$NetBSD$

--- config.h.in.orig	2018-03-12 19:53:33.000000000 +0000
+++ config.h.in
@@ -57,6 +57,9 @@
 /* Define to 1 if target is MIPS based. */
 #mesondefine HAVE_MIPS
 
+/* Define to 1 if OS is NetBSD based. */
+#mesondefine HAVE_NETBSD
+
 /* Define to 1 if OS is QNX based. */
 #mesondefine HAVE_QNX