Converting a JAR into a gcj-statically-linked SO

Tue Jan 8 17:58:00 GMT 2008

Andrew Haley wrote:
> David Daney writes:
> > Matthijs van de Water wrote:
> > > On Jan 7, 2008 2:42 PM, Andrew Haley <aph@redhat.com> wrote:
> > > 
> > >> You don't seem to be linking your shared library statically against
> > >> libgcj. You must use the -static-libgcj option.
> > >> 
> > > Changing my compile line into
> > > $ gcj -o libmynative.so -shared -fPIC native_lib.cc MyJavaLib.o
> > > -lstdc++ -shared-libgcc -static-libgcj
> > > 
> > 
> > That won't work. The static libgcj (libgcj.a) is not compiled with
> > -fPIC, so it cannot be used in a shared object.
>> Are you sure? 
Yes. Confirmed by examining disassembly of a recent mipsel-linux trunk
build.
> I thought we changed it so that it was, ages ago. It
> really ought to be: it'd halve the time to build libgcj and it'd make
> this kind of thing possible.
>PIC code is less 'efficient', I like the fact that I get more efficient
code when using -static-libgcj
David Daney