Re: PATCH: PR ld/3223: ld fails to link correct variables from linker script

[Alan Modra <amodra at bigpond dot net dot au>]

On Tue, Sep 26, 2006 at 06:54:14AM -0700, H. J. Lu wrote:
> On Tue, Sep 26, 2006 at 08:11:57PM +0930, Alan Modra wrote:
> > I think it is quite reasonable to remove empty output sections, even
> > those used to define symbols via the linker script (the symbols
> > become absolute).  The case for ignoring linker script VMA and LMA
> > assignments isn't so strong, particularly since doing so can affect
> > following sections.  I think it would be safest if we went back to
> > always obeying them, even for ALIGN expressions.  Alternatively, we
> > could completely ignore the VMA and LMA assignments on empty output
> > sections.  I agree that the current situation, where we take note of
> > the VMA only within the section, is silly.
> 
> Obey ALIGN expressions on empty output sections will break x86-64. I
> noticed that when I was building glibc on x86-64.

How does it break, and why?  If you were using an older linker that
didn't remove empty output sections, then of course the linker would
obey the ALIGN expression in a section VMA.

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre