help on fucntion visibility

[Artūras Moskvinas]

> 
> I know that the current version gcc supports function visibility
> attributes, yet some of the previous versions does not. 
> 
> Could any one kindly tell since which version is visibility attribute
> supported by gcc? So that I will be able to write some conditional
> macros definition code to make things more flexible? 
> 
> The macro definition is supposed to be something like:
> #if ((__GNUC__ *100 +__GNUC_MINOR__) >= 303)
> #define G_GNUC_INTERNAL __attribute__((visibility("hidden")))
> #else
> #define G_GNUC_INTERNAL
> #endif
> 
Look at this wiki entry for checking visibility(a macros is already
there...):
http://gcc.gnu.org/wiki/Visibility

And by reading manual, you will find, that visibility attribute appeared
in 3.3 release (earlier compiler do not have this option documented in
manual)


Arturas M.