## -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-

 import os

 import sys

 import Options

 import Logs

 import Utils

 import Task

 # Required NSC version

 NSC_RELEASE_NAME = "nsc-0.5.0"

 def set_options(opt):

     opt.add_option('--with-nsc',

                    help=('Use Network Simulation Cradle, given by the indicated path,'

                          ' to allow the use of real-world network stacks'),

                    default='', dest='with_nsc')

 def configure(conf):

     conf.env['ENABLE_NSC'] = False

     # checks for flex and bison, which is needed to build NSCs globaliser

     # TODO: how to move these checks into the allinone scripts?

     #def check_nsc_buildutils():

     #    import flex

     #    import bison

     #    conf.check_tool('flex bison')

     #    conf.check(lib='fl', mandatory=True)

     # Check for the location of NSC

     if Options.options.with_nsc:

         if os.path.isdir(Options.options.with_nsc):

             conf.check_message("NSC location", '', True, ("%s (given)" % Options.options.with_nsc))

             conf.env['WITH_NSC'] = os.path.abspath(Options.options.with_nsc)

     else:

         nsc_dir = os.path.join('..', "nsc")

         if os.path.isdir(nsc_dir):

             conf.check_message("NSC location", '', True, ("%s (guessed)" % nsc_dir))

             conf.env['WITH_NSC'] = os.path.abspath(nsc_dir)

         del nsc_dir

     if not conf.env['WITH_NSC']:

         conf.check_message("NSC location", '', False)

         conf.report_optional_feature("nsc", "Network Simulation Cradle", False,

                                      "NSC not found (see option --with-nsc)")

 	return

     if sys.platform in ['linux2']:

         arch = os.uname()[4]

     else:

         arch = None

     ok = False

     if arch == 'x86_64' or arch == 'i686' or arch == 'i586' or arch == 'i486' or arch == 'i386':

         conf.env['NSC_ENABLED'] = 'yes'

         conf.env.append_value('CXXDEFINES', 'NETWORK_SIMULATION_CRADLE')

         conf.check(mandatory=True, lib='dl', define_name='HAVE_DL', uselib='DL')

         ok = True

     conf.check_message('NSC supported architecture', arch, ok)

     conf.report_optional_feature("nsc", "Network Simulation Cradle", ok,

                                  "architecture %r not supported" % arch)

     # append the NSC kernel dirs to the module path so that these dirs

     # will end up in the LD_LIBRARY_PATH, thus allowing the NSC NS-3

     # module to find the necessary NSC shared libraries.

     for nsc_module in ['linux-2.6.18', 'linux-2.6.26']:

         conf.env.append_value('NS3_MODULE_PATH',

                               os.path.abspath(os.path.join(conf.env['WITH_NSC'], nsc_module)))

 def build(bld):

     obj = bld.create_ns3_module('internet-stack', ['node'])

     obj.source = [

         'tcp-test.cc',

         'udp-test.cc',

         'ipv4-test.cc',

         'ipv4-l4-protocol.cc',

         'udp-header.cc',

         'tcp-header.cc',

         'ipv4-interface.cc',

         'ipv4-l3-protocol.cc',

         'ipv4-end-point.cc',

         'udp-l4-protocol.cc',

         'tcp-l4-protocol.cc',

         'arp-header.cc',

         'arp-cache.cc',

         'arp-l3-protocol.cc',

         'udp-socket-impl.cc',

         'tcp-socket-impl.cc',

         'ipv4-end-point-demux.cc',

         'udp-socket-factory-impl.cc',

         'tcp-socket-factory-impl.cc',

         'pending-data.cc',

         'sequence-number.cc',

         'rtt-estimator.cc',

         'ipv4-raw-socket-factory-impl.cc',

         'ipv4-raw-socket-impl.cc',

         'icmpv4.cc',

         'icmpv4-l4-protocol.cc',

         'loopback-net-device.cc',

         ]

     headers = bld.new_task_gen('ns3header')

     headers.module = 'internet-stack'

     headers.source = [

         'udp-header.h',

         'tcp-header.h',

         'sequence-number.h',

         'icmpv4.h',

         'ipv4-interface.h',

         'ipv4-l3-protocol.h',

         ]

     if bld.env['NSC_ENABLED']:

         obj.source.append ('nsc-tcp-socket-impl.cc')

         obj.source.append ('nsc-tcp-l4-protocol.cc')

         obj.source.append ('nsc-tcp-socket-factory-impl.cc')

         obj.uselib = 'DL'