Re: compiling Classpath on cigwin/win

[Enrico Migliore]

Hi Mark,

> Hi Enrico,
>
> If you can figure out why jikes hangs, either by adding -verbose to the
> Makefile or by stracing or running it under gdb (if available under
> cygwin) that would be interesting.
>
>  
In order to understand why jikes hangs I did the following things:

1. added -verbose to the appropriate makefile
   
    Now, the command line issued by make contains     :... jikes 
-verbose...
    but Jikes hangs without printing anything on the standard output

2. recompiled jikes #defining the macro JIKES_DEBUG in the <config.h>
    file, in order to enable some debug messages.
   
    The build completes and I'm sure that JIKES_DEBUG does effect
    the program because if I issue "jikes -help" I can see the debug 
options
    which were not available, with the ordinary build.

    Jikes hangs without printing anything on the standard output

I think I should use the GDB debugger which works fine on my Cygwin or the
DDD debugger (which is a GUI based debugger)
I'll do that tomorrow.
   

> On Tue, 2006-01-03 at 09:41 +0100, Enrico Migliore wrote:
>  
>
> > The only one left is the Eclipse compiler. When I try:
> >
> >        ./configure --with-ecj
> >
> > the configure script tells me that "ecj is not found"
> > ECJ is a class, embedded in the following Eclipse plugin:
> >
> >         org.eclipse.jdt.core.compiler
> > **
> > and therefore is not an ordinary application.
> >
> > Can somebody tell me how to instruct the configure script
> > to use the ECJ compiler?
> >    
>
> On builder.classpath.org we bootstrap the ECJ compiler with GCJ. I am
> not 100% sure you can do this with an older gcj (builder uses gcc from
> cvs), but if you can try then this is what should work:
>
> cvs -d:pserver:address@hidden:/home/eclipse co \
>    org.eclipse.jdt.core
>
> cd org.eclipse.jdt.core
>
> find compiler batch -name \*.java | xargs gcj \
>    --main=org.eclipse.jdt.internal.compiler.batch.Main \
>    -Icompiler -Ibatch -o ecj
>
> Then you have a native ecj executable that can be used to bootstrap
> classpath.
>
>  
Ok, thanks for your suggestion. I'll try that too.

> > Has anybody ever successfully built GNU/Classpath on Cygwin?
> >    
>
> Yes in the past, but clearly none of the core developers are using
> cygwin regularly. So it has bitrotten a bit. Sorry and thanks for trying
> to get it working.
>
>  
I need a Windows build of Classpath, because I'm building JC (SableVM), 
which in turn,
needs Classpath to successfully build on Windows.

> Cheers,
>
> Mark
>  
ciao,
Enrico