/****************************************************************************
 *
 * ftoption.h
 *
 *   User-selectable configuration macros (specification only).
 *
 * Copyright (C) 1996-2022 by
 * David Turner, Robert Wilhelm, and Werner Lemberg.
 *
 * This file is part of the FreeType project, and may only be used,
 * modified, and distributed under the terms of the FreeType project
 * license, LICENSE.TXT.  By continuing to use, modify, or distribute
 * this file you indicate that you have read the license and
 * understand and accept it fully.
 *
 */


#ifndef FTOPTION_H_
#define FTOPTION_H_


#include <ft2build.h>


FT_BEGIN_HEADER

/**************************************************************************
 *
 *                USER-SELECTABLE CONFIGURATION MACROS
 *
 * This file contains the default configuration macro definitions for a
 * standard build of the FreeType library.  There are three ways to use
 * this file to build project-specific versions of the library:
 *
 * - You can modify this file by hand, but this is not recommended in
 *   cases where you would like to build several versions of the library
 *   from a single source directory.
 *
 * - You can put a copy of this file in your build directory, more
 *   precisely in `$BUILD/freetype/config/ftoption.h`, where `$BUILD` is
 *   the name of a directory that is included _before_ the FreeType include
 *   path during compilation.
 *
 *   The default FreeType Makefiles use the build directory
 *   `builds/<system>` by default, but you can easily change that for your
 *   own projects.
 *
 * - Copy the file <ft2build.h> to `$BUILD/ft2build.h` and modify it
 *   slightly to pre-define the macro `FT_CONFIG_OPTIONS_H` used to locate
 *   this file during the build.  For example,
 *
 *   ```
 *     #define FT_CONFIG_OPTIONS_H  <myftoptions.h>
 *     #include <freetype/config/ftheader.h>
 *   ```
 *
 *   will use `$BUILD/myftoptions.h` instead of this file for macro
 *   definitions.
 *
 *   Note also that you can similarly pre-define the macro
 *   `FT_CONFIG_MODULES_H` used to locate the file listing of the modules
 *   that are statically linked to the library at compile time.  By
 *   default, this file is `<freetype/config/ftmodule.h>`.
 *
 * We highly recommend using the third method whenever possible.
 *
 */


/*************************************************************************/
/*************************************************************************/
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/*#************************************************************************
 *
 * If you enable this configuration option, FreeType recognizes an
 * environment variable called `FREETYPE_PROPERTIES`, which can be used to
 * control the various font drivers and modules.  The controllable
 * properties are listed in the section @properties.
 *
 * You have to undefine this configuration option on platforms that lack
 * the concept of environment variables (and thus don't have the `getenv`
 * function), for example Windows CE.
 *
 * `FREETYPE_PROPERTIES` has the following syntax form (broken here into
 * multiple lines for better readability).
 *
 * ```
 *   <optional whitespace>
 *   <module-name1> ':'
 *   <property-name1> '=' <property-value1>
 *   <whitespace>
 *   <module-name2> ':'
 *   <property-name2> '=' <property-value2>
 *   ...
 * ```
 *
 * Example:
 *
 * ```
 *   FREETYPE_PROPERTIES=truetype:interpreter-version=35 \
 *                       cff:no-stem-darkening=1
 * ```
 *
 */
#define FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES


/**************************************************************************
 *
 * Uncomment the line below if you want to activate LCD rendering
 * technology similar to ClearType in this build of the library.  This
 * technology triples the resolution in the direction color subpixels.  To
 * mitigate color fringes inherent to this technology, you also need to
 * explicitly set up LCD filtering.
 *
 * When this macro is not defined, FreeType offers alternative LCD
 * rendering technology that produces excellent output.
 */
/* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */


/**************************************************************************
 *
 * Many compilers provide a non-ANSI 64-bit data type that can be used by
 * FreeType to speed up some computations.  However, this will create some
 * problems when compiling the library in strict ANSI mode.
 *
 * For this reason, the use of 64-bit integers is normally disabled when
 * the `__STDC__` macro is defined.  You can however disable this by
 * defining the macro `FT_CONFIG_OPTION_FORCE_INT64` here.
 *
 * For most compilers, this will only create compilation warnings when
 * building the library.
 *
 * ObNote: The compiler-specific 64-bit integers are detected in the
 *         file `ftconfig.h` either statically or through the `configure`
 *         script on supported platforms.
 */
#undef FT_CONFIG_OPTION_FORCE_INT64


/**************************************************************************
 *
 * If this macro is defined, do not try to use an assembler version of
 * performance-critical functions (e.g., @FT_MulFix).  You should only do
 * that to verify that the assembler function works properly, or to execute
 * benchmark tests of the various implementations.
 */
/* #define FT_CONFIG_OPTION_NO_ASSEMBLER */


/**************************************************************************
 *
 * If this macro is defined, try to use an inlined assembler version of the
 * @FT_MulFix function, which is a 'hotspot' when loading and hinting
 * glyphs, and which should be executed as fast as possible.
 *
 * Note that if your compiler or CPU is not supported, this will default to
 * the standard and portable implementation found in `ftcalc.c`.
 */
#define FT_CONFIG_OPTION_INLINE_MULFIX


/**************************************************************************
 *
 * LZW-compressed file support.
 *
 *   FreeType now handles font files that have been compressed with the
 *   `compress` program.  This is mostly used to parse many of the PCF
 *   files that come with various X11 distributions.  The implementation
 *   uses NetBSD's `zopen` to partially uncompress the file on the fly (see
 *   `src/lzw/ftgzip.c`).
 *
 *   Define this macro if you want to enable this 'feature'.
 */
#define FT_CONFIG_OPTION_USE_LZW


/**************************************************************************
 *
 * Gzip-compressed file support.
 *
 *   FreeType now handles font files that have been compressed with the
 *   `gzip` program.  This is mostly used to parse many of the PCF files
 *   that come with XFree86.  The implementation uses 'zlib' to partially
 *   uncompress the file on the fly (see `src/gzip/ftgzip.c`).
 *
 *   Define this macro if you want to enable this 'feature'.  See also the
 *   macro `FT_CONFIG_OPTION_SYSTEM_ZLIB` below.
 */
#define FT_CONFIG_OPTION_USE_ZLIB


/**************************************************************************
 *
 * ZLib library selection
 *
 *   This macro is only used when `FT_CONFIG_OPTION_USE_ZLIB` is defined.
 *   It allows FreeType's 'ftgzip' component to link to the system's
 *   installation of the ZLib library.  This is useful on systems like
 *   Unix or VMS where it generally is already available.
 *
 *   If you let it undefined, the component will use its own copy of the
 *   zlib sources instead.  These have been modified to be included
 *   directly within the component and **not** export external function
 *   names.  This allows you to link any program with FreeType _and_ ZLib
 *   without linking conflicts.
 *
 *   Do not `#undef` this macro here since the build system might define
 *   it for certain configurations only.
 *
 *   If you use a build system like cmake or the `configure` script,
 *   options set by those programs have precedence, overwriting the value
 *   here with the configured one.
 *
 *   If you use the GNU make build system directly (that is, without the
 *   `configure` script) and you define this macro, you also have to pass
 *   `SYSTEM_ZLIB=yes` as an argument to make.
 */
/* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */


/**************************************************************************
 *
 * Bzip2-compressed file support.
 *
 *   FreeType now handles font files that have been compressed with the
 *   `bzip2` program.  This is mostly used to parse many of the PCF files
 *   that come with XFree86.  The implementation uses `libbz2` to partially
 *   uncompress the file on the fly (see `src/bzip2/ftbzip2.c`).  Contrary
 *   to gzip, bzip2 currently is not included and need to use the system
 *   available bzip2 implementation.
 *
 *   Define this macro if you want to enable this 'feature'.
 *
 *   If you use a build system like cmake or the `configure` script,
 *   options set by those programs have precedence, overwriting the value
 *   here with the configured one.
 */
/* #define FT_CONFIG_OPTION_USE_BZIP2 */


/**************************************************************************
 *
 * Define to disable the use of file stream functions and types, `FILE`,
 * `fopen`, etc.  Enables the use of smaller system libraries on embedded
 * systems that have multiple system libraries, some with or without file
 * stream support, in the cases where file stream support is not necessary
 * such as memory loading of font files.
 */
/* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */


/**************************************************************************
 *
 * PNG bitmap support.
 *
 *   FreeType now handles loading color bitmap glyphs in the PNG format.
 *   This requires help from the external libpng library.  Uncompressed
 *   color bitmaps do not need any external libraries and will be supported
 *   regardless of this configuration.
 *
 *   Define this macro if you want to enable this 'feature'.
 *
 *   If you use a build system like cmake or the `configure` script,
 *   options set by those programs have precedence, overwriting the value
 *   here with the configured one.
 */
/* #define FT_CONFIG_OPTION_USE_PNG */


/**************************************************************************
 *
 * HarfBuzz support.
 *
 *   FreeType uses the HarfBuzz library to improve auto-hinting of OpenType
 *   fonts.  If available, many glyphs not directly addressable by a font's
 *   character map will be hinted also.
 *
 *   Define this macro if you want to enable this 'feature'.
 *
 *   If you use a build system like cmake or the `configure` script,
 *   options set by those programs have precedence, overwriting the value
 *   here with the configured one.
 */
/* #define FT_CONFIG_OPTION_USE_HARFBUZZ */


/**************************************************************************
 *
 * Brotli support.
 *
 *   FreeType uses the Brotli library to provide support for decompressing
 *   WOFF2 streams.
 *
 *   Define this macro if you want to enable this 'feature'.
 *
 *   If you use a build system like cmake or the `configure` script,
 *   options set by those programs have precedence, overwriting the value
 *   here with the configured one.
 */
/* #define FT_CONFIG_OPTION_USE_BROTLI */


/**************************************************************************
 *
 * Glyph Postscript Names handling
 *
 *   By default, FreeType 2 is compiled with the 'psnames' module.  This
 *   module 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.
 *
 *   Undefine this macro if you do not want 'psnames' compiled in your
 *   build of FreeType.  This has the following effects:
 *
 *   - The TrueType driver will provide its own set of glyph names, if you
 *     build it to support postscript names in the TrueType 'post' table,
 *     but will not synthesize a missing Unicode charmap.
 *
 *   - The Type~1 driver will not be able to synthesize a Unicode charmap
 *     out of the glyphs found in the fonts.
 *
 *   You would normally undefine this configuration macro when building a
 *   version of FreeType that doesn't contain a Type~1 or CFF driver.
 */
#define FT_CONFIG_OPTION_POSTSCRIPT_NAMES


/**************************************************************************
 *
 * Postscript Names to Unicode Values support
 *
 *   By default, FreeType~2 is built with the 'psnames' module compiled in.
 *   Among other things, the module is used to convert a glyph name into a
 *   Unicode value.  This is especially useful in order to synthesize on
 *   the fly a Unicode charmap from the CFF/Type~1 driver through a big
 *   table named the 'Adobe Glyph List' (AGL).
 *
 *   Undefine this macro if you do not want the Adobe Glyph List compiled
 *   in your 'psnames' module.  The Type~1 driver will not be able to
 *   synthesize a Unicode charmap out of the glyphs found in the fonts.
 */
#define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST


/**************************************************************************
 *
 * Support for Mac fonts
 *
 *   Define this macro if you want support for outline fonts in Mac format
 *   (mac dfont, mac resource, macbinary containing a mac resource) on
 *   non-Mac platforms.
 *
 *   Note that the 'FOND' resource isn't checked.
 */
/* #define FT_CONFIG_OPTION_MAC_FONTS */


/**************************************************************************
 *
 * Guessing methods to access embedded resource forks
 *
 *   Enable extra Mac fonts support on non-Mac platforms (e.g., GNU/Linux).
 *
 *   Resource forks which include fonts data are stored sometimes in
 *   locations which users or developers don't expected.  In some cases,
 *   resource forks start with some offset from the head of a file.  In
 *   other cases, the actual resource fork is stored in file different from
 *   what the user specifies.  If this option is activated, FreeType tries
 *   to guess whether such offsets or different file names must be used.
 *
 *   Note that normal, direct access of resource forks is controlled via
 *   the `FT_CONFIG_OPTION_MAC_FONTS` option.
 */
#ifdef FT_CONFIG_OPTION_MAC_FONTS
    #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
#endif


/**************************************************************************
 *
 * Allow the use of `FT_Incremental_Interface` to load typefaces that
 * contain no glyph data, but supply it via a callback function.  This is
 * required by clients supporting document formats which supply font data
 * incrementally as the document is parsed, such as the Ghostscript
 * interpreter for the PostScript language.
 */
#define FT_CONFIG_OPTION_INCREMENTAL


/**************************************************************************
 *
 * The size in bytes of the render pool used by the scan-line converter to
 * do all of its work.
 */
#define FT_RENDER_POOL_SIZE  16384L


/**************************************************************************
 *
 * FT_MAX_MODULES
 *
 *   The maximum number of modules that can be registered in a single
 *   FreeType library object.  32~is the default.
 */
#define FT_MAX_MODULES  32


/**************************************************************************
 *
 * Debug level
 *
 *   FreeType can be compiled in debug or trace mode.  In debug mode,
 *   errors are reported through the 'ftdebug' component.  In trace mode,
 *   additional messages are sent to the standard output during execution.
 *
 *   Define `FT_DEBUG_LEVEL_ERROR` to build the library in debug mode.
 *   Define `FT_DEBUG_LEVEL_TRACE` to build it in trace mode.
 *
 *   Don't define any of these macros to compile in 'release' mode!
 *
 *   Do not `#undef` these macros here since the build system might define
 *   them for certain configurations only.
 */
/* #define FT_DEBUG_LEVEL_ERROR */
/* #define FT_DEBUG_LEVEL_TRACE */


/**************************************************************************
 *
 * Logging
 *
 *   Compiling FreeType in debug or trace mode makes FreeType write error
 *   and trace log messages to `stderr`.  Enabling this macro
 *   automatically forces the `FT_DEBUG_LEVEL_ERROR` and
 *   `FT_DEBUG_LEVEL_TRACE` macros and allows FreeType to write error and
 *   trace log messages to a file instead of `stderr`.  For writing logs
 *   to a file, FreeType uses an the external `dlg` library (the source
 *   code is in `src/dlg`).
 *
 *   This option needs a C99 compiler.
 */
/* #define FT_DEBUG_LOGGING */


/**************************************************************************
 *
 * Autofitter debugging
 *
 *   If `FT_DEBUG_AUTOFIT` is defined, FreeType provides some means to
 *   control the autofitter behaviour for debugging purposes with global
 *   boolean variables (consequently, you should **never** enable this
 *   while compiling in 'release' mode):
 *
 *   ```
 *     _af_debug_disable_horz_hints
 *     _af_debug_disable_vert_hints
 *     _af_debug_disable_blue_hints
 *   ```
 *
 *   Additionally, the following functions provide dumps of various
 *   internal autofit structures to stdout (using `printf`):
 *
 *   ```
 *     af_glyph_hints_dump_points
 *     af_glyph_hints_dump_segments
 *     af_glyph_hints_dump_edges
 *     af_glyph_hints_get_num_segments
 *     af_glyph_hints_get_segment_offset
 *   ```
 *
 *   As an argument, they use another global variable:
 *
 *   ```
 *     _af_debug_hints
 *   ```
 *
 *   Please have a look at the `ftgrid` demo program to see how those
 *   variables and macros should be used.
 *
 *   Do not `#undef` these macros here since the build system might define
 *   them for certain configurations only.
 */
/* #define FT_DEBUG_AUTOFIT */


/**************************************************************************
 *
 * Memory Debugging
 *
 *   FreeType now comes with an integrated memory debugger that is capable
 *   of detecting simple errors like memory leaks or double deletes.  To
 *   compile it within your build of the library, you should define
 *   `FT_DEBUG_MEMORY` here.
 *
 *   Note that the memory debugger is only activated at runtime when when
 *   the _environment_ variable `FT2_DEBUG_MEMORY` is defined also!
 *
 *   Do not `#undef` this macro here since the build system might define it
 *   for certain configurations only.
 */
/* #define FT_DEBUG_MEMORY */


/**************************************************************************
 *
 * Module errors
 *
 *   If this macro is set (which is _not_ the default), the higher byte of
 *   an error code gives the module in which the error has occurred, while
 *   the lower byte is the real error code.
 *
 *   Setting this macro makes sense for debugging purposes only, since it
 *   would break source compatibility of certain programs that use
 *   FreeType~2.
 *
 *   More details can be found in the files `ftmoderr.h` and `fterrors.h`.
 */
#undef FT_CONFIG_OPTION_USE_MODULE_ERRORS


/**************************************************************************
 *
 * OpenType SVG Glyph Support
 *
 *   Setting this macro enables support for OpenType SVG glyphs.  By
 *   default, FreeType can only fetch SVG documents.  However, it can also
 *   render them if external rendering hook functions are plugged in at
 *   runtime.
 *
 *   More details on the hooks can be found in file `otsvg.h`.
 */
#define FT_CONFIG_OPTION_SVG


/**************************************************************************
 *
 * Error Strings
 *
 *   If this macro is set, `FT_Error_String` will return meaningful
 *   descriptions.  This is not enabled by default to reduce the overall
 *   size of FreeType.
 *
 *   More details can be found in the file `fterrors.h`.
 */
#define FT_CONFIG_OPTION_ERROR_STRINGS


/*************************************************************************/
/*************************************************************************/
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/*************************************************************************/
/*************************************************************************/


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_EMBEDDED_BITMAPS` if you want to support
 * embedded bitmaps in all formats using the 'sfnt' module (namely
 * TrueType~& OpenType).
 */
#define TT_CONFIG_OPTION_EMBEDDED_BITMAPS


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_COLOR_LAYERS` if you want to support colored
 * outlines (from the 'COLR'/'CPAL' tables) in all formats using the 'sfnt'
 * module (namely TrueType~& OpenType).
 */
#define TT_CONFIG_OPTION_COLOR_LAYERS


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_POSTSCRIPT_NAMES` if you want to be able to
 * load and enumerate the glyph Postscript names in a TrueType or OpenType
 * file.
 *
 * Note that when you do not compile the 'psnames' module by undefining the
 * above `FT_CONFIG_OPTION_POSTSCRIPT_NAMES`, the 'sfnt' module will
 * contain additional code used to read the PS Names table from a font.
 *
 * (By default, the module uses 'psnames' to extract glyph names.)
 */
#define TT_CONFIG_OPTION_POSTSCRIPT_NAMES


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_SFNT_NAMES` if your applications need to access
 * the internal name table in a SFNT-based format like TrueType or
 * OpenType.  The name table contains various strings used to describe the
 * font, like family name, copyright, version, etc.  It does not contain
 * any glyph name though.
 *
 * Accessing SFNT names is done through the functions declared in
 * `ftsnames.h`.
 */
#define TT_CONFIG_OPTION_SFNT_NAMES


/**************************************************************************
 *
 * TrueType CMap support
 *
 *   Here you can fine-tune which TrueType CMap table format shall be
 *   supported.
 */
#define TT_CONFIG_CMAP_FORMAT_0
#define TT_CONFIG_CMAP_FORMAT_2
#define TT_CONFIG_CMAP_FORMAT_4
#define TT_CONFIG_CMAP_FORMAT_6
#define TT_CONFIG_CMAP_FORMAT_8
#define TT_CONFIG_CMAP_FORMAT_10
#define TT_CONFIG_CMAP_FORMAT_12
#define TT_CONFIG_CMAP_FORMAT_13
#define TT_CONFIG_CMAP_FORMAT_14


/*************************************************************************/
/*************************************************************************/
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/*************************************************************************/
/*************************************************************************/

/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_BYTECODE_INTERPRETER` if you want to compile a
 * bytecode interpreter in the TrueType driver.
 *
 * By undefining this, you will only compile the code necessary to load
 * TrueType glyphs without hinting.
 *
 * Do not `#undef` this macro here, since the build system might define it
 * for certain configurations only.
 */
#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_SUBPIXEL_HINTING` if you want to compile
 * subpixel hinting support into the TrueType driver.  This modifies the
 * TrueType hinting mechanism when anything but `FT_RENDER_MODE_MONO` is
 * requested.
 *
 * In particular, it modifies the bytecode interpreter to interpret (or
 * not) instructions in a certain way so that all TrueType fonts look like
 * they do in a Windows ClearType (DirectWrite) environment.  See [1] for a
 * technical overview on what this means.  See `ttinterp.h` for more
 * details on the LEAN option.
 *
 * There are three possible values.
 *
 * Value 1:
 *   This value is associated with the 'Infinality' moniker, contributed by
 *   an individual nicknamed Infinality with the goal of making TrueType
 *   fonts render better than on Windows.  A high amount of configurability
 *   and flexibility, down to rules for single glyphs in fonts, but also
 *   very slow.  Its experimental and slow nature and the original
 *   developer losing interest meant that this option was never enabled in
 *   default builds.
 *
 *   The corresponding interpreter version is v38.
 *
 * Value 2:
 *   The new default mode for the TrueType driver.  The Infinality code
 *   base was stripped to the bare minimum and all configurability removed
 *   in the name of speed and simplicity.  The configurability was mainly
 *   aimed at legacy fonts like 'Arial', 'Times New Roman', or 'Courier'.
 *   Legacy fonts are fonts that modify vertical stems to achieve clean
 *   black-and-white bitmaps.  The new mode focuses on applying a minimal
 *   set of rules to all fonts indiscriminately so that modern and web
 *   fonts render well while legacy fonts render okay.
 *
 *   The corresponding interpreter version is v40.
 *
 * Value 3:
 *   Compile both, making both v38 and v40 available (the latter is the
 *   default).
 *
 * By undefining these, you get rendering behavior like on Windows without
 * ClearType, i.e., Windows XP without ClearType enabled and Win9x
 * (interpreter version v35).  Or not, depending on how much hinting blood
 * and testing tears the font designer put into a given font.  If you
 * define one or both subpixel hinting options, you can switch between
 * between v35 and the ones you define (using `FT_Property_Set`).
 *
 * This option requires `TT_CONFIG_OPTION_BYTECODE_INTERPRETER` to be
 * defined.
 *
 * [1]
 * https://www.microsoft.com/typography/cleartype/truetypecleartype.aspx
 */
/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING  1         */
#define TT_CONFIG_OPTION_SUBPIXEL_HINTING  2
/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING  ( 1 | 2 ) */


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED` to compile the
 * TrueType glyph loader to use Apple's definition of how to handle
 * component offsets in composite glyphs.
 *
 * Apple and MS disagree on the default behavior of component offsets in
 * composites.  Apple says that they should be scaled by the scaling
 * factors in the transformation matrix (roughly, it's more complex) while
 * MS says they should not.  OpenType defines two bits in the composite
 * flags array which can be used to disambiguate, but old fonts will not
 * have them.
 *
 *   https://www.microsoft.com/typography/otspec/glyf.htm
 *   https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6glyf.html
 */
#undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_GX_VAR_SUPPORT` if you want to include support
 * for Apple's distortable font technology ('fvar', 'gvar', 'cvar', and
 * 'avar' tables).  Tagged 'Font Variations', this is now part of OpenType
 * also.  This has many similarities to Type~1 Multiple Masters support.
 */
#define TT_CONFIG_OPTION_GX_VAR_SUPPORT


/**************************************************************************
 *
 * Define `TT_CONFIG_OPTION_BDF` if you want to include support for an
 * embedded 'BDF~' table within SFNT-based bitmap formats.
 */
#define TT_CONFIG_OPTION_BDF


/**************************************************************************
 *
 * Option `TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES` controls the maximum
 * number of bytecode instructions executed for a single run of the
 * bytecode interpreter, needed to prevent infinite loops.  You don't want
 * to change this except for very special situations (e.g., making a
 * library fuzzer spend less time to handle broken fonts).
 *
 * It is not expected that this value is ever modified by a configuring
 * script; instead, it gets surrounded with `#ifndef ... #endif` so that
 * the value can be set as a preprocessor option on the compiler's command
 * line.
 */
#ifndef TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES
    #define TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES  1000000L
#endif


/*************************************************************************/
/*************************************************************************/
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/****      T Y P E 1   D R I V E R    C O N F I G U R A T I O N       ****/
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/*************************************************************************/
/*************************************************************************/


/**************************************************************************
 *
 * `T1_MAX_DICT_DEPTH` is the maximum depth of nest dictionaries and arrays
 * in the Type~1 stream (see `t1load.c`).  A minimum of~4 is required.
 */
#define T1_MAX_DICT_DEPTH  5


/**************************************************************************
 *
 * `T1_MAX_SUBRS_CALLS` details the maximum number of nested sub-routine
 * calls during glyph loading.
 */
#define T1_MAX_SUBRS_CALLS  16


/**************************************************************************
 *
 * `T1_MAX_CHARSTRING_OPERANDS` is the charstring stack's capacity.  A
 * minimum of~16 is required.
 *
 * The Chinese font 'MingTiEG-Medium' (covering the CNS 11643 character
 * set) needs 256.
 */
#define T1_MAX_CHARSTRINGS_OPERANDS  256


/**************************************************************************
 *
 * Define this configuration macro if you want to prevent the compilation
 * of the 't1afm' module, which is in charge of reading Type~1 AFM files
 * into an existing face.  Note that if set, the Type~1 driver will be
 * unable to produce kerning distances.
 */
#undef T1_CONFIG_OPTION_NO_AFM


/**************************************************************************
 *
 * Define this configuration macro if you want to prevent the compilation
 * of the Multiple Masters font support in the Type~1 driver.
 */
#undef T1_CONFIG_OPTION_NO_MM_SUPPORT


/**************************************************************************
 *
 * `T1_CONFIG_OPTION_OLD_ENGINE` controls whether the pre-Adobe Type~1
 * engine gets compiled into FreeType.  If defined, it is possible to
 * switch between the two engines using the `hinting-engine` property of
 * the 'type1' driver module.
 */
/* #define T1_CONFIG_OPTION_OLD_ENGINE */


/*************************************************************************/
/*************************************************************************/
/****                                                                 ****/
/****         C F F   D R I V E R    C O N F I G U R A T I O N        ****/
/****                                                                 ****/
/*************************************************************************/
/*************************************************************************/


/**************************************************************************
 *
 * Using `CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4}` it is
 * possible to set up the default values of the four control points that
 * define the stem darkening behaviour of the (new) CFF engine.  For more
 * details please read the documentation of the `darkening-parameters`
 * property (file `ftdriver.h`), which allows the control at run-time.
 *
 * Do **not** undefine these macros!
 */
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1   500
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1   400

#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2  1000
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2   275

#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3  1667
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3   275

#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4  2333
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4     0


/**************************************************************************
 *
 * `CFF_CONFIG_OPTION_OLD_ENGINE` controls whether the pre-Adobe CFF engine
 * gets compiled into FreeType.  If defined, it is possible to switch
 * between the two engines using the `hinting-engine` property of the 'cff'
 * driver module.
 */
/* #define CFF_CONFIG_OPTION_OLD_ENGINE */


/*************************************************************************/
/*************************************************************************/
/****                                                                 ****/
/****         P C F   D R I V E R    C O N F I G U R A T I O N        ****/
/****                                                                 ****/
/*************************************************************************/
/*************************************************************************/


/**************************************************************************
 *
 * There are many PCF fonts just called 'Fixed' which look completely
 * different, and which have nothing to do with each other.  When selecting
 * 'Fixed' in KDE or Gnome one gets results that appear rather random, the
 * style changes often if one changes the size and one cannot select some
 * fonts at all.  This option makes the 'pcf' module prepend the foundry
 * name (plus a space) to the family name.
 *
 * We also check whether we have 'wide' characters; all put together, we
 * get family names like 'Sony Fixed' or 'Misc Fixed Wide'.
 *
 * If this option is activated, it can be controlled with the
 * `no-long-family-names` property of the 'pcf' driver module.
 */
/* #define PCF_CONFIG_OPTION_LONG_FAMILY_NAMES */


/*************************************************************************/
/*************************************************************************/
/****                                                                 ****/
/****    A U T O F I T   M O D U L E    C O N F I G U R A T I O N     ****/
/****                                                                 ****/
/*************************************************************************/
/*************************************************************************/


/**************************************************************************
 *
 * Compile 'autofit' module with CJK (Chinese, Japanese, Korean) script
 * support.
 */
#define AF_CONFIG_OPTION_CJK


/**************************************************************************
 *
 * Compile 'autofit' module with fallback Indic script support, covering
 * some scripts that the 'latin' submodule of the 'autofit' module doesn't
 * (yet) handle.  Currently, this needs option `AF_CONFIG_OPTION_CJK`.
 */
#ifdef AF_CONFIG_OPTION_CJK
    #define AF_CONFIG_OPTION_INDIC
#endif


/**************************************************************************
 *
 * Use TrueType-like size metrics for 'light' auto-hinting.
 *
 * It is strongly recommended to avoid this option, which exists only to
 * help some legacy applications retain its appearance and behaviour with
 * respect to auto-hinted TrueType fonts.
 *
 * The very reason this option exists at all are GNU/Linux distributions
 * like Fedora that did not un-patch the following change (which was
 * present in FreeType between versions 2.4.6 and 2.7.1, inclusive).
 *
 * ```
 *   2011-07-16  Steven Chu  <steven.f.chu@gmail.com>
 *
 *     [truetype] Fix metrics on size request for scalable fonts.
 * ```
 *
 * This problematic commit is now reverted (more or less).
 */
/* #define AF_CONFIG_OPTION_TT_SIZE_METRICS */

/* */


/*
 * This macro is obsolete.  Support has been removed in FreeType version
 * 2.5.
 */
/* #define FT_CONFIG_OPTION_OLD_INTERNALS */


/*
 * The next three macros are defined if native TrueType hinting is
 * requested by the definitions above.  Don't change this.
 */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
    #define  TT_USE_BYTECODE_INTERPRETER

    #ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
        #if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 1
            #define  TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
        #endif

        #if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 2
            #define  TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
        #endif
    #endif
#endif


/*
 * The TT_SUPPORT_COLRV1 macro is defined to indicate to clients that this
 * version of FreeType has support for 'COLR' v1 API.  This definition is
 * useful to FreeType clients that want to build in support for 'COLR' v1
 * depending on a tip-of-tree checkout before it is officially released in
 * FreeType, and while the feature cannot yet be tested against using
 * version macros.  Don't change this macro.  This may be removed once the
 * feature is in a FreeType release version and version macros can be used
 * to test for availability.
 */
#ifdef TT_CONFIG_OPTION_COLOR_LAYERS
    #define  TT_SUPPORT_COLRV1
#endif


/*
 * Check CFF darkening parameters.  The checks are the same as in function
 * `cff_property_set` in file `cffdrivr.c`.
 */
#if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0   || \
    \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0   || \
    \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 >        \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2     || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 >        \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3     || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 >        \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4     || \
    \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500
    #error "Invalid CFF darkening parameters!"
#endif


FT_END_HEADER

#endif /* FTOPTION_H_ */


/* END */
