fix issue compiling pssch_ue when RF driver wasn't found

lib/examples/CMakeLists.txt

@@ -35,9 +35,6 @@ if(RF_FOUND)
 
   add_executable(pdsch_enodeb pdsch_enodeb.c)
   target_link_libraries(pdsch_enodeb srslte_phy srslte_common srslte_rf pthread)
-
-  add_executable(pssch_ue pssch_ue.c)
-  target_link_libraries(pssch_ue srslte_phy srslte_common srslte_rf pthread)
 else(RF_FOUND)
   add_definitions(-DDISABLE_RF)
 
@@ -46,15 +43,11 @@ else(RF_FOUND)
 
   add_executable(pdsch_enodeb pdsch_enodeb.c)
   target_link_libraries(pdsch_enodeb srslte_common srslte_phy pthread)
-
-  add_executable(pssch_ue pssch_ue.c)
-  target_link_libraries(pssch_ue srslte_common srslte_phy pthread)
 endif(RF_FOUND)
 
 if(SRSGUI_FOUND)
   include_directories(${SRSGUI_INCLUDE_DIRS})
   target_link_libraries(pdsch_ue ${SRSGUI_LIBRARIES})
-  target_link_libraries(pssch_ue ${SRSGUI_LIBRARIES})
   add_definitions(-DENABLE_GUI)
 endif(SRSGUI_FOUND)
 
@@ -87,6 +80,13 @@ if(RF_FOUND)
   add_executable(usrp_txrx usrp_txrx.c)
   target_link_libraries(usrp_txrx srslte_phy srslte_rf)
 
+  add_executable(pssch_ue pssch_ue.c)
+  target_link_libraries(pssch_ue srslte_phy srslte_common srslte_rf pthread)
+
+  if(SRSGUI_FOUND)
+    target_link_libraries(pssch_ue ${SRSGUI_LIBRARIES})
+  endif(SRSGUI_FOUND)
+
   message(STATUS "   examples will be installed.")
 
 else(RF_FOUND)