Python 3.10.1 build errors on Ubuntu 18.04

[rhr242]

BPO	46281
Nosy	@tiran
Files	python-3.10.1-build-errors.txt: Terminal window error outputs

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2022-01-07.08:53:44.917>
created_at = <Date 2022-01-06.14:45:56.208>
labels = ['build', '3.10']
title = 'Python 3.10.1 build errors on Ubuntu 18.04'
updated_at = <Date 2022-01-07.16:07:46.406>
user = 'https://bugs.python.org/rhr242'

bugs.python.org fields:

activity = <Date 2022-01-07.16:07:46.406>
actor = 'christian.heimes'
assignee = 'none'
closed = True
closed_date = <Date 2022-01-07.08:53:44.917>
closer = 'christian.heimes'
components = []
creation = <Date 2022-01-06.14:45:56.208>
creator = 'rhr242'
dependencies = []
files = ['50545']
hgrepos = []
issue_num = 46281
keywords = []
message_count = 4.0
messages = ['409853', '409954', '409968', '409981']
nosy_count = 2.0
nosy_names = ['christian.heimes', 'rhr242']
pr_nums = []
priority = 'normal'
resolution = 'wont fix'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue46281'
versions = ['Python 3.10']

[rhr242]

_hashlib and _ssl modules failed to compile on my Ubuntu 18.04 system. Attached is a file with the error outputs.

[tiran]

Ubuntu 18.04's OpenSSL is too old and unsupported by 3.10. OpenSSL 1.0.2 is EOL since 2019. You either need to update to a more recent version of Ubuntu or build your own OpenSSL.

[rhr242]

According to synaptic, I have openssl 1.1.1-1ubuntu2.1~18.04-14 installed. On the openssl.org site they mention that this version doesn't eol till 2023. Shouldn't this still work? Or does python require the 3.0 version?

[tiran]

You seem to have OpenSSL 1.0.2 headers installed somewhere on your computer. Python's configure script and build system uses these headers instead of the system headers from libssl-dev.