Re: Announcing FreeType 2.10.3

[Chris Liddell]

On 12/10/2020 17:47, Alexei Podtelezhnikov wrote:
> 
>     > So, we've had a report that building Ghostscript against Freetype
>     > 2.10.3 fails because FT_CALLBACK_DEF() has been moved to internal
>     > use only.
>     >
>     > Ghostcript supplies callbacks for memory management
>     > (i.e. FT_MemoryRec) and we used FT_CALLBACK_DEF() for those, which
>     > seemed logical when defining callbacks!
> 
>     Looks like an oversight to make it internal.  Fact is that this macro
>     is not publicly documented...
> 
> 
> The internal description suggests that this is a placeholder for
> __attribute__((fastcall)) and __atribute__((cdecl)), which we do not use
> ourselves.
> 
>     > Is there now an alternative way to do that?  Or should we just
>     > switch to explicitly declaring them static?
> 
> 
> Would ghostscript like to use those attributes?

I don't see any compelling reason for us to do so.

As I said, I'm quite happy just changing our callbacks to be directly
declared static functions. I just want to check that's what's intended,
and that there isn't a replacement for/alternative to FT_CALLBACK_DEF()
that we should be using.