https://gitlab.kitware.com/vtk/vtk/-/issues/18033 diff -ur a/base/fapi_ft.c b/base/fapi_ft.c --- a/base/fapi_ft.c 2022-02-05 02:01:29.370000000 +0000 +++ b/base/fapi_ft.c 2022-02-05 02:03:31.520000000 +0000 @@ -1,3 +1,13 @@ +/* FT_CALLBACK_DEF no longer exported since freetype-2.10.3 */ +/* has been moved to <freetype/internal/compiler-macros.h> */ +# ifndef FT_CALLBACK_DEF +# ifdef __cplusplus +# define FT_CALLBACK_DEF( x ) extern "C" x +# else +# define FT_CALLBACK_DEF( x ) static x +# endif +# endif /* FT_CALLBACK_DEF */ + /* Copyright (C) 2001-2012 Artifex Software, Inc. All Rights Reserved.