Re: Fw: [Nemiver-list] configure option --enable-symvis unrecognised

[Paul Fotheringham <paul fotheringham crocodile-clips com>]

Dodji Seketeli wrote:
> Here is my reply to Paul Fotheringham's email that I forwarded earlier.
>
> ----- Message Transféré -----
>
> Date: Thu, 21 May 2009 22:45:58 +0200
> De: Dodji Seketeli <dodji seketeli org>
> À: Paul Fotheringham <paul fotheringham crocodile-clips com>
> Cc: nemiver-list gna org
> Sujet: Re: [Nemiver-list] configure option --enable-symvis unrecognised
>
>
> Hello Paul,
>
> Paul Fotheringham <paul fotheringham crocodile-clips com> wrote:
>
> > I've been using nemiver for a while now on a large Qt project and it 
> > works really well. Thanks guys!
>
> You are welcome :)
>
> > I wanted to see what this option did so I tried enabling with 
> > --enable-symvis=yes as suggested by the configure script itself but
> > then why I try to configure it says
> >
> > WARNING: unrecognized options: --enable-symvis
>
> Ah, ooops. That's a typo in the help message as displayed
> by ./configure --help. It should be configure --enable-symsvis. Note
> the 's' after "sym". I have fixed that in the master branch of our git
> repository. It'll be available in the next release.
>
> > What does this option do and is just not supported yet?
>
> The symbol visibility configure switch triggers a set of
> gcc compile time options used to reduce binaries size and have fast
> executable loading. It basically hides most of the ELF symbols which
> would have otherwise been unnecesarily public. You can learn more about
> the set of options by reading http://gcc.gnu.org/wiki/Visibility.
>  
> It's disabled by default because at some point in time, some distros
> had problems with it. I have just tried it on Fedora 10 and it
> works. I don't know the state of things on other distros, to be honest.
> FWIW, last time I tried on Debian, it was working.
>
> Thanks.

Thanks for the reply Dodji. Sorry about posting to the wrong list, I 
completely forgot it had moved earlier this year!

As regards the --enable-symsvis option I realise that I was once again 
being silly. For some reason I thought it was enabling an option within 
nemiver that had something to do with whether variables in the 
executable being debugged were hidden or visible and I couldn't think 
what that would be. I now realise from your reply that it is simply an 
option for nemiver's own symbols! lol.

Regards

Paul Fotheringham
Software Developer

Crocodile Clips Ltd.
43 Queensferry Street Lane, Edinburgh, EH2 4PF
Registration No: 167331, Scotland

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