From 6c8716e9dabb5aece68eec87bbf4e322ff92e6a2 Mon Sep 17 00:00:00 2001
From: Uwe Hermann <uwe@hermann-uwe.de>
Date: Sun, 1 Dec 2013 18:04:24 +0100
Subject: [PATCH] TIOCINQ/TIOCOUTQ is not available everywhere.

E.g. on NetBSD TIOCINQ is not available, but FIONREAD seems to
do pretty much the same thing.
---
 serialport.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/serialport.c b/serialport.c
index bbb53bd..0276567 100644
--- a/serialport.c
+++ b/serialport.c
@@ -50,11 +50,21 @@
 #include "libudev.h"
 #include "linux/serial.h"
 #include "linux_termios.h"
+
+/* TCGETX/TCSETX is not available everywhere. */
 #if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX)
 #define USE_TERMIOX
 #endif
 #endif
 
+/* TIOCINQ/TIOCOUTQ is not available everywhere. */
+#if !defined(TIOCINQ) && defined(FIONREAD)
+#define TIOCINQ FIONREAD
+#endif
+#if !defined(TIOCOUTQ) && defined(FIONWRITE)
+#define TIOCOUTQ FIONWRITE
+#endif
+
 #ifndef _WIN32
 #include "linux_termios.h"
 #endif