`make devel' fails if FT_CONFIG_OPTION_OLD_INTERNALS is set.

* devel/ftoption.h: Synchronize with
include/freetype/config/ftoption.h.

1 files changed, 23 insertions, 2 deletions

diff --git a/devel/ftoption.h b/devel/ftoption.h
index 058601e4c..4f12373d2 100644
--- a/devel/ftoption.h
+++ b/devel/ftoption.h
@@ -317,7 +317,7 @@ FT_BEGIN_HEADER
   /* supply font data incrementally as the document is parsed, such        */
   /* as the Ghostscript interpreter for the PostScript language.           */
   /*                                                                       */
-#define FT_CONFIG_OPTION_INCREMENTAL
+/* #define FT_CONFIG_OPTION_INCREMENTAL */
 
 
   /*************************************************************************/
@@ -689,7 +689,28 @@ FT_BEGIN_HEADER
    * is recommended to disable the macro since it reduces the library's code
    * size and activates a few memory-saving optimizations as well.
    */
-/* #define FT_CONFIG_OPTION_OLD_INTERNALS */
+#define FT_CONFIG_OPTION_OLD_INTERNALS
+
+
+  /*
+   *  To detect legacy cache-lookup call from a rogue client (<= 2.1.7),
+   *  we restrict the number of charmaps in a font.  The current API of
+   *  FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API
+   *  takes charcode only.  To determine the passed value is for cmap_index
+   *  or charcode, the possible cmap_index is restricted not to exceed
+   *  the minimum possible charcode by a rogue client.  It is also very
+   *  unlikely that a rogue client is interested in Unicode values 0 to 15.
+   *
+   *  NOTE: The original threshold was 4 deduced from popular number of
+   *        cmap subtables in UCS-4 TrueType fonts, but now it is not
+   *        irregular for OpenType fonts to have more than 4 subtables,
+   *        because variation selector subtables are available for Apple
+   *        and Microsoft platforms.
+   */
+
+#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
+#define FT_MAX_CHARMAP_CACHEABLE 15
+#endif
 
 
   /*