$NetBSD$

Link against -lrt for shm_open
XXX unclear why only netbsd needs this

--- src/frameserver/terminal/default/CMakeLists.txt.orig	2018-12-10 23:33:36.000000000 +0000
+++ src/frameserver/terminal/default/CMakeLists.txt
@@ -8,6 +8,7 @@ SET(TERMINAL_SOURCES
 )
 
 SET(TERMINAL_LIBS
+	rt
 	util
 	arcan_tui
 	PARENT_SCOPE