--- a/mono/eglib/eglib-config.h.in	2020-10-12 14:57:46.354634946 +0200
+++ b/mono/eglib/eglib-config.h.in	2020-10-12 15:00:10.106637683 +0200
@@ -26,7 +26,11 @@
 typedef @GSIZE@ gsize;
 typedef @GSSIZE@ gssize;
 
-#define G_GSIZE_FORMAT   @GSIZE_FORMAT@
+#ifdef __i386__
+#define G_GSIZE_FORMAT   "u"
+#else
+#define G_GSIZE_FORMAT   "lu"
+#endif
 
 #if defined (HOST_WATCHOS)
 #undef G_BREAKPOINT