--- libiconv-1.16/srclib/strerror-override.c.orig	2019-01-06 09:51:41.000000000 +0100
+++ libiconv-1.16/srclib/strerror-override.c	2019-04-27 18:10:42.939685001 +0200
@@ -25,6 +25,7 @@
 
 #if GNULIB_defined_EWINSOCK /* native Windows platforms */
 # if HAVE_WINSOCK2_H
+#  include <winerror.h>
 #  include <winsock2.h>
 # endif
 #endif