Re: [ft-devel] On the impact of installing the next FreeType release on a typical Unix distribution

[david turner]

George Williams a écrit :
> On Wed, 2006-02-15 at 17:31, Werner LEMBERG wrote:
>   
> > > - do the required modifications, encapsulating each of the "old"
> > >   internals in a configuration macro
> > >   (e.g. FT_CONFIG_OPTION_OLD_INTERNALS)
> > >       
>
>   
> > Sounds good.  We should mention in the docs that these steps are
> > performed only *once*, and that we are not going to maintain those
> > hacks.
> >     
> As the author of a rogue client for which no patch is contemplated (and
> for which we decided last year that there was no good way to provide a
> patch) I must beg that
>         TT_RunIns
> remain reachable.
>
> FontForge will work without it, but the debugger will be gone...
>
>
>   
George, FontForge relies on a build of freetype that has the bytecode 
interpreter enabled.
Moreover, you also #include our own source code (i.e. header files that 
were not even exposed
by our 'make install' anyway), which means the most internal things 
within the font engine, even
those that should normally never be seen by rogue clients.

Just keeping TT_RunIns reachable is not enough, we must also prevent 
modifications of many
internal structures of the TrueType driver and interpreter that you're 
relying on.

It'd be much better if you could find a way to embedded the FreeType 
functionality within
the FontForge sources directly, instead on relying on something so fragile.

Please understand that we don't want to maintain _that_ level of 
backwards compatibility.

Regards,

- David Turner
- The FreeType Project  (www.freetype.org)

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