diff -ur libgd-2.3.3/src/gd.h libgd-src/src/gd.h
--- libgd-2.3.3/src/gd.h	Sat Sep 11 13:52:47 2021
+++ libgd-src/src/gd.h	Mon Sep 13 12:41:43 2021
@@ -63,7 +63,7 @@
 #   define BGD_EXPORT_DATA_PROT __declspec(dllimport)
 #  endif
 # endif
-# define BGD_STDCALL __stdcall
+# define BGD_STDCALL
 # define BGD_EXPORT_DATA_IMPL
 # define BGD_MALLOC
 #else
