KeyError: 'LIBDEPS_ASIO_SYSLIBDEP':
  File "/build/mongodb/src/mongodb-src-r3.2.0/SConstruct", line 2518:
    env.SConscript('src/SConscript', variant_dir='$BUILD_DIR', duplicate=False)
  File "/usr/lib/python2.7/site-packages/SCons/Script/SConscript.py", line 551:
    return _SConscript(self.fs, *files, **subst_kw)
  File "/usr/lib/python2.7/site-packages/SCons/Script/SConscript.py", line 260:
    exec _file_ in call_stack[-1].globals
  File "/build/mongodb/src/mongodb-src-r3.2.0/src/SConscript", line 14:
    ] + module_sconscripts
  File "/usr/lib/python2.7/site-packages/SCons/Script/SConscript.py", line 551:
    return _SConscript(self.fs, *files, **subst_kw)
  File "/usr/lib/python2.7/site-packages/SCons/Script/SConscript.py", line 260:
    exec _file_ in call_stack[-1].globals
  File "/build/mongodb/src/mongodb-src-r3.2.0/src/third_party/SConscript", line 321:
    env['LIBDEPS_ASIO_SYSLIBDEP'],
  File "/usr/lib/python2.7/site-packages/SCons/Environment.py", line 410:
    return self._dict[key]