Re: [Xen-devel] dynamic libraries

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 23 Feb 2005, at 23:14, Adam Heath wrote:

> > Well, we have the functionality in the build system already; it just
> > isn't the default.
> > Where is it stated that dynamic libraries must be compiled -fPIC? They
> > contain
> > relocation info and so can be relocated wherever needed at run time.
> > Potentially
> > less efficient (library relocated to different addresses cannot have
> > its text pages
> > shared across processes) but I don't see why it is *disallowed*.
> >
> > If there's a suitably convincing explanation/reason then I will change
> > the default setting. :-)
> Well, it just doesn't work at all on amd64, as well as other arches.  
> It just
> happens to work on i386, so most people never notice it.
Okay, can we just build -fPIC for static libraries as well, or do they 
have to be non-PIC?
Building the libraries twice seems weird to me. :-)

Another option is not to bother building dynamic libraries but to 
statically link libxc and
libxutil. Avoids versioning problems and it's not like there's some big 
sharing win to
be had. Any strong opinions on this?

 -- Keir



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