LibUtilities must be linked against rt for non-windows-systems

library/LibUtilities/CMakeLists.txt

@@ -348,6 +348,9 @@ TARGET_LINK_LIBRARIES(LibUtilities
     ${ZLIB_LIBRARY}
     ${TINYXML_LIB}
 )
+IF( UNIX AND NOT APPLE )
+    TARGET_LINK_LIBRARIES(LibUtilities rt)
+ENDIF( UNIX AND NOT APPLE )
 SET_LAPACK_LINK_LIBRARIES(LibUtilities)
 
 INSTALL(FILES ${ExpressionTemplates} DESTINATION ${NEKTAR_INCLUDE_DIR}/ExpressionTemplates COMPONENT dev)

templates/executable/CMakeLists.txt

@@ -21,11 +21,6 @@ ADD_DEFINITIONS(${NEKTAR++_DEFINITIONS})
 INCLUDE_DIRECTORIES(${NEKTAR++_INCLUDE_DIRS} ${NEKTAR++_TP_INCLUDE_DIRS})
 LINK_DIRECTORIES(${NEKTAR++_LIBRARY_DIRS} ${NEKTAR++_TP_LIBRARY_DIRS})
 
-# workaround for libLibUtilities: http://stackoverflow.com/questions/17150075/undefined-reference-to-clock-gettime-although-lrt-is-given
-# to fix, add rt to TARGET_LINK_LIBRARIES(LibUtilities ... in library/LibUtilities/CMakeLists.txt:341, but i have no idea how non-Linux
-# platforms handle this
-set(CMAKE_EXE_LINKER_FLAGS "-Wl,--no-as-needed")
-
 # TODO - Add an entry here for every source file in your project. Must not be empty!
 SET(SourceFileNames
     ExampleSolver.cpp