GNU bug report logs - #28236
'configure --with-cairo' causes 'emacs -font' to fail

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Package: emacs;

Reported by: andrei.elkin <at> pp.inet.fi

Date: Fri, 25 Aug 2017 20:00:02 UTC

Severity: normal

Tags: help

Done: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>

Bug is archived. No further changes may be made.

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Message #28 received at 28236 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Robert Pluim <rpluim <at> gmail.com>
Cc: 28236 <at> debbugs.gnu.org, ari.roponen <at> gmail.com, andrei.elkin <at> pp.inet.fi,
 dgutov <at> yandex.ru
Subject: Re: bug#28236: 'configure --with-cairo' causes 'emacs -font' to fail
Date: Wed, 12 Dec 2018 18:37:46 +0200

> From: Robert Pluim <rpluim <at> gmail.com>
> Cc: Ari Roponen <ari.roponen <at> gmail.com>,  28236 <at> debbugs.gnu.org,  andrei.elkin <at> pp.inet.fi,  dgutov <at> yandex.ru
> Date: Wed, 12 Dec 2018 16:41:52 +0100
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > So you are saying that the problem here is that Cairo can only work
> > with fonts known fontconfig, and cannot switch to font backend(s) that
> > bypass fontconfig?  If so, perhaps just an entry in PROBLEMS with the
> > above recipe would suffice as a workaround?
> 
> I find that surprising. The non-Cairo GTK build can use Xft and X font
> backends, what's different about Cairo?
> 
> (I just tried to set font-backend to '(ftcr x) on my Cairo build, and
> failed, so perhaps it really isnĘžt supported).

I'm guessing that the other font backends use X calls that cannot be
supported with Cairo drawing, or maybe such support simply wasn't
coded yet.  But I'm not an expert on this stuff, so maybe I'm wrong.
This bug report was last modified 6 years and 63 days ago.

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