From 535763a5e2ac5085113a06882337242d75893fd3 Mon Sep 17 00:00:00 2001
From: bradh352 <brad@brad-house.com>
Date: Mon, 14 Sep 2020 07:07:45 -0400
Subject: [PATCH] Define T_OPT if system doesn't provide it

---
 src/lib/nameser.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/lib/nameser.h b/src/lib/nameser.h
index a0302fd3..27b86470 100644
--- a/src/lib/nameser.h
+++ b/src/lib/nameser.h
@@ -208,4 +208,9 @@ typedef enum __ns_rcode {
 
 #endif /* HAVE_ARPA_NAMESER_COMPAT_H */
 
+/* Android's bionic arpa/nameser_compat.h, nor glibc versions prior to 2.25 have T_OPT defined */
+#ifndef T_OPT
+#  define T_OPT ns_t_opt
+#endif
+
 #endif /* ARES_NAMESER_H */