FcFreeTypeCharSet (FT_Face face, FcBlanks *blanks);
FcResult
-FcPatternGetFTFace (FcPattern *p, const char *object, int n, FT_Face *f);
+FcPatternGetFTFace (const FcPattern *p, const char *object, int n, FT_Face *f);
FcBool
FcPatternAddFTFace (FcPattern *p, const char *object, const FT_Face f);