build: Add --enable-mtp option

CMakeLists.txt

@@ -75,6 +75,7 @@ option(NS3_MONOLIB
        "Build a single shared ns-3 library and link it against executables" OFF
 )
 option(NS3_MPI "Build with MPI support" OFF)
+option(NS3_MTP "Build with Multithreaded simulation support" OFF)
 option(NS3_NATIVE_OPTIMIZATIONS "Build with -march=native -mtune=native" OFF)
 set(NS3_OUTPUT_DIRECTORY "" CACHE STRING "Directory to store built artifacts")
 option(NS3_PRECOMPILE_HEADERS

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()

ns3

@@ -133,6 +133,7 @@ def parse_args(argv):
         ("logs", "the logs regardless of the compile mode"),
         ("monolib", "a single shared library with all ns-3 modules"),
         ("mpi", "the MPI support for distributed simulation"),
+        ("mtp", "Multithreading support for high speed parallel simulation"),
         ("python-bindings", "python bindings"),
         ("tests", "the ns-3 tests"),
         ("sanitizers", "address, memory leaks and undefined behavior sanitizers"),
@@ -536,6 +537,7 @@ def configure_cmake(cmake, args, current_cmake_cache_folder, current_cmake_gener
                ("LOG", "logs"),
                ("MONOLIB", "monolib"),
                ("MPI", "mpi"),
+               ("MTP", "mtp"),
                ("PYTHON_BINDINGS", "python_bindings"),
                ("SANITIZE", "sanitizers"),
                ("STATIC", "static"),