Index: pcbnew/CMakeLists.txt
--- pcbnew/CMakeLists.txt.orig
+++ pcbnew/CMakeLists.txt
@@ -495,7 +495,7 @@ add_custom_command( OUTPUT ${CMAKE_CURRENT_BINARY_DIR}
     )
 
 if( UNIX AND NOT APPLE )
-    list( APPEND PCBNEW_EXTRA_LIBS rt )
+    list( APPEND PCBNEW_EXTRA_LIBS )
 endif()
 
 
