$OpenBSD: patch-src_i18n_cc,v 1.1 2017/05/22 00:13:09 espie Exp $

you no longer get prototypes for free

Index: src/i18n.cc
--- src/i18n.cc.orig
+++ src/i18n.cc
@@ -26,6 +26,7 @@
 #include <libintl.h>
 
 #include <cstdlib>
+#include <clocale>
 #include <utility>
 
 #if __APPLE__  && LIBINTL_VERSION >= 0x001201