diff -N -a -u -r ../gmime-2.6.23/iconv-detect.h ./iconv-detect.h
--- ../gmime-2.6.23/iconv-detect.h	1970-01-01 01:00:00.000000000 +0100
+++ ./iconv-detect.h	2017-04-06 18:24:52.423896227 +0200
@@ -0,0 +1,5 @@
+/* This is an auto-generated header, DO NOT EDIT! */
+
+#define ICONV_ISO_INT_FORMAT "iso-%u-%u"
+#define ICONV_ISO_STR_FORMAT "iso-%u-%s"
+#define ICONV_10646 "UCS-4BE"