[fpc-devel] shared libraries on x86_64 Linux ?

[Dominique Leducq]

> -----Message d'origine-----
> De : Florian Klaempfl [mailto:florian at freepascal.org]
> Envoyé : lundi 22 mai 2006 19:56
> À : dleducq at magellan-ing.fr; FPC developers' list
> Objet : Re: [fpc-devel] shared libraries on x86_64 Linux ?
> 
> Dominique Leducq wrote:
> > Hello,
> >
> > I'm new to this list (and to Free Pascal...)
> >
> > What are the news from bug #6618 (ex 4733), on building shared libraries
> on a x86_64 architecture?
> > http://www.freepascal.org/mantis/view.php?id=6618
> >
> > I did some tests, and it seems to bee still present in 2.0.2 and current
> 2.1.1 snapshot (I encountered no problems with i386).
> > In the BTS I see that the status is still new,open, and there seems to
> have been no activity on this bug since its submission.
> >
> > I also had a look at the thread "Hitting bug 4733" on this list
> > http://lists.freepascal.org/lists/fpc-devel/2006-April/007514.html
> > and to
> http://community.freepascal.org:10000/bboards/message?message_id=152498&fo
> rum_id=24083
> > in the forums (AMD64 shared library link problem)
> >
> > Has anybody had a look at it?
> > If yes, does it seem to be hard to fix?
> 
> The problem is that we don't want to compile the default rtl with PIC.
> 
> > Is it the PIC generation that is broken for x86_64?
> 
> Afaik not.
> 
> > Please tell me if there are any plans on the matter. I'm quite willing
> to help, but would appreciate a little help...
> 
> You simply need to rebuild the rtl with PIC.
[Dominique Leducq] 

Well, I already tried that with 2.0.2 : make rtl "OPT=-Cg" (is that right ?), but it didn't work (yes, I checked that the right system unit was used by the linker)
I will try again with 2.1.1

I had nothing to recompile to make it work with i386 linux: is the default RTL compiled with PIC for i386? If so, why not for x86_64? I know that there are performances losses with PIC, but I thought that this losses where lessened with x86_64 arch?
> 
> >
> > Thanks a lot,
> >
> > Dominique Leducq
> >
> >
> >
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> >