From 1d4e487b297c979c14fcfde09353f3f76d7bd19f Mon Sep 17 00:00:00 2001
From: skarg <skarg@1e814d3a-8a88-4260-be86-c0dc25669c1e>
Date: Tue, 10 May 2011 15:52:52 +0000
Subject: [PATCH] Adjusted for linux builds without RS485 specific terminal I/O
 settings.

---
 bacnet-stack/ports/linux/rs485.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bacnet-stack/ports/linux/rs485.c b/bacnet-stack/ports/linux/rs485.c
index 4f07adc3..349ca21c 100644
--- a/bacnet-stack/ports/linux/rs485.c
+++ b/bacnet-stack/ports/linux/rs485.c
@@ -79,6 +79,10 @@ static unsigned int RS485_Baud = B38400;
 /* serial port name, /dev/ttyS0,
   /dev/ttyUSB0 for USB->RS485 from B&B Electronics USOPTL4 */
 static char *RS485_Port_Name = "/dev/ttyUSB0";
+/* some terminal I/O have RS-485 specific functionality */
+#ifndef RS485MOD
+#define RS485MOD 0
+#endif
 /* serial I/O settings */
 static struct termios RS485_oldtio;