might
> be a reason why the system doesn't find the shared object.
>
>  
>
> > Here is an example of the execution with a System.out.println("Hello"); 
> > added just after shell.open();:
> >
> > hostname:/home/me/projects/GUISWT# ./Test
> > Hello
> >
> > and that's all... I got no errors or warnings at the compilation or 
> > execution steps, that's why I really don't understand...
> >
> > I'm using:
> > gcj both 3.4 & 3.3
> > libgcj4 required by libswt.so
> >
> >    
> that's pretty strange
> ltrace could give you some interesting insights. do you have recent gtk
> libs on your system (but I think thats fixed when you install the debian
> packages)
>
>  
Yes, my debian is up to date. I try using libgcj5 and I get now a null 
pointer exception:
Exception in thread "main" java.lang.NullPointerException
  at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.5.0.0)
  at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.5.0.0)
  at _Jv_AllocObjectNoFinalizer (/usr/lib/libgcj.so.5.0.0)
  at Test.main(java.lang.String[]) (Unknown Source)

Very strange, for a simple example...