gentoo-overlay/app-text/ghostscript-gpl/files/ghostscript-gpl-9.53.3-freetype-2.10.3.patch

https://bugs.ghostscript.com/show_bug.cgi?id=702985
https://bugs.gentoo.org/747808

--- ghostscript-9.53.3/base/fapi_ft.c
+++ ghostscript-9.53.3/base/fapi_ft.c
@@ -125,6 +125,14 @@
 delete_inc_int_info(gs_fapi_server * a_server,
                     FT_IncrementalRec * a_inc_int_info);
 
+#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(void *)
 FF_alloc(FT_Memory memory, long size)
 {