[Ndn-interest] Error in building ndn-cxx

[Mohammad Alhowaidi]

Dear all,

I have the below problem when I try to build the ndn-cxx, any idea why?

/ndn-cxx$ ./waf
Waf: Entering directory `/home/ubuntu/ndn-cxx/build'
Waf: Leaving directory `/home/ubuntu/ndn-cxx/build'
Traceback (most recent call last):
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Scripting.py",
line 103, in waf_entry_point
    run_commands()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Scripting.py",
line 164, in run_commands
    ctx=run_command(cmd_name)
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Scripting.py",
line 155, in run_command
    ctx.execute()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Scripting.py",
line 366, in execute
    return execute_method(self)
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Build.py",
line 106, in execute
    self.execute_build()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Build.py",
line 113, in execute_build
    self.compile()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Build.py",
line 176, in compile
    self.producer.start()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Runner.py",
line 170, in start
    self.refill_task_list()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Runner.py",
line 98, in refill_task_list
    self.outstanding.extend(self.biter.next())
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Build.py",
line 407, in get_build_iterator
    self.post_group()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/Build.py",
line 391, in post_group
    f()
  File
"/home/ubuntu/ndn-cxx/.waf-1.8.9-849024857bd41c3cf8e87dc01ecf79b0/waflib/TaskGen.py",
line 110, in post
    v()
  File ".waf-tools/sphinx_build.py", line 60, in apply_sphinx
    confData = imp.load_source('sphinx_conf', conf.abspath())
  File "/home/ubuntu/ndn-cxx/docs/conf.py", line 47, in <module>
    addExtensionIfExists('sphinxcontrib.doxylink')
  File "/home/ubuntu/ndn-cxx/docs/conf.py", line 39, in addExtensionIfExists
    __import__(extension)
  File
"/usr/local/lib/python2.7/dist-packages/sphinxcontrib/doxylink/__init__.py",
line 1, in <module>
    from .doxylink import setup
  File
"/usr/local/lib/python2.7/dist-packages/sphinxcontrib/doxylink/doxylink.py",
line 170
    def find_url2(mapping, symbol: str) -> dict:
                                 ^
SyntaxError: invalid syntax

Thanks,
Mohammad
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