From 47d531fb41f0c033743ba3e573df82eb7e606054 Mon Sep 17 00:00:00 2001
From: Tom Henderson <tomh@tomh.org>
Date: Fri, 5 Sep 2014 15:25:10 -0700
Subject: [PATCH] support disabling of NSC by command-line argument

---
 src/internet/wscript | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/internet/wscript b/src/internet/wscript
index da99ff1e3..0da6ce1aa 100644
--- a/src/internet/wscript
+++ b/src/internet/wscript
@@ -14,11 +14,18 @@ def options(opt):
                    help=('Use Network Simulation Cradle, given by the indicated path,'
                          ' to allow the use of real-world network stacks'),
                    default='', dest='with_nsc')
-
+    opt.add_option('--disable-nsc',
+                   help=('Disable Network Simulation Cradle support'),
+                   dest='disable_nsc', default=False, action="store_true")
 
 def configure(conf):
     conf.env['ENABLE_NSC'] = False
 
+    if Options.options.disable_nsc:
+        conf.report_optional_feature("nsc", "Network Simulation Cradle", False,
+                                     "disabled by user request")
+        return
+
     # 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():