[PATCH] GNU LD option export-dynamic can accept single dash flag

[Rui Ueyama]

On Mon, Jan 19, 2015 at 1:20 PM, Joerg Sonnenberger <joerg at britannica.bec.de
> wrote:

> On Mon, Jan 19, 2015 at 03:57:50PM -0500, Ed Maste wrote:
> > On 19 January 2015 at 11:32, Joerg Sonnenberger <joerg at britannica.bec.de>
> wrote:
> > > On Sun, Jan 18, 2015 at 10:28:27PM +0000, Davide Italiano wrote:
> > >> Some Makefiles on FreeBSD use -export-dynamic rather than
> --export-dynamic.
> > >> We're gonna patch them in the FreeBSD tree, but as long as this is
> > >> supposed to be a drop-in replacement for GNU ld, I think supporting
> > >> single dash flag is fine.
> > >
> > > I dislike this for the overlap with the -e option.
> >
> > It is unfortunate, but necessary if we want to aim for full GNU ld
> > compatibility. Do we chase down various ld consumers and convince them
> > to switch to --?
>
> I've seen existing bugs around -export-dynamic with typos and the like,
> so personally, I would prefer to handle it as error. In short: yes.
>

I think my preference is opposite. Trying to make an "improvement" over GNU
command line options would end up with a linker which is not fully
compatible with GNU. I think that would cause confusion. I want it to be a
drop-in replacement that just works.

If we really want to ban -export-dynamic, we should convince GNU to not
accept that option (or warn on that at least), maybe?


> Joerg
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