allow build on solaris

git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@1420 7ae35d74-ebe9-4afe-98af-79ac388436b8

src/event.c

@@ -1,8 +1,8 @@
 /*
  *  Hamlib Interface - event handling
- *  Copyright (c) 2000-2002 by Stephane Fillod and Frank Singleton
+ *  Copyright (c) 2000-2003 by Stephane Fillod and Frank Singleton
  *
- *	$Id: event.c,v 1.14 2002-09-29 20:18:34 fillods Exp $
+ *	$Id: event.c,v 1.15 2003-04-02 07:24:28 fillods Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -88,7 +88,7 @@ int add_trn_rig(RIG *rig)
 		rig_debug(RIG_DEBUG_ERR,"rig_open fcntl SETOWN failed: %s\n",
 						strerror(errno));
 
-#ifdef HAVE_SIGINFO_T
+#if defined(HAVE_SIGINFO_T) && defined(O_ASYNC)
 #ifdef F_SETSIG
 	status = fcntl(rig->state.rigport.fd, F_SETSIG, SIGIO);
 	if (status < 0)
@@ -100,6 +100,8 @@ int add_trn_rig(RIG *rig)
 	if (status < 0)
 		rig_debug(RIG_DEBUG_ERR,"rig_open fcntl SETASYNC failed: %s\n",
 						strerror(errno));
+#else
+	return -RIG_ENIMPL;
 #endif
 
 	return RIG_OK;