build: Add --enable-mtp option

build-support/custom-modules/ns3-configtable.cmake

@@ -148,6 +148,9 @@ macro(write_configtable)
   string(APPEND out "MPI Support                   : ")
   check_on_or_off("${NS3_MPI}" "${MPI_FOUND}")
 
+  string(APPEND out "Multithreaded Simulation      : ")
+  check_on_or_off("${NS3_MTP}" "ON")
+
   string(APPEND out "ns-3 Click Integration        : ")
   check_on_or_off("ON" "${NS3_CLICK}")
 

build-support/macros-and-definitions.cmake

@@ -873,6 +873,12 @@ macro(process_options)
     endif()
   endif()
 
+  set(ENABLE_MTP FALSE)
+  if(${NS3_MTP})
+    add_definitions(-DNS3_MTP)
+    set(ENABLE_MTP TRUE)
+  endif()
+
   if(${NS3_VERBOSE})
     set_property(GLOBAL PROPERTY TARGET_MESSAGES TRUE)
     set(CMAKE_FIND_DEBUG_MODE TRUE)
@@ -1189,6 +1195,10 @@ macro(process_options)
     list(REMOVE_ITEM libs_to_build mpi)
   endif()
 
+  if(NOT ${ENABLE_MTP})
+    list(REMOVE_ITEM libs_to_build mtp)
+  endif()
+
   if(NOT ${ENABLE_VISUALIZER})
     list(REMOVE_ITEM libs_to_build visualizer)
   endif()