Re: [jnc-users] Need help setting up JNC to run simple HelloWorld

[Marco T. <mt...@gm...>]

Spring Heart wrote:
> I use JNC 1.1.1 on windows with gcc-122233-lin (~280Megs folder) 
> downloaded from JNC website several days ago. My OS is WinXP SP2 and I 
> had a problem while compiling my simple Helloworld code to run on 
> Linux as below.
>  
> class HelloWorld
> { 
>         public static void main(String args[])
>         {
>            System.out.println("Hello World!");
>         }
> }

So it's HelloWorld.java or HelloWorld.class, right?

> The Compiler returns this error message.
>  
> creating "Hello.so" for Linux

Why "Hello.so"? .so is a shared lib, you're creating a binary. But this 
has nothing to do with your problem.

> - main compilation step
>  [C:\NativeCompiler\gcc-122233-lin\gcc-122233-lin\bin\gcj
>   --main=HeloWorld

What now? HeloWorld.java? This has to be HelloWorld.

>   -fjni
>   -Djava.library.path=lib
>   -Dsun.java2d.fontpath=
>   -Djava.home=.
>   -Djava.awt.graphicsenv=sun.awt.X11GraphicsEnvironment

You can exclude AWT/Swing, you don't need it for that simple 
application. But again, this has nothing to do with your problem.

>   -Llibs/lin
>   -Ilibs/lin/gui/gui.jar
>   -oC:\NativeCompiler\JavaNativeCompiler-1.1.1\Hello.so
>   -s
>   -O2
>   -IC:\NativeCompiler  @C:\DOCUME~1\user\LOCALS~1\Temp\JNCTempbvr71c.out\SourceListbvr71d.list]
>  C:\DOCUME~1\user\LOCALS~1\Temp/ccY9caaa.o: In function 
> `main':cc0Ecaaa.i:(.text+0x29): undefined reference to `HeloWorld::class$$'

Here again, you're compiling HelloWorld but specify HeloWorld as main class.


Hope that helps...
Marco