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diff --git a/src/truetype/ttsubpix.h b/src/truetype/ttsubpix.h
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+/***************************************************************************/
+/* */
+/* ttsubpix.h */
+/* */
+/* TrueType Subpixel Hinting. */
+/* */
+/* Copyright 2010-2013 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 __TTSUBPIX_H__
+#define __TTSUBPIX_H__
+
+#include <ft2build.h>
+#include "ttobjs.h"
+#include "ttinterp.h"
+
+
+FT_BEGIN_HEADER
+
+
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
+ /*************************************************************************/
+ /* */
+ /* ID flags to identify special functions at FDEF and runtime. */
+ /* */
+ /* */
+#define SPH_FDEF_INLINE_DELTA_1 0x0000001
+#define SPH_FDEF_INLINE_DELTA_2 0x0000002
+#define SPH_FDEF_DIAGONAL_STROKE 0x0000004
+#define SPH_FDEF_VACUFORM_ROUND_1 0x0000008
+#define SPH_FDEF_TTFAUTOHINT_1 0x0000010
+#define SPH_FDEF_SPACING_1 0x0000020
+#define SPH_FDEF_SPACING_2 0x0000040
+#define SPH_FDEF_TYPEMAN_STROKES 0x0000080
+#define SPH_FDEF_TYPEMAN_DIAGENDCTRL 0x0000100
+
+
+ /*************************************************************************/
+ /* */
+ /* Tweak flags that are set for each glyph by the below rules. */
+ /* */
+ /* */
+#define SPH_TWEAK_ALLOW_X_DMOVE 0x0000001
+#define SPH_TWEAK_ALWAYS_DO_DELTAP 0x0000002
+#define SPH_TWEAK_ALWAYS_SKIP_DELTAP 0x0000004
+#define SPH_TWEAK_COURIER_NEW_2_HACK 0x0000008
+#define SPH_TWEAK_DEEMBOLDEN 0x0000010
+#define SPH_TWEAK_DO_SHPIX 0x0000020
+#define SPH_TWEAK_EMBOLDEN 0x0000040
+#define SPH_TWEAK_MIAP_HACK 0x0000080
+#define SPH_TWEAK_NORMAL_ROUND 0x0000100
+#define SPH_TWEAK_NO_ALIGNRP_AFTER_IUP 0x0000200
+#define SPH_TWEAK_NO_CALL_AFTER_IUP 0x0000400
+#define SPH_TWEAK_NO_DELTAP_AFTER_IUP 0x0000800
+#define SPH_TWEAK_PIXEL_HINTING 0x0001000
+#define SPH_TWEAK_RASTERIZER_35 0x0002000
+#define SPH_TWEAK_ROUND_NONPIXEL_Y_MOVES 0x0004000
+#define SPH_TWEAK_SKIP_IUP 0x0008000
+#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES 0x0010000
+#define SPH_TWEAK_SKIP_OFFPIXEL_Y_MOVES 0x0020000
+#define SPH_TWEAK_TIMES_NEW_ROMAN_HACK 0x0040000
+#define SPH_TWEAK_SKIP_NONPIXEL_Y_MOVES_DELTAP 0x0080000
+
+
+ FT_LOCAL( FT_Bool )
+ sph_test_tweak( TT_Face face,
+ const FT_String* family,
+ FT_UInt ppem,
+ const FT_String* style,
+ FT_UInt glyph_index,
+ const SPH_TweakRule* rule,
+ FT_UInt num_rules );
+
+ FT_LOCAL( FT_UInt )
+ sph_test_tweak_x_scaling( TT_Face face,
+ const FT_String* family,
+ FT_UInt ppem,
+ const FT_String* style,
+ FT_UInt glyph_index );
+
+ FT_LOCAL( void )
+ sph_set_tweaks( TT_Loader loader,
+ FT_UInt glyph_index );
+
+
+ /* These macros are defined absent a method for setting them */
+#define SPH_OPTION_BITMAP_WIDTHS FALSE
+#define SPH_OPTION_SET_SUBPIXEL TRUE
+#define SPH_OPTION_SET_GRAYSCALE FALSE
+#define SPH_OPTION_SET_COMPATIBLE_WIDTHS FALSE
+#define SPH_OPTION_SET_RASTERIZER_VERSION 38
+
+#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+
+FT_END_HEADER
+
+#endif /* __TTSUBPIX_H__ */
+
+/* END */