> 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?