[Ffmpeg-devel] [patch] gcc4 visibility support

Erik Slagter erik
Wed Jun 7 11:45:17 CEST 2006

On Fri, 2006-06-02 at 18:45 +0200, Diego 'Flameeyes' Petten? wrote:

[ ... ]

> When hiding symbols, the entry points in the libraries are removed, the 
> symbols are not visible by outside, so for a start VLC can't declare two 
> externs with the name of the mpeg4 matrix tables and use them if they are not 
> exported by the library. This brings a development upside: you have control 
> on the symbols you export, if some software is relying on the internal 
> variables and structures, it's cut off, it avoids mysterious crashes due to 
> change in ABI of internal functions.

[ ... ]

At the risk of talking utterly non-sense: in what respect does this
concept differ from declaring a symbol static or non-static?
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