From: Laurent Sansonetti <laurent.sansonetti@...>
Date: 2007-11-12T05:54:39+09:00
Subject: Re: Link errors for trunk on Mac OS X

On Nov 11, 2007 8:41 PM, Ryan Davis <ryand-ruby@zenspider.com> wrote:
>
>
> On Nov 10, 2007, at 13:43 , Lyle Johnson wrote:
>
> > Apologies in advance if this is a FAQ, but I'm trying to build the
> > trunk (for Ruby 1.9) on Mac OS X and it's failing to link miniruby:
> >
> >    /usr/bin/ld: multiple definitions of symbol _dln_find_exe
> >    dmydln.o definition of _dln_find_exe in section (__TEXT,__text)
> >    dln.o definition of _dln_find_exe in section (__TEXT,__text)
> >    ....
> >
> > I can see that both "dmydln.o" and "dln.o" are in the list of object
> > files passed to to the linker. Looking at the code, I think I see what
> > the author was going for and can probably work up a patch, but wanted
> > to confirm first that I wasn't just doing something wrong while trying
> > to build it.
>
> I just built trunk from clean yesterday on leopard and it seems to
> have worked fine.
>
> 508 % ./ruby19 -v
> ruby 1.9.0 (2007-11-09 patchlevel 0) [i686-darwin9.0.0]
>
> Just make sure you do a make realclean first.
>

I also reproduce on my Leopard box, even after a clean.

It seems that miniruby links against both mydln.o and dln.o, which
contain the same symbols.  Maybe the linker is less sensible on other
platforms. This seems to have been introduced by a recent Makefile.in
change (maybe the prelude stuff?).

Laurent