build: require boost >= 1.71.0

Refs: #5276
Change-Id: I0f179707020fc6e0908af8aeb1d535ca3cd81410
diff --git a/tools/ndnsec/wscript b/tools/ndnsec/wscript
index 4ff1c5c..1b1f40b 100644
--- a/tools/ndnsec/wscript
+++ b/tools/ndnsec/wscript
@@ -1,18 +1,18 @@
 # -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-
 
-top = '../../'
+top = '../..'
 
 def build(bld):
-    bld.objects(target='tool-ndnsec-objects',
+    bld.objects(target='tools-ndnsec-objects',
                 source=bld.path.ant_glob('*.cpp', excl=['main.cpp']),
                 features='pch',
                 headers='ndnsec-pch.hpp',
                 use='BOOST_TOOLS ndn-cxx')
 
-    bld.program(name='tool-ndnsec',
-                target=top + 'bin/ndnsec',
+    bld.program(name='ndnsec',
+                target=f'{top}/bin/ndnsec',
                 source=['main.cpp'],
-                use='tool-ndnsec-objects')
+                use='tools-ndnsec-objects')
 
     # create convenience symlinks
     for cmd in ('list', 'get-default', 'set-default', 'delete',