Hi Hiroe,

I notice that you’re running a new Python from /usr/local. I guess that means you compiled it yourself. It looks like it’s not set up for SSL. That doesn’t happen automatically. You can find instructions on how to do this online, however 14.04 is really, really old. I suspect you are going to encounter other issues building Firedrake there. Can you not upgrade to a more recent LTS release?

Yours,

David

From: firedrake-bounces@imperial.ac.uk <firedrake-bounces@imperial.ac.uk> on behalf of Yamazaki, Hiroe <h.yamazaki@imperial.ac.uk>
Date: Monday, 6 December 2021 at 12:13
To: firedrake <firedrake@imperial.ac.uk>
Subject: [firedrake] firedrake install failed when downloading Eigen

Hi firedrake team,

I am installing firedrake on my Ubuntu 14.04 and failed when downloading Eigen due to ssl.SSLCertVerificationError.
Some of the error messages are as below, and I’ve attached firedrake-install.log.
Any help to fix this would be appreciated.

All the best,
Hiroe

***
Downloading Eigen from 'https://github.com/eigenteam/eigen-git-mirror/archive/3.3.3.tar.gz' to 'eigen-3.3.3.tgz'
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/urllib/request.py", line 1317, in do_open
    encode_chunked=req.has_header('Transfer-encoding'))
  File "/usr/local/lib/python3.7/http/client.py", line 1229, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/local/lib/python3.7/http/client.py", line 1275, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.7/http/client.py", line 1224, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/usr/local/lib/python3.7/http/client.py", line 1016, in _send_output
    self.send(msg)
  File "/usr/local/lib/python3.7/http/client.py", line 956, in send
    self.connect()
  File "/usr/local/lib/python3.7/http/client.py", line 1392, in connect
    server_hostname=server_hostname)
  File "/usr/local/lib/python3.7/ssl.py", line 412, in wrap_socket
    session=session
  File "/usr/local/lib/python3.7/ssl.py", line 850, in _create
    self.do_handshake()
  File "/usr/local/lib/python3.7/ssl.py", line 1108, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1045)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "firedrake-install", line 1649, in <module>
    install("petsc/")
  File "firedrake-install", line 882, in install
    build_and_install_petsc()
  File "firedrake-install", line 995, in build_and_install_petsc
    urllib.request.urlretrieve(url, filename=tarball)
  File "/usr/local/lib/python3.7/urllib/request.py", line 247, in urlretrieve
    with contextlib.closing(urlopen(url, data)) as fp:
  File "/usr/local/lib/python3.7/urllib/request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/local/lib/python3.7/urllib/request.py", line 525, in open
    response = self._open(req, data)
  File "/usr/local/lib/python3.7/urllib/request.py", line 543, in _open
    '_open', req)
  File "/usr/local/lib/python3.7/urllib/request.py", line 503, in _call_chain
    result = func(*args)
  File "/usr/local/lib/python3.7/urllib/request.py", line 1360, in https_open
    context=self._context, check_hostname=self._check_hostname)
  File "/usr/local/lib/python3.7/urllib/request.py", line 1319, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1045)>
***