Build Linux shared library from DMD

[JFD]

== Quote from Jacob Carlborg (doob at me.com)'s article
> On 2010-11-10 20:12, Steve Teale wrote:
> > In the Apache mod_d thread I saw:
> >
> > gcc -shared -Wl,-soname,libhello.so.0 -o libhello.so.0.0 libhello.a
> >
> > Has anyone tried this with libphobos2.a?
> Phobos cannot currently be used as a dynamic library. DMD cannot produce
> correct PIC for building dynamic libraries.

GDC can build shared library (phobos works, too), but currently not DMD, it seems.
 Please see that other thread for more details.