wrap SIGINFO in ifdef

serverloop.c

@@ -104,11 +104,13 @@ sigchld_handler(int sig)
 	child_terminated = 1;
 }
 
+#ifdef SIGINFO
 static void
 siginfo_handler(int sig)
 {
 	siginfo_received = 1;
 }
+#endif
 
 static void
 client_alive_check(struct ssh *ssh)
@@ -341,11 +343,14 @@ server_loop2(struct ssh *ssh, Authctxt *authctxt)
 	debug("Entering interactive session for SSH2.");
 
 	if (sigemptyset(&bsigset) == -1 ||
-	    sigaddset(&bsigset, SIGCHLD) == -1 ||
-	    sigaddset(&bsigset, SIGINFO) == -1)
+	    sigaddset(&bsigset, SIGCHLD) == -1)
 		error_f("bsigset setup: %s", strerror(errno));
 	ssh_signal(SIGCHLD, sigchld_handler);
+#ifdef SIGINFO
+	if (sigaddset(&bsigset, SIGINFO) == -1)
+		error_f("bsigset setup: %s", strerror(errno));
 	ssh_signal(SIGINFO, siginfo_handler);
+#endif
 	child_terminated = 0;
 	connection_in = ssh_packet_get_connection_in(ssh);
 	connection_out = ssh_packet_get_connection_out(ssh);