[DVDnav-discuss] [RFC] Adding ELF visibility support?

[Nico Sabbi]

Il Tuesday 08 January 2008 12:55:13 Diego 'Flameeyes' Pettenò ha 
scritto:
> I was wondering if people were interested in getting ELF visibility
> support into libdvdnav. The idea of using ELF visibility is that
> internal non-static functions can be hidden from the ELF, not
> exporting them anymore to the users of the library. It's an ABI
> change (so the soname should be changed), but then it allows you to
> change the ABI of the internal functions without being concerned if
> that might break frontends using internal symbols.
>
> Hidden visibility also makes the library load faster and work
> faster too (as the symbols don't need to be resolved at runtime),
> and avoids interposing (symbols' collision).
>
> And as an extra, you won't get symbol collisions between libdvdnav
> and libdvdread when libdvdnav is built with the internal copy of
> libdvdread (because the libdvdread-provided symbols wouldn't be
> exported).
>
> If you want, I can prepare a patch to add tests and headers for
> hidden visibility.

post a patch, please