[Bug 227761] print/freetype2: Fonts aren't correctly rendered with 2.9

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227761

--- Comment #9 from lightside <lightside at gmx.com> ---
(In reply to Pascal Christen from comment #8)
> Any impact when applying this patch?
The disabled GPN port's option may disable FT_CONFIG_OPTION_POSTSCRIPT_NAMES
define in include/freetype/config/ftoption.h file:
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/include/freetype/config/ftoption.h?h=VER-2-9-1#n290
This may disable psnames module, which "is in charge of converting a glyph name
string into a Unicode value, or return a Macintosh standard glyph name for the
use with the TrueType `post' table" (from description of ftoption.h file):
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/modules.cfg?h=VER-2-9-1#n154
-8<--
# Support for PostScript glyph names.
#
# This module can be controlled in ftconfig.h
# (FT_CONFIG_OPTION_POSTSCRIPT_NAMES).
AUX_MODULES += psnames
-->8-
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/src/psnames/psmodule.c?h=VER-2-9-1#n47
etc.

If you need to just use ImageMagick convert (or other) program, then, as
intermediate solution, I may suggest to build libfreetype.so* without
FT_CONFIG_OPTION_POSTSCRIPT_NAMES define in include/freetype/config/ftoption.h
file and use LD_PRELOAD environment variable for needed program (while ABI is
compatible):
% env LD_PRELOAD=path/to/libfreetype.so convert file.pdf image.jpg

For example, apply patch for print/freetype2 in attachment #193012 (as you
already did, e.g. in some user's directory):
% svn co -r 468892 https://svn.FreeBSD.org/ports/head/print/freetype2
% fetch -o freetype2.diff
"https://bugs.freebsd.org/bugzilla/attachment.cgi?id=193012"
<..>
% cd freetype2
% svn patch ../freetype2.diff

Then build without GPN option and copy libfreetype.* files to another location:
% make WITHOUT=GPN stage
<..>
% ls work/stage/usr/local/lib/libfreetype*
work/stage/usr/local/lib/libfreetype.a         
work/stage/usr/local/lib/libfreetype.so.6
work/stage/usr/local/lib/libfreetype.so        
work/stage/usr/local/lib/libfreetype.so.6.16.1
% mkdir ../freetype2_libs
% cp -fp work/stage/usr/local/lib/libfreetype* ../freetype2_libs
% make clean
<..>

The ../freetype2_libs will contain needed libfreetype.so library (and related
files), in this case:
% cd ..
% fetch -o - "https://bugs.freebsd.org/bugzilla/attachment.cgi?id=193013" | tar
-xf - --include anonyme_visitenkarte.pdf
% env LD_PRELOAD=./freetype2_libs/libfreetype.so convert -append
anonyme_visitenkarte.pdf image.jpg

As for overall issue, the affected commit is
75cb071b3fbfa2315c5d458fee2bb465a14568ae (according to git bisect):
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=75cb071b3fbfa2315c5d458fee2bb465a14568ae

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