The zs serial port driver has been removed from Solaris. The zs specific code
in the parsolaris.c and parsestreams.c file now fails to compile. This patch
simply replaces the "ifdef sun" sections of code with a fictious define to
prevent the zs code from being compiled. The removal of all driver specific
code has been reported to the community as bug 2988
(http://bugs.ntp.org/show_bug.cgi?id=2988) This patch may be removed when NTP
is upgraded to a version that has that bug resolved.

--- libparse/parsesolaris.c
+++ libparse/parsesolaris.c
@@ -804,7 +804,7 @@ init_linemon(
 
 		pprintf(DD_INSTALL, "init_linemon: driver is \"%s\"\n", dname);
 
-#ifdef sun
+#ifdef no_zs_sun
 		if (dname && !strcmp(dname, "zs"))
 		{
 			return init_zs_linemon(dq, q);
@@ -833,7 +833,7 @@ close_linemon(
 	{
 		register char *dname = q->q_qinfo->qi_minfo->mi_idname;
 
-#ifdef sun
+#ifdef no_zs_sun
 		if (dname && !strcmp(dname, "zs"))
 		{
 			close_zs_linemon(q, my_q);
@@ -845,7 +845,7 @@ close_linemon(
 	pprintf(DD_INSTALL, "close_linemon: cannot find driver name\n");
 }
 
-#ifdef sun
+#ifdef no_zs_sun
 #include <sys/tty.h>
 #include <sys/zsdev.h>
 #include <sys/ser_async.h>
--- libparse/parsestreams.c
+++ libparse/parsestreams.c
@@ -954,7 +954,7 @@ init_linemon(
 
 		parseprintf(DD_INSTALL, ("init_linemon: driver is \"%s\"\n", dname));
 
-#ifdef sun
+#ifdef no_zs_sun
 		if (dname && !Strcmp(dname, "zs"))
 		{
 			return init_zs_linemon(dq, q);
@@ -983,7 +983,7 @@ close_linemon(
 	{
 		register char *dname = q->q_qinfo->qi_minfo->mi_idname;
 
-#ifdef sun
+#ifdef no_zs_sun
 		if (dname && !Strcmp(dname, "zs"))
 		{
 			close_zs_linemon(q, my_q);
@@ -995,7 +995,7 @@ close_linemon(
 	parseprintf(DD_INSTALL, ("close_linemon: cannot find driver name\n"));
 }
 
-#ifdef sun
+#ifdef no_zs_sun
 
 #include <sundev/zsreg.h>
 #include <sundev/zscom.h>