+find_library(HAVE_NS3_LIB
+ NAME ns3
+ HINTS
+ $ENV{LD_LIBRARY_PATH}
+ $ENV{HOME}
+ PATH_SUFFIXES lib64 lib lib64/ns3 lib/ns3
+ PATHS
+ /opt
+ /opt/local
+ /opt/csw
+ /sw
+ /usr
+ ${ns3_path}
+)
+
+find_path(HAVE_CORE_MODULE_H
+ NAME ns3/core-module.h
+ HINTS
+ $ENV{HOME}
+ PATH_SUFFIXES include include/ns3
+ PATHS
+ /opt
+ /opt/local
+ /opt/csw
+ /sw
+ /usr
+ ${ns3_path}
+)
+
+message(STATUS "Looking for core-module.h")
+if(HAVE_CORE_MODULE_H)
+message(STATUS "Looking for core-module.h - found")
+else(HAVE_CORE_MODULE_H)
+message(STATUS "Looking for core-module.h - not found")
+endif(HAVE_CORE_MODULE_H)
+mark_as_advanced(HAVE_CORE_MODULE_H)
+
+message(STATUS "Looking for lib ns3")
+if(HAVE_NS3_LIB)
+message(STATUS "Looking for lib ns3 - found")
+else(HAVE_NS3_LIB)
+message(STATUS "Looking for lib ns3 - not found")
+endif(HAVE_NS3_LIB)
+mark_as_advanced(HAVE_NS3_LIB)
+
+if(HAVE_NS3_LIB AND HAVE_CORE_MODULE_H)
+ set(HAVE_NS3 1)
+ string(REPLACE "/libns3.${LIB_EXE}" "" HAVE_NS3_LIB "${HAVE_NS3_LIB}")
+ string(REGEX MATCH "${HAVE_NS3_LIB}" operation "$ENV{LD_LIBRARY_PATH}")
+
+ if(NOT operation)
+
+ message(STATUS "Warning: To use NS-3 don't forget to set LD_LIBRARY_PATH with: export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${HAVE_NS3_LIB}")
+ set(HAVE_NS3 0)
+
+ else(NOT operation)
+
+ string(REGEX MATCH "-L${HAVE_NS3_LIB} " operation1 "${CMAKE_C_FLAGS}")
+ if(NOT operation1)
+ SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}-L${HAVE_NS3_LIB} ")
+ endif(NOT operation1)
+
+ SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}-I${HAVE_CORE_MODULE_H} -L${HAVE_NS3_LIB} ")
+ endif(NOT operation)
+
+endif(HAVE_NS3_LIB AND HAVE_CORE_MODULE_H)
\ No newline at end of file