Re: [PATCH] gnu: Add Xft support to FLTK.

[iyzsong@member.fsf.org (宋文武)]

Kei Yamashita <kei@openmailbox.org> writes:

> On Wed, 27 Apr 2016 14:52:36 +0200
> ludo@gnu.org (Ludovic Courtès) wrote:
>
>> Kei Yamashita <kei@openmailbox.org> skribis:
>> 
>> > This patch is in preparation for the Dillo browser package.
>> >
>> > From 7755ae6d7afd46daed5fac1e626d1785b9875975 Mon Sep 17 00:00:00
>> > 2001 From: Kei Yamashita <kei@openmailbox.org>
>> > Date: Sat, 16 Apr 2016 22:45:21 -0400
>> > Subject: [PATCH] gnu: Add Xft support to FLTK.
>> >
>> > * gnu/packages/fltk.scm (fltk)[inputs]: Add libxft.  
>> 
>> This appears to break Octave (see
>> <https://hydra.gnu.org/log/gx7z8zd3x113605gpnjp6adx98qwy9fy-octave-4.0.0>):
>> 
>> --8<---------------cut here---------------start------------->8---
>> ../run-octave  --norc --silent --no-history ./fntests.m .
>> error:
>> /tmp/guix-build-octave-4.0.0.drv-0/octave-4.0.0/libinterp/dldfcn/PKG_ADD:
>> /tmp/guix-build-octave-4.0.0.drv-0/octave-4.0.0/libinterp/dldfcn/__init_fltk__.oct:
>> failed to
>> load: /gnu/store/nfi0na44lk0fy0m6bpsa7q458wpyd5w5-fltk-1.3.3/lib/libfltk_gl.so.1.3:
>> undefined symbol: _ZN18Fl_XFont_On_Demand5valueEv
>> --8<---------------cut here---------------end--------------->8---
>> 
>> The undefined symbol (demangled: ‘Fl_XFont_On_Demand::value’) is
>> defined in Fltk’s ‘fl_font_xft.cxx’.  However, looking at the build
>> log of Fltk, this file is apparently not compiled, which sounds like
>> a bug in Fltk’s build system.

Fixed (octave) in commit 6fdc73e by apply patch from:

<http://www.fltk.org/str.php?L3156+P0+S0+C0+I0+E0+V1+QOn_Demand>.