bug#23753: 25.0.95; configuration of X client fails to include graphics libraries on Mac OS X 10.6.8

[charles@aurox.ch (Charles A. Roelli)]

> Date: Sun, 10 Dec 2017 22:42:25 +0000
> From: Alan Third <alan@idiocy.org>
> 
> On Sun, Dec 10, 2017 at 04:44:13PM -0500, Richard Stallman wrote:
> > [[[ To any NSA and FBI agents reading my email: please consider    ]]]
> > [[[ whether defending the US Constitution against all enemies,     ]]]
> > [[[ foreign or domestic, requires you to follow Snowden's example. ]]]
> > 
> >   > I would think removing this feature from the Emacs sources so that
> >   > they compile with standard gcc would be a high priority for Emacs.
> >   > It's surpising this has not come up before.
> > 
> > Yes, we must insist on removing them.
> 
> Is it acceptable to leave them in when building with Clang? Something like:
> 
> #ifdef __clang__
>  <block>
> #endif
> 
> > Are there any in the Emacs 26 pretest?
> 
> Yes, the two in macfont.m.
> 
> As for whether there’s any demand for them, I can’t answer that. It
> might be better to ask the GNUstep people.
> 
> Charles, do you know of a better solution than just making them
> in‐line?

Nope.  It would also be interesting to find out the performance impact
on redisplay.  Since the glyph information seems to be cached (?), the
impact may be negligible.