[Octave-bug-tracker] [bug #39823] build failure on systems with older freetype library

[Mike Miller]

URL:
  <http://savannah.gnu.org/bugs/?39823>

                 Summary: build failure on systems with older freetype library
                 Project: GNU Octave
            Submitted by: mtmiller
            Submitted on: Mon 19 Aug 2013 05:50:30 PM EDT
                Category: Configuration and Build System
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Build Failure
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

Recent changes added new calls to the freetype API that break on older
versions of libfreetype that used to work with Octave. AFAICT the only
offending call is FT_Reference_Face:


[...]
../../libinterp/corefcn/txt-eng-ft.h: In copy constructor
'ft_render::ft_font::ft_font(const ft_render::ft_font&)':
../../libinterp/corefcn/txt-eng-ft.h:136: error: 'FT_Reference_Face' was not
declared in this scope
../../libinterp/corefcn/txt-eng-ft.h: In member function 'ft_render::ft_font&
ft_render::ft_font::operator=(const ft_render::ft_font&)':
../../libinterp/corefcn/txt-eng-ft.h:155: error: 'FT_Reference_Face' was not
declared in this scope
[...]
../../libinterp/corefcn/txt-eng-ft.cc: In member function 'FT_FaceRec_*
ft_manager::do_get_font(const std::string&, const std::string&, const
std::string&, double)':
../../libinterp/corefcn/txt-eng-ft.cc:179: error: 'FT_Reference_Face' was not
declared in this scope


This needs additional checks in configure.ac for the new required
functionality and to disable building with freetype if the functions are not
found.

Even better would be if we could conditionally compile out whatever new
feature is using this call so we can still compile against an older freetype
library.




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