diff -Nur original/include/freetype/config/ftoption.h modified/include/freetype/config/ftoption.h
--- original/include/freetype/config/ftoption.h	2017-05-21 15:51:51.464188000 +0100
+++ modified/include/freetype/config/ftoption.h	2017-05-21 15:52:50.587608121 +0100
@@ -925,7 +925,7 @@
   /*                                                                       */
   /* This problematic commit is now reverted (more or less).               */
   /*                                                                       */
-/* #define AF_CONFIG_OPTION_TT_SIZE_METRICS */
+#define AF_CONFIG_OPTION_TT_SIZE_METRICS
 
   /* */