https://github.com/octo/liboping/issues/32
--- src/oping.c.orig	2017-05-11 02:32:27.000000000 -0500
+++ src/oping.c	2018-03-08 07:07:18.000000000 -0600
@@ -78,7 +78,6 @@
 #include <langinfo.h>
 
 #if USE_NCURSES
-# define NCURSES_OPAQUE 1
 /* http://newsgroups.derkeiler.com/Archive/Rec/rec.games.roguelike.development/2010-09/msg00050.html */
 # define _X_OPEN_SOURCE_EXTENDED